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/*******************************************************************************
* Copyright (c) 2006 - 2007 CEA LIST.
* 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:
* CEA LIST - initial API and implementation
*******************************************************************************/
package org.eclipse.papyrus.views.cpp;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.papyrus.infra.emf.utils.EMFHelper;
import org.eclipse.papyrus.views.panels.CppAbstractPanel;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.uml2.uml.Element;
/**
* This class extends <code>ViewPart</code>. This class draws the Accord/Cpp
* panel in the Modeling Perspective. It also implements <code>ISelectionListener</code> in order to know which element is selected
* in the workbench. In fact, the content of the view changes depending on the
* type of the element selected
*/
public class CppPanelView extends AbstractCppPanelView {
/**
* Creates the new panel, when switching UI.
* <p>
* This class should be overloaded when working with RSA or other tools, using a new PanelFactory
*
* @param parent
* the parent of the new panel
* @param style
* the SWT style of this panel
* @param element
* the element for which the panel is created
* @return the newly created panel
*/
@Override
protected CppAbstractPanel createPanel(Composite parent, int style,
Element element) {
return org.eclipse.papyrus.views.panels.PanelFactory.eINSTANCE
.createPanel(parent, 0, currentTarget);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.ui.ISelectionListener#selectionChanged(org.eclipse.ui.IWorkbenchPart,
* org.eclipse.jface.viewers.ISelection)
*/
public void selectionChanged(IWorkbenchPart part, ISelection selection) {
IStructuredSelection sSelection = null;
if(selection instanceof IStructuredSelection) {
sSelection = (IStructuredSelection)selection;
}
// exclude case of an empty selection which is not a Tree selection, since changing views provokes an
// empty selection (selection gets lost, although same element remains selected)
if((selection != null) && (sSelection != null) && sSelection.isEmpty()) {
return;
}
// No available selection: switch to default panel
if((sSelection == null) || (sSelection.size() != 1)) {
currentTarget = null;
switchUI();
return;
}
// Retrieve selected object
EObject currentObject = EMFHelper.getEObject(sSelection.getFirstElement());
if(currentObject instanceof Element) {
if(currentTarget != currentObject) {
currentTarget = (Element)currentObject;
switchUI();
}
}
}
}
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