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/*******************************************************************************
* Copyright (c) 2005 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 implementation
*******************************************************************************/
package org.eclipse.jdt.internal.debug.ui.actions;
import org.eclipse.debug.core.DebugException;
import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.core.ILogicalStructureType;
import org.eclipse.debug.core.model.IValue;
import org.eclipse.jdt.debug.core.IJavaVariable;
import org.eclipse.jdt.internal.debug.core.logicalstructures.JavaLogicalStructure;
import org.eclipse.jdt.internal.debug.core.logicalstructures.JavaLogicalStructures;
import org.eclipse.jdt.internal.debug.core.logicalstructures.JavaStructureErrorValue;
import org.eclipse.jdt.internal.debug.ui.EditLogicalStructureDialog;
import org.eclipse.jdt.internal.debug.ui.JDIDebugUIPlugin;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IObjectActionDelegate;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.actions.ActionDelegate;
/**
* Action which prompts the user to edit the logical structure that
* is currently active on the given object.
*/
public class EditVariableLogicalStructureAction extends ActionDelegate implements IObjectActionDelegate {
/**
* The editable structure for the currently selected variable or
* <code>null</code> if none.
*/
private JavaLogicalStructure fStructure= null;
/* (non-Javadoc)
* @see org.eclipse.ui.IObjectActionDelegate#setActivePart(org.eclipse.jface.action.IAction, org.eclipse.ui.IWorkbenchPart)
*/
public void setActivePart(IAction action, IWorkbenchPart targetPart) {
}
/**
* Prompt the user to edit the logical structure associated with the currently
* selected variable.
*/
@Override
public void run(IAction action) {
if (fStructure == null) {
return;
}
Shell shell= JDIDebugUIPlugin.getActiveWorkbenchShell();
if (shell != null) {
EditLogicalStructureDialog dialog= new EditLogicalStructureDialog(shell, fStructure);
if (dialog.open() == Window.OK) {
JavaLogicalStructures.saveUserDefinedJavaLogicalStructures();
}
}
}
/**
* @see ActionDelegate#selectionChanged(org.eclipse.jface.action.IAction, org.eclipse.jface.viewers.ISelection)
*/
@Override
public void selectionChanged(IAction action, ISelection selection) {
fStructure= null;
Object element = ((IStructuredSelection) selection).getFirstElement();
if (element instanceof IJavaVariable) {
try {
IValue value= ((IJavaVariable) element).getValue();
if (value instanceof JavaStructureErrorValue) {
value= ((JavaStructureErrorValue) value).getParentValue();
}
ILogicalStructureType type= getLogicalStructure(value);
if (type instanceof JavaLogicalStructure) {
JavaLogicalStructure javaStructure= (JavaLogicalStructure) type;
if (!javaStructure.isContributed()) {
fStructure= javaStructure;
}
}
} catch (DebugException e) {
JDIDebugUIPlugin.log(e.getStatus());
}
}
action.setEnabled(fStructure != null);
}
/**
* Returns the logical structure currently associated with the given
* value or <code>null</code> if none.
* @param value the value
* @return the logical structure currently associated with the given
* value or <code>null</code> if none.
*/
public static ILogicalStructureType getLogicalStructure(IValue value) {
// This code is based on VariablesViewContentProvider#getLogicalValue(IValue)
ILogicalStructureType type = null;
ILogicalStructureType[] types = DebugPlugin.getLogicalStructureTypes(value);
if (types.length > 0) {
type= DebugPlugin.getDefaultStructureType(types);
}
return type;
}
}
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