| /******************************************************************************* |
| * Copyright (c) 2000, 2008 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.dltk.internal.ui.editor; |
| |
| import org.eclipse.dltk.ui.DLTKPluginImages; |
| import org.eclipse.dltk.ui.DLTKUILanguageManager; |
| import org.eclipse.dltk.ui.IDLTKUILanguageToolkit; |
| import org.eclipse.dltk.ui.PreferenceConstants; |
| import org.eclipse.jface.action.IAction; |
| import org.eclipse.jface.preference.IPreferenceStore; |
| import org.eclipse.jface.util.IPropertyChangeListener; |
| import org.eclipse.jface.util.PropertyChangeEvent; |
| import org.eclipse.ui.texteditor.ITextEditor; |
| import org.eclipse.ui.texteditor.TextEditorAction; |
| |
| /** |
| * A toolbar action which toggles the |
| * {@linkplain PreferenceConstants#EDITOR_MARK_OCCURRENCES mark occurrences |
| * preference}. |
| * |
| * @since 3.0 |
| */ |
| public class ToggleMarkOccurrencesAction extends TextEditorAction implements |
| IPropertyChangeListener { |
| |
| private IPreferenceStore fStore; |
| |
| /** |
| * Constructs and updates the action. |
| */ |
| public ToggleMarkOccurrencesAction() { |
| super(ScriptEditorMessages.getBundleForConstructedKeys(), |
| "ToggleMarkOccurrencesAction.", null, IAction.AS_CHECK_BOX); //$NON-NLS-1$ |
| DLTKPluginImages.setToolImageDescriptors(this, "mark_occurrences.png"); //$NON-NLS-1$ |
| // PlatformUI.getWorkbench().getHelpSystem().setHelp(this, |
| // IJavaHelpContextIds.TOGGLE_MARK_OCCURRENCES_ACTION); |
| update(); |
| } |
| |
| /* |
| * @see IAction#actionPerformed |
| */ |
| public void run() { |
| if (fStore != null) { |
| fStore.setValue(PreferenceConstants.EDITOR_MARK_OCCURRENCES, |
| isChecked()); |
| } |
| } |
| |
| /* |
| * @see TextEditorAction#update |
| */ |
| public void update() { |
| final ITextEditor editor = getTextEditor(); |
| final OccurrencesFinder occurrencesFinder = (editor != null) ? (OccurrencesFinder) editor |
| .getAdapter(OccurrencesFinder.class) : null; |
| setEnabled(occurrencesFinder != null); |
| setChecked(occurrencesFinder != null |
| && occurrencesFinder.isMarkingOccurrences()); |
| } |
| |
| /* |
| * @see TextEditorAction#setEditor(ITextEditor) |
| */ |
| public void setEditor(ITextEditor editor) { |
| super.setEditor(editor); |
| if (editor != null) { |
| disconnectPreferenceStore(); |
| if (editor instanceof ScriptEditor) { |
| final IDLTKUILanguageToolkit toolkit = DLTKUILanguageManager |
| .getLanguageToolkit(((ScriptEditor) editor) |
| .getLanguageToolkit()); |
| if (toolkit != null) { |
| fStore = toolkit.getPreferenceStore(); |
| if (fStore != null) { |
| fStore.addPropertyChangeListener(this); |
| } |
| } |
| } |
| } else { |
| disconnectPreferenceStore(); |
| } |
| update(); |
| } |
| |
| private void disconnectPreferenceStore() { |
| if (fStore != null) { |
| fStore.removePropertyChangeListener(this); |
| fStore = null; |
| } |
| } |
| |
| /* |
| * @see IPropertyChangeListener#propertyChange(PropertyChangeEvent) |
| */ |
| public void propertyChange(PropertyChangeEvent event) { |
| if (event.getProperty().equals( |
| PreferenceConstants.EDITOR_MARK_OCCURRENCES)) |
| setChecked(Boolean.valueOf(event.getNewValue().toString()) |
| .booleanValue()); |
| } |
| } |