1 /*

     2  * Copyright (C) 2010 Google 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 are

     6  * met:

     7  *

     8  *     * Redistributions of source code must retain the above copyright

     9  * notice, this list of conditions and the following disclaimer.

    10  *     * Redistributions in binary form must reproduce the above

    11  * copyright notice, this list of conditions and the following disclaimer

    12  * in the documentation and/or other materials provided with the

    13  * distribution.

    14  *     * Neither the name of Google Inc. nor the names of its

    15  * contributors may be used to endorse or promote products derived from

    16  * this software without specific prior written permission.

    17  *

    18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

    19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

    20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

    21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

    22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

    23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

    24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

    25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

    26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

    28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    29  */

    30 

    31 #include "config.h"

    32 #include "AccessibilityController.h"

    33 

    34 #include "TestShell.h"

    35 #include "public/WebAccessibilityCache.h"

    36 #include "public/WebAccessibilityObject.h"

    37 #include "public/WebFrame.h"

    38 #include "public/WebString.h"

    39 #include "public/WebView.h"

    40 

    41 using namespace WebKit;

    42 

    43 AccessibilityController::AccessibilityController(TestShell* shell)

    44     : m_shell(shell)

    45 {

    46 

    47     bindMethod("logFocusEvents",

    48         &AccessibilityController::logFocusEventsCallback);

    49     bindMethod("logScrollingStartEvents",

    50         &AccessibilityController::logScrollingStartEventsCallback);

    51 

    52     bindProperty("focusedElement",

    53         &AccessibilityController::focusedElementGetterCallback);

    54     bindProperty("rootElement",

    55         &AccessibilityController::rootElementGetterCallback);

    56 

    57     bindFallbackMethod(&AccessibilityController::fallbackCallback);

    58 }

    59 

    60 void AccessibilityController::bindToJavascript(WebFrame* frame, const WebString& classname)

    61 {

    62     WebAccessibilityCache::enableAccessibility();

    63     CppBoundClass::bindToJavascript(frame, classname);

    64 }

    65 

    66 void AccessibilityController::reset()

    67 {

    68     m_rootElement = WebAccessibilityObject();

    69     m_focusedElement = WebAccessibilityObject();

    70     m_elements.clear();

    71 }

    72 

    73 void AccessibilityController::setFocusedElement(const WebAccessibilityObject& focusedElement)

    74 {

    75     m_focusedElement = focusedElement;

    76 }

    77 

    78 AccessibilityUIElement* AccessibilityController::getFocusedElement()

    79 {

    80     if (m_focusedElement.isNull())

    81         m_focusedElement = m_shell->webView()->accessibilityObject();

    82     return m_elements.create(m_focusedElement);

    83 }

    84 

    85 AccessibilityUIElement* AccessibilityController::getRootElement()

    86 {

    87     if (m_rootElement.isNull())

    88         m_rootElement = m_shell->webView()->accessibilityObject();

    89     return m_elements.createRoot(m_rootElement);

    90 }

    91 

    92 void AccessibilityController::logFocusEventsCallback(const CppArgumentList&, CppVariant* result)

    93 {

    94     // As of r49031, this is not being used upstream.

    95     result->setNull();

    96 }

    97 

    98 void AccessibilityController::logScrollingStartEventsCallback(const CppArgumentList&, CppVariant* result)

    99 {

   100     // As of r49031, this is not being used upstream.

   101     result->setNull();

   102 }

   103 

   104 void AccessibilityController::focusedElementGetterCallback(CppVariant* result)

   105 {

   106     result->set(*(getFocusedElement()->getAsCppVariant()));

   107 }

   108 

   109 void AccessibilityController::rootElementGetterCallback(CppVariant* result)

   110 {

   111     result->set(*(getRootElement()->getAsCppVariant()));

   112 }

   113 

   114 void AccessibilityController::fallbackCallback(const CppArgumentList&, CppVariant* result)

   115 {

   116     printf("CONSOLE MESSAGE: JavaScript ERROR: unknown method called on "

   117            "AccessibilityController\n");

   118     result->setNull();

   119 }