Source Code Cross Referenced for BaseExtensionPointMainPage.java in  » IDE-Eclipse » Eclipse-plug-in-development » org » eclipse » pde » internal » ui » wizards » extension » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE Eclipse » Eclipse plug in development » org.eclipse.pde.internal.ui.wizards.extension 
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:         *******************************************************************************/package org.eclipse.pde.internal.ui.wizards.extension;
011:
012:        import java.io.ByteArrayInputStream;
013:        import java.io.IOException;
014:        import java.io.InputStream;
015:        import java.io.PrintWriter;
016:        import java.io.StringWriter;
017:        import java.io.UnsupportedEncodingException;
018:
019:        import org.eclipse.core.resources.IContainer;
020:        import org.eclipse.core.resources.IFile;
021:        import org.eclipse.core.resources.IFolder;
022:        import org.eclipse.core.resources.IResource;
023:        import org.eclipse.core.resources.IWorkspace;
024:        import org.eclipse.core.runtime.CoreException;
025:        import org.eclipse.core.runtime.IPath;
026:        import org.eclipse.core.runtime.IProgressMonitor;
027:        import org.eclipse.core.runtime.Path;
028:        import org.eclipse.jface.dialogs.Dialog;
029:        import org.eclipse.jface.operation.IRunnableWithProgress;
030:        import org.eclipse.jface.viewers.Viewer;
031:        import org.eclipse.jface.viewers.ViewerFilter;
032:        import org.eclipse.jface.window.Window;
033:        import org.eclipse.jface.wizard.WizardPage;
034:        import org.eclipse.osgi.util.NLS;
035:        import org.eclipse.pde.core.plugin.IPluginModelBase;
036:        import org.eclipse.pde.core.plugin.PluginRegistry;
037:        import org.eclipse.pde.internal.core.PDECore;
038:        import org.eclipse.pde.internal.core.ischema.IDocumentSection;
039:        import org.eclipse.pde.internal.core.ischema.ISchemaAttribute;
040:        import org.eclipse.pde.internal.core.schema.DocumentSection;
041:        import org.eclipse.pde.internal.core.schema.EditableSchema;
042:        import org.eclipse.pde.internal.core.schema.SchemaAttribute;
043:        import org.eclipse.pde.internal.core.schema.SchemaComplexType;
044:        import org.eclipse.pde.internal.core.schema.SchemaElement;
045:        import org.eclipse.pde.internal.core.schema.SchemaRootElement;
046:        import org.eclipse.pde.internal.core.schema.SchemaSimpleType;
047:        import org.eclipse.pde.internal.core.util.CoreUtility;
048:        import org.eclipse.pde.internal.core.util.IdUtil;
049:        import org.eclipse.pde.internal.ui.IHelpContextIds;
050:        import org.eclipse.pde.internal.ui.IPDEUIConstants;
051:        import org.eclipse.pde.internal.ui.PDEPlugin;
052:        import org.eclipse.pde.internal.ui.PDEUIMessages;
053:        import org.eclipse.pde.internal.ui.util.SWTUtil;
054:        import org.eclipse.pde.internal.ui.wizards.PluginSelectionDialog;
055:        import org.eclipse.swt.SWT;
056:        import org.eclipse.swt.events.ModifyEvent;
057:        import org.eclipse.swt.events.ModifyListener;
058:        import org.eclipse.swt.events.SelectionAdapter;
059:        import org.eclipse.swt.events.SelectionEvent;
060:        import org.eclipse.swt.layout.GridData;
061:        import org.eclipse.swt.layout.GridLayout;
062:        import org.eclipse.swt.widgets.Button;
063:        import org.eclipse.swt.widgets.Composite;
064:        import org.eclipse.swt.widgets.Display;
065:        import org.eclipse.swt.widgets.Label;
066:        import org.eclipse.swt.widgets.Text;
067:        import org.eclipse.ui.IWorkbenchWindow;
068:        import org.eclipse.ui.PartInitException;
069:        import org.eclipse.ui.PlatformUI;
070:        import org.eclipse.ui.actions.WorkspaceModifyOperation;
071:        import org.eclipse.ui.dialogs.ElementTreeSelectionDialog;
072:        import org.eclipse.ui.ide.IDE;
073:        import org.eclipse.ui.model.WorkbenchContentProvider;
074:        import org.eclipse.ui.model.WorkbenchLabelProvider;
075:        import org.eclipse.ui.part.FileEditorInput;
076:        import org.eclipse.ui.views.navigator.ResourceComparator;
077:
078:        public abstract class BaseExtensionPointMainPage extends WizardPage {
079:            public static final String SETTINGS_PLUGIN_ID = "BaseExtensionPoint.settings.pluginId"; //$NON-NLS-1$
080:            public static final String SCHEMA_DIR = "schema"; //$NON-NLS-1$
081:
082:            protected IContainer fContainer;
083:            protected Text fIdText;
084:            protected Text fPluginIdText;
085:            protected Text fNameText;
086:            protected Text fSchemaText;
087:            protected Text fSchemaLocationText;
088:            protected Button fOpenSchemaButton;
089:            protected Button fSharedSchemaButton;
090:            protected Button fPluginBrowseButton;
091:            protected Button fFindLocationButton;
092:
093:            public BaseExtensionPointMainPage(IContainer container) {
094:                super ("newExtensionPoint"); //$NON-NLS-1$
095:                fContainer = container;
096:            }
097:
098:            public void createControl(Composite parent) {
099:                Composite container = new Composite(parent, SWT.NONE);
100:                GridLayout layout = new GridLayout();
101:                layout.numColumns = 3;
102:                layout.verticalSpacing = 9;
103:                layout.makeColumnsEqualWidth = false;
104:                container.setLayout(layout);
105:                Label label;
106:                GridData gd;
107:                if (isPluginIdNeeded()) {
108:                    label = new Label(container, SWT.NONE);
109:                    label.setText(PDEUIMessages.BaseExtensionPoint_pluginId);
110:                    fPluginIdText = new Text(container, SWT.SINGLE | SWT.BORDER);
111:                    gd = new GridData(GridData.FILL_HORIZONTAL);
112:                    gd.horizontalSpan = 1;
113:                    gd.widthHint = 275;
114:                    fPluginIdText.setLayoutData(gd);
115:                    fPluginIdText.addModifyListener(new ModifyListener() {
116:                        public void modifyText(ModifyEvent e) {
117:                            validatePage();
118:                        }
119:                    });
120:                    fPluginBrowseButton = new Button(container, SWT.PUSH);
121:                    gd = new GridData(GridData.HORIZONTAL_ALIGN_END);
122:                    gd.horizontalSpan = 1;
123:                    gd.widthHint = 50;
124:                    fPluginBrowseButton.setLayoutData(gd);
125:                    fPluginBrowseButton
126:                            .setText(PDEUIMessages.BaseExtensionPointMainPage_pluginBrowse);
127:                    fPluginBrowseButton
128:                            .setToolTipText(PDEUIMessages.BaseExtensionPointMainPage_pluginId_tooltip);
129:                    fPluginBrowseButton
130:                            .addSelectionListener(new SelectionAdapter() {
131:                                public void widgetSelected(SelectionEvent e) {
132:                                    handlePluginBrowse();
133:                                }
134:                            });
135:                    SWTUtil.setButtonDimensionHint(fPluginBrowseButton);
136:                }
137:                label = new Label(container, SWT.NONE);
138:                label.setText(PDEUIMessages.BaseExtensionPoint_id);
139:                fIdText = new Text(container, SWT.SINGLE | SWT.BORDER);
140:                gd = new GridData(GridData.FILL_HORIZONTAL);
141:                gd.horizontalSpan = 2;
142:                fIdText.setLayoutData(gd);
143:                fIdText.addModifyListener(new ModifyListener() {
144:                    public void modifyText(ModifyEvent e) {
145:                        // setting the text will trigger validation
146:                        // do not implicitly validate here
147:                        fSchemaText
148:                                .setText(getSchemaLocation()
149:                                        + (getSchemaLocation().length() > 0 ? "/" : "") + fIdText.getText() + ".exsd"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
150:                    }
151:                });
152:                label = new Label(container, SWT.NONE);
153:                label.setText(PDEUIMessages.BaseExtensionPoint_name);
154:                fNameText = new Text(container, SWT.SINGLE | SWT.BORDER);
155:                gd = new GridData(GridData.FILL_HORIZONTAL);
156:                gd.horizontalSpan = 2;
157:                fNameText.setLayoutData(gd);
158:                fNameText.addModifyListener(new ModifyListener() {
159:                    public void modifyText(ModifyEvent e) {
160:                        validatePage();
161:                    }
162:                });
163:                if (isPluginIdNeeded() && !isPluginIdFinal()) {
164:                    label = new Label(container, SWT.NONE);
165:                    label
166:                            .setText(PDEUIMessages.BaseExtensionPoint_schemaLocation);
167:                    fSchemaLocationText = new Text(container, SWT.SINGLE
168:                            | SWT.BORDER);
169:                    gd = new GridData(GridData.FILL_HORIZONTAL);
170:                    gd.widthHint = 150;
171:                    gd.grabExcessHorizontalSpace = true;
172:                    fSchemaLocationText.setLayoutData(gd);
173:                    fSchemaLocationText.addModifyListener(new ModifyListener() {
174:                        public void modifyText(ModifyEvent e) {
175:                            validatePage();
176:                        }
177:                    });
178:                    fFindLocationButton = new Button(container, SWT.PUSH);
179:                    gd = new GridData(GridData.HORIZONTAL_ALIGN_END);
180:                    gd.widthHint = 50;
181:                    fFindLocationButton.setLayoutData(gd);
182:                    fFindLocationButton
183:                            .setText(PDEUIMessages.BaseExtensionPointMainPage_findBrowse);
184:                    fFindLocationButton
185:                            .setToolTipText(PDEUIMessages.BaseExtensionPointMainPage_schemaLocation_tooltip);
186:                    fFindLocationButton
187:                            .addSelectionListener(new SelectionAdapter() {
188:                                public void widgetSelected(SelectionEvent e) {
189:                                    handleSchemaLocation();
190:                                }
191:                            });
192:                    SWTUtil.setButtonDimensionHint(fFindLocationButton);
193:                }
194:                label = new Label(container, SWT.NONE);
195:                label.setText(PDEUIMessages.BaseExtensionPoint_schema);
196:                fSchemaText = new Text(container, SWT.SINGLE | SWT.BORDER);
197:                gd = new GridData(GridData.FILL_HORIZONTAL);
198:                gd.horizontalSpan = 2;
199:                fSchemaText.setLayoutData(gd);
200:                fSchemaText.addModifyListener(new ModifyListener() {
201:                    public void modifyText(ModifyEvent e) {
202:                        validatePage();
203:                    }
204:                });
205:                if (isSharedSchemaSwitchNeeded()) {
206:                    fSharedSchemaButton = new Button(container, SWT.CHECK);
207:                    fSharedSchemaButton
208:                            .setText(PDEUIMessages.BaseExtensionPoint_shared);
209:                    gd = new GridData(GridData.FILL_HORIZONTAL);
210:                    gd.horizontalSpan = 2;
211:                    fSharedSchemaButton.setLayoutData(gd);
212:                }
213:                fOpenSchemaButton = new Button(container, SWT.CHECK);
214:                fOpenSchemaButton
215:                        .setText(PDEUIMessages.BaseExtensionPoint_edit);
216:                fOpenSchemaButton.setSelection(true);
217:                gd = new GridData(GridData.FILL_HORIZONTAL);
218:                gd.horizontalSpan = 2;
219:                fOpenSchemaButton.setLayoutData(gd);
220:                if (isPluginIdNeeded())
221:                    fPluginIdText.setFocus();
222:                else
223:                    fIdText.setFocus();
224:                setControl(container);
225:                initializeValues();
226:                validatePage();
227:                // do not start with an error message, convert to regular message
228:                String error = getErrorMessage();
229:                if (error != null) {
230:                    setMessage(error);
231:                    setErrorMessage(null);
232:                }
233:                Dialog.applyDialogFont(container);
234:                PlatformUI.getWorkbench().getHelpSystem().setHelp(container,
235:                        IHelpContextIds.NEW_SCHEMA);
236:            }
237:
238:            private InputStream createSchemaStream(String pluginId,
239:                    String pointId, String name, boolean shared) {
240:                if (name.length() == 0)
241:                    name = pointId;
242:                EditableSchema schema = new EditableSchema(pluginId, pointId,
243:                        name, false);
244:                schema
245:                        .setDescription(PDEUIMessages.BaseExtensionPoint_sections_overview);
246:                DocumentSection section;
247:                section = new DocumentSection(schema, IDocumentSection.SINCE,
248:                        PDEUIMessages.BaseExtensionPointMainPage_since);
249:                section
250:                        .setDescription(PDEUIMessages.BaseExtensionPoint_sections_since);
251:                schema.addDocumentSection(section);
252:                SchemaElement element;
253:                if (!shared) {
254:                    element = new SchemaRootElement(schema, "extension"); //$NON-NLS-1$
255:                    SchemaComplexType complexType = new SchemaComplexType(
256:                            schema);
257:                    element.setType(complexType);
258:                    SchemaAttribute attribute = new SchemaAttribute(element,
259:                            "point"); //$NON-NLS-1$
260:                    attribute.setType(new SchemaSimpleType(schema, "string")); //$NON-NLS-1$
261:                    attribute.setUse(ISchemaAttribute.REQUIRED);
262:                    complexType.addAttribute(attribute);
263:                    attribute = new SchemaAttribute(element, "id"); //$NON-NLS-1$
264:                    attribute.setType(new SchemaSimpleType(schema, "string")); //$NON-NLS-1$
265:                    complexType.addAttribute(attribute);
266:                    attribute = new SchemaAttribute(element, "name"); //$NON-NLS-1$
267:                    attribute.setType(new SchemaSimpleType(schema, "string")); //$NON-NLS-1$
268:                    attribute.setTranslatableProperty(true);
269:                    complexType.addAttribute(attribute);
270:                    schema.addElement(element);
271:                }
272:                section = new DocumentSection(schema,
273:                        IDocumentSection.EXAMPLES, "Examples"); //$NON-NLS-1$
274:                section
275:                        .setDescription(PDEUIMessages.BaseExtensionPoint_sections_usage);
276:                schema.addDocumentSection(section);
277:                section = new DocumentSection(schema,
278:                        IDocumentSection.API_INFO, "API Information"); //$NON-NLS-1$
279:                section
280:                        .setDescription(PDEUIMessages.BaseExtensionPoint_sections_api);
281:                schema.addDocumentSection(section);
282:                section = new DocumentSection(schema,
283:                        IDocumentSection.IMPLEMENTATION,
284:                        "Supplied Implementation"); //$NON-NLS-1$
285:                section
286:                        .setDescription(PDEUIMessages.BaseExtensionPoint_sections_supplied);
287:                schema.addDocumentSection(section);
288:                section = new DocumentSection(schema,
289:                        IDocumentSection.COPYRIGHT, "Copyright"); //$NON-NLS-1$
290:                section
291:                        .setDescription(PDEUIMessages.BaseExtensionPoint_sections_copyright);
292:                schema.addDocumentSection(section);
293:                StringWriter swriter = new StringWriter();
294:                try {
295:                    PrintWriter writer = new PrintWriter(swriter, true);
296:                    schema.save(writer);
297:                    swriter.close();
298:                } catch (IOException e) {
299:                    PDEPlugin.logException(e);
300:                }
301:                try {
302:                    return new ByteArrayInputStream(swriter.toString()
303:                            .getBytes("UTF8")); //$NON-NLS-1$
304:                } catch (UnsupportedEncodingException e) {
305:                    return new ByteArrayInputStream(new byte[0]);
306:                }
307:            }
308:
309:            private IFile generateSchemaFile(String pluginId, String id,
310:                    String name, boolean shared, String schema,
311:                    IProgressMonitor monitor) throws CoreException {
312:                IFile schemaFile = null;
313:
314:                IWorkspace workspace = fContainer.getWorkspace();
315:                IPath schemaPath = new Path(schema).removeLastSegments(1);
316:                IPath newSchemaPath = fContainer.getProjectRelativePath()
317:                        .append(schemaPath);
318:                monitor.subTask(PDEUIMessages.BaseExtensionPoint_generating);
319:                if (newSchemaPath.isEmpty() == false) {
320:                    IFolder folder = fContainer.getProject().getFolder(
321:                            newSchemaPath);
322:                    CoreUtility.createFolder(folder);
323:                }
324:                InputStream source = createSchemaStream(pluginId, id, name,
325:                        shared);
326:                IPath filePath = fContainer.getFullPath().append(schema);
327:                schemaFile = workspace.getRoot().getFile(filePath);
328:                if (!schemaFile.exists()) {
329:                    // create for the first time
330:                    schemaFile.create(source, true, monitor);
331:                } else {
332:                    schemaFile.setContents(source, true, false, monitor);
333:                }
334:                IDE.setDefaultEditor(schemaFile,
335:                        IPDEUIConstants.SCHEMA_EDITOR_ID);
336:                return schemaFile;
337:            }
338:
339:            public IRunnableWithProgress getOperation() {
340:                final boolean openFile = fOpenSchemaButton.getSelection();
341:                final String id = fIdText.getText();
342:                final String name = fNameText.getText();
343:                final String schema = fSchemaText.getText();
344:                final boolean shared = fSharedSchemaButton != null ? fSharedSchemaButton
345:                        .getSelection()
346:                        : false;
347:                IRunnableWithProgress operation = new WorkspaceModifyOperation() {
348:                    public void execute(final IProgressMonitor monitor) {
349:                        try {
350:                            Display.getDefault().asyncExec(new Runnable() {
351:
352:                                public void run() {
353:                                    String schemaName = schema;
354:                                    if (!schema.endsWith(".exsd")) //$NON-NLS-1$
355:                                        schemaName = schema + ".exsd"; //$NON-NLS-1$
356:
357:                                    IFile file = fContainer.getFile(new Path(
358:                                            schema));
359:                                    // do not overwrite if schema already exists
360:                                    if (!file.exists())
361:                                        try {
362:                                            file = generateSchemaFile(
363:                                                    getPluginId(), id, name,
364:                                                    shared, schemaName, monitor);
365:                                        } catch (CoreException e) {
366:                                            PDEPlugin.logException(e);
367:                                        }
368:
369:                                    if (file != null && openFile) {
370:                                        fSchemaText.setText(file
371:                                                .getProjectRelativePath()
372:                                                .toString());
373:                                        openSchemaFile(file);
374:                                    }
375:                                }
376:
377:                            });
378:
379:                        } finally {
380:                            monitor.done();
381:                        }
382:                    }
383:                };
384:                return operation;
385:            }
386:
387:            public String getSchemaLocation() {
388:                if (fSchemaText != null) {
389:                    String schema = fSchemaText.getText();
390:                    if (schema.length() == 0) {
391:                        if (fSchemaLocationText != null
392:                                && SCHEMA_DIR.equals(new Path(
393:                                        fSchemaLocationText.getText())
394:                                        .lastSegment())) {
395:                            return ""; //$NON-NLS-1$
396:                        }
397:                        return SCHEMA_DIR;
398:                    }
399:
400:                    int loc = schema.lastIndexOf("/"); //$NON-NLS-1$
401:                    if (loc != -1)
402:                        return schema.substring(0, loc);
403:                }
404:                return ""; //$NON-NLS-1$
405:            }
406:
407:            public String getPluginId() {
408:                if (fPluginIdText != null) {
409:                    return fPluginIdText.getText();
410:                }
411:                return ""; //$NON-NLS-1$
412:            }
413:
414:            protected boolean isPluginIdNeeded() {
415:                return false;
416:            }
417:
418:            protected boolean isPluginIdFinal() {
419:                return false;
420:            }
421:
422:            protected boolean isSharedSchemaSwitchNeeded() {
423:                return false;
424:            }
425:
426:            private void openSchemaFile(final IFile file) {
427:                final IWorkbenchWindow ww = PDEPlugin
428:                        .getActiveWorkbenchWindow();
429:                Display d = ww.getShell().getDisplay();
430:                d.asyncExec(new Runnable() {
431:                    public void run() {
432:                        try {
433:                            String editorId = IPDEUIConstants.SCHEMA_EDITOR_ID;
434:                            ww.getActivePage().openEditor(
435:                                    new FileEditorInput(file), editorId);
436:                        } catch (PartInitException e) {
437:                            PDEPlugin.logException(e);
438:                        }
439:                    }
440:                });
441:            }
442:
443:            private void validatePage() {
444:                // clear opening message
445:                setMessage(null);
446:                String message = validateFieldContents();
447:                setErrorMessage(message);
448:                setPageComplete(message == null);
449:            }
450:
451:            protected abstract String validateFieldContents();
452:
453:            protected abstract void initializeValues();
454:
455:            protected String validateExtensionPointID() {
456:
457:                // Verify not zero length
458:                String id = fIdText.getText();
459:                if (id.length() == 0)
460:                    return PDEUIMessages.BaseExtensionPointMainPage_missingExtensionPointID;
461:
462:                // For 3.2 or greater plug-ins verify that it is a valid composite ID
463:                // and that it has a valid namespace
464:                // For 3.1 and lower plug-ins verify that it is a valid simple ID
465:                String pluginID = getPluginId();
466:                IPluginModelBase model = PluginRegistry.findModel(pluginID);
467:                // Verify that the plugin was found
468:                if (model == null) {
469:                    return NLS
470:                            .bind(
471:                                    PDEUIMessages.BaseExtensionPointMainPage_errorMsgPluginNotFound,
472:                                    pluginID);
473:                }
474:
475:                String schemaVersion = model.getPluginBase().getSchemaVersion();
476:                if (schemaVersion == null
477:                        || Float.parseFloat(schemaVersion) >= 3.2) {
478:                    if (!IdUtil.isValidCompositeID(id))
479:                        return PDEUIMessages.BaseExtensionPointMainPage_invalidCompositeID;
480:
481:                } else if (!IdUtil.isValidSimpleID(id))
482:                    return PDEUIMessages.BaseExtensionPointMainPage_invalidSimpleID;
483:
484:                return null;
485:            }
486:
487:            protected String validateExtensionPointName() {
488:                // Verify not zero length
489:                if (fNameText.getText().length() == 0)
490:                    return PDEUIMessages.BaseExtensionPointMainPage_missingExtensionPointName;
491:
492:                return null;
493:            }
494:
495:            protected String validateExtensionPointSchema() {
496:                // Verify not zero length
497:                if (fSchemaText.getText().length() == 0)
498:                    return PDEUIMessages.BaseExtensionPointMainPage_missingExtensionPointSchema;
499:
500:                return null;
501:            }
502:
503:            private void handlePluginBrowse() {
504:                PluginSelectionDialog dialog = new PluginSelectionDialog(
505:                        getShell(), PluginRegistry.getWorkspaceModels(), false);
506:                dialog.create();
507:                if (dialog.open() == Window.OK) {
508:                    IPluginModelBase workspaceModelBase = (IPluginModelBase) dialog
509:                            .getFirstResult();
510:                    fPluginIdText.setText(workspaceModelBase.getPluginBase()
511:                            .getId());
512:                }
513:            }
514:
515:            private void handleSchemaLocation() {
516:                ElementTreeSelectionDialog dialog = new ElementTreeSelectionDialog(
517:                        getShell(), new WorkbenchLabelProvider(),
518:                        new WorkbenchContentProvider());
519:                dialog
520:                        .setTitle(PDEUIMessages.BaseExtensionPointMainPage_schemaLocation_title);
521:                dialog
522:                        .setMessage(PDEUIMessages.BaseExtensionPointMainPage_schemaLocation_desc);
523:                dialog.setDoubleClickSelects(false);
524:                dialog.setAllowMultiple(false);
525:                dialog.addFilter(new ViewerFilter() {
526:                    public boolean select(Viewer viewer, Object parentElement,
527:                            Object element) {
528:                        if (element instanceof  IFile)
529:                            return false;
530:                        return true;
531:                    }
532:                });
533:
534:                dialog.setInput(PDEPlugin.getWorkspace().getRoot());
535:                dialog.setComparator(new ResourceComparator(
536:                        ResourceComparator.NAME));
537:                dialog.setInitialSelection(fContainer);
538:                if (dialog.open() == Window.OK) {
539:                    Object[] elements = dialog.getResult();
540:                    if (elements.length > 0) {
541:                        IResource elem = (IResource) elements[0];
542:                        String newPath = getWorkspaceRelativePath(elem
543:                                .getLocation().toString());
544:                        fSchemaLocationText.setText(newPath + "/"); //$NON-NLS-1$
545:                    }
546:                }
547:            }
548:
549:            private String getWorkspaceRelativePath(String path) {
550:                String workspacePath = PDECore.getWorkspace().getRoot()
551:                        .getLocation().toString();
552:                if (path.startsWith(workspacePath))
553:                    path = path.replaceFirst(workspacePath, ""); //$NON-NLS-1$
554:                return path;
555:            }
556:
557:            public String getInvalidIdMessage() {
558:                // No validation done (other than making sure id is not blank)
559:                return null;
560:            }
561:
562:        }
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