/******************************************************************************* | |
* Copyright (c) 2011, 2012 Ericsson AB 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 | |
* | |
* Description: | |
* | |
* This class implements the navigator view toolbar command set/unset the tree viewer input to | |
* the currently selected element | |
* | |
* Contributors: | |
* Sebastien Dubois - Created for Mylyn Review R4E project | |
* | |
******************************************************************************/ | |
package org.eclipse.mylyn.reviews.r4e.ui.internal.commands.filters; | |
import org.eclipse.core.commands.AbstractHandler; | |
import org.eclipse.core.commands.ExecutionEvent; | |
import org.eclipse.core.commands.ExecutionException; | |
import org.eclipse.core.runtime.IProgressMonitor; | |
import org.eclipse.core.runtime.IStatus; | |
import org.eclipse.core.runtime.Status; | |
import org.eclipse.jface.viewers.IStructuredSelection; | |
import org.eclipse.mylyn.reviews.r4e.ui.R4EUIPlugin; | |
import org.eclipse.mylyn.reviews.r4e.ui.internal.filters.FocusFilter; | |
import org.eclipse.mylyn.reviews.r4e.ui.internal.model.IR4EUIModelElement; | |
import org.eclipse.mylyn.reviews.r4e.ui.internal.model.R4EUIModelController; | |
import org.eclipse.mylyn.reviews.r4e.ui.internal.navigator.ReviewNavigatorActionGroup; | |
import org.eclipse.mylyn.reviews.r4e.ui.internal.navigator.ReviewNavigatorTreeViewer; | |
import org.eclipse.ui.handlers.HandlerUtil; | |
import org.eclipse.ui.progress.UIJob; | |
/** | |
* @author Sebastien Dubois | |
* @version $Revision: 1.0 $ | |
*/ | |
public class GoIntoFilterHandler extends AbstractHandler { | |
// ------------------------------------------------------------------------ | |
// Constants | |
// ------------------------------------------------------------------------ | |
/** | |
* Field COMMAND_MESSAGE. (value is ""Changing focus..."") | |
*/ | |
private static final String COMMAND_MESSAGE = "Changing focus..."; | |
// ------------------------------------------------------------------------ | |
// Methods | |
// ------------------------------------------------------------------------ | |
/** | |
* Method execute. | |
* | |
* @param aEvent | |
* ExecutionEvent | |
* @return Object | |
* @see org.eclipse.core.commands.IHandler#execute(ExecutionEvent) | |
*/ | |
public Object execute(final ExecutionEvent aEvent) { | |
final UIJob job = new UIJob(COMMAND_MESSAGE) { | |
@Override | |
public IStatus runInUIThread(IProgressMonitor monitor) { | |
monitor.beginTask(COMMAND_MESSAGE, 1); | |
//We need to preserve the expansion state and restore it afterwards | |
final ReviewNavigatorTreeViewer viewer = (ReviewNavigatorTreeViewer) R4EUIModelController.getNavigatorView() | |
.getTreeViewer(); | |
//Verify is the viewer is disposed | |
if (!viewer.getControl().isDisposed()) { | |
final Object[] elements = viewer.getVisibleExpandedElements(); | |
final FocusFilter filter = ((ReviewNavigatorActionGroup) R4EUIModelController.getNavigatorView() | |
.getActionSet()).getFocusFilter(); | |
boolean oldValue; | |
try { | |
oldValue = HandlerUtil.toggleCommandState(aEvent.getCommand()); | |
} catch (ExecutionException e) { | |
monitor.done(); | |
return Status.CANCEL_STATUS; | |
} | |
if (!oldValue) { | |
//Set current element as root level for the navigator tree | |
final IStructuredSelection selection = (IStructuredSelection) viewer.getSelection(); | |
if (null != selection) { | |
final IR4EUIModelElement element = (IR4EUIModelElement) selection.getFirstElement(); | |
if (null != element) { | |
R4EUIPlugin.Ftracer.traceInfo("Setting focus on current element"); //$NON-NLS-1$ | |
R4EUIModelController.setCurrentFocusElement(element); | |
viewer.setInput(element.getParent()); | |
viewer.setDefaultInput(element.getParent()); | |
viewer.addFilter(filter); | |
viewer.setExpandedElements(elements); | |
} | |
} | |
} else { | |
//Set Root element as root level for the navigator tree | |
R4EUIPlugin.Ftracer.traceInfo("Removing focus on current element"); //$NON-NLS-1$ | |
viewer.removeFilter(filter); | |
R4EUIModelController.setCurrentFocusElement(R4EUIModelController.getRootElement()); | |
if (R4EUIModelController.getNavigatorView().isDefaultDisplay()) { | |
viewer.setInput(R4EUIModelController.getRootElement()); | |
} else { //Assume TreeTable display | |
viewer.setInput(R4EUIModelController.getActiveReview()); | |
viewer.setDefaultInput(R4EUIModelController.getRootElement()); | |
} | |
if (0 < elements.length) { | |
for (Object element : elements) { | |
viewer.expandToLevel((element), 1); | |
} | |
} | |
} | |
} | |
monitor.worked(1); | |
monitor.done(); | |
return Status.OK_STATUS; | |
} | |
}; | |
job.setUser(true); | |
job.schedule(); | |
return null; | |
} | |
} |