/*
 * Copyright (c) 2006, 2008 Borland Software Corp.
 * 
 * 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:
 *    Alexander Shatalin (Borland) - initial API and implementation
 */
package org.eclipse.gmf.ecore.edit.parts;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;

import org.eclipse.emf.ecore.EObject;
import org.eclipse.gef.GraphicalEditPart;
import org.eclipse.gef.Request;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.editpolicies.NonResizableEditPolicy;
import org.eclipse.gef.handles.MoveHandle;
import org.eclipse.gmf.ecore.edit.commands.EcoreCreateShortcutDecorationsCommand;
import org.eclipse.gmf.ecore.edit.policies.EPackageCanonicalEditPolicy;
import org.eclipse.gmf.ecore.edit.policies.EPackageItemSemanticEditPolicy;
import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy;
import org.eclipse.gmf.runtime.diagram.ui.editparts.DiagramEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editpolicies.DiagramDragDropEditPolicy;
import org.eclipse.gmf.runtime.diagram.ui.editpolicies.EditPolicyRoles;
import org.eclipse.gmf.runtime.diagram.ui.editpolicies.NonResizableLabelEditPolicy;
import org.eclipse.gmf.runtime.diagram.ui.requests.CreateViewRequest;
import org.eclipse.gmf.runtime.diagram.ui.requests.DropObjectsRequest;
import org.eclipse.gmf.runtime.emf.core.util.EObjectAdapter;
import org.eclipse.gmf.runtime.notation.Node;
import org.eclipse.gmf.runtime.notation.View;

/**
 * @generated
 */
public class EPackageEditPart extends DiagramEditPart {

	/**
	 * @generated
	 */
	public final static String MODEL_ID = "Ecore"; //$NON-NLS-1$

	/**
	 * @generated
	 */
	public static final int VISUAL_ID = 1000;

	/**
	 * @generated
	 */
	public EPackageEditPart(View view) {
		super(view);
	}

	/**
	 * @generated
	 */
	protected void createDefaultEditPolicies() {
		super.createDefaultEditPolicies();
		installEditPolicy(EditPolicyRoles.SEMANTIC_ROLE, new EPackageItemSemanticEditPolicy());
		installEditPolicy(EditPolicyRoles.CANONICAL_ROLE, new EPackageCanonicalEditPolicy());
		installEditPolicy(EditPolicyRoles.DRAG_DROP_ROLE, new DiagramDragDropEditPolicy() {

			public Command getDropObjectsCommand(DropObjectsRequest dropRequest) {
				ArrayList<CreateViewRequest.ViewDescriptor> viewDescriptors = new ArrayList<CreateViewRequest.ViewDescriptor>();
				for (Iterator<?> it = dropRequest.getObjects().iterator(); it.hasNext();) {
					Object nextObject = it.next();
					if (false == nextObject instanceof EObject) {
						continue;
					}
					viewDescriptors.add(new CreateViewRequest.ViewDescriptor(new EObjectAdapter((EObject) nextObject), Node.class, null, getDiagramPreferencesHint()));
				}
				return createShortcutsCommand(dropRequest, viewDescriptors);
			}

			private Command createShortcutsCommand(DropObjectsRequest dropRequest, List<CreateViewRequest.ViewDescriptor> viewDescriptors) {
				Command command = createViewsAndArrangeCommand(dropRequest, viewDescriptors);
				if (command != null) {
					return command.chain(new ICommandProxy(new EcoreCreateShortcutDecorationsCommand(getEditingDomain(), (View) getModel(), viewDescriptors)));
				}
				return null;
			}
		});
		// removeEditPolicy(org.eclipse.gmf.runtime.diagram.ui.editpolicies.EditPolicyRoles.POPUPBAR_ROLE);
	}

	/**
	* @generated
	*/
	/*package-local*/static class NodeLabelDragPolicy extends NonResizableEditPolicy {

		/**
		* @generated
		*/
		@SuppressWarnings("rawtypes")
		protected List createSelectionHandles() {
			MoveHandle h = new MoveHandle((GraphicalEditPart) getHost());
			h.setBorder(null);
			return Collections.singletonList(h);
		}

		/**
		* @generated
		*/
		public Command getCommand(Request request) {
			return null;
		}

		/**
		* @generated
		*/
		public boolean understandsRequest(Request request) {
			return false;
		}
	}

	/**
	* @generated
	*/
	/*package-local*/static class LinkLabelDragPolicy extends NonResizableLabelEditPolicy {

		/**
		* @generated
		*/
		@SuppressWarnings("rawtypes")
		protected List createSelectionHandles() {
			MoveHandle mh = new MoveHandle((GraphicalEditPart) getHost());
			mh.setBorder(null);
			return Collections.singletonList(mh);
		}
	}

}