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/*******************************************************************************
* Copyright (c) 2008 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.debug.internal.ui.actions.expressions;
import org.eclipse.core.expressions.PropertyTester;
import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.core.model.IVariable;
import org.eclipse.debug.ui.actions.IWatchExpressionFactoryAdapter;
import org.eclipse.debug.ui.actions.IWatchExpressionFactoryAdapter2;
import org.eclipse.debug.ui.actions.IWatchExpressionFactoryAdapterExtension;
/**
* This class is used to check whether a given element can be used to create
* a watch expression. A single property can be tested
* "canCreateWatchExpression". Test for this property ignores the value and
* always returns a boolean.
*
* @since 3.4
*/
public class WatchExpressionFactoryTester extends PropertyTester {
public static final String CAN_CREATE_WATCH_EXPRESSION_PROPERTY = "canCreateWatchExpression"; //$NON-NLS-1$
/* (non-Javadoc)
* @see org.eclipse.core.expressions.PropertyTester#test(java.lang.Object, java.lang.String, java.lang.Object[], java.lang.Object)
*/
@Override
public boolean test(Object element, String property, Object[] args, Object expectedValue) {
if (CAN_CREATE_WATCH_EXPRESSION_PROPERTY.equals(property)){
if (element instanceof IVariable) {
IVariable variable = (IVariable)element;
if (DebugPlugin.getDefault().getExpressionManager().hasWatchExpressionDelegate(variable.getModelIdentifier())) {
IWatchExpressionFactoryAdapter factory = WatchHandler.getFactory(variable);
if (factory instanceof IWatchExpressionFactoryAdapterExtension) {
IWatchExpressionFactoryAdapterExtension ext = (IWatchExpressionFactoryAdapterExtension) factory;
return ext.canCreateWatchExpression(variable);
}
return true;
}
} else {
IWatchExpressionFactoryAdapter2 factory2 = WatchHandler.getFactory2(element);
if (factory2 != null) {
return factory2.canCreateWatchExpression(element);
}
}
}
return false;
}
}
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