| /******************************************************************************* |
| * Copyright (c) 2006 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 API and implementation |
| *******************************************************************************/ |
| package org.eclipse.debug.internal.ui.model.elements; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.debug.core.model.IErrorReportingExpression; |
| import org.eclipse.debug.core.model.IExpression; |
| import org.eclipse.debug.core.model.IValue; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationContext; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerUpdate; |
| |
| /** |
| * @since 3.3 |
| */ |
| public class ExpressionContentProvider extends VariableContentProvider { |
| |
| protected Object[] getAllChildren(Object parent, IPresentationContext context) throws CoreException { |
| if (parent instanceof IErrorReportingExpression) { |
| IErrorReportingExpression expression = (IErrorReportingExpression) parent; |
| if (expression.hasErrors()) { |
| return expression.getErrorMessages(); |
| } |
| } |
| if (parent instanceof IExpression) { |
| IExpression expression = (IExpression) parent; |
| IValue value = expression.getValue(); |
| if (value != null) { |
| return getValueChildren(expression, value, context); |
| } |
| } |
| return EMPTY; |
| } |
| |
| protected boolean hasChildren(Object element, IPresentationContext context, IViewerUpdate monitor) throws CoreException { |
| if (element instanceof IErrorReportingExpression) { |
| IErrorReportingExpression expression = (IErrorReportingExpression) element; |
| if (expression.hasErrors()) { |
| return true; |
| } |
| } |
| IValue value = ((IExpression)element).getValue(); |
| if (value == null) { |
| return false; |
| } |
| return value.hasVariables(); |
| } |
| } |