211 * @param bounds the region being queried
212 * @return the preferred width for the passed in region
213 */
214 public int getPreferredWidth(Rectangle bounds) {
215 int rowCount = getRowCount();
216
217 if(rowCount > 0) {
218 // Get the width
219 TreePath firstPath;
220 int endY;
221
222 if(bounds == null) {
223 firstPath = getPathForRow(0);
224 endY = Integer.MAX_VALUE;
225 }
226 else {
227 firstPath = getPathClosestTo(bounds.x, bounds.y);
228 endY = bounds.height + bounds.y;
229 }
230
231 Enumeration paths = getVisiblePathsFrom(firstPath);
232
233 if(paths != null && paths.hasMoreElements()) {
234 Rectangle pBounds = getBounds((TreePath)paths.nextElement(),
235 null);
236 int width;
237
238 if(pBounds != null) {
239 width = pBounds.x + pBounds.width;
240 if (pBounds.y >= endY) {
241 return width;
242 }
243 }
244 else
245 width = 0;
246 while (pBounds != null && paths.hasMoreElements()) {
247 pBounds = getBounds((TreePath)paths.nextElement(),
248 pBounds);
249 if (pBounds != null && pBounds.y < endY) {
250 width = Math.max(width, pBounds.x + pBounds.width);
251 }
252 else {
253 pBounds = null;
254 }
255 }
256 return width;
257 }
258 }
259 return 0;
260 }
261
262 //
263 // Abstract methods that must be implemented to be concrete.
264 //
265
266 /**
267 * Returns true if the value identified by row is currently expanded.
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211 * @param bounds the region being queried
212 * @return the preferred width for the passed in region
213 */
214 public int getPreferredWidth(Rectangle bounds) {
215 int rowCount = getRowCount();
216
217 if(rowCount > 0) {
218 // Get the width
219 TreePath firstPath;
220 int endY;
221
222 if(bounds == null) {
223 firstPath = getPathForRow(0);
224 endY = Integer.MAX_VALUE;
225 }
226 else {
227 firstPath = getPathClosestTo(bounds.x, bounds.y);
228 endY = bounds.height + bounds.y;
229 }
230
231 Enumeration<TreePath> paths = getVisiblePathsFrom(firstPath);
232
233 if(paths != null && paths.hasMoreElements()) {
234 Rectangle pBounds = getBounds(paths.nextElement(),
235 null);
236 int width;
237
238 if(pBounds != null) {
239 width = pBounds.x + pBounds.width;
240 if (pBounds.y >= endY) {
241 return width;
242 }
243 }
244 else
245 width = 0;
246 while (pBounds != null && paths.hasMoreElements()) {
247 pBounds = getBounds(paths.nextElement(),
248 pBounds);
249 if (pBounds != null && pBounds.y < endY) {
250 width = Math.max(width, pBounds.x + pBounds.width);
251 }
252 else {
253 pBounds = null;
254 }
255 }
256 return width;
257 }
258 }
259 return 0;
260 }
261
262 //
263 // Abstract methods that must be implemented to be concrete.
264 //
265
266 /**
267 * Returns true if the value identified by row is currently expanded.
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