/*******************************************************************************
* Copyright (c) 2006-2012
* Software Technology Group, Dresden University of Technology
* DevBoost GmbH, Berlin, Amtsgericht Charlottenburg, HRB 140026
*
* 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:
* Software Technology Group - TU Dresden, Germany;
* DevBoost GmbH - Berlin, Germany
* - initial API and implementation
******************************************************************************/
package org.reuseware.coconut.compositionprogram.diagram.edit.policies;
import java.util.List;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.Request;
import org.eclipse.gef.commands.Command;
import org.eclipse.gmf.runtime.diagram.ui.editpolicies.OpenEditPolicy;
import org.eclipse.gmf.runtime.notation.View;
import org.reuseware.coconut.compositionprogram.FragmentInstance;
import org.reuseware.coconut.compositionprogram.diagram.edit.parts.FragmentInstanceNameEditPart;
import org.reuseware.coconut.compositionprogram.diagram.util.OpenEditorUtil;
import org.reuseware.coconut.fragment.ComposedFragment;
import org.reuseware.coconut.fragment.Fragment;
import org.reuseware.coconut.resource.ReuseResources;
import org.reuseware.coconut.resource.sokan.IndexConstants;
import org.reuseware.sokan.Constraint;
import org.reuseware.sokan.FacetedRequest;
import org.reuseware.sokan.IndexRow;
import org.reuseware.sokan.index.util.FacetUtil;
import org.reuseware.sokan.index.util.IndexUtil;
import org.reuseware.sokan.index.util.ResourceUtil;
/**
* Policy for double-clicking a fragment instance in the UCL editor.
* The policy produces a command that opens the fragment of the clicked
* fragment instance in a new editor using the <code>OpenEditorUtil</code>.
* If the fragment is a composed fragment, the composition program responsible
* for creating the fragment is opened instead. In hierarchical composition
* scenarios, this allows an easy navigation down the hierarchy by double-clicking
* only.
*/
public class FragmentInstanceDoubleClickEditPolicy extends OpenEditPolicy {
/**
* @param request the request (not used)
* @return command that opens a new editor when executed
*/
@Override
protected Command getOpenCommand(Request request) {
return new Command() {
public void execute() {
EditPart host = getHost();
if (host instanceof FragmentInstanceNameEditPart) {
host = host.getParent();
}
EObject element = ((View) host.getModel()).getElement();
if (element instanceof FragmentInstance) {
FragmentInstance fragmentInstance = (FragmentInstance) element;
Fragment fragment = fragmentInstance.getFragment();
if (fragment instanceof ComposedFragment) {
List<Constraint> constraints = FacetUtil.buildConstraints(
IndexConstants.COLUMN_COMPOSED_FRAGMENT,
ResourceUtil.idString(fragmentInstance.getUFI()));
FacetedRequest request = FacetUtil.buildFacetedRequest(constraints);
for (IndexRow row : IndexUtil.INSTANCE.getIndex(request)) {
Fragment cpFragment = ReuseResources.INSTANCE.getFragment(
row.getArtifactID().getSegments(),
fragmentInstance.eResource().getResourceSet());
OpenEditorUtil.openEditor(cpFragment);
}
} else {
OpenEditorUtil.openEditor(fragment);
}
}
}
@Override
public boolean canUndo() {
return false;
}
};
}
}