DeleteElementAction.java

/*
 * Copyright (c) 2010, 2012, 2015 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.gef.EditPart;
import org.eclipse.gef.Request;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.commands.UnexecutableCommand;
import org.eclipse.gmf.runtime.diagram.ui.actions.AbstractDeleteFromAction;
import org.eclipse.gmf.runtime.diagram.ui.actions.ActionIds;
import org.eclipse.gmf.runtime.diagram.ui.commands.CommandProxy;
import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy;
import org.eclipse.gmf.runtime.diagram.ui.l10n.DiagramUIMessages;
import org.eclipse.gmf.runtime.emf.commands.core.command.CompositeTransactionalCommand;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.PlatformUI;

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

/**
 * @generated
 */
public class DeleteElementAction extends AbstractDeleteFromAction
{

  /**
   * @generated
   */
  public DeleteElementAction(IWorkbenchPart part)
  {
    super(part);
  }

  /**
   * @generated
   */
  public DeleteElementAction(IWorkbenchPage workbenchPage)
  {
    super(workbenchPage);
  }

  /**
   * @generated
   */
  @Override
  public void init()
  {
    super.init();
    setId(ActionIds.ACTION_DELETE_FROM_MODEL);
    setText(DiagramUIMessages.DiagramEditor_Delete_from_Model);
    setToolTipText(DiagramUIMessages.DiagramEditor_Delete_from_ModelToolTip);
    ISharedImages workbenchImages = PlatformUI.getWorkbench().getSharedImages();
    setHoverImageDescriptor(workbenchImages.getImageDescriptor(ISharedImages.IMG_TOOL_DELETE));
    setImageDescriptor(workbenchImages.getImageDescriptor(ISharedImages.IMG_TOOL_DELETE));
    setDisabledImageDescriptor(workbenchImages.getImageDescriptor(ISharedImages.IMG_TOOL_DELETE_DISABLED));
  }

  /**
   * @generated
   */
  @Override
  protected String getCommandLabel()
  {
    return DiagramUIMessages.DiagramEditor_Delete_from_Model;
  }

  /**
   * @generated
   */
  @Override
  protected Command getCommand(Request request)
  {
    List operationSet = getOperationSet();
    if (operationSet.isEmpty())
    {
      return UnexecutableCommand.INSTANCE;
    }
    Iterator editParts = operationSet.iterator();
    CompositeTransactionalCommand command = new CompositeTransactionalCommand(getEditingDomain(), getCommandLabel());
    while (editParts.hasNext())
    {
      EditPart editPart = (EditPart)editParts.next();
      Command curCommand = editPart.getCommand(request);
      if (curCommand != null)
      {
        command.compose(new CommandProxy(curCommand));
      }
    }
    if (command.isEmpty() || command.size() != operationSet.size())
    {
      return UnexecutableCommand.INSTANCE;
    }
    return new ICommandProxy(command);
  }
}