ScenarioTemplateTransferDropTargetListener.java

/*
 * Copyright 2005-7 Pi4 Technologies Ltd
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 *
 * Change History:
 * Feb 16, 2007 : Initial version created by gary
 */
package org.savara.tools.scenario.designer.dnd;

import org.eclipse.gef.EditPartViewer;
import org.eclipse.gef.dnd.TemplateTransferDropTargetListener;
import org.eclipse.gef.requests.CreationFactory;
import org.eclipse.swt.dnd.DropTargetEvent;
import org.savara.tools.scenario.designer.model.ModelCreationFactory;

/**
 * This class implements the template transfer drop target listener
 * for the scenario.
 */
public class ScenarioTemplateTransferDropTargetListener
			extends TemplateTransferDropTargetListener {

    /**
     * Creates a new ScenarioTemplateTransferDropTargetListener instance.
     * @param viewer
     */
    public ScenarioTemplateTransferDropTargetListener(EditPartViewer viewer) {
        super(viewer);
    }
    
    public void drop(DropTargetEvent event) {   
    	// Deselect, to avoid refresh problems in ScenarioEditorPage
    	getViewer().deselectAll();
    	
    	super.drop(event);
    }

    /* (non-Javadoc)
     * @see org.eclipse.gef.dnd.TemplateTransferDropTargetListener#getFactory(java.lang.Object)
     */
    protected CreationFactory getFactory(Object template) {
    	CreationFactory ret=null;
    	
    	if (template instanceof Class) {
    		ret = new ModelCreationFactory((Class<?>)template);
    	} else {
    		ret = new ModelCreationFactory(template.getClass());
    	}
    
        return(ret);
    }
}