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comparison dwtx/jface/viewers/ColumnViewerEditorActivationStrategy.d @ 10:b6c35faf97c8

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Viewers
author Frank Benoit <benoit@tionex.de>
date Mon, 31 Mar 2008 00:47:19 +0200
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9:6c14e54dfc11 10:b6c35faf97c8
1 /*******************************************************************************
2 * Copyright (c) 2006, 2007 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 * Tom Schindl <tom.schindl@bestsolution.at> - initial API and implementation
11 * - fix for bug 187817
12 * Port to the D programming language:
13 * Frank Benoit <benoit@tionex.de>
14 *******************************************************************************/
15
16 module dwtx.jface.viewers.ColumnViewerEditorActivationStrategy;
17
18 import dwtx.jface.viewers.ViewerCell;
19 import dwtx.jface.viewers.ColumnViewer;
20 import dwtx.jface.viewers.ColumnViewerEditorActivationEvent;
21 import dwtx.jface.viewers.IStructuredSelection;
22
23 import dwt.events.KeyEvent;
24 import dwt.events.KeyListener;
25 import dwt.events.MouseEvent;
26
27 import dwt.dwthelper.utils;
28
29 /**
30 * This class is responsible to determine if a cell selection event is triggers
31 * an editor activation. Implementors can extend and overwrite to implement
32 * custom editing behavior
33 *
34 * @since 3.3
35 */
36 public class ColumnViewerEditorActivationStrategy {
37 private ColumnViewer viewer;
38
39 private KeyListener keyboardActivationListener;
40
41 /**
42 * @param viewer
43 * the viewer the editor support is attached to
44 */
45 public this(ColumnViewer viewer) {
46 this.viewer = viewer;
47 }
48
49 /**
50 * @param event
51 * the event triggering the action
52 * @return <code>true</code> if this event should open the editor
53 */
54 protected bool isEditorActivationEvent(
55 ColumnViewerEditorActivationEvent event) {
56 bool singleSelect = (cast(IStructuredSelection)viewer.getSelection()).size() is 1;
57 bool isLeftMouseSelect = event.eventType is ColumnViewerEditorActivationEvent.MOUSE_CLICK_SELECTION && (cast(MouseEvent)event.sourceEvent).button is 1;
58
59 return singleSelect && (isLeftMouseSelect
60 || event.eventType is ColumnViewerEditorActivationEvent.PROGRAMMATIC
61 || event.eventType is ColumnViewerEditorActivationEvent.TRAVERSAL);
62 }
63 package bool isEditorActivationEvent_package(ColumnViewerEditorActivationEvent event){
64 return isEditorActivationEvent(event);
65 }
66
67 /**
68 * @return the cell holding the current focus
69 */
70 private ViewerCell getFocusCell() {
71 return viewer.getColumnViewerEditor().getFocusCell();
72 }
73
74 /**
75 * @return the viewer
76 */
77 public ColumnViewer getViewer() {
78 return viewer;
79 }
80
81 /**
82 * Enable activation of cell editors by keyboard
83 *
84 * @param enable
85 * <code>true</code> to enable
86 */
87 public void setEnableEditorActivationWithKeyboard(bool enable) {
88 if (enable) {
89 if (keyboardActivationListener is null) {
90 keyboardActivationListener = new class KeyListener {
91
92 public void keyPressed(KeyEvent e) {
93 ViewerCell cell = getFocusCell();
94
95 if (cell !is null) {
96 viewer
97 .triggerEditorActivationEvent_package(new ColumnViewerEditorActivationEvent(
98 cell, e));
99 }
100 }
101
102 public void keyReleased(KeyEvent e) {
103
104 }
105
106 };
107 viewer.getControl().addKeyListener(keyboardActivationListener);
108 }
109 } else {
110 if (keyboardActivationListener !is null) {
111 viewer.getControl().removeKeyListener(
112 keyboardActivationListener);
113 keyboardActivationListener = null;
114 }
115 }
116 }
117
118 }