org.eclipse.ui.internal.handlers.PropertyDialogHandler.java Source code

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Here is the source code for org.eclipse.ui.internal.handlers.PropertyDialogHandler.java

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/*******************************************************************************
 * Copyright (c) 2007 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.ui.internal.handlers;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.jface.preference.PreferenceDialog;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.handlers.HandlerUtil;
import org.eclipse.ui.internal.dialogs.PropertyDialog;

/**
 * @since 3.4
 * 
 */
public class PropertyDialogHandler extends AbstractHandler {

    private String initialPageId = null;

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)
     */
    public Object execute(ExecutionEvent event) throws ExecutionException {
        PreferenceDialog dialog;
        Object element = null;
        ISelection currentSelection = HandlerUtil.getCurrentSelection(event);
        IWorkbenchWindow activeWorkbenchWindow = HandlerUtil.getActiveWorkbenchWindow(event);
        Shell shell;

        if (currentSelection instanceof IStructuredSelection) {
            element = ((IStructuredSelection) currentSelection).getFirstElement();
        } else {
            return null;
        }

        if (activeWorkbenchWindow != null) {
            shell = activeWorkbenchWindow.getShell();
            dialog = PropertyDialog.createDialogOn(shell, initialPageId, element);
            if (dialog != null) {
                dialog.open();
            }
        }
        return null;
    }

}