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/*
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* Copyright 1997-2006 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.plaf.basic;
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import java.util.*;
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import java.awt.*;
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import java.awt.event.*;
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import java.awt.font.*;
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import java.awt.datatransfer.*;
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import java.awt.dnd.*;
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import java.awt.im.InputContext;
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import java.beans.*;
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import java.io.*;
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import java.net.*;
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import javax.swing.*;
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import javax.swing.plaf.*;
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import javax.swing.text.*;
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import javax.swing.event.*;
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import javax.swing.border.Border;
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import javax.swing.plaf.UIResource;
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import sun.swing.DefaultLookup;
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import sun.awt.AppContext;
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import javax.swing.plaf.basic.DragRecognitionSupport.BeforeDrag;
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/**
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* <p>
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* Basis of a text components look-and-feel. This provides the
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* basic editor view and controller services that may be useful
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* when creating a look-and-feel for an extension of
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* <code>JTextComponent</code>.
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* <p>
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* Most state is held in the associated <code>JTextComponent</code>
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* as bound properties, and the UI installs default values for the
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* various properties. This default will install something for
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* all of the properties. Typically, a LAF implementation will
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* do more however. At a minimum, a LAF would generally install
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* key bindings.
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* <p>
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* This class also provides some concurrency support if the
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* <code>Document</code> associated with the JTextComponent is a subclass of
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* <code>AbstractDocument</code>. Access to the View (or View hierarchy) is
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* serialized between any thread mutating the model and the Swing
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* event thread (which is expected to render, do model/view coordinate
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* translation, etc). <em>Any access to the root view should first
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* acquire a read-lock on the AbstractDocument and release that lock
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* in a finally block.</em>
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* <p>
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* An important method to define is the {@link #getPropertyPrefix} method
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* which is used as the basis of the keys used to fetch defaults
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* from the UIManager. The string should reflect the type of
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* TextUI (eg. TextField, TextArea, etc) without the particular
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* LAF part of the name (eg Metal, Motif, etc).
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* <p>
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* To build a view of the model, one of the following strategies
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* can be employed.
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* <ol>
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* <li>
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* One strategy is to simply redefine the
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* ViewFactory interface in the UI. By default, this UI itself acts
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* as the factory for View implementations. This is useful
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* for simple factories. To do this reimplement the
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* {@link #create} method.
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* <li>
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* A common strategy for creating more complex types of documents
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* is to have the EditorKit implementation return a factory. Since
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* the EditorKit ties all of the pieces necessary to maintain a type
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* of document, the factory is typically an important part of that
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* and should be produced by the EditorKit implementation.
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* </ol>
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* <p>
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* <strong>Warning:</strong>
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* Serialized objects of this class will not be compatible with
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* future Swing releases. The current serialization support is
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* appropriate for short term storage or RMI between applications running
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* the same version of Swing. As of 1.4, support for long term storage
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* of all JavaBeans<sup><font size="-2">TM</font></sup>
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* has been added to the <code>java.beans</code> package.
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* Please see {@link java.beans.XMLEncoder}.
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*
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* @author Timothy Prinzing
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* @author Shannon Hickey (drag and drop)
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*/
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public abstract class BasicTextUI extends TextUI implements ViewFactory {
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/**
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* Creates a new UI.
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*/
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public BasicTextUI() {
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painted = false;
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}
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/**
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* Creates the object to use for a caret. By default an
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* instance of BasicCaret is created. This method
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* can be redefined to provide something else that implements
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* the InputPosition interface or a subclass of JCaret.
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*
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* @return the caret object
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*/
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protected Caret createCaret() {
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return new BasicCaret();
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}
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/**
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* Creates the object to use for adding highlights. By default
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* an instance of BasicHighlighter is created. This method
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* can be redefined to provide something else that implements
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* the Highlighter interface or a subclass of DefaultHighlighter.
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*
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* @return the highlighter
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*/
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protected Highlighter createHighlighter() {
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return new BasicHighlighter();
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}
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/**
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* Fetches the name of the keymap that will be installed/used
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* by default for this UI. This is implemented to create a
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* name based upon the classname. The name is the the name
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* of the class with the package prefix removed.
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*
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* @return the name
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*/
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protected String getKeymapName() {
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String nm = getClass().getName();
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int index = nm.lastIndexOf('.');
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if (index >= 0) {
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nm = nm.substring(index+1, nm.length());
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}
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return nm;
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}
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/**
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* Creates the keymap to use for the text component, and installs
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* any necessary bindings into it. By default, the keymap is
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* shared between all instances of this type of TextUI. The
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* keymap has the name defined by the getKeymapName method. If the
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* keymap is not found, then DEFAULT_KEYMAP from JTextComponent is used.
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* <p>
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* The set of bindings used to create the keymap is fetched
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* from the UIManager using a key formed by combining the
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* {@link #getPropertyPrefix} method
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* and the string <code>.keyBindings</code>. The type is expected
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* to be <code>JTextComponent.KeyBinding[]</code>.
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*
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* @return the keymap
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* @see #getKeymapName
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* @see javax.swing.text.JTextComponent
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*/
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protected Keymap createKeymap() {
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String nm = getKeymapName();
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Keymap map = JTextComponent.getKeymap(nm);
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if (map == null) {
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Keymap parent = JTextComponent.getKeymap(JTextComponent.DEFAULT_KEYMAP);
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map = JTextComponent.addKeymap(nm, parent);
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String prefix = getPropertyPrefix();
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Object o = DefaultLookup.get(editor, this,
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prefix + ".keyBindings");
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if ((o != null) && (o instanceof JTextComponent.KeyBinding[])) {
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JTextComponent.KeyBinding[] bindings = (JTextComponent.KeyBinding[]) o;
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JTextComponent.loadKeymap(map, bindings, getComponent().getActions());
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}
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}
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return map;
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}
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/**
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* This method gets called when a bound property is changed
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* on the associated JTextComponent. This is a hook
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* which UI implementations may change to reflect how the
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* UI displays bound properties of JTextComponent subclasses.
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* This is implemented to do nothing (i.e. the response to
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* properties in JTextComponent itself are handled prior
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* to calling this method).
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*
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* This implementation updates the background of the text
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* component if the editable and/or enabled state changes.
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*
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* @param evt the property change event
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*/
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protected void propertyChange(PropertyChangeEvent evt) {
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if (evt.getPropertyName().equals("editable") ||
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evt.getPropertyName().equals("enabled")) {
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updateBackground((JTextComponent)evt.getSource());
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}
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}
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/**
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* Updates the background of the text component based on whether the
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* text component is editable and/or enabled.
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*
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* @param c the JTextComponent that needs its background color updated
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*/
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private void updateBackground(JTextComponent c) {
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// This is a temporary workaround.
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// This code does not correctly deal with Synth (Synth doesn't use
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// properties like this), nor does it deal with the situation where
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// the developer grabs the color from a JLabel and sets it as
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// the background for a JTextArea in all look and feels. The problem
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// scenario results if the Color obtained for the Label and TextArea
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// is ==, which is the case for the windows look and feel.
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// Until an appropriate solution is found, the code is being
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// reverted to what it was before the original fix.
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if (this instanceof sun.swing.plaf.synth.SynthUI ||
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(c instanceof JTextArea)) {
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return;
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}
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Color background = c.getBackground();
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if (background instanceof UIResource) {
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String prefix = getPropertyPrefix();
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Color disabledBG =
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DefaultLookup.getColor(c, this, prefix + ".disabledBackground", null);
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Color inactiveBG =
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DefaultLookup.getColor(c, this, prefix + ".inactiveBackground", null);
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Color bg =
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DefaultLookup.getColor(c, this, prefix + ".background", null);
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/* In an ideal situation, the following check would not be necessary
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* and we would replace the color any time the previous color was a
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* UIResouce. However, it turns out that there is existing code that
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* uses the following inadvisable pattern to turn a text area into
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* what appears to be a multi-line label:
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*
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* JLabel label = new JLabel();
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* JTextArea area = new JTextArea();
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* area.setBackground(label.getBackground());
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* area.setEditable(false);
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*
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* JLabel's default background is a UIResource. As such, just
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* checking for UIResource would have us always changing the
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* background away from what the developer wanted.
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*
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* Therefore, for JTextArea/JEditorPane, we'll additionally check
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* that the color we're about to replace matches one that was
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* installed by us from the UIDefaults.
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*/
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if ((c instanceof JTextArea || c instanceof JEditorPane)
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&& background != disabledBG
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&& background != inactiveBG
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&& background != bg) {
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return;
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}
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Color newColor = null;
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if (!c.isEnabled()) {
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newColor = disabledBG;
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}
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if (newColor == null && !c.isEditable()) {
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newColor = inactiveBG;
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}
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if (newColor == null) {
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newColor = bg;
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}
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if (newColor != null && newColor != background) {
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c.setBackground(newColor);
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}
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}
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}
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/**
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* Gets the name used as a key to look up properties through the
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* UIManager. This is used as a prefix to all the standard
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* text properties.
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*
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* @return the name
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*/
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protected abstract String getPropertyPrefix();
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/**
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* Initializes component properties, e.g. font, foreground,
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* background, caret color, selection color, selected text color,
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* disabled text color, and border color. The font, foreground, and
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* background properties are only set if their current value is either null
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* or a UIResource, other properties are set if the current
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* value is null.
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*
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* @see #uninstallDefaults
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* @see #installUI
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*/
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protected void installDefaults()
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{
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String prefix = getPropertyPrefix();
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Font f = editor.getFont();
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if ((f == null) || (f instanceof UIResource)) {
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editor.setFont(UIManager.getFont(prefix + ".font"));
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}
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Color bg = editor.getBackground();
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if ((bg == null) || (bg instanceof UIResource)) {
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editor.setBackground(UIManager.getColor(prefix + ".background"));
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}
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Color fg = editor.getForeground();
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if ((fg == null) || (fg instanceof UIResource)) {
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editor.setForeground(UIManager.getColor(prefix + ".foreground"));
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}
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Color color = editor.getCaretColor();
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if ((color == null) || (color instanceof UIResource)) {
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editor.setCaretColor(UIManager.getColor(prefix + ".caretForeground"));
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}
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Color s = editor.getSelectionColor();
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if ((s == null) || (s instanceof UIResource)) {
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editor.setSelectionColor(UIManager.getColor(prefix + ".selectionBackground"));
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}
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Color sfg = editor.getSelectedTextColor();
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if ((sfg == null) || (sfg instanceof UIResource)) {
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editor.setSelectedTextColor(UIManager.getColor(prefix + ".selectionForeground"));
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}
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Color dfg = editor.getDisabledTextColor();
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if ((dfg == null) || (dfg instanceof UIResource)) {
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editor.setDisabledTextColor(UIManager.getColor(prefix + ".inactiveForeground"));
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}
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Border b = editor.getBorder();
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if ((b == null) || (b instanceof UIResource)) {
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editor.setBorder(UIManager.getBorder(prefix + ".border"));
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}
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Insets margin = editor.getMargin();
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if (margin == null || margin instanceof UIResource) {
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editor.setMargin(UIManager.getInsets(prefix + ".margin"));
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}
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updateCursor();
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}
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private void installDefaults2() {
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editor.addMouseListener(dragListener);
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editor.addMouseMotionListener(dragListener);
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String prefix = getPropertyPrefix();
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Caret caret = editor.getCaret();
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if (caret == null || caret instanceof UIResource) {
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caret = createCaret();
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editor.setCaret(caret);
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int rate = DefaultLookup.getInt(getComponent(), this, prefix + ".caretBlinkRate", 500);
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caret.setBlinkRate(rate);
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}
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Highlighter highlighter = editor.getHighlighter();
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if (highlighter == null || highlighter instanceof UIResource) {
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editor.setHighlighter(createHighlighter());
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}
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TransferHandler th = editor.getTransferHandler();
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if (th == null || th instanceof UIResource) {
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editor.setTransferHandler(getTransferHandler());
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}
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}
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/**
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* Sets the component properties that haven't been explicitly overridden to
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* null. A property is considered overridden if its current value
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* is not a UIResource.
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*
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* @see #installDefaults
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* @see #uninstallUI
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*/
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protected void uninstallDefaults()
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{
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editor.removeMouseListener(dragListener);
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editor.removeMouseMotionListener(dragListener);
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if (editor.getCaretColor() instanceof UIResource) {
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editor.setCaretColor(null);
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}
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if (editor.getSelectionColor() instanceof UIResource) {
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editor.setSelectionColor(null);
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}
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if (editor.getDisabledTextColor() instanceof UIResource) {
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editor.setDisabledTextColor(null);
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}
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if (editor.getSelectedTextColor() instanceof UIResource) {
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|
408 |
editor.setSelectedTextColor(null);
|
|
409 |
}
|
|
410 |
|
|
411 |
if (editor.getBorder() instanceof UIResource) {
|
|
412 |
editor.setBorder(null);
|
|
413 |
}
|
|
414 |
|
|
415 |
if (editor.getMargin() instanceof UIResource) {
|
|
416 |
editor.setMargin(null);
|
|
417 |
}
|
|
418 |
|
|
419 |
if (editor.getCaret() instanceof UIResource) {
|
|
420 |
editor.setCaret(null);
|
|
421 |
}
|
|
422 |
|
|
423 |
if (editor.getHighlighter() instanceof UIResource) {
|
|
424 |
editor.setHighlighter(null);
|
|
425 |
}
|
|
426 |
|
|
427 |
if (editor.getTransferHandler() instanceof UIResource) {
|
|
428 |
editor.setTransferHandler(null);
|
|
429 |
}
|
|
430 |
|
|
431 |
if (editor.getCursor() instanceof UIResource) {
|
|
432 |
editor.setCursor(null);
|
|
433 |
}
|
|
434 |
}
|
|
435 |
|
|
436 |
/**
|
|
437 |
* Installs listeners for the UI.
|
|
438 |
*/
|
|
439 |
protected void installListeners() {
|
|
440 |
}
|
|
441 |
|
|
442 |
/**
|
|
443 |
* Uninstalls listeners for the UI.
|
|
444 |
*/
|
|
445 |
protected void uninstallListeners() {
|
|
446 |
}
|
|
447 |
|
|
448 |
protected void installKeyboardActions() {
|
|
449 |
// backward compatibility support... keymaps for the UI
|
|
450 |
// are now installed in the more friendly input map.
|
|
451 |
editor.setKeymap(createKeymap());
|
|
452 |
|
|
453 |
InputMap km = getInputMap();
|
|
454 |
if (km != null) {
|
|
455 |
SwingUtilities.replaceUIInputMap(editor, JComponent.WHEN_FOCUSED,
|
|
456 |
km);
|
|
457 |
}
|
|
458 |
|
|
459 |
ActionMap map = getActionMap();
|
|
460 |
if (map != null) {
|
|
461 |
SwingUtilities.replaceUIActionMap(editor, map);
|
|
462 |
}
|
|
463 |
|
|
464 |
updateFocusAcceleratorBinding(false);
|
|
465 |
}
|
|
466 |
|
|
467 |
/**
|
|
468 |
* Get the InputMap to use for the UI.
|
|
469 |
*/
|
|
470 |
InputMap getInputMap() {
|
|
471 |
InputMap map = new InputMapUIResource();
|
|
472 |
|
|
473 |
InputMap shared =
|
|
474 |
(InputMap)DefaultLookup.get(editor, this,
|
|
475 |
getPropertyPrefix() + ".focusInputMap");
|
|
476 |
if (shared != null) {
|
|
477 |
map.setParent(shared);
|
|
478 |
}
|
|
479 |
return map;
|
|
480 |
}
|
|
481 |
|
|
482 |
/**
|
|
483 |
* Invoked when the focus accelerator changes, this will update the
|
|
484 |
* key bindings as necessary.
|
|
485 |
*/
|
|
486 |
void updateFocusAcceleratorBinding(boolean changed) {
|
|
487 |
char accelerator = editor.getFocusAccelerator();
|
|
488 |
|
|
489 |
if (changed || accelerator != '\0') {
|
|
490 |
InputMap km = SwingUtilities.getUIInputMap
|
|
491 |
(editor, JComponent.WHEN_IN_FOCUSED_WINDOW);
|
|
492 |
|
|
493 |
if (km == null && accelerator != '\0') {
|
|
494 |
km = new ComponentInputMapUIResource(editor);
|
|
495 |
SwingUtilities.replaceUIInputMap(editor, JComponent.
|
|
496 |
WHEN_IN_FOCUSED_WINDOW, km);
|
|
497 |
ActionMap am = getActionMap();
|
|
498 |
SwingUtilities.replaceUIActionMap(editor, am);
|
|
499 |
}
|
|
500 |
if (km != null) {
|
|
501 |
km.clear();
|
|
502 |
if (accelerator != '\0') {
|
|
503 |
km.put(KeyStroke.getKeyStroke(accelerator,
|
|
504 |
ActionEvent.ALT_MASK),
|
|
505 |
"requestFocus");
|
|
506 |
}
|
|
507 |
}
|
|
508 |
}
|
|
509 |
}
|
|
510 |
|
|
511 |
|
|
512 |
/**
|
|
513 |
* Invoked when editable property is changed.
|
|
514 |
*
|
|
515 |
* removing 'TAB' and 'SHIFT-TAB' from traversalKeysSet in case
|
|
516 |
* editor is editable
|
|
517 |
* adding 'TAB' and 'SHIFT-TAB' to traversalKeysSet in case
|
|
518 |
* editor is non editable
|
|
519 |
*/
|
|
520 |
|
|
521 |
void updateFocusTraversalKeys() {
|
|
522 |
/*
|
|
523 |
* Fix for 4514331 Non-editable JTextArea and similar
|
|
524 |
* should allow Tab to keyboard - accessibility
|
|
525 |
*/
|
|
526 |
EditorKit editorKit = getEditorKit(editor);
|
|
527 |
if ( editorKit != null
|
|
528 |
&& editorKit instanceof DefaultEditorKit) {
|
|
529 |
Set storedForwardTraversalKeys = editor.
|
|
530 |
getFocusTraversalKeys(KeyboardFocusManager.
|
|
531 |
FORWARD_TRAVERSAL_KEYS);
|
|
532 |
Set storedBackwardTraversalKeys = editor.
|
|
533 |
getFocusTraversalKeys(KeyboardFocusManager.
|
|
534 |
BACKWARD_TRAVERSAL_KEYS);
|
|
535 |
Set forwardTraversalKeys =
|
|
536 |
new HashSet(storedForwardTraversalKeys);
|
|
537 |
Set backwardTraversalKeys =
|
|
538 |
new HashSet(storedBackwardTraversalKeys);
|
|
539 |
if (editor.isEditable()) {
|
|
540 |
forwardTraversalKeys.
|
|
541 |
remove(KeyStroke.getKeyStroke(KeyEvent.VK_TAB, 0));
|
|
542 |
backwardTraversalKeys.
|
|
543 |
remove(KeyStroke.getKeyStroke(KeyEvent.VK_TAB,
|
|
544 |
InputEvent.SHIFT_MASK));
|
|
545 |
} else {
|
|
546 |
forwardTraversalKeys.add(KeyStroke.
|
|
547 |
getKeyStroke(KeyEvent.VK_TAB, 0));
|
|
548 |
backwardTraversalKeys.
|
|
549 |
add(KeyStroke.
|
|
550 |
getKeyStroke(KeyEvent.VK_TAB, InputEvent.SHIFT_MASK));
|
|
551 |
}
|
|
552 |
LookAndFeel.installProperty(editor,
|
|
553 |
"focusTraversalKeysForward",
|
|
554 |
forwardTraversalKeys);
|
|
555 |
LookAndFeel.installProperty(editor,
|
|
556 |
"focusTraversalKeysBackward",
|
|
557 |
backwardTraversalKeys);
|
|
558 |
}
|
|
559 |
|
|
560 |
}
|
|
561 |
|
|
562 |
/**
|
|
563 |
* As needed updates cursor for the target editor.
|
|
564 |
*/
|
|
565 |
private void updateCursor() {
|
|
566 |
if ((! editor.isCursorSet())
|
|
567 |
|| editor.getCursor() instanceof UIResource) {
|
|
568 |
Cursor cursor = (editor.isEditable()) ? textCursor : null;
|
|
569 |
editor.setCursor(cursor);
|
|
570 |
}
|
|
571 |
}
|
|
572 |
|
|
573 |
/**
|
|
574 |
* Returns the <code>TransferHandler</code> that will be installed if
|
|
575 |
* their isn't one installed on the <code>JTextComponent</code>.
|
|
576 |
*/
|
|
577 |
TransferHandler getTransferHandler() {
|
|
578 |
return defaultTransferHandler;
|
|
579 |
}
|
|
580 |
|
|
581 |
/**
|
|
582 |
* Fetch an action map to use.
|
|
583 |
*/
|
|
584 |
ActionMap getActionMap() {
|
|
585 |
String mapName = getPropertyPrefix() + ".actionMap";
|
|
586 |
ActionMap map = (ActionMap)UIManager.get(mapName);
|
|
587 |
|
|
588 |
if (map == null) {
|
|
589 |
map = createActionMap();
|
|
590 |
if (map != null) {
|
|
591 |
UIManager.getLookAndFeelDefaults().put(mapName, map);
|
|
592 |
}
|
|
593 |
}
|
|
594 |
ActionMap componentMap = new ActionMapUIResource();
|
|
595 |
componentMap.put("requestFocus", new FocusAction());
|
|
596 |
/*
|
|
597 |
* fix for bug 4515750
|
|
598 |
* JTextField & non-editable JTextArea bind return key - default btn not accessible
|
|
599 |
*
|
|
600 |
* Wrap the return action so that it is only enabled when the
|
|
601 |
* component is editable. This allows the default button to be
|
|
602 |
* processed when the text component has focus and isn't editable.
|
|
603 |
*
|
|
604 |
*/
|
|
605 |
if (getEditorKit(editor) instanceof DefaultEditorKit) {
|
|
606 |
if (map != null) {
|
|
607 |
Object obj = map.get(DefaultEditorKit.insertBreakAction);
|
|
608 |
if (obj != null
|
|
609 |
&& obj instanceof DefaultEditorKit.InsertBreakAction) {
|
|
610 |
Action action = new TextActionWrapper((TextAction)obj);
|
|
611 |
componentMap.put(action.getValue(Action.NAME),action);
|
|
612 |
}
|
|
613 |
}
|
|
614 |
}
|
|
615 |
if (map != null) {
|
|
616 |
componentMap.setParent(map);
|
|
617 |
}
|
|
618 |
return componentMap;
|
|
619 |
}
|
|
620 |
|
|
621 |
/**
|
|
622 |
* Create a default action map. This is basically the
|
|
623 |
* set of actions found exported by the component.
|
|
624 |
*/
|
|
625 |
ActionMap createActionMap() {
|
|
626 |
ActionMap map = new ActionMapUIResource();
|
|
627 |
Action[] actions = editor.getActions();
|
|
628 |
//System.out.println("building map for UI: " + getPropertyPrefix());
|
|
629 |
int n = actions.length;
|
|
630 |
for (int i = 0; i < n; i++) {
|
|
631 |
Action a = actions[i];
|
|
632 |
map.put(a.getValue(Action.NAME), a);
|
|
633 |
//System.out.println(" " + a.getValue(Action.NAME));
|
|
634 |
}
|
|
635 |
map.put(TransferHandler.getCutAction().getValue(Action.NAME),
|
|
636 |
TransferHandler.getCutAction());
|
|
637 |
map.put(TransferHandler.getCopyAction().getValue(Action.NAME),
|
|
638 |
TransferHandler.getCopyAction());
|
|
639 |
map.put(TransferHandler.getPasteAction().getValue(Action.NAME),
|
|
640 |
TransferHandler.getPasteAction());
|
|
641 |
return map;
|
|
642 |
}
|
|
643 |
|
|
644 |
protected void uninstallKeyboardActions() {
|
|
645 |
editor.setKeymap(null);
|
|
646 |
SwingUtilities.replaceUIInputMap(editor, JComponent.
|
|
647 |
WHEN_IN_FOCUSED_WINDOW, null);
|
|
648 |
SwingUtilities.replaceUIActionMap(editor, null);
|
|
649 |
}
|
|
650 |
|
|
651 |
/**
|
|
652 |
* Paints a background for the view. This will only be
|
|
653 |
* called if isOpaque() on the associated component is
|
|
654 |
* true. The default is to paint the background color
|
|
655 |
* of the component.
|
|
656 |
*
|
|
657 |
* @param g the graphics context
|
|
658 |
*/
|
|
659 |
protected void paintBackground(Graphics g) {
|
|
660 |
g.setColor(editor.getBackground());
|
|
661 |
g.fillRect(0, 0, editor.getWidth(), editor.getHeight());
|
|
662 |
}
|
|
663 |
|
|
664 |
/**
|
|
665 |
* Fetches the text component associated with this
|
|
666 |
* UI implementation. This will be null until
|
|
667 |
* the ui has been installed.
|
|
668 |
*
|
|
669 |
* @return the editor component
|
|
670 |
*/
|
|
671 |
protected final JTextComponent getComponent() {
|
|
672 |
return editor;
|
|
673 |
}
|
|
674 |
|
|
675 |
/**
|
|
676 |
* Flags model changes.
|
|
677 |
* This is called whenever the model has changed.
|
|
678 |
* It is implemented to rebuild the view hierarchy
|
|
679 |
* to represent the default root element of the
|
|
680 |
* associated model.
|
|
681 |
*/
|
|
682 |
protected void modelChanged() {
|
|
683 |
// create a view hierarchy
|
|
684 |
ViewFactory f = rootView.getViewFactory();
|
|
685 |
Document doc = editor.getDocument();
|
|
686 |
Element elem = doc.getDefaultRootElement();
|
|
687 |
setView(f.create(elem));
|
|
688 |
}
|
|
689 |
|
|
690 |
/**
|
|
691 |
* Sets the current root of the view hierarchy and calls invalidate().
|
|
692 |
* If there were any child components, they will be removed (i.e.
|
|
693 |
* there are assumed to have come from components embedded in views).
|
|
694 |
*
|
|
695 |
* @param v the root view
|
|
696 |
*/
|
|
697 |
protected final void setView(View v) {
|
|
698 |
rootView.setView(v);
|
|
699 |
painted = false;
|
|
700 |
editor.revalidate();
|
|
701 |
editor.repaint();
|
|
702 |
}
|
|
703 |
|
|
704 |
/**
|
|
705 |
* Paints the interface safely with a guarantee that
|
|
706 |
* the model won't change from the view of this thread.
|
|
707 |
* This does the following things, rendering from
|
|
708 |
* back to front.
|
|
709 |
* <ol>
|
|
710 |
* <li>
|
|
711 |
* If the component is marked as opaque, the background
|
|
712 |
* is painted in the current background color of the
|
|
713 |
* component.
|
|
714 |
* <li>
|
|
715 |
* The highlights (if any) are painted.
|
|
716 |
* <li>
|
|
717 |
* The view hierarchy is painted.
|
|
718 |
* <li>
|
|
719 |
* The caret is painted.
|
|
720 |
* </ol>
|
|
721 |
*
|
|
722 |
* @param g the graphics context
|
|
723 |
*/
|
|
724 |
protected void paintSafely(Graphics g) {
|
|
725 |
painted = true;
|
|
726 |
Highlighter highlighter = editor.getHighlighter();
|
|
727 |
Caret caret = editor.getCaret();
|
|
728 |
|
|
729 |
// paint the background
|
|
730 |
if (editor.isOpaque()) {
|
|
731 |
paintBackground(g);
|
|
732 |
}
|
|
733 |
|
|
734 |
// paint the highlights
|
|
735 |
if (highlighter != null) {
|
|
736 |
highlighter.paint(g);
|
|
737 |
}
|
|
738 |
|
|
739 |
// paint the view hierarchy
|
|
740 |
Rectangle alloc = getVisibleEditorRect();
|
|
741 |
if (alloc != null) {
|
|
742 |
rootView.paint(g, alloc);
|
|
743 |
}
|
|
744 |
|
|
745 |
// paint the caret
|
|
746 |
if (caret != null) {
|
|
747 |
caret.paint(g);
|
|
748 |
}
|
|
749 |
|
|
750 |
if (dropCaret != null) {
|
|
751 |
dropCaret.paint(g);
|
|
752 |
}
|
|
753 |
}
|
|
754 |
|
|
755 |
// --- ComponentUI methods --------------------------------------------
|
|
756 |
|
|
757 |
/**
|
|
758 |
* Installs the UI for a component. This does the following
|
|
759 |
* things.
|
|
760 |
* <ol>
|
|
761 |
* <li>
|
|
762 |
* Set the associated component to opaque (can be changed
|
|
763 |
* easily by a subclass or on JTextComponent directly),
|
|
764 |
* which is the most common case. This will cause the
|
|
765 |
* component's background color to be painted.
|
|
766 |
* <li>
|
|
767 |
* Install the default caret and highlighter into the
|
|
768 |
* associated component.
|
|
769 |
* <li>
|
|
770 |
* Attach to the editor and model. If there is no
|
|
771 |
* model, a default one is created.
|
|
772 |
* <li>
|
|
773 |
* create the view factory and the view hierarchy used
|
|
774 |
* to represent the model.
|
|
775 |
* </ol>
|
|
776 |
*
|
|
777 |
* @param c the editor component
|
|
778 |
* @see ComponentUI#installUI
|
|
779 |
*/
|
|
780 |
public void installUI(JComponent c) {
|
|
781 |
if (c instanceof JTextComponent) {
|
|
782 |
editor = (JTextComponent) c;
|
|
783 |
|
|
784 |
// install defaults
|
|
785 |
installDefaults();
|
|
786 |
installDefaults2();
|
|
787 |
|
|
788 |
// common case is background painted... this can
|
|
789 |
// easily be changed by subclasses or from outside
|
|
790 |
// of the component.
|
|
791 |
LookAndFeel.installProperty(editor, "opaque", Boolean.TRUE);
|
|
792 |
LookAndFeel.installProperty(editor, "autoscrolls", Boolean.TRUE);
|
|
793 |
|
|
794 |
// attach to the model and editor
|
|
795 |
editor.addPropertyChangeListener(updateHandler);
|
|
796 |
Document doc = editor.getDocument();
|
|
797 |
if (doc == null) {
|
|
798 |
// no model, create a default one. This will
|
|
799 |
// fire a notification to the updateHandler
|
|
800 |
// which takes care of the rest.
|
|
801 |
editor.setDocument(getEditorKit(editor).createDefaultDocument());
|
|
802 |
} else {
|
|
803 |
doc.addDocumentListener(updateHandler);
|
|
804 |
modelChanged();
|
|
805 |
}
|
|
806 |
|
|
807 |
// install keymap
|
|
808 |
installListeners();
|
|
809 |
installKeyboardActions();
|
|
810 |
|
|
811 |
LayoutManager oldLayout = editor.getLayout();
|
|
812 |
if ((oldLayout == null) || (oldLayout instanceof UIResource)) {
|
|
813 |
// by default, use default LayoutManger implementation that
|
|
814 |
// will position the components associated with a View object.
|
|
815 |
editor.setLayout(updateHandler);
|
|
816 |
}
|
|
817 |
|
|
818 |
updateBackground(editor);
|
|
819 |
} else {
|
|
820 |
throw new Error("TextUI needs JTextComponent");
|
|
821 |
}
|
|
822 |
}
|
|
823 |
|
|
824 |
/**
|
|
825 |
* Deinstalls the UI for a component. This removes the listeners,
|
|
826 |
* uninstalls the highlighter, removes views, and nulls out the keymap.
|
|
827 |
*
|
|
828 |
* @param c the editor component
|
|
829 |
* @see ComponentUI#uninstallUI
|
|
830 |
*/
|
|
831 |
public void uninstallUI(JComponent c) {
|
|
832 |
// detach from the model
|
|
833 |
editor.removePropertyChangeListener(updateHandler);
|
|
834 |
editor.getDocument().removeDocumentListener(updateHandler);
|
|
835 |
|
|
836 |
// view part
|
|
837 |
painted = false;
|
|
838 |
uninstallDefaults();
|
|
839 |
rootView.setView(null);
|
|
840 |
c.removeAll();
|
|
841 |
LayoutManager lm = c.getLayout();
|
|
842 |
if (lm instanceof UIResource) {
|
|
843 |
c.setLayout(null);
|
|
844 |
}
|
|
845 |
|
|
846 |
// controller part
|
|
847 |
uninstallKeyboardActions();
|
|
848 |
uninstallListeners();
|
|
849 |
|
|
850 |
editor = null;
|
|
851 |
}
|
|
852 |
|
|
853 |
/**
|
|
854 |
* Superclass paints background in an uncontrollable way
|
|
855 |
* (i.e. one might want an image tiled into the background).
|
|
856 |
* To prevent this from happening twice, this method is
|
|
857 |
* reimplemented to simply paint.
|
|
858 |
* <p>
|
|
859 |
* <em>NOTE:</em> Superclass is also not thread-safe in
|
|
860 |
* it's rendering of the background, although that's not
|
|
861 |
* an issue with the default rendering.
|
|
862 |
*/
|
|
863 |
public void update(Graphics g, JComponent c) {
|
|
864 |
paint(g, c);
|
|
865 |
}
|
|
866 |
|
|
867 |
/**
|
|
868 |
* Paints the interface. This is routed to the
|
|
869 |
* paintSafely method under the guarantee that
|
|
870 |
* the model won't change from the view of this thread
|
|
871 |
* while it's rendering (if the associated model is
|
|
872 |
* derived from AbstractDocument). This enables the
|
|
873 |
* model to potentially be updated asynchronously.
|
|
874 |
*
|
|
875 |
* @param g the graphics context
|
|
876 |
* @param c the editor component
|
|
877 |
*/
|
|
878 |
public final void paint(Graphics g, JComponent c) {
|
|
879 |
if ((rootView.getViewCount() > 0) && (rootView.getView(0) != null)) {
|
|
880 |
Document doc = editor.getDocument();
|
|
881 |
if (doc instanceof AbstractDocument) {
|
|
882 |
((AbstractDocument)doc).readLock();
|
|
883 |
}
|
|
884 |
try {
|
|
885 |
paintSafely(g);
|
|
886 |
} finally {
|
|
887 |
if (doc instanceof AbstractDocument) {
|
|
888 |
((AbstractDocument)doc).readUnlock();
|
|
889 |
}
|
|
890 |
}
|
|
891 |
}
|
|
892 |
}
|
|
893 |
|
|
894 |
/**
|
|
895 |
* Gets the preferred size for the editor component. If the component
|
|
896 |
* has been given a size prior to receiving this request, it will
|
|
897 |
* set the size of the view hierarchy to reflect the size of the component
|
|
898 |
* before requesting the preferred size of the view hierarchy. This
|
|
899 |
* allows formatted views to format to the current component size before
|
|
900 |
* answering the request. Other views don't care about currently formatted
|
|
901 |
* size and give the same answer either way.
|
|
902 |
*
|
|
903 |
* @param c the editor component
|
|
904 |
* @return the size
|
|
905 |
*/
|
|
906 |
public Dimension getPreferredSize(JComponent c) {
|
|
907 |
Document doc = editor.getDocument();
|
|
908 |
Insets i = c.getInsets();
|
|
909 |
Dimension d = c.getSize();
|
|
910 |
|
|
911 |
if (doc instanceof AbstractDocument) {
|
|
912 |
((AbstractDocument)doc).readLock();
|
|
913 |
}
|
|
914 |
try {
|
|
915 |
if ((d.width > (i.left + i.right)) && (d.height > (i.top + i.bottom))) {
|
|
916 |
rootView.setSize(d.width - i.left - i.right, d.height - i.top - i.bottom);
|
|
917 |
}
|
|
918 |
else if (d.width == 0 && d.height == 0) {
|
|
919 |
// Probably haven't been layed out yet, force some sort of
|
|
920 |
// initial sizing.
|
|
921 |
rootView.setSize(Integer.MAX_VALUE, Integer.MAX_VALUE);
|
|
922 |
}
|
|
923 |
d.width = (int) Math.min((long) rootView.getPreferredSpan(View.X_AXIS) +
|
|
924 |
(long) i.left + (long) i.right, Integer.MAX_VALUE);
|
|
925 |
d.height = (int) Math.min((long) rootView.getPreferredSpan(View.Y_AXIS) +
|
|
926 |
(long) i.top + (long) i.bottom, Integer.MAX_VALUE);
|
|
927 |
} finally {
|
|
928 |
if (doc instanceof AbstractDocument) {
|
|
929 |
((AbstractDocument)doc).readUnlock();
|
|
930 |
}
|
|
931 |
}
|
|
932 |
return d;
|
|
933 |
}
|
|
934 |
|
|
935 |
/**
|
|
936 |
* Gets the minimum size for the editor component.
|
|
937 |
*
|
|
938 |
* @param c the editor component
|
|
939 |
* @return the size
|
|
940 |
*/
|
|
941 |
public Dimension getMinimumSize(JComponent c) {
|
|
942 |
Document doc = editor.getDocument();
|
|
943 |
Insets i = c.getInsets();
|
|
944 |
Dimension d = new Dimension();
|
|
945 |
if (doc instanceof AbstractDocument) {
|
|
946 |
((AbstractDocument)doc).readLock();
|
|
947 |
}
|
|
948 |
try {
|
|
949 |
d.width = (int) rootView.getMinimumSpan(View.X_AXIS) + i.left + i.right;
|
|
950 |
d.height = (int) rootView.getMinimumSpan(View.Y_AXIS) + i.top + i.bottom;
|
|
951 |
} finally {
|
|
952 |
if (doc instanceof AbstractDocument) {
|
|
953 |
((AbstractDocument)doc).readUnlock();
|
|
954 |
}
|
|
955 |
}
|
|
956 |
return d;
|
|
957 |
}
|
|
958 |
|
|
959 |
/**
|
|
960 |
* Gets the maximum size for the editor component.
|
|
961 |
*
|
|
962 |
* @param c the editor component
|
|
963 |
* @return the size
|
|
964 |
*/
|
|
965 |
public Dimension getMaximumSize(JComponent c) {
|
|
966 |
Document doc = editor.getDocument();
|
|
967 |
Insets i = c.getInsets();
|
|
968 |
Dimension d = new Dimension();
|
|
969 |
if (doc instanceof AbstractDocument) {
|
|
970 |
((AbstractDocument)doc).readLock();
|
|
971 |
}
|
|
972 |
try {
|
|
973 |
d.width = (int) Math.min((long) rootView.getMaximumSpan(View.X_AXIS) +
|
|
974 |
(long) i.left + (long) i.right, Integer.MAX_VALUE);
|
|
975 |
d.height = (int) Math.min((long) rootView.getMaximumSpan(View.Y_AXIS) +
|
|
976 |
(long) i.top + (long) i.bottom, Integer.MAX_VALUE);
|
|
977 |
} finally {
|
|
978 |
if (doc instanceof AbstractDocument) {
|
|
979 |
((AbstractDocument)doc).readUnlock();
|
|
980 |
}
|
|
981 |
}
|
|
982 |
return d;
|
|
983 |
}
|
|
984 |
|
|
985 |
// ---- TextUI methods -------------------------------------------
|
|
986 |
|
|
987 |
|
|
988 |
/**
|
|
989 |
* Gets the allocation to give the root View. Due
|
|
990 |
* to an unfortunate set of historical events this
|
|
991 |
* method is inappropriately named. The Rectangle
|
|
992 |
* returned has nothing to do with visibility.
|
|
993 |
* The component must have a non-zero positive size for
|
|
994 |
* this translation to be computed.
|
|
995 |
*
|
|
996 |
* @return the bounding box for the root view
|
|
997 |
*/
|
|
998 |
protected Rectangle getVisibleEditorRect() {
|
|
999 |
Rectangle alloc = editor.getBounds();
|
|
1000 |
if ((alloc.width > 0) && (alloc.height > 0)) {
|
|
1001 |
alloc.x = alloc.y = 0;
|
|
1002 |
Insets insets = editor.getInsets();
|
|
1003 |
alloc.x += insets.left;
|
|
1004 |
alloc.y += insets.top;
|
|
1005 |
alloc.width -= insets.left + insets.right;
|
|
1006 |
alloc.height -= insets.top + insets.bottom;
|
|
1007 |
return alloc;
|
|
1008 |
}
|
|
1009 |
return null;
|
|
1010 |
}
|
|
1011 |
|
|
1012 |
/**
|
|
1013 |
* Converts the given location in the model to a place in
|
|
1014 |
* the view coordinate system.
|
|
1015 |
* The component must have a non-zero positive size for
|
|
1016 |
* this translation to be computed.
|
|
1017 |
*
|
|
1018 |
* @param tc the text component for which this UI is installed
|
|
1019 |
* @param pos the local location in the model to translate >= 0
|
|
1020 |
* @return the coordinates as a rectangle, null if the model is not painted
|
|
1021 |
* @exception BadLocationException if the given position does not
|
|
1022 |
* represent a valid location in the associated document
|
|
1023 |
* @see TextUI#modelToView
|
|
1024 |
*/
|
|
1025 |
public Rectangle modelToView(JTextComponent tc, int pos) throws BadLocationException {
|
|
1026 |
return modelToView(tc, pos, Position.Bias.Forward);
|
|
1027 |
}
|
|
1028 |
|
|
1029 |
/**
|
|
1030 |
* Converts the given location in the model to a place in
|
|
1031 |
* the view coordinate system.
|
|
1032 |
* The component must have a non-zero positive size for
|
|
1033 |
* this translation to be computed.
|
|
1034 |
*
|
|
1035 |
* @param tc the text component for which this UI is installed
|
|
1036 |
* @param pos the local location in the model to translate >= 0
|
|
1037 |
* @return the coordinates as a rectangle, null if the model is not painted
|
|
1038 |
* @exception BadLocationException if the given position does not
|
|
1039 |
* represent a valid location in the associated document
|
|
1040 |
* @see TextUI#modelToView
|
|
1041 |
*/
|
|
1042 |
public Rectangle modelToView(JTextComponent tc, int pos, Position.Bias bias) throws BadLocationException {
|
|
1043 |
Document doc = editor.getDocument();
|
|
1044 |
if (doc instanceof AbstractDocument) {
|
|
1045 |
((AbstractDocument)doc).readLock();
|
|
1046 |
}
|
|
1047 |
try {
|
|
1048 |
Rectangle alloc = getVisibleEditorRect();
|
|
1049 |
if (alloc != null) {
|
|
1050 |
rootView.setSize(alloc.width, alloc.height);
|
|
1051 |
Shape s = rootView.modelToView(pos, alloc, bias);
|
|
1052 |
if (s != null) {
|
|
1053 |
return s.getBounds();
|
|
1054 |
}
|
|
1055 |
}
|
|
1056 |
} finally {
|
|
1057 |
if (doc instanceof AbstractDocument) {
|
|
1058 |
((AbstractDocument)doc).readUnlock();
|
|
1059 |
}
|
|
1060 |
}
|
|
1061 |
return null;
|
|
1062 |
}
|
|
1063 |
|
|
1064 |
/**
|
|
1065 |
* Converts the given place in the view coordinate system
|
|
1066 |
* to the nearest representative location in the model.
|
|
1067 |
* The component must have a non-zero positive size for
|
|
1068 |
* this translation to be computed.
|
|
1069 |
*
|
|
1070 |
* @param tc the text component for which this UI is installed
|
|
1071 |
* @param pt the location in the view to translate. This
|
|
1072 |
* should be in the same coordinate system as the mouse events.
|
|
1073 |
* @return the offset from the start of the document >= 0,
|
|
1074 |
* -1 if not painted
|
|
1075 |
* @see TextUI#viewToModel
|
|
1076 |
*/
|
|
1077 |
public int viewToModel(JTextComponent tc, Point pt) {
|
|
1078 |
return viewToModel(tc, pt, discardBias);
|
|
1079 |
}
|
|
1080 |
|
|
1081 |
/**
|
|
1082 |
* Converts the given place in the view coordinate system
|
|
1083 |
* to the nearest representative location in the model.
|
|
1084 |
* The component must have a non-zero positive size for
|
|
1085 |
* this translation to be computed.
|
|
1086 |
*
|
|
1087 |
* @param tc the text component for which this UI is installed
|
|
1088 |
* @param pt the location in the view to translate. This
|
|
1089 |
* should be in the same coordinate system as the mouse events.
|
|
1090 |
* @return the offset from the start of the document >= 0,
|
|
1091 |
* -1 if the component doesn't yet have a positive size.
|
|
1092 |
* @see TextUI#viewToModel
|
|
1093 |
*/
|
|
1094 |
public int viewToModel(JTextComponent tc, Point pt,
|
|
1095 |
Position.Bias[] biasReturn) {
|
|
1096 |
int offs = -1;
|
|
1097 |
Document doc = editor.getDocument();
|
|
1098 |
if (doc instanceof AbstractDocument) {
|
|
1099 |
((AbstractDocument)doc).readLock();
|
|
1100 |
}
|
|
1101 |
try {
|
|
1102 |
Rectangle alloc = getVisibleEditorRect();
|
|
1103 |
if (alloc != null) {
|
|
1104 |
rootView.setSize(alloc.width, alloc.height);
|
|
1105 |
offs = rootView.viewToModel(pt.x, pt.y, alloc, biasReturn);
|
|
1106 |
}
|
|
1107 |
} finally {
|
|
1108 |
if (doc instanceof AbstractDocument) {
|
|
1109 |
((AbstractDocument)doc).readUnlock();
|
|
1110 |
}
|
|
1111 |
}
|
|
1112 |
return offs;
|
|
1113 |
}
|
|
1114 |
|
|
1115 |
/**
|
|
1116 |
* {@inheritDoc}
|
|
1117 |
*/
|
|
1118 |
public int getNextVisualPositionFrom(JTextComponent t, int pos,
|
|
1119 |
Position.Bias b, int direction, Position.Bias[] biasRet)
|
|
1120 |
throws BadLocationException{
|
|
1121 |
Document doc = editor.getDocument();
|
|
1122 |
if (doc instanceof AbstractDocument) {
|
|
1123 |
((AbstractDocument)doc).readLock();
|
|
1124 |
}
|
|
1125 |
try {
|
|
1126 |
if (painted) {
|
|
1127 |
Rectangle alloc = getVisibleEditorRect();
|
|
1128 |
if (alloc != null) {
|
|
1129 |
rootView.setSize(alloc.width, alloc.height);
|
|
1130 |
}
|
|
1131 |
return rootView.getNextVisualPositionFrom(pos, b, alloc, direction,
|
|
1132 |
biasRet);
|
|
1133 |
}
|
|
1134 |
} finally {
|
|
1135 |
if (doc instanceof AbstractDocument) {
|
|
1136 |
((AbstractDocument)doc).readUnlock();
|
|
1137 |
}
|
|
1138 |
}
|
|
1139 |
return -1;
|
|
1140 |
}
|
|
1141 |
|
|
1142 |
/**
|
|
1143 |
* Causes the portion of the view responsible for the
|
|
1144 |
* given part of the model to be repainted. Does nothing if
|
|
1145 |
* the view is not currently painted.
|
|
1146 |
*
|
|
1147 |
* @param tc the text component for which this UI is installed
|
|
1148 |
* @param p0 the beginning of the range >= 0
|
|
1149 |
* @param p1 the end of the range >= p0
|
|
1150 |
* @see TextUI#damageRange
|
|
1151 |
*/
|
|
1152 |
public void damageRange(JTextComponent tc, int p0, int p1) {
|
|
1153 |
damageRange(tc, p0, p1, Position.Bias.Forward, Position.Bias.Backward);
|
|
1154 |
}
|
|
1155 |
|
|
1156 |
/**
|
|
1157 |
* Causes the portion of the view responsible for the
|
|
1158 |
* given part of the model to be repainted.
|
|
1159 |
*
|
|
1160 |
* @param p0 the beginning of the range >= 0
|
|
1161 |
* @param p1 the end of the range >= p0
|
|
1162 |
*/
|
|
1163 |
public void damageRange(JTextComponent t, int p0, int p1,
|
|
1164 |
Position.Bias p0Bias, Position.Bias p1Bias) {
|
|
1165 |
if (painted) {
|
|
1166 |
Rectangle alloc = getVisibleEditorRect();
|
|
1167 |
if (alloc != null) {
|
|
1168 |
Document doc = t.getDocument();
|
|
1169 |
if (doc instanceof AbstractDocument) {
|
|
1170 |
((AbstractDocument)doc).readLock();
|
|
1171 |
}
|
|
1172 |
try {
|
|
1173 |
rootView.setSize(alloc.width, alloc.height);
|
|
1174 |
Shape toDamage = rootView.modelToView(p0, p0Bias,
|
|
1175 |
p1, p1Bias, alloc);
|
|
1176 |
Rectangle rect = (toDamage instanceof Rectangle) ?
|
|
1177 |
(Rectangle)toDamage : toDamage.getBounds();
|
|
1178 |
editor.repaint(rect.x, rect.y, rect.width, rect.height);
|
|
1179 |
} catch (BadLocationException e) {
|
|
1180 |
} finally {
|
|
1181 |
if (doc instanceof AbstractDocument) {
|
|
1182 |
((AbstractDocument)doc).readUnlock();
|
|
1183 |
}
|
|
1184 |
}
|
|
1185 |
}
|
|
1186 |
}
|
|
1187 |
}
|
|
1188 |
|
|
1189 |
/**
|
|
1190 |
* Fetches the EditorKit for the UI.
|
|
1191 |
*
|
|
1192 |
* @param tc the text component for which this UI is installed
|
|
1193 |
* @return the editor capabilities
|
|
1194 |
* @see TextUI#getEditorKit
|
|
1195 |
*/
|
|
1196 |
public EditorKit getEditorKit(JTextComponent tc) {
|
|
1197 |
return defaultKit;
|
|
1198 |
}
|
|
1199 |
|
|
1200 |
/**
|
|
1201 |
* Fetches a View with the allocation of the associated
|
|
1202 |
* text component (i.e. the root of the hierarchy) that
|
|
1203 |
* can be traversed to determine how the model is being
|
|
1204 |
* represented spatially.
|
|
1205 |
* <p>
|
|
1206 |
* <font color=red><b>NOTE:</b>The View hierarchy can
|
|
1207 |
* be traversed from the root view, and other things
|
|
1208 |
* can be done as well. Things done in this way cannot
|
|
1209 |
* be protected like simple method calls through the TextUI.
|
|
1210 |
* Therefore, proper operation in the presence of concurrency
|
|
1211 |
* must be arranged by any logic that calls this method!
|
|
1212 |
* </font>
|
|
1213 |
*
|
|
1214 |
* @param tc the text component for which this UI is installed
|
|
1215 |
* @return the view
|
|
1216 |
* @see TextUI#getRootView
|
|
1217 |
*/
|
|
1218 |
public View getRootView(JTextComponent tc) {
|
|
1219 |
return rootView;
|
|
1220 |
}
|
|
1221 |
|
|
1222 |
|
|
1223 |
/**
|
|
1224 |
* Returns the string to be used as the tooltip at the passed in location.
|
|
1225 |
* This forwards the method onto the root View.
|
|
1226 |
*
|
|
1227 |
* @see javax.swing.text.JTextComponent#getToolTipText
|
|
1228 |
* @see javax.swing.text.View#getToolTipText
|
|
1229 |
* @since 1.4
|
|
1230 |
*/
|
|
1231 |
public String getToolTipText(JTextComponent t, Point pt) {
|
|
1232 |
if (!painted) {
|
|
1233 |
return null;
|
|
1234 |
}
|
|
1235 |
Document doc = editor.getDocument();
|
|
1236 |
String tt = null;
|
|
1237 |
Rectangle alloc = getVisibleEditorRect();
|
|
1238 |
|
|
1239 |
if (alloc != null) {
|
|
1240 |
if (doc instanceof AbstractDocument) {
|
|
1241 |
((AbstractDocument)doc).readLock();
|
|
1242 |
}
|
|
1243 |
try {
|
|
1244 |
tt = rootView.getToolTipText(pt.x, pt.y, alloc);
|
|
1245 |
} finally {
|
|
1246 |
if (doc instanceof AbstractDocument) {
|
|
1247 |
((AbstractDocument)doc).readUnlock();
|
|
1248 |
}
|
|
1249 |
}
|
|
1250 |
}
|
|
1251 |
return tt;
|
|
1252 |
}
|
|
1253 |
|
|
1254 |
// --- ViewFactory methods ------------------------------
|
|
1255 |
|
|
1256 |
/**
|
|
1257 |
* Creates a view for an element.
|
|
1258 |
* If a subclass wishes to directly implement the factory
|
|
1259 |
* producing the view(s), it should reimplement this
|
|
1260 |
* method. By default it simply returns null indicating
|
|
1261 |
* it is unable to represent the element.
|
|
1262 |
*
|
|
1263 |
* @param elem the element
|
|
1264 |
* @return the view
|
|
1265 |
*/
|
|
1266 |
public View create(Element elem) {
|
|
1267 |
return null;
|
|
1268 |
}
|
|
1269 |
|
|
1270 |
/**
|
|
1271 |
* Creates a view for an element.
|
|
1272 |
* If a subclass wishes to directly implement the factory
|
|
1273 |
* producing the view(s), it should reimplement this
|
|
1274 |
* method. By default it simply returns null indicating
|
|
1275 |
* it is unable to represent the part of the element.
|
|
1276 |
*
|
|
1277 |
* @param elem the element
|
|
1278 |
* @param p0 the starting offset >= 0
|
|
1279 |
* @param p1 the ending offset >= p0
|
|
1280 |
* @return the view
|
|
1281 |
*/
|
|
1282 |
public View create(Element elem, int p0, int p1) {
|
|
1283 |
return null;
|
|
1284 |
}
|
|
1285 |
|
|
1286 |
public static class BasicCaret extends DefaultCaret implements UIResource {}
|
|
1287 |
|
|
1288 |
public static class BasicHighlighter extends DefaultHighlighter implements UIResource {}
|
|
1289 |
|
|
1290 |
static class BasicCursor extends Cursor implements UIResource {
|
|
1291 |
BasicCursor(int type) {
|
|
1292 |
super(type);
|
|
1293 |
}
|
|
1294 |
|
|
1295 |
BasicCursor(String name) {
|
|
1296 |
super(name);
|
|
1297 |
}
|
|
1298 |
}
|
|
1299 |
|
|
1300 |
private static BasicCursor textCursor = new BasicCursor(Cursor.TEXT_CURSOR);
|
|
1301 |
// ----- member variables ---------------------------------------
|
|
1302 |
|
|
1303 |
private static final EditorKit defaultKit = new DefaultEditorKit();
|
|
1304 |
transient JTextComponent editor;
|
|
1305 |
transient boolean painted;
|
|
1306 |
transient RootView rootView = new RootView();
|
|
1307 |
transient UpdateHandler updateHandler = new UpdateHandler();
|
|
1308 |
private static final TransferHandler defaultTransferHandler = new TextTransferHandler();
|
|
1309 |
private final DragListener dragListener = getDragListener();
|
|
1310 |
private static final Position.Bias[] discardBias = new Position.Bias[1];
|
|
1311 |
private DefaultCaret dropCaret;
|
|
1312 |
|
|
1313 |
/**
|
|
1314 |
* Root view that acts as a gateway between the component
|
|
1315 |
* and the View hierarchy.
|
|
1316 |
*/
|
|
1317 |
class RootView extends View {
|
|
1318 |
|
|
1319 |
RootView() {
|
|
1320 |
super(null);
|
|
1321 |
}
|
|
1322 |
|
|
1323 |
void setView(View v) {
|
|
1324 |
View oldView = view;
|
|
1325 |
view = null;
|
|
1326 |
if (oldView != null) {
|
|
1327 |
// get rid of back reference so that the old
|
|
1328 |
// hierarchy can be garbage collected.
|
|
1329 |
oldView.setParent(null);
|
|
1330 |
}
|
|
1331 |
if (v != null) {
|
|
1332 |
v.setParent(this);
|
|
1333 |
}
|
|
1334 |
view = v;
|
|
1335 |
}
|
|
1336 |
|
|
1337 |
/**
|
|
1338 |
* Fetches the attributes to use when rendering. At the root
|
|
1339 |
* level there are no attributes. If an attribute is resolved
|
|
1340 |
* up the view hierarchy this is the end of the line.
|
|
1341 |
*/
|
|
1342 |
public AttributeSet getAttributes() {
|
|
1343 |
return null;
|
|
1344 |
}
|
|
1345 |
|
|
1346 |
/**
|
|
1347 |
* Determines the preferred span for this view along an axis.
|
|
1348 |
*
|
|
1349 |
* @param axis may be either X_AXIS or Y_AXIS
|
|
1350 |
* @return the span the view would like to be rendered into.
|
|
1351 |
* Typically the view is told to render into the span
|
|
1352 |
* that is returned, although there is no guarantee.
|
|
1353 |
* The parent may choose to resize or break the view.
|
|
1354 |
*/
|
|
1355 |
public float getPreferredSpan(int axis) {
|
|
1356 |
if (view != null) {
|
|
1357 |
return view.getPreferredSpan(axis);
|
|
1358 |
}
|
|
1359 |
return 10;
|
|
1360 |
}
|
|
1361 |
|
|
1362 |
/**
|
|
1363 |
* Determines the minimum span for this view along an axis.
|
|
1364 |
*
|
|
1365 |
* @param axis may be either X_AXIS or Y_AXIS
|
|
1366 |
* @return the span the view would like to be rendered into.
|
|
1367 |
* Typically the view is told to render into the span
|
|
1368 |
* that is returned, although there is no guarantee.
|
|
1369 |
* The parent may choose to resize or break the view.
|
|
1370 |
*/
|
|
1371 |
public float getMinimumSpan(int axis) {
|
|
1372 |
if (view != null) {
|
|
1373 |
return view.getMinimumSpan(axis);
|
|
1374 |
}
|
|
1375 |
return 10;
|
|
1376 |
}
|
|
1377 |
|
|
1378 |
/**
|
|
1379 |
* Determines the maximum span for this view along an axis.
|
|
1380 |
*
|
|
1381 |
* @param axis may be either X_AXIS or Y_AXIS
|
|
1382 |
* @return the span the view would like to be rendered into.
|
|
1383 |
* Typically the view is told to render into the span
|
|
1384 |
* that is returned, although there is no guarantee.
|
|
1385 |
* The parent may choose to resize or break the view.
|
|
1386 |
*/
|
|
1387 |
public float getMaximumSpan(int axis) {
|
|
1388 |
return Integer.MAX_VALUE;
|
|
1389 |
}
|
|
1390 |
|
|
1391 |
/**
|
|
1392 |
* Specifies that a preference has changed.
|
|
1393 |
* Child views can call this on the parent to indicate that
|
|
1394 |
* the preference has changed. The root view routes this to
|
|
1395 |
* invalidate on the hosting component.
|
|
1396 |
* <p>
|
|
1397 |
* This can be called on a different thread from the
|
|
1398 |
* event dispatching thread and is basically unsafe to
|
|
1399 |
* propagate into the component. To make this safe,
|
|
1400 |
* the operation is transferred over to the event dispatching
|
|
1401 |
* thread for completion. It is a design goal that all view
|
|
1402 |
* methods be safe to call without concern for concurrency,
|
|
1403 |
* and this behavior helps make that true.
|
|
1404 |
*
|
|
1405 |
* @param child the child view
|
|
1406 |
* @param width true if the width preference has changed
|
|
1407 |
* @param height true if the height preference has changed
|
|
1408 |
*/
|
|
1409 |
public void preferenceChanged(View child, boolean width, boolean height) {
|
|
1410 |
editor.revalidate();
|
|
1411 |
}
|
|
1412 |
|
|
1413 |
/**
|
|
1414 |
* Determines the desired alignment for this view along an axis.
|
|
1415 |
*
|
|
1416 |
* @param axis may be either X_AXIS or Y_AXIS
|
|
1417 |
* @return the desired alignment, where 0.0 indicates the origin
|
|
1418 |
* and 1.0 the full span away from the origin
|
|
1419 |
*/
|
|
1420 |
public float getAlignment(int axis) {
|
|
1421 |
if (view != null) {
|
|
1422 |
return view.getAlignment(axis);
|
|
1423 |
}
|
|
1424 |
return 0;
|
|
1425 |
}
|
|
1426 |
|
|
1427 |
/**
|
|
1428 |
* Renders the view.
|
|
1429 |
*
|
|
1430 |
* @param g the graphics context
|
|
1431 |
* @param allocation the region to render into
|
|
1432 |
*/
|
|
1433 |
public void paint(Graphics g, Shape allocation) {
|
|
1434 |
if (view != null) {
|
|
1435 |
Rectangle alloc = (allocation instanceof Rectangle) ?
|
|
1436 |
(Rectangle)allocation : allocation.getBounds();
|
|
1437 |
setSize(alloc.width, alloc.height);
|
|
1438 |
view.paint(g, allocation);
|
|
1439 |
}
|
|
1440 |
}
|
|
1441 |
|
|
1442 |
/**
|
|
1443 |
* Sets the view parent.
|
|
1444 |
*
|
|
1445 |
* @param parent the parent view
|
|
1446 |
*/
|
|
1447 |
public void setParent(View parent) {
|
|
1448 |
throw new Error("Can't set parent on root view");
|
|
1449 |
}
|
|
1450 |
|
|
1451 |
/**
|
|
1452 |
* Returns the number of views in this view. Since
|
|
1453 |
* this view simply wraps the root of the view hierarchy
|
|
1454 |
* it has exactly one child.
|
|
1455 |
*
|
|
1456 |
* @return the number of views
|
|
1457 |
* @see #getView
|
|
1458 |
*/
|
|
1459 |
public int getViewCount() {
|
|
1460 |
return 1;
|
|
1461 |
}
|
|
1462 |
|
|
1463 |
/**
|
|
1464 |
* Gets the n-th view in this container.
|
|
1465 |
*
|
|
1466 |
* @param n the number of the view to get
|
|
1467 |
* @return the view
|
|
1468 |
*/
|
|
1469 |
public View getView(int n) {
|
|
1470 |
return view;
|
|
1471 |
}
|
|
1472 |
|
|
1473 |
/**
|
|
1474 |
* Returns the child view index representing the given position in
|
|
1475 |
* the model. This is implemented to return the index of the only
|
|
1476 |
* child.
|
|
1477 |
*
|
|
1478 |
* @param pos the position >= 0
|
|
1479 |
* @return index of the view representing the given position, or
|
|
1480 |
* -1 if no view represents that position
|
|
1481 |
* @since 1.3
|
|
1482 |
*/
|
|
1483 |
public int getViewIndex(int pos, Position.Bias b) {
|
|
1484 |
return 0;
|
|
1485 |
}
|
|
1486 |
|
|
1487 |
/**
|
|
1488 |
* Fetches the allocation for the given child view.
|
|
1489 |
* This enables finding out where various views
|
|
1490 |
* are located, without assuming the views store
|
|
1491 |
* their location. This returns the given allocation
|
|
1492 |
* since this view simply acts as a gateway between
|
|
1493 |
* the view hierarchy and the associated component.
|
|
1494 |
*
|
|
1495 |
* @param index the index of the child
|
|
1496 |
* @param a the allocation to this view.
|
|
1497 |
* @return the allocation to the child
|
|
1498 |
*/
|
|
1499 |
public Shape getChildAllocation(int index, Shape a) {
|
|
1500 |
return a;
|
|
1501 |
}
|
|
1502 |
|
|
1503 |
/**
|
|
1504 |
* Provides a mapping from the document model coordinate space
|
|
1505 |
* to the coordinate space of the view mapped to it.
|
|
1506 |
*
|
|
1507 |
* @param pos the position to convert
|
|
1508 |
* @param a the allocated region to render into
|
|
1509 |
* @return the bounding box of the given position
|
|
1510 |
*/
|
|
1511 |
public Shape modelToView(int pos, Shape a, Position.Bias b) throws BadLocationException {
|
|
1512 |
if (view != null) {
|
|
1513 |
return view.modelToView(pos, a, b);
|
|
1514 |
}
|
|
1515 |
return null;
|
|
1516 |
}
|
|
1517 |
|
|
1518 |
/**
|
|
1519 |
* Provides a mapping from the document model coordinate space
|
|
1520 |
* to the coordinate space of the view mapped to it.
|
|
1521 |
*
|
|
1522 |
* @param p0 the position to convert >= 0
|
|
1523 |
* @param b0 the bias toward the previous character or the
|
|
1524 |
* next character represented by p0, in case the
|
|
1525 |
* position is a boundary of two views.
|
|
1526 |
* @param p1 the position to convert >= 0
|
|
1527 |
* @param b1 the bias toward the previous character or the
|
|
1528 |
* next character represented by p1, in case the
|
|
1529 |
* position is a boundary of two views.
|
|
1530 |
* @param a the allocated region to render into
|
|
1531 |
* @return the bounding box of the given position is returned
|
|
1532 |
* @exception BadLocationException if the given position does
|
|
1533 |
* not represent a valid location in the associated document
|
|
1534 |
* @exception IllegalArgumentException for an invalid bias argument
|
|
1535 |
* @see View#viewToModel
|
|
1536 |
*/
|
|
1537 |
public Shape modelToView(int p0, Position.Bias b0, int p1, Position.Bias b1, Shape a) throws BadLocationException {
|
|
1538 |
if (view != null) {
|
|
1539 |
return view.modelToView(p0, b0, p1, b1, a);
|
|
1540 |
}
|
|
1541 |
return null;
|
|
1542 |
}
|
|
1543 |
|
|
1544 |
/**
|
|
1545 |
* Provides a mapping from the view coordinate space to the logical
|
|
1546 |
* coordinate space of the model.
|
|
1547 |
*
|
|
1548 |
* @param x x coordinate of the view location to convert
|
|
1549 |
* @param y y coordinate of the view location to convert
|
|
1550 |
* @param a the allocated region to render into
|
|
1551 |
* @return the location within the model that best represents the
|
|
1552 |
* given point in the view
|
|
1553 |
*/
|
|
1554 |
public int viewToModel(float x, float y, Shape a, Position.Bias[] bias) {
|
|
1555 |
if (view != null) {
|
|
1556 |
int retValue = view.viewToModel(x, y, a, bias);
|
|
1557 |
return retValue;
|
|
1558 |
}
|
|
1559 |
return -1;
|
|
1560 |
}
|
|
1561 |
|
|
1562 |
/**
|
|
1563 |
* Provides a way to determine the next visually represented model
|
|
1564 |
* location that one might place a caret. Some views may not be visible,
|
|
1565 |
* they might not be in the same order found in the model, or they just
|
|
1566 |
* might not allow access to some of the locations in the model.
|
|
1567 |
*
|
|
1568 |
* @param pos the position to convert >= 0
|
|
1569 |
* @param a the allocated region to render into
|
|
1570 |
* @param direction the direction from the current position that can
|
|
1571 |
* be thought of as the arrow keys typically found on a keyboard.
|
|
1572 |
* This may be SwingConstants.WEST, SwingConstants.EAST,
|
|
1573 |
* SwingConstants.NORTH, or SwingConstants.SOUTH.
|
|
1574 |
* @return the location within the model that best represents the next
|
|
1575 |
* location visual position.
|
|
1576 |
* @exception BadLocationException
|
|
1577 |
* @exception IllegalArgumentException for an invalid direction
|
|
1578 |
*/
|
|
1579 |
public int getNextVisualPositionFrom(int pos, Position.Bias b, Shape a,
|
|
1580 |
int direction,
|
|
1581 |
Position.Bias[] biasRet)
|
|
1582 |
throws BadLocationException {
|
|
1583 |
if( view != null ) {
|
|
1584 |
int nextPos = view.getNextVisualPositionFrom(pos, b, a,
|
|
1585 |
direction, biasRet);
|
|
1586 |
if(nextPos != -1) {
|
|
1587 |
pos = nextPos;
|
|
1588 |
}
|
|
1589 |
else {
|
|
1590 |
biasRet[0] = b;
|
|
1591 |
}
|
|
1592 |
}
|
|
1593 |
return pos;
|
|
1594 |
}
|
|
1595 |
|
|
1596 |
/**
|
|
1597 |
* Gives notification that something was inserted into the document
|
|
1598 |
* in a location that this view is responsible for.
|
|
1599 |
*
|
|
1600 |
* @param e the change information from the associated document
|
|
1601 |
* @param a the current allocation of the view
|
|
1602 |
* @param f the factory to use to rebuild if the view has children
|
|
1603 |
*/
|
|
1604 |
public void insertUpdate(DocumentEvent e, Shape a, ViewFactory f) {
|
|
1605 |
if (view != null) {
|
|
1606 |
view.insertUpdate(e, a, f);
|
|
1607 |
}
|
|
1608 |
}
|
|
1609 |
|
|
1610 |
/**
|
|
1611 |
* Gives notification that something was removed from the document
|
|
1612 |
* in a location that this view is responsible for.
|
|
1613 |
*
|
|
1614 |
* @param e the change information from the associated document
|
|
1615 |
* @param a the current allocation of the view
|
|
1616 |
* @param f the factory to use to rebuild if the view has children
|
|
1617 |
*/
|
|
1618 |
public void removeUpdate(DocumentEvent e, Shape a, ViewFactory f) {
|
|
1619 |
if (view != null) {
|
|
1620 |
view.removeUpdate(e, a, f);
|
|
1621 |
}
|
|
1622 |
}
|
|
1623 |
|
|
1624 |
/**
|
|
1625 |
* Gives notification from the document that attributes were changed
|
|
1626 |
* in a location that this view is responsible for.
|
|
1627 |
*
|
|
1628 |
* @param e the change information from the associated document
|
|
1629 |
* @param a the current allocation of the view
|
|
1630 |
* @param f the factory to use to rebuild if the view has children
|
|
1631 |
*/
|
|
1632 |
public void changedUpdate(DocumentEvent e, Shape a, ViewFactory f) {
|
|
1633 |
if (view != null) {
|
|
1634 |
view.changedUpdate(e, a, f);
|
|
1635 |
}
|
|
1636 |
}
|
|
1637 |
|
|
1638 |
/**
|
|
1639 |
* Returns the document model underlying the view.
|
|
1640 |
*
|
|
1641 |
* @return the model
|
|
1642 |
*/
|
|
1643 |
public Document getDocument() {
|
|
1644 |
return editor.getDocument();
|
|
1645 |
}
|
|
1646 |
|
|
1647 |
/**
|
|
1648 |
* Returns the starting offset into the model for this view.
|
|
1649 |
*
|
|
1650 |
* @return the starting offset
|
|
1651 |
*/
|
|
1652 |
public int getStartOffset() {
|
|
1653 |
if (view != null) {
|
|
1654 |
return view.getStartOffset();
|
|
1655 |
}
|
|
1656 |
return getElement().getStartOffset();
|
|
1657 |
}
|
|
1658 |
|
|
1659 |
/**
|
|
1660 |
* Returns the ending offset into the model for this view.
|
|
1661 |
*
|
|
1662 |
* @return the ending offset
|
|
1663 |
*/
|
|
1664 |
public int getEndOffset() {
|
|
1665 |
if (view != null) {
|
|
1666 |
return view.getEndOffset();
|
|
1667 |
}
|
|
1668 |
return getElement().getEndOffset();
|
|
1669 |
}
|
|
1670 |
|
|
1671 |
/**
|
|
1672 |
* Gets the element that this view is mapped to.
|
|
1673 |
*
|
|
1674 |
* @return the view
|
|
1675 |
*/
|
|
1676 |
public Element getElement() {
|
|
1677 |
if (view != null) {
|
|
1678 |
return view.getElement();
|
|
1679 |
}
|
|
1680 |
return editor.getDocument().getDefaultRootElement();
|
|
1681 |
}
|
|
1682 |
|
|
1683 |
/**
|
|
1684 |
* Breaks this view on the given axis at the given length.
|
|
1685 |
*
|
|
1686 |
* @param axis may be either X_AXIS or Y_AXIS
|
|
1687 |
* @param len specifies where a break is desired in the span
|
|
1688 |
* @param the current allocation of the view
|
|
1689 |
* @return the fragment of the view that represents the given span
|
|
1690 |
* if the view can be broken, otherwise null
|
|
1691 |
*/
|
|
1692 |
public View breakView(int axis, float len, Shape a) {
|
|
1693 |
throw new Error("Can't break root view");
|
|
1694 |
}
|
|
1695 |
|
|
1696 |
/**
|
|
1697 |
* Determines the resizability of the view along the
|
|
1698 |
* given axis. A value of 0 or less is not resizable.
|
|
1699 |
*
|
|
1700 |
* @param axis may be either X_AXIS or Y_AXIS
|
|
1701 |
* @return the weight
|
|
1702 |
*/
|
|
1703 |
public int getResizeWeight(int axis) {
|
|
1704 |
if (view != null) {
|
|
1705 |
return view.getResizeWeight(axis);
|
|
1706 |
}
|
|
1707 |
return 0;
|
|
1708 |
}
|
|
1709 |
|
|
1710 |
/**
|
|
1711 |
* Sets the view size.
|
|
1712 |
*
|
|
1713 |
* @param width the width
|
|
1714 |
* @param height the height
|
|
1715 |
*/
|
|
1716 |
public void setSize(float width, float height) {
|
|
1717 |
if (view != null) {
|
|
1718 |
view.setSize(width, height);
|
|
1719 |
}
|
|
1720 |
}
|
|
1721 |
|
|
1722 |
/**
|
|
1723 |
* Fetches the container hosting the view. This is useful for
|
|
1724 |
* things like scheduling a repaint, finding out the host
|
|
1725 |
* components font, etc. The default implementation
|
|
1726 |
* of this is to forward the query to the parent view.
|
|
1727 |
*
|
|
1728 |
* @return the container
|
|
1729 |
*/
|
|
1730 |
public Container getContainer() {
|
|
1731 |
return editor;
|
|
1732 |
}
|
|
1733 |
|
|
1734 |
/**
|
|
1735 |
* Fetches the factory to be used for building the
|
|
1736 |
* various view fragments that make up the view that
|
|
1737 |
* represents the model. This is what determines
|
|
1738 |
* how the model will be represented. This is implemented
|
|
1739 |
* to fetch the factory provided by the associated
|
|
1740 |
* EditorKit unless that is null, in which case this
|
|
1741 |
* simply returns the BasicTextUI itself which allows
|
|
1742 |
* subclasses to implement a simple factory directly without
|
|
1743 |
* creating extra objects.
|
|
1744 |
*
|
|
1745 |
* @return the factory
|
|
1746 |
*/
|
|
1747 |
public ViewFactory getViewFactory() {
|
|
1748 |
EditorKit kit = getEditorKit(editor);
|
|
1749 |
ViewFactory f = kit.getViewFactory();
|
|
1750 |
if (f != null) {
|
|
1751 |
return f;
|
|
1752 |
}
|
|
1753 |
return BasicTextUI.this;
|
|
1754 |
}
|
|
1755 |
|
|
1756 |
private View view;
|
|
1757 |
|
|
1758 |
}
|
|
1759 |
|
|
1760 |
/**
|
|
1761 |
* Handles updates from various places. If the model is changed,
|
|
1762 |
* this class unregisters as a listener to the old model and
|
|
1763 |
* registers with the new model. If the document model changes,
|
|
1764 |
* the change is forwarded to the root view. If the focus
|
|
1765 |
* accelerator changes, a new keystroke is registered to request
|
|
1766 |
* focus.
|
|
1767 |
*/
|
|
1768 |
class UpdateHandler implements PropertyChangeListener, DocumentListener, LayoutManager2, UIResource {
|
|
1769 |
|
|
1770 |
// --- PropertyChangeListener methods -----------------------
|
|
1771 |
|
|
1772 |
/**
|
|
1773 |
* This method gets called when a bound property is changed.
|
|
1774 |
* We are looking for document changes on the editor.
|
|
1775 |
*/
|
|
1776 |
public final void propertyChange(PropertyChangeEvent evt) {
|
|
1777 |
Object oldValue = evt.getOldValue();
|
|
1778 |
Object newValue = evt.getNewValue();
|
|
1779 |
String propertyName = evt.getPropertyName();
|
|
1780 |
if ((oldValue instanceof Document) || (newValue instanceof Document)) {
|
|
1781 |
if (oldValue != null) {
|
|
1782 |
((Document)oldValue).removeDocumentListener(this);
|
|
1783 |
i18nView = false;
|
|
1784 |
}
|
|
1785 |
if (newValue != null) {
|
|
1786 |
((Document)newValue).addDocumentListener(this);
|
|
1787 |
if ("document" == propertyName) {
|
|
1788 |
setView(null);
|
|
1789 |
BasicTextUI.this.propertyChange(evt);
|
|
1790 |
modelChanged();
|
|
1791 |
return;
|
|
1792 |
}
|
|
1793 |
}
|
|
1794 |
modelChanged();
|
|
1795 |
}
|
|
1796 |
if ("focusAccelerator" == propertyName) {
|
|
1797 |
updateFocusAcceleratorBinding(true);
|
|
1798 |
} else if ("componentOrientation" == propertyName) {
|
|
1799 |
// Changes in ComponentOrientation require the views to be
|
|
1800 |
// rebuilt.
|
|
1801 |
modelChanged();
|
|
1802 |
} else if ("font" == propertyName) {
|
|
1803 |
modelChanged();
|
|
1804 |
} else if ("dropLocation" == propertyName) {
|
|
1805 |
dropIndexChanged();
|
|
1806 |
} else if ("editable" == propertyName) {
|
|
1807 |
updateCursor();
|
|
1808 |
modelChanged();
|
|
1809 |
}
|
|
1810 |
BasicTextUI.this.propertyChange(evt);
|
|
1811 |
}
|
|
1812 |
|
|
1813 |
private void dropIndexChanged() {
|
|
1814 |
if (editor.getDropMode() == DropMode.USE_SELECTION) {
|
|
1815 |
return;
|
|
1816 |
}
|
|
1817 |
|
|
1818 |
JTextComponent.DropLocation dropLocation = editor.getDropLocation();
|
|
1819 |
|
|
1820 |
if (dropLocation == null) {
|
|
1821 |
if (dropCaret != null) {
|
|
1822 |
dropCaret.deinstall(editor);
|
|
1823 |
editor.repaint(dropCaret);
|
|
1824 |
dropCaret = null;
|
|
1825 |
}
|
|
1826 |
} else {
|
|
1827 |
if (dropCaret == null) {
|
|
1828 |
dropCaret = new BasicCaret();
|
|
1829 |
dropCaret.install(editor);
|
|
1830 |
dropCaret.setVisible(true);
|
|
1831 |
}
|
|
1832 |
|
|
1833 |
dropCaret.setDot(dropLocation.getIndex(),
|
|
1834 |
dropLocation.getBias());
|
|
1835 |
}
|
|
1836 |
}
|
|
1837 |
|
|
1838 |
// --- DocumentListener methods -----------------------
|
|
1839 |
|
|
1840 |
/**
|
|
1841 |
* The insert notification. Gets sent to the root of the view structure
|
|
1842 |
* that represents the portion of the model being represented by the
|
|
1843 |
* editor. The factory is added as an argument to the update so that
|
|
1844 |
* the views can update themselves in a dynamic (not hardcoded) way.
|
|
1845 |
*
|
|
1846 |
* @param e The change notification from the currently associated
|
|
1847 |
* document.
|
|
1848 |
* @see DocumentListener#insertUpdate
|
|
1849 |
*/
|
|
1850 |
public final void insertUpdate(DocumentEvent e) {
|
|
1851 |
Document doc = e.getDocument();
|
|
1852 |
Object o = doc.getProperty("i18n");
|
|
1853 |
if (o instanceof Boolean) {
|
|
1854 |
Boolean i18nFlag = (Boolean) o;
|
|
1855 |
if (i18nFlag.booleanValue() != i18nView) {
|
|
1856 |
// i18n flag changed, rebuild the view
|
|
1857 |
i18nView = i18nFlag.booleanValue();
|
|
1858 |
modelChanged();
|
|
1859 |
return;
|
|
1860 |
}
|
|
1861 |
}
|
|
1862 |
|
|
1863 |
// normal insert update
|
|
1864 |
Rectangle alloc = (painted) ? getVisibleEditorRect() : null;
|
|
1865 |
rootView.insertUpdate(e, alloc, rootView.getViewFactory());
|
|
1866 |
}
|
|
1867 |
|
|
1868 |
/**
|
|
1869 |
* The remove notification. Gets sent to the root of the view structure
|
|
1870 |
* that represents the portion of the model being represented by the
|
|
1871 |
* editor. The factory is added as an argument to the update so that
|
|
1872 |
* the views can update themselves in a dynamic (not hardcoded) way.
|
|
1873 |
*
|
|
1874 |
* @param e The change notification from the currently associated
|
|
1875 |
* document.
|
|
1876 |
* @see DocumentListener#removeUpdate
|
|
1877 |
*/
|
|
1878 |
public final void removeUpdate(DocumentEvent e) {
|
|
1879 |
Rectangle alloc = (painted) ? getVisibleEditorRect() : null;
|
|
1880 |
rootView.removeUpdate(e, alloc, rootView.getViewFactory());
|
|
1881 |
}
|
|
1882 |
|
|
1883 |
/**
|
|
1884 |
* The change notification. Gets sent to the root of the view structure
|
|
1885 |
* that represents the portion of the model being represented by the
|
|
1886 |
* editor. The factory is added as an argument to the update so that
|
|
1887 |
* the views can update themselves in a dynamic (not hardcoded) way.
|
|
1888 |
*
|
|
1889 |
* @param e The change notification from the currently associated
|
|
1890 |
* document.
|
|
1891 |
* @see DocumentListener#changeUpdate
|
|
1892 |
*/
|
|
1893 |
public final void changedUpdate(DocumentEvent e) {
|
|
1894 |
Rectangle alloc = (painted) ? getVisibleEditorRect() : null;
|
|
1895 |
rootView.changedUpdate(e, alloc, rootView.getViewFactory());
|
|
1896 |
}
|
|
1897 |
|
|
1898 |
// --- LayoutManager2 methods --------------------------------
|
|
1899 |
|
|
1900 |
/**
|
|
1901 |
* Adds the specified component with the specified name to
|
|
1902 |
* the layout.
|
|
1903 |
* @param name the component name
|
|
1904 |
* @param comp the component to be added
|
|
1905 |
*/
|
|
1906 |
public void addLayoutComponent(String name, Component comp) {
|
|
1907 |
// not supported
|
|
1908 |
}
|
|
1909 |
|
|
1910 |
/**
|
|
1911 |
* Removes the specified component from the layout.
|
|
1912 |
* @param comp the component to be removed
|
|
1913 |
*/
|
|
1914 |
public void removeLayoutComponent(Component comp) {
|
|
1915 |
if (constraints != null) {
|
|
1916 |
// remove the constraint record
|
|
1917 |
constraints.remove(comp);
|
|
1918 |
}
|
|
1919 |
}
|
|
1920 |
|
|
1921 |
/**
|
|
1922 |
* Calculates the preferred size dimensions for the specified
|
|
1923 |
* panel given the components in the specified parent container.
|
|
1924 |
* @param parent the component to be laid out
|
|
1925 |
*
|
|
1926 |
* @see #minimumLayoutSize
|
|
1927 |
*/
|
|
1928 |
public Dimension preferredLayoutSize(Container parent) {
|
|
1929 |
// should not be called (JComponent uses UI instead)
|
|
1930 |
return null;
|
|
1931 |
}
|
|
1932 |
|
|
1933 |
/**
|
|
1934 |
* Calculates the minimum size dimensions for the specified
|
|
1935 |
* panel given the components in the specified parent container.
|
|
1936 |
* @param parent the component to be laid out
|
|
1937 |
* @see #preferredLayoutSize
|
|
1938 |
*/
|
|
1939 |
public Dimension minimumLayoutSize(Container parent) {
|
|
1940 |
// should not be called (JComponent uses UI instead)
|
|
1941 |
return null;
|
|
1942 |
}
|
|
1943 |
|
|
1944 |
/**
|
|
1945 |
* Lays out the container in the specified panel. This is
|
|
1946 |
* implemented to position all components that were added
|
|
1947 |
* with a View object as a constraint. The current allocation
|
|
1948 |
* of the associated View is used as the location of the
|
|
1949 |
* component.
|
|
1950 |
* <p>
|
|
1951 |
* A read-lock is acquired on the document to prevent the
|
|
1952 |
* view tree from being modified while the layout process
|
|
1953 |
* is active.
|
|
1954 |
*
|
|
1955 |
* @param parent the component which needs to be laid out
|
|
1956 |
*/
|
|
1957 |
public void layoutContainer(Container parent) {
|
|
1958 |
if ((constraints != null) && (! constraints.isEmpty())) {
|
|
1959 |
Rectangle alloc = getVisibleEditorRect();
|
|
1960 |
if (alloc != null) {
|
|
1961 |
Document doc = editor.getDocument();
|
|
1962 |
if (doc instanceof AbstractDocument) {
|
|
1963 |
((AbstractDocument)doc).readLock();
|
|
1964 |
}
|
|
1965 |
try {
|
|
1966 |
rootView.setSize(alloc.width, alloc.height);
|
|
1967 |
Enumeration components = constraints.keys();
|
|
1968 |
while (components.hasMoreElements()) {
|
|
1969 |
Component comp = (Component) components.nextElement();
|
|
1970 |
View v = (View) constraints.get(comp);
|
|
1971 |
Shape ca = calculateViewPosition(alloc, v);
|
|
1972 |
if (ca != null) {
|
|
1973 |
Rectangle compAlloc = (ca instanceof Rectangle) ?
|
|
1974 |
(Rectangle) ca : ca.getBounds();
|
|
1975 |
comp.setBounds(compAlloc);
|
|
1976 |
}
|
|
1977 |
}
|
|
1978 |
} finally {
|
|
1979 |
if (doc instanceof AbstractDocument) {
|
|
1980 |
((AbstractDocument)doc).readUnlock();
|
|
1981 |
}
|
|
1982 |
}
|
|
1983 |
}
|
|
1984 |
}
|
|
1985 |
}
|
|
1986 |
|
|
1987 |
/**
|
|
1988 |
* Find the Shape representing the given view.
|
|
1989 |
*/
|
|
1990 |
Shape calculateViewPosition(Shape alloc, View v) {
|
|
1991 |
int pos = v.getStartOffset();
|
|
1992 |
View child = null;
|
|
1993 |
for (View parent = rootView; (parent != null) && (parent != v); parent = child) {
|
|
1994 |
int index = parent.getViewIndex(pos, Position.Bias.Forward);
|
|
1995 |
alloc = parent.getChildAllocation(index, alloc);
|
|
1996 |
child = parent.getView(index);
|
|
1997 |
}
|
|
1998 |
return (child != null) ? alloc : null;
|
|
1999 |
}
|
|
2000 |
|
|
2001 |
/**
|
|
2002 |
* Adds the specified component to the layout, using the specified
|
|
2003 |
* constraint object. We only store those components that were added
|
|
2004 |
* with a constraint that is of type View.
|
|
2005 |
*
|
|
2006 |
* @param comp the component to be added
|
|
2007 |
* @param constraint where/how the component is added to the layout.
|
|
2008 |
*/
|
|
2009 |
public void addLayoutComponent(Component comp, Object constraint) {
|
|
2010 |
if (constraint instanceof View) {
|
|
2011 |
if (constraints == null) {
|
|
2012 |
constraints = new Hashtable(7);
|
|
2013 |
}
|
|
2014 |
constraints.put(comp, constraint);
|
|
2015 |
}
|
|
2016 |
}
|
|
2017 |
|
|
2018 |
/**
|
|
2019 |
* Returns the maximum size of this component.
|
|
2020 |
* @see java.awt.Component#getMinimumSize()
|
|
2021 |
* @see java.awt.Component#getPreferredSize()
|
|
2022 |
* @see LayoutManager
|
|
2023 |
*/
|
|
2024 |
public Dimension maximumLayoutSize(Container target) {
|
|
2025 |
// should not be called (JComponent uses UI instead)
|
|
2026 |
return null;
|
|
2027 |
}
|
|
2028 |
|
|
2029 |
/**
|
|
2030 |
* Returns the alignment along the x axis. This specifies how
|
|
2031 |
* the component would like to be aligned relative to other
|
|
2032 |
* components. The value should be a number between 0 and 1
|
|
2033 |
* where 0 represents alignment along the origin, 1 is aligned
|
|
2034 |
* the furthest away from the origin, 0.5 is centered, etc.
|
|
2035 |
*/
|
|
2036 |
public float getLayoutAlignmentX(Container target) {
|
|
2037 |
return 0.5f;
|
|
2038 |
}
|
|
2039 |
|
|
2040 |
/**
|
|
2041 |
* Returns the alignment along the y axis. This specifies how
|
|
2042 |
* the component would like to be aligned relative to other
|
|
2043 |
* components. The value should be a number between 0 and 1
|
|
2044 |
* where 0 represents alignment along the origin, 1 is aligned
|
|
2045 |
* the furthest away from the origin, 0.5 is centered, etc.
|
|
2046 |
*/
|
|
2047 |
public float getLayoutAlignmentY(Container target) {
|
|
2048 |
return 0.5f;
|
|
2049 |
}
|
|
2050 |
|
|
2051 |
/**
|
|
2052 |
* Invalidates the layout, indicating that if the layout manager
|
|
2053 |
* has cached information it should be discarded.
|
|
2054 |
*/
|
|
2055 |
public void invalidateLayout(Container target) {
|
|
2056 |
}
|
|
2057 |
|
|
2058 |
/**
|
|
2059 |
* The "layout constraints" for the LayoutManager2 implementation.
|
|
2060 |
* These are View objects for those components that are represented
|
|
2061 |
* by a View in the View tree.
|
|
2062 |
*/
|
|
2063 |
private Hashtable constraints;
|
|
2064 |
|
|
2065 |
private boolean i18nView = false;
|
|
2066 |
}
|
|
2067 |
|
|
2068 |
/**
|
|
2069 |
* Wrapper for text actions to return isEnabled false in case editor is non editable
|
|
2070 |
*/
|
|
2071 |
class TextActionWrapper extends TextAction {
|
|
2072 |
public TextActionWrapper(TextAction action) {
|
|
2073 |
super((String)action.getValue(Action.NAME));
|
|
2074 |
this.action = action;
|
|
2075 |
}
|
|
2076 |
/**
|
|
2077 |
* The operation to perform when this action is triggered.
|
|
2078 |
*
|
|
2079 |
* @param e the action event
|
|
2080 |
*/
|
|
2081 |
public void actionPerformed(ActionEvent e) {
|
|
2082 |
action.actionPerformed(e);
|
|
2083 |
}
|
|
2084 |
public boolean isEnabled() {
|
|
2085 |
return (editor == null || editor.isEditable()) ? action.isEnabled() : false;
|
|
2086 |
}
|
|
2087 |
TextAction action = null;
|
|
2088 |
}
|
|
2089 |
|
|
2090 |
|
|
2091 |
/**
|
|
2092 |
* Registered in the ActionMap.
|
|
2093 |
*/
|
|
2094 |
class FocusAction extends AbstractAction {
|
|
2095 |
|
|
2096 |
public void actionPerformed(ActionEvent e) {
|
|
2097 |
editor.requestFocus();
|
|
2098 |
}
|
|
2099 |
|
|
2100 |
public boolean isEnabled() {
|
|
2101 |
return editor.isEditable();
|
|
2102 |
}
|
|
2103 |
}
|
|
2104 |
|
|
2105 |
private static DragListener getDragListener() {
|
|
2106 |
synchronized(DragListener.class) {
|
|
2107 |
DragListener listener =
|
|
2108 |
(DragListener)AppContext.getAppContext().
|
|
2109 |
get(DragListener.class);
|
|
2110 |
|
|
2111 |
if (listener == null) {
|
|
2112 |
listener = new DragListener();
|
|
2113 |
AppContext.getAppContext().put(DragListener.class, listener);
|
|
2114 |
}
|
|
2115 |
|
|
2116 |
return listener;
|
|
2117 |
}
|
|
2118 |
}
|
|
2119 |
|
|
2120 |
/**
|
|
2121 |
* Listens for mouse events for the purposes of detecting drag gestures.
|
|
2122 |
* BasicTextUI will maintain one of these per AppContext.
|
|
2123 |
*/
|
|
2124 |
static class DragListener extends MouseInputAdapter
|
|
2125 |
implements BeforeDrag {
|
|
2126 |
|
|
2127 |
private boolean dragStarted;
|
|
2128 |
|
|
2129 |
public void dragStarting(MouseEvent me) {
|
|
2130 |
dragStarted = true;
|
|
2131 |
}
|
|
2132 |
|
|
2133 |
public void mousePressed(MouseEvent e) {
|
|
2134 |
JTextComponent c = (JTextComponent)e.getSource();
|
|
2135 |
if (c.getDragEnabled()) {
|
|
2136 |
dragStarted = false;
|
|
2137 |
if (isDragPossible(e) && DragRecognitionSupport.mousePressed(e)) {
|
|
2138 |
e.consume();
|
|
2139 |
}
|
|
2140 |
}
|
|
2141 |
}
|
|
2142 |
|
|
2143 |
public void mouseReleased(MouseEvent e) {
|
|
2144 |
JTextComponent c = (JTextComponent)e.getSource();
|
|
2145 |
if (c.getDragEnabled()) {
|
|
2146 |
if (dragStarted) {
|
|
2147 |
e.consume();
|
|
2148 |
}
|
|
2149 |
|
|
2150 |
DragRecognitionSupport.mouseReleased(e);
|
|
2151 |
}
|
|
2152 |
}
|
|
2153 |
|
|
2154 |
public void mouseDragged(MouseEvent e) {
|
|
2155 |
JTextComponent c = (JTextComponent)e.getSource();
|
|
2156 |
if (c.getDragEnabled()) {
|
|
2157 |
if (dragStarted || DragRecognitionSupport.mouseDragged(e, this)) {
|
|
2158 |
e.consume();
|
|
2159 |
}
|
|
2160 |
}
|
|
2161 |
}
|
|
2162 |
|
|
2163 |
/**
|
|
2164 |
* Determines if the following are true:
|
|
2165 |
* <ul>
|
|
2166 |
* <li>the component is enabled
|
|
2167 |
* <li>the press event is located over a selection
|
|
2168 |
* </ul>
|
|
2169 |
*/
|
|
2170 |
protected boolean isDragPossible(MouseEvent e) {
|
|
2171 |
JTextComponent c = (JTextComponent)e.getSource();
|
|
2172 |
if (c.isEnabled()) {
|
|
2173 |
Caret caret = c.getCaret();
|
|
2174 |
int dot = caret.getDot();
|
|
2175 |
int mark = caret.getMark();
|
|
2176 |
if (dot != mark) {
|
|
2177 |
Point p = new Point(e.getX(), e.getY());
|
|
2178 |
int pos = c.viewToModel(p);
|
|
2179 |
|
|
2180 |
int p0 = Math.min(dot, mark);
|
|
2181 |
int p1 = Math.max(dot, mark);
|
|
2182 |
if ((pos >= p0) && (pos < p1)) {
|
|
2183 |
return true;
|
|
2184 |
}
|
|
2185 |
}
|
|
2186 |
}
|
|
2187 |
return false;
|
|
2188 |
}
|
|
2189 |
}
|
|
2190 |
|
|
2191 |
static class TextTransferHandler extends TransferHandler implements UIResource {
|
|
2192 |
|
|
2193 |
private JTextComponent exportComp;
|
|
2194 |
private boolean shouldRemove;
|
|
2195 |
private int p0;
|
|
2196 |
private int p1;
|
|
2197 |
|
|
2198 |
/**
|
|
2199 |
* Whether or not this is a drop using
|
|
2200 |
* <code>DropMode.INSERT</code>.
|
|
2201 |
*/
|
|
2202 |
private boolean modeBetween = false;
|
|
2203 |
|
|
2204 |
/**
|
|
2205 |
* Whether or not this is a drop.
|
|
2206 |
*/
|
|
2207 |
private boolean isDrop = false;
|
|
2208 |
|
|
2209 |
/**
|
|
2210 |
* The drop action.
|
|
2211 |
*/
|
|
2212 |
private int dropAction = MOVE;
|
|
2213 |
|
|
2214 |
/**
|
|
2215 |
* The drop bias.
|
|
2216 |
*/
|
|
2217 |
private Position.Bias dropBias;
|
|
2218 |
|
|
2219 |
/**
|
|
2220 |
* Try to find a flavor that can be used to import a Transferable.
|
|
2221 |
* The set of usable flavors are tried in the following order:
|
|
2222 |
* <ol>
|
|
2223 |
* <li>First, an attempt is made to find a flavor matching the content type
|
|
2224 |
* of the EditorKit for the component.
|
|
2225 |
* <li>Second, an attempt to find a text/plain flavor is made.
|
|
2226 |
* <li>Third, an attempt to find a flavor representing a String reference
|
|
2227 |
* in the same VM is made.
|
|
2228 |
* <li>Lastly, DataFlavor.stringFlavor is searched for.
|
|
2229 |
* </ol>
|
|
2230 |
*/
|
|
2231 |
protected DataFlavor getImportFlavor(DataFlavor[] flavors, JTextComponent c) {
|
|
2232 |
DataFlavor plainFlavor = null;
|
|
2233 |
DataFlavor refFlavor = null;
|
|
2234 |
DataFlavor stringFlavor = null;
|
|
2235 |
|
|
2236 |
if (c instanceof JEditorPane) {
|
|
2237 |
for (int i = 0; i < flavors.length; i++) {
|
|
2238 |
String mime = flavors[i].getMimeType();
|
|
2239 |
if (mime.startsWith(((JEditorPane)c).getEditorKit().getContentType())) {
|
|
2240 |
return flavors[i];
|
|
2241 |
} else if (plainFlavor == null && mime.startsWith("text/plain")) {
|
|
2242 |
plainFlavor = flavors[i];
|
|
2243 |
} else if (refFlavor == null && mime.startsWith("application/x-java-jvm-local-objectref")
|
|
2244 |
&& flavors[i].getRepresentationClass() == java.lang.String.class) {
|
|
2245 |
refFlavor = flavors[i];
|
|
2246 |
} else if (stringFlavor == null && flavors[i].equals(DataFlavor.stringFlavor)) {
|
|
2247 |
stringFlavor = flavors[i];
|
|
2248 |
}
|
|
2249 |
}
|
|
2250 |
if (plainFlavor != null) {
|
|
2251 |
return plainFlavor;
|
|
2252 |
} else if (refFlavor != null) {
|
|
2253 |
return refFlavor;
|
|
2254 |
} else if (stringFlavor != null) {
|
|
2255 |
return stringFlavor;
|
|
2256 |
}
|
|
2257 |
return null;
|
|
2258 |
}
|
|
2259 |
|
|
2260 |
|
|
2261 |
for (int i = 0; i < flavors.length; i++) {
|
|
2262 |
String mime = flavors[i].getMimeType();
|
|
2263 |
if (mime.startsWith("text/plain")) {
|
|
2264 |
return flavors[i];
|
|
2265 |
} else if (refFlavor == null && mime.startsWith("application/x-java-jvm-local-objectref")
|
|
2266 |
&& flavors[i].getRepresentationClass() == java.lang.String.class) {
|
|
2267 |
refFlavor = flavors[i];
|
|
2268 |
} else if (stringFlavor == null && flavors[i].equals(DataFlavor.stringFlavor)) {
|
|
2269 |
stringFlavor = flavors[i];
|
|
2270 |
}
|
|
2271 |
}
|
|
2272 |
if (refFlavor != null) {
|
|
2273 |
return refFlavor;
|
|
2274 |
} else if (stringFlavor != null) {
|
|
2275 |
return stringFlavor;
|
|
2276 |
}
|
|
2277 |
return null;
|
|
2278 |
}
|
|
2279 |
|
|
2280 |
/**
|
|
2281 |
* Import the given stream data into the text component.
|
|
2282 |
*/
|
|
2283 |
protected void handleReaderImport(Reader in, JTextComponent c, boolean useRead)
|
|
2284 |
throws BadLocationException, IOException {
|
|
2285 |
if (useRead) {
|
|
2286 |
int startPosition = c.getSelectionStart();
|
|
2287 |
int endPosition = c.getSelectionEnd();
|
|
2288 |
int length = endPosition - startPosition;
|
|
2289 |
EditorKit kit = c.getUI().getEditorKit(c);
|
|
2290 |
Document doc = c.getDocument();
|
|
2291 |
if (length > 0) {
|
|
2292 |
doc.remove(startPosition, length);
|
|
2293 |
}
|
|
2294 |
kit.read(in, doc, startPosition);
|
|
2295 |
} else {
|
|
2296 |
char[] buff = new char[1024];
|
|
2297 |
int nch;
|
|
2298 |
boolean lastWasCR = false;
|
|
2299 |
int last;
|
|
2300 |
StringBuffer sbuff = null;
|
|
2301 |
|
|
2302 |
// Read in a block at a time, mapping \r\n to \n, as well as single
|
|
2303 |
// \r to \n.
|
|
2304 |
while ((nch = in.read(buff, 0, buff.length)) != -1) {
|
|
2305 |
if (sbuff == null) {
|
|
2306 |
sbuff = new StringBuffer(nch);
|
|
2307 |
}
|
|
2308 |
last = 0;
|
|
2309 |
for(int counter = 0; counter < nch; counter++) {
|
|
2310 |
switch(buff[counter]) {
|
|
2311 |
case '\r':
|
|
2312 |
if (lastWasCR) {
|
|
2313 |
if (counter == 0) {
|
|
2314 |
sbuff.append('\n');
|
|
2315 |
} else {
|
|
2316 |
buff[counter - 1] = '\n';
|
|
2317 |
}
|
|
2318 |
} else {
|
|
2319 |
lastWasCR = true;
|
|
2320 |
}
|
|
2321 |
break;
|
|
2322 |
case '\n':
|
|
2323 |
if (lastWasCR) {
|
|
2324 |
if (counter > (last + 1)) {
|
|
2325 |
sbuff.append(buff, last, counter - last - 1);
|
|
2326 |
}
|
|
2327 |
// else nothing to do, can skip \r, next write will
|
|
2328 |
// write \n
|
|
2329 |
lastWasCR = false;
|
|
2330 |
last = counter;
|
|
2331 |
}
|
|
2332 |
break;
|
|
2333 |
default:
|
|
2334 |
if (lastWasCR) {
|
|
2335 |
if (counter == 0) {
|
|
2336 |
sbuff.append('\n');
|
|
2337 |
} else {
|
|
2338 |
buff[counter - 1] = '\n';
|
|
2339 |
}
|
|
2340 |
lastWasCR = false;
|
|
2341 |
}
|
|
2342 |
break;
|
|
2343 |
}
|
|
2344 |
}
|
|
2345 |
if (last < nch) {
|
|
2346 |
if (lastWasCR) {
|
|
2347 |
if (last < (nch - 1)) {
|
|
2348 |
sbuff.append(buff, last, nch - last - 1);
|
|
2349 |
}
|
|
2350 |
} else {
|
|
2351 |
sbuff.append(buff, last, nch - last);
|
|
2352 |
}
|
|
2353 |
}
|
|
2354 |
}
|
|
2355 |
if (lastWasCR) {
|
|
2356 |
sbuff.append('\n');
|
|
2357 |
}
|
|
2358 |
c.replaceSelection(sbuff != null ? sbuff.toString() : "");
|
|
2359 |
}
|
|
2360 |
}
|
|
2361 |
|
|
2362 |
// --- TransferHandler methods ------------------------------------
|
|
2363 |
|
|
2364 |
/**
|
|
2365 |
* This is the type of transfer actions supported by the source. Some models are
|
|
2366 |
* not mutable, so a transfer operation of COPY only should
|
|
2367 |
* be advertised in that case.
|
|
2368 |
*
|
|
2369 |
* @param c The component holding the data to be transfered. This
|
|
2370 |
* argument is provided to enable sharing of TransferHandlers by
|
|
2371 |
* multiple components.
|
|
2372 |
* @return This is implemented to return NONE if the component is a JPasswordField
|
|
2373 |
* since exporting data via user gestures is not allowed. If the text component is
|
|
2374 |
* editable, COPY_OR_MOVE is returned, otherwise just COPY is allowed.
|
|
2375 |
*/
|
|
2376 |
public int getSourceActions(JComponent c) {
|
|
2377 |
if (c instanceof JPasswordField &&
|
|
2378 |
c.getClientProperty("JPasswordField.cutCopyAllowed") !=
|
|
2379 |
Boolean.TRUE) {
|
|
2380 |
return NONE;
|
|
2381 |
}
|
|
2382 |
|
|
2383 |
return ((JTextComponent)c).isEditable() ? COPY_OR_MOVE : COPY;
|
|
2384 |
}
|
|
2385 |
|
|
2386 |
/**
|
|
2387 |
* Create a Transferable to use as the source for a data transfer.
|
|
2388 |
*
|
|
2389 |
* @param comp The component holding the data to be transfered. This
|
|
2390 |
* argument is provided to enable sharing of TransferHandlers by
|
|
2391 |
* multiple components.
|
|
2392 |
* @return The representation of the data to be transfered.
|
|
2393 |
*
|
|
2394 |
*/
|
|
2395 |
protected Transferable createTransferable(JComponent comp) {
|
|
2396 |
exportComp = (JTextComponent)comp;
|
|
2397 |
shouldRemove = true;
|
|
2398 |
p0 = exportComp.getSelectionStart();
|
|
2399 |
p1 = exportComp.getSelectionEnd();
|
|
2400 |
return (p0 != p1) ? (new TextTransferable(exportComp, p0, p1)) : null;
|
|
2401 |
}
|
|
2402 |
|
|
2403 |
/**
|
|
2404 |
* This method is called after data has been exported. This method should remove
|
|
2405 |
* the data that was transfered if the action was MOVE.
|
|
2406 |
*
|
|
2407 |
* @param source The component that was the source of the data.
|
|
2408 |
* @param data The data that was transferred or possibly null
|
|
2409 |
* if the action is <code>NONE</code>.
|
|
2410 |
* @param action The actual action that was performed.
|
|
2411 |
*/
|
|
2412 |
protected void exportDone(JComponent source, Transferable data, int action) {
|
|
2413 |
// only remove the text if shouldRemove has not been set to
|
|
2414 |
// false by importData and only if the action is a move
|
|
2415 |
if (shouldRemove && action == MOVE) {
|
|
2416 |
TextTransferable t = (TextTransferable)data;
|
|
2417 |
t.removeText();
|
|
2418 |
}
|
|
2419 |
|
|
2420 |
exportComp = null;
|
|
2421 |
}
|
|
2422 |
|
|
2423 |
public boolean importData(TransferSupport support) {
|
|
2424 |
isDrop = support.isDrop();
|
|
2425 |
|
|
2426 |
if (isDrop) {
|
|
2427 |
modeBetween =
|
|
2428 |
((JTextComponent)support.getComponent()).getDropMode() == DropMode.INSERT;
|
|
2429 |
|
|
2430 |
dropBias = ((JTextComponent.DropLocation)support.getDropLocation()).getBias();
|
|
2431 |
|
|
2432 |
dropAction = support.getDropAction();
|
|
2433 |
}
|
|
2434 |
|
|
2435 |
try {
|
|
2436 |
return super.importData(support);
|
|
2437 |
} finally {
|
|
2438 |
isDrop = false;
|
|
2439 |
modeBetween = false;
|
|
2440 |
dropBias = null;
|
|
2441 |
dropAction = MOVE;
|
|
2442 |
}
|
|
2443 |
}
|
|
2444 |
|
|
2445 |
/**
|
|
2446 |
* This method causes a transfer to a component from a clipboard or a
|
|
2447 |
* DND drop operation. The Transferable represents the data to be
|
|
2448 |
* imported into the component.
|
|
2449 |
*
|
|
2450 |
* @param comp The component to receive the transfer. This
|
|
2451 |
* argument is provided to enable sharing of TransferHandlers by
|
|
2452 |
* multiple components.
|
|
2453 |
* @param t The data to import
|
|
2454 |
* @return true if the data was inserted into the component, false otherwise.
|
|
2455 |
*/
|
|
2456 |
public boolean importData(JComponent comp, Transferable t) {
|
|
2457 |
JTextComponent c = (JTextComponent)comp;
|
|
2458 |
|
|
2459 |
int pos = modeBetween
|
|
2460 |
? ((JTextComponent.DropLocation)c.getDropLocation()).getIndex()
|
|
2461 |
: c.getCaretPosition();
|
|
2462 |
|
|
2463 |
// if we are importing to the same component that we exported from
|
|
2464 |
// then don't actually do anything if the drop location is inside
|
|
2465 |
// the drag location and set shouldRemove to false so that exportDone
|
|
2466 |
// knows not to remove any data
|
|
2467 |
if (dropAction == MOVE && c == exportComp && pos >= p0 && pos <= p1) {
|
|
2468 |
shouldRemove = false;
|
|
2469 |
return true;
|
|
2470 |
}
|
|
2471 |
|
|
2472 |
boolean imported = false;
|
|
2473 |
DataFlavor importFlavor = getImportFlavor(t.getTransferDataFlavors(), c);
|
|
2474 |
if (importFlavor != null) {
|
|
2475 |
try {
|
|
2476 |
boolean useRead = false;
|
|
2477 |
if (comp instanceof JEditorPane) {
|
|
2478 |
JEditorPane ep = (JEditorPane)comp;
|
|
2479 |
if (!ep.getContentType().startsWith("text/plain") &&
|
|
2480 |
importFlavor.getMimeType().startsWith(ep.getContentType())) {
|
|
2481 |
useRead = true;
|
|
2482 |
}
|
|
2483 |
}
|
|
2484 |
InputContext ic = c.getInputContext();
|
|
2485 |
if (ic != null) {
|
|
2486 |
ic.endComposition();
|
|
2487 |
}
|
|
2488 |
Reader r = importFlavor.getReaderForText(t);
|
|
2489 |
|
|
2490 |
if (modeBetween) {
|
|
2491 |
Caret caret = c.getCaret();
|
|
2492 |
if (caret instanceof DefaultCaret) {
|
|
2493 |
((DefaultCaret)caret).setDot(pos, dropBias);
|
|
2494 |
} else {
|
|
2495 |
c.setCaretPosition(pos);
|
|
2496 |
}
|
|
2497 |
}
|
|
2498 |
|
|
2499 |
handleReaderImport(r, c, useRead);
|
|
2500 |
|
|
2501 |
if (isDrop) {
|
|
2502 |
c.requestFocus();
|
|
2503 |
Caret caret = c.getCaret();
|
|
2504 |
if (caret instanceof DefaultCaret) {
|
|
2505 |
int newPos = caret.getDot();
|
|
2506 |
Position.Bias newBias = ((DefaultCaret)caret).getDotBias();
|
|
2507 |
|
|
2508 |
((DefaultCaret)caret).setDot(pos, dropBias);
|
|
2509 |
((DefaultCaret)caret).moveDot(newPos, newBias);
|
|
2510 |
} else {
|
|
2511 |
c.select(pos, c.getCaretPosition());
|
|
2512 |
}
|
|
2513 |
}
|
|
2514 |
|
|
2515 |
imported = true;
|
|
2516 |
} catch (UnsupportedFlavorException ufe) {
|
|
2517 |
} catch (BadLocationException ble) {
|
|
2518 |
} catch (IOException ioe) {
|
|
2519 |
}
|
|
2520 |
}
|
|
2521 |
return imported;
|
|
2522 |
}
|
|
2523 |
|
|
2524 |
/**
|
|
2525 |
* This method indicates if a component would accept an import of the given
|
|
2526 |
* set of data flavors prior to actually attempting to import it.
|
|
2527 |
*
|
|
2528 |
* @param comp The component to receive the transfer. This
|
|
2529 |
* argument is provided to enable sharing of TransferHandlers by
|
|
2530 |
* multiple components.
|
|
2531 |
* @param flavors The data formats available
|
|
2532 |
* @return true if the data can be inserted into the component, false otherwise.
|
|
2533 |
*/
|
|
2534 |
public boolean canImport(JComponent comp, DataFlavor[] flavors) {
|
|
2535 |
JTextComponent c = (JTextComponent)comp;
|
|
2536 |
if (!(c.isEditable() && c.isEnabled())) {
|
|
2537 |
return false;
|
|
2538 |
}
|
|
2539 |
return (getImportFlavor(flavors, c) != null);
|
|
2540 |
}
|
|
2541 |
|
|
2542 |
/**
|
|
2543 |
* A possible implementation of the Transferable interface
|
|
2544 |
* for text components. For a JEditorPane with a rich set
|
|
2545 |
* of EditorKit implementations, conversions could be made
|
|
2546 |
* giving a wider set of formats. This is implemented to
|
|
2547 |
* offer up only the active content type and text/plain
|
|
2548 |
* (if that is not the active format) since that can be
|
|
2549 |
* extracted from other formats.
|
|
2550 |
*/
|
|
2551 |
static class TextTransferable extends BasicTransferable {
|
|
2552 |
|
|
2553 |
TextTransferable(JTextComponent c, int start, int end) {
|
|
2554 |
super(null, null);
|
|
2555 |
|
|
2556 |
this.c = c;
|
|
2557 |
|
|
2558 |
Document doc = c.getDocument();
|
|
2559 |
|
|
2560 |
try {
|
|
2561 |
p0 = doc.createPosition(start);
|
|
2562 |
p1 = doc.createPosition(end);
|
|
2563 |
|
|
2564 |
plainData = c.getSelectedText();
|
|
2565 |
|
|
2566 |
if (c instanceof JEditorPane) {
|
|
2567 |
JEditorPane ep = (JEditorPane)c;
|
|
2568 |
|
|
2569 |
mimeType = ep.getContentType();
|
|
2570 |
|
|
2571 |
if (mimeType.startsWith("text/plain")) {
|
|
2572 |
return;
|
|
2573 |
}
|
|
2574 |
|
|
2575 |
StringWriter sw = new StringWriter(p1.getOffset() - p0.getOffset());
|
|
2576 |
ep.getEditorKit().write(sw, doc, p0.getOffset(), p1.getOffset() - p0.getOffset());
|
|
2577 |
|
|
2578 |
if (mimeType.startsWith("text/html")) {
|
|
2579 |
htmlData = sw.toString();
|
|
2580 |
} else {
|
|
2581 |
richText = sw.toString();
|
|
2582 |
}
|
|
2583 |
}
|
|
2584 |
} catch (BadLocationException ble) {
|
|
2585 |
} catch (IOException ioe) {
|
|
2586 |
}
|
|
2587 |
}
|
|
2588 |
|
|
2589 |
void removeText() {
|
|
2590 |
if ((p0 != null) && (p1 != null) && (p0.getOffset() != p1.getOffset())) {
|
|
2591 |
try {
|
|
2592 |
Document doc = c.getDocument();
|
|
2593 |
doc.remove(p0.getOffset(), p1.getOffset() - p0.getOffset());
|
|
2594 |
} catch (BadLocationException e) {
|
|
2595 |
}
|
|
2596 |
}
|
|
2597 |
}
|
|
2598 |
|
|
2599 |
// ---- EditorKit other than plain or HTML text -----------------------
|
|
2600 |
|
|
2601 |
/**
|
|
2602 |
* If the EditorKit is not for text/plain or text/html, that format
|
|
2603 |
* is supported through the "richer flavors" part of BasicTransferable.
|
|
2604 |
*/
|
|
2605 |
protected DataFlavor[] getRicherFlavors() {
|
|
2606 |
if (richText == null) {
|
|
2607 |
return null;
|
|
2608 |
}
|
|
2609 |
|
|
2610 |
try {
|
|
2611 |
DataFlavor[] flavors = new DataFlavor[3];
|
|
2612 |
flavors[0] = new DataFlavor(mimeType + ";class=java.lang.String");
|
|
2613 |
flavors[1] = new DataFlavor(mimeType + ";class=java.io.Reader");
|
|
2614 |
flavors[2] = new DataFlavor(mimeType + ";class=java.io.InputStream;charset=unicode");
|
|
2615 |
return flavors;
|
|
2616 |
} catch (ClassNotFoundException cle) {
|
|
2617 |
// fall through to unsupported (should not happen)
|
|
2618 |
}
|
|
2619 |
|
|
2620 |
return null;
|
|
2621 |
}
|
|
2622 |
|
|
2623 |
/**
|
|
2624 |
* The only richer format supported is the file list flavor
|
|
2625 |
*/
|
|
2626 |
protected Object getRicherData(DataFlavor flavor) throws UnsupportedFlavorException {
|
|
2627 |
if (richText == null) {
|
|
2628 |
return null;
|
|
2629 |
}
|
|
2630 |
|
|
2631 |
if (String.class.equals(flavor.getRepresentationClass())) {
|
|
2632 |
return richText;
|
|
2633 |
} else if (Reader.class.equals(flavor.getRepresentationClass())) {
|
|
2634 |
return new StringReader(richText);
|
|
2635 |
} else if (InputStream.class.equals(flavor.getRepresentationClass())) {
|
|
2636 |
return new StringBufferInputStream(richText);
|
|
2637 |
}
|
|
2638 |
throw new UnsupportedFlavorException(flavor);
|
|
2639 |
}
|
|
2640 |
|
|
2641 |
Position p0;
|
|
2642 |
Position p1;
|
|
2643 |
String mimeType;
|
|
2644 |
String richText;
|
|
2645 |
JTextComponent c;
|
|
2646 |
}
|
|
2647 |
|
|
2648 |
}
|
|
2649 |
|
|
2650 |
}
|