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Java > Open Source Codes > org > eclipse > jdt > internal > ui > callhierarchy > LocationViewer


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  * Jesper Kamstrup Linnet (eclipse@kamstrup-linnet.dk) - initial API and implementation
10  * (report 36180: Callers/Callees view)
11  *******************************************************************************/
12 package org.eclipse.jdt.internal.ui.callhierarchy;
13
14 import java.util.ArrayList JavaDoc;
15
16 import org.eclipse.swt.SWT;
17 import org.eclipse.swt.dnd.Clipboard;
18 import org.eclipse.swt.events.FocusEvent;
19 import org.eclipse.swt.events.FocusListener;
20 import org.eclipse.swt.widgets.Composite;
21 import org.eclipse.swt.widgets.Menu;
22 import org.eclipse.swt.widgets.Table;
23 import org.eclipse.swt.widgets.TableColumn;
24
25 import org.eclipse.jface.action.IAction;
26 import org.eclipse.jface.action.IMenuListener;
27 import org.eclipse.jface.action.MenuManager;
28 import org.eclipse.jface.viewers.ArrayContentProvider;
29 import org.eclipse.jface.viewers.ColumnLayoutData;
30 import org.eclipse.jface.viewers.ColumnPixelData;
31 import org.eclipse.jface.viewers.ColumnWeightData;
32 import org.eclipse.jface.viewers.TableLayout;
33 import org.eclipse.jface.viewers.TableViewer;
34
35 import org.eclipse.ui.IActionBars;
36 import org.eclipse.ui.IViewSite;
37 import org.eclipse.ui.IWorkbenchPartSite;
38 import org.eclipse.ui.actions.ActionFactory;
39
40
41
42 class LocationViewer extends TableViewer {
43     private final String JavaDoc columnHeaders[] = {
44         CallHierarchyMessages.LocationViewer_ColumnIcon_header,
45         CallHierarchyMessages.LocationViewer_ColumnLine_header,
46         CallHierarchyMessages.LocationViewer_ColumnInfo_header};
47                                                 
48     private ColumnLayoutData columnLayouts[] = {
49         new ColumnPixelData(18, false, true),
50         new ColumnWeightData(60),
51         new ColumnWeightData(300)};
52     
53
54     LocationViewer(Composite parent) {
55         super(createTable(parent));
56
57         setContentProvider(new ArrayContentProvider());
58         setLabelProvider(new LocationLabelProvider());
59         setInput(new ArrayList JavaDoc());
60
61         createColumns();
62     }
63
64     /**
65      * Creates the table control.
66      */
67     private static Table createTable(Composite parent) {
68         return new Table(parent, SWT.H_SCROLL | SWT.V_SCROLL | SWT.MULTI | SWT.FULL_SELECTION);
69     }
70     
71     private void createColumns() {
72         TableLayout layout = new TableLayout();
73         getTable().setLayout(layout);
74         getTable().setHeaderVisible(true);
75         for (int i = 0; i < columnHeaders.length; i++) {
76             layout.addColumnData(columnLayouts[i]);
77             TableColumn tc = new TableColumn(getTable(), SWT.NONE,i);
78             tc.setResizable(columnLayouts[i].resizable);
79             tc.setText(columnHeaders[i]);
80         }
81     }
82
83     /**
84      * Attaches a contextmenu listener to the tree
85      */
86     void initContextMenu(IMenuListener menuListener, String JavaDoc popupId, IWorkbenchPartSite viewSite) {
87         MenuManager menuMgr= new MenuManager();
88         menuMgr.setRemoveAllWhenShown(true);
89         menuMgr.addMenuListener(menuListener);
90         Menu menu= menuMgr.createContextMenu(getControl());
91         getControl().setMenu(menu);
92         viewSite.registerContextMenu(popupId, menuMgr, this);
93     }
94     
95     /**
96      * Initializes and returns the Copy action for the location viewer.
97      */
98     LocationCopyAction initCopyAction(final IViewSite viewSite, final Clipboard clipboard) {
99         final LocationCopyAction copyAction= new LocationCopyAction(viewSite, clipboard, this);
100         
101         getTable().addFocusListener(new FocusListener() {
102             IAction fViewCopyHandler;
103             public void focusLost(FocusEvent e) {
104                 if (fViewCopyHandler != null) {
105                     IActionBars actionBars= viewSite.getActionBars();
106                     actionBars.setGlobalActionHandler(ActionFactory.COPY.getId(), fViewCopyHandler);
107                     actionBars.updateActionBars();
108                     fViewCopyHandler= null;
109                 }
110             }
111             
112             public void focusGained(FocusEvent e) {
113                 IActionBars actionBars= viewSite.getActionBars();
114                 fViewCopyHandler= actionBars.getGlobalActionHandler(ActionFactory.COPY.getId());
115                 actionBars.setGlobalActionHandler(ActionFactory.COPY.getId(), copyAction);
116                 actionBars.updateActionBars();
117             }
118         });
119         
120         return copyAction;
121     }
122
123     /**
124      *
125      */
126     void clearViewer() {
127         setInput(""); //$NON-NLS-1$
128 }
129 }
130
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