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Java > Open Source Codes > org > eclipse > jdt > launching > sourcelookup > containers > ClasspathVariableSourceContainer


1 /*******************************************************************************
2  * Copyright (c) 2000, 2005 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.jdt.launching.sourcelookup.containers;
12
13 import org.eclipse.core.runtime.CoreException;
14 import org.eclipse.core.runtime.IPath;
15 import org.eclipse.debug.core.sourcelookup.ISourceContainer;
16 import org.eclipse.debug.core.sourcelookup.ISourceContainerType;
17 import org.eclipse.debug.core.sourcelookup.containers.CompositeSourceContainer;
18 import org.eclipse.jdt.core.JavaCore;
19 import org.eclipse.jdt.internal.launching.LaunchingPlugin;
20 import org.eclipse.jdt.launching.IRuntimeClasspathEntry;
21 import org.eclipse.jdt.launching.JavaRuntime;
22
23 /**
24  * A classpath variable source container contains a source container
25  * that is the resolved value of the associated variable.
26  * <p>
27  * This class may be instantiated; this class is not intended to be
28  * subclassed.
29  * </p>
30  * @since 3.0
31  */
32 public class ClasspathVariableSourceContainer extends CompositeSourceContainer {
33     
34     private IPath fVariable;
35     /**
36      * Unique identifier for Java project source container type
37      * (value <code>org.eclipse.jdt.launching.sourceContainer.classpathVariable</code>).
38      */
39     public static final String JavaDoc TYPE_ID = LaunchingPlugin.getUniqueIdentifier() + ".sourceContainer.classpathVariable"; //$NON-NLS-1$
40
41     /**
42      * Constructs a new source container on the given variable and suffix.
43      *
44      * @param variablePath path representing a Java classpath variable.
45      * The first segment is the variable name, and the following segments
46      * (if any) are appended to the variable.
47      */
48     public ClasspathVariableSourceContainer(IPath variablePath) {
49         fVariable = variablePath;
50     }
51     
52     /* (non-Javadoc)
53      * @see org.eclipse.debug.internal.core.sourcelookup.containers.CompositeSourceContainer#createSourceContainers()
54      */
55     protected ISourceContainer[] createSourceContainers() throws CoreException {
56         IPath path = JavaCore.getClasspathVariable(fVariable.segment(0));
57         if (path == null) {
58             return new ISourceContainer[0];
59         }
60         if (fVariable.segmentCount() > 1) {
61             path = path.append(fVariable.removeFirstSegments(1));
62         }
63         IRuntimeClasspathEntry entry = JavaRuntime.newArchiveRuntimeClasspathEntry(path);
64         return JavaRuntime.getSourceContainers(new IRuntimeClasspathEntry[]{entry});
65     }
66     /* (non-Javadoc)
67      * @see org.eclipse.debug.internal.core.sourcelookup.ISourceContainer#getName()
68      */
69     public String JavaDoc getName() {
70         return fVariable.toOSString();
71     }
72     
73     /**
74      * Returns the variable this container references as a path. The
75      * first segment is the variable name, and the following segments
76      * are appended to the variable's value.
77      *
78      * @return path representing the variable and suffix
79      */
80     public IPath getPath() {
81         return fVariable;
82     }
83     
84     /* (non-Javadoc)
85      * @see org.eclipse.debug.internal.core.sourcelookup.ISourceContainer#getType()
86      */
87     public ISourceContainerType getType() {
88         return getSourceContainerType(TYPE_ID);
89     }
90 }
91
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