package org.eclipse.debug.internal.ui.actions; | |
/* | |
* (c) Copyright IBM Corp. 2000, 2001. | |
* All Rights Reserved. | |
*/ | |
import org.eclipse.debug.core.DebugPlugin; | |
import org.eclipse.debug.core.IExpressionManager; | |
import org.eclipse.debug.core.model.IExpression; | |
import org.eclipse.debug.core.model.IVariable; | |
import org.eclipse.debug.ui.IDebugView; | |
import org.eclipse.jface.viewers.ITreeContentProvider; | |
import org.eclipse.jface.viewers.TreeViewer; | |
import org.eclipse.jface.viewers.Viewer; | |
public class RemoveExpressionAction extends AbstractRemoveActionDelegate { | |
protected void doAction(Object element) { | |
IExpressionManager manager = DebugPlugin.getDefault().getExpressionManager(); | |
IExpression exp = getExpression(element); | |
if (exp != null) { | |
manager.removeExpression(exp); | |
} | |
} | |
/** | |
* Returns the expression associated with the given | |
* element. | |
* | |
* @param element an expression of child of an expression in | |
* the expression view. | |
* @return associated expression | |
*/ | |
protected IExpression getExpression(Object obj) { | |
if (getView() == null) { | |
return null; | |
} | |
IDebugView adapter= (IDebugView)getView().getAdapter(IDebugView.class); | |
if (adapter != null) { | |
Viewer v= adapter.getViewer(); | |
if (v instanceof TreeViewer) { | |
ITreeContentProvider cp = (ITreeContentProvider)((TreeViewer)v).getContentProvider(); | |
while (!(obj instanceof IExpression) && obj != null) { | |
obj = cp.getParent(obj); | |
} | |
return (IExpression)obj; | |
} | |
} | |
return null; | |
} | |
/** | |
* @see AbstractDebugActionDelegate#isEnabledFor(Object) | |
*/ | |
protected boolean isEnabledFor(Object element) { | |
return element instanceof IVariable || element instanceof IExpression; | |
} | |
} | |