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/*******************************************************************************
* Copyright (c) 2007, 2009 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.variable;
import org.eclipse.cdt.dsf.concurrent.DsfRunnable;
import org.eclipse.cdt.dsf.debug.service.IFormattedValues;
import org.eclipse.cdt.dsf.debug.service.IExpressions.IExpressionDMContext;
import org.eclipse.cdt.dsf.debug.ui.viewmodel.IDebugVMConstants;
import org.eclipse.cdt.dsf.debug.ui.viewmodel.expression.WatchExpressionCellModifier;
import org.eclipse.cdt.dsf.debug.ui.viewmodel.numberformat.FormattedValueVMUtil;
import org.eclipse.cdt.dsf.ui.viewmodel.IVMContext;
import org.eclipse.cdt.dsf.ui.viewmodel.update.AbstractCachingVMProvider;
import org.eclipse.cdt.dsf.ui.viewmodel.update.UserEditEvent;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationContext;
public class VariableCellModifier extends WatchExpressionCellModifier {
private AbstractCachingVMProvider fProvider;
private SyncVariableDataAccess fDataAccess = null;
public VariableCellModifier(AbstractCachingVMProvider provider, SyncVariableDataAccess access)
{
fProvider = provider;
fDataAccess = access;
}
/*
* Used to make sure we are dealing with a valid variable.
*/
private IExpressionDMContext getVariableDMC(Object element) {
if (element instanceof IAdaptable) {
return (IExpressionDMContext)((IAdaptable)element).getAdapter(IExpressionDMContext.class);
}
return null;
}
/* (non-Javadoc)
* @see org.eclipse.cdt.dsf.debug.ui.viewmodel.expression.WatchExpressionCellModifier#canModify(java.lang.Object, java.lang.String)
*/
@Override
public boolean canModify(Object element, String property) {
// If we're in the column value, modify the register data. Otherwise, call the super-class to edit
// the watch expression.
if (IDebugVMConstants.COLUMN_ID__VALUE.equals(property)) {
// Make sure we are are dealing with a valid set of information.
if (getVariableDMC(element) == null) {
return false;
}
return fDataAccess.canWriteExpression(element);
}
return super.canModify(element, property);
}
/* (non-Javadoc)
* @see org.eclipse.cdt.dsf.debug.ui.viewmodel.expression.WatchExpressionCellModifier#getValue(java.lang.Object, java.lang.String)
*/
@Override
public Object getValue(Object element, String property) {
// If we're in the column value, modify the variable value. Otherwise, call the super-class to edit
// the watch expression.
if (IDebugVMConstants.COLUMN_ID__VALUE.equals(property)) {
/*
* We let the Model provider supply the current format.
*/
String formatId;
if ( element instanceof IVMContext) {
/*
* Find the presentation context and then use it to get the current desired format.
*/
IVMContext ctx = (IVMContext) element;
IPresentationContext presCtx = ctx.getVMNode().getVMProvider().getPresentationContext();
formatId = FormattedValueVMUtil.getPreferredFormat(presCtx);
}
else {
formatId = IFormattedValues.NATURAL_FORMAT;
}
String value = fDataAccess.getEditableValue(element, formatId);
if (value == null) {
return "..."; //$NON-NLS-1$
}
return value;
}
return super.getValue(element, property);
}
/* (non-Javadoc)
* @see org.eclipse.cdt.dsf.debug.ui.viewmodel.expression.WatchExpressionCellModifier#modify(java.lang.Object, java.lang.String, java.lang.Object)
*/
@Override
public void modify(final Object element, String property, Object value) {
/*
* If we're in the Value column, modify the variable/register data. The
* other columns in the Variables and Registers view are non-modifiable.
* If we're called for another column, pass the request to our super
* class; the column is likely a column it handles (Expression, for
* example).
*/
if (IDebugVMConstants.COLUMN_ID__VALUE.equals(property)) {
if (value instanceof String) {
/*
* We let the Model provider supply the current format.
*/
String formatId;
if ( element instanceof IVMContext) {
/*
* Find the presentation context and then use it to get the current desired format.
*/
IVMContext ctx = (IVMContext) element;
IPresentationContext presCtx = ctx.getVMNode().getVMProvider().getPresentationContext();
formatId = FormattedValueVMUtil.getPreferredFormat(presCtx);
}
else {
formatId = IFormattedValues.NATURAL_FORMAT;
}
fDataAccess.writeVariable(element, (String) value, formatId);
fProvider.getExecutor().execute(new DsfRunnable() {
public void run() {
fProvider.handleEvent(new UserEditEvent(element));
}
});
}
}
else {
super.modify(element, property, value);
}
}
}
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