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/*******************************************************************************
* Copyright (c) 2010 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 java.text.MessageFormat;
import org.eclipse.cdt.dsf.concurrent.IDsfStatusConstants;
import org.eclipse.cdt.dsf.concurrent.RequestMonitor;
import org.eclipse.cdt.dsf.debug.ui.viewmodel.IDebugVMConstants;
import org.eclipse.cdt.dsf.internal.ui.DsfUIPlugin;
import org.eclipse.cdt.dsf.ui.viewmodel.AbstractVMNode;
import org.eclipse.cdt.dsf.ui.viewmodel.IVMNode;
import org.eclipse.cdt.dsf.ui.viewmodel.IVMProvider;
import org.eclipse.cdt.dsf.ui.viewmodel.VMDelta;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.debug.core.model.IExpression;
import org.eclipse.debug.core.model.IWatchExpression;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IChildrenCountUpdate;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IChildrenUpdate;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IElementEditor;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IHasChildrenUpdate;
import org.eclipse.debug.internal.ui.viewers.model.provisional.ILabelUpdate;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelDelta;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationContext;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerUpdate;
import org.eclipse.debug.ui.DebugUITools;
import org.eclipse.debug.ui.IDebugUIConstants;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.ICellModifier;
import org.eclipse.jface.viewers.TextCellEditor;
import org.eclipse.jface.viewers.TreePath;
import org.eclipse.swt.widgets.Composite;
/**
* Expression VM Node which handles displaying disabled expressions.
*
* @since 2.1
*/
public class DisabledExpressionVMNode extends AbstractVMNode
implements IExpressionVMNode, IElementEditor
{
/** Cached reference to a cell modifier for editing expression strings of disabled expressions */
private WatchExpressionCellModifier fWatchExpressionCellModifier = new WatchExpressionCellModifier();
private static class DisabledExpressionVMContext extends InvalidExpressionVMContext {
private static final MessageFormat NO_COLUMN_FORMAT = new MessageFormat(MessagesForExpressionVM.DisabledExpressionVMNode_disabled_no_columns);
DisabledExpressionVMContext(IVMNode node, IExpression expression) {
super(node, expression);
}
/**
* Updates the label for the DisabledExpressionVMNode.
*/
@Override
public void update(ILabelUpdate[] updates) {
for (ILabelUpdate update : updates) {
if (update.getColumnIds() == null) {
update.setLabel(NO_COLUMN_FORMAT.format( new Object[] { getExpression().getExpressionText() }), 0);
update.setImageDescriptor(DebugUITools.getImageDescriptor( IDebugUIConstants.IMG_OBJS_EXPRESSION ), 0);
} else {
String[] columnIds = update.getColumnIds();
for (int i = 0; i < update.getColumnIds().length; i++) {
if (IDebugVMConstants.COLUMN_ID__EXPRESSION.equals(columnIds[i]) ||
IDebugVMConstants.COLUMN_ID__NAME.equals(columnIds[i]))
{
update.setLabel(getExpression().getExpressionText(), i);
update.setImageDescriptor(DebugUITools.getImageDescriptor( IDebugUIConstants.IMG_OBJS_EXPRESSION ), i);
} else {
update.setLabel(MessagesForExpressionVM.DisabledExpressionVMNode_disabled_value, i);
}
update.setFontData(JFaceResources.getFontDescriptor(IDebugUIConstants.PREF_VARIABLE_TEXT_FONT).getFontData()[0], i);
}
}
update.done();
}
}
}
public DisabledExpressionVMNode(IVMProvider provider) {
super(provider);
}
@Override
public boolean canParseExpression(IExpression expression) {
return expression instanceof IWatchExpression && !((IWatchExpression)expression).isEnabled();
}
@Override
public int getDeltaFlagsForExpression(IExpression expression, Object event) {
return IModelDelta.NO_CHANGE;
}
@Override
public int getDeltaFlags(Object event) {
return IModelDelta.NO_CHANGE;
}
@Override
public void buildDelta(Object event, VMDelta parent, int nodeOffset, RequestMonitor requestMonitor) {
requestMonitor.done();
}
@Override
public void update(IChildrenCountUpdate[] updates) {
for (IViewerUpdate update : updates) {
update.setStatus(new Status(IStatus.ERROR, DsfUIPlugin.PLUGIN_ID, IDsfStatusConstants.NOT_SUPPORTED, "Not supported", null)); //$NON-NLS-1$
update.done();
}
}
@Override
public void update(IChildrenUpdate[] updates) {
for (IViewerUpdate update : updates) {
update.setStatus(new Status(IStatus.ERROR, DsfUIPlugin.PLUGIN_ID, IDsfStatusConstants.NOT_SUPPORTED, "Not supported", null)); //$NON-NLS-1$
update.done();
}
}
@Override
public void update(IHasChildrenUpdate[] updates) {
for (IViewerUpdate update : updates) {
update.setStatus(new Status(IStatus.ERROR, DsfUIPlugin.PLUGIN_ID, IDsfStatusConstants.NOT_SUPPORTED, "Not supported", null)); //$NON-NLS-1$
update.done();
}
}
@Override
public void update(IExpressionUpdate update) {
update.setExpressionElement(new DisabledExpressionVMContext(this, update.getExpression()));
update.done();
}
@Override
public void buildDeltaForExpression(IExpression expression, int elementIdx, Object event, VMDelta parentDelta,
TreePath path, RequestMonitor rm)
{
rm.done();
}
@Override
public void buildDeltaForExpressionElement(Object element, int elementIdx, Object event, VMDelta parentDelta,
RequestMonitor rm) {
rm.done();
}
@Override
public CellEditor getCellEditor(IPresentationContext context, String columnId, Object element, Composite parent) {
if (IDebugVMConstants.COLUMN_ID__EXPRESSION.equals(columnId)) {
return new TextCellEditor(parent);
}
return null;
}
@Override
public ICellModifier getCellModifier(IPresentationContext context, Object element) {
return fWatchExpressionCellModifier;
}
}
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