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/*******************************************************************************
* Copyright (c) 2000, 2013 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 java.util.Iterator;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.debug.core.model.IWatchpoint;
import org.eclipse.debug.internal.ui.DebugUIPlugin;
import org.eclipse.debug.internal.ui.actions.ActionMessages;
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;
/**
* Action that modifies a watchpoint's access/modification attributes
*/
public abstract class ModifyWatchpointAction implements IObjectActionDelegate, IActionDelegate2 {
private IStructuredSelection fWatchpoints = null;
/* (non-Javadoc)
* @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)
*/
@Override
public void run(IAction action) {
try {
if (fWatchpoints != null) {
Iterator<?> iterator = fWatchpoints.iterator();
while (iterator.hasNext()) {
IWatchpoint watchpoint = (IWatchpoint)iterator.next();
toggleWatchpoint(watchpoint, action.isChecked());
}
}
} catch (CoreException e) {
DebugUIPlugin.errorDialog(DebugUIPlugin.getShell(), ActionMessages.ModifyWatchpointAction_0, ActionMessages.ModifyWatchpointAction_1, e.getStatus()); //
}
}
/**
* Toggles the watch point attribute to the given value.
*
* @param watchpoint the watchpoint to toggle
* @param b on or off
* @throws CoreException if an exception occurs
*/
protected abstract void toggleWatchpoint(IWatchpoint watchpoint, boolean b) throws CoreException;
/* (non-Javadoc)
* @see org.eclipse.ui.IObjectActionDelegate#setActivePart(org.eclipse.jface.action.IAction, org.eclipse.ui.IWorkbenchPart)
*/
@Override
public void setActivePart(IAction action, IWorkbenchPart targetPart) {
}
/* (non-Javadoc)
* @see org.eclipse.ui.IActionDelegate#selectionChanged(org.eclipse.jface.action.IAction, org.eclipse.jface.viewers.ISelection)
*/
@Override
public void selectionChanged(IAction action, ISelection selection) {
if (selection instanceof IStructuredSelection) {
fWatchpoints = (IStructuredSelection) selection;
if (!selection.isEmpty()) {
Iterator<?> iterator = fWatchpoints.iterator();
while (iterator.hasNext()) {
Object next = iterator.next();
if (next instanceof IWatchpoint) {
IWatchpoint watchpoint = (IWatchpoint) next;
action.setChecked(isChecked(watchpoint));
if (!isEnabled(watchpoint)) {
action.setEnabled(false);
return;
}
}
}
action.setEnabled(true);
return;
}
}
action.setEnabled(false);
}
/**
* Returns whether the action should be checke for the current selection
*
* @param watchpoint selected watchpoint
* @return whether the action should be checked for the current selection
*/
protected abstract boolean isChecked(IWatchpoint watchpoint);
/**
* Returns whether this action is enabled for the given watchpoint.
*
* @param watchpoint the watchpoint to examine
* @return whether this action is enabled for the given watchpoint
*/
protected abstract boolean isEnabled(IWatchpoint watchpoint);
/* (non-Javadoc)
* @see org.eclipse.ui.IActionDelegate2#init(org.eclipse.jface.action.IAction)
*/
@Override
public void init(IAction action) {
}
/* (non-Javadoc)
* @see org.eclipse.ui.IActionDelegate2#dispose()
*/
@Override
public void dispose() {
fWatchpoints = null;
}
/* (non-Javadoc)
* @see org.eclipse.ui.IActionDelegate2#runWithEvent(org.eclipse.jface.action.IAction, org.eclipse.swt.widgets.Event)
*/
@Override
public void runWithEvent(IAction action, Event event) {
run(action);
}
}
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