/*
 * Copyright (c) 2010, 2012 Eike Stepper (Berlin, Germany) 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:
 *     Martin Fluegge - initial API and implementation
 *
 */
package org.eclipse.emf.cdo.dawn.examples.acore.diagram.part;

import org.eclipse.emf.cdo.dawn.examples.acore.diagram.edit.parts.ACoreRootEditPart;

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.transaction.TransactionalEditingDomain;

import org.eclipse.core.resources.IFile;
import org.eclipse.gmf.runtime.emf.core.GMFEditingDomainFactory;
import org.eclipse.jface.action.IAction;
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.osgi.util.NLS;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IObjectActionDelegate;
import org.eclipse.ui.IWorkbenchPart;

/**
 * @generated
 */
public class AcoreInitDiagramFileAction implements IObjectActionDelegate
{

  /**
   * @generated
   */
  private IWorkbenchPart targetPart;

  /**
   * @generated
   */
  private URI domainModelURI;

  /**
   * @generated
   */
  public void setActivePart(IAction action, IWorkbenchPart targetPart)
  {
    this.targetPart = targetPart;
  }

  /**
   * @generated
   */
  public void selectionChanged(IAction action, ISelection selection)
  {
    domainModelURI = null;
    action.setEnabled(false);
    if (selection instanceof IStructuredSelection == false || selection.isEmpty())
    {
      return;
    }
    IFile file = (IFile)((IStructuredSelection)selection).getFirstElement();
    domainModelURI = URI.createPlatformResourceURI(file.getFullPath().toString(), true);
    action.setEnabled(true);
  }

  /**
   * @generated
   */
  private Shell getShell()
  {
    return targetPart.getSite().getShell();
  }

  /**
   * @generated
   */
  public void run(IAction action)
  {
    TransactionalEditingDomain editingDomain = GMFEditingDomainFactory.INSTANCE.createEditingDomain();
    ResourceSet resourceSet = editingDomain.getResourceSet();
    EObject diagramRoot = null;
    try
    {
      Resource resource = resourceSet.getResource(domainModelURI, true);
      diagramRoot = resource.getContents().get(0);
    }
    catch (WrappedException ex)
    {
      AcoreDiagramEditorPlugin.getInstance().logError("Unable to load resource: " + domainModelURI, ex); //$NON-NLS-1$
    }
    if (diagramRoot == null)
    {
      MessageDialog.openError(getShell(), Messages.InitDiagramFile_ResourceErrorDialogTitle,
          Messages.InitDiagramFile_ResourceErrorDialogMessage);
      return;
    }
    Wizard wizard = new AcoreNewDiagramFileWizard(domainModelURI, diagramRoot, editingDomain);
    wizard.setWindowTitle(NLS.bind(Messages.InitDiagramFile_WizardTitle, ACoreRootEditPart.MODEL_ID));
    AcoreDiagramEditorUtil.runWizard(getShell(), wizard, "InitDiagramFile"); //$NON-NLS-1$
  }
}