1 /*

     2  * Copyright (C) 2008, 2009, 2010 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 #ifndef AccessibilityController_h

    27 #define AccessibilityController_h

    28 

    29 #include "AccessibilityUIElement.h"

    30 #include <JavaScriptCore/JSObjectRef.h>

    31 #include <string>

    32 #include <wtf/HashMap.h>

    33 #include <wtf/Platform.h>

    34 #if PLATFORM(WIN)

    35 #include <windows.h>

    36 #endif

    37 

    38 class AccessibilityController {

    39 public:

    40     AccessibilityController();

    41     ~AccessibilityController();

    42 

    43     void makeWindowObject(JSContextRef context, JSObjectRef windowObject, JSValueRef* exception);

    44 

    45     // Controller Methods - platform-independent implementations

    46     AccessibilityUIElement rootElement();

    47     AccessibilityUIElement focusedElement();

    48     AccessibilityUIElement elementAtPoint(int x, int y);

    49 

    50     void setLogFocusEvents(bool);

    51     void setLogValueChangeEvents(bool);

    52     void setLogScrollingStartEvents(bool);

    53 

    54     void resetToConsistentState();

    55 

    56     void addNotificationListener(PlatformUIElement, JSObjectRef functionCallback);

    57     void notificationReceived(PlatformUIElement, const std::string& eventName);

    58 

    59 private:

    60     static JSClassRef getJSClass();

    61 

    62 #if PLATFORM(WIN)

    63     HWINEVENTHOOK m_focusEventHook;

    64     HWINEVENTHOOK m_valueChangeEventHook;

    65     HWINEVENTHOOK m_scrollingStartEventHook;

    66 

    67     HWINEVENTHOOK m_allEventsHook;

    68     HashMap<PlatformUIElement, JSObjectRef> m_notificationListeners;

    69 #endif

    70 };

    71 

    72 #endif // AccessibilityController_h