bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/internal/OpenPreferencesAction.java

/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.ui.internal;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.preference.PreferenceDialog;
import org.eclipse.jface.preference.PreferenceManager;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.actions.ActionFactory;
import org.eclipse.ui.help.WorkbenchHelp;
import org.eclipse.ui.internal.dialogs.WorkbenchPreferenceDialog;

/**
 * Open the preferences dialog
 */
public class OpenPreferencesAction
	extends Action 
	implements ActionFactory.IWorkbenchAction {
			
/**
 * The workbench window; or <code>null</code> if this
 * action has been <code>dispose</code>d.
 */
private IWorkbenchWindow workbenchWindow;
	

/**
 * Create a new <code>OpenPreferenceAction</code>
 * This default constructor allows the the action to be called from the welcome page.
 */
public OpenPreferencesAction() {
	this(PlatformUI.getWorkbench().getActiveWorkbenchWindow());
}
/**
 * Create a new <code>OpenPreferenceAction</code> and initialize it 
 * from the given resource bundle.
 */
public OpenPreferencesAction(IWorkbenchWindow window) {
	super(WorkbenchMessages.getString("OpenPreferences.text")); //$NON-NLS-1$
	if (window == null) {
		throw new IllegalArgumentException();
	}
	this.workbenchWindow = window;
	setActionDefinitionId("org.eclipse.ui.window.preferences"); //$NON-NLS-1$
	// @issue action id not set
	setToolTipText(WorkbenchMessages.getString("OpenPreferences.toolTip")); //$NON-NLS-1$
	WorkbenchHelp.setHelp(this, IHelpContextIds.OPEN_PREFERENCES_ACTION);
}
/* (non-Javadoc)
 * Method declared on Action.
 */
public void run() {
	if (workbenchWindow == null) {
		// action has been dispose
		return;
	}
	PreferenceManager pm = WorkbenchPlugin.getDefault().getPreferenceManager();
	
	if (pm != null) {
		PreferenceDialog d = new WorkbenchPreferenceDialog(workbenchWindow.getShell(), pm);
		d.create();
		WorkbenchHelp.setHelp(d.getShell(), IHelpContextIds.PREFERENCE_DIALOG);
		d.open();	
	}
}

/* (non-Javadoc)
 * Method declared on ActionFactory.IWorkbenchAction.
 */
public void dispose() {
	workbenchWindow = null;
}

}