JavaLaunchConfigurationTab


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.internal.debug.ui.launcher;
12  
13   
14  import org.eclipse.core.resources.IProject;
15  import org.eclipse.core.resources.IResource;
16  import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy;
17  import org.eclipse.debug.ui.AbstractLaunchConfigurationTab;
18  import org.eclipse.jdt.core.IJavaElement;
19  import org.eclipse.jdt.core.IJavaProject;
20  import org.eclipse.jdt.core.JavaCore;
21  import org.eclipse.jdt.internal.debug.ui.JDIDebugUIPlugin;
22  import org.eclipse.jdt.launching.IJavaLaunchConfigurationConstants;
23  import org.eclipse.jface.viewers.ISelection;
24  import org.eclipse.jface.viewers.IStructuredSelection;
25  import org.eclipse.ui.IEditorInput;
26  import org.eclipse.ui.IEditorPart;
27  import org.eclipse.ui.IWorkbenchPage;
28  
29  /**
30   * Common function for Java launch configuration tabs.
31   */
32  public abstract class JavaLaunchConfigurationTab extends AbstractLaunchConfigurationTab implements IEntriesChangedListener {
33          
34      /**
35       * Returns the current Java element context from which to initialize
36       * default settings, or <code>null</code> if none.
37       * 
38       * @return Java element context.
39       */
40      protected IJavaElement getContext() {
41          IWorkbenchPage page = JDIDebugUIPlugin.getActivePage();
42          if (page != null) {
43              ISelection selection = page.getSelection();
44              if (selection instanceof IStructuredSelection) {
45                  IStructuredSelection ss = (IStructuredSelection)selection;
46                  if (!ss.isEmpty()) {
47                      Object   obj = ss.getFirstElement();
48                      if (obj instanceof IJavaElement) {
49                          return (IJavaElement)obj;
50                      }
51                      if (obj instanceof IResource) {
52                          IJavaElement je = JavaCore.create((IResource)obj);
53                          if (je == null) {
54                              IProject pro = ((IResource)obj).getProject();
55                              je = JavaCore.create(pro);
56                          }
57                          if (je != null) {
58                              return je;
59                          }
60                      }
61                  }
62              }
63              IEditorPart part = page.getActiveEditor();
64              if (part != null) {
65                  IEditorInput input = part.getEditorInput();
66                  return (IJavaElement) input.getAdapter(IJavaElement.class);
67              }
68          }
69          return null;
70      }
71      
72      /**
73       * Set the java project attribute based on the IJavaElement.
74       */
75      protected void initializeJavaProject(IJavaElement javaElement, ILaunchConfigurationWorkingCopy config) {
76          IJavaProject javaProject = javaElement.getJavaProject();
77          String   name = null;
78          if (javaProject != null && javaProject.exists()) {
79              name = javaProject.getElementName();
80          }
81          config.setAttribute(IJavaLaunchConfigurationConstants.ATTR_PROJECT_NAME, name);
82      }   
83      
84      /**
85       * @see IEntriesChangedListener#entriesChanged(RuntimeClasspathViewer)
86       */
87      public void entriesChanged(IClasspathViewer viewer) {
88          setDirty(true);
89          updateLaunchConfigurationDialog();
90      }
91  }
92  
93
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