/*

 * Copyright (C) 2008, 2009, 2010 Apple Inc. All Rights Reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

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

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

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

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

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

 */

#include "config.h"

#include "AccessibilityController.h"

#include "AccessibilityUIElement.h"

#include <JavaScriptCore/JSRetainPtr.h>

// Static Value Getters

static JSValueRef getFocusedElementCallback(JSContextRef context, JSObjectRef thisObject, JSStringRef propertyName, JSValueRef* exception)

{

    AccessibilityController* controller = static_cast<AccessibilityController*>(JSObjectGetPrivate(thisObject));

    return AccessibilityUIElement::makeJSAccessibilityUIElement(context, controller->focusedElement());

}

static JSValueRef getRootElementCallback(JSContextRef context, JSObjectRef thisObject, JSStringRef propertyName, JSValueRef* exception)

{

    AccessibilityController* controller = static_cast<AccessibilityController*>(JSObjectGetPrivate(thisObject));

    return AccessibilityUIElement::makeJSAccessibilityUIElement(context, controller->rootElement());

}

// Object Creation

void AccessibilityController::makeWindowObject(JSContextRef context, JSObjectRef windowObject, JSValueRef* exception)

{

    JSRetainPtr<JSStringRef> accessibilityControllerStr(Adopt, JSStringCreateWithUTF8CString("accessibilityController"));

    JSClassRef classRef = getJSClass();

    JSValueRef accessibilityControllerObject = JSObjectMake(context, classRef, this);

    JSClassRelease(classRef);

    JSObjectSetProperty(context, windowObject, accessibilityControllerStr.get(), accessibilityControllerObject, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete, exception);

}

static JSValueRef logFocusEventsCallback(JSContextRef ctx, JSObjectRef, JSObjectRef thisObject, size_t, const JSValueRef[], JSValueRef*)

{

    AccessibilityController* controller = static_cast<AccessibilityController*>(JSObjectGetPrivate(thisObject));

    controller->setLogFocusEvents(true);

    return JSValueMakeUndefined(ctx);

}

static JSValueRef logValueChangeEventsCallback(JSContextRef ctx, JSObjectRef, JSObjectRef thisObject, size_t, const JSValueRef[], JSValueRef*)

{

    AccessibilityController* controller = static_cast<AccessibilityController*>(JSObjectGetPrivate(thisObject));

    controller->setLogValueChangeEvents(true);

    return JSValueMakeUndefined(ctx);

}

static JSValueRef logScrollingStartEventsCallback(JSContextRef ctx, JSObjectRef, JSObjectRef thisObject, size_t, const JSValueRef[], JSValueRef*)

{

    AccessibilityController* controller = static_cast<AccessibilityController*>(JSObjectGetPrivate(thisObject));

    controller->setLogScrollingStartEvents(true);

    return JSValueMakeUndefined(ctx);

}

static JSValueRef getElementAtPointCallback(JSContextRef context, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)

{

    int x = 0;

    int y = 0;

    if (argumentCount == 2) {

        x = JSValueToNumber(context, arguments[0], exception);

        y = JSValueToNumber(context, arguments[1], exception);

    }

    AccessibilityController* controller = static_cast<AccessibilityController*>(JSObjectGetPrivate(thisObject));

    return AccessibilityUIElement::makeJSAccessibilityUIElement(context, controller->elementAtPoint(x, y));

}

JSClassRef AccessibilityController::getJSClass()

{

    static JSStaticFunction staticFunctions[] = {

        { "logFocusEvents", logFocusEventsCallback, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },

        { "logValueChangeEvents", logValueChangeEventsCallback, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },

        { "logScrollingStartEvents", logScrollingStartEventsCallback, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },

        { "elementAtPoint", getElementAtPointCallback, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },

        { 0, 0, 0 }

    };

    static JSStaticValue staticValues[] = {

        { "focusedElement", getFocusedElementCallback, 0, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },

        { "rootElement", getRootElementCallback, 0, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },

        { 0, 0, 0, 0 }

    };

    static JSClassDefinition classDefinition = {

        0, kJSClassAttributeNone, "AccessibilityController", 0, staticValues, staticFunctions,

        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

    };

    return JSClassCreate(&classDefinition);

}

void AccessibilityController::resetToConsistentState()

{

    setLogFocusEvents(false);

    setLogValueChangeEvents(false);

    setLogScrollingStartEvents(false);

}