/*
 * Copyright 2010 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.guvnor.tools.actions;

import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IViewActionDelegate;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.PlatformUI;
import org.guvnor.tools.properties.RepositoryElementPropsDialog;
import org.guvnor.tools.views.model.TreeObject;

/**
 * Action for showing properties for a Guvnor repository element.
 */
public class RepositoryElementPropsAction implements IViewActionDelegate {

    private TreeObject node;

    public void init(IViewPart view) { }

    public void run(IAction action) {
        if (node == null) {
            return;
        }

        Shell shell = PlatformUI.getWorkbench().getActiveWorkbenchWindow().
                                    getActivePage().getActivePart().getSite().getShell();
        RepositoryElementPropsDialog diag = new RepositoryElementPropsDialog(shell, node);
        diag.open();
    }

    public void selectionChanged(IAction action, ISelection selection) {
        if (selection instanceof IStructuredSelection) {
            IStructuredSelection sel = (IStructuredSelection)selection;
            if (sel.getFirstElement() instanceof TreeObject) {
                node = (TreeObject)sel.getFirstElement();
            }
        }
    }
}