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/*
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* Copyright 2006 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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package javax.swing;
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import java.awt.Component;
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import java.awt.Container;
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import java.awt.Dimension;
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import java.awt.Insets;
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import java.awt.LayoutManager2;
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import java.util.*;
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import static java.awt.Component.BaselineResizeBehavior;
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import static javax.swing.LayoutStyle.ComponentPlacement;
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import static javax.swing.SwingConstants.HORIZONTAL;
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import static javax.swing.SwingConstants.VERTICAL;
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/**
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* {@code GroupLayout} is a {@code LayoutManager} that hierarchically
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* groups components in order to position them in a {@code Container}.
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* {@code GroupLayout} is intended for use by builders, but may be
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* hand-coded as well.
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* Grouping is done by instances of the {@link Group Group} class. {@code
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* GroupLayout} supports two types of groups. A sequential group
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* positions its child elements sequentially, one after another. A
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* parallel group aligns its child elements in one of four ways.
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* <p>
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* Each group may contain any number of elements, where an element is
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* a {@code Group}, {@code Component}, or gap. A gap can be thought
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* of as an invisible component with a minimum, preferred and maximum
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* size. In addition {@code GroupLayout} supports a preferred gap,
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* whose value comes from {@code LayoutStyle}.
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* <p>
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* Elements are similar to a spring. Each element has a range as
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* specified by a minimum, preferred and maximum. Gaps have either a
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* developer-specified range, or a range determined by {@code
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* LayoutStyle}. The range for {@code Component}s is determined from
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* the {@code Component}'s {@code getMinimumSize}, {@code
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* getPreferredSize} and {@code getMaximumSize} methods. In addition,
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* when adding {@code Component}s you may specify a particular range
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* to use instead of that from the component. The range for a {@code
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* Group} is determined by the type of group. A {@code ParallelGroup}'s
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* range is the maximum of the ranges of its elements. A {@code
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* SequentialGroup}'s range is the sum of the ranges of its elements.
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* <p>
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* {@code GroupLayout} treats each axis independently. That is, there
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* is a group representing the horizontal axis, and a group
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* representing the vertical axis. The horizontal group is
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* responsible for determining the minimum, preferred and maximum size
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* along the horizontal axis as well as setting the x and width of the
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* components contained in it. The vertical group is responsible for
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* determining the minimum, preferred and maximum size along the
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* vertical axis as well as setting the y and height of the
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* components contained in it. Each {@code Component} must exist in both
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* a horizontal and vertical group, otherwise an {@code IllegalStateException}
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* is thrown during layout, or when the minimum, preferred or
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* maximum size is requested.
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* <p>
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* The following diagram shows a sequential group along the horizontal
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* axis. The sequential group contains three components. A parallel group
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* was used along the vertical axis.
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* <p align="center">
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* <img src="doc-files/groupLayout.1.gif">
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* <p>
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* To reinforce that each axis is treated independently the diagram shows
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* the range of each group and element along each axis. The
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* range of each component has been projected onto the axes,
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* and the groups are rendered in blue (horizontal) and red (vertical).
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* For readability there is a gap between each of the elements in the
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* sequential group.
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* <p>
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* The sequential group along the horizontal axis is rendered as a solid
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* blue line. Notice the sequential group is the sum of the children elements
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* it contains.
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* <p>
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* Along the vertical axis the parallel group is the maximum of the height
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* of each of the components. As all three components have the same height,
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* the parallel group has the same height.
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* <p>
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* The following diagram shows the same three components, but with the
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* parallel group along the horizontal axis and the sequential group along
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* the vertical axis.
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* <p>
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* <p align="center">
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* <img src="doc-files/groupLayout.2.gif">
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* <p>
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* As {@code c1} is the largest of the three components, the parallel
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* group is sized to {@code c1}. As {@code c2} and {@code c3} are smaller
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* than {@code c1} they are aligned based on the alignment specified
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* for the component (if specified) or the default alignment of the
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* parallel group. In the diagram {@code c2} and {@code c3} were created
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* with an alignment of {@code LEADING}. If the component orientation were
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* right-to-left then {@code c2} and {@code c3} would be positioned on
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* the opposite side.
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* <p>
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* The following diagram shows a sequential group along both the horizontal
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* and vertical axis.
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* <p align="center">
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* <img src="doc-files/groupLayout.3.gif">
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* <p>
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* {@code GroupLayout} provides the ability to insert gaps between
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* {@code Component}s. The size of the gap is determined by an
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* instance of {@code LayoutStyle}. This may be turned on using the
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* {@code setAutoCreateGaps} method. Similarly, you may use
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* the {@code setAutoCreateContainerGaps} method to insert gaps
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* between components that touch the edge of the parent container and the
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* container.
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* <p>
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* The following builds a panel consisting of two labels in
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* one column, followed by two textfields in the next column:
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* <pre>
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* JComponent panel = ...;
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* GroupLayout layout = new GroupLayout(panel);
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* panel.setLayout(layout);
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*
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* // Turn on automatically adding gaps between components
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* layout.setAutoCreateGaps(true);
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*
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* // Turn on automatically creating gaps between components that touch
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* // the edge of the container and the container.
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* layout.setAutoCreateContainerGaps(true);
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*
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* // Create a sequential group for the horizontal axis.
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*
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* GroupLayout.SequentialGroup hGroup = layout.createSequentialGroup();
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*
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* // The sequential group in turn contains two parallel groups.
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* // One parallel group contains the labels, the other the text fields.
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* // Putting the labels in a parallel group along the horizontal axis
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* // positions them at the same x location.
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* //
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* // Variable indentation is used to reinforce the level of grouping.
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* hGroup.addGroup(layout.createParallelGroup().
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* addComponent(label1).addComponent(label2));
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* hGroup.addGroup(layout.createParallelGroup().
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* addComponent(tf1).addComponent(tf2));
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* layout.setHorizontalGroup(hGroup);
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*
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* // Create a sequential group for the vertical axis.
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* GroupLayout.SequentialGroup vGroup = layout.createSequentialGroup();
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*
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* // The sequential group contains two parallel groups that align
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* // the contents along the baseline. The first parallel group contains
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* // the first label and text field, and the second parallel group contains
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* // the second label and text field. By using a sequential group
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* // the labels and text fields are positioned vertically after one another.
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* vGroup.addGroup(layout.createParallelGroup(Alignment.BASELINE).
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* addComponent(label1).addComponent(tf1));
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* vGroup.addGroup(layout.createParallelGroup(Alignment.BASELINE).
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* addComponent(label2).addComponent(tf2));
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* layout.setVerticalGroup(vGroup);
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* </pre>
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* <p>
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* When run the following is produced.
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* <p align="center">
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* <img src="doc-files/groupLayout.example.png">
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* <p>
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* This layout consists of the following.
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* <ul><li>The horizontal axis consists of a sequential group containing two
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* parallel groups. The first parallel group contains the labels,
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* and the second parallel group contains the text fields.
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* <li>The vertical axis consists of a sequential group
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* containing two parallel groups. The parallel groups are configured
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* to align their components along the baseline. The first parallel
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* group contains the first label and first text field, and
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* the second group consists of the second label and second
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* text field.
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* </ul>
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* There are a couple of things to notice in this code:
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* <ul>
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* <li>You need not explicitly add the components to the container; this
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* is indirectly done by using one of the {@code add} methods of
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* {@code Group}.
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* <li>The various {@code add} methods return
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* the caller. This allows for easy chaining of invocations. For
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* example, {@code group.addComponent(label1).addComponent(label2);} is
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* equivalent to
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* {@code group.addComponent(label1); group.addComponent(label2);}.
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* <li>There are no public constructors for {@code Group}s; instead
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* use the create methods of {@code GroupLayout}.
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* </ul>
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*
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* @author Tomas Pavek
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* @author Jan Stola
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* @author Scott Violet
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* @since 1.6
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*/
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public class GroupLayout implements LayoutManager2 {
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// Used in size calculations
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private static final int MIN_SIZE = 0;
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private static final int PREF_SIZE = 1;
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private static final int MAX_SIZE = 2;
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// Used by prepare, indicates min, pref or max isn't going to be used.
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private static final int SPECIFIC_SIZE = 3;
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private static final int UNSET = Integer.MIN_VALUE;
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/**
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* Indicates the size from the component or gap should be used for a
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* particular range value.
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*
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* @see Group
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*/
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public static final int DEFAULT_SIZE = -1;
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/**
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* Indicates the preferred size from the component or gap should
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* be used for a particular range value.
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*
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* @see Group
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*/
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public static final int PREFERRED_SIZE = -2;
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// Whether or not we automatically try and create the preferred
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// padding between components.
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private boolean autocreatePadding;
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// Whether or not we automatically try and create the preferred
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// padding between components the touch the edge of the container and
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// the container.
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private boolean autocreateContainerPadding;
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/**
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* Group responsible for layout along the horizontal axis. This is NOT
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* the user specified group, use getHorizontalGroup to dig that out.
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*/
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private Group horizontalGroup;
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/**
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* Group responsible for layout along the vertical axis. This is NOT
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* the user specified group, use getVerticalGroup to dig that out.
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*/
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private Group verticalGroup;
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// Maps from Component to ComponentInfo. This is used for tracking
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// information specific to a Component.
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private Map<Component,ComponentInfo> componentInfos;
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// Container we're doing layout for.
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private Container host;
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// Used by areParallelSiblings, cached to avoid excessive garbage.
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private Set<Spring> tmpParallelSet;
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// Indicates Springs have changed in some way since last change.
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private boolean springsChanged;
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// Indicates invalidateLayout has been invoked.
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private boolean isValid;
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// Whether or not any preferred padding (or container padding) springs
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// exist
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private boolean hasPreferredPaddingSprings;
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/**
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* The LayoutStyle instance to use, if null the sharedInstance is used.
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*/
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private LayoutStyle layoutStyle;
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/**
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* If true, components that are not visible are treated as though they
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* aren't there.
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*/
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private boolean honorsVisibility;
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/**
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* Enumeration of the possible ways {@code ParallelGroup} can align
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* its children.
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*
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* @see #createParallelGroup(Alignment)
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* @since 1.6
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*/
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public enum Alignment {
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/**
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* Indicates the elements should be
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* aligned to the origin. For the horizontal axis with a left to
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* right orientation this means aligned to the left edge. For the
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* vertical axis leading means aligned to the top edge.
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*
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* @see #createParallelGroup(Alignment)
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*/
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LEADING,
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/**
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* Indicates the elements should be aligned to the end of the
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* region. For the horizontal axis with a left to right
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* orientation this means aligned to the right edge. For the
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* vertical axis trailing means aligned to the bottom edge.
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*
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* @see #createParallelGroup(Alignment)
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*/
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TRAILING,
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/**
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* Indicates the elements should be centered in
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* the region.
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*
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* @see #createParallelGroup(Alignment)
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*/
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CENTER,
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/**
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* Indicates the elements should be aligned along
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* their baseline.
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*
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* @see #createParallelGroup(Alignment)
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* @see #createBaselineGroup(boolean,boolean)
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*/
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BASELINE
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}
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private static void checkSize(int min, int pref, int max,
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boolean isComponentSpring) {
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checkResizeType(min, isComponentSpring);
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if (!isComponentSpring && pref < 0) {
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throw new IllegalArgumentException("Pref must be >= 0");
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} else if (isComponentSpring) {
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checkResizeType(pref, true);
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}
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checkResizeType(max, isComponentSpring);
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checkLessThan(min, pref);
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checkLessThan(pref, max);
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}
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private static void checkResizeType(int type, boolean isComponentSpring) {
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if (type < 0 && ((isComponentSpring && type != DEFAULT_SIZE &&
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type != PREFERRED_SIZE) ||
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(!isComponentSpring && type != PREFERRED_SIZE))) {
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throw new IllegalArgumentException("Invalid size");
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}
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}
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private static void checkLessThan(int min, int max) {
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if (min >= 0 && max >= 0 && min > max) {
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throw new IllegalArgumentException(
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"Following is not met: min<=pref<=max");
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}
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}
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/**
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* Creates a {@code GroupLayout} for the specified {@code Container}.
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*
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* @param host the {@code Container} the {@code GroupLayout} is
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* the {@code LayoutManager} for
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* @throws IllegalArgumentException if host is {@code null}
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*/
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public GroupLayout(Container host) {
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if (host == null) {
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throw new IllegalArgumentException("Container must be non-null");
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}
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honorsVisibility = true;
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this.host = host;
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setHorizontalGroup(createParallelGroup(Alignment.LEADING, true));
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setVerticalGroup(createParallelGroup(Alignment.LEADING, true));
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componentInfos = new HashMap<Component,ComponentInfo>();
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tmpParallelSet = new HashSet<Spring>();
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}
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/**
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* Sets whether component visiblity is considered when sizing and
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* positioning components. A value of {@code true} indicates that
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* non-visible components should not be treated as part of the
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* layout. A value of {@code false} indicates that components should be
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* positioned and sized regardless of visibility.
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* <p>
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* A value of {@code false} is useful when the visibility of components
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* is dynamically adjusted and you don't want surrounding components and
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* the sizing to change.
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* <p>
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* The specified value is used for components that do not have an
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* explicit visibility specified.
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* <p>
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* The default is {@code true}.
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*
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|
400 |
* @param honorsVisibility whether component visiblity is considered when
|
|
401 |
* sizing and positioning components
|
|
402 |
* @see #setHonorsVisibility(Component,Boolean)
|
|
403 |
*/
|
|
404 |
public void setHonorsVisibility(boolean honorsVisibility) {
|
|
405 |
if (this.honorsVisibility != honorsVisibility) {
|
|
406 |
this.honorsVisibility = honorsVisibility;
|
|
407 |
springsChanged = true;
|
|
408 |
isValid = false;
|
|
409 |
invalidateHost();
|
|
410 |
}
|
|
411 |
}
|
|
412 |
|
|
413 |
/**
|
|
414 |
* Returns whether component visiblity is considered when sizing and
|
|
415 |
* positioning components.
|
|
416 |
*
|
|
417 |
* @return whether component visiblity is considered when sizing and
|
|
418 |
* positioning components
|
|
419 |
*/
|
|
420 |
public boolean getHonorsVisibility() {
|
|
421 |
return honorsVisibility;
|
|
422 |
}
|
|
423 |
|
|
424 |
/**
|
|
425 |
* Sets whether the component's visiblity is considered for
|
|
426 |
* sizing and positioning. A value of {@code Boolean.TRUE}
|
|
427 |
* indicates that if {@code component} is not visible it should
|
|
428 |
* not be treated as part of the layout. A value of {@code false}
|
|
429 |
* indicates that {@code component} is positioned and sized
|
|
430 |
* regardless of it's visibility. A value of {@code null}
|
|
431 |
* indicates the value specified by the single argument method {@code
|
|
432 |
* setHonorsVisibility} should be used.
|
|
433 |
* <p>
|
|
434 |
* If {@code component} is not a child of the {@code Container} this
|
|
435 |
* {@code GroupLayout} is managine, it will be added to the
|
|
436 |
* {@code Container}.
|
|
437 |
*
|
|
438 |
* @param component the component
|
|
439 |
* @param honorsVisibility whether {@code component}'s visiblity should be
|
|
440 |
* considered for sizing and positioning
|
|
441 |
* @throws IllegalArgumentException if {@code component} is {@code null}
|
|
442 |
* @see #setHonorsVisibility(Component,Boolean)
|
|
443 |
*/
|
|
444 |
public void setHonorsVisibility(Component component,
|
|
445 |
Boolean honorsVisibility) {
|
|
446 |
if (component == null) {
|
|
447 |
throw new IllegalArgumentException("Component must be non-null");
|
|
448 |
}
|
|
449 |
getComponentInfo(component).setHonorsVisibility(honorsVisibility);
|
|
450 |
springsChanged = true;
|
|
451 |
isValid = false;
|
|
452 |
invalidateHost();
|
|
453 |
}
|
|
454 |
|
|
455 |
/**
|
|
456 |
* Sets whether a gap between components should automatically be
|
|
457 |
* created. For example, if this is {@code true} and you add two
|
|
458 |
* components to a {@code SequentialGroup} a gap between the
|
|
459 |
* two components is automatically be created. The default is
|
|
460 |
* {@code false}.
|
|
461 |
*
|
|
462 |
* @param autoCreatePadding whether a gap between components is
|
|
463 |
* automatically created
|
|
464 |
*/
|
|
465 |
public void setAutoCreateGaps(boolean autoCreatePadding) {
|
|
466 |
if (this.autocreatePadding != autoCreatePadding) {
|
|
467 |
this.autocreatePadding = autoCreatePadding;
|
|
468 |
invalidateHost();
|
|
469 |
}
|
|
470 |
}
|
|
471 |
|
|
472 |
/**
|
|
473 |
* Returns {@code true} if gaps between components are automatically
|
|
474 |
* created.
|
|
475 |
*
|
|
476 |
* @return {@code true} if gaps between components are automatically
|
|
477 |
* created
|
|
478 |
*/
|
|
479 |
public boolean getAutoCreateGaps() {
|
|
480 |
return autocreatePadding;
|
|
481 |
}
|
|
482 |
|
|
483 |
/**
|
|
484 |
* Sets whether a gap between the container and components that
|
|
485 |
* touch the border of the container should automatically be
|
|
486 |
* created. The default is {@code false}.
|
|
487 |
*
|
|
488 |
* @param autoCreateContainerPadding whether a gap between the container and
|
|
489 |
* components that touch the border of the container should
|
|
490 |
* automatically be created
|
|
491 |
*/
|
|
492 |
public void setAutoCreateContainerGaps(boolean autoCreateContainerPadding){
|
|
493 |
if (this.autocreateContainerPadding != autoCreateContainerPadding) {
|
|
494 |
this.autocreateContainerPadding = autoCreateContainerPadding;
|
|
495 |
horizontalGroup = createTopLevelGroup(getHorizontalGroup());
|
|
496 |
verticalGroup = createTopLevelGroup(getVerticalGroup());
|
|
497 |
invalidateHost();
|
|
498 |
}
|
|
499 |
}
|
|
500 |
|
|
501 |
/**
|
|
502 |
* Returns {@code true} if gaps between the container and components that
|
|
503 |
* border the container are automatically created.
|
|
504 |
*
|
|
505 |
* @return {@code true} if gaps between the container and components that
|
|
506 |
* border the container are automatically created
|
|
507 |
*/
|
|
508 |
public boolean getAutoCreateContainerGaps() {
|
|
509 |
return autocreateContainerPadding;
|
|
510 |
}
|
|
511 |
|
|
512 |
/**
|
|
513 |
* Sets the {@code Group} that positions and sizes
|
|
514 |
* components along the horizontal axis.
|
|
515 |
*
|
|
516 |
* @param group the {@code Group} that positions and sizes
|
|
517 |
* components along the horizontal axis
|
|
518 |
* @throws IllegalArgumentException if group is {@code null}
|
|
519 |
*/
|
|
520 |
public void setHorizontalGroup(Group group) {
|
|
521 |
if (group == null) {
|
|
522 |
throw new IllegalArgumentException("Group must be non-null");
|
|
523 |
}
|
|
524 |
horizontalGroup = createTopLevelGroup(group);
|
|
525 |
invalidateHost();
|
|
526 |
}
|
|
527 |
|
|
528 |
/**
|
|
529 |
* Returns the {@code Group} that positions and sizes components
|
|
530 |
* along the horizontal axis.
|
|
531 |
*
|
|
532 |
* @return the {@code Group} responsible for positioning and
|
|
533 |
* sizing component along the horizontal axis
|
|
534 |
*/
|
|
535 |
private Group getHorizontalGroup() {
|
|
536 |
int index = 0;
|
|
537 |
if (horizontalGroup.springs.size() > 1) {
|
|
538 |
index = 1;
|
|
539 |
}
|
|
540 |
return (Group)horizontalGroup.springs.get(index);
|
|
541 |
}
|
|
542 |
|
|
543 |
/**
|
|
544 |
* Sets the {@code Group} that positions and sizes
|
|
545 |
* components along the vertical axis.
|
|
546 |
*
|
|
547 |
* @param group the {@code Group} that positions and sizes
|
|
548 |
* components along the vertical axis
|
|
549 |
* @throws IllegalArgumentException if group is {@code null}
|
|
550 |
*/
|
|
551 |
public void setVerticalGroup(Group group) {
|
|
552 |
if (group == null) {
|
|
553 |
throw new IllegalArgumentException("Group must be non-null");
|
|
554 |
}
|
|
555 |
verticalGroup = createTopLevelGroup(group);
|
|
556 |
invalidateHost();
|
|
557 |
}
|
|
558 |
|
|
559 |
/**
|
|
560 |
* Returns the {@code Group} that positions and sizes components
|
|
561 |
* along the vertical axis.
|
|
562 |
*
|
|
563 |
* @return the {@code Group} responsible for positioning and
|
|
564 |
* sizing component along the vertical axis
|
|
565 |
*/
|
|
566 |
private Group getVerticalGroup() {
|
|
567 |
int index = 0;
|
|
568 |
if (verticalGroup.springs.size() > 1) {
|
|
569 |
index = 1;
|
|
570 |
}
|
|
571 |
return (Group)verticalGroup.springs.get(index);
|
|
572 |
}
|
|
573 |
|
|
574 |
/**
|
|
575 |
* Wraps the user specified group in a sequential group. If
|
|
576 |
* container gaps should be generated the necessary springs are
|
|
577 |
* added.
|
|
578 |
*/
|
|
579 |
private Group createTopLevelGroup(Group specifiedGroup) {
|
|
580 |
SequentialGroup group = createSequentialGroup();
|
|
581 |
if (getAutoCreateContainerGaps()) {
|
|
582 |
group.addSpring(new ContainerAutoPreferredGapSpring());
|
|
583 |
group.addGroup(specifiedGroup);
|
|
584 |
group.addSpring(new ContainerAutoPreferredGapSpring());
|
|
585 |
} else {
|
|
586 |
group.addGroup(specifiedGroup);
|
|
587 |
}
|
|
588 |
return group;
|
|
589 |
}
|
|
590 |
|
|
591 |
/**
|
|
592 |
* Creates and returns a {@code SequentialGroup}.
|
|
593 |
*
|
|
594 |
* @return a new {@code SequentialGroup}
|
|
595 |
*/
|
|
596 |
public SequentialGroup createSequentialGroup() {
|
|
597 |
return new SequentialGroup();
|
|
598 |
}
|
|
599 |
|
|
600 |
/**
|
|
601 |
* Creates and returns a {@code ParallelGroup} with an alignment of
|
|
602 |
* {@code Alignment.LEADING}. This is a cover method for the more
|
|
603 |
* general {@code createParallelGroup(Alignment)} method.
|
|
604 |
*
|
|
605 |
* @return a new {@code ParallelGroup}
|
|
606 |
* @see #createParallelGroup(Alignment)
|
|
607 |
*/
|
|
608 |
public ParallelGroup createParallelGroup() {
|
|
609 |
return createParallelGroup(Alignment.LEADING);
|
|
610 |
}
|
|
611 |
|
|
612 |
/**
|
|
613 |
* Creates and returns a {@code ParallelGroup} with the specified
|
|
614 |
* alignment. This is a cover method for the more general {@code
|
|
615 |
* createParallelGroup(Alignment,boolean)} method with {@code true}
|
|
616 |
* supplied for the second argument.
|
|
617 |
*
|
|
618 |
* @param alignment the alignment for the elements of the group
|
|
619 |
* @throws IllegalArgumentException if {@code alignment} is {@code null}
|
|
620 |
* @return a new {@code ParallelGroup}
|
|
621 |
* @see #createBaselineGroup
|
|
622 |
* @see ParallelGroup
|
|
623 |
*/
|
|
624 |
public ParallelGroup createParallelGroup(Alignment alignment) {
|
|
625 |
return createParallelGroup(alignment, true);
|
|
626 |
}
|
|
627 |
|
|
628 |
/**
|
|
629 |
* Creates and returns a {@code ParallelGroup} with the specified
|
|
630 |
* alignment and resize behavior. The {@code
|
|
631 |
* alignment} argument specifies how children elements are
|
|
632 |
* positioned that do not fill the group. For example, if a {@code
|
|
633 |
* ParallelGroup} with an alignment of {@code TRAILING} is given
|
|
634 |
* 100 and a child only needs 50, the child is
|
|
635 |
* positioned at the position 50 (with a component orientation of
|
|
636 |
* left-to-right).
|
|
637 |
* <p>
|
|
638 |
* Baseline alignment is only useful when used along the vertical
|
|
639 |
* axis. A {@code ParallelGroup} created with a baseline alignment
|
|
640 |
* along the horizontal axis is treated as {@code LEADING}.
|
|
641 |
* <p>
|
|
642 |
* Refer to {@link GroupLayout.ParallelGroup ParallelGroup} for details on
|
|
643 |
* the behavior of baseline groups.
|
|
644 |
*
|
|
645 |
* @param alignment the alignment for the elements of the group
|
|
646 |
* @param resizable {@code true} if the group is resizable; if the group
|
|
647 |
* is not resizable the preferred size is used for the
|
|
648 |
* minimum and maximum size of the group
|
|
649 |
* @throws IllegalArgumentException if {@code alignment} is {@code null}
|
|
650 |
* @return a new {@code ParallelGroup}
|
|
651 |
* @see #createBaselineGroup
|
|
652 |
* @see GroupLayout.ParallelGroup
|
|
653 |
*/
|
|
654 |
public ParallelGroup createParallelGroup(Alignment alignment,
|
|
655 |
boolean resizable){
|
|
656 |
if (alignment == Alignment.BASELINE) {
|
|
657 |
return new BaselineGroup(resizable);
|
|
658 |
}
|
|
659 |
return new ParallelGroup(alignment, resizable);
|
|
660 |
}
|
|
661 |
|
|
662 |
/**
|
|
663 |
* Creates and returns a {@code ParallelGroup} that aligns it's
|
|
664 |
* elements along the baseline.
|
|
665 |
*
|
|
666 |
* @param resizable whether the group is resizable
|
|
667 |
* @param anchorBaselineToTop whether the baseline is anchored to
|
|
668 |
* the top or bottom of the group
|
|
669 |
* @see #createBaselineGroup
|
|
670 |
* @see ParallelGroup
|
|
671 |
*/
|
|
672 |
public ParallelGroup createBaselineGroup(boolean resizable,
|
|
673 |
boolean anchorBaselineToTop) {
|
|
674 |
return new BaselineGroup(resizable, anchorBaselineToTop);
|
|
675 |
}
|
|
676 |
|
|
677 |
/**
|
|
678 |
* Forces the specified components to have the same size
|
|
679 |
* regardless of their preferred, minimum or maximum sizes. Components that
|
|
680 |
* are linked are given the maximum of the preferred size of each of
|
|
681 |
* the linked components. For example, if you link two components with
|
|
682 |
* a preferred width of 10 and 20, both components are given a width of 20.
|
|
683 |
* <p>
|
|
684 |
* This can be used multiple times to force any number of
|
|
685 |
* components to share the same size.
|
|
686 |
* <p>
|
|
687 |
* Linked Components are not be resizable.
|
|
688 |
*
|
|
689 |
* @param components the {@code Component}s that are to have the same size
|
|
690 |
* @throws IllegalArgumentException if {@code components} is
|
|
691 |
* {@code null}, or contains {@code null}
|
|
692 |
* @see #linkSize(int,Component[])
|
|
693 |
*/
|
|
694 |
public void linkSize(Component... components) {
|
|
695 |
linkSize(SwingConstants.HORIZONTAL, components);
|
|
696 |
linkSize(SwingConstants.VERTICAL, components);
|
|
697 |
}
|
|
698 |
|
|
699 |
/**
|
|
700 |
* Forces the specified components to have the same size along the
|
|
701 |
* specified axis regardless of their preferred, minimum or
|
|
702 |
* maximum sizes. Components that are linked are given the maximum
|
|
703 |
* of the preferred size of each of the linked components. For
|
|
704 |
* example, if you link two components along the horizontal axis
|
|
705 |
* and the preferred width is 10 and 20, both components are given
|
|
706 |
* a width of 20.
|
|
707 |
* <p>
|
|
708 |
* This can be used multiple times to force any number of
|
|
709 |
* components to share the same size.
|
|
710 |
* <p>
|
|
711 |
* Linked {@code Component}s are not be resizable.
|
|
712 |
*
|
|
713 |
* @param components the {@code Component}s that are to have the same size
|
|
714 |
* @param axis the axis to link the size along; one of
|
|
715 |
* {@code SwingConstants.HORIZONTAL} or
|
|
716 |
* {@code SwingConstans.VERTICAL}
|
|
717 |
* @throws IllegalArgumentException if {@code components} is
|
|
718 |
* {@code null}, or contains {@code null}; or {@code axis}
|
|
719 |
* is not {@code SwingConstants.HORIZONTAL} or
|
|
720 |
* {@code SwingConstants.VERTICAL}
|
|
721 |
*/
|
|
722 |
public void linkSize(int axis, Component... components) {
|
|
723 |
if (components == null) {
|
|
724 |
throw new IllegalArgumentException("Components must be non-null");
|
|
725 |
}
|
|
726 |
for (int counter = components.length - 1; counter >= 0; counter--) {
|
|
727 |
Component c = components[counter];
|
|
728 |
if (components[counter] == null) {
|
|
729 |
throw new IllegalArgumentException(
|
|
730 |
"Components must be non-null");
|
|
731 |
}
|
|
732 |
// Force the component to be added
|
|
733 |
getComponentInfo(c);
|
|
734 |
}
|
|
735 |
int glAxis;
|
|
736 |
if (axis == SwingConstants.HORIZONTAL) {
|
|
737 |
glAxis = HORIZONTAL;
|
|
738 |
} else if (axis == SwingConstants.VERTICAL) {
|
|
739 |
glAxis = VERTICAL;
|
|
740 |
} else {
|
|
741 |
throw new IllegalArgumentException("Axis must be one of " +
|
|
742 |
"SwingConstants.HORIZONTAL or SwingConstants.VERTICAL");
|
|
743 |
}
|
|
744 |
LinkInfo master = getComponentInfo(
|
|
745 |
components[components.length - 1]).getLinkInfo(glAxis);
|
|
746 |
for (int counter = components.length - 2; counter >= 0; counter--) {
|
|
747 |
master.add(getComponentInfo(components[counter]));
|
|
748 |
}
|
|
749 |
invalidateHost();
|
|
750 |
}
|
|
751 |
|
|
752 |
/**
|
|
753 |
* Replaces an existing component with a new one.
|
|
754 |
*
|
|
755 |
* @param existingComponent the component that should be removed
|
|
756 |
* and replaced with {@code newComponent}
|
|
757 |
* @param newComponent the component to put in
|
|
758 |
* {@code existingComponent}'s place
|
|
759 |
* @throws IllegalArgumentException if either of the components are
|
|
760 |
* {@code null} or {@code existingComponent} is not being managed
|
|
761 |
* by this layout manager
|
|
762 |
*/
|
|
763 |
public void replace(Component existingComponent, Component newComponent) {
|
|
764 |
if (existingComponent == null || newComponent == null) {
|
|
765 |
throw new IllegalArgumentException("Components must be non-null");
|
|
766 |
}
|
|
767 |
// Make sure all the components have been registered, otherwise we may
|
|
768 |
// not update the correct Springs.
|
|
769 |
if (springsChanged) {
|
|
770 |
registerComponents(horizontalGroup, HORIZONTAL);
|
|
771 |
registerComponents(verticalGroup, VERTICAL);
|
|
772 |
}
|
|
773 |
ComponentInfo info = componentInfos.remove(existingComponent);
|
|
774 |
if (info == null) {
|
|
775 |
throw new IllegalArgumentException("Component must already exist");
|
|
776 |
}
|
|
777 |
host.remove(existingComponent);
|
|
778 |
if (newComponent.getParent() != host) {
|
|
779 |
host.add(newComponent);
|
|
780 |
}
|
|
781 |
info.setComponent(newComponent);
|
|
782 |
componentInfos.put(newComponent, info);
|
|
783 |
invalidateHost();
|
|
784 |
}
|
|
785 |
|
|
786 |
/**
|
|
787 |
* Sets the {@code LayoutStyle} used to calculate the preferred
|
|
788 |
* gaps between components. A value of {@code null} indicates the
|
|
789 |
* shared instance of {@code LayoutStyle} should be used.
|
|
790 |
*
|
|
791 |
* @param layoutStyle the {@code LayoutStyle} to use
|
|
792 |
* @see LayoutStyle
|
|
793 |
*/
|
|
794 |
public void setLayoutStyle(LayoutStyle layoutStyle) {
|
|
795 |
this.layoutStyle = layoutStyle;
|
|
796 |
invalidateHost();
|
|
797 |
}
|
|
798 |
|
|
799 |
/**
|
|
800 |
* Returns the {@code LayoutStyle} used for calculating the preferred
|
|
801 |
* gap between components. This returns the value specified to
|
|
802 |
* {@code setLayoutStyle}, which may be {@code null}.
|
|
803 |
*
|
|
804 |
* @return the {@code LayoutStyle} used for calculating the preferred
|
|
805 |
* gap between components
|
|
806 |
*/
|
|
807 |
public LayoutStyle getLayoutStyle() {
|
|
808 |
return layoutStyle;
|
|
809 |
}
|
|
810 |
|
|
811 |
private LayoutStyle getLayoutStyle0() {
|
|
812 |
LayoutStyle layoutStyle = getLayoutStyle();
|
|
813 |
if (layoutStyle == null) {
|
|
814 |
layoutStyle = LayoutStyle.getInstance();
|
|
815 |
}
|
|
816 |
return layoutStyle;
|
|
817 |
}
|
|
818 |
|
|
819 |
private void invalidateHost() {
|
|
820 |
if (host instanceof JComponent) {
|
|
821 |
((JComponent)host).revalidate();
|
|
822 |
} else {
|
|
823 |
host.invalidate();
|
|
824 |
}
|
|
825 |
host.repaint();
|
|
826 |
}
|
|
827 |
|
|
828 |
//
|
|
829 |
// LayoutManager
|
|
830 |
//
|
|
831 |
/**
|
|
832 |
* Notification that a {@code Component} has been added to
|
|
833 |
* the parent container. You should not invoke this method
|
|
834 |
* directly, instead you should use one of the {@code Group}
|
|
835 |
* methods to add a {@code Component}.
|
|
836 |
*
|
|
837 |
* @param name the string to be associated with the component
|
|
838 |
* @param component the {@code Component} to be added
|
|
839 |
*/
|
|
840 |
public void addLayoutComponent(String name, Component component) {
|
|
841 |
}
|
|
842 |
|
|
843 |
/**
|
|
844 |
* Notification that a {@code Component} has been removed from
|
|
845 |
* the parent container. You should not invoke this method
|
|
846 |
* directly, instead invoke {@code remove} on the parent
|
|
847 |
* {@code Container}.
|
|
848 |
*
|
|
849 |
* @param component the component to be removed
|
|
850 |
* @see java.awt.Component#remove
|
|
851 |
*/
|
|
852 |
public void removeLayoutComponent(Component component) {
|
|
853 |
ComponentInfo info = componentInfos.remove(component);
|
|
854 |
if (info != null) {
|
|
855 |
info.dispose();
|
|
856 |
springsChanged = true;
|
|
857 |
isValid = false;
|
|
858 |
}
|
|
859 |
}
|
|
860 |
|
|
861 |
/**
|
|
862 |
* Returns the preferred size for the specified container.
|
|
863 |
*
|
|
864 |
* @param parent the container to return the preferred size for
|
|
865 |
* @return the preferred size for {@code parent}
|
|
866 |
* @throws IllegalArgumentException if {@code parent} is not
|
|
867 |
* the same {@code Container} this was created with
|
|
868 |
* @throws IllegalStateException if any of the components added to
|
|
869 |
* this layout are not in both a horizontal and vertical group
|
|
870 |
* @see java.awt.Container#getPreferredSize
|
|
871 |
*/
|
|
872 |
public Dimension preferredLayoutSize(Container parent) {
|
|
873 |
checkParent(parent);
|
|
874 |
prepare(PREF_SIZE);
|
|
875 |
return adjustSize(horizontalGroup.getPreferredSize(HORIZONTAL),
|
|
876 |
verticalGroup.getPreferredSize(VERTICAL));
|
|
877 |
}
|
|
878 |
|
|
879 |
/**
|
|
880 |
* Returns the minimum size for the specified container.
|
|
881 |
*
|
|
882 |
* @param parent the container to return the size for
|
|
883 |
* @return the minimum size for {@code parent}
|
|
884 |
* @throws IllegalArgumentException if {@code parent} is not
|
|
885 |
* the same {@code Container} that this was created with
|
|
886 |
* @throws IllegalStateException if any of the components added to
|
|
887 |
* this layout are not in both a horizontal and vertical group
|
|
888 |
* @see java.awt.Container#getMinimumSize
|
|
889 |
*/
|
|
890 |
public Dimension minimumLayoutSize(Container parent) {
|
|
891 |
checkParent(parent);
|
|
892 |
prepare(MIN_SIZE);
|
|
893 |
return adjustSize(horizontalGroup.getMinimumSize(HORIZONTAL),
|
|
894 |
verticalGroup.getMinimumSize(VERTICAL));
|
|
895 |
}
|
|
896 |
|
|
897 |
/**
|
|
898 |
* Lays out the specified container.
|
|
899 |
*
|
|
900 |
* @param parent the container to be laid out
|
|
901 |
* @throws IllegalStateException if any of the components added to
|
|
902 |
* this layout are not in both a horizontal and vertical group
|
|
903 |
*/
|
|
904 |
public void layoutContainer(Container parent) {
|
|
905 |
// Step 1: Prepare for layout.
|
|
906 |
prepare(SPECIFIC_SIZE);
|
|
907 |
Insets insets = parent.getInsets();
|
|
908 |
int width = parent.getWidth() - insets.left - insets.right;
|
|
909 |
int height = parent.getHeight() - insets.top - insets.bottom;
|
|
910 |
boolean ltr = isLeftToRight();
|
|
911 |
if (getAutoCreateGaps() || getAutoCreateContainerGaps() ||
|
|
912 |
hasPreferredPaddingSprings) {
|
|
913 |
// Step 2: Calculate autopadding springs
|
|
914 |
calculateAutopadding(horizontalGroup, HORIZONTAL, SPECIFIC_SIZE, 0,
|
|
915 |
width);
|
|
916 |
calculateAutopadding(verticalGroup, VERTICAL, SPECIFIC_SIZE, 0,
|
|
917 |
height);
|
|
918 |
}
|
|
919 |
// Step 3: set the size of the groups.
|
|
920 |
horizontalGroup.setSize(HORIZONTAL, 0, width);
|
|
921 |
verticalGroup.setSize(VERTICAL, 0, height);
|
|
922 |
// Step 4: apply the size to the components.
|
|
923 |
for (ComponentInfo info : componentInfos.values()) {
|
|
924 |
info.setBounds(insets, width, ltr);
|
|
925 |
}
|
|
926 |
}
|
|
927 |
|
|
928 |
//
|
|
929 |
// LayoutManager2
|
|
930 |
//
|
|
931 |
/**
|
|
932 |
* Notification that a {@code Component} has been added to
|
|
933 |
* the parent container. You should not invoke this method
|
|
934 |
* directly, instead you should use one of the {@code Group}
|
|
935 |
* methods to add a {@code Component}.
|
|
936 |
*
|
|
937 |
* @param component the component added
|
|
938 |
* @param constraints description of where to place the component
|
|
939 |
*/
|
|
940 |
public void addLayoutComponent(Component component, Object constraints) {
|
|
941 |
}
|
|
942 |
|
|
943 |
/**
|
|
944 |
* Returns the maximum size for the specified container.
|
|
945 |
*
|
|
946 |
* @param parent the container to return the size for
|
|
947 |
* @return the maximum size for {@code parent}
|
|
948 |
* @throws IllegalArgumentException if {@code parent} is not
|
|
949 |
* the same {@code Container} that this was created with
|
|
950 |
* @throws IllegalStateException if any of the components added to
|
|
951 |
* this layout are not in both a horizontal and vertical group
|
|
952 |
* @see java.awt.Container#getMaximumSize
|
|
953 |
*/
|
|
954 |
public Dimension maximumLayoutSize(Container parent) {
|
|
955 |
checkParent(parent);
|
|
956 |
prepare(MAX_SIZE);
|
|
957 |
return adjustSize(horizontalGroup.getMaximumSize(HORIZONTAL),
|
|
958 |
verticalGroup.getMaximumSize(VERTICAL));
|
|
959 |
}
|
|
960 |
|
|
961 |
/**
|
|
962 |
* Returns the alignment along the x axis. This specifies how
|
|
963 |
* the component would like to be aligned relative to other
|
|
964 |
* components. The value should be a number between 0 and 1
|
|
965 |
* where 0 represents alignment along the origin, 1 is aligned
|
|
966 |
* the furthest away from the origin, 0.5 is centered, etc.
|
|
967 |
*
|
|
968 |
* @param parent the {@code Container} hosting this {@code LayoutManager}
|
|
969 |
* @throws IllegalArgumentException if {@code parent} is not
|
|
970 |
* the same {@code Container} that this was created with
|
|
971 |
* @return the alignment; this implementation returns {@code .5}
|
|
972 |
*/
|
|
973 |
public float getLayoutAlignmentX(Container parent) {
|
|
974 |
checkParent(parent);
|
|
975 |
return .5f;
|
|
976 |
}
|
|
977 |
|
|
978 |
/**
|
|
979 |
* Returns the alignment along the y axis. This specifies how
|
|
980 |
* the component would like to be aligned relative to other
|
|
981 |
* components. The value should be a number between 0 and 1
|
|
982 |
* where 0 represents alignment along the origin, 1 is aligned
|
|
983 |
* the furthest away from the origin, 0.5 is centered, etc.
|
|
984 |
*
|
|
985 |
* @param parent the {@code Container} hosting this {@code LayoutManager}
|
|
986 |
* @throws IllegalArgumentException if {@code parent} is not
|
|
987 |
* the same {@code Container} that this was created with
|
|
988 |
* @return alignment; this implementation returns {@code .5}
|
|
989 |
*/
|
|
990 |
public float getLayoutAlignmentY(Container parent) {
|
|
991 |
checkParent(parent);
|
|
992 |
return .5f;
|
|
993 |
}
|
|
994 |
|
|
995 |
/**
|
|
996 |
* Invalidates the layout, indicating that if the layout manager
|
|
997 |
* has cached information it should be discarded.
|
|
998 |
*
|
|
999 |
* @param parent the {@code Container} hosting this LayoutManager
|
|
1000 |
* @throws IllegalArgumentException if {@code parent} is not
|
|
1001 |
* the same {@code Container} that this was created with
|
|
1002 |
*/
|
|
1003 |
public void invalidateLayout(Container parent) {
|
|
1004 |
checkParent(parent);
|
|
1005 |
// invalidateLayout is called from Container.invalidate, which
|
|
1006 |
// does NOT grab the treelock. All other methods do. To make sure
|
|
1007 |
// there aren't any possible threading problems we grab the tree lock
|
|
1008 |
// here.
|
|
1009 |
synchronized(parent.getTreeLock()) {
|
|
1010 |
isValid = false;
|
|
1011 |
}
|
|
1012 |
}
|
|
1013 |
|
|
1014 |
private void prepare(int sizeType) {
|
|
1015 |
boolean visChanged = false;
|
|
1016 |
// Step 1: If not-valid, clear springs and update visibility.
|
|
1017 |
if (!isValid) {
|
|
1018 |
isValid = true;
|
|
1019 |
horizontalGroup.setSize(HORIZONTAL, UNSET, UNSET);
|
|
1020 |
verticalGroup.setSize(VERTICAL, UNSET, UNSET);
|
|
1021 |
for (ComponentInfo ci : componentInfos.values()) {
|
|
1022 |
if (ci.updateVisibility()) {
|
|
1023 |
visChanged = true;
|
|
1024 |
}
|
|
1025 |
ci.clearCachedSize();
|
|
1026 |
}
|
|
1027 |
}
|
|
1028 |
// Step 2: Make sure components are bound to ComponentInfos
|
|
1029 |
if (springsChanged) {
|
|
1030 |
registerComponents(horizontalGroup, HORIZONTAL);
|
|
1031 |
registerComponents(verticalGroup, VERTICAL);
|
|
1032 |
}
|
|
1033 |
// Step 3: Adjust the autopadding. This removes existing
|
|
1034 |
// autopadding, then recalculates where it should go.
|
|
1035 |
if (springsChanged || visChanged) {
|
|
1036 |
checkComponents();
|
|
1037 |
horizontalGroup.removeAutopadding();
|
|
1038 |
verticalGroup.removeAutopadding();
|
|
1039 |
if (getAutoCreateGaps()) {
|
|
1040 |
insertAutopadding(true);
|
|
1041 |
} else if (hasPreferredPaddingSprings ||
|
|
1042 |
getAutoCreateContainerGaps()) {
|
|
1043 |
insertAutopadding(false);
|
|
1044 |
}
|
|
1045 |
springsChanged = false;
|
|
1046 |
}
|
|
1047 |
// Step 4: (for min/pref/max size calculations only) calculate the
|
|
1048 |
// autopadding. This invokes for unsetting the calculated values, then
|
|
1049 |
// recalculating them.
|
|
1050 |
// If sizeType == SPECIFIC_SIZE, it indicates we're doing layout, this
|
|
1051 |
// step will be done later on.
|
|
1052 |
if (sizeType != SPECIFIC_SIZE && (getAutoCreateGaps() ||
|
|
1053 |
getAutoCreateContainerGaps() || hasPreferredPaddingSprings)) {
|
|
1054 |
calculateAutopadding(horizontalGroup, HORIZONTAL, sizeType, 0, 0);
|
|
1055 |
calculateAutopadding(verticalGroup, VERTICAL, sizeType, 0, 0);
|
|
1056 |
}
|
|
1057 |
}
|
|
1058 |
|
|
1059 |
private void calculateAutopadding(Group group, int axis, int sizeType,
|
|
1060 |
int origin, int size) {
|
|
1061 |
group.unsetAutopadding();
|
|
1062 |
switch(sizeType) {
|
|
1063 |
case MIN_SIZE:
|
|
1064 |
size = group.getMinimumSize(axis);
|
|
1065 |
break;
|
|
1066 |
case PREF_SIZE:
|
|
1067 |
size = group.getPreferredSize(axis);
|
|
1068 |
break;
|
|
1069 |
case MAX_SIZE:
|
|
1070 |
size = group.getMaximumSize(axis);
|
|
1071 |
break;
|
|
1072 |
default:
|
|
1073 |
break;
|
|
1074 |
}
|
|
1075 |
group.setSize(axis, origin, size);
|
|
1076 |
group.calculateAutopadding(axis);
|
|
1077 |
}
|
|
1078 |
|
|
1079 |
private void checkComponents() {
|
|
1080 |
for (ComponentInfo info : componentInfos.values()) {
|
|
1081 |
if (info.horizontalSpring == null) {
|
|
1082 |
throw new IllegalStateException(info.component +
|
|
1083 |
" is not attached to a horizontal group");
|
|
1084 |
}
|
|
1085 |
if (info.verticalSpring == null) {
|
|
1086 |
throw new IllegalStateException(info.component +
|
|
1087 |
" is not attached to a vertical group");
|
|
1088 |
}
|
|
1089 |
}
|
|
1090 |
}
|
|
1091 |
|
|
1092 |
private void registerComponents(Group group, int axis) {
|
|
1093 |
List<Spring> springs = group.springs;
|
|
1094 |
for (int counter = springs.size() - 1; counter >= 0; counter--) {
|
|
1095 |
Spring spring = springs.get(counter);
|
|
1096 |
if (spring instanceof ComponentSpring) {
|
|
1097 |
((ComponentSpring)spring).installIfNecessary(axis);
|
|
1098 |
} else if (spring instanceof Group) {
|
|
1099 |
registerComponents((Group)spring, axis);
|
|
1100 |
}
|
|
1101 |
}
|
|
1102 |
}
|
|
1103 |
|
|
1104 |
private Dimension adjustSize(int width, int height) {
|
|
1105 |
Insets insets = host.getInsets();
|
|
1106 |
return new Dimension(width + insets.left + insets.right,
|
|
1107 |
height + insets.top + insets.bottom);
|
|
1108 |
}
|
|
1109 |
|
|
1110 |
private void checkParent(Container parent) {
|
|
1111 |
if (parent != host) {
|
|
1112 |
throw new IllegalArgumentException(
|
|
1113 |
"GroupLayout can only be used with one Container at a time");
|
|
1114 |
}
|
|
1115 |
}
|
|
1116 |
|
|
1117 |
/**
|
|
1118 |
* Returns the {@code ComponentInfo} for the specified Component,
|
|
1119 |
* creating one if necessary.
|
|
1120 |
*/
|
|
1121 |
private ComponentInfo getComponentInfo(Component component) {
|
|
1122 |
ComponentInfo info = (ComponentInfo)componentInfos.get(component);
|
|
1123 |
if (info == null) {
|
|
1124 |
info = new ComponentInfo(component);
|
|
1125 |
componentInfos.put(component, info);
|
|
1126 |
if (component.getParent() != host) {
|
|
1127 |
host.add(component);
|
|
1128 |
}
|
|
1129 |
}
|
|
1130 |
return info;
|
|
1131 |
}
|
|
1132 |
|
|
1133 |
/**
|
|
1134 |
* Adjusts the autopadding springs for the horizontal and vertical
|
|
1135 |
* groups. If {@code insert} is {@code true} this will insert auto padding
|
|
1136 |
* springs, otherwise this will only adjust the springs that
|
|
1137 |
* comprise auto preferred padding springs.
|
|
1138 |
*/
|
|
1139 |
private void insertAutopadding(boolean insert) {
|
|
1140 |
horizontalGroup.insertAutopadding(HORIZONTAL,
|
|
1141 |
new ArrayList<AutoPreferredGapSpring>(1),
|
|
1142 |
new ArrayList<AutoPreferredGapSpring>(1),
|
|
1143 |
new ArrayList<ComponentSpring>(1),
|
|
1144 |
new ArrayList<ComponentSpring>(1), insert);
|
|
1145 |
verticalGroup.insertAutopadding(VERTICAL,
|
|
1146 |
new ArrayList<AutoPreferredGapSpring>(1),
|
|
1147 |
new ArrayList<AutoPreferredGapSpring>(1),
|
|
1148 |
new ArrayList<ComponentSpring>(1),
|
|
1149 |
new ArrayList<ComponentSpring>(1), insert);
|
|
1150 |
}
|
|
1151 |
|
|
1152 |
/**
|
|
1153 |
* Returns {@code true} if the two Components have a common ParallelGroup
|
|
1154 |
* ancestor along the particular axis.
|
|
1155 |
*/
|
|
1156 |
private boolean areParallelSiblings(Component source, Component target,
|
|
1157 |
int axis) {
|
|
1158 |
ComponentInfo sourceInfo = getComponentInfo(source);
|
|
1159 |
ComponentInfo targetInfo = getComponentInfo(target);
|
|
1160 |
Spring sourceSpring;
|
|
1161 |
Spring targetSpring;
|
|
1162 |
if (axis == HORIZONTAL) {
|
|
1163 |
sourceSpring = sourceInfo.horizontalSpring;
|
|
1164 |
targetSpring = targetInfo.horizontalSpring;
|
|
1165 |
} else {
|
|
1166 |
sourceSpring = sourceInfo.verticalSpring;
|
|
1167 |
targetSpring = targetInfo.verticalSpring;
|
|
1168 |
}
|
|
1169 |
Set<Spring> sourcePath = tmpParallelSet;
|
|
1170 |
sourcePath.clear();
|
|
1171 |
Spring spring = sourceSpring.getParent();
|
|
1172 |
while (spring != null) {
|
|
1173 |
sourcePath.add(spring);
|
|
1174 |
spring = spring.getParent();
|
|
1175 |
}
|
|
1176 |
spring = targetSpring.getParent();
|
|
1177 |
while (spring != null) {
|
|
1178 |
if (sourcePath.contains(spring)) {
|
|
1179 |
sourcePath.clear();
|
|
1180 |
while (spring != null) {
|
|
1181 |
if (spring instanceof ParallelGroup) {
|
|
1182 |
return true;
|
|
1183 |
}
|
|
1184 |
spring = spring.getParent();
|
|
1185 |
}
|
|
1186 |
return false;
|
|
1187 |
}
|
|
1188 |
spring = spring.getParent();
|
|
1189 |
}
|
|
1190 |
sourcePath.clear();
|
|
1191 |
return false;
|
|
1192 |
}
|
|
1193 |
|
|
1194 |
private boolean isLeftToRight() {
|
|
1195 |
return host.getComponentOrientation().isLeftToRight();
|
|
1196 |
}
|
|
1197 |
|
|
1198 |
/**
|
|
1199 |
* Returns a string representation of this {@code GroupLayout}.
|
|
1200 |
* This method is intended to be used for debugging purposes,
|
|
1201 |
* and the content and format of the returned string may vary
|
|
1202 |
* between implementations.
|
|
1203 |
*
|
|
1204 |
* @return a string representation of this {@code GroupLayout}
|
|
1205 |
**/
|
|
1206 |
public String toString() {
|
|
1207 |
if (springsChanged) {
|
|
1208 |
registerComponents(horizontalGroup, HORIZONTAL);
|
|
1209 |
registerComponents(verticalGroup, VERTICAL);
|
|
1210 |
}
|
|
1211 |
StringBuffer buffer = new StringBuffer();
|
|
1212 |
buffer.append("HORIZONTAL\n");
|
|
1213 |
createSpringDescription(buffer, horizontalGroup, " ", HORIZONTAL);
|
|
1214 |
buffer.append("\nVERTICAL\n");
|
|
1215 |
createSpringDescription(buffer, verticalGroup, " ", VERTICAL);
|
|
1216 |
return buffer.toString();
|
|
1217 |
}
|
|
1218 |
|
|
1219 |
private void createSpringDescription(StringBuffer buffer, Spring spring,
|
|
1220 |
String indent, int axis) {
|
|
1221 |
String origin = "";
|
|
1222 |
String padding = "";
|
|
1223 |
if (spring instanceof ComponentSpring) {
|
|
1224 |
ComponentSpring cSpring = (ComponentSpring)spring;
|
|
1225 |
origin = Integer.toString(cSpring.getOrigin()) + " ";
|
|
1226 |
String name = cSpring.getComponent().getName();
|
|
1227 |
if (name != null) {
|
|
1228 |
origin = "name=" + name + ", ";
|
|
1229 |
}
|
|
1230 |
}
|
|
1231 |
if (spring instanceof AutoPreferredGapSpring) {
|
|
1232 |
AutoPreferredGapSpring paddingSpring =
|
|
1233 |
(AutoPreferredGapSpring)spring;
|
|
1234 |
padding = ", userCreated=" + paddingSpring.getUserCreated() +
|
|
1235 |
", matches=" + paddingSpring.getMatchDescription();
|
|
1236 |
}
|
|
1237 |
buffer.append(indent + spring.getClass().getName() + " " +
|
|
1238 |
Integer.toHexString(spring.hashCode()) + " " +
|
|
1239 |
origin +
|
|
1240 |
", size=" + spring.getSize() +
|
|
1241 |
", alignment=" + spring.getAlignment() +
|
|
1242 |
" prefs=[" + spring.getMinimumSize(axis) +
|
|
1243 |
" " + spring.getPreferredSize(axis) +
|
|
1244 |
" " + spring.getMaximumSize(axis) +
|
|
1245 |
padding + "]\n");
|
|
1246 |
if (spring instanceof Group) {
|
|
1247 |
List<Spring> springs = ((Group)spring).springs;
|
|
1248 |
indent += " ";
|
|
1249 |
for (int counter = 0; counter < springs.size(); counter++) {
|
|
1250 |
createSpringDescription(buffer, springs.get(counter), indent,
|
|
1251 |
axis);
|
|
1252 |
}
|
|
1253 |
}
|
|
1254 |
}
|
|
1255 |
|
|
1256 |
|
|
1257 |
/**
|
|
1258 |
* Spring consists of a range: min, pref and max, a value some where in
|
|
1259 |
* the middle of that, and a location. Spring caches the
|
|
1260 |
* min/max/pref. If the min/pref/max has internally changes, or needs
|
|
1261 |
* to be updated you must invoke clear.
|
|
1262 |
*/
|
|
1263 |
private abstract class Spring {
|
|
1264 |
private int size;
|
|
1265 |
private int min;
|
|
1266 |
private int max;
|
|
1267 |
private int pref;
|
|
1268 |
private Spring parent;
|
|
1269 |
|
|
1270 |
private Alignment alignment;
|
|
1271 |
|
|
1272 |
Spring() {
|
|
1273 |
min = pref = max = UNSET;
|
|
1274 |
}
|
|
1275 |
|
|
1276 |
/**
|
|
1277 |
* Calculates and returns the minimum size.
|
|
1278 |
*
|
|
1279 |
* @param axis the axis of layout; one of HORIZONTAL or VERTICAL
|
|
1280 |
* @return the minimum size
|
|
1281 |
*/
|
|
1282 |
abstract int calculateMinimumSize(int axis);
|
|
1283 |
|
|
1284 |
/**
|
|
1285 |
* Calculates and returns the preferred size.
|
|
1286 |
*
|
|
1287 |
* @param axis the axis of layout; one of HORIZONTAL or VERTICAL
|
|
1288 |
* @return the preferred size
|
|
1289 |
*/
|
|
1290 |
abstract int calculatePreferredSize(int axis);
|
|
1291 |
|
|
1292 |
/**
|
|
1293 |
* Calculates and returns the minimum size.
|
|
1294 |
*
|
|
1295 |
* @param axis the axis of layout; one of HORIZONTAL or VERTICAL
|
|
1296 |
* @return the minimum size
|
|
1297 |
*/
|
|
1298 |
abstract int calculateMaximumSize(int axis);
|
|
1299 |
|
|
1300 |
/**
|
|
1301 |
* Sets the parent of this Spring.
|
|
1302 |
*/
|
|
1303 |
void setParent(Spring parent) {
|
|
1304 |
this.parent = parent;
|
|
1305 |
}
|
|
1306 |
|
|
1307 |
/**
|
|
1308 |
* Returns the parent of this spring.
|
|
1309 |
*/
|
|
1310 |
Spring getParent() {
|
|
1311 |
return parent;
|
|
1312 |
}
|
|
1313 |
|
|
1314 |
// This is here purely as a conveniance for ParallelGroup to avoid
|
|
1315 |
// having to track alignment separately.
|
|
1316 |
void setAlignment(Alignment alignment) {
|
|
1317 |
this.alignment = alignment;
|
|
1318 |
}
|
|
1319 |
|
|
1320 |
/**
|
|
1321 |
* Alignment for this Spring, this may be null.
|
|
1322 |
*/
|
|
1323 |
Alignment getAlignment() {
|
|
1324 |
return alignment;
|
|
1325 |
}
|
|
1326 |
|
|
1327 |
/**
|
|
1328 |
* Returns the minimum size.
|
|
1329 |
*/
|
|
1330 |
final int getMinimumSize(int axis) {
|
|
1331 |
if (min == UNSET) {
|
|
1332 |
min = constrain(calculateMinimumSize(axis));
|
|
1333 |
}
|
|
1334 |
return min;
|
|
1335 |
}
|
|
1336 |
|
|
1337 |
/**
|
|
1338 |
* Returns the preferred size.
|
|
1339 |
*/
|
|
1340 |
final int getPreferredSize(int axis) {
|
|
1341 |
if (pref == UNSET) {
|
|
1342 |
pref = constrain(calculatePreferredSize(axis));
|
|
1343 |
}
|
|
1344 |
return pref;
|
|
1345 |
}
|
|
1346 |
|
|
1347 |
/**
|
|
1348 |
* Returns the maximum size.
|
|
1349 |
*/
|
|
1350 |
final int getMaximumSize(int axis) {
|
|
1351 |
if (max == UNSET) {
|
|
1352 |
max = constrain(calculateMaximumSize(axis));
|
|
1353 |
}
|
|
1354 |
return max;
|
|
1355 |
}
|
|
1356 |
|
|
1357 |
/**
|
|
1358 |
* Sets the value and location of the spring. Subclasses
|
|
1359 |
* will want to invoke super, then do any additional sizing.
|
|
1360 |
*
|
|
1361 |
* @param axis HORIZONTAL or VERTICAL
|
|
1362 |
* @param origin of this Spring
|
|
1363 |
* @param size of the Spring. If size is UNSET, this invokes
|
|
1364 |
* clear.
|
|
1365 |
*/
|
|
1366 |
void setSize(int axis, int origin, int size) {
|
|
1367 |
this.size = size;
|
|
1368 |
if (size == UNSET) {
|
|
1369 |
unset();
|
|
1370 |
}
|
|
1371 |
}
|
|
1372 |
|
|
1373 |
/**
|
|
1374 |
* Resets the cached min/max/pref.
|
|
1375 |
*/
|
|
1376 |
void unset() {
|
|
1377 |
size = min = pref = max = UNSET;
|
|
1378 |
}
|
|
1379 |
|
|
1380 |
/**
|
|
1381 |
* Returns the current size.
|
|
1382 |
*/
|
|
1383 |
int getSize() {
|
|
1384 |
return size;
|
|
1385 |
}
|
|
1386 |
|
|
1387 |
int constrain(int value) {
|
|
1388 |
return Math.min(value, Short.MAX_VALUE);
|
|
1389 |
}
|
|
1390 |
|
|
1391 |
int getBaseline() {
|
|
1392 |
return -1;
|
|
1393 |
}
|
|
1394 |
|
|
1395 |
BaselineResizeBehavior getBaselineResizeBehavior() {
|
|
1396 |
return BaselineResizeBehavior.OTHER;
|
|
1397 |
}
|
|
1398 |
|
|
1399 |
final boolean isResizable(int axis) {
|
|
1400 |
int min = getMinimumSize(axis);
|
|
1401 |
int pref = getPreferredSize(axis);
|
|
1402 |
return (min != pref || pref != getMaximumSize(axis));
|
|
1403 |
}
|
|
1404 |
|
|
1405 |
/**
|
|
1406 |
* Returns {@code true} if this spring will ALWAYS have a zero
|
|
1407 |
* size. This should NOT check the current size, rather it's
|
|
1408 |
* meant to quickly test if this Spring will always have a
|
|
1409 |
* zero size.
|
|
1410 |
*
|
|
1411 |
* @param treatAutopaddingAsZeroSized if {@code true}, auto padding
|
|
1412 |
* springs should be treated as having a size of {@code 0}
|
|
1413 |
* @return {@code true} if this spring will have a zero size,
|
|
1414 |
* {@code false} otherwise
|
|
1415 |
*/
|
|
1416 |
abstract boolean willHaveZeroSize(boolean treatAutopaddingAsZeroSized);
|
|
1417 |
}
|
|
1418 |
|
|
1419 |
/**
|
|
1420 |
* {@code Group} provides the basis for the two types of
|
|
1421 |
* operations supported by {@code GroupLayout}: laying out
|
|
1422 |
* components one after another ({@link SequentialGroup SequentialGroup})
|
|
1423 |
* or aligned ({@link ParallelGroup ParallelGroup}). {@code Group} and
|
|
1424 |
* its subclasses have no public constructor; to create one use
|
|
1425 |
* one of {@code createSequentialGroup} or
|
|
1426 |
* {@code createParallelGroup}. Additionally, taking a {@code Group}
|
|
1427 |
* created from one {@code GroupLayout} and using it with another
|
|
1428 |
* will produce undefined results.
|
|
1429 |
* <p>
|
|
1430 |
* Various methods in {@code Group} and its subclasses allow you
|
|
1431 |
* to explicitly specify the range. The arguments to these methods
|
|
1432 |
* can take two forms, either a value greater than or equal to 0,
|
|
1433 |
* or one of {@code DEFAULT_SIZE} or {@code PREFERRED_SIZE}. A
|
|
1434 |
* value greater than or equal to {@code 0} indicates a specific
|
|
1435 |
* size. {@code DEFAULT_SIZE} indicates the corresponding size
|
|
1436 |
* from the component should be used. For example, if {@code
|
|
1437 |
* DEFAULT_SIZE} is passed as the minimum size argument, the
|
|
1438 |
* minimum size is obtained from invoking {@code getMinimumSize}
|
|
1439 |
* on the component. Likewise, {@code PREFERRED_SIZE} indicates
|
|
1440 |
* the value from {@code getPreferredSize} should be used.
|
|
1441 |
* The following example adds {@code myComponent} to {@code group}
|
|
1442 |
* with specific values for the range. That is, the minimum is
|
|
1443 |
* explicitly specified as 100, preferred as 200, and maximum as
|
|
1444 |
* 300.
|
|
1445 |
* <pre>
|
|
1446 |
* group.addComponent(myComponent, 100, 200, 300);
|
|
1447 |
* </pre>
|
|
1448 |
* The following example adds {@code myComponent} to {@code group} using
|
|
1449 |
* a combination of the forms. The minimum size is forced to be the
|
|
1450 |
* same as the preferred size, the preferred size is determined by
|
|
1451 |
* using {@code myComponent.getPreferredSize} and the maximum is
|
|
1452 |
* determined by invoking {@code getMaximumSize} on the component.
|
|
1453 |
* <pre>
|
|
1454 |
* group.addComponent(myComponent, GroupLayout.PREFERRED_SIZE,
|
|
1455 |
* GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE);
|
|
1456 |
* </pre>
|
|
1457 |
* <p>
|
|
1458 |
* Unless otherwise specified all the methods of {@code Group} and
|
|
1459 |
* its subclasses that allow you to specify a range throw an
|
|
1460 |
* {@code IllegalArgumentException} if passed an invalid range. An
|
|
1461 |
* invalid range is one in which any of the values are < 0 and
|
|
1462 |
* not one of {@code PREFERRED_SIZE} or {@code DEFAULT_SIZE}, or
|
|
1463 |
* the following is not met (for specific values): {@code min}
|
|
1464 |
* <= {@code pref} <= {@code max}.
|
|
1465 |
* <p>
|
|
1466 |
* Similarly any methods that take a {@code Component} throw a
|
|
1467 |
* {@code NullPointerException} if passed {@code null} and any methods
|
|
1468 |
* that take a {@code Group} throw an {@code IllegalArgumentException} if
|
|
1469 |
* passed {@code null}.
|
|
1470 |
*
|
|
1471 |
* @see #createSequentialGroup
|
|
1472 |
* @see #createParallelGroup
|
|
1473 |
* @since 1.6
|
|
1474 |
*/
|
|
1475 |
public abstract class Group extends Spring {
|
|
1476 |
// private int origin;
|
|
1477 |
// private int size;
|
|
1478 |
List<Spring> springs;
|
|
1479 |
|
|
1480 |
Group() {
|
|
1481 |
springs = new ArrayList<Spring>();
|
|
1482 |
}
|
|
1483 |
|
|
1484 |
/**
|
|
1485 |
* Adds a {@code Group} to this {@code Group}.
|
|
1486 |
*
|
|
1487 |
* @param group the {@code Group} to add
|
|
1488 |
* @return this {@code Group}
|
|
1489 |
*/
|
|
1490 |
public Group addGroup(Group group) {
|
|
1491 |
return addSpring(group);
|
|
1492 |
}
|
|
1493 |
|
|
1494 |
/**
|
|
1495 |
* Adds a {@code Component} to this {@code Group}.
|
|
1496 |
*
|
|
1497 |
* @param component the {@code Component} to add
|
|
1498 |
* @return this {@code Group}
|
|
1499 |
*/
|
|
1500 |
public Group addComponent(Component component) {
|
|
1501 |
return addComponent(component, DEFAULT_SIZE, DEFAULT_SIZE,
|
|
1502 |
DEFAULT_SIZE);
|
|
1503 |
}
|
|
1504 |
|
|
1505 |
/**
|
|
1506 |
* Adds a {@code Component} to this {@code Group}
|
|
1507 |
* with the specified size.
|
|
1508 |
*
|
|
1509 |
* @param component the {@code Component} to add
|
|
1510 |
* @param min the minimum size or one of {@code DEFAULT_SIZE} or
|
|
1511 |
* {@code PREFERRED_SIZE}
|
|
1512 |
* @param pref the preferred size or one of {@code DEFAULT_SIZE} or
|
|
1513 |
* {@code PREFERRED_SIZE}
|
|
1514 |
* @param max the maximum size or one of {@code DEFAULT_SIZE} or
|
|
1515 |
* {@code PREFERRED_SIZE}
|
|
1516 |
* @return this {@code Group}
|
|
1517 |
*/
|
|
1518 |
public Group addComponent(Component component, int min, int pref,
|
|
1519 |
int max) {
|
|
1520 |
return addSpring(new ComponentSpring(component, min, pref, max));
|
|
1521 |
}
|
|
1522 |
|
|
1523 |
/**
|
|
1524 |
* Adds a rigid gap to this {@code Group}.
|
|
1525 |
*
|
|
1526 |
* @param size the size of the gap
|
|
1527 |
* @return this {@code Group}
|
|
1528 |
* @throws IllegalArgumentException if {@code size} is less than
|
|
1529 |
* {@code 0}
|
|
1530 |
*/
|
|
1531 |
public Group addGap(int size) {
|
|
1532 |
return addGap(size, size, size);
|
|
1533 |
}
|
|
1534 |
|
|
1535 |
/**
|
|
1536 |
* Adds a gap to this {@code Group} with the specified size.
|
|
1537 |
*
|
|
1538 |
* @param min the minimum size of the gap
|
|
1539 |
* @param pref the preferred size of the gap
|
|
1540 |
* @param max the maximum size of the gap
|
|
1541 |
* @throws IllegalArgumentException if any of the values are
|
|
1542 |
* less than {@code 0}
|
|
1543 |
* @return this {@code Group}
|
|
1544 |
*/
|
|
1545 |
public Group addGap(int min, int pref, int max) {
|
|
1546 |
return addSpring(new GapSpring(min, pref, max));
|
|
1547 |
}
|
|
1548 |
|
|
1549 |
Spring getSpring(int index) {
|
|
1550 |
return springs.get(index);
|
|
1551 |
}
|
|
1552 |
|
|
1553 |
int indexOf(Spring spring) {
|
|
1554 |
return springs.indexOf(spring);
|
|
1555 |
}
|
|
1556 |
|
|
1557 |
/**
|
|
1558 |
* Adds the Spring to the list of {@code Spring}s and returns
|
|
1559 |
* the receiver.
|
|
1560 |
*/
|
|
1561 |
Group addSpring(Spring spring) {
|
|
1562 |
springs.add(spring);
|
|
1563 |
spring.setParent(this);
|
|
1564 |
if (!(spring instanceof AutoPreferredGapSpring) ||
|
|
1565 |
!((AutoPreferredGapSpring)spring).getUserCreated()) {
|
|
1566 |
springsChanged = true;
|
|
1567 |
}
|
|
1568 |
return this;
|
|
1569 |
}
|
|
1570 |
|
|
1571 |
//
|
|
1572 |
// Spring methods
|
|
1573 |
//
|
|
1574 |
|
|
1575 |
void setSize(int axis, int origin, int size) {
|
|
1576 |
super.setSize(axis, origin, size);
|
|
1577 |
if (size == UNSET) {
|
|
1578 |
for (int counter = springs.size() - 1; counter >= 0;
|
|
1579 |
counter--) {
|
|
1580 |
getSpring(counter).setSize(axis, origin, size);
|
|
1581 |
}
|
|
1582 |
} else {
|
|
1583 |
setValidSize(axis, origin, size);
|
|
1584 |
}
|
|
1585 |
}
|
|
1586 |
|
|
1587 |
/**
|
|
1588 |
* This is invoked from {@code setSize} if passed a value
|
|
1589 |
* other than UNSET.
|
|
1590 |
*/
|
|
1591 |
abstract void setValidSize(int axis, int origin, int size);
|
|
1592 |
|
|
1593 |
int calculateMinimumSize(int axis) {
|
|
1594 |
return calculateSize(axis, MIN_SIZE);
|
|
1595 |
}
|
|
1596 |
|
|
1597 |
int calculatePreferredSize(int axis) {
|
|
1598 |
return calculateSize(axis, PREF_SIZE);
|
|
1599 |
}
|
|
1600 |
|
|
1601 |
int calculateMaximumSize(int axis) {
|
|
1602 |
return calculateSize(axis, MAX_SIZE);
|
|
1603 |
}
|
|
1604 |
|
|
1605 |
/**
|
|
1606 |
* Calculates the specified size. This is called from
|
|
1607 |
* one of the {@code getMinimumSize0},
|
|
1608 |
* {@code getPreferredSize0} or
|
|
1609 |
* {@code getMaximumSize0} methods. This will invoke
|
|
1610 |
* to {@code operator} to combine the values.
|
|
1611 |
*/
|
|
1612 |
int calculateSize(int axis, int type) {
|
|
1613 |
int count = springs.size();
|
|
1614 |
if (count == 0) {
|
|
1615 |
return 0;
|
|
1616 |
}
|
|
1617 |
if (count == 1) {
|
|
1618 |
return getSpringSize(getSpring(0), axis, type);
|
|
1619 |
}
|
|
1620 |
int size = constrain(operator(getSpringSize(getSpring(0), axis,
|
|
1621 |
type), getSpringSize(getSpring(1), axis, type)));
|
|
1622 |
for (int counter = 2; counter < count; counter++) {
|
|
1623 |
size = constrain(operator(size, getSpringSize(
|
|
1624 |
getSpring(counter), axis, type)));
|
|
1625 |
}
|
|
1626 |
return size;
|
|
1627 |
}
|
|
1628 |
|
|
1629 |
int getSpringSize(Spring spring, int axis, int type) {
|
|
1630 |
switch(type) {
|
|
1631 |
case MIN_SIZE:
|
|
1632 |
return spring.getMinimumSize(axis);
|
|
1633 |
case PREF_SIZE:
|
|
1634 |
return spring.getPreferredSize(axis);
|
|
1635 |
case MAX_SIZE:
|
|
1636 |
return spring.getMaximumSize(axis);
|
|
1637 |
}
|
|
1638 |
assert false;
|
|
1639 |
return 0;
|
|
1640 |
}
|
|
1641 |
|
|
1642 |
/**
|
|
1643 |
* Used to compute how the two values representing two springs
|
|
1644 |
* will be combined. For example, a group that layed things out
|
|
1645 |
* one after the next would return {@code a + b}.
|
|
1646 |
*/
|
|
1647 |
abstract int operator(int a, int b);
|
|
1648 |
|
|
1649 |
//
|
|
1650 |
// Padding
|
|
1651 |
//
|
|
1652 |
|
|
1653 |
/**
|
|
1654 |
* Adjusts the autopadding springs in this group and its children.
|
|
1655 |
* If {@code insert} is true this will insert auto padding
|
|
1656 |
* springs, otherwise this will only adjust the springs that
|
|
1657 |
* comprise auto preferred padding springs.
|
|
1658 |
*
|
|
1659 |
* @param axis the axis of the springs; HORIZONTAL or VERTICAL
|
|
1660 |
* @param leadingPadding List of AutopaddingSprings that occur before
|
|
1661 |
* this Group
|
|
1662 |
* @param trailingPadding any trailing autopadding springs are added
|
|
1663 |
* to this on exit
|
|
1664 |
* @param leading List of ComponentSprings that occur before this Group
|
|
1665 |
* @param trailing any trailing ComponentSpring are added to this
|
|
1666 |
* List
|
|
1667 |
* @param insert Whether or not to insert AutopaddingSprings or just
|
|
1668 |
* adjust any existing AutopaddingSprings.
|
|
1669 |
*/
|
|
1670 |
abstract void insertAutopadding(int axis,
|
|
1671 |
List<AutoPreferredGapSpring> leadingPadding,
|
|
1672 |
List<AutoPreferredGapSpring> trailingPadding,
|
|
1673 |
List<ComponentSpring> leading, List<ComponentSpring> trailing,
|
|
1674 |
boolean insert);
|
|
1675 |
|
|
1676 |
/**
|
|
1677 |
* Removes any AutopaddingSprings for this Group and its children.
|
|
1678 |
*/
|
|
1679 |
void removeAutopadding() {
|
|
1680 |
unset();
|
|
1681 |
for (int counter = springs.size() - 1; counter >= 0; counter--) {
|
|
1682 |
Spring spring = springs.get(counter);
|
|
1683 |
if (spring instanceof AutoPreferredGapSpring) {
|
|
1684 |
if (((AutoPreferredGapSpring)spring).getUserCreated()) {
|
|
1685 |
((AutoPreferredGapSpring)spring).reset();
|
|
1686 |
} else {
|
|
1687 |
springs.remove(counter);
|
|
1688 |
}
|
|
1689 |
} else if (spring instanceof Group) {
|
|
1690 |
((Group)spring).removeAutopadding();
|
|
1691 |
}
|
|
1692 |
}
|
|
1693 |
}
|
|
1694 |
|
|
1695 |
void unsetAutopadding() {
|
|
1696 |
// Clear cached pref/min/max.
|
|
1697 |
unset();
|
|
1698 |
for (int counter = springs.size() - 1; counter >= 0; counter--) {
|
|
1699 |
Spring spring = springs.get(counter);
|
|
1700 |
if (spring instanceof AutoPreferredGapSpring) {
|
|
1701 |
((AutoPreferredGapSpring)spring).unset();
|
|
1702 |
} else if (spring instanceof Group) {
|
|
1703 |
((Group)spring).unsetAutopadding();
|
|
1704 |
}
|
|
1705 |
}
|
|
1706 |
}
|
|
1707 |
|
|
1708 |
void calculateAutopadding(int axis) {
|
|
1709 |
for (int counter = springs.size() - 1; counter >= 0; counter--) {
|
|
1710 |
Spring spring = springs.get(counter);
|
|
1711 |
if (spring instanceof AutoPreferredGapSpring) {
|
|
1712 |
// Force size to be reset.
|
|
1713 |
spring.unset();
|
|
1714 |
((AutoPreferredGapSpring)spring).calculatePadding(axis);
|
|
1715 |
} else if (spring instanceof Group) {
|
|
1716 |
((Group)spring).calculateAutopadding(axis);
|
|
1717 |
}
|
|
1718 |
}
|
|
1719 |
// Clear cached pref/min/max.
|
|
1720 |
unset();
|
|
1721 |
}
|
|
1722 |
|
|
1723 |
@Override
|
|
1724 |
boolean willHaveZeroSize(boolean treatAutopaddingAsZeroSized) {
|
|
1725 |
for (int i = springs.size() - 1; i >= 0; i--) {
|
|
1726 |
Spring spring = springs.get(i);
|
|
1727 |
if (!spring.willHaveZeroSize(treatAutopaddingAsZeroSized)) {
|
|
1728 |
return false;
|
|
1729 |
}
|
|
1730 |
}
|
|
1731 |
return true;
|
|
1732 |
}
|
|
1733 |
}
|
|
1734 |
|
|
1735 |
|
|
1736 |
/**
|
|
1737 |
* A {@code Group} that positions and sizes its elements
|
|
1738 |
* sequentially, one after another. This class has no public
|
|
1739 |
* constructor, use the {@code createSequentialGroup} method
|
|
1740 |
* to create one.
|
|
1741 |
* <p>
|
|
1742 |
* In order to align a {@code SequentialGroup} along the baseline
|
|
1743 |
* of a baseline aligned {@code ParallelGroup} you need to specify
|
|
1744 |
* which of the elements of the {@code SequentialGroup} is used to
|
|
1745 |
* determine the baseline. The element used to calculate the
|
|
1746 |
* baseline is specified using one of the {@code add} methods that
|
|
1747 |
* take a {@code boolean}. The last element added with a value of
|
|
1748 |
* {@code true} for {@code useAsBaseline} is used to calculate the
|
|
1749 |
* baseline.
|
|
1750 |
*
|
|
1751 |
* @see #createSequentialGroup
|
|
1752 |
* @since 1.6
|
|
1753 |
*/
|
|
1754 |
public class SequentialGroup extends Group {
|
|
1755 |
private Spring baselineSpring;
|
|
1756 |
|
|
1757 |
SequentialGroup() {
|
|
1758 |
}
|
|
1759 |
|
|
1760 |
/**
|
|
1761 |
* {@inheritDoc}
|
|
1762 |
*/
|
|
1763 |
public SequentialGroup addGroup(Group group) {
|
|
1764 |
return (SequentialGroup)super.addGroup(group);
|
|
1765 |
}
|
|
1766 |
|
|
1767 |
/**
|
|
1768 |
* Adds a {@code Group} to this {@code Group}.
|
|
1769 |
*
|
|
1770 |
* @param group the {@code Group} to add
|
|
1771 |
* @param useAsBaseline whether the specified {@code Group} should
|
|
1772 |
* be used to calculate the baseline for this {@code Group}
|
|
1773 |
* @return this {@code Group}
|
|
1774 |
*/
|
|
1775 |
public SequentialGroup addGroup(boolean useAsBaseline, Group group) {
|
|
1776 |
super.addGroup(group);
|
|
1777 |
if (useAsBaseline) {
|
|
1778 |
baselineSpring = group;
|
|
1779 |
}
|
|
1780 |
return this;
|
|
1781 |
}
|
|
1782 |
|
|
1783 |
/**
|
|
1784 |
* {@inheritDoc}
|
|
1785 |
*/
|
|
1786 |
public SequentialGroup addComponent(Component component) {
|
|
1787 |
return (SequentialGroup)super.addComponent(component);
|
|
1788 |
}
|
|
1789 |
|
|
1790 |
/**
|
|
1791 |
* Adds a {@code Component} to this {@code Group}.
|
|
1792 |
*
|
|
1793 |
* @param useAsBaseline whether the specified {@code Component} should
|
|
1794 |
* be used to calculate the baseline for this {@code Group}
|
|
1795 |
* @param component the {@code Component} to add
|
|
1796 |
* @return this {@code Group}
|
|
1797 |
*/
|
|
1798 |
public SequentialGroup addComponent(boolean useAsBaseline,
|
|
1799 |
Component component) {
|
|
1800 |
super.addComponent(component);
|
|
1801 |
if (useAsBaseline) {
|
|
1802 |
baselineSpring = springs.get(springs.size() - 1);
|
|
1803 |
}
|
|
1804 |
return this;
|
|
1805 |
}
|
|
1806 |
|
|
1807 |
/**
|
|
1808 |
* {@inheritDoc}
|
|
1809 |
*/
|
|
1810 |
public SequentialGroup addComponent(Component component, int min,
|
|
1811 |
int pref, int max) {
|
|
1812 |
return (SequentialGroup)super.addComponent(
|
|
1813 |
component, min, pref, max);
|
|
1814 |
}
|
|
1815 |
|
|
1816 |
/**
|
|
1817 |
* Adds a {@code Component} to this {@code Group}
|
|
1818 |
* with the specified size.
|
|
1819 |
*
|
|
1820 |
* @param useAsBaseline whether the specified {@code Component} should
|
|
1821 |
* be used to calculate the baseline for this {@code Group}
|
|
1822 |
* @param component the {@code Component} to add
|
|
1823 |
* @param min the minimum size or one of {@code DEFAULT_SIZE} or
|
|
1824 |
* {@code PREFERRED_SIZE}
|
|
1825 |
* @param pref the preferred size or one of {@code DEFAULT_SIZE} or
|
|
1826 |
* {@code PREFERRED_SIZE}
|
|
1827 |
* @param max the maximum size or one of {@code DEFAULT_SIZE} or
|
|
1828 |
* {@code PREFERRED_SIZE}
|
|
1829 |
* @return this {@code Group}
|
|
1830 |
*/
|
|
1831 |
public SequentialGroup addComponent(boolean useAsBaseline,
|
|
1832 |
Component component, int min, int pref, int max) {
|
|
1833 |
super.addComponent(component, min, pref, max);
|
|
1834 |
if (useAsBaseline) {
|
|
1835 |
baselineSpring = springs.get(springs.size() - 1);
|
|
1836 |
}
|
|
1837 |
return this;
|
|
1838 |
}
|
|
1839 |
|
|
1840 |
/**
|
|
1841 |
* {@inheritDoc}
|
|
1842 |
*/
|
|
1843 |
public SequentialGroup addGap(int size) {
|
|
1844 |
return (SequentialGroup)super.addGap(size);
|
|
1845 |
}
|
|
1846 |
|
|
1847 |
/**
|
|
1848 |
* {@inheritDoc}
|
|
1849 |
*/
|
|
1850 |
public SequentialGroup addGap(int min, int pref, int max) {
|
|
1851 |
return (SequentialGroup)super.addGap(min, pref, max);
|
|
1852 |
}
|
|
1853 |
|
|
1854 |
/**
|
|
1855 |
* Adds an element representing the preferred gap between two
|
|
1856 |
* components. The element created to represent the gap is not
|
|
1857 |
* resizable.
|
|
1858 |
*
|
|
1859 |
* @param comp1 the first component
|
|
1860 |
* @param comp2 the second component
|
|
1861 |
* @param type the type of gap; one of the constants defined by
|
|
1862 |
* {@code LayoutStyle}
|
|
1863 |
* @return this {@code SequentialGroup}
|
|
1864 |
* @throws IllegalArgumentException if {@code type}, {@code comp1} or
|
|
1865 |
* {@code comp2} is {@code null}
|
|
1866 |
* @see LayoutStyle
|
|
1867 |
*/
|
|
1868 |
public SequentialGroup addPreferredGap(JComponent comp1,
|
|
1869 |
JComponent comp2, ComponentPlacement type) {
|
|
1870 |
return addPreferredGap(comp1, comp2, type, DEFAULT_SIZE,
|
|
1871 |
PREFERRED_SIZE);
|
|
1872 |
}
|
|
1873 |
|
|
1874 |
/**
|
|
1875 |
* Adds an element representing the preferred gap between two
|
|
1876 |
* components.
|
|
1877 |
*
|
|
1878 |
* @param comp1 the first component
|
|
1879 |
* @param comp2 the second component
|
|
1880 |
* @param type the type of gap
|
|
1881 |
* @param pref the preferred size of the grap; one of
|
|
1882 |
* {@code DEFAULT_SIZE} or a value >= 0
|
|
1883 |
* @param max the maximum size of the gap; one of
|
|
1884 |
* {@code DEFAULT_SIZE}, {@code PREFERRED_SIZE}
|
|
1885 |
* or a value >= 0
|
|
1886 |
* @return this {@code SequentialGroup}
|
|
1887 |
* @throws IllegalArgumentException if {@code type}, {@code comp1} or
|
|
1888 |
* {@code comp2} is {@code null}
|
|
1889 |
* @see LayoutStyle
|
|
1890 |
*/
|
|
1891 |
public SequentialGroup addPreferredGap(JComponent comp1,
|
|
1892 |
JComponent comp2, ComponentPlacement type, int pref,
|
|
1893 |
int max) {
|
|
1894 |
if (type == null) {
|
|
1895 |
throw new IllegalArgumentException("Type must be non-null");
|
|
1896 |
}
|
|
1897 |
if (comp1 == null || comp2 == null) {
|
|
1898 |
throw new IllegalArgumentException(
|
|
1899 |
"Components must be non-null");
|
|
1900 |
}
|
|
1901 |
checkPreferredGapValues(pref, max);
|
|
1902 |
return (SequentialGroup)addSpring(new PreferredGapSpring(
|
|
1903 |
comp1, comp2, type, pref, max));
|
|
1904 |
}
|
|
1905 |
|
|
1906 |
/**
|
|
1907 |
* Adds an element representing the preferred gap between the
|
|
1908 |
* nearest components. During layout, neighboring
|
|
1909 |
* components are found, and the size of the added gap is set
|
|
1910 |
* based on the preferred gap between the components. If no
|
|
1911 |
* neighboring components are found the gap has a size of {@code 0}.
|
|
1912 |
* <p>
|
|
1913 |
* The element created to represent the gap is not
|
|
1914 |
* resizable.
|
|
1915 |
*
|
|
1916 |
* @param type the type of gap; one of
|
|
1917 |
* {@code LayoutStyle.ComponentPlacement.RELATED} or
|
|
1918 |
* {@code LayoutStyle.ComponentPlacement.UNRELATED}
|
|
1919 |
* @return this {@code SequentialGroup}
|
|
1920 |
* @see LayoutStyle
|
|
1921 |
* @throws IllegalArgumentException if {@code type} is not one of
|
|
1922 |
* {@code LayoutStyle.ComponentPlacement.RELATED} or
|
|
1923 |
* {@code LayoutStyle.ComponentPlacement.UNRELATED}
|
|
1924 |
*/
|
|
1925 |
public SequentialGroup addPreferredGap(ComponentPlacement type) {
|
|
1926 |
return addPreferredGap(type, DEFAULT_SIZE, DEFAULT_SIZE);
|
|
1927 |
}
|
|
1928 |
|
|
1929 |
/**
|
|
1930 |
* Adds an element representing the preferred gap between the
|
|
1931 |
* nearest components. During layout, neighboring
|
|
1932 |
* components are found, and the minimum of this
|
|
1933 |
* gap is set based on the size of the preferred gap between the
|
|
1934 |
* neighboring components. If no neighboring components are found the
|
|
1935 |
* minimum size is set to 0.
|
|
1936 |
*
|
|
1937 |
* @param type the type of gap; one of
|
|
1938 |
* {@code LayoutStyle.ComponentPlacement.RELATED} or
|
|
1939 |
* {@code LayoutStyle.ComponentPlacement.UNRELATED}
|
|
1940 |
* @param pref the preferred size of the grap; one of
|
|
1941 |
* {@code DEFAULT_SIZE} or a value >= 0
|
|
1942 |
* @param max the maximum size of the gap; one of
|
|
1943 |
* {@code DEFAULT_SIZE}, {@code PREFERRED_SIZE}
|
|
1944 |
* or a value >= 0
|
|
1945 |
* @return this {@code SequentialGroup}
|
|
1946 |
* @throws IllegalArgumentException if {@code type} is not one of
|
|
1947 |
* {@code LayoutStyle.ComponentPlacement.RELATED} or
|
|
1948 |
* {@code LayoutStyle.ComponentPlacement.UNRELATED}
|
|
1949 |
* @see LayoutStyle
|
|
1950 |
*/
|
|
1951 |
public SequentialGroup addPreferredGap(ComponentPlacement type,
|
|
1952 |
int pref, int max) {
|
|
1953 |
if (type != ComponentPlacement.RELATED &&
|
|
1954 |
type != ComponentPlacement.UNRELATED) {
|
|
1955 |
throw new IllegalArgumentException(
|
|
1956 |
"Type must be one of " +
|
|
1957 |
"LayoutStyle.ComponentPlacement.RELATED or " +
|
|
1958 |
"LayoutStyle.ComponentPlacement.UNRELATED");
|
|
1959 |
}
|
|
1960 |
checkPreferredGapValues(pref, max);
|
|
1961 |
hasPreferredPaddingSprings = true;
|
|
1962 |
return (SequentialGroup)addSpring(new AutoPreferredGapSpring(
|
|
1963 |
type, pref, max));
|
|
1964 |
}
|
|
1965 |
|
|
1966 |
/**
|
|
1967 |
* Adds an element representing the preferred gap between an edge
|
|
1968 |
* the container and components that touch the border of the
|
|
1969 |
* container. This has no effect if the added gap does not
|
|
1970 |
* touch an edge of the parent container.
|
|
1971 |
* <p>
|
|
1972 |
* The element created to represent the gap is not
|
|
1973 |
* resizable.
|
|
1974 |
*
|
|
1975 |
* @return this {@code SequentialGroup}
|
|
1976 |
*/
|
|
1977 |
public SequentialGroup addContainerGap() {
|
|
1978 |
return addContainerGap(DEFAULT_SIZE, DEFAULT_SIZE);
|
|
1979 |
}
|
|
1980 |
|
|
1981 |
/**
|
|
1982 |
* Adds an element representing the preferred gap between one
|
|
1983 |
* edge of the container and the next or previous {@code
|
|
1984 |
* Component} with the specified size. This has no
|
|
1985 |
* effect if the next or previous element is not a {@code
|
|
1986 |
* Component} and does not touch one edge of the parent
|
|
1987 |
* container.
|
|
1988 |
*
|
|
1989 |
* @param pref the preferred size; one of {@code DEFAULT_SIZE} or a
|
|
1990 |
* value >= 0
|
|
1991 |
* @param max the maximum size; one of {@code DEFAULT_SIZE},
|
|
1992 |
* {@code PREFERRED_SIZE} or a value >= 0
|
|
1993 |
* @return this {@code SequentialGroup}
|
|
1994 |
*/
|
|
1995 |
public SequentialGroup addContainerGap(int pref, int max) {
|
|
1996 |
if ((pref < 0 && pref != DEFAULT_SIZE) ||
|
|
1997 |
(max < 0 && max != DEFAULT_SIZE && max != PREFERRED_SIZE)||
|
|
1998 |
(pref >= 0 && max >= 0 && pref > max)) {
|
|
1999 |
throw new IllegalArgumentException(
|
|
2000 |
"Pref and max must be either DEFAULT_VALUE " +
|
|
2001 |
"or >= 0 and pref <= max");
|
|
2002 |
}
|
|
2003 |
hasPreferredPaddingSprings = true;
|
|
2004 |
return (SequentialGroup)addSpring(
|
|
2005 |
new ContainerAutoPreferredGapSpring(pref, max));
|
|
2006 |
}
|
|
2007 |
|
|
2008 |
int operator(int a, int b) {
|
|
2009 |
return constrain(a) + constrain(b);
|
|
2010 |
}
|
|
2011 |
|
|
2012 |
void setValidSize(int axis, int origin, int size) {
|
|
2013 |
int pref = getPreferredSize(axis);
|
|
2014 |
if (size == pref) {
|
|
2015 |
// Layout at preferred size
|
|
2016 |
for (Spring spring : springs) {
|
|
2017 |
int springPref = spring.getPreferredSize(axis);
|
|
2018 |
spring.setSize(axis, origin, springPref);
|
|
2019 |
origin += springPref;
|
|
2020 |
}
|
|
2021 |
} else if (springs.size() == 1) {
|
|
2022 |
Spring spring = getSpring(0);
|
|
2023 |
spring.setSize(axis, origin, Math.min(
|
|
2024 |
Math.max(size, spring.getMinimumSize(axis)),
|
|
2025 |
spring.getMaximumSize(axis)));
|
|
2026 |
} else if (springs.size() > 1) {
|
|
2027 |
// Adjust between min/pref
|
|
2028 |
setValidSizeNotPreferred(axis, origin, size);
|
|
2029 |
}
|
|
2030 |
}
|
|
2031 |
|
|
2032 |
private void setValidSizeNotPreferred(int axis, int origin, int size) {
|
|
2033 |
int delta = size - getPreferredSize(axis);
|
|
2034 |
assert delta != 0;
|
|
2035 |
boolean useMin = (delta < 0);
|
|
2036 |
int springCount = springs.size();
|
|
2037 |
if (useMin) {
|
|
2038 |
delta *= -1;
|
|
2039 |
}
|
|
2040 |
|
|
2041 |
// The following algorithm if used for resizing springs:
|
|
2042 |
// 1. Calculate the resizability of each spring (pref - min or
|
|
2043 |
// max - pref) into a list.
|
|
2044 |
// 2. Sort the list in ascending order
|
|
2045 |
// 3. Iterate through each of the resizable Springs, attempting
|
|
2046 |
// to give them (pref - size) / resizeCount
|
|
2047 |
// 4. For any Springs that can not accomodate that much space
|
|
2048 |
// add the remainder back to the amount to distribute and
|
|
2049 |
// recalculate how must space the remaining springs will get.
|
|
2050 |
// 5. Set the size of the springs.
|
|
2051 |
|
|
2052 |
// First pass, sort the resizable springs into the List resizable
|
|
2053 |
List<SpringDelta> resizable = buildResizableList(axis, useMin);
|
|
2054 |
int resizableCount = resizable.size();
|
|
2055 |
|
|
2056 |
if (resizableCount > 0) {
|
|
2057 |
// How much we would like to give each Spring.
|
|
2058 |
int sDelta = delta / resizableCount;
|
|
2059 |
// Remaining space.
|
|
2060 |
int slop = delta - sDelta * resizableCount;
|
|
2061 |
int[] sizes = new int[springCount];
|
|
2062 |
int sign = useMin ? -1 : 1;
|
|
2063 |
// Second pass, accumulate the resulting deltas (relative to
|
|
2064 |
// preferred) into sizes.
|
|
2065 |
for (int counter = 0; counter < resizableCount; counter++) {
|
|
2066 |
SpringDelta springDelta = resizable.get(counter);
|
|
2067 |
if ((counter + 1) == resizableCount) {
|
|
2068 |
sDelta += slop;
|
|
2069 |
}
|
|
2070 |
springDelta.delta = Math.min(sDelta, springDelta.delta);
|
|
2071 |
delta -= springDelta.delta;
|
|
2072 |
if (springDelta.delta != sDelta && counter + 1 <
|
|
2073 |
resizableCount) {
|
|
2074 |
// Spring didn't take all the space, reset how much
|
|
2075 |
// each spring will get.
|
|
2076 |
sDelta = delta / (resizableCount - counter - 1);
|
|
2077 |
slop = delta - sDelta * (resizableCount - counter - 1);
|
|
2078 |
}
|
|
2079 |
sizes[springDelta.index] = sign * springDelta.delta;
|
|
2080 |
}
|
|
2081 |
|
|
2082 |
// And finally set the size of each spring
|
|
2083 |
for (int counter = 0; counter < springCount; counter++) {
|
|
2084 |
Spring spring = getSpring(counter);
|
|
2085 |
int sSize = spring.getPreferredSize(axis) + sizes[counter];
|
|
2086 |
spring.setSize(axis, origin, sSize);
|
|
2087 |
origin += sSize;
|
|
2088 |
}
|
|
2089 |
} else {
|
|
2090 |
// Nothing resizable, use the min or max of each of the
|
|
2091 |
// springs.
|
|
2092 |
for (int counter = 0; counter < springCount; counter++) {
|
|
2093 |
Spring spring = getSpring(counter);
|
|
2094 |
int sSize;
|
|
2095 |
if (useMin) {
|
|
2096 |
sSize = spring.getMinimumSize(axis);
|
|
2097 |
} else {
|
|
2098 |
sSize = spring.getMaximumSize(axis);
|
|
2099 |
}
|
|
2100 |
spring.setSize(axis, origin, sSize);
|
|
2101 |
origin += sSize;
|
|
2102 |
}
|
|
2103 |
}
|
|
2104 |
}
|
|
2105 |
|
|
2106 |
/**
|
|
2107 |
* Returns the sorted list of SpringDelta's for the current set of
|
|
2108 |
* Springs. The list is ordered based on the amount of flexibility of
|
|
2109 |
* the springs.
|
|
2110 |
*/
|
|
2111 |
private List<SpringDelta> buildResizableList(int axis,
|
|
2112 |
boolean useMin) {
|
|
2113 |
// First pass, figure out what is resizable
|
|
2114 |
int size = springs.size();
|
|
2115 |
List<SpringDelta> sorted = new ArrayList<SpringDelta>(size);
|
|
2116 |
for (int counter = 0; counter < size; counter++) {
|
|
2117 |
Spring spring = getSpring(counter);
|
|
2118 |
int sDelta;
|
|
2119 |
if (useMin) {
|
|
2120 |
sDelta = spring.getPreferredSize(axis) -
|
|
2121 |
spring.getMinimumSize(axis);
|
|
2122 |
} else {
|
|
2123 |
sDelta = spring.getMaximumSize(axis) -
|
|
2124 |
spring.getPreferredSize(axis);
|
|
2125 |
}
|
|
2126 |
if (sDelta > 0) {
|
|
2127 |
sorted.add(new SpringDelta(counter, sDelta));
|
|
2128 |
}
|
|
2129 |
}
|
|
2130 |
Collections.sort(sorted);
|
|
2131 |
return sorted;
|
|
2132 |
}
|
|
2133 |
|
|
2134 |
private int indexOfNextNonZeroSpring(
|
|
2135 |
int index, boolean treatAutopaddingAsZeroSized) {
|
|
2136 |
while (index < springs.size()) {
|
|
2137 |
Spring spring = springs.get(index);
|
|
2138 |
if (!spring.willHaveZeroSize(treatAutopaddingAsZeroSized)) {
|
|
2139 |
return index;
|
|
2140 |
}
|
|
2141 |
index++;
|
|
2142 |
}
|
|
2143 |
return index;
|
|
2144 |
}
|
|
2145 |
|
|
2146 |
@Override
|
|
2147 |
void insertAutopadding(int axis,
|
|
2148 |
List<AutoPreferredGapSpring> leadingPadding,
|
|
2149 |
List<AutoPreferredGapSpring> trailingPadding,
|
|
2150 |
List<ComponentSpring> leading, List<ComponentSpring> trailing,
|
|
2151 |
boolean insert) {
|
|
2152 |
List<AutoPreferredGapSpring> newLeadingPadding =
|
|
2153 |
new ArrayList<AutoPreferredGapSpring>(leadingPadding);
|
|
2154 |
List<AutoPreferredGapSpring> newTrailingPadding =
|
|
2155 |
new ArrayList<AutoPreferredGapSpring>(1);
|
|
2156 |
List<ComponentSpring> newLeading =
|
|
2157 |
new ArrayList<ComponentSpring>(leading);
|
|
2158 |
List<ComponentSpring> newTrailing = null;
|
|
2159 |
int counter = 0;
|
|
2160 |
// Warning, this must use springs.size, as it may change during the
|
|
2161 |
// loop.
|
|
2162 |
while (counter < springs.size()) {
|
|
2163 |
Spring spring = getSpring(counter);
|
|
2164 |
if (spring instanceof AutoPreferredGapSpring) {
|
|
2165 |
if (newLeadingPadding.size() == 0) {
|
|
2166 |
// Autopadding spring. Set the sources of the
|
|
2167 |
// autopadding spring based on newLeading.
|
|
2168 |
AutoPreferredGapSpring padding =
|
|
2169 |
(AutoPreferredGapSpring)spring;
|
|
2170 |
padding.setSources(newLeading);
|
|
2171 |
newLeading.clear();
|
|
2172 |
counter = indexOfNextNonZeroSpring(counter + 1, true);
|
|
2173 |
if (counter == springs.size()) {
|
|
2174 |
// Last spring in the list, add it to
|
|
2175 |
// trailingPadding.
|
|
2176 |
if (!(padding instanceof
|
|
2177 |
ContainerAutoPreferredGapSpring)) {
|
|
2178 |
trailingPadding.add(padding);
|
|
2179 |
}
|
|
2180 |
} else {
|
|
2181 |
newLeadingPadding.clear();
|
|
2182 |
newLeadingPadding.add(padding);
|
|
2183 |
}
|
|
2184 |
} else {
|
|
2185 |
counter = indexOfNextNonZeroSpring(counter + 1, true);
|
|
2186 |
}
|
|
2187 |
} else {
|
|
2188 |
// Not a padding spring
|
|
2189 |
if (newLeading.size() > 0 && insert) {
|
|
2190 |
// There's leading ComponentSprings, create an
|
|
2191 |
// autopadding spring.
|
|
2192 |
AutoPreferredGapSpring padding =
|
|
2193 |
new AutoPreferredGapSpring();
|
|
2194 |
// Force the newly created spring to be considered
|
|
2195 |
// by NOT incrementing counter
|
|
2196 |
springs.add(counter, padding);
|
|
2197 |
continue;
|
|
2198 |
}
|
|
2199 |
if (spring instanceof ComponentSpring) {
|
|
2200 |
// Spring is a Component, make it the target of any
|
|
2201 |
// leading AutopaddingSpring.
|
|
2202 |
ComponentSpring cSpring = (ComponentSpring)spring;
|
|
2203 |
if (!cSpring.isVisible()) {
|
|
2204 |
counter++;
|
|
2205 |
continue;
|
|
2206 |
}
|
|
2207 |
for (AutoPreferredGapSpring gapSpring : newLeadingPadding) {
|
|
2208 |
gapSpring.addTarget(cSpring, axis);
|
|
2209 |
}
|
|
2210 |
newLeading.clear();
|
|
2211 |
newLeadingPadding.clear();
|
|
2212 |
counter = indexOfNextNonZeroSpring(counter + 1, false);
|
|
2213 |
if (counter == springs.size()) {
|
|
2214 |
// Last Spring, add it to trailing
|
|
2215 |
trailing.add(cSpring);
|
|
2216 |
} else {
|
|
2217 |
// Not that last Spring, add it to leading
|
|
2218 |
newLeading.add(cSpring);
|
|
2219 |
}
|
|
2220 |
} else if (spring instanceof Group) {
|
|
2221 |
// Forward call to child Group
|
|
2222 |
if (newTrailing == null) {
|
|
2223 |
newTrailing = new ArrayList<ComponentSpring>(1);
|
|
2224 |
} else {
|
|
2225 |
newTrailing.clear();
|
|
2226 |
}
|
|
2227 |
newTrailingPadding.clear();
|
|
2228 |
((Group)spring).insertAutopadding(axis,
|
|
2229 |
newLeadingPadding, newTrailingPadding,
|
|
2230 |
newLeading, newTrailing, insert);
|
|
2231 |
newLeading.clear();
|
|
2232 |
newLeadingPadding.clear();
|
|
2233 |
counter = indexOfNextNonZeroSpring(
|
|
2234 |
counter + 1, (newTrailing.size() == 0));
|
|
2235 |
if (counter == springs.size()) {
|
|
2236 |
trailing.addAll(newTrailing);
|
|
2237 |
trailingPadding.addAll(newTrailingPadding);
|
|
2238 |
} else {
|
|
2239 |
newLeading.addAll(newTrailing);
|
|
2240 |
newLeadingPadding.addAll(newTrailingPadding);
|
|
2241 |
}
|
|
2242 |
} else {
|
|
2243 |
// Gap
|
|
2244 |
newLeadingPadding.clear();
|
|
2245 |
newLeading.clear();
|
|
2246 |
counter++;
|
|
2247 |
}
|
|
2248 |
}
|
|
2249 |
}
|
|
2250 |
}
|
|
2251 |
|
|
2252 |
int getBaseline() {
|
|
2253 |
if (baselineSpring != null) {
|
|
2254 |
int baseline = baselineSpring.getBaseline();
|
|
2255 |
if (baseline >= 0) {
|
|
2256 |
int size = 0;
|
|
2257 |
for (Spring spring : springs) {
|
|
2258 |
if (spring == baselineSpring) {
|
|
2259 |
return size + baseline;
|
|
2260 |
} else {
|
|
2261 |
size += spring.getPreferredSize(VERTICAL);
|
|
2262 |
}
|
|
2263 |
}
|
|
2264 |
}
|
|
2265 |
}
|
|
2266 |
return -1;
|
|
2267 |
}
|
|
2268 |
|
|
2269 |
BaselineResizeBehavior getBaselineResizeBehavior() {
|
|
2270 |
if (isResizable(VERTICAL)) {
|
|
2271 |
if (!baselineSpring.isResizable(VERTICAL)) {
|
|
2272 |
// Spring to use for baseline isn't resizable. In this case
|
|
2273 |
// baseline resize behavior can be determined based on how
|
|
2274 |
// preceeding springs resize.
|
|
2275 |
boolean leadingResizable = false;
|
|
2276 |
for (Spring spring : springs) {
|
|
2277 |
if (spring == baselineSpring) {
|
|
2278 |
break;
|
|
2279 |
} else if (spring.isResizable(VERTICAL)) {
|
|
2280 |
leadingResizable = true;
|
|
2281 |
break;
|
|
2282 |
}
|
|
2283 |
}
|
|
2284 |
boolean trailingResizable = false;
|
|
2285 |
for (int i = springs.size() - 1; i >= 0; i--) {
|
|
2286 |
Spring spring = springs.get(i);
|
|
2287 |
if (spring == baselineSpring) {
|
|
2288 |
break;
|
|
2289 |
}
|
|
2290 |
if (spring.isResizable(VERTICAL)) {
|
|
2291 |
trailingResizable = true;
|
|
2292 |
break;
|
|
2293 |
}
|
|
2294 |
}
|
|
2295 |
if (leadingResizable && !trailingResizable) {
|
|
2296 |
return BaselineResizeBehavior.CONSTANT_DESCENT;
|
|
2297 |
} else if (!leadingResizable && trailingResizable) {
|
|
2298 |
return BaselineResizeBehavior.CONSTANT_ASCENT;
|
|
2299 |
}
|
|
2300 |
// If we get here, both leading and trailing springs are
|
|
2301 |
// resizable. Fall through to OTHER.
|
|
2302 |
} else {
|
|
2303 |
BaselineResizeBehavior brb = baselineSpring.getBaselineResizeBehavior();
|
|
2304 |
if (brb == BaselineResizeBehavior.CONSTANT_ASCENT) {
|
|
2305 |
for (Spring spring : springs) {
|
|
2306 |
if (spring == baselineSpring) {
|
|
2307 |
return BaselineResizeBehavior.CONSTANT_ASCENT;
|
|
2308 |
}
|
|
2309 |
if (spring.isResizable(VERTICAL)) {
|
|
2310 |
return BaselineResizeBehavior.OTHER;
|
|
2311 |
}
|
|
2312 |
}
|
|
2313 |
} else if (brb == BaselineResizeBehavior.CONSTANT_DESCENT) {
|
|
2314 |
for (int i = springs.size() - 1; i >= 0; i--) {
|
|
2315 |
Spring spring = springs.get(i);
|
|
2316 |
if (spring == baselineSpring) {
|
|
2317 |
return BaselineResizeBehavior.CONSTANT_DESCENT;
|
|
2318 |
}
|
|
2319 |
if (spring.isResizable(VERTICAL)) {
|
|
2320 |
return BaselineResizeBehavior.OTHER;
|
|
2321 |
}
|
|
2322 |
}
|
|
2323 |
}
|
|
2324 |
}
|
|
2325 |
return BaselineResizeBehavior.OTHER;
|
|
2326 |
}
|
|
2327 |
// Not resizable, treat as constant_ascent
|
|
2328 |
return BaselineResizeBehavior.CONSTANT_ASCENT;
|
|
2329 |
}
|
|
2330 |
|
|
2331 |
private void checkPreferredGapValues(int pref, int max) {
|
|
2332 |
if ((pref < 0 && pref != DEFAULT_SIZE && pref != PREFERRED_SIZE) ||
|
|
2333 |
(max < 0 && max != DEFAULT_SIZE && max != PREFERRED_SIZE)||
|
|
2334 |
(pref >= 0 && max >= 0 && pref > max)) {
|
|
2335 |
throw new IllegalArgumentException(
|
|
2336 |
"Pref and max must be either DEFAULT_SIZE, " +
|
|
2337 |
"PREFERRED_SIZE, or >= 0 and pref <= max");
|
|
2338 |
}
|
|
2339 |
}
|
|
2340 |
}
|
|
2341 |
|
|
2342 |
|
|
2343 |
/**
|
|
2344 |
* Used by SequentialGroup in calculating resizability of springs.
|
|
2345 |
*/
|
|
2346 |
private static final class SpringDelta implements Comparable<SpringDelta> {
|
|
2347 |
// Original index.
|
|
2348 |
public final int index;
|
|
2349 |
// Delta, one of pref - min or max - pref.
|
|
2350 |
public int delta;
|
|
2351 |
|
|
2352 |
public SpringDelta(int index, int delta) {
|
|
2353 |
this.index = index;
|
|
2354 |
this.delta = delta;
|
|
2355 |
}
|
|
2356 |
|
|
2357 |
public int compareTo(SpringDelta o) {
|
|
2358 |
return delta - o.delta;
|
|
2359 |
}
|
|
2360 |
|
|
2361 |
public String toString() {
|
|
2362 |
return super.toString() + "[index=" + index + ", delta=" +
|
|
2363 |
delta + "]";
|
|
2364 |
}
|
|
2365 |
}
|
|
2366 |
|
|
2367 |
|
|
2368 |
/**
|
|
2369 |
* A {@code Group} that aligns and sizes it's children.
|
|
2370 |
* {@code ParallelGroup} aligns it's children in
|
|
2371 |
* four possible ways: along the baseline, centered, anchored to the
|
|
2372 |
* leading edge, or anchored to the trailing edge.
|
|
2373 |
* <h3>Baseline</h3>
|
|
2374 |
* A {@code ParallelGroup} that aligns it's children along the
|
|
2375 |
* baseline must first decide where the baseline is
|
|
2376 |
* anchored. The baseline can either be anchored to the top, or
|
|
2377 |
* anchored to the bottom of the group. That is, the distance between the
|
|
2378 |
* baseline and the beginning of the group can be a constant
|
|
2379 |
* distance, or the distance between the end of the group and the
|
|
2380 |
* baseline can be a constant distance. The possible choices
|
|
2381 |
* correspond to the {@code BaselineResizeBehavior} constants
|
|
2382 |
* {@link
|
|
2383 |
* java.awt.Component.BaselineResizeBehavior#CONSTANT_ASCENT CONSTANT_ASCENT} and
|
|
2384 |
* {@link
|
|
2385 |
* java.awt.Component.BaselineResizeBehavior#CONSTANT_DESCENT CONSTANT_DESCENT}.
|
|
2386 |
* <p>
|
|
2387 |
* The baseline anchor may be explicitly specified by the
|
|
2388 |
* {@code createBaselineGroup} method, or determined based on the elements.
|
|
2389 |
* If not explicitly specified, the baseline will be anchored to
|
|
2390 |
* the bottom if all the elements with a baseline, and that are
|
|
2391 |
* aligned to the baseline, have a baseline resize behavior of
|
|
2392 |
* {@code CONSTANT_DESCENT}; otherwise the baseline is anchored to the top
|
|
2393 |
* of the group.
|
|
2394 |
* <p>
|
|
2395 |
* Elements aligned to the baseline are resizable if they have have
|
|
2396 |
* a baseline resize behavior of {@code CONSTANT_ASCENT} or
|
|
2397 |
* {@code CONSTANT_DESCENT}. Elements with a baseline resize
|
|
2398 |
* behavior of {@code OTHER} or {@code CENTER_OFFSET} are not resizable.
|
|
2399 |
* <p>
|
|
2400 |
* The baseline is calculated based on the preferred height of each
|
|
2401 |
* of the elements that have a baseline. The baseline is
|
|
2402 |
* calculated using the following algorithm:
|
|
2403 |
* {@code max(maxNonBaselineHeight, maxAscent + maxDescent)}, where the
|
|
2404 |
* {@code maxNonBaselineHeight} is the maximum height of all elements
|
|
2405 |
* that do not have a baseline, or are not aligned along the baseline.
|
|
2406 |
* {@code maxAscent} is the maximum ascent (baseline) of all elements that
|
|
2407 |
* have a baseline and are aligned along the baseline.
|
|
2408 |
* {@code maxDescent} is the maximum descent (preferred height - baseline)
|
|
2409 |
* of all elements that have a baseline and are aligned along the baseline.
|
|
2410 |
* <p>
|
|
2411 |
* A {@code ParallelGroup} that aligns it's elements along the baseline
|
|
2412 |
* is only useful along the vertical axis. If you create a
|
|
2413 |
* baseline group and use it along the horizontal axis an
|
|
2414 |
* {@code IllegalStateException} is thrown when you ask
|
|
2415 |
* {@code GroupLayout} for the minimum, preferred or maximum size or
|
|
2416 |
* attempt to layout the components.
|
|
2417 |
* <p>
|
|
2418 |
* Elements that are not aligned to the baseline and smaller than the size
|
|
2419 |
* of the {@code ParallelGroup} are positioned in one of three
|
|
2420 |
* ways: centered, anchored to the leading edge, or anchored to the
|
|
2421 |
* trailing edge.
|
|
2422 |
*
|
|
2423 |
* <h3>Non-baseline {@code ParallelGroup}</h3>
|
|
2424 |
* {@code ParallelGroup}s created with an alignment other than
|
|
2425 |
* {@code BASELINE} align elements that are smaller than the size
|
|
2426 |
* of the group in one of three ways: centered, anchored to the
|
|
2427 |
* leading edge, or anchored to the trailing edge.
|
|
2428 |
* <p>
|
|
2429 |
* The leading edge is based on the axis and {@code
|
|
2430 |
* ComponentOrientation}. For the vertical axis the top edge is
|
|
2431 |
* always the leading edge, and the bottom edge is always the
|
|
2432 |
* trailing edge. When the {@code ComponentOrientation} is {@code
|
|
2433 |
* LEFT_TO_RIGHT}, the leading edge is the left edge and the
|
|
2434 |
* trailing edge the right edge. A {@code ComponentOrientation} of
|
|
2435 |
* {@code RIGHT_TO_LEFT} flips the left and right edges. Child
|
|
2436 |
* elements are aligned based on the specified alignment the
|
|
2437 |
* element was added with. If you do not specify an alignment, the
|
|
2438 |
* alignment specified for the {@code ParallelGroup} is used.
|
|
2439 |
* <p>
|
|
2440 |
* To align elements along the baseline you {@code createBaselineGroup},
|
|
2441 |
* or {@code createParallelGroup} with an alignment of {@code BASELINE}.
|
|
2442 |
* If the group was not created with a baseline alignment, and you attempt
|
|
2443 |
* to add an element specifying a baseline alignment, an
|
|
2444 |
* {@code IllegalArgumentException} is thrown.
|
|
2445 |
*
|
|
2446 |
* @see #createParallelGroup()
|
|
2447 |
* @see #createBaselineGroup(boolean,boolean)
|
|
2448 |
* @since 1.6
|
|
2449 |
*/
|
|
2450 |
public class ParallelGroup extends Group {
|
|
2451 |
// How children are layed out.
|
|
2452 |
private final Alignment childAlignment;
|
|
2453 |
// Whether or not we're resizable.
|
|
2454 |
private final boolean resizable;
|
|
2455 |
|
|
2456 |
ParallelGroup(Alignment childAlignment, boolean resizable) {
|
|
2457 |
this.childAlignment = childAlignment;
|
|
2458 |
this.resizable = resizable;
|
|
2459 |
}
|
|
2460 |
|
|
2461 |
/**
|
|
2462 |
* {@inheritDoc}
|
|
2463 |
*/
|
|
2464 |
public ParallelGroup addGroup(Group group) {
|
|
2465 |
return (ParallelGroup)super.addGroup(group);
|
|
2466 |
}
|
|
2467 |
|
|
2468 |
/**
|
|
2469 |
* {@inheritDoc}
|
|
2470 |
*/
|
|
2471 |
public ParallelGroup addComponent(Component component) {
|
|
2472 |
return (ParallelGroup)super.addComponent(component);
|
|
2473 |
}
|
|
2474 |
|
|
2475 |
/**
|
|
2476 |
* {@inheritDoc}
|
|
2477 |
*/
|
|
2478 |
public ParallelGroup addComponent(Component component, int min, int pref,
|
|
2479 |
int max) {
|
|
2480 |
return (ParallelGroup)super.addComponent(component, min, pref, max);
|
|
2481 |
}
|
|
2482 |
|
|
2483 |
/**
|
|
2484 |
* {@inheritDoc}
|
|
2485 |
*/
|
|
2486 |
public ParallelGroup addGap(int pref) {
|
|
2487 |
return (ParallelGroup)super.addGap(pref);
|
|
2488 |
}
|
|
2489 |
|
|
2490 |
/**
|
|
2491 |
* {@inheritDoc}
|
|
2492 |
*/
|
|
2493 |
public ParallelGroup addGap(int min, int pref, int max) {
|
|
2494 |
return (ParallelGroup)super.addGap(min, pref, max);
|
|
2495 |
}
|
|
2496 |
|
|
2497 |
/**
|
|
2498 |
* Adds a {@code Group} to this {@code ParallelGroup} with the
|
|
2499 |
* specified alignment. If the child is smaller than the
|
|
2500 |
* {@code Group} it is aligned based on the specified
|
|
2501 |
* alignment.
|
|
2502 |
*
|
|
2503 |
* @param alignment the alignment
|
|
2504 |
* @param group the {@code Group} to add
|
|
2505 |
* @return this {@code ParallelGroup}
|
|
2506 |
* @throws IllegalArgumentException if {@code alignment} is
|
|
2507 |
* {@code null}
|
|
2508 |
*/
|
|
2509 |
public ParallelGroup addGroup(Alignment alignment, Group group) {
|
|
2510 |
checkChildAlignment(alignment);
|
|
2511 |
group.setAlignment(alignment);
|
|
2512 |
return (ParallelGroup)addSpring(group);
|
|
2513 |
}
|
|
2514 |
|
|
2515 |
/**
|
|
2516 |
* Adds a {@code Component} to this {@code ParallelGroup} with
|
|
2517 |
* the specified alignment.
|
|
2518 |
*
|
|
2519 |
* @param alignment the alignment
|
|
2520 |
* @param component the {@code Component} to add
|
|
2521 |
* @return this {@code Group}
|
|
2522 |
* @throws IllegalArgumentException if {@code alignment} is
|
|
2523 |
* {@code null}
|
|
2524 |
*/
|
|
2525 |
public ParallelGroup addComponent(Component component,
|
|
2526 |
Alignment alignment) {
|
|
2527 |
return addComponent(component, alignment, DEFAULT_SIZE, DEFAULT_SIZE,
|
|
2528 |
DEFAULT_SIZE);
|
|
2529 |
}
|
|
2530 |
|
|
2531 |
/**
|
|
2532 |
* Adds a {@code Component} to this {@code ParallelGroup} with the
|
|
2533 |
* specified alignment and size.
|
|
2534 |
*
|
|
2535 |
* @param alignment the alignment
|
|
2536 |
* @param component the {@code Component} to add
|
|
2537 |
* @param min the minimum size
|
|
2538 |
* @param pref the preferred size
|
|
2539 |
* @param max the maximum size
|
|
2540 |
* @throws IllegalArgumentException if {@code alignment} is
|
|
2541 |
* {@code null}
|
|
2542 |
* @return this {@code Group}
|
|
2543 |
*/
|
|
2544 |
public ParallelGroup addComponent(Component component,
|
|
2545 |
Alignment alignment, int min, int pref, int max) {
|
|
2546 |
checkChildAlignment(alignment);
|
|
2547 |
ComponentSpring spring = new ComponentSpring(component,
|
|
2548 |
min, pref, max);
|
|
2549 |
spring.setAlignment(alignment);
|
|
2550 |
return (ParallelGroup)addSpring(spring);
|
|
2551 |
}
|
|
2552 |
|
|
2553 |
boolean isResizable() {
|
|
2554 |
return resizable;
|
|
2555 |
}
|
|
2556 |
|
|
2557 |
int operator(int a, int b) {
|
|
2558 |
return Math.max(a, b);
|
|
2559 |
}
|
|
2560 |
|
|
2561 |
int calculateMinimumSize(int axis) {
|
|
2562 |
if (!isResizable()) {
|
|
2563 |
return getPreferredSize(axis);
|
|
2564 |
}
|
|
2565 |
return super.calculateMinimumSize(axis);
|
|
2566 |
}
|
|
2567 |
|
|
2568 |
int calculateMaximumSize(int axis) {
|
|
2569 |
if (!isResizable()) {
|
|
2570 |
return getPreferredSize(axis);
|
|
2571 |
}
|
|
2572 |
return super.calculateMaximumSize(axis);
|
|
2573 |
}
|
|
2574 |
|
|
2575 |
void setValidSize(int axis, int origin, int size) {
|
|
2576 |
for (Spring spring : springs) {
|
|
2577 |
setChildSize(spring, axis, origin, size);
|
|
2578 |
}
|
|
2579 |
}
|
|
2580 |
|
|
2581 |
void setChildSize(Spring spring, int axis, int origin, int size) {
|
|
2582 |
Alignment alignment = spring.getAlignment();
|
|
2583 |
int springSize = Math.min(
|
|
2584 |
Math.max(spring.getMinimumSize(axis), size),
|
|
2585 |
spring.getMaximumSize(axis));
|
|
2586 |
if (alignment == null) {
|
|
2587 |
alignment = childAlignment;
|
|
2588 |
}
|
|
2589 |
switch (alignment) {
|
|
2590 |
case TRAILING:
|
|
2591 |
spring.setSize(axis, origin + size - springSize,
|
|
2592 |
springSize);
|
|
2593 |
break;
|
|
2594 |
case CENTER:
|
|
2595 |
spring.setSize(axis, origin +
|
|
2596 |
(size - springSize) / 2,springSize);
|
|
2597 |
break;
|
|
2598 |
default: // LEADING, or BASELINE
|
|
2599 |
spring.setSize(axis, origin, springSize);
|
|
2600 |
break;
|
|
2601 |
}
|
|
2602 |
}
|
|
2603 |
|
|
2604 |
@Override
|
|
2605 |
void insertAutopadding(int axis,
|
|
2606 |
List<AutoPreferredGapSpring> leadingPadding,
|
|
2607 |
List<AutoPreferredGapSpring> trailingPadding,
|
|
2608 |
List<ComponentSpring> leading, List<ComponentSpring> trailing,
|
|
2609 |
boolean insert) {
|
|
2610 |
for (Spring spring : springs) {
|
|
2611 |
if (spring instanceof ComponentSpring) {
|
|
2612 |
if (((ComponentSpring)spring).isVisible()) {
|
|
2613 |
for (AutoPreferredGapSpring gapSpring :
|
|
2614 |
leadingPadding) {
|
|
2615 |
gapSpring.addTarget((ComponentSpring)spring, axis);
|
|
2616 |
}
|
|
2617 |
trailing.add((ComponentSpring)spring);
|
|
2618 |
}
|
|
2619 |
} else if (spring instanceof Group) {
|
|
2620 |
((Group)spring).insertAutopadding(axis, leadingPadding,
|
|
2621 |
trailingPadding, leading, trailing, insert);
|
|
2622 |
} else if (spring instanceof AutoPreferredGapSpring) {
|
|
2623 |
((AutoPreferredGapSpring)spring).setSources(leading);
|
|
2624 |
trailingPadding.add((AutoPreferredGapSpring)spring);
|
|
2625 |
}
|
|
2626 |
}
|
|
2627 |
}
|
|
2628 |
|
|
2629 |
private void checkChildAlignment(Alignment alignment) {
|
|
2630 |
checkChildAlignment(alignment, (this instanceof BaselineGroup));
|
|
2631 |
}
|
|
2632 |
|
|
2633 |
private void checkChildAlignment(Alignment alignment,
|
|
2634 |
boolean allowsBaseline) {
|
|
2635 |
if (alignment == null) {
|
|
2636 |
throw new IllegalArgumentException("Alignment must be non-null");
|
|
2637 |
}
|
|
2638 |
if (!allowsBaseline && alignment == Alignment.BASELINE) {
|
|
2639 |
throw new IllegalArgumentException("Alignment must be one of:" +
|
|
2640 |
"LEADING, TRAILING or CENTER");
|
|
2641 |
}
|
|
2642 |
}
|
|
2643 |
}
|
|
2644 |
|
|
2645 |
|
|
2646 |
/**
|
|
2647 |
* An extension of {@code ParallelGroup} that aligns its
|
|
2648 |
* constituent {@code Spring}s along the baseline.
|
|
2649 |
*/
|
|
2650 |
private class BaselineGroup extends ParallelGroup {
|
|
2651 |
// Whether or not all child springs have a baseline
|
|
2652 |
private boolean allSpringsHaveBaseline;
|
|
2653 |
|
|
2654 |
// max(spring.getBaseline()) of all springs aligned along the baseline
|
|
2655 |
// that have a baseline
|
|
2656 |
private int prefAscent;
|
|
2657 |
|
|
2658 |
// max(spring.getPreferredSize().height - spring.getBaseline()) of all
|
|
2659 |
// springs aligned along the baseline that have a baseline
|
|
2660 |
private int prefDescent;
|
|
2661 |
|
|
2662 |
// Whether baselineAnchoredToTop was explicitly set
|
|
2663 |
private boolean baselineAnchorSet;
|
|
2664 |
|
|
2665 |
// Whether the baseline is anchored to the top or the bottom.
|
|
2666 |
// If anchored to the top the baseline is always at prefAscent,
|
|
2667 |
// otherwise the baseline is at (height - prefDescent)
|
|
2668 |
private boolean baselineAnchoredToTop;
|
|
2669 |
|
|
2670 |
// Whether or not the baseline has been calculated.
|
|
2671 |
private boolean calcedBaseline;
|
|
2672 |
|
|
2673 |
BaselineGroup(boolean resizable) {
|
|
2674 |
super(Alignment.LEADING, resizable);
|
|
2675 |
prefAscent = prefDescent = -1;
|
|
2676 |
calcedBaseline = false;
|
|
2677 |
}
|
|
2678 |
|
|
2679 |
BaselineGroup(boolean resizable, boolean baselineAnchoredToTop) {
|
|
2680 |
this(resizable);
|
|
2681 |
this.baselineAnchoredToTop = baselineAnchoredToTop;
|
|
2682 |
baselineAnchorSet = true;
|
|
2683 |
}
|
|
2684 |
|
|
2685 |
void unset() {
|
|
2686 |
super.unset();
|
|
2687 |
prefAscent = prefDescent = -1;
|
|
2688 |
calcedBaseline = false;
|
|
2689 |
}
|
|
2690 |
|
|
2691 |
void setValidSize(int axis, int origin, int size) {
|
|
2692 |
checkAxis(axis);
|
|
2693 |
if (prefAscent == -1) {
|
|
2694 |
super.setValidSize(axis, origin, size);
|
|
2695 |
} else {
|
|
2696 |
// do baseline layout
|
|
2697 |
baselineLayout(origin, size);
|
|
2698 |
}
|
|
2699 |
}
|
|
2700 |
|
|
2701 |
int calculateSize(int axis, int type) {
|
|
2702 |
checkAxis(axis);
|
|
2703 |
if (!calcedBaseline) {
|
|
2704 |
calculateBaselineAndResizeBehavior();
|
|
2705 |
}
|
|
2706 |
if (type == MIN_SIZE) {
|
|
2707 |
return calculateMinSize();
|
|
2708 |
}
|
|
2709 |
if (type == MAX_SIZE) {
|
|
2710 |
return calculateMaxSize();
|
|
2711 |
}
|
|
2712 |
if (allSpringsHaveBaseline) {
|
|
2713 |
return prefAscent + prefDescent;
|
|
2714 |
}
|
|
2715 |
return Math.max(prefAscent + prefDescent,
|
|
2716 |
super.calculateSize(axis, type));
|
|
2717 |
}
|
|
2718 |
|
|
2719 |
private void calculateBaselineAndResizeBehavior() {
|
|
2720 |
// calculate baseline
|
|
2721 |
prefAscent = 0;
|
|
2722 |
prefDescent = 0;
|
|
2723 |
int baselineSpringCount = 0;
|
|
2724 |
BaselineResizeBehavior resizeBehavior = null;
|
|
2725 |
for (Spring spring : springs) {
|
|
2726 |
if (spring.getAlignment() == null ||
|
|
2727 |
spring.getAlignment() == Alignment.BASELINE) {
|
|
2728 |
int baseline = spring.getBaseline();
|
|
2729 |
if (baseline >= 0) {
|
|
2730 |
if (spring.isResizable(VERTICAL)) {
|
|
2731 |
BaselineResizeBehavior brb = spring.
|
|
2732 |
getBaselineResizeBehavior();
|
|
2733 |
if (resizeBehavior == null) {
|
|
2734 |
resizeBehavior = brb;
|
|
2735 |
} else if (brb != resizeBehavior) {
|
|
2736 |
resizeBehavior = BaselineResizeBehavior.
|
|
2737 |
CONSTANT_ASCENT;
|
|
2738 |
}
|
|
2739 |
}
|
|
2740 |
prefAscent = Math.max(prefAscent, baseline);
|
|
2741 |
prefDescent = Math.max(prefDescent, spring.
|
|
2742 |
getPreferredSize(VERTICAL) - baseline);
|
|
2743 |
baselineSpringCount++;
|
|
2744 |
}
|
|
2745 |
}
|
|
2746 |
}
|
|
2747 |
if (!baselineAnchorSet) {
|
|
2748 |
if (resizeBehavior == BaselineResizeBehavior.CONSTANT_DESCENT){
|
|
2749 |
this.baselineAnchoredToTop = false;
|
|
2750 |
} else {
|
|
2751 |
this.baselineAnchoredToTop = true;
|
|
2752 |
}
|
|
2753 |
}
|
|
2754 |
allSpringsHaveBaseline = (baselineSpringCount == springs.size());
|
|
2755 |
calcedBaseline = true;
|
|
2756 |
}
|
|
2757 |
|
|
2758 |
private int calculateMaxSize() {
|
|
2759 |
int maxAscent = prefAscent;
|
|
2760 |
int maxDescent = prefDescent;
|
|
2761 |
int nonBaselineMax = 0;
|
|
2762 |
for (Spring spring : springs) {
|
|
2763 |
int baseline;
|
|
2764 |
int springMax = spring.getMaximumSize(VERTICAL);
|
|
2765 |
if ((spring.getAlignment() == null ||
|
|
2766 |
spring.getAlignment() == Alignment.BASELINE) &&
|
|
2767 |
(baseline = spring.getBaseline()) >= 0) {
|
|
2768 |
int springPref = spring.getPreferredSize(VERTICAL);
|
|
2769 |
if (springPref != springMax) {
|
|
2770 |
switch (spring.getBaselineResizeBehavior()) {
|
|
2771 |
case CONSTANT_ASCENT:
|
|
2772 |
if (baselineAnchoredToTop) {
|
|
2773 |
maxDescent = Math.max(maxDescent,
|
|
2774 |
springMax - baseline);
|
|
2775 |
}
|
|
2776 |
break;
|
|
2777 |
case CONSTANT_DESCENT:
|
|
2778 |
if (!baselineAnchoredToTop) {
|
|
2779 |
maxAscent = Math.max(maxAscent,
|
|
2780 |
springMax - springPref + baseline);
|
|
2781 |
}
|
|
2782 |
break;
|
|
2783 |
default: // CENTER_OFFSET and OTHER, not resizable
|
|
2784 |
break;
|
|
2785 |
}
|
|
2786 |
}
|
|
2787 |
} else {
|
|
2788 |
// Not aligned along the baseline, or no baseline.
|
|
2789 |
nonBaselineMax = Math.max(nonBaselineMax, springMax);
|
|
2790 |
}
|
|
2791 |
}
|
|
2792 |
return Math.max(nonBaselineMax, maxAscent + maxDescent);
|
|
2793 |
}
|
|
2794 |
|
|
2795 |
private int calculateMinSize() {
|
|
2796 |
int minAscent = 0;
|
|
2797 |
int minDescent = 0;
|
|
2798 |
int nonBaselineMin = 0;
|
|
2799 |
if (baselineAnchoredToTop) {
|
|
2800 |
minAscent = prefAscent;
|
|
2801 |
} else {
|
|
2802 |
minDescent = prefDescent;
|
|
2803 |
}
|
|
2804 |
for (Spring spring : springs) {
|
|
2805 |
int springMin = spring.getMinimumSize(VERTICAL);
|
|
2806 |
int baseline;
|
|
2807 |
if ((spring.getAlignment() == null ||
|
|
2808 |
spring.getAlignment() == Alignment.BASELINE) &&
|
|
2809 |
(baseline = spring.getBaseline()) >= 0) {
|
|
2810 |
int springPref = spring.getPreferredSize(VERTICAL);
|
|
2811 |
BaselineResizeBehavior brb = spring.
|
|
2812 |
getBaselineResizeBehavior();
|
|
2813 |
switch (brb) {
|
|
2814 |
case CONSTANT_ASCENT:
|
|
2815 |
if (baselineAnchoredToTop) {
|
|
2816 |
minDescent = Math.max(springMin - baseline,
|
|
2817 |
minDescent);
|
|
2818 |
} else {
|
|
2819 |
minAscent = Math.max(baseline, minAscent);
|
|
2820 |
}
|
|
2821 |
break;
|
|
2822 |
case CONSTANT_DESCENT:
|
|
2823 |
if (!baselineAnchoredToTop) {
|
|
2824 |
minAscent = Math.max(
|
|
2825 |
baseline - (springPref - springMin),
|
|
2826 |
minAscent);
|
|
2827 |
} else {
|
|
2828 |
minDescent = Math.max(springPref - baseline,
|
|
2829 |
minDescent);
|
|
2830 |
}
|
|
2831 |
break;
|
|
2832 |
default:
|
|
2833 |
// CENTER_OFFSET and OTHER are !resizable, use
|
|
2834 |
// the preferred size.
|
|
2835 |
minAscent = Math.max(baseline, minAscent);
|
|
2836 |
minDescent = Math.max(springPref - baseline,
|
|
2837 |
minDescent);
|
|
2838 |
break;
|
|
2839 |
}
|
|
2840 |
} else {
|
|
2841 |
// Not aligned along the baseline, or no baseline.
|
|
2842 |
nonBaselineMin = Math.max(nonBaselineMin, springMin);
|
|
2843 |
}
|
|
2844 |
}
|
|
2845 |
return Math.max(nonBaselineMin, minAscent + minDescent);
|
|
2846 |
}
|
|
2847 |
|
|
2848 |
/**
|
|
2849 |
* Lays out springs that have a baseline along the baseline. All
|
|
2850 |
* others are centered.
|
|
2851 |
*/
|
|
2852 |
private void baselineLayout(int origin, int size) {
|
|
2853 |
int ascent;
|
|
2854 |
int descent;
|
|
2855 |
if (baselineAnchoredToTop) {
|
|
2856 |
ascent = prefAscent;
|
|
2857 |
descent = size - ascent;
|
|
2858 |
} else {
|
|
2859 |
ascent = size - prefDescent;
|
|
2860 |
descent = prefDescent;
|
|
2861 |
}
|
|
2862 |
for (Spring spring : springs) {
|
|
2863 |
Alignment alignment = spring.getAlignment();
|
|
2864 |
if (alignment == null || alignment == Alignment.BASELINE) {
|
|
2865 |
int baseline = spring.getBaseline();
|
|
2866 |
if (baseline >= 0) {
|
|
2867 |
int springMax = spring.getMaximumSize(VERTICAL);
|
|
2868 |
int springPref = spring.getPreferredSize(VERTICAL);
|
|
2869 |
int height = springPref;
|
|
2870 |
int y;
|
|
2871 |
switch(spring.getBaselineResizeBehavior()) {
|
|
2872 |
case CONSTANT_ASCENT:
|
|
2873 |
y = origin + ascent - baseline;
|
|
2874 |
height = Math.min(descent, springMax -
|
|
2875 |
baseline) + baseline;
|
|
2876 |
break;
|
|
2877 |
case CONSTANT_DESCENT:
|
|
2878 |
height = Math.min(ascent, springMax -
|
|
2879 |
springPref + baseline) +
|
|
2880 |
(springPref - baseline);
|
|
2881 |
y = origin + ascent +
|
|
2882 |
(springPref - baseline) - height;
|
|
2883 |
break;
|
|
2884 |
default: // CENTER_OFFSET & OTHER, not resizable
|
|
2885 |
y = origin + ascent - baseline;
|
|
2886 |
break;
|
|
2887 |
}
|
|
2888 |
spring.setSize(VERTICAL, y, height);
|
|
2889 |
} else {
|
|
2890 |
setChildSize(spring, VERTICAL, origin, size);
|
|
2891 |
}
|
|
2892 |
} else {
|
|
2893 |
setChildSize(spring, VERTICAL, origin, size);
|
|
2894 |
}
|
|
2895 |
}
|
|
2896 |
}
|
|
2897 |
|
|
2898 |
int getBaseline() {
|
|
2899 |
if (springs.size() > 1) {
|
|
2900 |
// Force the baseline to be calculated
|
|
2901 |
getPreferredSize(VERTICAL);
|
|
2902 |
return prefAscent;
|
|
2903 |
} else if (springs.size() == 1) {
|
|
2904 |
return springs.get(0).getBaseline();
|
|
2905 |
}
|
|
2906 |
return -1;
|
|
2907 |
}
|
|
2908 |
|
|
2909 |
BaselineResizeBehavior getBaselineResizeBehavior() {
|
|
2910 |
if (springs.size() == 1) {
|
|
2911 |
return springs.get(0).getBaselineResizeBehavior();
|
|
2912 |
}
|
|
2913 |
if (baselineAnchoredToTop) {
|
|
2914 |
return BaselineResizeBehavior.CONSTANT_ASCENT;
|
|
2915 |
}
|
|
2916 |
return BaselineResizeBehavior.CONSTANT_DESCENT;
|
|
2917 |
}
|
|
2918 |
|
|
2919 |
// If the axis is VERTICAL, throws an IllegalStateException
|
|
2920 |
private void checkAxis(int axis) {
|
|
2921 |
if (axis == HORIZONTAL) {
|
|
2922 |
throw new IllegalStateException(
|
|
2923 |
"Baseline must be used along vertical axis");
|
|
2924 |
}
|
|
2925 |
}
|
|
2926 |
}
|
|
2927 |
|
|
2928 |
|
|
2929 |
private final class ComponentSpring extends Spring {
|
|
2930 |
private Component component;
|
|
2931 |
private int origin;
|
|
2932 |
|
|
2933 |
// min/pref/max are either a value >= 0 or one of
|
|
2934 |
// DEFAULT_SIZE or PREFERRED_SIZE
|
|
2935 |
private final int min;
|
|
2936 |
private final int pref;
|
|
2937 |
private final int max;
|
|
2938 |
|
|
2939 |
// Baseline for the component, computed as necessary.
|
|
2940 |
private int baseline = -1;
|
|
2941 |
|
|
2942 |
// Whether or not the size has been requested yet.
|
|
2943 |
private boolean installed;
|
|
2944 |
|
|
2945 |
private ComponentSpring(Component component, int min, int pref,
|
|
2946 |
int max) {
|
|
2947 |
this.component = component;
|
|
2948 |
if (component == null) {
|
|
2949 |
throw new IllegalArgumentException(
|
|
2950 |
"Component must be non-null");
|
|
2951 |
}
|
|
2952 |
|
|
2953 |
checkSize(min, pref, max, true);
|
|
2954 |
|
|
2955 |
this.min = min;
|
|
2956 |
this.max = max;
|
|
2957 |
this.pref = pref;
|
|
2958 |
|
|
2959 |
// getComponentInfo makes sure component is a child of the
|
|
2960 |
// Container GroupLayout is the LayoutManager for.
|
|
2961 |
getComponentInfo(component);
|
|
2962 |
}
|
|
2963 |
|
|
2964 |
int calculateMinimumSize(int axis) {
|
|
2965 |
if (isLinked(axis)) {
|
|
2966 |
return getLinkSize(axis, MIN_SIZE);
|
|
2967 |
}
|
|
2968 |
return calculateNonlinkedMinimumSize(axis);
|
|
2969 |
}
|
|
2970 |
|
|
2971 |
int calculatePreferredSize(int axis) {
|
|
2972 |
if (isLinked(axis)) {
|
|
2973 |
return getLinkSize(axis, PREF_SIZE);
|
|
2974 |
}
|
|
2975 |
int min = getMinimumSize(axis);
|
|
2976 |
int pref = calculateNonlinkedPreferredSize(axis);
|
|
2977 |
int max = getMaximumSize(axis);
|
|
2978 |
return Math.min(max, Math.max(min, pref));
|
|
2979 |
}
|
|
2980 |
|
|
2981 |
int calculateMaximumSize(int axis) {
|
|
2982 |
if (isLinked(axis)) {
|
|
2983 |
return getLinkSize(axis, MAX_SIZE);
|
|
2984 |
}
|
|
2985 |
return Math.max(getMinimumSize(axis),
|
|
2986 |
calculateNonlinkedMaximumSize(axis));
|
|
2987 |
}
|
|
2988 |
|
|
2989 |
boolean isVisible() {
|
|
2990 |
return getComponentInfo(getComponent()).isVisible();
|
|
2991 |
}
|
|
2992 |
|
|
2993 |
int calculateNonlinkedMinimumSize(int axis) {
|
|
2994 |
if (!isVisible()) {
|
|
2995 |
return 0;
|
|
2996 |
}
|
|
2997 |
if (min >= 0) {
|
|
2998 |
return min;
|
|
2999 |
}
|
|
3000 |
if (min == PREFERRED_SIZE) {
|
|
3001 |
return calculateNonlinkedPreferredSize(axis);
|
|
3002 |
}
|
|
3003 |
assert (min == DEFAULT_SIZE);
|
|
3004 |
return getSizeAlongAxis(axis, component.getMinimumSize());
|
|
3005 |
}
|
|
3006 |
|
|
3007 |
int calculateNonlinkedPreferredSize(int axis) {
|
|
3008 |
if (!isVisible()) {
|
|
3009 |
return 0;
|
|
3010 |
}
|
|
3011 |
if (pref >= 0) {
|
|
3012 |
return pref;
|
|
3013 |
}
|
|
3014 |
assert (pref == DEFAULT_SIZE || pref == PREFERRED_SIZE);
|
|
3015 |
return getSizeAlongAxis(axis, component.getPreferredSize());
|
|
3016 |
}
|
|
3017 |
|
|
3018 |
int calculateNonlinkedMaximumSize(int axis) {
|
|
3019 |
if (!isVisible()) {
|
|
3020 |
return 0;
|
|
3021 |
}
|
|
3022 |
if (max >= 0) {
|
|
3023 |
return max;
|
|
3024 |
}
|
|
3025 |
if (max == PREFERRED_SIZE) {
|
|
3026 |
return calculateNonlinkedPreferredSize(axis);
|
|
3027 |
}
|
|
3028 |
assert (max == DEFAULT_SIZE);
|
|
3029 |
return getSizeAlongAxis(axis, component.getMaximumSize());
|
|
3030 |
}
|
|
3031 |
|
|
3032 |
private int getSizeAlongAxis(int axis, Dimension size) {
|
|
3033 |
return (axis == HORIZONTAL) ? size.width : size.height;
|
|
3034 |
}
|
|
3035 |
|
|
3036 |
private int getLinkSize(int axis, int type) {
|
|
3037 |
if (!isVisible()) {
|
|
3038 |
return 0;
|
|
3039 |
}
|
|
3040 |
ComponentInfo ci = getComponentInfo(component);
|
|
3041 |
return ci.getLinkSize(axis, type);
|
|
3042 |
}
|
|
3043 |
|
|
3044 |
void setSize(int axis, int origin, int size) {
|
|
3045 |
super.setSize(axis, origin, size);
|
|
3046 |
this.origin = origin;
|
|
3047 |
if (size == UNSET) {
|
|
3048 |
baseline = -1;
|
|
3049 |
}
|
|
3050 |
}
|
|
3051 |
|
|
3052 |
int getOrigin() {
|
|
3053 |
return origin;
|
|
3054 |
}
|
|
3055 |
|
|
3056 |
void setComponent(Component component) {
|
|
3057 |
this.component = component;
|
|
3058 |
}
|
|
3059 |
|
|
3060 |
Component getComponent() {
|
|
3061 |
return component;
|
|
3062 |
}
|
|
3063 |
|
|
3064 |
int getBaseline() {
|
|
3065 |
if (baseline == -1) {
|
|
3066 |
Spring horizontalSpring = getComponentInfo(component).
|
|
3067 |
horizontalSpring;
|
|
3068 |
int width = horizontalSpring.getPreferredSize(HORIZONTAL);
|
|
3069 |
int height = getPreferredSize(VERTICAL);
|
|
3070 |
if (width > 0 && height > 0) {
|
|
3071 |
baseline = component.getBaseline(width, height);
|
|
3072 |
}
|
|
3073 |
}
|
|
3074 |
return baseline;
|
|
3075 |
}
|
|
3076 |
|
|
3077 |
BaselineResizeBehavior getBaselineResizeBehavior() {
|
|
3078 |
return getComponent().getBaselineResizeBehavior();
|
|
3079 |
}
|
|
3080 |
|
|
3081 |
private boolean isLinked(int axis) {
|
|
3082 |
return getComponentInfo(component).isLinked(axis);
|
|
3083 |
}
|
|
3084 |
|
|
3085 |
void installIfNecessary(int axis) {
|
|
3086 |
if (!installed) {
|
|
3087 |
installed = true;
|
|
3088 |
if (axis == HORIZONTAL) {
|
|
3089 |
getComponentInfo(component).horizontalSpring = this;
|
|
3090 |
} else {
|
|
3091 |
getComponentInfo(component).verticalSpring = this;
|
|
3092 |
}
|
|
3093 |
}
|
|
3094 |
}
|
|
3095 |
|
|
3096 |
@Override
|
|
3097 |
boolean willHaveZeroSize(boolean treatAutopaddingAsZeroSized) {
|
|
3098 |
return !isVisible();
|
|
3099 |
}
|
|
3100 |
}
|
|
3101 |
|
|
3102 |
|
|
3103 |
/**
|
|
3104 |
* Spring representing the preferred distance between two components.
|
|
3105 |
*/
|
|
3106 |
private class PreferredGapSpring extends Spring {
|
|
3107 |
private final JComponent source;
|
|
3108 |
private final JComponent target;
|
|
3109 |
private final ComponentPlacement type;
|
|
3110 |
private final int pref;
|
|
3111 |
private final int max;
|
|
3112 |
|
|
3113 |
PreferredGapSpring(JComponent source, JComponent target,
|
|
3114 |
ComponentPlacement type, int pref, int max) {
|
|
3115 |
this.source = source;
|
|
3116 |
this.target = target;
|
|
3117 |
this.type = type;
|
|
3118 |
this.pref = pref;
|
|
3119 |
this.max = max;
|
|
3120 |
}
|
|
3121 |
|
|
3122 |
int calculateMinimumSize(int axis) {
|
|
3123 |
return getPadding(axis);
|
|
3124 |
}
|
|
3125 |
|
|
3126 |
int calculatePreferredSize(int axis) {
|
|
3127 |
if (pref == DEFAULT_SIZE || pref == PREFERRED_SIZE) {
|
|
3128 |
return getMinimumSize(axis);
|
|
3129 |
}
|
|
3130 |
int min = getMinimumSize(axis);
|
|
3131 |
int max = getMaximumSize(axis);
|
|
3132 |
return Math.min(max, Math.max(min, pref));
|
|
3133 |
}
|
|
3134 |
|
|
3135 |
int calculateMaximumSize(int axis) {
|
|
3136 |
if (max == PREFERRED_SIZE || max == DEFAULT_SIZE) {
|
|
3137 |
return getPadding(axis);
|
|
3138 |
}
|
|
3139 |
return Math.max(getMinimumSize(axis), max);
|
|
3140 |
}
|
|
3141 |
|
|
3142 |
private int getPadding(int axis) {
|
|
3143 |
int position;
|
|
3144 |
if (axis == HORIZONTAL) {
|
|
3145 |
position = SwingConstants.EAST;
|
|
3146 |
} else {
|
|
3147 |
position = SwingConstants.SOUTH;
|
|
3148 |
}
|
|
3149 |
return getLayoutStyle0().getPreferredGap(source,
|
|
3150 |
target, type, position, host);
|
|
3151 |
}
|
|
3152 |
|
|
3153 |
@Override
|
|
3154 |
boolean willHaveZeroSize(boolean treatAutopaddingAsZeroSized) {
|
|
3155 |
return false;
|
|
3156 |
}
|
|
3157 |
}
|
|
3158 |
|
|
3159 |
|
|
3160 |
/**
|
|
3161 |
* Spring represented a certain amount of space.
|
|
3162 |
*/
|
|
3163 |
private class GapSpring extends Spring {
|
|
3164 |
private final int min;
|
|
3165 |
private final int pref;
|
|
3166 |
private final int max;
|
|
3167 |
|
|
3168 |
GapSpring(int min, int pref, int max) {
|
|
3169 |
checkSize(min, pref, max, false);
|
|
3170 |
this.min = min;
|
|
3171 |
this.pref = pref;
|
|
3172 |
this.max = max;
|
|
3173 |
}
|
|
3174 |
|
|
3175 |
int calculateMinimumSize(int axis) {
|
|
3176 |
if (min == PREFERRED_SIZE) {
|
|
3177 |
return getPreferredSize(axis);
|
|
3178 |
}
|
|
3179 |
return min;
|
|
3180 |
}
|
|
3181 |
|
|
3182 |
int calculatePreferredSize(int axis) {
|
|
3183 |
return pref;
|
|
3184 |
}
|
|
3185 |
|
|
3186 |
int calculateMaximumSize(int axis) {
|
|
3187 |
if (max == PREFERRED_SIZE) {
|
|
3188 |
return getPreferredSize(axis);
|
|
3189 |
}
|
|
3190 |
return max;
|
|
3191 |
}
|
|
3192 |
|
|
3193 |
@Override
|
|
3194 |
boolean willHaveZeroSize(boolean treatAutopaddingAsZeroSized) {
|
|
3195 |
return false;
|
|
3196 |
}
|
|
3197 |
}
|
|
3198 |
|
|
3199 |
|
|
3200 |
/**
|
|
3201 |
* Spring reprensenting the distance between any number of sources and
|
|
3202 |
* targets. The targets and sources are computed during layout. An
|
|
3203 |
* instance of this can either be dynamically created when
|
|
3204 |
* autocreatePadding is true, or explicitly created by the developer.
|
|
3205 |
*/
|
|
3206 |
private class AutoPreferredGapSpring extends Spring {
|
|
3207 |
List<ComponentSpring> sources;
|
|
3208 |
ComponentSpring source;
|
|
3209 |
private List<AutoPreferredGapMatch> matches;
|
|
3210 |
int size;
|
|
3211 |
int lastSize;
|
|
3212 |
private final int pref;
|
|
3213 |
private final int max;
|
|
3214 |
// Type of gap
|
|
3215 |
private ComponentPlacement type;
|
|
3216 |
private boolean userCreated;
|
|
3217 |
|
|
3218 |
private AutoPreferredGapSpring() {
|
|
3219 |
this.pref = PREFERRED_SIZE;
|
|
3220 |
this.max = PREFERRED_SIZE;
|
|
3221 |
this.type = ComponentPlacement.RELATED;
|
|
3222 |
}
|
|
3223 |
|
|
3224 |
AutoPreferredGapSpring(int pref, int max) {
|
|
3225 |
this.pref = pref;
|
|
3226 |
this.max = max;
|
|
3227 |
}
|
|
3228 |
|
|
3229 |
AutoPreferredGapSpring(ComponentPlacement type, int pref, int max) {
|
|
3230 |
this.type = type;
|
|
3231 |
this.pref = pref;
|
|
3232 |
this.max = max;
|
|
3233 |
this.userCreated = true;
|
|
3234 |
}
|
|
3235 |
|
|
3236 |
public void setSource(ComponentSpring source) {
|
|
3237 |
this.source = source;
|
|
3238 |
}
|
|
3239 |
|
|
3240 |
public void setSources(List<ComponentSpring> sources) {
|
|
3241 |
this.sources = new ArrayList<ComponentSpring>(sources);
|
|
3242 |
}
|
|
3243 |
|
|
3244 |
public void setUserCreated(boolean userCreated) {
|
|
3245 |
this.userCreated = userCreated;
|
|
3246 |
}
|
|
3247 |
|
|
3248 |
public boolean getUserCreated() {
|
|
3249 |
return userCreated;
|
|
3250 |
}
|
|
3251 |
|
|
3252 |
void unset() {
|
|
3253 |
lastSize = getSize();
|
|
3254 |
super.unset();
|
|
3255 |
size = 0;
|
|
3256 |
}
|
|
3257 |
|
|
3258 |
public void reset() {
|
|
3259 |
size = 0;
|
|
3260 |
sources = null;
|
|
3261 |
source = null;
|
|
3262 |
matches = null;
|
|
3263 |
}
|
|
3264 |
|
|
3265 |
public void calculatePadding(int axis) {
|
|
3266 |
size = UNSET;
|
|
3267 |
int maxPadding = UNSET;
|
|
3268 |
if (matches != null) {
|
|
3269 |
LayoutStyle p = getLayoutStyle0();
|
|
3270 |
int position;
|
|
3271 |
if (axis == HORIZONTAL) {
|
|
3272 |
if (isLeftToRight()) {
|
|
3273 |
position = SwingConstants.EAST;
|
|
3274 |
} else {
|
|
3275 |
position = SwingConstants.WEST;
|
|
3276 |
}
|
|
3277 |
} else {
|
|
3278 |
position = SwingConstants.SOUTH;
|
|
3279 |
}
|
|
3280 |
for (int i = matches.size() - 1; i >= 0; i--) {
|
|
3281 |
AutoPreferredGapMatch match = matches.get(i);
|
|
3282 |
maxPadding = Math.max(maxPadding,
|
|
3283 |
calculatePadding(p, position, match.source,
|
|
3284 |
match.target));
|
|
3285 |
}
|
|
3286 |
}
|
|
3287 |
if (size == UNSET) {
|
|
3288 |
size = 0;
|
|
3289 |
}
|
|
3290 |
if (maxPadding == UNSET) {
|
|
3291 |
maxPadding = 0;
|
|
3292 |
}
|
|
3293 |
if (lastSize != UNSET) {
|
|
3294 |
size += Math.min(maxPadding, lastSize);
|
|
3295 |
}
|
|
3296 |
}
|
|
3297 |
|
|
3298 |
private int calculatePadding(LayoutStyle p, int position,
|
|
3299 |
ComponentSpring source,
|
|
3300 |
ComponentSpring target) {
|
|
3301 |
int delta = target.getOrigin() - (source.getOrigin() +
|
|
3302 |
source.getSize());
|
|
3303 |
if (delta >= 0) {
|
|
3304 |
int padding;
|
|
3305 |
if ((source.getComponent() instanceof JComponent) &&
|
|
3306 |
(target.getComponent() instanceof JComponent)) {
|
|
3307 |
padding = p.getPreferredGap(
|
|
3308 |
(JComponent)source.getComponent(),
|
|
3309 |
(JComponent)target.getComponent(), type, position,
|
|
3310 |
host);
|
|
3311 |
} else {
|
|
3312 |
padding = 10;
|
|
3313 |
}
|
|
3314 |
if (padding > delta) {
|
|
3315 |
size = Math.max(size, padding - delta);
|
|
3316 |
}
|
|
3317 |
return padding;
|
|
3318 |
}
|
|
3319 |
return 0;
|
|
3320 |
}
|
|
3321 |
|
|
3322 |
public void addTarget(ComponentSpring spring, int axis) {
|
|
3323 |
int oAxis = (axis == HORIZONTAL) ? VERTICAL : HORIZONTAL;
|
|
3324 |
if (source != null) {
|
|
3325 |
if (areParallelSiblings(source.getComponent(),
|
|
3326 |
spring.getComponent(), oAxis)) {
|
|
3327 |
addValidTarget(source, spring);
|
|
3328 |
}
|
|
3329 |
} else {
|
|
3330 |
Component component = spring.getComponent();
|
|
3331 |
for (int counter = sources.size() - 1; counter >= 0;
|
|
3332 |
counter--){
|
|
3333 |
ComponentSpring source = sources.get(counter);
|
|
3334 |
if (areParallelSiblings(source.getComponent(),
|
|
3335 |
component, oAxis)) {
|
|
3336 |
addValidTarget(source, spring);
|
|
3337 |
}
|
|
3338 |
}
|
|
3339 |
}
|
|
3340 |
}
|
|
3341 |
|
|
3342 |
private void addValidTarget(ComponentSpring source,
|
|
3343 |
ComponentSpring target) {
|
|
3344 |
if (matches == null) {
|
|
3345 |
matches = new ArrayList<AutoPreferredGapMatch>(1);
|
|
3346 |
}
|
|
3347 |
matches.add(new AutoPreferredGapMatch(source, target));
|
|
3348 |
}
|
|
3349 |
|
|
3350 |
int calculateMinimumSize(int axis) {
|
|
3351 |
return size;
|
|
3352 |
}
|
|
3353 |
|
|
3354 |
int calculatePreferredSize(int axis) {
|
|
3355 |
if (pref == PREFERRED_SIZE || pref == DEFAULT_SIZE) {
|
|
3356 |
return size;
|
|
3357 |
}
|
|
3358 |
return Math.max(size, pref);
|
|
3359 |
}
|
|
3360 |
|
|
3361 |
int calculateMaximumSize(int axis) {
|
|
3362 |
if (max >= 0) {
|
|
3363 |
return Math.max(getPreferredSize(axis), max);
|
|
3364 |
}
|
|
3365 |
return size;
|
|
3366 |
}
|
|
3367 |
|
|
3368 |
String getMatchDescription() {
|
|
3369 |
return (matches == null) ? "" : matches.toString();
|
|
3370 |
}
|
|
3371 |
|
|
3372 |
public String toString() {
|
|
3373 |
return super.toString() + getMatchDescription();
|
|
3374 |
}
|
|
3375 |
|
|
3376 |
@Override
|
|
3377 |
boolean willHaveZeroSize(boolean treatAutopaddingAsZeroSized) {
|
|
3378 |
return treatAutopaddingAsZeroSized;
|
|
3379 |
}
|
|
3380 |
}
|
|
3381 |
|
|
3382 |
|
|
3383 |
/**
|
|
3384 |
* Represents two springs that should have autopadding inserted between
|
|
3385 |
* them.
|
|
3386 |
*/
|
|
3387 |
private final static class AutoPreferredGapMatch {
|
|
3388 |
public final ComponentSpring source;
|
|
3389 |
public final ComponentSpring target;
|
|
3390 |
|
|
3391 |
AutoPreferredGapMatch(ComponentSpring source, ComponentSpring target) {
|
|
3392 |
this.source = source;
|
|
3393 |
this.target = target;
|
|
3394 |
}
|
|
3395 |
|
|
3396 |
private String toString(ComponentSpring spring) {
|
|
3397 |
return spring.getComponent().getName();
|
|
3398 |
}
|
|
3399 |
|
|
3400 |
public String toString() {
|
|
3401 |
return "[" + toString(source) + "-" + toString(target) + "]";
|
|
3402 |
}
|
|
3403 |
}
|
|
3404 |
|
|
3405 |
|
|
3406 |
/**
|
|
3407 |
* An extension of AutopaddingSpring used for container level padding.
|
|
3408 |
*/
|
|
3409 |
private class ContainerAutoPreferredGapSpring extends
|
|
3410 |
AutoPreferredGapSpring {
|
|
3411 |
private List<ComponentSpring> targets;
|
|
3412 |
|
|
3413 |
ContainerAutoPreferredGapSpring() {
|
|
3414 |
super();
|
|
3415 |
setUserCreated(true);
|
|
3416 |
}
|
|
3417 |
|
|
3418 |
ContainerAutoPreferredGapSpring(int pref, int max) {
|
|
3419 |
super(pref, max);
|
|
3420 |
setUserCreated(true);
|
|
3421 |
}
|
|
3422 |
|
|
3423 |
public void addTarget(ComponentSpring spring, int axis) {
|
|
3424 |
if (targets == null) {
|
|
3425 |
targets = new ArrayList<ComponentSpring>(1);
|
|
3426 |
}
|
|
3427 |
targets.add(spring);
|
|
3428 |
}
|
|
3429 |
|
|
3430 |
public void calculatePadding(int axis) {
|
|
3431 |
LayoutStyle p = getLayoutStyle0();
|
|
3432 |
int maxPadding = 0;
|
|
3433 |
int position;
|
|
3434 |
size = 0;
|
|
3435 |
if (targets != null) {
|
|
3436 |
// Leading
|
|
3437 |
if (axis == HORIZONTAL) {
|
|
3438 |
if (isLeftToRight()) {
|
|
3439 |
position = SwingConstants.WEST;
|
|
3440 |
} else {
|
|
3441 |
position = SwingConstants.EAST;
|
|
3442 |
}
|
|
3443 |
} else {
|
|
3444 |
position = SwingConstants.SOUTH;
|
|
3445 |
}
|
|
3446 |
for (int i = targets.size() - 1; i >= 0; i--) {
|
|
3447 |
ComponentSpring targetSpring = targets.get(i);
|
|
3448 |
int padding = 10;
|
|
3449 |
if (targetSpring.getComponent() instanceof JComponent) {
|
|
3450 |
padding = p.getContainerGap(
|
|
3451 |
(JComponent)targetSpring.getComponent(),
|
|
3452 |
position, host);
|
|
3453 |
maxPadding = Math.max(padding, maxPadding);
|
|
3454 |
padding -= targetSpring.getOrigin();
|
|
3455 |
} else {
|
|
3456 |
maxPadding = Math.max(padding, maxPadding);
|
|
3457 |
}
|
|
3458 |
size = Math.max(size, padding);
|
|
3459 |
}
|
|
3460 |
} else {
|
|
3461 |
// Trailing
|
|
3462 |
if (axis == HORIZONTAL) {
|
|
3463 |
if (isLeftToRight()) {
|
|
3464 |
position = SwingConstants.EAST;
|
|
3465 |
} else {
|
|
3466 |
position = SwingConstants.WEST;
|
|
3467 |
}
|
|
3468 |
} else {
|
|
3469 |
position = SwingConstants.SOUTH;
|
|
3470 |
}
|
|
3471 |
if (sources != null) {
|
|
3472 |
for (int i = sources.size() - 1; i >= 0; i--) {
|
|
3473 |
ComponentSpring sourceSpring = sources.get(i);
|
|
3474 |
maxPadding = Math.max(maxPadding,
|
|
3475 |
updateSize(p, sourceSpring, position));
|
|
3476 |
}
|
|
3477 |
} else if (source != null) {
|
|
3478 |
maxPadding = updateSize(p, source, position);
|
|
3479 |
}
|
|
3480 |
}
|
|
3481 |
if (lastSize != UNSET) {
|
|
3482 |
size += Math.min(maxPadding, lastSize);
|
|
3483 |
}
|
|
3484 |
}
|
|
3485 |
|
|
3486 |
private int updateSize(LayoutStyle p, ComponentSpring sourceSpring,
|
|
3487 |
int position) {
|
|
3488 |
int padding = 10;
|
|
3489 |
if (sourceSpring.getComponent() instanceof JComponent) {
|
|
3490 |
padding = p.getContainerGap(
|
|
3491 |
(JComponent)sourceSpring.getComponent(), position,
|
|
3492 |
host);
|
|
3493 |
}
|
|
3494 |
int delta = Math.max(0, getParent().getSize() -
|
|
3495 |
sourceSpring.getSize() - sourceSpring.getOrigin());
|
|
3496 |
size = Math.max(size, padding - delta);
|
|
3497 |
return padding;
|
|
3498 |
}
|
|
3499 |
|
|
3500 |
String getMatchDescription() {
|
|
3501 |
if (targets != null) {
|
|
3502 |
return "leading: " + targets.toString();
|
|
3503 |
}
|
|
3504 |
if (sources != null) {
|
|
3505 |
return "trailing: " + sources.toString();
|
|
3506 |
}
|
|
3507 |
return "--";
|
|
3508 |
}
|
|
3509 |
}
|
|
3510 |
|
|
3511 |
|
|
3512 |
// LinkInfo contains the set of ComponentInfosthat are linked along a
|
|
3513 |
// particular axis.
|
|
3514 |
private static class LinkInfo {
|
|
3515 |
private final int axis;
|
|
3516 |
private final List<ComponentInfo> linked;
|
|
3517 |
private int size;
|
|
3518 |
|
|
3519 |
LinkInfo(int axis) {
|
|
3520 |
linked = new ArrayList<ComponentInfo>();
|
|
3521 |
size = UNSET;
|
|
3522 |
this.axis = axis;
|
|
3523 |
}
|
|
3524 |
|
|
3525 |
public void add(ComponentInfo child) {
|
|
3526 |
LinkInfo childMaster = child.getLinkInfo(axis, false);
|
|
3527 |
if (childMaster == null) {
|
|
3528 |
linked.add(child);
|
|
3529 |
child.setLinkInfo(axis, this);
|
|
3530 |
} else if (childMaster != this) {
|
|
3531 |
linked.addAll(childMaster.linked);
|
|
3532 |
for (ComponentInfo childInfo : childMaster.linked) {
|
|
3533 |
childInfo.setLinkInfo(axis, this);
|
|
3534 |
}
|
|
3535 |
}
|
|
3536 |
clearCachedSize();
|
|
3537 |
}
|
|
3538 |
|
|
3539 |
public void remove(ComponentInfo info) {
|
|
3540 |
linked.remove(info);
|
|
3541 |
info.setLinkInfo(axis, null);
|
|
3542 |
if (linked.size() == 1) {
|
|
3543 |
linked.get(0).setLinkInfo(axis, null);
|
|
3544 |
}
|
|
3545 |
clearCachedSize();
|
|
3546 |
}
|
|
3547 |
|
|
3548 |
public void clearCachedSize() {
|
|
3549 |
size = UNSET;
|
|
3550 |
}
|
|
3551 |
|
|
3552 |
public int getSize(int axis) {
|
|
3553 |
if (size == UNSET) {
|
|
3554 |
size = calculateLinkedSize(axis);
|
|
3555 |
}
|
|
3556 |
return size;
|
|
3557 |
}
|
|
3558 |
|
|
3559 |
private int calculateLinkedSize(int axis) {
|
|
3560 |
int size = 0;
|
|
3561 |
for (ComponentInfo info : linked) {
|
|
3562 |
ComponentSpring spring;
|
|
3563 |
if (axis == HORIZONTAL) {
|
|
3564 |
spring = info.horizontalSpring;
|
|
3565 |
} else {
|
|
3566 |
assert (axis == VERTICAL);
|
|
3567 |
spring = info.verticalSpring;
|
|
3568 |
}
|
|
3569 |
size = Math.max(size,
|
|
3570 |
spring.calculateNonlinkedPreferredSize(axis));
|
|
3571 |
}
|
|
3572 |
return size;
|
|
3573 |
}
|
|
3574 |
}
|
|
3575 |
|
|
3576 |
/**
|
|
3577 |
* Tracks the horizontal/vertical Springs for a Component.
|
|
3578 |
* This class is also used to handle Springs that have their sizes
|
|
3579 |
* linked.
|
|
3580 |
*/
|
|
3581 |
private class ComponentInfo {
|
|
3582 |
// Component being layed out
|
|
3583 |
private Component component;
|
|
3584 |
|
|
3585 |
ComponentSpring horizontalSpring;
|
|
3586 |
ComponentSpring verticalSpring;
|
|
3587 |
|
|
3588 |
// If the component's size is linked to other components, the
|
|
3589 |
// horizontalMaster and/or verticalMaster reference the group of
|
|
3590 |
// linked components.
|
|
3591 |
private LinkInfo horizontalMaster;
|
|
3592 |
private LinkInfo verticalMaster;
|
|
3593 |
|
|
3594 |
private boolean visible;
|
|
3595 |
private Boolean honorsVisibility;
|
|
3596 |
|
|
3597 |
ComponentInfo(Component component) {
|
|
3598 |
this.component = component;
|
|
3599 |
updateVisibility();
|
|
3600 |
}
|
|
3601 |
|
|
3602 |
public void dispose() {
|
|
3603 |
// Remove horizontal/vertical springs
|
|
3604 |
removeSpring(horizontalSpring);
|
|
3605 |
horizontalSpring = null;
|
|
3606 |
removeSpring(verticalSpring);
|
|
3607 |
verticalSpring = null;
|
|
3608 |
// Clean up links
|
|
3609 |
if (horizontalMaster != null) {
|
|
3610 |
horizontalMaster.remove(this);
|
|
3611 |
}
|
|
3612 |
if (verticalMaster != null) {
|
|
3613 |
verticalMaster.remove(this);
|
|
3614 |
}
|
|
3615 |
}
|
|
3616 |
|
|
3617 |
void setHonorsVisibility(Boolean honorsVisibility) {
|
|
3618 |
this.honorsVisibility = honorsVisibility;
|
|
3619 |
}
|
|
3620 |
|
|
3621 |
private void removeSpring(Spring spring) {
|
|
3622 |
if (spring != null) {
|
|
3623 |
((Group)spring.getParent()).springs.remove(spring);
|
|
3624 |
}
|
|
3625 |
}
|
|
3626 |
|
|
3627 |
public boolean isVisible() {
|
|
3628 |
return visible;
|
|
3629 |
}
|
|
3630 |
|
|
3631 |
/**
|
|
3632 |
* Updates the cached visibility.
|
|
3633 |
*
|
|
3634 |
* @return true if the visibility changed
|
|
3635 |
*/
|
|
3636 |
boolean updateVisibility() {
|
|
3637 |
boolean honorsVisibility;
|
|
3638 |
if (this.honorsVisibility == null) {
|
|
3639 |
honorsVisibility = GroupLayout.this.getHonorsVisibility();
|
|
3640 |
} else {
|
|
3641 |
honorsVisibility = this.honorsVisibility;
|
|
3642 |
}
|
|
3643 |
boolean newVisible = (honorsVisibility) ?
|
|
3644 |
component.isVisible() : true;
|
|
3645 |
if (visible != newVisible) {
|
|
3646 |
visible = newVisible;
|
|
3647 |
return true;
|
|
3648 |
}
|
|
3649 |
return false;
|
|
3650 |
}
|
|
3651 |
|
|
3652 |
public void setBounds(Insets insets, int parentWidth, boolean ltr) {
|
|
3653 |
int x = horizontalSpring.getOrigin();
|
|
3654 |
int w = horizontalSpring.getSize();
|
|
3655 |
int y = verticalSpring.getOrigin();
|
|
3656 |
int h = verticalSpring.getSize();
|
|
3657 |
|
|
3658 |
if (!ltr) {
|
|
3659 |
x = parentWidth - x - w;
|
|
3660 |
}
|
|
3661 |
component.setBounds(x + insets.left, y + insets.top, w, h);
|
|
3662 |
}
|
|
3663 |
|
|
3664 |
public void setComponent(Component component) {
|
|
3665 |
this.component = component;
|
|
3666 |
if (horizontalSpring != null) {
|
|
3667 |
horizontalSpring.setComponent(component);
|
|
3668 |
}
|
|
3669 |
if (verticalSpring != null) {
|
|
3670 |
verticalSpring.setComponent(component);
|
|
3671 |
}
|
|
3672 |
}
|
|
3673 |
|
|
3674 |
public Component getComponent() {
|
|
3675 |
return component;
|
|
3676 |
}
|
|
3677 |
|
|
3678 |
/**
|
|
3679 |
* Returns true if this component has its size linked to
|
|
3680 |
* other components.
|
|
3681 |
*/
|
|
3682 |
public boolean isLinked(int axis) {
|
|
3683 |
if (axis == HORIZONTAL) {
|
|
3684 |
return horizontalMaster != null;
|
|
3685 |
}
|
|
3686 |
assert (axis == VERTICAL);
|
|
3687 |
return (verticalMaster != null);
|
|
3688 |
}
|
|
3689 |
|
|
3690 |
private void setLinkInfo(int axis, LinkInfo linkInfo) {
|
|
3691 |
if (axis == HORIZONTAL) {
|
|
3692 |
horizontalMaster = linkInfo;
|
|
3693 |
} else {
|
|
3694 |
assert (axis == VERTICAL);
|
|
3695 |
verticalMaster = linkInfo;
|
|
3696 |
}
|
|
3697 |
}
|
|
3698 |
|
|
3699 |
public LinkInfo getLinkInfo(int axis) {
|
|
3700 |
return getLinkInfo(axis, true);
|
|
3701 |
}
|
|
3702 |
|
|
3703 |
private LinkInfo getLinkInfo(int axis, boolean create) {
|
|
3704 |
if (axis == HORIZONTAL) {
|
|
3705 |
if (horizontalMaster == null && create) {
|
|
3706 |
// horizontalMaster field is directly set by adding
|
|
3707 |
// us to the LinkInfo.
|
|
3708 |
new LinkInfo(HORIZONTAL).add(this);
|
|
3709 |
}
|
|
3710 |
return horizontalMaster;
|
|
3711 |
} else {
|
|
3712 |
assert (axis == VERTICAL);
|
|
3713 |
if (verticalMaster == null && create) {
|
|
3714 |
// verticalMaster field is directly set by adding
|
|
3715 |
// us to the LinkInfo.
|
|
3716 |
new LinkInfo(VERTICAL).add(this);
|
|
3717 |
}
|
|
3718 |
return verticalMaster;
|
|
3719 |
}
|
|
3720 |
}
|
|
3721 |
|
|
3722 |
public void clearCachedSize() {
|
|
3723 |
if (horizontalMaster != null) {
|
|
3724 |
horizontalMaster.clearCachedSize();
|
|
3725 |
}
|
|
3726 |
if (verticalMaster != null) {
|
|
3727 |
verticalMaster.clearCachedSize();
|
|
3728 |
}
|
|
3729 |
}
|
|
3730 |
|
|
3731 |
int getLinkSize(int axis, int type) {
|
|
3732 |
if (axis == HORIZONTAL) {
|
|
3733 |
return horizontalMaster.getSize(axis);
|
|
3734 |
} else {
|
|
3735 |
assert (axis == VERTICAL);
|
|
3736 |
return verticalMaster.getSize(axis);
|
|
3737 |
}
|
|
3738 |
}
|
|
3739 |
|
|
3740 |
}
|
|
3741 |
}
|