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/*******************************************************************************
* Copyright (c) 2014 Red Hat, Inc.
* 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:
* Red Hat - initial API and implementation
*******************************************************************************/
package org.eclipse.linuxtools.internal.systemtap.ui.ide.actions;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.linuxtools.internal.systemtap.ui.ide.views.BrowserView;
import org.eclipse.ui.ISelectionListener;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchWindow;
public abstract class BrowserViewAction extends Action implements ISelectionListener, IDoubleClickListener {
private final IWorkbenchWindow window;
private final BrowserView viewer;
private IStructuredSelection selection;
private TreeExpandCollapseAction expandAction;
/**
* The Default Constructor. Takes the <code>IWorkbenchWindow</code> that it effects
* as well as the <code>BrowserView</code> that will fire this action.
* @param window window effected by this event
* @param browser browser that fires this action
*/
public BrowserViewAction(IWorkbenchWindow window, BrowserView browser) {
this.window = window;
window.getSelectionService().addSelectionListener(this);
viewer = browser;
expandAction = new TreeExpandCollapseAction(viewer);
}
public void dispose() {
window.getSelectionService().removeSelectionListener(this);
selection = null;
expandAction.dispose();
expandAction = null;
}
/**
* Updates <code>selection</code> with the current selection whenever the user changes
* the current selection.
*/
@Override
public void selectionChanged(IWorkbenchPart part, ISelection incoming) {
if (incoming instanceof IStructuredSelection) {
selection = (IStructuredSelection) incoming;
setEnabled(selection.size() == 1);
} else {
// Other selections, for example containing text or of other kinds.
setEnabled(false);
}
}
@Override
public void doubleClick(DoubleClickEvent event) {
run();
}
protected Object getSelectedElement() {
return ((IStructuredSelection) viewer.getViewer().getSelection()).getFirstElement();
}
protected void runExpandAction() {
expandAction.run();
}
}
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