org.eclipse.bpel.ui.actions.editpart.CreateProcessEventHandlerAction.java Source code

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Here is the source code for org.eclipse.bpel.ui.actions.editpart.CreateProcessEventHandlerAction.java

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/*******************************************************************************
 * Copyright (c) 2005 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 API and implementation
 *******************************************************************************/
package org.eclipse.bpel.ui.actions.editpart;

import org.eclipse.bpel.model.BPELFactory;
import org.eclipse.bpel.model.BPELPackage;
import org.eclipse.bpel.model.EventHandler;
import org.eclipse.bpel.model.OnEvent;
import org.eclipse.bpel.model.Process;
import org.eclipse.bpel.ui.BPELUIPlugin;
import org.eclipse.bpel.ui.IBPELUIConstants;
import org.eclipse.bpel.ui.Messages;
import org.eclipse.bpel.ui.commands.CompoundCommand;
import org.eclipse.bpel.ui.commands.InsertInContainerCommand;
import org.eclipse.bpel.ui.commands.SetNameAndDirectEditCommand;
import org.eclipse.bpel.ui.editparts.StartNodeEditPart;
import org.eclipse.bpel.ui.factories.UIObjectFactoryProvider;
import org.eclipse.bpel.ui.uiextensionmodel.StartNode;
import org.eclipse.bpel.ui.util.BPELUtil;
import org.eclipse.bpel.ui.util.ModelHelper;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.EditPartViewer;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.graphics.Image;

public class CreateProcessEventHandlerAction implements IEditPartAction {
    protected final Object modelObject;
    protected final EditPart editPart;
    protected final EditPartViewer viewer;

    public CreateProcessEventHandlerAction(EditPart editPart) {
        StartNode startNode = ((StartNodeEditPart) editPart).getStartNode();
        Process process = startNode.getProcess();
        this.modelObject = process;
        this.editPart = editPart;
        this.viewer = editPart.getViewer();
    }

    public ImageDescriptor getIcon() {
        return BPELUIPlugin.INSTANCE.getImageDescriptor(IBPELUIConstants.ICON_ACTION_EVENTHANDLER);
    }

    public Image getIconImg() {
        return BPELUIPlugin.INSTANCE.getImage(IBPELUIConstants.ICON_ACTION_EVENTHANDLER);
    }

    public boolean onButtonPressed() {
        CompoundCommand command = new CompoundCommand(IBPELUIConstants.CMD_ADD_EVENTHANDLER);
        final EventHandler eventHandler = BPELFactory.eINSTANCE.createEventHandler();
        // Create an empty OnEvent inside it.
        final OnEvent onEvent = (OnEvent) UIObjectFactoryProvider.getInstance()
                .getFactoryFor(BPELPackage.eINSTANCE.getOnEvent()).createInstance();
        eventHandler.getEvents().add(onEvent);
        command.add(new InsertInContainerCommand((EObject) modelObject, eventHandler, null));
        command.add(new SetNameAndDirectEditCommand(onEvent, viewer));
        ModelHelper.getBPELEditor(modelObject).getCommandStack().execute(command);
        BPELUtil.setShowEventHandler(editPart, true);
        return true;
    }

    public String getToolTip() {
        return Messages.CreateEventHandlerAction_Add_Event_Handler_1;
    }

    // default implementations for uncommonly-used methods
    public void onMouseEnter(Point location) {
    }

    public void onMouseExit(Point location) {
    }

    public void onDispose() {
    }

    public void onCreate() {
    }

    public ImageDescriptor getDisabledIcon() {
        return ImageDescriptor.getMissingImageDescriptor();
    }

    public boolean isEnabled() {
        return true;
    }
}