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/*
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* Copyright 1999-2006 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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package javax.swing;
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import java.applet.Applet;
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import java.awt.*;
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import java.awt.event.WindowAdapter;
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import java.awt.event.WindowEvent;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import static javax.swing.ClientPropertyKey.PopupFactory_FORCE_HEAVYWEIGHT_POPUP;
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/**
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* <code>PopupFactory</code>, as the name implies, is used to obtain
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* instances of <code>Popup</code>s. <code>Popup</code>s are used to
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* display a <code>Component</code> above all other <code>Component</code>s
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* in a particular containment hierarchy. The general contract is that
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* once you have obtained a <code>Popup</code> from a
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* <code>PopupFactory</code>, you must invoke <code>hide</code> on the
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* <code>Popup</code>. The typical usage is:
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* <pre>
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* PopupFactory factory = PopupFactory.getSharedInstance();
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* Popup popup = factory.getPopup(owner, contents, x, y);
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* popup.show();
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* ...
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* popup.hide();
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* </pre>
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*
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* @see Popup
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*
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* @since 1.4
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*/
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public class PopupFactory {
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/**
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* The shared instanceof <code>PopupFactory</code> is per
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* <code>AppContext</code>. This is the key used in the
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* <code>AppContext</code> to locate the <code>PopupFactory</code>.
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*/
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private static final Object SharedInstanceKey =
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new StringBuffer("PopupFactory.SharedInstanceKey");
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/**
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* Max number of items to store in any one particular cache.
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*/
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private static final int MAX_CACHE_SIZE = 5;
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/**
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* Key used to indicate a light weight popup should be used.
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*/
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static final int LIGHT_WEIGHT_POPUP = 0;
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/**
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* Key used to indicate a medium weight Popup should be used.
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*/
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static final int MEDIUM_WEIGHT_POPUP = 1;
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/*
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* Key used to indicate a heavy weight Popup should be used.
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*/
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static final int HEAVY_WEIGHT_POPUP = 2;
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/**
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* Default type of Popup to create.
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*/
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private int popupType = LIGHT_WEIGHT_POPUP;
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/**
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* Sets the <code>PopupFactory</code> that will be used to obtain
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* <code>Popup</code>s.
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* This will throw an <code>IllegalArgumentException</code> if
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* <code>factory</code> is null.
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*
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* @param factory Shared PopupFactory
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* @exception IllegalArgumentException if <code>factory</code> is null
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* @see #getPopup
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*/
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public static void setSharedInstance(PopupFactory factory) {
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if (factory == null) {
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throw new IllegalArgumentException("PopupFactory can not be null");
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}
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SwingUtilities.appContextPut(SharedInstanceKey, factory);
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}
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/**
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* Returns the shared <code>PopupFactory</code> which can be used
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* to obtain <code>Popup</code>s.
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*
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* @return Shared PopupFactory
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*/
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public static PopupFactory getSharedInstance() {
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PopupFactory factory = (PopupFactory)SwingUtilities.appContextGet(
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SharedInstanceKey);
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if (factory == null) {
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factory = new PopupFactory();
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setSharedInstance(factory);
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}
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return factory;
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}
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/**
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* Provides a hint as to the type of <code>Popup</code> that should
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* be created.
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*/
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void setPopupType(int type) {
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popupType = type;
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}
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/**
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* Returns the preferred type of Popup to create.
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*/
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int getPopupType() {
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return popupType;
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}
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/**
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* Creates a <code>Popup</code> for the Component <code>owner</code>
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* containing the Component <code>contents</code>. <code>owner</code>
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* is used to determine which <code>Window</code> the new
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* <code>Popup</code> will parent the <code>Component</code> the
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* <code>Popup</code> creates to. A null <code>owner</code> implies there
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* is no valid parent. <code>x</code> and
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* <code>y</code> specify the preferred initial location to place
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* the <code>Popup</code> at. Based on screen size, or other paramaters,
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* the <code>Popup</code> may not display at <code>x</code> and
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* <code>y</code>.
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*
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* @param owner Component mouse coordinates are relative to, may be null
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* @param contents Contents of the Popup
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* @param x Initial x screen coordinate
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* @param y Initial y screen coordinate
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* @exception IllegalArgumentException if contents is null
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* @return Popup containing Contents
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*/
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public Popup getPopup(Component owner, Component contents,
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int x, int y) throws IllegalArgumentException {
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if (contents == null) {
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throw new IllegalArgumentException(
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"Popup.getPopup must be passed non-null contents");
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}
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int popupType = getPopupType(owner, contents, x, y);
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Popup popup = getPopup(owner, contents, x, y, popupType);
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if (popup == null) {
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// Didn't fit, force to heavy.
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popup = getPopup(owner, contents, x, y, HEAVY_WEIGHT_POPUP);
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}
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return popup;
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}
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/**
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* Returns the popup type to use for the specified parameters.
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*/
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private int getPopupType(Component owner, Component contents,
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int ownerX, int ownerY) {
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int popupType = getPopupType();
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if (owner == null || invokerInHeavyWeightPopup(owner)) {
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popupType = HEAVY_WEIGHT_POPUP;
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}
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else if (popupType == LIGHT_WEIGHT_POPUP &&
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!(contents instanceof JToolTip) &&
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!(contents instanceof JPopupMenu)) {
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popupType = MEDIUM_WEIGHT_POPUP;
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}
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// Check if the parent component is an option pane. If so we need to
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// force a heavy weight popup in order to have event dispatching work
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// correctly.
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Component c = owner;
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while (c != null) {
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if (c instanceof JComponent) {
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if (((JComponent)c).getClientProperty(
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PopupFactory_FORCE_HEAVYWEIGHT_POPUP) == Boolean.TRUE) {
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popupType = HEAVY_WEIGHT_POPUP;
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break;
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}
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}
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c = c.getParent();
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}
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return popupType;
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}
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/**
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* Obtains the appropriate <code>Popup</code> based on
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* <code>popupType</code>.
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*/
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private Popup getPopup(Component owner, Component contents,
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int ownerX, int ownerY, int popupType) {
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if (GraphicsEnvironment.isHeadless()) {
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return getHeadlessPopup(owner, contents, ownerX, ownerY);
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}
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switch(popupType) {
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case LIGHT_WEIGHT_POPUP:
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return getLightWeightPopup(owner, contents, ownerX, ownerY);
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case MEDIUM_WEIGHT_POPUP:
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return getMediumWeightPopup(owner, contents, ownerX, ownerY);
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case HEAVY_WEIGHT_POPUP:
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return getHeavyWeightPopup(owner, contents, ownerX, ownerY);
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}
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return null;
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}
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/**
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* Creates a headless popup
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*/
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private Popup getHeadlessPopup(Component owner, Component contents,
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int ownerX, int ownerY) {
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return HeadlessPopup.getHeadlessPopup(owner, contents, ownerX, ownerY);
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}
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/**
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* Creates a light weight popup.
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*/
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private Popup getLightWeightPopup(Component owner, Component contents,
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int ownerX, int ownerY) {
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return LightWeightPopup.getLightWeightPopup(owner, contents, ownerX,
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ownerY);
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}
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/**
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* Creates a medium weight popup.
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*/
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private Popup getMediumWeightPopup(Component owner, Component contents,
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int ownerX, int ownerY) {
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return MediumWeightPopup.getMediumWeightPopup(owner, contents,
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ownerX, ownerY);
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}
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/**
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* Creates a heavy weight popup.
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*/
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private Popup getHeavyWeightPopup(Component owner, Component contents,
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int ownerX, int ownerY) {
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if (GraphicsEnvironment.isHeadless()) {
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return getMediumWeightPopup(owner, contents, ownerX, ownerY);
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}
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return HeavyWeightPopup.getHeavyWeightPopup(owner, contents, ownerX,
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ownerY);
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}
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/**
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* Returns true if the Component <code>i</code> inside a heavy weight
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* <code>Popup</code>.
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*/
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private boolean invokerInHeavyWeightPopup(Component i) {
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if (i != null) {
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Container parent;
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for(parent = i.getParent() ; parent != null ; parent =
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parent.getParent()) {
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if (parent instanceof Popup.HeavyWeightWindow) {
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return true;
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}
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}
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}
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return false;
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}
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/**
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* Popup implementation that uses a Window as the popup.
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*/
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private static class HeavyWeightPopup extends Popup {
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private static final Object heavyWeightPopupCacheKey =
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new StringBuffer("PopupFactory.heavyWeightPopupCache");
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/**
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* Returns either a new or recycled <code>Popup</code> containing
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* the specified children.
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*/
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static Popup getHeavyWeightPopup(Component owner, Component contents,
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int ownerX, int ownerY) {
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Window window = (owner != null) ? SwingUtilities.
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getWindowAncestor(owner) : null;
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HeavyWeightPopup popup = null;
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if (window != null) {
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popup = getRecycledHeavyWeightPopup(window);
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}
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boolean focusPopup = false;
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if(contents != null && contents.isFocusable()) {
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if(contents instanceof JPopupMenu) {
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JPopupMenu jpm = (JPopupMenu) contents;
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Component popComps[] = jpm.getComponents();
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for(int i=0;i<popComps.length;i++) {
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if(!(popComps[i] instanceof MenuElement) &&
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!(popComps[i] instanceof JSeparator)) {
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focusPopup = true;
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break;
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}
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}
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}
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}
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if (popup == null ||
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((JWindow) popup.getComponent())
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.getFocusableWindowState() != focusPopup) {
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if(popup != null) {
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// The recycled popup can't serve us well
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// dispose it and create new one
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popup._dispose();
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}
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popup = new HeavyWeightPopup();
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}
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popup.reset(owner, contents, ownerX, ownerY);
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if(focusPopup) {
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JWindow wnd = (JWindow) popup.getComponent();
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wnd.setFocusableWindowState(true);
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// Set window name. We need this in BasicPopupMenuUI
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// to identify focusable popup window.
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wnd.setName("###focusableSwingPopup###");
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}
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return popup;
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}
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/**
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* Returns a previously disposed heavy weight <code>Popup</code>
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* associated with <code>window</code>. This will return null if
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* there is no <code>HeavyWeightPopup</code> associated with
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* <code>window</code>.
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*/
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private static HeavyWeightPopup getRecycledHeavyWeightPopup(Window w) {
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synchronized (HeavyWeightPopup.class) {
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List cache;
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Map heavyPopupCache = getHeavyWeightPopupCache();
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if (heavyPopupCache.containsKey(w)) {
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cache = (List)heavyPopupCache.get(w);
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} else {
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return null;
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}
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int c;
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if ((c = cache.size()) > 0) {
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HeavyWeightPopup r = (HeavyWeightPopup)cache.get(0);
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cache.remove(0);
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return r;
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}
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return null;
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}
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}
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/**
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* Returns the cache to use for heavy weight popups. Maps from
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* <code>Window</code> to a <code>List</code> of
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* <code>HeavyWeightPopup</code>s.
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*/
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private static Map getHeavyWeightPopupCache() {
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synchronized (HeavyWeightPopup.class) {
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Map cache = (Map)SwingUtilities.appContextGet(
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heavyWeightPopupCacheKey);
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387 |
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if (cache == null) {
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cache = new HashMap(2);
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SwingUtilities.appContextPut(heavyWeightPopupCacheKey,
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cache);
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}
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return cache;
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}
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}
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/**
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* Recycles the passed in <code>HeavyWeightPopup</code>.
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*/
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private static void recycleHeavyWeightPopup(HeavyWeightPopup popup) {
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synchronized (HeavyWeightPopup.class) {
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List cache;
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Object window = SwingUtilities.getWindowAncestor(
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popup.getComponent());
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Map heavyPopupCache = getHeavyWeightPopupCache();
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406 |
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if (window instanceof Popup.DefaultFrame ||
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!((Window)window).isVisible()) {
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409 |
// If the Window isn't visible, we don't cache it as we
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410 |
// likely won't ever get a windowClosed event to clean up.
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411 |
// We also don't cache DefaultFrames as this indicates
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412 |
// there wasn't a valid Window parent, and thus we don't
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// know when to clean up.
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popup._dispose();
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return;
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} else if (heavyPopupCache.containsKey(window)) {
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cache = (List)heavyPopupCache.get(window);
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} else {
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cache = new ArrayList();
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heavyPopupCache.put(window, cache);
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421 |
// Clean up if the Window is closed
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422 |
final Window w = (Window)window;
|
|
423 |
|
|
424 |
w.addWindowListener(new WindowAdapter() {
|
|
425 |
public void windowClosed(WindowEvent e) {
|
|
426 |
List popups;
|
|
427 |
|
|
428 |
synchronized(HeavyWeightPopup.class) {
|
|
429 |
Map heavyPopupCache2 =
|
|
430 |
getHeavyWeightPopupCache();
|
|
431 |
|
|
432 |
popups = (List)heavyPopupCache2.remove(w);
|
|
433 |
}
|
|
434 |
if (popups != null) {
|
|
435 |
for (int counter = popups.size() - 1;
|
|
436 |
counter >= 0; counter--) {
|
|
437 |
((HeavyWeightPopup)popups.get(counter)).
|
|
438 |
_dispose();
|
|
439 |
}
|
|
440 |
}
|
|
441 |
}
|
|
442 |
});
|
|
443 |
}
|
|
444 |
|
|
445 |
if(cache.size() < MAX_CACHE_SIZE) {
|
|
446 |
cache.add(popup);
|
|
447 |
} else {
|
|
448 |
popup._dispose();
|
|
449 |
}
|
|
450 |
}
|
|
451 |
}
|
|
452 |
|
|
453 |
//
|
|
454 |
// Popup methods
|
|
455 |
//
|
|
456 |
public void hide() {
|
|
457 |
super.hide();
|
|
458 |
recycleHeavyWeightPopup(this);
|
|
459 |
}
|
|
460 |
|
|
461 |
/**
|
|
462 |
* As we recycle the <code>Window</code>, we don't want to dispose it,
|
|
463 |
* thus this method does nothing, instead use <code>_dipose</code>
|
|
464 |
* which will handle the disposing.
|
|
465 |
*/
|
|
466 |
void dispose() {
|
|
467 |
}
|
|
468 |
|
|
469 |
void _dispose() {
|
|
470 |
super.dispose();
|
|
471 |
}
|
|
472 |
}
|
|
473 |
|
|
474 |
|
|
475 |
|
|
476 |
/**
|
|
477 |
* ContainerPopup consolidates the common code used in the light/medium
|
|
478 |
* weight implementations of <code>Popup</code>.
|
|
479 |
*/
|
|
480 |
private static class ContainerPopup extends Popup {
|
|
481 |
/** Component we are to be added to. */
|
|
482 |
Component owner;
|
|
483 |
/** Desired x location. */
|
|
484 |
int x;
|
|
485 |
/** Desired y location. */
|
|
486 |
int y;
|
|
487 |
|
|
488 |
public void hide() {
|
|
489 |
Component component = getComponent();
|
|
490 |
|
|
491 |
if (component != null) {
|
|
492 |
Container parent = component.getParent();
|
|
493 |
|
|
494 |
if (parent != null) {
|
|
495 |
Rectangle bounds = component.getBounds();
|
|
496 |
|
|
497 |
parent.remove(component);
|
|
498 |
parent.repaint(bounds.x, bounds.y, bounds.width,
|
|
499 |
bounds.height);
|
|
500 |
}
|
|
501 |
}
|
|
502 |
owner = null;
|
|
503 |
}
|
|
504 |
public void pack() {
|
|
505 |
Component component = getComponent();
|
|
506 |
|
|
507 |
if (component != null) {
|
|
508 |
component.setSize(component.getPreferredSize());
|
|
509 |
}
|
|
510 |
}
|
|
511 |
|
|
512 |
void reset(Component owner, Component contents, int ownerX,
|
|
513 |
int ownerY) {
|
|
514 |
if ((owner instanceof JFrame) || (owner instanceof JDialog) ||
|
|
515 |
(owner instanceof JWindow)) {
|
|
516 |
// Force the content to be added to the layered pane, otherwise
|
|
517 |
// we'll get an exception when adding to the RootPaneContainer.
|
|
518 |
owner = ((RootPaneContainer)owner).getLayeredPane();
|
|
519 |
}
|
|
520 |
super.reset(owner, contents, ownerX, ownerY);
|
|
521 |
|
|
522 |
x = ownerX;
|
|
523 |
y = ownerY;
|
|
524 |
this.owner = owner;
|
|
525 |
}
|
|
526 |
|
|
527 |
boolean overlappedByOwnedWindow() {
|
|
528 |
Component component = getComponent();
|
|
529 |
if(owner != null && component != null) {
|
|
530 |
Window w = SwingUtilities.getWindowAncestor(owner);
|
|
531 |
if (w == null) {
|
|
532 |
return false;
|
|
533 |
}
|
|
534 |
Window[] ownedWindows = w.getOwnedWindows();
|
|
535 |
if(ownedWindows != null) {
|
|
536 |
Rectangle bnd = component.getBounds();
|
|
537 |
for(int i=0; i<ownedWindows.length;i++) {
|
|
538 |
Window owned = ownedWindows[i];
|
|
539 |
if (owned.isVisible() &&
|
|
540 |
bnd.intersects(owned.getBounds())) {
|
|
541 |
|
|
542 |
return true;
|
|
543 |
}
|
|
544 |
}
|
|
545 |
}
|
|
546 |
}
|
|
547 |
return false;
|
|
548 |
}
|
|
549 |
|
|
550 |
/**
|
|
551 |
* Returns true if the Popup can fit on the screen.
|
|
552 |
*/
|
|
553 |
boolean fitsOnScreen() {
|
|
554 |
Component component = getComponent();
|
|
555 |
|
|
556 |
if (owner != null && component != null) {
|
|
557 |
Container parent;
|
|
558 |
int width = component.getWidth();
|
|
559 |
int height = component.getHeight();
|
|
560 |
for(parent = owner.getParent(); parent != null ;
|
|
561 |
parent = parent.getParent()) {
|
|
562 |
if (parent instanceof JFrame ||
|
|
563 |
parent instanceof JDialog ||
|
|
564 |
parent instanceof JWindow) {
|
|
565 |
|
|
566 |
Rectangle r = parent.getBounds();
|
|
567 |
Insets i = parent.getInsets();
|
|
568 |
r.x += i.left;
|
|
569 |
r.y += i.top;
|
|
570 |
r.width -= (i.left + i.right);
|
|
571 |
r.height -= (i.top + i.bottom);
|
|
572 |
|
|
573 |
GraphicsConfiguration gc = parent.getGraphicsConfiguration();
|
|
574 |
Rectangle popupArea = getContainerPopupArea(gc);
|
|
575 |
return r.intersection(popupArea).contains(x, y, width, height);
|
|
576 |
|
|
577 |
} else if (parent instanceof JApplet) {
|
|
578 |
Rectangle r = parent.getBounds();
|
|
579 |
Point p = parent.getLocationOnScreen();
|
|
580 |
|
|
581 |
r.x = p.x;
|
|
582 |
r.y = p.y;
|
|
583 |
return r.contains(x, y, width, height);
|
|
584 |
} else if (parent instanceof Window ||
|
|
585 |
parent instanceof Applet) {
|
|
586 |
// No suitable swing component found
|
|
587 |
break;
|
|
588 |
}
|
|
589 |
}
|
|
590 |
}
|
|
591 |
return false;
|
|
592 |
}
|
|
593 |
|
|
594 |
Rectangle getContainerPopupArea(GraphicsConfiguration gc) {
|
|
595 |
Rectangle screenBounds;
|
|
596 |
Toolkit toolkit = Toolkit.getDefaultToolkit();
|
|
597 |
Insets insets;
|
|
598 |
if(gc != null) {
|
|
599 |
// If we have GraphicsConfiguration use it
|
|
600 |
// to get screen bounds
|
|
601 |
screenBounds = gc.getBounds();
|
|
602 |
insets = toolkit.getScreenInsets(gc);
|
|
603 |
} else {
|
|
604 |
// If we don't have GraphicsConfiguration use primary screen
|
|
605 |
screenBounds = new Rectangle(toolkit.getScreenSize());
|
|
606 |
insets = new Insets(0, 0, 0, 0);
|
|
607 |
}
|
|
608 |
// Take insets into account
|
|
609 |
screenBounds.x += insets.left;
|
|
610 |
screenBounds.y += insets.top;
|
|
611 |
screenBounds.width -= (insets.left + insets.right);
|
|
612 |
screenBounds.height -= (insets.top + insets.bottom);
|
|
613 |
return screenBounds;
|
|
614 |
}
|
|
615 |
}
|
|
616 |
|
|
617 |
|
|
618 |
/**
|
|
619 |
* Popup implementation that is used in headless environment.
|
|
620 |
*/
|
|
621 |
private static class HeadlessPopup extends ContainerPopup {
|
|
622 |
static Popup getHeadlessPopup(Component owner, Component contents,
|
|
623 |
int ownerX, int ownerY) {
|
|
624 |
HeadlessPopup popup = new HeadlessPopup();
|
|
625 |
popup.reset(owner, contents, ownerX, ownerY);
|
|
626 |
return popup;
|
|
627 |
}
|
|
628 |
|
|
629 |
Component createComponent(Component owner) {
|
|
630 |
return new Panel(new BorderLayout());
|
|
631 |
}
|
|
632 |
|
|
633 |
public void show() {
|
|
634 |
}
|
|
635 |
public void hide() {
|
|
636 |
}
|
|
637 |
}
|
|
638 |
|
|
639 |
|
|
640 |
/**
|
|
641 |
* Popup implementation that uses a JPanel as the popup.
|
|
642 |
*/
|
|
643 |
private static class LightWeightPopup extends ContainerPopup {
|
|
644 |
private static final Object lightWeightPopupCacheKey =
|
|
645 |
new StringBuffer("PopupFactory.lightPopupCache");
|
|
646 |
|
|
647 |
/**
|
|
648 |
* Returns a light weight <code>Popup</code> implementation. If
|
|
649 |
* the <code>Popup</code> needs more space that in available in
|
|
650 |
* <code>owner</code>, this will return null.
|
|
651 |
*/
|
|
652 |
static Popup getLightWeightPopup(Component owner, Component contents,
|
|
653 |
int ownerX, int ownerY) {
|
|
654 |
LightWeightPopup popup = getRecycledLightWeightPopup();
|
|
655 |
|
|
656 |
if (popup == null) {
|
|
657 |
popup = new LightWeightPopup();
|
|
658 |
}
|
|
659 |
popup.reset(owner, contents, ownerX, ownerY);
|
|
660 |
if (!popup.fitsOnScreen() ||
|
|
661 |
popup.overlappedByOwnedWindow()) {
|
|
662 |
popup.hide();
|
|
663 |
return null;
|
|
664 |
}
|
|
665 |
return popup;
|
|
666 |
}
|
|
667 |
|
|
668 |
/**
|
|
669 |
* Returns the cache to use for heavy weight popups.
|
|
670 |
*/
|
|
671 |
private static List getLightWeightPopupCache() {
|
|
672 |
List cache = (List)SwingUtilities.appContextGet(
|
|
673 |
lightWeightPopupCacheKey);
|
|
674 |
if (cache == null) {
|
|
675 |
cache = new ArrayList();
|
|
676 |
SwingUtilities.appContextPut(lightWeightPopupCacheKey, cache);
|
|
677 |
}
|
|
678 |
return cache;
|
|
679 |
}
|
|
680 |
|
|
681 |
/**
|
|
682 |
* Recycles the LightWeightPopup <code>popup</code>.
|
|
683 |
*/
|
|
684 |
private static void recycleLightWeightPopup(LightWeightPopup popup) {
|
|
685 |
synchronized (LightWeightPopup.class) {
|
|
686 |
List lightPopupCache = getLightWeightPopupCache();
|
|
687 |
if (lightPopupCache.size() < MAX_CACHE_SIZE) {
|
|
688 |
lightPopupCache.add(popup);
|
|
689 |
}
|
|
690 |
}
|
|
691 |
}
|
|
692 |
|
|
693 |
/**
|
|
694 |
* Returns a previously used <code>LightWeightPopup</code>, or null
|
|
695 |
* if none of the popups have been recycled.
|
|
696 |
*/
|
|
697 |
private static LightWeightPopup getRecycledLightWeightPopup() {
|
|
698 |
synchronized (LightWeightPopup.class) {
|
|
699 |
List lightPopupCache = getLightWeightPopupCache();
|
|
700 |
int c;
|
|
701 |
if((c = lightPopupCache.size()) > 0) {
|
|
702 |
LightWeightPopup r = (LightWeightPopup)lightPopupCache.
|
|
703 |
get(0);
|
|
704 |
lightPopupCache.remove(0);
|
|
705 |
return r;
|
|
706 |
}
|
|
707 |
return null;
|
|
708 |
}
|
|
709 |
}
|
|
710 |
|
|
711 |
|
|
712 |
|
|
713 |
//
|
|
714 |
// Popup methods
|
|
715 |
//
|
|
716 |
public void hide() {
|
|
717 |
super.hide();
|
|
718 |
|
|
719 |
Container component = (Container)getComponent();
|
|
720 |
|
|
721 |
component.removeAll();
|
|
722 |
recycleLightWeightPopup(this);
|
|
723 |
}
|
|
724 |
public void show() {
|
|
725 |
Container parent = null;
|
|
726 |
|
|
727 |
if (owner != null) {
|
|
728 |
parent = (owner instanceof Container? (Container)owner : owner.getParent());
|
|
729 |
}
|
|
730 |
|
|
731 |
// Try to find a JLayeredPane and Window to add
|
|
732 |
for (Container p = parent; p != null; p = p.getParent()) {
|
|
733 |
if (p instanceof JRootPane) {
|
|
734 |
if (p.getParent() instanceof JInternalFrame) {
|
|
735 |
continue;
|
|
736 |
}
|
|
737 |
parent = ((JRootPane)p).getLayeredPane();
|
|
738 |
// Continue, so that if there is a higher JRootPane, we'll
|
|
739 |
// pick it up.
|
|
740 |
} else if(p instanceof Window) {
|
|
741 |
if (parent == null) {
|
|
742 |
parent = p;
|
|
743 |
}
|
|
744 |
break;
|
|
745 |
} else if (p instanceof JApplet) {
|
|
746 |
// Painting code stops at Applets, we don't want
|
|
747 |
// to add to a Component above an Applet otherwise
|
|
748 |
// you'll never see it painted.
|
|
749 |
break;
|
|
750 |
}
|
|
751 |
}
|
|
752 |
|
|
753 |
Point p = SwingUtilities.convertScreenLocationToParent(parent, x,
|
|
754 |
y);
|
|
755 |
Component component = getComponent();
|
|
756 |
|
|
757 |
component.setLocation(p.x, p.y);
|
|
758 |
if (parent instanceof JLayeredPane) {
|
|
759 |
((JLayeredPane)parent).add(component,
|
|
760 |
JLayeredPane.POPUP_LAYER, 0);
|
|
761 |
} else {
|
|
762 |
parent.add(component);
|
|
763 |
}
|
|
764 |
}
|
|
765 |
|
|
766 |
Component createComponent(Component owner) {
|
|
767 |
JComponent component = new JPanel(new BorderLayout(), true);
|
|
768 |
|
|
769 |
component.setOpaque(true);
|
|
770 |
return component;
|
|
771 |
}
|
|
772 |
|
|
773 |
//
|
|
774 |
// Local methods
|
|
775 |
//
|
|
776 |
|
|
777 |
/**
|
|
778 |
* Resets the <code>Popup</code> to an initial state.
|
|
779 |
*/
|
|
780 |
void reset(Component owner, Component contents, int ownerX,
|
|
781 |
int ownerY) {
|
|
782 |
super.reset(owner, contents, ownerX, ownerY);
|
|
783 |
|
|
784 |
JComponent component = (JComponent)getComponent();
|
|
785 |
|
|
786 |
component.setOpaque(contents.isOpaque());
|
|
787 |
component.setLocation(ownerX, ownerY);
|
|
788 |
component.add(contents, BorderLayout.CENTER);
|
|
789 |
contents.invalidate();
|
|
790 |
pack();
|
|
791 |
}
|
|
792 |
}
|
|
793 |
|
|
794 |
|
|
795 |
/**
|
|
796 |
* Popup implementation that uses a Panel as the popup.
|
|
797 |
*/
|
|
798 |
private static class MediumWeightPopup extends ContainerPopup {
|
|
799 |
private static final Object mediumWeightPopupCacheKey =
|
|
800 |
new StringBuffer("PopupFactory.mediumPopupCache");
|
|
801 |
|
|
802 |
/** Child of the panel. The contents are added to this. */
|
|
803 |
private JRootPane rootPane;
|
|
804 |
|
|
805 |
|
|
806 |
/**
|
|
807 |
* Returns a medium weight <code>Popup</code> implementation. If
|
|
808 |
* the <code>Popup</code> needs more space that in available in
|
|
809 |
* <code>owner</code>, this will return null.
|
|
810 |
*/
|
|
811 |
static Popup getMediumWeightPopup(Component owner, Component contents,
|
|
812 |
int ownerX, int ownerY) {
|
|
813 |
MediumWeightPopup popup = getRecycledMediumWeightPopup();
|
|
814 |
|
|
815 |
if (popup == null) {
|
|
816 |
popup = new MediumWeightPopup();
|
|
817 |
}
|
|
818 |
popup.reset(owner, contents, ownerX, ownerY);
|
|
819 |
if (!popup.fitsOnScreen() ||
|
|
820 |
popup.overlappedByOwnedWindow()) {
|
|
821 |
popup.hide();
|
|
822 |
return null;
|
|
823 |
}
|
|
824 |
return popup;
|
|
825 |
}
|
|
826 |
|
|
827 |
/**
|
|
828 |
* Returns the cache to use for medium weight popups.
|
|
829 |
*/
|
|
830 |
private static List getMediumWeightPopupCache() {
|
|
831 |
List cache = (List)SwingUtilities.appContextGet(
|
|
832 |
mediumWeightPopupCacheKey);
|
|
833 |
|
|
834 |
if (cache == null) {
|
|
835 |
cache = new ArrayList();
|
|
836 |
SwingUtilities.appContextPut(mediumWeightPopupCacheKey, cache);
|
|
837 |
}
|
|
838 |
return cache;
|
|
839 |
}
|
|
840 |
|
|
841 |
/**
|
|
842 |
* Recycles the MediumWeightPopup <code>popup</code>.
|
|
843 |
*/
|
|
844 |
private static void recycleMediumWeightPopup(MediumWeightPopup popup) {
|
|
845 |
synchronized (MediumWeightPopup.class) {
|
|
846 |
List mediumPopupCache = getMediumWeightPopupCache();
|
|
847 |
if (mediumPopupCache.size() < MAX_CACHE_SIZE) {
|
|
848 |
mediumPopupCache.add(popup);
|
|
849 |
}
|
|
850 |
}
|
|
851 |
}
|
|
852 |
|
|
853 |
/**
|
|
854 |
* Returns a previously used <code>MediumWeightPopup</code>, or null
|
|
855 |
* if none of the popups have been recycled.
|
|
856 |
*/
|
|
857 |
private static MediumWeightPopup getRecycledMediumWeightPopup() {
|
|
858 |
synchronized (MediumWeightPopup.class) {
|
|
859 |
java.util.List mediumPopupCache =
|
|
860 |
getMediumWeightPopupCache();
|
|
861 |
int c;
|
|
862 |
if ((c=mediumPopupCache.size()) > 0) {
|
|
863 |
MediumWeightPopup r = (MediumWeightPopup)mediumPopupCache.
|
|
864 |
get(0);
|
|
865 |
mediumPopupCache.remove(0);
|
|
866 |
return r;
|
|
867 |
}
|
|
868 |
return null;
|
|
869 |
}
|
|
870 |
}
|
|
871 |
|
|
872 |
|
|
873 |
//
|
|
874 |
// Popup
|
|
875 |
//
|
|
876 |
|
|
877 |
public void hide() {
|
|
878 |
super.hide();
|
|
879 |
rootPane.getContentPane().removeAll();
|
|
880 |
recycleMediumWeightPopup(this);
|
|
881 |
}
|
|
882 |
public void show() {
|
|
883 |
Component component = getComponent();
|
|
884 |
Container parent = null;
|
|
885 |
|
|
886 |
if (owner != null) {
|
|
887 |
parent = owner.getParent();
|
|
888 |
}
|
|
889 |
/*
|
|
890 |
Find the top level window,
|
|
891 |
if it has a layered pane,
|
|
892 |
add to that, otherwise
|
|
893 |
add to the window. */
|
|
894 |
while (!(parent instanceof Window || parent instanceof Applet) &&
|
|
895 |
(parent!=null)) {
|
|
896 |
parent = parent.getParent();
|
|
897 |
}
|
|
898 |
// Set the visibility to false before adding to workaround a
|
|
899 |
// bug in Solaris in which the Popup gets added at the wrong
|
|
900 |
// location, which will result in a mouseExit, which will then
|
|
901 |
// result in the ToolTip being removed.
|
|
902 |
if (parent instanceof RootPaneContainer) {
|
|
903 |
parent = ((RootPaneContainer)parent).getLayeredPane();
|
|
904 |
Point p = SwingUtilities.convertScreenLocationToParent(parent,
|
|
905 |
x, y);
|
|
906 |
component.setVisible(false);
|
|
907 |
component.setLocation(p.x, p.y);
|
|
908 |
((JLayeredPane)parent).add(component, JLayeredPane.POPUP_LAYER,
|
|
909 |
0);
|
|
910 |
} else {
|
|
911 |
Point p = SwingUtilities.convertScreenLocationToParent(parent,
|
|
912 |
x, y);
|
|
913 |
|
|
914 |
component.setLocation(p.x, p.y);
|
|
915 |
component.setVisible(false);
|
|
916 |
parent.add(component);
|
|
917 |
}
|
|
918 |
component.setVisible(true);
|
|
919 |
}
|
|
920 |
|
|
921 |
Component createComponent(Component owner) {
|
|
922 |
Panel component = new MediumWeightComponent();
|
|
923 |
|
|
924 |
rootPane = new JRootPane();
|
|
925 |
// NOTE: this uses setOpaque vs LookAndFeel.installProperty as
|
|
926 |
// there is NO reason for the RootPane not to be opaque. For
|
|
927 |
// painting to work the contentPane must be opaque, therefor the
|
|
928 |
// RootPane can also be opaque.
|
|
929 |
rootPane.setOpaque(true);
|
|
930 |
component.add(rootPane, BorderLayout.CENTER);
|
|
931 |
return component;
|
|
932 |
}
|
|
933 |
|
|
934 |
/**
|
|
935 |
* Resets the <code>Popup</code> to an initial state.
|
|
936 |
*/
|
|
937 |
void reset(Component owner, Component contents, int ownerX,
|
|
938 |
int ownerY) {
|
|
939 |
super.reset(owner, contents, ownerX, ownerY);
|
|
940 |
|
|
941 |
Component component = getComponent();
|
|
942 |
|
|
943 |
component.setLocation(ownerX, ownerY);
|
|
944 |
rootPane.getContentPane().add(contents, BorderLayout.CENTER);
|
|
945 |
contents.invalidate();
|
|
946 |
component.validate();
|
|
947 |
pack();
|
|
948 |
}
|
|
949 |
|
|
950 |
|
|
951 |
// This implements SwingHeavyWeight so that repaints on it
|
|
952 |
// are processed by the RepaintManager and SwingPaintEventDispatcher.
|
|
953 |
private static class MediumWeightComponent extends Panel implements
|
|
954 |
SwingHeavyWeight {
|
|
955 |
MediumWeightComponent() {
|
|
956 |
super(new BorderLayout());
|
|
957 |
}
|
|
958 |
}
|
|
959 |
}
|
|
960 |
}
|