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Java > Open Source Codes > org > eclipse > ui > internal > ide > model > WorkbenchProject


1 /*******************************************************************************
2  * Copyright (c) 2000, 2006 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.ui.internal.ide.model;
12
13 import java.util.HashMap JavaDoc;
14
15 import org.eclipse.core.resources.IProject;
16 import org.eclipse.core.resources.IResource;
17 import org.eclipse.core.runtime.CoreException;
18 import org.eclipse.jface.resource.ImageDescriptor;
19 import org.eclipse.swt.graphics.Point;
20 import org.eclipse.ui.IProjectActionFilter;
21 import org.eclipse.ui.ide.IDE;
22 import org.eclipse.ui.internal.ide.IDEInternalWorkbenchImages;
23 import org.eclipse.ui.internal.ide.IDEWorkbenchPlugin;
24 import org.eclipse.ui.internal.ide.misc.OverlayIcon;
25
26 /**
27  * An IWorkbenchAdapter that represents IProject.
28  */
29 public class WorkbenchProject extends WorkbenchResource implements
30         IProjectActionFilter {
31     HashMap JavaDoc imageCache = new HashMap JavaDoc(11);
32
33     /**
34      * Answer the appropriate base image to use for the passed resource, optionally
35      * considering the passed open status as well iff appropriate for the type of
36      * passed resource
37      */
38     protected ImageDescriptor getBaseImage(IResource resource) {
39         IProject project = (IProject) resource;
40         boolean isOpen = project.isOpen();
41         String JavaDoc baseKey = isOpen ? IDE.SharedImages.IMG_OBJ_PROJECT
42                 : IDE.SharedImages.IMG_OBJ_PROJECT_CLOSED;
43         if (isOpen) {
44             try {
45                 String JavaDoc[] natureIds = project.getDescription().getNatureIds();
46                 for (int i = 0; i < natureIds.length; ++i) {
47                     // Have to use a cache because OverlayIcon does not define its own equality criteria,
48 // so WorkbenchLabelProvider would always create a new image otherwise.
49 String JavaDoc imageKey = natureIds[i];
50                     ImageDescriptor overlayImage = (ImageDescriptor) imageCache
51                             .get(imageKey);
52                     if (overlayImage != null) {
53                         return overlayImage;
54                     }
55                     ImageDescriptor natureImage = IDEWorkbenchPlugin
56                             .getDefault().getProjectImageRegistry()
57                             .getNatureImage(natureIds[i]);
58                     if (natureImage != null) {
59                         ImageDescriptor baseImage = IDEInternalWorkbenchImages
60                                 .getImageDescriptor(baseKey);
61                         overlayImage = new OverlayIcon(baseImage,
62                                 new ImageDescriptor[][] { { natureImage } },
63                                 new Point(16, 16));
64                         imageCache.put(imageKey, overlayImage);
65                         return overlayImage;
66                     }
67                 }
68             } catch (CoreException e) {
69             }
70         }
71         return IDEInternalWorkbenchImages.getImageDescriptor(baseKey);
72     }
73
74     /**
75      * Returns the children of this container.
76      */
77     public Object JavaDoc[] getChildren(Object JavaDoc o) {
78         IProject project = (IProject) o;
79         if (project.isOpen()) {
80             try {
81                 return project.members();
82             } catch (CoreException e) {
83                 //don't get the children if there are problems with the project
84 }
85         }
86         return NO_CHILDREN;
87     }
88
89     /**
90      * Returns whether the specific attribute matches the state of the target
91      * object.
92      *
93      * @param target the target object
94      * @param name the attribute name
95      * @param value the attriute value
96      * @return <code>true</code> if the attribute matches; <code>false</code> otherwise
97      */
98     public boolean testAttribute(Object JavaDoc target, String JavaDoc name, String JavaDoc value) {
99         if (!(target instanceof IProject)) {
100             return false;
101         }
102         IProject proj = (IProject) target;
103         if (name.equals(NATURE)) {
104             try {
105                 return proj.isAccessible() && proj.hasNature(value);
106             } catch (CoreException e) {
107                 return false;
108             }
109         } else if (name.equals(OPEN)) {
110             value = value.toLowerCase();
111             return (proj.isOpen() == value.equals("true"));//$NON-NLS-1$
112 }
113         return super.testAttribute(target, name, value);
114     }
115 }
116
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