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
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
/*
* Copyright (C) 2009 Igalia S.L.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "FrameSelection.h"
#if HAVE(ACCESSIBILITY)
#include "AXObjectCache.h"
#include "Document.h"
#include "Frame.h"
#include "WebKitAccessibleWrapperAtk.h"
#if PLATFORM(EFL)
#include <glib.h>
#else
#include <gtk/gtk.h>
#endif
#include <wtf/RefPtr.h>
namespace WebCore {
static void emitTextSelectionChange(AccessibilityObject* object, VisibleSelection selection, int offset)
{
AtkObject* axObject = object->wrapper();
if (!axObject || !ATK_IS_TEXT(axObject))
return;
g_signal_emit_by_name(axObject, "text-caret-moved", offset);
if (selection.isRange())
g_signal_emit_by_name(axObject, "text-selection-changed");
}
static void maybeEmitTextFocusChange(PassRefPtr<AccessibilityObject> prpObject)
{
// This static variable is needed to keep track of the old object
// as per previous calls to this function, in order to properly
// decide whether to emit some signals or not.
DEFINE_STATIC_LOCAL(RefPtr<AccessibilityObject>, oldObject, ());
RefPtr<AccessibilityObject> object = prpObject;
// Ensure the oldObject belongs to the same document that the
// current object so further comparisons make sense. Otherwise,
// just reset oldObject to 0 so it won't be taken into account in
// the immediately following call to this function.
if (object && oldObject && oldObject->document() != object->document())
oldObject = 0;
AtkObject* axObject = object ? object->wrapper() : 0;
AtkObject* oldAxObject = oldObject ? oldObject->wrapper() : 0;
if (axObject != oldAxObject) {
if (oldAxObject && ATK_IS_TEXT(oldAxObject)) {
g_signal_emit_by_name(oldAxObject, "focus-event", false);
g_signal_emit_by_name(oldAxObject, "state-change", "focused", false);
}
if (axObject && ATK_IS_TEXT(axObject)) {
g_signal_emit_by_name(axObject, "focus-event", true);
g_signal_emit_by_name(axObject, "state-change", "focused", true);
}
}
// Update pointer to last focused object.
oldObject = object;
}
void FrameSelection::notifyAccessibilityForSelectionChange()
{
if (!AXObjectCache::accessibilityEnabled())
return;
if (!m_selection.start().isNotNull() || !m_selection.end().isNotNull())
return;
RenderObject* focusedNode = m_selection.end().containerNode()->renderer();
AXObjectCache* cache = m_frame->document()->existingAXObjectCache();
if (!cache)
return;
AccessibilityObject* accessibilityObject = cache->getOrCreate(focusedNode);
if (!accessibilityObject)
return;
int offset;
RefPtr<AccessibilityObject> object = objectFocusedAndCaretOffsetUnignored(accessibilityObject, offset);
if (!object)
return;
emitTextSelectionChange(object.get(), m_selection, offset);
maybeEmitTextFocusChange(object.release());
}
} // namespace WebCore
#endif // HAVE(ACCESSIBILITY)
|
