/*******************************************************************************
* Copyright (c) 2000, 2012 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
* Anton Leherbauer (Wind River Systems)
*******************************************************************************/
package org.eclipse.cdt.internal.ui.editor;
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.PlatformUI;
import org.eclipse.ui.texteditor.ITextEditor;
import org.eclipse.ui.texteditor.TextEditorAction;
import org.eclipse.cdt.ui.CUIPlugin;
import org.eclipse.cdt.ui.PreferenceConstants;
import org.eclipse.cdt.internal.ui.CPluginImages;
import org.eclipse.cdt.internal.ui.ICHelpContextIds;
/**
* A toolbar action which toggles the
* {@linkplain org.eclipse.cdt.ui.PreferenceConstants#EDITOR_MARK_OCCURRENCES mark occurrences preference}.
*
* @since 5.0
*/
public class ToggleMarkOccurrencesAction extends TextEditorAction implements IPropertyChangeListener {
private IPreferenceStore fStore;
/**
* Constructs and updates the action.
*/
public ToggleMarkOccurrencesAction() {
super(ConstructedCEditorMessages.getResourceBundle(), "ToggleMarkOccurrencesAction.", null, IAction.AS_CHECK_BOX); //$NON-NLS-1$
CPluginImages.setToolImageDescriptors(this, "mark_occurrences.gif"); //$NON-NLS-1$
PlatformUI.getWorkbench().getHelpSystem().setHelp(this, ICHelpContextIds.TOGGLE_MARK_OCCURRENCES_ACTION);
update();
}
@Override
public void run() {
fStore.setValue(PreferenceConstants.EDITOR_MARK_OCCURRENCES, isChecked());
}
@Override
public void update() {
ITextEditor editor= getTextEditor();
boolean checked= false;
if (editor instanceof CEditor)
checked= ((CEditor)editor).isMarkingOccurrences();
setChecked(checked);
setEnabled(editor != null);
}
@Override
public void setEditor(ITextEditor editor) {
super.setEditor(editor);
if (editor != null) {
if (fStore == null) {
fStore= CUIPlugin.getDefault().getPreferenceStore();
fStore.addPropertyChangeListener(this);
}
} else if (fStore != null) {
fStore.removePropertyChangeListener(this);
fStore= null;
}
update();
}
@Override
public void propertyChange(PropertyChangeEvent event) {
if (event.getProperty().equals(PreferenceConstants.EDITOR_MARK_OCCURRENCES))
setChecked(Boolean.parseBoolean(event.getNewValue().toString()));
}
}