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
|
// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_ACCESSIBILITY_PLATFORM_ATK_UTIL_AURALINUX_H_
#define UI_ACCESSIBILITY_PLATFORM_ATK_UTIL_AURALINUX_H_
#include <atk/atk.h>
#include "base/component_export.h"
#include "base/memory/singleton.h"
#include "ui/accessibility/platform/ax_platform_node_auralinux.h"
namespace ui {
// These values are duplicates of the GDK values that can be found in
// <gdk/gdktypes.h>. ATK expects the GDK values, but we don't want to depend on
// GDK here.
typedef enum {
kAtkShiftMask = 1 << 0,
kAtkLockMask = 1 << 1,
kAtkControlMask = 1 << 2,
kAtkMod1Mask = 1 << 3,
kAtkMod2Mask = 1 << 4,
kAtkMod3Mask = 1 << 5,
kAtkMod4Mask = 1 << 6,
KAtkMod5Mask = 1 << 7,
} AtkKeyModifierMask;
enum DiscardAtkKeyEvent { Discard, Retain };
// This singleton class initializes ATK (accessibility toolkit) and
// registers an implementation of the AtkUtil class, a global class that
// every accessible application needs to register once.
class COMPONENT_EXPORT(AX_PLATFORM) AtkUtilAuraLinux {
public:
// Get the single instance of this class.
static AtkUtilAuraLinux* GetInstance();
AtkUtilAuraLinux() = default;
AtkUtilAuraLinux(const AtkUtilAuraLinux&) = delete;
AtkUtilAuraLinux& operator=(const AtkUtilAuraLinux&) = delete;
void InitializeAsync();
void InitializeForTesting();
bool IsAtSpiReady();
void SetAtSpiReady(bool ready);
// Nodes with postponed events will get the function RunPostponedEvents()
// called as soon as AT-SPI is detected to be ready
void PostponeEventsFor(AXPlatformNodeAuraLinux* node);
void CancelPostponedEventsFor(AXPlatformNodeAuraLinux* node);
static DiscardAtkKeyEvent HandleAtkKeyEvent(AtkKeyEventStruct* key_event);
private:
friend struct base::DefaultSingletonTraits<AtkUtilAuraLinux>;
bool ShouldEnableAccessibility();
void PlatformInitializeAsync();
bool at_spi_ready_ = false;
};
} // namespace ui
#endif // UI_ACCESSIBILITY_PLATFORM_ATK_UTIL_AURALINUX_H_
|
