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/*
* Copyright (c) 2013 Eike Stepper (Berlin, Germany) 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:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.emf.cdo.releng.projectconfig.presentation.handlers;
import org.eclipse.emf.cdo.releng.preferences.PreferenceNode;
import org.eclipse.emf.cdo.releng.preferences.util.PreferencesUtil;
import org.eclipse.emf.cdo.releng.projectconfig.PreferenceFilter;
import org.eclipse.emf.cdo.releng.projectconfig.PreferenceProfile;
import org.eclipse.emf.cdo.releng.projectconfig.Project;
import org.eclipse.emf.cdo.releng.projectconfig.WorkspaceConfiguration;
import org.eclipse.emf.common.ui.viewer.IViewerProvider;
import org.eclipse.emf.edit.provider.IWrapperItemProvider;
import org.eclipse.emf.edit.provider.ItemProvider;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.expressions.IEvaluationContext;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.ui.ISources;
import java.util.ArrayList;
import java.util.List;
/**
* Our sample handler extends AbstractHandler, an IHandler base class.
* @see org.eclipse.core.commands.IHandler
* @see org.eclipse.core.commands.AbstractHandler
*/
public class NavigateHandler extends AbstractHandler
{
protected IStructuredSelection targetSelection;
protected Viewer viewer;
public NavigateHandler()
{
}
/**
* the command has been executed, so extract extract the needed information
* from the application context.
*/
public Object execute(ExecutionEvent event) throws ExecutionException
{
if (viewer != null)
{
viewer.setSelection(targetSelection, true);
}
return null;
}
@Override
public void setEnabled(Object evaluationContext)
{
IEvaluationContext evaluationContext2 = (IEvaluationContext)evaluationContext;
Object activeEditorPart = evaluationContext2.getVariable(ISources.ACTIVE_EDITOR_NAME);
if (activeEditorPart instanceof IViewerProvider)
{
viewer = ((IViewerProvider)activeEditorPart).getViewer();
}
Object selection = evaluationContext2.getVariable(ISources.ACTIVE_CURRENT_SELECTION_NAME);
if (selection instanceof IStructuredSelection)
{
updateSelection((IStructuredSelection)selection);
}
setBaseEnabled(viewer != null && !targetSelection.isEmpty());
}
public boolean updateSelection(IStructuredSelection selection)
{
List<Object> targets = new ArrayList<Object>();
for (Object object : selection.toArray())
{
if (object instanceof WorkspaceConfiguration)
{
WorkspaceConfiguration workspaceConfiguration = (WorkspaceConfiguration)object;
for (Project project : workspaceConfiguration.getProjects())
{
targets.addAll(project.getPreferenceProfiles());
}
}
else if (object instanceof Project)
{
Project project = (Project)object;
targets.add(project.getPreferenceNode());
}
else if (object instanceof PreferenceProfile)
{
PreferenceProfile preferenceProfile = (PreferenceProfile)object;
targets.addAll(preferenceProfile.getReferentProjects());
}
else if (object instanceof PreferenceFilter)
{
PreferenceFilter preferenceFilter = (PreferenceFilter)object;
PreferenceNode preferenceNode = preferenceFilter.getPreferenceNode();
if (preferenceNode != null)
{
targets.add(preferenceNode);
}
}
else if (object instanceof IWrapperItemProvider)
{
IWrapperItemProvider wrapperItemProvider = (IWrapperItemProvider)object;
targets.add(wrapperItemProvider.getValue());
}
else if (object instanceof ItemProvider)
{
ItemProvider itemProvider = (ItemProvider)object;
for (Object child : itemProvider.getChildren())
{
if (child instanceof IWrapperItemProvider)
{
targets.add(((IWrapperItemProvider)child).getValue());
}
}
}
else if (object instanceof PreferenceNode)
{
PreferenceNode preferenceNode = (PreferenceNode)object;
PreferenceNode ancestor = PreferencesUtil.getAncestor(preferenceNode);
if (ancestor != null)
{
targets.add(ancestor);
}
}
}
targetSelection = new StructuredSelection(targets);
return !targetSelection.isEmpty();
}
}
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