| /******************************************************************************* |
| * Copyright (c) 2000, 2005 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.jdt.internal.ui.javaeditor; |
| |
| |
| |
| import org.eclipse.jface.preference.IPreferenceStore; |
| import org.eclipse.jface.util.IPropertyChangeListener; |
| import org.eclipse.jface.util.PropertyChangeEvent; |
| |
| import org.eclipse.ui.PlatformUI; |
| import org.eclipse.ui.texteditor.ITextEditor; |
| import org.eclipse.ui.texteditor.TextEditorAction; |
| |
| import org.eclipse.jdt.ui.PreferenceConstants; |
| import org.eclipse.jdt.ui.actions.IJavaEditorActionDefinitionIds; |
| |
| import org.eclipse.jdt.internal.ui.IJavaHelpContextIds; |
| import org.eclipse.jdt.internal.ui.JavaPlugin; |
| import org.eclipse.jdt.internal.ui.JavaPluginImages; |
| |
| |
| /** |
| * A toolbar action which toggles the enabling state of the |
| * editor's text hover. |
| */ |
| public class ToggleTextHoverAction extends TextEditorAction implements IPropertyChangeListener { |
| |
| |
| private IPreferenceStore fStore; |
| |
| /** |
| * Constructs and updates the action. |
| */ |
| public ToggleTextHoverAction() { |
| super(JavaEditorMessages.getBundleForConstructedKeys(), "ToggleTextHover.", null); //$NON-NLS-1$ |
| JavaPluginImages.setToolImageDescriptors(this, "jdoc_hover_edit.gif"); //$NON-NLS-1$ |
| setActionDefinitionId(IJavaEditorActionDefinitionIds.TOGGLE_TEXT_HOVER); |
| PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.TOGGLE_TEXTHOVER_ACTION); |
| update(); |
| } |
| |
| /* |
| * @see IAction#actionPerformed |
| */ |
| public void run() { |
| ITextEditor editor= getTextEditor(); |
| if (editor == null) |
| return; |
| |
| boolean showHover= !fStore.getBoolean(PreferenceConstants.EDITOR_SHOW_HOVER); |
| setChecked(showHover); |
| |
| fStore.removePropertyChangeListener(this); |
| fStore.setValue(PreferenceConstants.EDITOR_SHOW_HOVER, showHover); |
| fStore.addPropertyChangeListener(this); |
| } |
| |
| /* |
| * @see TextEditorAction#update |
| */ |
| public void update() { |
| boolean showHover= fStore != null && fStore.getBoolean(PreferenceConstants.EDITOR_SHOW_HOVER); |
| setChecked(showHover); |
| setEnabled(getTextEditor() != null); |
| } |
| |
| /* |
| * @see TextEditorAction#setEditor(ITextEditor) |
| */ |
| public void setEditor(ITextEditor editor) { |
| super.setEditor(editor); |
| if (editor != null) { |
| if (fStore == null) { |
| fStore= JavaPlugin.getDefault().getPreferenceStore(); |
| fStore.addPropertyChangeListener(this); |
| } |
| } else if (fStore != null) { |
| fStore.removePropertyChangeListener(this); |
| fStore= null; |
| } |
| update(); |
| } |
| |
| /* |
| * @see IPropertyChangeListener#propertyChange(PropertyChangeEvent) |
| */ |
| public void propertyChange(PropertyChangeEvent event) { |
| if (event.getProperty().equals(PreferenceConstants.EDITOR_SHOW_HOVER)) |
| update(); |
| } |
| } |