Source Code Cross Referenced for FindReplaceAction.java in  » IDE-Eclipse » ui-workbench » org » eclipse » ui » texteditor » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE Eclipse » ui workbench » org.eclipse.ui.texteditor 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*******************************************************************************
002:         * Copyright (c) 2000, 2007 IBM Corporation and others.
003:         * All rights reserved. This program and the accompanying materials
004:         * are made available under the terms of the Eclipse Public License v1.0
005:         * which accompanies this distribution, and is available at
006:         * http://www.eclipse.org/legal/epl-v10.html
007:         *
008:         * Contributors:
009:         *     IBM Corporation - initial API and implementation
010:         *     Max Weninger <max.weninger@windriver.com> - https://bugs.eclipse.org/bugs/show_bug.cgi?id=148898 
011:         *******************************************************************************/package org.eclipse.ui.texteditor;
012:
013:        import java.util.ResourceBundle;
014:
015:        import org.eclipse.swt.events.DisposeEvent;
016:        import org.eclipse.swt.events.DisposeListener;
017:        import org.eclipse.swt.widgets.Shell;
018:
019:        import org.eclipse.core.runtime.Assert;
020:
021:        import org.eclipse.jface.text.IFindReplaceTarget;
022:
023:        import org.eclipse.ui.IPartListener;
024:        import org.eclipse.ui.IPartService;
025:        import org.eclipse.ui.IWorkbenchPart;
026:        import org.eclipse.ui.IWorkbenchPartSite;
027:        import org.eclipse.ui.IWorkbenchWindow;
028:
029:        /**
030:         * An action which opens a Find/Replace dialog.
031:         * The dialog while open, tracks the active workbench part
032:         * and retargets itself to the active find/replace target.
033:         * <p>
034:         * It can also be used without having an IWorkbenchPart e.g. for
035:         * dialogs or wizards by just providing a {@link Shell} and an {@link IFindReplaceTarget}.
036:         * <em>In this case the dialog won't be shared with the one
037:         * used for the active workbench part.</em> 
038:         * </p>
039:         * <p>
040:         * This class may be instantiated; it is not intended to be subclassed.
041:         * </p>
042:         *
043:         * @see IFindReplaceTarget
044:         */
045:        public class FindReplaceAction extends ResourceAction implements 
046:                IUpdate {
047:
048:            /**
049:             * Represents the "global" find/replace dialog. It tracks the active
050:             * part and retargets the find/replace dialog accordingly. The find/replace
051:             * target is retrieved from the active part using
052:             * <code>getAdapter(IFindReplaceTarget.class)</code>.
053:             * <p>
054:             * The stub has the same life cycle as the find/replace dialog.</p>
055:             * <p>
056:             * If no IWorkbenchPart is available a Shell must be provided
057:             * In this case the IFindReplaceTarget will never change.</p>
058:             */
059:            static class FindReplaceDialogStub implements  IPartListener,
060:                    DisposeListener {
061:
062:                /** The workbench part */
063:                private IWorkbenchPart fPart;
064:                /** The previous workbench part */
065:                private IWorkbenchPart fPreviousPart;
066:                /** The previous find/replace target */
067:                private IFindReplaceTarget fPreviousTarget;
068:
069:                /** The workbench window */
070:                private IWorkbenchWindow fWindow;
071:                /** The find/replace dialog */
072:                private FindReplaceDialog fDialog;
073:
074:                /**
075:                 * Creates a new find/replace dialog accessor anchored at the given part site.
076:                 * 
077:                 * @param site the part site
078:                 */
079:                public FindReplaceDialogStub(IWorkbenchPartSite site) {
080:                    this (site.getShell());
081:                    fWindow = site.getWorkbenchWindow();
082:                    IPartService service = fWindow.getPartService();
083:                    service.addPartListener(this );
084:                    partActivated(service.getActivePart());
085:                }
086:
087:                /**
088:                 * Creates a new find/replace dialog accessor anchored at the given shell.
089:                 * 
090:                 * @param shell the shell if no site is used
091:                 * @since 3.3
092:                 */
093:                public FindReplaceDialogStub(Shell shell) {
094:                    fDialog = new FindReplaceDialog(shell);
095:                    fDialog.create();
096:                    fDialog.getShell().addDisposeListener(this );
097:                }
098:
099:                /**
100:                 * Returns the find/replace dialog.
101:                 * @return the find/replace dialog
102:                 */
103:                public FindReplaceDialog getDialog() {
104:                    return fDialog;
105:                }
106:
107:                /*
108:                 * @see IPartListener#partActivated(IWorkbenchPart)
109:                 */
110:                public void partActivated(IWorkbenchPart part) {
111:
112:                    IFindReplaceTarget target = part == null ? null
113:                            : (IFindReplaceTarget) part
114:                                    .getAdapter(IFindReplaceTarget.class);
115:                    fPreviousPart = fPart;
116:                    fPart = target == null ? null : part;
117:
118:                    if (fPreviousTarget != target) {
119:                        fPreviousTarget = target;
120:                        if (fDialog != null) {
121:                            boolean isEditable = false;
122:                            if (fPart instanceof  ITextEditorExtension2) {
123:                                ITextEditorExtension2 extension = (ITextEditorExtension2) fPart;
124:                                isEditable = extension
125:                                        .isEditorInputModifiable();
126:                            } else if (target != null)
127:                                isEditable = target.isEditable();
128:                            fDialog.updateTarget(target, isEditable, false);
129:                        }
130:                    }
131:                }
132:
133:                /*
134:                 * @see IPartListener#partClosed(IWorkbenchPart)
135:                 */
136:                public void partClosed(IWorkbenchPart part) {
137:
138:                    if (part == fPreviousPart) {
139:                        fPreviousPart = null;
140:                        fPreviousTarget = null;
141:                    }
142:
143:                    if (part == fPart)
144:                        partActivated(null);
145:                }
146:
147:                /*
148:                 * @see DisposeListener#widgetDisposed(DisposeEvent)
149:                 */
150:                public void widgetDisposed(DisposeEvent event) {
151:
152:                    if (fgFindReplaceDialogStub == this )
153:                        fgFindReplaceDialogStub = null;
154:
155:                    if (fgFindReplaceDialogStubShell == this )
156:                        fgFindReplaceDialogStubShell = null;
157:
158:                    if (fWindow != null) {
159:                        fWindow.getPartService().removePartListener(this );
160:                        fWindow = null;
161:                    }
162:                    fDialog = null;
163:                    fPart = null;
164:                    fPreviousPart = null;
165:                    fPreviousTarget = null;
166:                }
167:
168:                /*
169:                 * @see IPartListener#partOpened(IWorkbenchPart)
170:                 */
171:                public void partOpened(IWorkbenchPart part) {
172:                }
173:
174:                /*
175:                 * @see IPartListener#partDeactivated(IWorkbenchPart)
176:                 */
177:                public void partDeactivated(IWorkbenchPart part) {
178:                }
179:
180:                /*
181:                 * @see IPartListener#partBroughtToTop(IWorkbenchPart)
182:                 */
183:                public void partBroughtToTop(IWorkbenchPart part) {
184:                }
185:
186:                /**
187:                 * Checks if the dialogs shell is the same as the
188:                 * given <code>shell</code> and if not clears the stub
189:                 * and closes the dialog.
190:                 *
191:                 * @param shell the shell check
192:                 * @since 3.3
193:                 */
194:                public void checkShell(Shell shell) {
195:                    if (fDialog != null && shell != fDialog.getParentShell()) {
196:                        if (fgFindReplaceDialogStub == this )
197:                            fgFindReplaceDialogStub = null;
198:
199:                        if (fgFindReplaceDialogStubShell == this )
200:                            fgFindReplaceDialogStubShell = null;
201:
202:                        fDialog.close();
203:                    }
204:                }
205:            }
206:
207:            /**
208:             * Listener for disabling the dialog on shell close.
209:             * <p>
210:             * This stub is shared amongst <code>IWorkbenchPart</code>s.</p>
211:             */
212:            private static FindReplaceDialogStub fgFindReplaceDialogStub;
213:
214:            /** Listener for disabling the dialog on shell close.
215:             * <p>
216:             * This stub is shared amongst <code>Shell</code>s.</p>
217:             * @since 3.3
218:             */
219:            private static FindReplaceDialogStub fgFindReplaceDialogStubShell;
220:
221:            /** The action's target */
222:            private IFindReplaceTarget fTarget;
223:            /** The part to use if the action is created with a part. */
224:            private IWorkbenchPart fWorkbenchPart;
225:            /** The workbench window */
226:            private IWorkbenchWindow fWorkbenchWindow;
227:            /**
228:             * The shell to use if the action is created with a shell.
229:             * @since 3.3
230:             */
231:            private Shell fShell;
232:
233:            /**
234:             * Creates a new find/replace action for the given workbench part.
235:             * <p>
236:             * The action configures its visual representation from the given
237:             * resource bundle.</p>
238:             *
239:             * @param bundle the resource bundle
240:             * @param prefix a prefix to be prepended to the various resource keys
241:             *   (described in <code>ResourceAction</code> constructor), or
242:             *   <code>null</code> if none
243:             * @param workbenchPart	 the workbench part
244:             * @see ResourceAction#ResourceAction(ResourceBundle, String)
245:             */
246:            public FindReplaceAction(ResourceBundle bundle, String prefix,
247:                    IWorkbenchPart workbenchPart) {
248:                super (bundle, prefix);
249:                Assert.isLegal(workbenchPart != null);
250:                fWorkbenchPart = workbenchPart;
251:                update();
252:            }
253:
254:            /**
255:             * Creates a new find/replace action for the given target and shell.
256:             * <p>
257:             * This can be used without having an IWorkbenchPart e.g. for
258:             * dialogs or wizards.</p>
259:             * <p>
260:             * The action configures its visual representation from the given
261:             * resource bundle.</p>
262:             *
263:             * @param bundle the resource bundle
264:             * @param prefix a prefix to be prepended to the various resource keys
265:             *   (described in <code>ResourceAction</code> constructor), or
266:             *   <code>null</code> if none
267:             * @param target the IFindReplaceTarget to use
268:             * @param shell the shell
269:             * @see ResourceAction#ResourceAction(ResourceBundle, String)
270:             * 
271:             * @since 3.3
272:             */
273:            public FindReplaceAction(ResourceBundle bundle, String prefix,
274:                    Shell shell, IFindReplaceTarget target) {
275:                super (bundle, prefix);
276:                Assert.isLegal(target != null && shell != null);
277:                fTarget = target;
278:                fShell = shell;
279:                update();
280:            }
281:
282:            /**
283:             * Creates a new find/replace action for the given workbench window.
284:             * The action configures its visual representation from the given
285:             * resource bundle.
286:             *
287:             * @param bundle the resource bundle
288:             * @param prefix a prefix to be prepended to the various resource keys
289:             *   (described in <code>ResourceAction</code> constructor), or
290:             *   <code>null</code> if none
291:             * @param workbenchWindow the workbench window
292:             * @see ResourceAction#ResourceAction(ResourceBundle, String)
293:             *
294:             * @deprecated use FindReplaceAction(ResourceBundle, String, IWorkbenchPart) instead
295:             */
296:            public FindReplaceAction(ResourceBundle bundle, String prefix,
297:                    IWorkbenchWindow workbenchWindow) {
298:                super (bundle, prefix);
299:                fWorkbenchWindow = workbenchWindow;
300:                update();
301:            }
302:
303:            /*
304:             *	@see IAction#run()
305:             */
306:            public void run() {
307:                if (fTarget == null)
308:                    return;
309:
310:                final FindReplaceDialog dialog;
311:                final boolean isEditable;
312:
313:                if (fShell == null) {
314:                    if (fgFindReplaceDialogStub != null) {
315:                        Shell shell = fWorkbenchPart.getSite().getShell();
316:                        fgFindReplaceDialogStub.checkShell(shell);
317:                    }
318:                    if (fgFindReplaceDialogStub == null)
319:                        fgFindReplaceDialogStub = new FindReplaceDialogStub(
320:                                fWorkbenchPart.getSite());
321:
322:                    if (fWorkbenchPart instanceof  ITextEditorExtension2)
323:                        isEditable = ((ITextEditorExtension2) fWorkbenchPart)
324:                                .isEditorInputModifiable();
325:                    else
326:                        isEditable = fTarget.isEditable();
327:
328:                    dialog = fgFindReplaceDialogStub.getDialog();
329:
330:                } else {
331:                    if (fgFindReplaceDialogStubShell != null) {
332:                        fgFindReplaceDialogStubShell.checkShell(fShell);
333:                    }
334:                    if (fgFindReplaceDialogStubShell == null)
335:                        fgFindReplaceDialogStubShell = new FindReplaceDialogStub(
336:                                fShell);
337:
338:                    isEditable = fTarget.isEditable();
339:                    dialog = fgFindReplaceDialogStubShell.getDialog();
340:                }
341:
342:                dialog.updateTarget(fTarget, isEditable, true);
343:                dialog.open();
344:            }
345:
346:            /*
347:             * @see IUpdate#update()
348:             */
349:            public void update() {
350:
351:                if (fShell == null) {
352:                    if (fWorkbenchPart == null && fWorkbenchWindow != null)
353:                        fWorkbenchPart = fWorkbenchWindow.getPartService()
354:                                .getActivePart();
355:
356:                    if (fWorkbenchPart != null)
357:                        fTarget = (IFindReplaceTarget) fWorkbenchPart
358:                                .getAdapter(IFindReplaceTarget.class);
359:                    else
360:                        fTarget = null;
361:                }
362:                setEnabled(fTarget != null && fTarget.canPerformFind());
363:            }
364:        }
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