001 /* MultiListUI.java --
002 Copyright (C) 2005 Free Software Foundation, Inc.
003
004 This file is part of GNU Classpath.
005
006 GNU Classpath is free software; you can redistribute it and/or modify
007 it under the terms of the GNU General Public License as published by
008 the Free Software Foundation; either version 2, or (at your option)
009 any later version.
010
011 GNU Classpath is distributed in the hope that it will be useful, but
012 WITHOUT ANY WARRANTY; without even the implied warranty of
013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014 General Public License for more details.
015
016 You should have received a copy of the GNU General Public License
017 along with GNU Classpath; see the file COPYING. If not, write to the
018 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019 02110-1301 USA.
020
021 Linking this library statically or dynamically with other modules is
022 making a combined work based on this library. Thus, the terms and
023 conditions of the GNU General Public License cover the whole
024 combination.
025
026 As a special exception, the copyright holders of this library give you
027 permission to link this library with independent modules to produce an
028 executable, regardless of the license terms of these independent
029 modules, and to copy and distribute the resulting executable under
030 terms of your choice, provided that you also meet, for each linked
031 independent module, the terms and conditions of the license of that
032 module. An independent module is a module which is not derived from
033 or based on this library. If you modify this library, you may extend
034 this exception to your version of the library, but you are not
035 obligated to do so. If you do not wish to do so, delete this
036 exception statement from your version. */
037
038 package javax.swing.plaf.multi;
039
040 import java.awt.Dimension;
041 import java.awt.Graphics;
042 import java.awt.Point;
043 import java.awt.Rectangle;
044 import java.util.Iterator;
045 import java.util.Vector;
046
047 import javax.accessibility.Accessible;
048 import javax.swing.JComponent;
049 import javax.swing.JList;
050 import javax.swing.LookAndFeel;
051 import javax.swing.UIManager;
052 import javax.swing.plaf.ComponentUI;
053 import javax.swing.plaf.ListUI;
054
055 /**
056 * A UI delegate that that coordinates multiple {@link ListUI}
057 * instances, one from the primary look and feel, and one or more from the
058 * auxiliary look and feel(s).
059 *
060 * @see UIManager#addAuxiliaryLookAndFeel(LookAndFeel)
061 */
062 public class MultiListUI extends ListUI
063 {
064
065 /** A list of references to the actual component UIs. */
066 protected Vector uis;
067
068 /**
069 * Creates a new <code>MultiListUI</code> instance.
070 *
071 * @see #createUI(JComponent)
072 */
073 public MultiListUI()
074 {
075 uis = new Vector();
076 }
077
078 /**
079 * Creates a delegate object for the specified component. If any auxiliary
080 * look and feels support this component, a <code>MultiListUI</code> is
081 * returned, otherwise the UI from the default look and feel is returned.
082 *
083 * @param target the component.
084 *
085 * @see MultiLookAndFeel#createUIs(ComponentUI, Vector, JComponent)
086 */
087 public static ComponentUI createUI(JComponent target)
088 {
089 MultiListUI mui = new MultiListUI();
090 return MultiLookAndFeel.createUIs(mui, mui.uis, target);
091 }
092
093 /**
094 * Calls the {@link ComponentUI#installUI(JComponent)} method for all
095 * the UI delegates managed by this <code>MultiListUI</code>.
096 *
097 * @param c the component.
098 */
099 public void installUI(JComponent c)
100 {
101 Iterator iterator = uis.iterator();
102 while (iterator.hasNext())
103 {
104 ComponentUI ui = (ComponentUI) iterator.next();
105 ui.installUI(c);
106 }
107 }
108
109 /**
110 * Calls the {@link ComponentUI#uninstallUI(JComponent)} method for all
111 * the UI delegates managed by this <code>MultiListUI</code>.
112 *
113 * @param c the component.
114 */
115 public void uninstallUI(JComponent c)
116 {
117 Iterator iterator = uis.iterator();
118 while (iterator.hasNext())
119 {
120 ComponentUI ui = (ComponentUI) iterator.next();
121 ui.uninstallUI(c);
122 }
123 }
124
125 /**
126 * Returns an array containing the UI delegates managed by this
127 * <code>MultiListUI</code>. The first item in the array is always
128 * the UI delegate from the installed default look and feel.
129 *
130 * @return An array of UI delegates.
131 */
132 public ComponentUI[] getUIs()
133 {
134 return MultiLookAndFeel.uisToArray(uis);
135 }
136
137 /**
138 * Calls the {@link ComponentUI#contains(JComponent, int, int)} method for all
139 * the UI delegates managed by this <code>MultiListUI</code>,
140 * returning the result for the UI delegate from the primary look and
141 * feel.
142 *
143 * @param c the component.
144 * @param x the x-coordinate.
145 * @param y the y-coordinate.
146 *
147 * @return <code>true</code> if the specified (x, y) coordinate falls within
148 * the bounds of the component as rendered by the UI delegate in the
149 * primary look and feel, and <code>false</code> otherwise.
150 */
151 public boolean contains(JComponent c, int x, int y)
152 {
153 boolean result = false;
154 Iterator iterator = uis.iterator();
155 // first UI delegate provides the return value
156 if (iterator.hasNext())
157 {
158 ComponentUI ui = (ComponentUI) iterator.next();
159 result = ui.contains(c, x, y);
160 }
161 // return values from auxiliary UI delegates are ignored
162 while (iterator.hasNext())
163 {
164 ComponentUI ui = (ComponentUI) iterator.next();
165 /* boolean ignored = */ ui.contains(c, x, y);
166 }
167 return result;
168 }
169
170 /**
171 * Calls the {@link ComponentUI#update(Graphics, JComponent)} method for all
172 * the UI delegates managed by this <code>MultiListUI</code>.
173 *
174 * @param g the graphics device.
175 * @param c the component.
176 */
177 public void update(Graphics g, JComponent c)
178 {
179 Iterator iterator = uis.iterator();
180 while (iterator.hasNext())
181 {
182 ComponentUI ui = (ComponentUI) iterator.next();
183 ui.update(g, c);
184 }
185 }
186
187 /**
188 * Calls the <code>paint(Graphics, JComponent)</code> method for all the UI
189 * delegates managed by this <code>MultiListUI</code>.
190 *
191 * @param g the graphics device.
192 * @param c the component.
193 */
194 public void paint(Graphics g, JComponent c)
195 {
196 Iterator iterator = uis.iterator();
197 while (iterator.hasNext())
198 {
199 ComponentUI ui = (ComponentUI) iterator.next();
200 ui.paint(g, c);
201 }
202 }
203
204 /**
205 * Calls the {@link ComponentUI#getPreferredSize(JComponent)} method for all
206 * the UI delegates managed by this <code>MultiListUI</code>,
207 * returning the preferred size for the UI delegate from the primary look and
208 * feel.
209 *
210 * @param c the component.
211 *
212 * @return The preferred size returned by the UI delegate from the primary
213 * look and feel.
214 */
215 public Dimension getPreferredSize(JComponent c)
216 {
217 Dimension result = null;
218 Iterator iterator = uis.iterator();
219 // first UI delegate provides the return value
220 if (iterator.hasNext())
221 {
222 ComponentUI ui = (ComponentUI) iterator.next();
223 result = ui.getPreferredSize(c);
224 }
225 // return values from auxiliary UI delegates are ignored
226 while (iterator.hasNext())
227 {
228 ComponentUI ui = (ComponentUI) iterator.next();
229 /* Dimension ignored = */ ui.getPreferredSize(c);
230 }
231 return result;
232 }
233
234 /**
235 * Calls the {@link ComponentUI#getMinimumSize(JComponent)} method for all
236 * the UI delegates managed by this <code>MultiListUI</code>,
237 * returning the minimum size for the UI delegate from the primary look and
238 * feel.
239 *
240 * @param c the component.
241 *
242 * @return The minimum size returned by the UI delegate from the primary
243 * look and feel.
244 */
245 public Dimension getMinimumSize(JComponent c)
246 {
247 Dimension result = null;
248 Iterator iterator = uis.iterator();
249 // first UI delegate provides the return value
250 if (iterator.hasNext())
251 {
252 ComponentUI ui = (ComponentUI) iterator.next();
253 result = ui.getMinimumSize(c);
254 }
255 // return values from auxiliary UI delegates are ignored
256 while (iterator.hasNext())
257 {
258 ComponentUI ui = (ComponentUI) iterator.next();
259 /* Dimension ignored = */ ui.getMinimumSize(c);
260 }
261 return result;
262 }
263
264 /**
265 * Calls the {@link ComponentUI#getMaximumSize(JComponent)} method for all
266 * the UI delegates managed by this <code>MultiListUI</code>,
267 * returning the maximum size for the UI delegate from the primary look and
268 * feel.
269 *
270 * @param c the component.
271 *
272 * @return The maximum size returned by the UI delegate from the primary
273 * look and feel.
274 */
275 public Dimension getMaximumSize(JComponent c)
276 {
277 Dimension result = null;
278 Iterator iterator = uis.iterator();
279 // first UI delegate provides the return value
280 if (iterator.hasNext())
281 {
282 ComponentUI ui = (ComponentUI) iterator.next();
283 result = ui.getMaximumSize(c);
284 }
285 // return values from auxiliary UI delegates are ignored
286 while (iterator.hasNext())
287 {
288 ComponentUI ui = (ComponentUI) iterator.next();
289 /* Dimension ignored = */ ui.getMaximumSize(c);
290 }
291 return result;
292 }
293
294 /**
295 * Calls the {@link ComponentUI#getAccessibleChildrenCount(JComponent)} method
296 * for all the UI delegates managed by this <code>MultiListUI</code>,
297 * returning the count for the UI delegate from the primary look and
298 * feel.
299 *
300 * @param c the component.
301 *
302 * @return The count returned by the UI delegate from the primary
303 * look and feel.
304 */
305 public int getAccessibleChildrenCount(JComponent c)
306 {
307 int result = 0;
308 Iterator iterator = uis.iterator();
309 // first UI delegate provides the return value
310 if (iterator.hasNext())
311 {
312 ComponentUI ui = (ComponentUI) iterator.next();
313 result = ui.getAccessibleChildrenCount(c);
314 }
315 // return values from auxiliary UI delegates are ignored
316 while (iterator.hasNext())
317 {
318 ComponentUI ui = (ComponentUI) iterator.next();
319 /* int ignored = */ ui.getAccessibleChildrenCount(c);
320 }
321 return result;
322 }
323
324 /**
325 * Calls the {@link ComponentUI#getAccessibleChild(JComponent, int)} method
326 * for all the UI delegates managed by this <code>MultiListUI</code>,
327 * returning the child for the UI delegate from the primary look and
328 * feel.
329 *
330 * @param c the component
331 * @param i the child index.
332 *
333 * @return The child returned by the UI delegate from the primary
334 * look and feel.
335 */
336 public Accessible getAccessibleChild(JComponent c, int i)
337 {
338 Accessible result = null;
339 Iterator iterator = uis.iterator();
340 // first UI delegate provides the return value
341 if (iterator.hasNext())
342 {
343 ComponentUI ui = (ComponentUI) iterator.next();
344 result = ui.getAccessibleChild(c, i);
345 }
346 // return values from auxiliary UI delegates are ignored
347 while (iterator.hasNext())
348 {
349 ComponentUI ui = (ComponentUI) iterator.next();
350 /* Accessible ignored = */ ui.getAccessibleChild(c, i);
351 }
352 return result;
353 }
354
355 /**
356 * Calls the {@link ListUI#locationToIndex(JList, Point)} method for all
357 * the UI delegates managed by this <code>MultiListUI</code>,
358 * returning the index for the UI delegate from the primary look and
359 * feel.
360 *
361 * @param list the list.
362 * @param location the location.
363 *
364 * @return The index returned by the UI delegate from the primary
365 * look and feel.
366 */
367 public int locationToIndex(JList list, Point location)
368 {
369 int result = 0;
370 Iterator iterator = uis.iterator();
371 // first UI delegate provides the return value
372 if (iterator.hasNext())
373 {
374 ListUI ui = (ListUI) iterator.next();
375 result = ui.locationToIndex(list, location);
376 }
377 // return values from auxiliary UI delegates are ignored
378 while (iterator.hasNext())
379 {
380 ListUI ui = (ListUI) iterator.next();
381 /* int ignored = */ ui.locationToIndex(list, location);
382 }
383 return result;
384 }
385
386 /**
387 * Calls the {@link ListUI#indexToLocation(JList, int)} method for all
388 * the UI delegates managed by this <code>MultiListUI</code>,
389 * returning the location for the UI delegate from the primary look and
390 * feel.
391 *
392 * @param list the list.
393 * @param index the index.
394 *
395 * @return The location returned by the UI delegate from the primary
396 * look and feel.
397 */
398 public Point indexToLocation(JList list, int index)
399 {
400 Point result = null;
401 Iterator iterator = uis.iterator();
402 // first UI delegate provides the return value
403 if (iterator.hasNext())
404 {
405 ListUI ui = (ListUI) iterator.next();
406 result = ui.indexToLocation(list, index);
407 }
408 // return values from auxiliary UI delegates are ignored
409 while (iterator.hasNext())
410 {
411 ListUI ui = (ListUI) iterator.next();
412 /* Point ignored = */ ui.indexToLocation(list, index);
413 }
414 return result;
415 }
416
417 /**
418 * Calls the {@link ListUI#getCellBounds(JList, int, int)} method for all
419 * the UI delegates managed by this <code>MultiListUI</code>,
420 * returning the bounds for the UI delegate from the primary look and
421 * feel.
422 *
423 * @param list the list.
424 * @param index1 the first index.
425 * @param index2 the second index.
426 *
427 * @return The bounds returned by the UI delegate from the primary
428 * look and feel.
429 */
430 public Rectangle getCellBounds(JList list, int index1, int index2)
431 {
432 Rectangle result = null;
433 Iterator iterator = uis.iterator();
434 // first UI delegate provides the return value
435 if (iterator.hasNext())
436 {
437 ListUI ui = (ListUI) iterator.next();
438 result = ui.getCellBounds(list, index1, index2);
439 }
440 // return values from auxiliary UI delegates are ignored
441 while (iterator.hasNext())
442 {
443 ListUI ui = (ListUI) iterator.next();
444 /* Rectangle ignored = */ ui.getCellBounds(list, index1, index2);
445 }
446 return result;
447 }
448
449 }