/*
 * Copyright (c) 2006, 2007 Borland Software Corporation.
 *  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:
 *      Richard Gronback (Borland) - initial API and implementation
 */

package org.eclipse.gmf.examples.mindmap.rcp.part;

import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.emf.common.ui.action.WorkbenchWindowActionDelegate;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.common.util.WrappedException;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.emf.workspace.WorkspaceEditingDomainFactory;
import org.eclipse.gmf.examples.mindmap.rcp.edit.parts.MapEditPart;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.dialogs.IDialogSettings;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.wizard.Wizard;
import org.eclipse.jface.wizard.WizardDialog;
import org.eclipse.osgi.util.NLS;

/**
 * @generated
 */
public class MindmapInitDiagramFileAction extends WorkbenchWindowActionDelegate {
	/**
	 * @generated
	 */
	private URI mySelectedModelFileURI;

	/**
	 * @generated
	 */
	public void selectionChanged(IAction action, ISelection selection) {
		super.selectionChanged(action, selection);
		mySelectedModelFileURI = null;
		if (selection instanceof IStructuredSelection == false
				|| selection.isEmpty()) {
			return;
		}
		Object firstElement = ((IStructuredSelection) selection)
				.getFirstElement();
		if (mySelectedModelFileURI == null && firstElement instanceof URI) {
			mySelectedModelFileURI = (URI) firstElement;
		}
		if (mySelectedModelFileURI == null
				&& firstElement instanceof IAdaptable) {
			mySelectedModelFileURI = (URI) ((IAdaptable) firstElement)
					.getAdapter(URI.class);
		}
		if (mySelectedModelFileURI != null) {
			mySelectedModelFileURI = mySelectedModelFileURI.trimFragment();
		}
		action.setEnabled(true);
	}

	/**
	 * @generated
	 */
	public void run(IAction action) {
		EObject diagramRoot = null;
		TransactionalEditingDomain editingDomain = WorkspaceEditingDomainFactory.INSTANCE
				.createEditingDomain();
		if (mySelectedModelFileURI != null) {
			ResourceSet resourceSet = new ResourceSetImpl();
			try {
				Resource resource = resourceSet.getResource(
						mySelectedModelFileURI, true);
				diagramRoot = (EObject) resource.getContents().get(0);
			} catch (WrappedException ex) {
				MindmapDiagramEditorPlugin
						.getInstance()
						.logError(
								"Unable to load resource: " + mySelectedModelFileURI.toString(), ex); //$NON-NLS-1$
				MessageDialog
						.openError(
								getWindow().getShell(),
								Messages.MindmapInitDiagramFileAction_ResourceErrorDialogTitle,
								Messages.MindmapInitDiagramFileAction_ResourceErrorDialogMessage);
				return;
			}
		}
		Wizard wizard = new MindmapNewDiagramFileWizard(mySelectedModelFileURI,
				diagramRoot, editingDomain);
		IDialogSettings pluginDialogSettings = MindmapDiagramEditorPlugin
				.getInstance().getDialogSettings();
		IDialogSettings initDiagramFileSettings = pluginDialogSettings
				.getSection("InitDiagramFile"); //$NON-NLS-1$
		if (initDiagramFileSettings == null) {
			initDiagramFileSettings = pluginDialogSettings
					.addNewSection("InitDiagramFile"); //$NON-NLS-1$
		}
		wizard.setDialogSettings(initDiagramFileSettings);
		wizard.setForcePreviousAndNextButtons(mySelectedModelFileURI != null);
		wizard.setWindowTitle(NLS.bind(
				Messages.MindmapInitDiagramFileAction_WizardTitle,
				MapEditPart.MODEL_ID));

		WizardDialog dialog = new WizardDialog(getWindow().getShell(), wizard);
		dialog.create();
		dialog.getShell().setSize(Math.max(500, dialog.getShell().getSize().x),
				500);
		dialog.open();
	}
}