/*******************************************************************************
 * Copyright (c) 2009 Zoltan Ujhelyi and Daniel Varro.
 * 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:
 *    Zoltan Ujhelyi - initial API and implementation
 *******************************************************************************/
package org.eclipse.viatra2.visualisation.modelspace.actions;

import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.PlatformUI;
import org.eclipse.viatra2.core.IModelManager;
import org.eclipse.viatra2.core.IModelSpace;
import org.eclipse.viatra2.framework.IFramework;
import org.eclipse.viatra2.frameworkgui.actions.AbstractFrameworkGUIAction;
import org.eclipse.viatra2.frameworkgui.content.FrameworkContainer;
import org.eclipse.viatra2.frameworkgui.views.FrameworkTreeView;
import org.eclipse.viatra2.logger.Logger;
import org.eclipse.viatra2.visualisation.IVisualisationDescriptor;
import org.eclipse.viatra2.visualisation.modelspace.ModelSpaceVisualisationDescriptor;
import org.eclipse.viatra2.visualisation.view.ViatraVisualisationView;

/**
 * @author Zoltan Ujhelyi
 */
public class VisualiseModelSpaceAction extends AbstractFrameworkGUIAction {
	
	ModelSpaceVisualisationDescriptor descriptor;

	/**
	 * Initializes the model space visualisation action
	 */
	public VisualiseModelSpaceAction() {
		super();
		setText("Visualise Model Space");
		setToolTipText("Graph Visualisation for the Model Space");
		setImageDescriptor(PlatformUI.getWorkbench().getSharedImages()
				.getImageDescriptor(ISharedImages.IMG_OBJ_ELEMENT));
	}

	/**
	 * Initializes the model space visualisation action
	 * @param part
	 */
	public VisualiseModelSpaceAction(FrameworkTreeView part) {
		this();
		setupInternals(part);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.viatra2.frameworkgui.actions.AbstractFrameworkGUIAction#isEnabled
	 * ()
	 */
	@Override
	public boolean isEnabled() {
		return true;
	}
	

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.action.Action#run()
	 */
	@Override
	public void run() {
		refreshSelection();
		Object c = getFirstSelected();
		Logger log = iViatraFramework.getLogger();
		if (c instanceof FrameworkContainer) {
			IFramework framework = ((FrameworkContainer) c).getFramework();
			IModelSpace modelSpace = (framework.getTopmodel());
			IModelManager manager = modelSpace.getModelManager();
			if (manager == null) {
				log
						.error("***The machine is not connected to a Model Space***");
				return;
			}
			// open view
			ViatraVisualisationView view = ViatraVisualisationView.openView();
			IVisualisationDescriptor newDescriptor = view.getDescriptor(framework);
			if (newDescriptor == null || !(newDescriptor instanceof ModelSpaceVisualisationDescriptor)) {
				descriptor = new ModelSpaceVisualisationDescriptor();
				view.setDescriptor(framework, descriptor);
			} else {
				descriptor = (ModelSpaceVisualisationDescriptor) newDescriptor;
				IModelManager oldManager = descriptor.getModelManager();
				if (oldManager != null && !manager.equals(oldManager)) {
					if (!MessageDialog.openConfirm(PlatformUI.getWorkbench().getDisplay()
							.getActiveShell(), "Graph overwrite", "Another model space is already visualised. Do you want to overwrite it?")) {
						return;
					}
				}
			}
			
			descriptor.setFramework(framework);
			descriptor.includeItem(manager.getRoot());
			descriptor.setModelManager(manager);
		}
	}

}