/*******************************************************************************
* Copyright (c) 2006, 2011 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
* Winnie Lai (Texas Instruments) - Individual Element Number Format in editing (Bug 343021)
*******************************************************************************/
package org.eclipse.cdt.dsf.debug.ui.viewmodel.register;
import org.eclipse.cdt.dsf.datamodel.DMContexts;
import org.eclipse.cdt.dsf.datamodel.IDMContext;
import org.eclipse.cdt.dsf.debug.service.IFormattedValues;
import org.eclipse.cdt.dsf.debug.service.IRegisters.IRegisterDMContext;
import org.eclipse.cdt.dsf.debug.service.IRegisters.IRegisterDMData;
import org.eclipse.cdt.dsf.debug.ui.viewmodel.IDebugVMConstants;
import org.eclipse.cdt.dsf.debug.ui.viewmodel.expression.WatchExpressionCellModifier;
import org.eclipse.cdt.dsf.ui.viewmodel.IVMContext;
import org.eclipse.cdt.dsf.ui.viewmodel.datamodel.IDMVMContext;
import org.eclipse.cdt.dsf.ui.viewmodel.update.AbstractCachingVMProvider;
import org.eclipse.cdt.dsf.ui.viewmodel.update.UserEditEvent;
public class RegisterCellModifier extends WatchExpressionCellModifier {
private AbstractCachingVMProvider fProvider;
private SyncRegisterDataAccess fDataAccess = null;
protected String formatInEditing;
public RegisterCellModifier(AbstractCachingVMProvider provider, SyncRegisterDataAccess access)
{
fProvider = provider;
fDataAccess = access;
}
public SyncRegisterDataAccess getRegisterDataAccess() {
return fDataAccess;
}
/*
* Used to make sure we are dealing with a valid register.
*/
protected IRegisterDMContext getRegisterDMC(Object element) {
if (element instanceof IDMVMContext) {
IDMContext dmc = ((IDMVMContext)element).getDMContext();
return DMContexts.getAncestorOfType(dmc, IRegisterDMContext.class);
}
return null;
}
@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 ( getRegisterDMC(element) == null ) return false;
/*
* We need to read the register in order to get the attributes.
*/
IRegisterDMData regData = fDataAccess.readRegister(element);
if ( ( regData != null ) && ( ! regData.isWriteable() ) ) return false;
return true ;
} else {
return super.canModify(element, property);
}
}
@Override
public Object getValue(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) ) {
/*
* We let the Model provider supply the current format.
*/
String formatId = null;
if ( element instanceof IVMContext) {
formatId = queryFormat((IVMContext) element);
}
else {
formatId = IFormattedValues.NATURAL_FORMAT;
}
formatInEditing = formatId;
String value =
fDataAccess.getFormattedRegisterValue(element, formatId);
if ( value == null ) { return "..."; } //$NON-NLS-1$
else { return value; }
} else {
return super.getValue(element, property);
}
}
@Override
public void modify(Object element, String property, Object value) {
/*
* 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) ) {
if (value instanceof String) {
/*
* We let the Model provider supply the current format.
*/
String formatId = formatInEditing;
if ( element instanceof IVMContext) {
if (formatId == null) {
formatId = queryFormat((IVMContext) element);
}
}
else {
formatId = IFormattedValues.NATURAL_FORMAT;
}
fDataAccess.writeRegister(element, (String) value, formatId);
fProvider.handleEvent(new UserEditEvent(element));
}
} else {
super.modify(element, property, value);
}
}
}