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Java > Open Source Codes > org > eclipse > debug > internal > ui > model > elements > ExpressionManagerContentProvider


1 /*******************************************************************************
2  * Copyright (c) 2006, 2007 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * IBM Corporation - initial API and implementation
10  *******************************************************************************/
11 package org.eclipse.debug.internal.ui.model.elements;
12
13 import org.eclipse.core.runtime.CoreException;
14 import org.eclipse.debug.core.IExpressionManager;
15 import org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationContext;
16 import org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerUpdate;
17 import org.eclipse.debug.ui.IDebugUIConstants;
18
19 /**
20  *
21  */
22 public class ExpressionManagerContentProvider extends ElementContentProvider {
23
24     /* (non-Javadoc)
25      * @see org.eclipse.debug.internal.ui.viewers.model.provisional.elements.ElementContentProvider#getChildCount(java.lang.Object, org.eclipse.debug.internal.ui.viewers.provisional.IPresentationContext)
26      */
27     protected int getChildCount(Object JavaDoc element, IPresentationContext context, IViewerUpdate monitor) throws CoreException {
28         return ((IExpressionManager) element).getExpressions().length;
29     }
30
31     /* (non-Javadoc)
32      * @see org.eclipse.debug.internal.ui.viewers.model.provisional.elements.ElementContentProvider#getChildren(java.lang.Object, int, int, org.eclipse.debug.internal.ui.viewers.provisional.IPresentationContext)
33      */
34     protected Object JavaDoc[] getChildren(Object JavaDoc parent, int index, int length, IPresentationContext context, IViewerUpdate monitor) throws CoreException {
35         return getElements(((IExpressionManager) parent).getExpressions(), index, length);
36     }
37
38     /* (non-Javadoc)
39      * @see org.eclipse.debug.internal.ui.viewers.model.provisional.elements.ElementContentProvider#supportsContextId(java.lang.String)
40      */
41     protected boolean supportsContextId(String JavaDoc id) {
42         return id.equals(IDebugUIConstants.ID_EXPRESSION_VIEW);
43     }
44
45     protected boolean hasChildren(Object JavaDoc element, IPresentationContext context, IViewerUpdate monitor) throws CoreException {
46         return ((IExpressionManager)element).hasExpressions();
47     }
48     
49     
50
51 }
52
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