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/*******************************************************************************
* Copyright (c) 2000, 2007 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.eclipse.debug.internal.ui.actions.breakpoints;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IAdapterManager;
import org.eclipse.core.runtime.Platform;
import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.ui.actions.IToggleBreakpointsTarget;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.widgets.Event;
import org.eclipse.ui.IActionDelegate2;
import org.eclipse.ui.IObjectActionDelegate;
import org.eclipse.ui.IWorkbenchPart;
/**
* A toggle breakpoint action that can be contributed to an object. The action
* will perform a toggle breakpoint operation for a selected object.
*
* <p>Clients may subclass this class.</p>
*
* @since 3.0
*/
public abstract class ToggleBreakpointObjectActionDelegate implements IObjectActionDelegate, IActionDelegate2 {
private IWorkbenchPart fPart;
private IStructuredSelection fSelection;
/* (non-Javadoc)
* @see org.eclipse.ui.IObjectActionDelegate#setActivePart(org.eclipse.jface.action.IAction, org.eclipse.ui.IWorkbenchPart)
*/
public void setActivePart(IAction action, IWorkbenchPart targetPart) {
fPart = targetPart;
}
/* (non-Javadoc)
* @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)
*/
public void run(IAction action) {
IAdaptable adaptable = (IAdaptable) fSelection.getFirstElement();
IToggleBreakpointsTarget target = (IToggleBreakpointsTarget) adaptable.getAdapter(IToggleBreakpointsTarget.class);
if (target == null) {
IAdapterManager adapterManager = Platform.getAdapterManager();
target = (IToggleBreakpointsTarget) adapterManager.loadAdapter(adaptable, IToggleBreakpointsTarget.class.getName());
}
if (target != null) {
try {
performAction(target, fPart, fSelection);
} catch (CoreException e) {
DebugPlugin.log(e);
}
}
}
/**
* Performs the operation specific to this action.
*
* @param target adapter to toggle breakpoints
* @param part the active part
* @param selection the seleciton in the active part
* @exception CoreException if an exception occurrs
*/
protected abstract void performAction(IToggleBreakpointsTarget target, IWorkbenchPart part, ISelection selection) throws CoreException;
/* (non-Javadoc)
* @see org.eclipse.ui.IActionDelegate#selectionChanged(org.eclipse.jface.action.IAction, org.eclipse.jface.viewers.ISelection)
*/
public void selectionChanged(IAction action, ISelection selection) {
boolean enabled = false;
if (selection instanceof IStructuredSelection) {
IStructuredSelection ss = (IStructuredSelection) selection;
this.fSelection = ss;
if (!ss.isEmpty()) {
Object object = ss.getFirstElement();
if (object instanceof IAdaptable) {
IAdaptable adaptable = (IAdaptable) object;
IToggleBreakpointsTarget target = (IToggleBreakpointsTarget) adaptable.getAdapter(IToggleBreakpointsTarget.class);
if (target == null) {
IAdapterManager adapterManager = Platform.getAdapterManager();
enabled = adapterManager.hasAdapter(adaptable, IToggleBreakpointsTarget.class.getName());
} else {
enabled = true;
}
}
}
}
action.setEnabled(enabled);
}
/* (non-Javadoc)
* @see org.eclipse.ui.IActionDelegate2#init(org.eclipse.jface.action.IAction)
*/
public void init(IAction action) {
}
/* (non-Javadoc)
* @see org.eclipse.ui.IActionDelegate2#dispose()
*/
public void dispose() {
fSelection = null;
fPart = null;
}
/* (non-Javadoc)
* @see org.eclipse.ui.IActionDelegate2#runWithEvent(org.eclipse.jface.action.IAction, org.eclipse.swt.widgets.Event)
*/
public void runWithEvent(IAction action, Event event) {
run(action);
}
}
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