//------------------------------------------------------------------------------
// Copyright (c) 2005, 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 implementation
//------------------------------------------------------------------------------
/*
 * Copyright (c) 2005, 2006 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 implementation
 *
 */
package org.eclipse.epf.diagramming.part;

import java.util.Iterator;
import java.util.List;

import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.draw2d.DelegatingLayout;
import org.eclipse.draw2d.FreeformLayer;
import org.eclipse.draw2d.LayeredPane;
import org.eclipse.emf.ecore.EModelElement;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.epf.diagram.core.bridge.BridgeHelper;
import org.eclipse.epf.diagram.core.bridge.DiagramAdapter;
import org.eclipse.epf.diagram.core.bridge.NodeAdapter;
import org.eclipse.epf.diagram.core.part.DiagramEditorInput;
import org.eclipse.epf.diagram.core.part.DiagramFileEditorInputProxy;
import org.eclipse.epf.diagram.core.part.util.DiagramEditorUtil;
import org.eclipse.epf.diagram.core.services.DiagramHelper;
import org.eclipse.epf.diagramming.edit.parts.UMLEditPartFactory;
import org.eclipse.epf.library.edit.util.IDiagramManager;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.LayerConstants;
import org.eclipse.gmf.runtime.diagram.core.preferences.PreferencesHint;
import org.eclipse.gmf.runtime.diagram.ui.editparts.DiagramEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editparts.DiagramRootEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editparts.ShapeNodeEditPart;
import org.eclipse.gmf.runtime.notation.Diagram;
import org.eclipse.gmf.runtime.notation.Node;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IWorkbenchPart;

/**
 * @modified
 */
public class DiagramEditor extends org.eclipse.epf.diagram.core.part.AbstractDiagramEditor {
	/**
	 * @generated
	 */
	public static final String ID = "org.eclipse.epf.diagramming.part.DiagramEditorID"; //$NON-NLS-1$


	/**
	 * @generated
	 */
	protected void configureGraphicalViewer() {
		super.configureGraphicalViewer();
		DiagramRootEditPart root = (DiagramRootEditPart) getDiagramGraphicalViewer()
				.getRootEditPart();
		LayeredPane printableLayers = (LayeredPane) root
				.getLayer(LayerConstants.PRINTABLE_LAYERS);
		FreeformLayer extLabelsLayer = new FreeformLayer();
		extLabelsLayer.setLayoutManager(new DelegatingLayout());
		printableLayers.addLayerAfter(extLabelsLayer,
				UMLEditPartFactory.EXTERNAL_NODE_LABELS_LAYER,
				LayerConstants.PRIMARY_LAYER);
		LayeredPane scalableLayers = (LayeredPane) root
				.getLayer(LayerConstants.SCALABLE_LAYERS);
		FreeformLayer scaledFeedbackLayer = new FreeformLayer();
		scaledFeedbackLayer.setEnabled(false);
		scalableLayers.addLayerAfter(scaledFeedbackLayer,
				LayerConstants.SCALED_FEEDBACK_LAYER,
				DiagramRootEditPart.DECORATION_UNPRINTABLE_LAYER);
	}

	@Override
	protected PreferencesHint getPreferencesHint() {
		return new PreferencesHint(EPFDiagramEditorPlugin.ID);
	}

	
	/**
	 * @param event
	 */
	protected void handleDoubleClick(Event event) {
		List editParts = getGraphicalViewer().getSelectedEditParts();

		// do nothing if 0 or more than 1 edit parts are selected
		//
		if (editParts.size() != 1)
			return;

		EditPart editPart = (EditPart) editParts.get(0);
		Node node = (Node)editPart.getModel();
		EObject model = node.getElement();
		DiagramFileEditorInputProxy editorInput = (DiagramFileEditorInputProxy)getEditorInput();
		DiagramEditorInput dInput = editorInput.getDiagramEditorInput();

		if(model instanceof org.eclipse.uml2.uml.Activity){
			NodeAdapter nodeAdapter = BridgeHelper.getNodeAdapter(model);
			Object e = null;
			// TODO: handle Wrapper change below line after wrapper implement
				e = nodeAdapter.getElement();
			if(e == null){
				e = BridgeHelper.getMethodElement((EModelElement)model);
			}
			if(e != null){
				IEditorPart parent = getSite().getPage().getActiveEditor();
				DiagramEditorInput input = new org.eclipse.epf.diagram.core.part.DiagramEditorInput(
						e, dInput.getSuppression(), IDiagramManager.ACTIVITY_DIAGRAM);
				DiagramEditorUtil.openDiagramEditor(getSite().getPage(), input, 
						EPFDiagramEditorPlugin.DIAGRAM_PREFERENCES_HINT, new NullProgressMonitor());					

			}
		}

	}
	@Override
	protected void initializeGraphicalViewer() {
		super.initializeGraphicalViewer();
		// Code for disabling the readonly element in the diagram.
//		DiagramEditPart diagramPart = getDiagramEditPart();
//		List children = diagramPart.getChildren();
//		if(!children.isEmpty()){
//			for (Iterator iter = children.iterator(); iter.hasNext();) {
//				EditPart part = (EditPart) iter.next();
//				if(part instanceof GraphicalEditPart){
//					Node node = (Node)part.getModel();
//					if(BridgeHelper.isInherited(node)){
//						((GraphicalEditPart)part).disableEditMode();
//					}
//				}
//			}
//		}
	}
	
}