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/*****************************************************************************
* Copyright (c) 2011 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:
* Camille Letavernier (CEA LIST) camille.letavernier@cea.fr - Initial API and implementation
*****************************************************************************/
package org.eclipse.papyrus.infra.emf.newchild.runtime;
import java.io.IOException;
import java.util.Set;
import org.eclipse.emf.common.util.URI;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.papyrus.infra.emf.newchild.Activator;
import org.eclipse.papyrus.infra.emf.newchild.MenuRoot;
import org.eclipse.papyrus.infra.emf.newchild.NewchildConfiguration;
import org.eclipse.papyrus.infra.emf.newchild.menu.FillElement;
import org.eclipse.papyrus.infra.emf.newchild.menu.FillerFactory;
import org.eclipse.papyrus.infra.emf.utils.EMFHelper;
/**
* A singleton manager for customizable "New child" menu.
*
* The custom menus are defined via {@link NewchildConfiguration}, which
* may be registered either with an extension point, programatically, or
* locally (In the preferences).
*
* Once set up, the manager simply takes a IMenuManager and a ISelection,
* and fills the menu according to the available {@link NewchildConfiguration}.
*
* USAGE : NewchildManager.instance.fillMenu(IMenuManager, IStructuredSelection)
*
* See the org.eclipse.papyrus.infra.emf.newchild.configuration extension point.
*
* @author Camille Letavernier
*
*/
public class NewchildManager {
/**
* The ID of the menu's top element.
*/
public static final String TOP = "top"; //$NON-NLS-1$
/**
* The singleton NewchildManager instance
*/
public static NewchildManager instance = new NewchildManager();
/**
* The default {@link #ConstraintEngine} for this manager
*/
public MenuConstraintEngine constraintEngine;
private NewchildManager() {
}
/**
* Fills the menuManager with a custom menu
*
* The menu will be retrieved via registered {@link NewchildConfiguration}s,
* depending on the given selection.
*
* The menu manager should have an IContributionItem with the {@link #TOP} id ;
* otherwise, the absolute position "top" won't work properly.
*
* @param menuManager
* @param selection
*/
public void fillMenu(IMenuManager menuManager, IStructuredSelection selection) {
constraintEngine = new MenuConstraintEngine();
try {
//TODO : Load that from extension point
NewchildConfiguration configuration = (NewchildConfiguration)EMFHelper.loadEMFModel(null, URI.createPlatformPluginURI("/org.eclipse.papyrus.emf.facet.editor/newChild/NewchildConfiguration.xmi", true));
constraintEngine.addConfiguration(configuration);
} catch (IOException ex) {
Activator.log.error(ex);
}
Set<MenuRoot> roots = findRootsFor(selection);
if(roots.isEmpty()) {
return;
}
for(MenuRoot root : roots) {
Object selectedObject = selection.getFirstElement();
FillElement filler = FillerFactory.instance.getFiller(root, selectedObject);
filler.fill(menuManager);
}
}
private Set<MenuRoot> findRootsFor(IStructuredSelection selection) {
Set<MenuRoot> roots = constraintEngine.getDisplayUnits(selection);
return roots;
}
}
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