/*******************************************************************************
* Copyright (c) 2000, 2005 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.codemap.mapview;
import static org.codemap.util.ID.PACKAGE_EXPLORER;
import java.util.HashSet;
import java.util.Set;
import org.codemap.mapview.action.ForceSelectionAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.part.ISetSelectionTarget;
/**
* Copied from "org.eclipse.ui.internal.part" package.
*
*/
public class MapSelectionProvider implements ISelectionProvider {
private Set<ISelectionChangedListener> listeners = new HashSet<ISelectionChangedListener>();
private ISelection selection = StructuredSelection.EMPTY;
private MapView view;
private boolean forceToPackageExplorer = ForceSelectionAction.DEFAULT_CHECKED;
public MapSelectionProvider(MapView mapView) {
this.view = mapView;
view.getSite().setSelectionProvider(this);
}
@Override
public void addSelectionChangedListener(ISelectionChangedListener listener) {
listeners.add(listener);
}
@Override
public ISelection getSelection() {
return selection;
}
@Override
public void removeSelectionChangedListener(ISelectionChangedListener listener) {
listeners.remove(listener);
}
@Override
public void setSelection(final ISelection sel) {
this.selection = sel;
forcePackageExplorerSelection(selection);
provideSelection(selection);
}
private void provideSelection(final ISelection newSelection) {
final SelectionChangedEvent e = new SelectionChangedEvent(this, newSelection);
for (final ISelectionChangedListener each: listeners) {
Display.getDefault().asyncExec(new Runnable() {
@Override
public void run() {
each.selectionChanged(e);
}
});
}
}
private void forcePackageExplorerSelection(final ISelection newSelection) {
if (!forceToPackageExplorer) return;
if (newSelection == null) return;
Display.getDefault().asyncExec(new Runnable() {
@Override
public void run() {
IViewPart packageExplorer = view.getSite().getPage().findView(PACKAGE_EXPLORER.id);
if (packageExplorer == null) return;
((ISetSelectionTarget) packageExplorer).selectReveal(newSelection);
}
});
}
public void setForceEnabled(boolean checked) {
forceToPackageExplorer = checked;
}
}