net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/preferences/CodeTemplateBlock.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2004 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package net.sourceforge.phpdt.internal.ui.preferences;
  12
  13 import java.io.BufferedInputStream;
  14 import java.io.BufferedOutputStream;
  15 import java.io.File;
  16 import java.io.FileInputStream;
  17 import java.io.FileNotFoundException;
  18 import java.io.FileOutputStream;
  19 import java.io.IOException;
  20 import java.io.InputStream;
  21 import java.io.OutputStream;
  22 import java.util.ArrayList;
  23 import java.util.Arrays;
  24 import java.util.List;
  25
  26 import net.sourceforge.phpdt.internal.corext.template.php.CodeTemplateContextType;
  27 import net.sourceforge.phpdt.internal.ui.text.IPHPPartitions;
  28 import net.sourceforge.phpdt.internal.ui.text.template.preferences.TemplateVariableProcessor;
  29 import net.sourceforge.phpdt.internal.ui.util.PixelConverter;
  30 import net.sourceforge.phpdt.internal.ui.wizards.dialogfields.DialogField;
  31 import net.sourceforge.phpdt.internal.ui.wizards.dialogfields.IDialogFieldListener;
  32 import net.sourceforge.phpdt.internal.ui.wizards.dialogfields.ITreeListAdapter;
  33 import net.sourceforge.phpdt.internal.ui.wizards.dialogfields.LayoutUtil;
  34 import net.sourceforge.phpdt.internal.ui.wizards.dialogfields.SelectionButtonDialogField;
  35 import net.sourceforge.phpdt.internal.ui.wizards.dialogfields.TreeListDialogField;
  36 import net.sourceforge.phpdt.ui.PreferenceConstants;
  37 import net.sourceforge.phpdt.ui.text.JavaTextTools;
  38 //import net.sourceforge.phpeclipse.PHPeclipsePlugin;
  39 import net.sourceforge.phpeclipse.phpeditor.JavaSourceViewer;
  40 import net.sourceforge.phpeclipse.ui.WebUI;
  41
  42 import org.eclipse.jface.dialogs.MessageDialog;
  43 import org.eclipse.jface.preference.IPreferenceStore;
  44 import org.eclipse.jface.resource.JFaceResources;
  45 import org.eclipse.jface.text.Document;
  46 import org.eclipse.jface.text.IDocument;
  47 import org.eclipse.jface.text.source.SourceViewer;
  48 import org.eclipse.jface.text.templates.Template;
  49 import org.eclipse.jface.text.templates.TemplateContextType;
  50 import org.eclipse.jface.text.templates.persistence.TemplatePersistenceData;
  51 import org.eclipse.jface.text.templates.persistence.TemplateReaderWriter;
  52 import org.eclipse.jface.text.templates.persistence.TemplateStore;
  53 import org.eclipse.jface.viewers.LabelProvider;
  54 import org.eclipse.jface.viewers.StructuredSelection;
  55 import org.eclipse.jface.window.Window;
  56 import org.eclipse.swt.SWT;
  57 import org.eclipse.swt.events.KeyEvent;
  58 import org.eclipse.swt.graphics.Font;
  59 import org.eclipse.swt.graphics.Image;
  60 import org.eclipse.swt.layout.GridData;
  61 import org.eclipse.swt.layout.GridLayout;
  62 import org.eclipse.swt.widgets.Composite;
  63 import org.eclipse.swt.widgets.Control;
  64 import org.eclipse.swt.widgets.FileDialog;
  65 import org.eclipse.swt.widgets.Label;
  66 import org.eclipse.swt.widgets.Shell;
  67
  68 /**
  69  */
  70 public class CodeTemplateBlock {
  71
  72         private class CodeTemplateAdapter implements ITreeListAdapter,
  73                         IDialogFieldListener {
  74
  75                 private final Object[] NO_CHILDREN = new Object[0];
  76
  77                 public void customButtonPressed(TreeListDialogField field, int index) {
  78                         doButtonPressed(index, field.getSelectedElements());
  79                 }
  80
  81                 public void selectionChanged(TreeListDialogField field) {
  82                         List selected = field.getSelectedElements();
  83                         field.enableButton(IDX_EDIT, canEdit(selected));
  84                         field.enableButton(IDX_EXPORT, !selected.isEmpty());
  85
  86                         updateSourceViewerInput(selected);
  87                 }
  88
  89                 public void doubleClicked(TreeListDialogField field) {
  90                         List selected = field.getSelectedElements();
  91                         if (canEdit(selected)) {
  92                                 doButtonPressed(IDX_EDIT, selected);
  93                         }
  94                 }
  95
  96                 public Object[] getChildren(TreeListDialogField field, Object element) {
  97                         if (element == COMMENT_NODE || element == CODE_NODE) {
  98                                 return getTemplateOfCategory(element == COMMENT_NODE);
  99                         }
 100                         return NO_CHILDREN;
 101                 }
 102
 103                 public Object getParent(TreeListDialogField field, Object element) {
 104                         if (element instanceof TemplatePersistenceData) {
 105                                 TemplatePersistenceData data = (TemplatePersistenceData) element;
 106                                 if (data.getTemplate().getName().endsWith(
 107                                                 CodeTemplateContextType.COMMENT_SUFFIX)) {
 108                                         return COMMENT_NODE;
 109                                 }
 110                                 return CODE_NODE;
 111                         }
 112                         return null;
 113                 }
 114
 115                 public boolean hasChildren(TreeListDialogField field, Object element) {
 116                         return (element == COMMENT_NODE || element == CODE_NODE);
 117                 }
 118
 119                 public void dialogFieldChanged(DialogField field) {
 120                 }
 121
 122                 public void keyPressed(TreeListDialogField field, KeyEvent event) {
 123                 }
 124
 125         }
 126
 127         private static class CodeTemplateLabelProvider extends LabelProvider {
 128
 129                 /*
 130                  * (non-Javadoc)
 131                  *
 132                  * @see org.eclipse.jface.viewers.ILabelProvider#getImage(java.lang.Object)
 133                  */
 134                 public Image getImage(Object element) {
 135                         return null;
 136
 137                 }
 138
 139                 /*
 140                  * (non-Javadoc)
 141                  *
 142                  * @see org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object)
 143                  */
 144                 public String getText(Object element) {
 145                         if (element == COMMENT_NODE || element == CODE_NODE) {
 146                                 return (String) element;
 147                         }
 148                         TemplatePersistenceData data = (TemplatePersistenceData) element;
 149                         Template template = data.getTemplate();
 150                         String name = template.getName();
 151                         if (CodeTemplateContextType.CATCHBLOCK.equals(name)) {
 152                                 return PreferencesMessages
 153                                                 .getString("CodeTemplateBlock.catchblock.label"); //$NON-NLS-1$
 154                         } else if (CodeTemplateContextType.METHODSTUB.equals(name)) {
 155                                 return PreferencesMessages
 156                                                 .getString("CodeTemplateBlock.methodstub.label"); //$NON-NLS-1$
 157                         } else if (CodeTemplateContextType.CONSTRUCTORSTUB.equals(name)) {
 158                                 return PreferencesMessages
 159                                                 .getString("CodeTemplateBlock.constructorstub.label"); //$NON-NLS-1$
 160                         } else if (CodeTemplateContextType.GETTERSTUB.equals(name)) {
 161                                 return PreferencesMessages
 162                                                 .getString("CodeTemplateBlock.getterstub.label"); //$NON-NLS-1$
 163                         } else if (CodeTemplateContextType.SETTERSTUB.equals(name)) {
 164                                 return PreferencesMessages
 165                                                 .getString("CodeTemplateBlock.setterstub.label"); //$NON-NLS-1$
 166                         } else if (CodeTemplateContextType.NEWTYPE.equals(name)) {
 167                                 return PreferencesMessages
 168                                                 .getString("CodeTemplateBlock.newtype.label"); //$NON-NLS-1$
 169                         } else if (CodeTemplateContextType.TYPECOMMENT.equals(name)) {
 170                                 return PreferencesMessages
 171                                                 .getString("CodeTemplateBlock.typecomment.label"); //$NON-NLS-1$
 172                         } else if (CodeTemplateContextType.FIELDCOMMENT.equals(name)) {
 173                                 return PreferencesMessages
 174                                                 .getString("CodeTemplateBlock.fieldcomment.label"); //$NON-NLS-1$
 175                         } else if (CodeTemplateContextType.METHODCOMMENT.equals(name)) {
 176                                 return PreferencesMessages
 177                                                 .getString("CodeTemplateBlock.methodcomment.label"); //$NON-NLS-1$
 178                         } else if (CodeTemplateContextType.OVERRIDECOMMENT.equals(name)) {
 179                                 return PreferencesMessages
 180                                                 .getString("CodeTemplateBlock.overridecomment.label"); //$NON-NLS-1$
 181                         } else if (CodeTemplateContextType.CONSTRUCTORCOMMENT.equals(name)) {
 182                                 return PreferencesMessages
 183                                                 .getString("CodeTemplateBlock.constructorcomment.label"); //$NON-NLS-1$
 184                         } else if (CodeTemplateContextType.GETTERCOMMENT.equals(name)) {
 185                                 return PreferencesMessages
 186                                                 .getString("CodeTemplateBlock.gettercomment.label"); //$NON-NLS-1$
 187                         } else if (CodeTemplateContextType.SETTERCOMMENT.equals(name)) {
 188                                 return PreferencesMessages
 189                                                 .getString("CodeTemplateBlock.settercomment.label"); //$NON-NLS-1$
 190                         }
 191                         return template.getDescription();
 192                 }
 193
 194         }
 195
 196         private final static int IDX_EDIT = 0;
 197
 198         private final static int IDX_IMPORT = 2;
 199
 200         private final static int IDX_EXPORT = 3;
 201
 202         private final static int IDX_EXPORTALL = 4;
 203
 204         protected final static Object COMMENT_NODE = PreferencesMessages
 205                         .getString("CodeTemplateBlock.templates.comment.node"); //$NON-NLS-1$
 206
 207         protected final static Object CODE_NODE = PreferencesMessages
 208                         .getString("CodeTemplateBlock.templates.code.node"); //$NON-NLS-1$
 209
 210         private static final String PREF_JAVADOC_STUBS = PreferenceConstants.CODEGEN_ADD_COMMENTS;
 211
 212         private TreeListDialogField fCodeTemplateTree;
 213
 214         private SelectionButtonDialogField fCreateJavaDocComments;
 215
 216         protected TemplateStore fTemplates;
 217
 218         private PixelConverter fPixelConverter;
 219
 220         private SourceViewer fPatternViewer;
 221
 222         private Control fSWTWidget;
 223
 224         private TemplateVariableProcessor fTemplateProcessor;
 225
 226         public CodeTemplateBlock() {
 227
 228                 fTemplates = WebUI.getDefault().getCodeTemplateStore();
 229                 fTemplateProcessor = new TemplateVariableProcessor();
 230
 231                 CodeTemplateAdapter adapter = new CodeTemplateAdapter();
 232
 233                 String[] buttonLabels = new String[] {
 234                                 /* IDX_EDIT */PreferencesMessages
 235                                                 .getString("CodeTemplateBlock.templates.edit.button"), //$NON-NLS-1$
 236                                 /* */null,
 237                                 /* IDX_IMPORT */PreferencesMessages
 238                                                 .getString("CodeTemplateBlock.templates.import.button"), //$NON-NLS-1$
 239                                 /* IDX_EXPORT */PreferencesMessages
 240                                                 .getString("CodeTemplateBlock.templates.export.button"), //$NON-NLS-1$
 241                                 /* IDX_EXPORTALL */PreferencesMessages
 242                                                 .getString("CodeTemplateBlock.templates.exportall.button") //$NON-NLS-1$
 243
 244                 };
 245                 fCodeTemplateTree = new TreeListDialogField(adapter, buttonLabels,
 246                                 new CodeTemplateLabelProvider());
 247                 fCodeTemplateTree.setDialogFieldListener(adapter);
 248                 fCodeTemplateTree.setLabelText(PreferencesMessages
 249                                 .getString("CodeTemplateBlock.templates.label")); //$NON-NLS-1$
 250
 251                 fCodeTemplateTree.enableButton(IDX_EXPORT, false);
 252                 fCodeTemplateTree.enableButton(IDX_EDIT, false);
 253
 254                 fCodeTemplateTree.addElement(COMMENT_NODE);
 255                 fCodeTemplateTree.addElement(CODE_NODE);
 256
 257                 fCreateJavaDocComments = new SelectionButtonDialogField(SWT.CHECK
 258                                 | SWT.WRAP);
 259                 fCreateJavaDocComments.setLabelText(PreferencesMessages
 260                                 .getString("CodeTemplateBlock.createcomment.label")); //$NON-NLS-1$
 261                 fCreateJavaDocComments.setSelection(PreferenceConstants
 262                                 .getPreferenceStore().getBoolean(PREF_JAVADOC_STUBS));
 263
 264                 fCodeTemplateTree.selectFirstElement();
 265         }
 266
 267         protected Control createContents(Composite parent) {
 268                 fPixelConverter = new PixelConverter(parent);
 269                 fSWTWidget = parent;
 270
 271                 Composite composite = new Composite(parent, SWT.NONE);
 272                 GridLayout layout = new GridLayout();
 273                 layout.marginHeight = 0;
 274                 layout.marginWidth = 0;
 275                 layout.numColumns = 2;
 276                 composite.setLayout(layout);
 277
 278                 fCodeTemplateTree.doFillIntoGrid(composite, 3);
 279                 LayoutUtil
 280                                 .setHorizontalSpan(fCodeTemplateTree.getLabelControl(null), 2);
 281                 LayoutUtil
 282                                 .setHorizontalGrabbing(fCodeTemplateTree.getTreeControl(null));
 283
 284                 fPatternViewer = createViewer(composite, 2);
 285
 286                 fCreateJavaDocComments.doFillIntoGrid(composite, 2);
 287
 288                 DialogField label = new DialogField();
 289                 label.setLabelText(PreferencesMessages
 290                                 .getString("CodeTemplateBlock.createcomment.description")); //$NON-NLS-1$
 291                 label.doFillIntoGrid(composite, 2);
 292
 293                 return composite;
 294
 295         }
 296
 297         private Shell getShell() {
 298                 if (fSWTWidget != null) {
 299                         return fSWTWidget.getShell();
 300                 }
 301                 return WebUI.getActiveWorkbenchShell();
 302         }
 303
 304         private SourceViewer createViewer(Composite parent, int nColumns) {
 305                 Label label = new Label(parent, SWT.NONE);
 306                 label.setText(PreferencesMessages
 307                                 .getString("CodeTemplateBlock.preview")); //$NON-NLS-1$
 308                 GridData data = new GridData();
 309                 data.horizontalSpan = nColumns;
 310                 label.setLayoutData(data);
 311
 312                 IDocument document = new Document();
 313                 JavaTextTools tools = WebUI.getDefault().getJavaTextTools();
 314                 tools.setupJavaDocumentPartitioner(document,
 315                                 IPHPPartitions.PHP_PARTITIONING);
 316                 IPreferenceStore store = WebUI.getDefault()
 317                                 .getCombinedPreferenceStore();
 318                 SourceViewer viewer = new JavaSourceViewer(parent, null, null, false,
 319                                 SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL, store);
 320                 TemplateEditorSourceViewerConfiguration configuration = new TemplateEditorSourceViewerConfiguration(
 321                                 tools.getColorManager(), store, null, fTemplateProcessor);
 322                 viewer.configure(configuration);
 323                 viewer.setEditable(false);
 324                 viewer.setDocument(document);
 325
 326                 Font font = JFaceResources
 327                                 .getFont(PreferenceConstants.EDITOR_TEXT_FONT);
 328                 viewer.getTextWidget().setFont(font);
 329                 new JavaSourcePreviewerUpdater(viewer, configuration, store);
 330
 331                 Control control = viewer.getControl();
 332                 data = new GridData(GridData.HORIZONTAL_ALIGN_FILL
 333                                 | GridData.FILL_VERTICAL);
 334                 data.horizontalSpan = nColumns;
 335                 data.heightHint = fPixelConverter.convertHeightInCharsToPixels(5);
 336                 control.setLayoutData(data);
 337
 338                 return viewer;
 339         }
 340
 341         protected TemplatePersistenceData[] getTemplateOfCategory(boolean isComment) {
 342                 ArrayList res = new ArrayList();
 343                 TemplatePersistenceData[] templates = fTemplates.getTemplateData(false);
 344                 for (int i = 0; i < templates.length; i++) {
 345                         TemplatePersistenceData curr = templates[i];
 346                         if (isComment == curr.getTemplate().getName().endsWith(
 347                                         CodeTemplateContextType.COMMENT_SUFFIX)) {
 348                                 res.add(curr);
 349                         }
 350                 }
 351                 return (TemplatePersistenceData[]) res
 352                                 .toArray(new TemplatePersistenceData[res.size()]);
 353         }
 354
 355         protected static boolean canEdit(List selected) {
 356                 return selected.size() == 1
 357                                 && (selected.get(0) instanceof TemplatePersistenceData);
 358         }
 359
 360         protected void updateSourceViewerInput(List selection) {
 361                 if (fPatternViewer == null
 362                                 || fPatternViewer.getTextWidget().isDisposed()) {
 363                         return;
 364                 }
 365                 if (selection.size() == 1
 366                                 && selection.get(0) instanceof TemplatePersistenceData) {
 367                         TemplatePersistenceData data = (TemplatePersistenceData) selection
 368                                         .get(0);
 369                         Template template = data.getTemplate();
 370                         TemplateContextType type = WebUI.getDefault()
 371                                         .getCodeTemplateContextRegistry().getContextType(
 372                                                         template.getContextTypeId());
 373                         fTemplateProcessor.setContextType(type);
 374                         fPatternViewer.getDocument().set(template.getPattern());
 375                 } else {
 376                         fPatternViewer.getDocument().set(""); //$NON-NLS-1$
 377                 }
 378         }
 379
 380         protected void doButtonPressed(int buttonIndex, List selected) {
 381                 if (buttonIndex == IDX_EDIT) {
 382                         edit((TemplatePersistenceData) selected.get(0));
 383                 } else if (buttonIndex == IDX_EXPORT) {
 384                         export(selected);
 385                 } else if (buttonIndex == IDX_EXPORTALL) {
 386                         exportAll();
 387                 } else if (buttonIndex == IDX_IMPORT) {
 388                         import_();
 389                 }
 390         }
 391
 392         private void edit(TemplatePersistenceData data) {
 393                 Template newTemplate = new Template(data.getTemplate());
 394                 EditTemplateDialog dialog = new EditTemplateDialog(getShell(),
 395                                 newTemplate, true, false, WebUI.getDefault()
 396                                                 .getCodeTemplateContextRegistry());
 397                 if (dialog.open() == Window.OK) {
 398                         // changed
 399                         data.setTemplate(newTemplate);
 400                         fCodeTemplateTree.refresh(data);
 401                         fCodeTemplateTree.selectElements(new StructuredSelection(data));
 402                 }
 403         }
 404
 405         private void import_() {
 406                 FileDialog dialog = new FileDialog(getShell());
 407                 dialog.setText(PreferencesMessages
 408                                 .getString("CodeTemplateBlock.import.title")); //$NON-NLS-1$
 409                 dialog.setFilterExtensions(new String[] { PreferencesMessages
 410                                 .getString("CodeTemplateBlock.import.extension") }); //$NON-NLS-1$
 411                 String path = dialog.open();
 412
 413                 if (path == null)
 414                         return;
 415
 416                 try {
 417                         TemplateReaderWriter reader = new TemplateReaderWriter();
 418                         File file = new File(path);
 419                         if (file.exists()) {
 420                                 InputStream input = new BufferedInputStream(
 421                                                 new FileInputStream(file));
 422                                 TemplatePersistenceData[] datas = reader.read(input, null);
 423                                 for (int i = 0; i < datas.length; i++) {
 424                                         updateTemplate(datas[i]);
 425                                 }
 426                         }
 427
 428                         fCodeTemplateTree.refresh();
 429                         updateSourceViewerInput(fCodeTemplateTree.getSelectedElements());
 430
 431                 } catch (FileNotFoundException e) {
 432                         openReadErrorDialog(e);
 433                 } catch (IOException e) {
 434                         openReadErrorDialog(e);
 435                 }
 436
 437         }
 438
 439         private void updateTemplate(TemplatePersistenceData data) {
 440                 TemplatePersistenceData[] datas = fTemplates.getTemplateData(true);
 441                 for (int i = 0; i < datas.length; i++) {
 442                         String id = datas[i].getId();
 443                         if (id != null && id.equals(data.getId())) {
 444                                 datas[i].setTemplate(data.getTemplate());
 445                                 break;
 446                         }
 447                 }
 448         }
 449
 450         private void exportAll() {
 451                 export(fTemplates.getTemplateData(false));
 452         }
 453
 454         private void export(List selected) {
 455                 List datas = new ArrayList();
 456                 for (int i = 0; i < selected.size(); i++) {
 457                         Object curr = selected.get(i);
 458                         if (curr instanceof TemplatePersistenceData) {
 459                                 datas.add(curr);
 460                         } else {
 461                                 TemplatePersistenceData[] cat = getTemplateOfCategory(curr == COMMENT_NODE);
 462                                 datas.addAll(Arrays.asList(cat));
 463                         }
 464                 }
 465                 export((TemplatePersistenceData[]) datas
 466                                 .toArray(new TemplatePersistenceData[datas.size()]));
 467         }
 468
 469         private void export(TemplatePersistenceData[] templates) {
 470                 FileDialog dialog = new FileDialog(getShell(), SWT.SAVE);
 471                 dialog
 472                                 .setText(PreferencesMessages
 473                                                 .getFormattedString(
 474                                                                 "CodeTemplateBlock.export.title", String.valueOf(templates.length))); //$NON-NLS-1$
 475                 dialog.setFilterExtensions(new String[] { PreferencesMessages
 476                                 .getString("CodeTemplateBlock.export.extension") }); //$NON-NLS-1$
 477                 dialog.setFileName(PreferencesMessages
 478                                 .getString("CodeTemplateBlock.export.filename")); //$NON-NLS-1$
 479                 String path = dialog.open();
 480
 481                 if (path == null)
 482                         return;
 483
 484                 File file = new File(path);
 485
 486                 if (file.isHidden()) {
 487                         String title = PreferencesMessages
 488                                         .getString("CodeTemplateBlock.export.error.title"); //$NON-NLS-1$
 489                         String message = PreferencesMessages
 490                                         .getFormattedString(
 491                                                         "CodeTemplateBlock.export.error.hidden", file.getAbsolutePath()); //$NON-NLS-1$
 492                         MessageDialog.openError(getShell(), title, message);
 493                         return;
 494                 }
 495
 496                 if (file.exists() && !file.canWrite()) {
 497                         String title = PreferencesMessages
 498                                         .getString("CodeTemplateBlock.export.error.title"); //$NON-NLS-1$
 499                         String message = PreferencesMessages
 500                                         .getFormattedString(
 501                                                         "CodeTemplateBlock.export.error.canNotWrite", file.getAbsolutePath()); //$NON-NLS-1$
 502                         MessageDialog.openError(getShell(), title, message);
 503                         return;
 504                 }
 505
 506                 if (!file.exists() || confirmOverwrite(file)) {
 507                         try {
 508                                 OutputStream output = new BufferedOutputStream(
 509                                                 new FileOutputStream(file));
 510                                 TemplateReaderWriter writer = new TemplateReaderWriter();
 511                                 writer.save(templates, output);
 512                         } catch (IOException e) {
 513                                 openWriteErrorDialog(e);
 514                         }
 515                 }
 516
 517         }
 518
 519         private boolean confirmOverwrite(File file) {
 520                 return MessageDialog
 521                                 .openQuestion(
 522                                                 getShell(),
 523                                                 PreferencesMessages
 524                                                                 .getString("CodeTemplateBlock.export.exists.title"), //$NON-NLS-1$
 525                                                 PreferencesMessages
 526                                                                 .getFormattedString(
 527                                                                                 "CodeTemplateBlock.export.exists.message", file.getAbsolutePath())); //$NON-NLS-1$
 528         }
 529
 530         public void performDefaults() {
 531                 IPreferenceStore prefs = WebUI.getDefault()
 532                                 .getPreferenceStore();
 533                 fCreateJavaDocComments.setSelection(prefs
 534                                 .getDefaultBoolean(PREF_JAVADOC_STUBS));
 535
 536                 fTemplates.restoreDefaults();
 537
 538                 // refresh
 539                 fCodeTemplateTree.refresh();
 540                 updateSourceViewerInput(fCodeTemplateTree.getSelectedElements());
 541         }
 542
 543         public boolean performOk(boolean enabled) {
 544                 IPreferenceStore prefs = PreferenceConstants.getPreferenceStore();
 545                 prefs.setValue(PREF_JAVADOC_STUBS, fCreateJavaDocComments.isSelected());
 546                 WebUI.getDefault().savePluginPreferences();
 547
 548                 try {
 549                         fTemplates.save();
 550                 } catch (IOException e) {
 551                         WebUI.log(e);
 552                         openWriteErrorDialog(e);
 553                 }
 554                 return true;
 555         }
 556
 557         public void performCancel() {
 558                 try {
 559                         fTemplates.load();
 560                 } catch (IOException e) {
 561                         openReadErrorDialog(e);
 562                 }
 563         }
 564
 565         private void openReadErrorDialog(Exception e) {
 566                 String title = PreferencesMessages
 567                                 .getString("CodeTemplateBlock.error.read.title"); //$NON-NLS-1$
 568
 569                 String message = e.getLocalizedMessage();
 570                 if (message != null)
 571                         message = PreferencesMessages.getFormattedString(
 572                                         "CodeTemplateBlock.error.parse.message", message); //$NON-NLS-1$
 573                 else
 574                         message = PreferencesMessages
 575                                         .getString("CodeTemplateBlock.error.read.message"); //$NON-NLS-1$
 576                 MessageDialog.openError(getShell(), title, message);
 577         }
 578
 579         private void openWriteErrorDialog(Exception e) {
 580                 String title = PreferencesMessages
 581                                 .getString("CodeTemplateBlock.error.write.title"); //$NON-NLS-1$
 582                 String message = PreferencesMessages
 583                                 .getString("CodeTemplateBlock.error.write.message"); //$NON-NLS-1$
 584                 MessageDialog.openError(getShell(), title, message);
 585         }
 586
 587 }