1/*
2 * Copyright (C) 2011 Apple Inc. All Rights Reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#if HAVE(ACCESSIBILITY)
29
30#include "AccessibilityUIElement.h"
31#include "JSWrappable.h"
32#include <JavaScriptCore/JSObjectRef.h>
33#include <wtf/Platform.h>
34#if PLATFORM(GTK)
35#include "AccessibilityNotificationHandlerAtk.h"
36#endif
37
38namespace WTR {
39
40class AccessibilityController : public JSWrappable {
41public:
42 static Ref<AccessibilityController> create();
43 ~AccessibilityController();
44
45 void makeWindowObject(JSContextRef, JSObjectRef windowObject, JSValueRef* exception);
46 virtual JSClassRef wrapperClass();
47
48 // Enhanced accessibility.
49 void enableEnhancedAccessibility(bool);
50 bool enhancedAccessibilityEnabled();
51
52 JSRetainPtr<JSStringRef> platformName();
53
54 // Controller Methods - platform-independent implementations.
55 Ref<AccessibilityUIElement> rootElement();
56 Ref<AccessibilityUIElement> focusedElement();
57 RefPtr<AccessibilityUIElement> elementAtPoint(int x, int y);
58 RefPtr<AccessibilityUIElement> accessibleElementById(JSStringRef idAttribute);
59
60 bool addNotificationListener(JSValueRef functionCallback);
61 bool removeNotificationListener();
62
63 // Here for consistency with DRT. Not implemented because they don't do anything on the Mac.
64 void logFocusEvents() { }
65 void logValueChangeEvents() { }
66 void logScrollingStartEvents() { }
67 void logAccessibilityEvents() { };
68
69 void resetToConsistentState();
70
71private:
72 AccessibilityController();
73
74#if PLATFORM(COCOA)
75 RetainPtr<NotificationHandler> m_globalNotificationHandler;
76#elif PLATFORM(GTK) || PLATFORM(EFL)
77 RefPtr<AccessibilityNotificationHandler> m_globalNotificationHandler;
78#endif
79};
80
81} // namespace WTR
82
83#endif // HAVE(ACCESSIBILITY)
84