Source Code Cross Referenced for RootWindow.java in  » XML-UI » gui4j » org » gui4j » core » swing » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » XML UI » gui4j » org.gui4j.core.swing 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /* Copyright (c) 2004 Christopher M Butler
002:
003:        Permission is hereby granted, free of charge, to any person obtaining a copy of 
004:        this software and associated documentation files (the "Software"), to deal in the 
005:        Software without restriction, including without limitation the rights to use, 
006:        copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the 
007:        Software, and to permit persons to whom the Software is furnished to do so, subject 
008:        to the following conditions:
009:
010:        The above copyright notice and this permission notice shall be included in all 
011:        copies or substantial portions of the Software.
012:
013:        THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
014:        INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
015:        PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 
016:        HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF 
017:        CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE 
018:        OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
019:
020:        package org.gui4j.core.swing;
021:
022:        import java.awt.Component;
023:        import java.awt.Container;
024:        import java.awt.Frame;
025:        import java.awt.LayoutManager;
026:        import java.awt.Point;
027:        import java.awt.Rectangle;
028:        import java.awt.Window;
029:        import java.util.HashMap;
030:        import java.util.HashSet;
031:
032:        import javax.swing.JApplet;
033:        import javax.swing.JComponent;
034:        import javax.swing.JDialog;
035:        import javax.swing.JFrame;
036:        import javax.swing.JLayeredPane;
037:        import javax.swing.JRootPane;
038:        import javax.swing.JWindow;
039:        import javax.swing.SwingUtilities;
040:
041:        /**
042:         * This class provides an abstraction of root containers used in Swing.  It allows transparent use of 
043:         * methods common to <code>JFrame</code>, <code>JApplet</code>, <code>JWindow</code>, and 
044:         * <code>JDialog</code> without making an outward distinction between the different container types.  This
045:         * is accomplished by wrapping the root component.
046:         * 
047:         * @author Chris Butler
048:         */
049:        public class RootWindow {
050:            public static final Integer DEFAULT_MAXED_LAYER = new Integer(
051:                    JLayeredPane.PALETTE_LAYER.intValue() - 10);
052:            private static final HashMap MAP_BY_ROOT_CONTAINER = new HashMap();
053:            private LayoutManager maxedLayout;
054:            private Integer maximizationLayer;
055:            private Component root;
056:
057:            private static Component getRoot(Component c) {
058:                if (c == null)
059:                    return null;
060:
061:                if (isValidRootContainer(c))
062:                    return c;
063:
064:                Container parent = c.getParent();
065:                while (parent != null && !isValidRootContainer(parent))
066:                    parent = parent.getParent();
067:
068:                return parent;
069:            }
070:
071:            /**
072:             * Traverses the container hierarchy to locate the root container and returns corresponding 
073:             * <code>RootSwingContainer</code>.  If <code>c</code> is <code>null</code>, a <code>null</code>
074:             * reference is returned.
075:             * @param c the container whose root we wish to find
076:             * @return the enclosing <code>RootSwingcontainer</code>
077:             */
078:            public static RootWindow getRootContainer(Component c) {
079:                Component root = getRoot(c);
080:                if (!isValidRootContainer(root))
081:                    return null;
082:
083:                RootWindow container = (RootWindow) MAP_BY_ROOT_CONTAINER
084:                        .get(root);
085:                if (container == null) {
086:                    container = new RootWindow(root);
087:                    MAP_BY_ROOT_CONTAINER.put(root, container);
088:                }
089:
090:                if (container.getRootContainer() != root)
091:                    container.setRootContainer(root);
092:
093:                return container;
094:            }
095:
096:            /**
097:             * Indicates whether the supplied <code>Component</code> is, in fact, a root Swing container.
098:             * 
099:             * @param c the <code>Component</code> we wish to check 
100:             */
101:            public static boolean isValidRootContainer(Component c) {
102:                return c != null
103:                        && (c instanceof  JFrame || c instanceof  JApplet
104:                                || c instanceof  JWindow || c instanceof  JDialog);
105:            }
106:
107:            public static RootWindow[] getVisibleWindows() {
108:                Frame[] frames = Frame.getFrames();
109:                HashSet cache = new HashSet(frames.length);
110:                for (int i = 0; i < frames.length; i++)
111:                    populateWindowList(new RootWindow(frames[i]), cache, true);
112:                return (RootWindow[]) cache.toArray(new RootWindow[0]);
113:            }
114:
115:            private static void populateWindowList(RootWindow win,
116:                    HashSet winCache, boolean visOnly) {
117:                if (win == null || winCache.contains(win))
118:                    return;
119:
120:                if (visOnly && !win.getRootContainer().isVisible())
121:                    return;
122:
123:                winCache.add(win);
124:                Window[] children = win.getOwnedWindows();
125:                for (int i = 0; i < children.length; i++)
126:                    populateWindowList(new RootWindow(children[i]), winCache,
127:                            visOnly);
128:            }
129:
130:            /**
131:             * Creates a new <code>RootSwingContainer</code> wrapping the specified component.
132:             */
133:            protected RootWindow(Component root) {
134:                setMaximizationLayer(DEFAULT_MAXED_LAYER);
135:                setRootContainer(root);
136:            }
137:
138:            /**
139:             * Returns the <code>contentPane</code> object for the wrapped component.
140:             * @return the <code>contentPane</code> property
141:             */
142:            public Container getContentPane() {
143:                if (root instanceof  JFrame)
144:                    return ((JFrame) root).getContentPane();
145:                if (root instanceof  JApplet)
146:                    return ((JApplet) root).getContentPane();
147:                if (root instanceof  JWindow)
148:                    return ((JWindow) root).getContentPane();
149:                if (root instanceof  JDialog)
150:                    return ((JDialog) root).getContentPane();
151:                return null;
152:            }
153:
154:            /**
155:             * Returns the <code>glassPane</code> object for the wrapped component.
156:             * @return the <code>glassPane</code> property
157:             */
158:            public Component getGlassPane() {
159:                if (root instanceof  JFrame)
160:                    return ((JFrame) root).getGlassPane();
161:                if (root instanceof  JApplet)
162:                    return ((JApplet) root).getGlassPane();
163:                if (root instanceof  JWindow)
164:                    return ((JWindow) root).getGlassPane();
165:                if (root instanceof  JDialog)
166:                    return ((JDialog) root).getGlassPane();
167:                return null;
168:            }
169:
170:            /**
171:             * Returns the <code>layeredPane</code> object for the wrapped component.
172:             * @return the <code>layeredPane</code> property
173:             */
174:            public JLayeredPane getLayeredPane() {
175:                if (root instanceof  JFrame)
176:                    return ((JFrame) root).getLayeredPane();
177:                if (root instanceof  JApplet)
178:                    return ((JApplet) root).getLayeredPane();
179:                if (root instanceof  JWindow)
180:                    return ((JWindow) root).getLayeredPane();
181:                if (root instanceof  JDialog)
182:                    return ((JDialog) root).getLayeredPane();
183:                return null;
184:            }
185:
186:            /**
187:             * Gets the location of the wrapped component in the form of a point
188:             * specifying the component's top-left corner in the screen's
189:             * coordinate space.
190:             * @return An instance of <code>Point</code> representing
191:             * the top-left corner of the component's bounds in the
192:             * coordinate space of the screen.
193:             */
194:            public Point getLocationOnScreen() {
195:                if (root instanceof  JFrame)
196:                    return ((JFrame) root).getLocationOnScreen();
197:                else if (root instanceof  JApplet)
198:                    return ((JApplet) root).getLocationOnScreen();
199:                else if (root instanceof  JWindow)
200:                    return ((JWindow) root).getLocationOnScreen();
201:                else if (root instanceof  JDialog)
202:                    return ((JDialog) root).getLocationOnScreen();
203:                return null;
204:            }
205:
206:            /**
207:             * Returns the layer associated with <code>Component</code> maximization within the 
208:             * <code>RootSwingContainer</code>.
209:             * 
210:             * @return an <code>Integer</code> indicating the maximization layer property
211:             */
212:            public Integer getMaximizationLayer() {
213:                return maximizationLayer;
214:            }
215:
216:            /**
217:             * Returns the <code>LayoutManager</code> associated with <code>Component</code> maximization within the 
218:             * <code>RootSwingContainer</code>.
219:             * 
220:             * @return a <code>LayoutManager</code> indicating the maximization layout property
221:             */
222:            public LayoutManager getMaximizedLayout() {
223:                return maxedLayout;
224:            }
225:
226:            /**
227:             * Returns the the wrapped component.  (<code>JFrame</code>, <code>JApplet</code>, etc...)
228:             * @return the wrapped root container 
229:             */
230:            public Component getRootContainer() {
231:                return root;
232:            }
233:
234:            /**
235:             * Returns the <code>rootPane</code> object for the wrapped component.
236:             * @return the <code>rootPane</code> property
237:             */
238:            public JRootPane getRootPane() {
239:                if (root instanceof  JFrame)
240:                    return ((JFrame) root).getRootPane();
241:                else if (root instanceof  JApplet)
242:                    return ((JApplet) root).getRootPane();
243:                else if (root instanceof  JWindow)
244:                    return ((JWindow) root).getRootPane();
245:                else if (root instanceof  JDialog)
246:                    return ((JDialog) root).getRootPane();
247:                return null;
248:            }
249:
250:            /**
251:             * Convenience method that calls <code>revalidate()</code> on the current content pane 
252:             * if it is a <code>JComponent</code>. If not, no action is taken.
253:             */
254:            public void revalidateContentPane() {
255:                Container c = getContentPane();
256:                if (c instanceof  JComponent)
257:                    ((JComponent) c).revalidate();
258:            }
259:
260:            /**
261:             * Sets the <code>contentPane</code> property for the wrapped component. 
262:             *
263:             * @param contentPane the <code>contentPane</code> object for the wrapped component
264:             */
265:            public void setContentPane(Container contentPane) {
266:                if (root instanceof  JFrame)
267:                    ((JFrame) root).setContentPane(contentPane);
268:                else if (root instanceof  JApplet)
269:                    ((JApplet) root).setContentPane(contentPane);
270:                else if (root instanceof  JWindow)
271:                    ((JWindow) root).setContentPane(contentPane);
272:                else if (root instanceof  JDialog)
273:                    ((JDialog) root).setContentPane(contentPane);
274:            }
275:
276:            /**
277:             * Sets the <code>glassPane</code> property for the wrapped component. 
278:             *
279:             * @param glassPane the <code>glassPane</code> object for the wrapped component
280:             */
281:            public void setGlassPane(Component glassPane) {
282:                if (root instanceof  JFrame)
283:                    ((JFrame) root).setGlassPane(glassPane);
284:                else if (root instanceof  JApplet)
285:                    ((JApplet) root).setGlassPane(glassPane);
286:                else if (root instanceof  JWindow)
287:                    ((JWindow) root).setGlassPane(glassPane);
288:                else if (root instanceof  JDialog)
289:                    ((JDialog) root).setGlassPane(glassPane);
290:            }
291:
292:            /**
293:             * Sets the <code>layeredPane</code> property for the wrapped component. 
294:             *
295:             * @param layeredPane the <code>layeredPane</code> object for the wrapped component
296:             */
297:            public void setLayeredPane(JLayeredPane layeredPane) {
298:                if (root instanceof  JFrame)
299:                    ((JFrame) root).setLayeredPane(layeredPane);
300:                else if (root instanceof  JApplet)
301:                    ((JApplet) root).setLayeredPane(layeredPane);
302:                else if (root instanceof  JWindow)
303:                    ((JWindow) root).setLayeredPane(layeredPane);
304:                else if (root instanceof  JDialog)
305:                    ((JDialog) root).setLayeredPane(layeredPane);
306:            }
307:
308:            public Window[] getOwnedWindows() {
309:                if (root instanceof  JFrame)
310:                    return ((JFrame) root).getOwnedWindows();
311:                else if (root instanceof  JWindow)
312:                    return ((JWindow) root).getOwnedWindows();
313:                else if (root instanceof  JDialog)
314:                    return ((JDialog) root).getOwnedWindows();
315:                else
316:                    return new Window[0];
317:
318:            }
319:
320:            /**
321:             * Sets the layer associated with <code>Component</code> maximization within the 
322:             * <code>RootSwingContainer</code>.  If <code>layer</code> is <code>null</code>, 
323:             * DEFAULT_MAXED_LAYER is used instead.
324:             * 
325:             * @param layer an <code>Integer</code> indicating the maximization layer property
326:             */
327:            public void setMaximizationLayer(Integer layer) {
328:                if (layer == null)
329:                    layer = DEFAULT_MAXED_LAYER;
330:                maximizationLayer = layer;
331:            }
332:
333:            /**
334:             * Sets the <code>LayoutManager</code> associated with <code>Component</code> maximization within the 
335:             * <code>RootSwingContainer</code>.
336:             * 
337:             * @param mgr the <code>LayoutManager</code> associated with <code>Component</code> maximization 
338:             * within the <code>RootSwingContainer</code>.
339:             */
340:            public void setMaximizedLayout(LayoutManager mgr) {
341:                maxedLayout = mgr;
342:            }
343:
344:            /**
345:             * Sets the wrapped root container.
346:             *
347:             * @param root the new wrapped root container
348:             */
349:            protected void setRootContainer(Component root) {
350:                this .root = root;
351:            }
352:
353:            public void updateComponentTreeUI() {
354:                SwingUtilities.updateComponentTreeUI(root);
355:                pack();
356:            }
357:
358:            public void pack() {
359:                if (root instanceof  JFrame)
360:                    ((JFrame) root).pack();
361:                else if (root instanceof  JWindow)
362:                    ((JWindow) root).pack();
363:                else if (root instanceof  JDialog)
364:                    ((JDialog) root).pack();
365:            }
366:
367:            public void toFront() {
368:                if (root instanceof  JFrame)
369:                    ((JFrame) root).toFront();
370:                else if (root instanceof  JWindow)
371:                    ((JWindow) root).toFront();
372:                else if (root instanceof  JDialog)
373:                    ((JDialog) root).toFront();
374:            }
375:
376:            public boolean isActive() {
377:                if (root instanceof  JFrame)
378:                    return ((JFrame) root).isActive();
379:                else if (root instanceof  JWindow)
380:                    return ((JWindow) root).isActive();
381:                else if (root instanceof  JDialog)
382:                    return ((JDialog) root).isActive();
383:                return false;
384:            }
385:
386:            public Window getOwner() {
387:                if (root instanceof  JFrame)
388:                    return ((JFrame) root).getOwner();
389:                else if (root instanceof  JWindow)
390:                    return ((JWindow) root).getOwner();
391:                else if (root instanceof  JDialog)
392:                    return ((JDialog) root).getOwner();
393:                return null;
394:            }
395:
396:            public Rectangle getBounds() {
397:                if (root instanceof  JFrame)
398:                    return ((JFrame) root).getBounds();
399:                if (root instanceof  JApplet)
400:                    return ((JApplet) root).getBounds();
401:                else if (root instanceof  JWindow)
402:                    return ((JWindow) root).getBounds();
403:                else if (root instanceof  JDialog)
404:                    return ((JDialog) root).getBounds();
405:                return null;
406:            }
407:        }
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