|
1
11 package org.eclipse.jdt.internal.ui.workingsets;
12
13 import java.util.Arrays  ;
14 import java.util.HashSet ;
15 import java.util.Iterator ;
16 import java.util.List ;
17
18 import org.eclipse.core.runtime.IAdaptable;
19
20 import org.eclipse.jface.viewers.IStructuredSelection;
21 import org.eclipse.jface.viewers.ITreeSelection;
22 import org.eclipse.jface.viewers.TreePath;
23
24 import org.eclipse.ui.IWorkbenchSite;
25 import org.eclipse.ui.IWorkingSet;
26
27 import org.eclipse.jdt.ui.actions.SelectionDispatchAction;
28
29 public class RemoveWorkingSetElementAction extends SelectionDispatchAction {
30
31 public RemoveWorkingSetElementAction(IWorkbenchSite site) {
32 super(site);
33 setText(WorkingSetMessages.RemoveWorkingSetElementAction_label);
34 }
35
36 public void selectionChanged(IStructuredSelection selection) {
37 IWorkingSet workingSet= getWorkingSet(selection);
38 setEnabled(workingSet != null && !OthersWorkingSetUpdater.ID.equals(workingSet.getId()));
39 }
40
41 private IWorkingSet getWorkingSet(IStructuredSelection selection) {
42 if (!(selection instanceof ITreeSelection))
43 return null;
44 ITreeSelection treeSelection= (ITreeSelection)selection;
45 List elements= treeSelection.toList();
46 IWorkingSet result= null;
47 for (Iterator iter= elements.iterator(); iter.hasNext();) {
48 Object element= iter.next();
49 TreePath[] paths= treeSelection.getPathsFor(element);
50 if (paths.length != 1)
51 return null;
52 TreePath path= paths[0];
53 if (path.getSegmentCount() != 2)
54 return null;
55 Object candidate= path.getSegment(0);
56 if (!(candidate instanceof IWorkingSet))
57 return null;
58 if (result == null) {
59 result= (IWorkingSet)candidate;
60 } else {
61 if (result != candidate)
62 return null;
63 }
64 }
65 return result;
66 }
67
68 public void run(IStructuredSelection selection) {
69 IWorkingSet ws= getWorkingSet(selection);
70 if (ws == null)
71 return;
72 HashSet elements= new HashSet (Arrays.asList(ws.getElements()));
73 List selectedElements= selection.toList();
74 for (Iterator iter= selectedElements.iterator(); iter.hasNext();) {
75 Object object= iter.next();
76 if (object instanceof IAdaptable) {
77 IAdaptable[] adaptedElements= ws.adaptElements(new IAdaptable[] {(IAdaptable)object});
78 if (adaptedElements.length == 1) {
79 elements.remove(adaptedElements[0]);
80 }
81 }
82 }
83 ws.setElements((IAdaptable[])elements.toArray(new IAdaptable[elements.size()]));
84 }
85 }
86 |
Popular Tags |
Java API By Example, From Geeks To Geeks.