001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
028: * Microsystems, Inc. All Rights Reserved.
029: *
030: * If you wish your version of this file to be governed by only the CDDL
031: * or only the GPL Version 2, indicate your decision by adding
032: * "[Contributor] elects to include this software in this distribution
033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
034: * single choice of license, a recipient has the option to distribute
035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
037: * However, if you add GPL Version 2 code and therefore, elected the GPL
038: * Version 2 license, then the option applies only if the new code is
039: * made subject to such option by the copyright holder.
040: */
041:
042: package org.netbeans.modules.gsfret.navigation.base;
043:
044: import java.awt.event.ActionEvent;
045: import java.awt.event.ActionListener;
046: import java.awt.event.MouseEvent;
047: import javax.swing.JComponent;
048: import javax.swing.Timer;
049: import javax.swing.ToolTipManager;
050:
051: /**
052: * This file is originally from Retouche, the Java Support
053: * infrastructure in NetBeans. I have modified the file as little
054: * as possible to make merging Retouche fixes back as simple as
055: * possible.
056: * <p>
057: * Hack to invoke tooltip on given component on given position immediatelly
058: * at a request.
059: *
060: * XXX - hack is not reliable, could stop working in future JDK releases.
061: * Navigator should better handle tooltips totally itself,
062: * without Swing TooltipManager, to get rid of such hacks.
063: *
064: * @author Dafe Simonek
065: */
066: public final class TooltipHack implements ActionListener {
067:
068: private static TooltipHack instance;
069:
070: /** holds previous dismiss tooltip value */
071: private static int prevDismiss = -1;
072:
073: private TooltipHack() {
074: }
075:
076: /** Hack to invoke tooltip on given JComponent, with given dismiss delay.
077: * Triggers <br>
078: * <code>comp.getToolTipText(MouseEvent)</code> and
079: * <code>comp.getToolTipLocation(MouseEvent)</code> with fake mousemoved
080: * MouseEvent, set to given coordinates.
081: */
082: public static void invokeTip(JComponent comp, int x, int y,
083: int dismissDelay) {
084: final ToolTipManager ttm = ToolTipManager.sharedInstance();
085: final int prevInit = ttm.getInitialDelay();
086: prevDismiss = ttm.getDismissDelay();
087: ttm.setInitialDelay(0);
088: ttm.setDismissDelay(dismissDelay);
089:
090: MouseEvent fakeEvt = new MouseEvent(comp,
091: MouseEvent.MOUSE_MOVED, System.currentTimeMillis(), 0,
092: x, y, 0, false);
093: ttm.mouseMoved(fakeEvt);
094:
095: ttm.setInitialDelay(prevInit);
096: Timer timer = new Timer(20, instance());
097: timer.setRepeats(false);
098: timer.start();
099: }
100:
101: /** impl of ActionListener, reacts on timer and restores Dismiss value.
102: * Don't call from outside classes.
103: */
104: public void actionPerformed(ActionEvent e) {
105: if (prevDismiss > 0) {
106: ToolTipManager.sharedInstance()
107: .setDismissDelay(prevDismiss);
108: prevDismiss = -1;
109: }
110: }
111:
112: private static TooltipHack instance() {
113: if (instance == null) {
114: instance = new TooltipHack();
115: }
116: return instance;
117: }
118:
119: }
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