blob: a982ad71c4d563ba19db70dbbfdd67dd3b7627aa (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
package org.openoffice.accessibility.awb.tree;
import com.sun.star.uno.UnoRuntime;
import com.sun.star.accessibility.XAccessible;
import com.sun.star.accessibility.XAccessibleContext;
/*
* This class is dynamic in the way that it does not contain any children
* until the node is going to be expanded. It also releases all children
* as soon as the node is collapsed again.
*/
class DynamicAccessibilityNode extends AccessibilityNode {
public DynamicAccessibilityNode(AccessibilityModel treeModel) {
super(treeModel);
}
// Populates the child list. Called by AccessibilityMode.treeWillExpand().
protected void populate() {
try {
XAccessibleContext xAC = getAccessibleContext();
if (xAC != null) {
int n = xAC.getAccessibleChildCount();
for (int i=0; i<n; i++) {
XAccessible xAccessible = xAC.getAccessibleChild(i);
AccessibilityNode node = treeModel.findNode(xAccessible);
if (node == null) {
node = treeModel.createNode(xAccessible);
}
if (node != null) {
// NOTE: do not send any tree notifications here !
add(node);
}
}
}
} catch (com.sun.star.lang.IndexOutOfBoundsException e) {
// This should never happen since we previously checked the child
// count.
// FIXME: error message
} catch (com.sun.star.uno.RuntimeException e) {
// FIXME: error message
}
}
// Clears the child list. Called by AccessibilityModel.treeCollapsed().
protected void clear() {
removeAllChildren();
}
/* This is called whenever the node is painted, no matter if collapsed
* or expanded. Making this a "life" value seems to be appropriate.
*/
public boolean isLeaf() {
try {
XAccessibleContext xAC = getAccessibleContext();
if (xAC != null) {
return xAC.getAccessibleChildCount() == 0;
}
return true;
} catch (com.sun.star.uno.RuntimeException e) {
return true;
}
}
}
|
