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/*******************************************************************************
* Copyright (c) 2006, 2008 Wind River Systems 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.dsf.debug.ui.viewmodel.expression;
import org.eclipse.cdt.dsf.concurrent.ThreadSafeAndProhibitedFromDsfExecutor;
import org.eclipse.cdt.dsf.debug.ui.viewmodel.IDebugVMConstants;
import org.eclipse.cdt.dsf.debug.ui.viewmodel.expression.ExpressionManagerVMNode.NewExpressionVMC;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.core.IExpressionManager;
import org.eclipse.debug.core.model.IWatchExpression;
import org.eclipse.jface.viewers.ICellModifier;
/**
*
*/
@ThreadSafeAndProhibitedFromDsfExecutor("")
public class WatchExpressionCellModifier implements ICellModifier {
/**
* Constructor for the modifier requires a valid DSF session in order to
* initialize the service tracker.
* @param session DSF session this modifier will use.
*/
public WatchExpressionCellModifier() {
}
public boolean canModify(Object element, String property) {
return IDebugVMConstants.COLUMN_ID__EXPRESSION.equals(property) &&
(getWatchExpression(element) != null || element instanceof NewExpressionVMC);
}
public Object getValue(Object element, String property) {
if (!IDebugVMConstants.COLUMN_ID__EXPRESSION.equals(property)) return ""; //$NON-NLS-1$
IWatchExpression expression = getWatchExpression(element);
if (expression != null) {
return expression.getExpressionText();
}
return ""; //$NON-NLS-1$
}
public void modify(Object element, String property, Object value) {
if (!IDebugVMConstants.COLUMN_ID__EXPRESSION.equals(property)) return;
if (!(value instanceof String)) return;
String origStrValue = (String) value;
String strValue = origStrValue.trim();
IWatchExpression expression = getWatchExpression(element);
IExpressionManager expressionManager = DebugPlugin.getDefault().getExpressionManager();
if (expression != null) {
if (strValue.length() != 0) {
expression.setExpressionText(origStrValue);
} else {
// (bug 233111) If user entered a blank string, remove the expression.
expressionManager.removeExpression(expression);
}
} else if (element instanceof NewExpressionVMC && strValue.length() != 0) {
IWatchExpression watchExpression = expressionManager.newWatchExpression(origStrValue);
expressionManager.addExpression(watchExpression);
}
}
private IWatchExpression getWatchExpression(Object element) {
if (element instanceof IAdaptable) {
return (IWatchExpression)((IAdaptable)element).getAdapter(IWatchExpression.class);
}
return null;
}
}
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