/*******************************************************************************
* Copyright (c) 2009, 2012 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.expression;
import org.eclipse.cdt.dsf.debug.ui.viewmodel.IDebugVMConstants;
import org.eclipse.cdt.dsf.ui.viewmodel.AbstractVMContext;
import org.eclipse.cdt.dsf.ui.viewmodel.IVMNode;
import org.eclipse.debug.core.model.IExpression;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IElementLabelProvider;
import org.eclipse.debug.internal.ui.viewers.model.provisional.ILabelUpdate;
import org.eclipse.debug.ui.DebugUITools;
import org.eclipse.debug.ui.IDebugUIConstants;
import org.eclipse.jface.resource.JFaceResources;
/**
* VMC of an expression object that failed to get parsed by any of the
* configured expression layout nodes. It is only used to display an
* error message in the view, and to allow the user to edit the
* expression.
* <p>
* Note: VM Nodes using this invalid expression VM context should
* provide a cell modifier to edit the expressions. The cell modifier
* should subclass {@link WatchExpressionCellModifier}.
* </p>
*
* @since 1.1
*/
public class InvalidExpressionVMContext extends AbstractVMContext implements IElementLabelProvider {
final private IExpression fExpression;
public InvalidExpressionVMContext(IVMNode node, IExpression expression) {
super(node);
fExpression = expression;
}
@Override
@SuppressWarnings({ "rawtypes", "unchecked" })
public Object getAdapter(Class adapter) {
if (adapter.isAssignableFrom(fExpression.getClass())) {
return fExpression;
} else {
return super.getAdapter(adapter);
}
}
public IExpression getExpression() {
return fExpression;
}
@Override
public boolean equals(Object obj) {
return obj instanceof InvalidExpressionVMContext && ((InvalidExpressionVMContext)obj).fExpression.equals(fExpression);
}
@Override
public int hashCode() {
return fExpression.hashCode();
}
/**
* Updates the label for the InvalidExpressionVMC.
*/
@Override
public void update(ILabelUpdate[] updates) {
for (ILabelUpdate update : updates) {
String[] columnIds = update.getColumnIds() != null ?
update.getColumnIds() : new String[] { IDebugVMConstants.COLUMN_ID__NAME };
for (int i = 0; i < columnIds.length; i++) {
if (IDebugVMConstants.COLUMN_ID__EXPRESSION.equals(columnIds[i])) {
update.setLabel(getExpression().getExpressionText(), i);
update.setImageDescriptor(DebugUITools.getImageDescriptor( IDebugUIConstants.IMG_OBJS_EXPRESSION ), i);
} else if (IDebugVMConstants.COLUMN_ID__NAME.equals(columnIds[i])) {
update.setLabel(getExpression().getExpressionText(), i);
update.setImageDescriptor(DebugUITools.getImageDescriptor( IDebugUIConstants.IMG_OBJS_EXPRESSION ), i);
} else if (IDebugVMConstants.COLUMN_ID__VALUE.equals(columnIds[i])) {
update.setLabel(MessagesForExpressionVM.ExpressionManagerLayoutNode__invalidExpression_valueColumn_label, i);
} else {
update.setLabel("", i); //$NON-NLS-1$
}
update.setFontData(JFaceResources.getFontDescriptor(IDebugUIConstants.PREF_VARIABLE_TEXT_FONT).getFontData()[0], i);
}
update.done();
}
}
}