/*
 * Copyright (C) 2011 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 "AccessibilityUIElement.h"

#include "JSAccessibilityUIElement.h"

namespace WTR {

Ref<AccessibilityUIElement> AccessibilityUIElement::create(PlatformUIElement uiElement)
{
    RELEASE_ASSERT(uiElement);
    return adoptRef(*new AccessibilityUIElement(uiElement));
}

Ref<AccessibilityUIElement> AccessibilityUIElement::create(const AccessibilityUIElement& uiElement)
{
    return adoptRef(*new AccessibilityUIElement(uiElement));
}

JSClassRef AccessibilityUIElement::wrapperClass()
{
    return JSAccessibilityUIElement::accessibilityUIElementClass();
}

// Implementation

bool AccessibilityUIElement::isValid() const
{
#if PLATFORM(COCOA)
    return m_element.getAutoreleased();
#else
    return m_element;
#endif
}

// iOS specific methods
#if !PLATFORM(IOS_FAMILY)
JSRetainPtr<JSStringRef> AccessibilityUIElement::identifier() { return nullptr; }
JSRetainPtr<JSStringRef> AccessibilityUIElement::traits() { return nullptr; }
int AccessibilityUIElement::elementTextPosition() { return 0; }
int AccessibilityUIElement::elementTextLength() { return 0; }
JSRetainPtr<JSStringRef> AccessibilityUIElement::stringForSelection() { return nullptr; }
void AccessibilityUIElement::increaseTextSelection() { }
void AccessibilityUIElement::decreaseTextSelection() { }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::linkedElement() { return nullptr; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::headerElementAtIndex(unsigned) { return nullptr; }
void AccessibilityUIElement::assistiveTechnologySimulatedFocus() { return; }
bool AccessibilityUIElement::scrollPageUp() { return false; }
bool AccessibilityUIElement::scrollPageDown() { return false; }
bool AccessibilityUIElement::scrollPageLeft() { return false; }
bool AccessibilityUIElement::scrollPageRight() { return false; }
bool AccessibilityUIElement::hasTextEntryTrait() { return false; }
bool AccessibilityUIElement::hasTabBarTrait() { return false; }
bool AccessibilityUIElement::hasMenuItemTrait() { return false; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::fieldsetAncestorElement() { return nullptr; }
bool AccessibilityUIElement::isSearchField() const { return false; }
bool AccessibilityUIElement::isSwitch() const { return false; }
bool AccessibilityUIElement::isTextArea() const { return false; }
RefPtr<AccessibilityTextMarkerRange> AccessibilityUIElement::textMarkerRangeMatchesTextNearMarkers(JSStringRef, AccessibilityTextMarker*, AccessibilityTextMarker*) { return nullptr; }
JSRetainPtr<JSStringRef> AccessibilityUIElement::attributedStringForElement() { return nullptr; }
bool AccessibilityUIElement::isInLandmark() const { return false; }
bool AccessibilityUIElement::isInList() const { return false; }
bool AccessibilityUIElement::isMarkAnnotation() const { return false; }
bool AccessibilityUIElement::supportsExpanded() const { return false; }
#endif

// Unsupported methods on various platforms. As they're implemented on other platforms this list should be modified.

#if PLATFORM(COCOA)

JSRetainPtr<JSStringRef> AccessibilityUIElement::characterAtOffset(int) { return nullptr; }
JSRetainPtr<JSStringRef> AccessibilityUIElement::wordAtOffset(int) { return nullptr; }
JSRetainPtr<JSStringRef> AccessibilityUIElement::lineAtOffset(int) { return nullptr; }
JSRetainPtr<JSStringRef> AccessibilityUIElement::sentenceAtOffset(int) { return nullptr; }

unsigned AccessibilityUIElement::childrenCount()
{
    return getChildren().size();
}

RefPtr<AccessibilityUIElement> AccessibilityUIElement::childAtIndex(unsigned index)
{
    auto children = getChildrenInRange(index, 1);
    return children.size() == 1 ? children[0] : nullptr;
}

#endif // PLATFORM(COCOA)

#if !PLATFORM(MAC)
bool AccessibilityUIElement::isTextMarkerNull(AccessibilityTextMarker* marker) { return !isTextMarkerValid(marker); }
bool AccessibilityUIElement::isTextMarkerRangeValid(AccessibilityTextMarkerRange*) { return false; }
RefPtr<AccessibilityTextMarkerRange> AccessibilityUIElement::rightLineTextMarkerRangeForTextMarker(AccessibilityTextMarker*) { return nullptr; }
RefPtr<AccessibilityTextMarkerRange> AccessibilityUIElement::leftLineTextMarkerRangeForTextMarker(AccessibilityTextMarker*) { return nullptr; }
RefPtr<AccessibilityTextMarker> AccessibilityUIElement::previousLineStartTextMarkerForTextMarker(AccessibilityTextMarker*) { return nullptr; }
RefPtr<AccessibilityTextMarker> AccessibilityUIElement::nextLineEndTextMarkerForTextMarker(AccessibilityTextMarker*) { return nullptr; }
int AccessibilityUIElement::lineIndexForTextMarker(AccessibilityTextMarker*) const { return -1; }
RefPtr<AccessibilityTextMarkerRange> AccessibilityUIElement::styleTextMarkerRangeForTextMarker(AccessibilityTextMarker*) { return nullptr; }
RefPtr<AccessibilityTextMarkerRange> AccessibilityUIElement::textMarkerRangeForUnorderedMarkers(AccessibilityTextMarker*, AccessibilityTextMarker*) { return nullptr; }
RefPtr<AccessibilityTextMarkerRange> AccessibilityUIElement::textMarkerRangeForRange(unsigned, unsigned) { return nullptr; }
RefPtr<AccessibilityTextMarkerRange> AccessibilityUIElement::selectedTextMarkerRange() { return nullptr; }
void AccessibilityUIElement::resetSelectedTextMarkerRange() { }
RefPtr<AccessibilityTextMarkerRange> AccessibilityUIElement::textInputMarkedTextMarkerRange() const { return nullptr; }
JSRetainPtr<JSStringRef> AccessibilityUIElement::textMarkerDebugDescription(AccessibilityTextMarker*) { return nullptr; }
JSRetainPtr<JSStringRef> AccessibilityUIElement::textMarkerRangeDebugDescription(AccessibilityTextMarkerRange*) { return nullptr; }
void AccessibilityUIElement::setBoolAttributeValue(JSStringRef, bool) { }
void AccessibilityUIElement::setValue(JSStringRef) { }
JSValueRef AccessibilityUIElement::searchTextWithCriteria(JSContextRef, JSValueRef, JSStringRef, JSStringRef) { return nullptr; }
JSValueRef AccessibilityUIElement::performTextOperation(JSContextRef, JSStringRef, JSValueRef, JSValueRef, bool) { return nullptr; }
bool AccessibilityUIElement::isOnScreen() const { return true; }
JSValueRef AccessibilityUIElement::mathRootRadicand(JSContextRef) { return { }; }
unsigned AccessibilityUIElement::numberOfCharacters() const { return 0; }
JSValueRef AccessibilityUIElement::columns(JSContextRef) { return { }; }
JSRetainPtr<JSStringRef> AccessibilityUIElement::dateValue() { return nullptr; }
RefPtr<AccessibilityTextMarkerRange> AccessibilityUIElement::textMarkerRangeForLine(long) { return nullptr; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::elementAtPointWithRemoteElement(int x, int y) { return nullptr; }
void AccessibilityUIElement::elementAtPointResolvingRemoteFrame(JSContextRef context, int x, int y, JSValueRef jsCallback) { }
bool AccessibilityUIElement::isRemoteFrame() const { return false; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::childAtIndexWithRemoteElement(unsigned) { return nullptr; }
#endif // !PLATFORM(MAC)

#if !PLATFORM(COCOA)
RefPtr<AccessibilityUIElement> AccessibilityUIElement::focusedElement() const { return nullptr; }
JSRetainPtr<JSStringRef> AccessibilityUIElement::customContent() const { return nullptr; }

JSRetainPtr<JSStringRef> AccessibilityUIElement::brailleLabel() const { return nullptr; }
JSRetainPtr<JSStringRef> AccessibilityUIElement::brailleRoleDescription() const { return nullptr; }

bool AccessibilityUIElement::isInDescriptionListDetail() const { return false; }
bool AccessibilityUIElement::isInDescriptionListTerm() const { return false; }
bool AccessibilityUIElement::isInCell() const { return false; }
bool AccessibilityUIElement::isInTable() const { return false; }

JSRetainPtr<JSStringRef> AccessibilityUIElement::lineRectsAndText() const { return { }; }
RefPtr<AccessibilityTextMarkerRange> AccessibilityUIElement::leftWordTextMarkerRangeForTextMarker(AccessibilityTextMarker*) { return nullptr; }
RefPtr<AccessibilityTextMarkerRange> AccessibilityUIElement::rightWordTextMarkerRangeForTextMarker(AccessibilityTextMarker*) { return nullptr; }
RefPtr<AccessibilityTextMarker> AccessibilityUIElement::previousWordStartTextMarkerForTextMarker(AccessibilityTextMarker*) { return nullptr; }
RefPtr<AccessibilityTextMarker> AccessibilityUIElement::nextWordEndTextMarkerForTextMarker(AccessibilityTextMarker*) { return nullptr; }
RefPtr<AccessibilityTextMarkerRange> AccessibilityUIElement::paragraphTextMarkerRangeForTextMarker(AccessibilityTextMarker*) { return nullptr; }
RefPtr<AccessibilityTextMarker> AccessibilityUIElement::nextParagraphEndTextMarkerForTextMarker(AccessibilityTextMarker*) { return nullptr; }
RefPtr<AccessibilityTextMarker> AccessibilityUIElement::previousParagraphStartTextMarkerForTextMarker(AccessibilityTextMarker*) { return nullptr; }
RefPtr<AccessibilityTextMarkerRange> AccessibilityUIElement::sentenceTextMarkerRangeForTextMarker(AccessibilityTextMarker*) { return nullptr; }
RefPtr<AccessibilityTextMarker> AccessibilityUIElement::nextSentenceEndTextMarkerForTextMarker(AccessibilityTextMarker*) { return nullptr; }
RefPtr<AccessibilityTextMarker> AccessibilityUIElement::previousSentenceStartTextMarkerForTextMarker(AccessibilityTextMarker*) { return nullptr; }
RefPtr<AccessibilityTextMarkerRange> AccessibilityUIElement::textMarkerRangeForSearchPredicate(JSContextRef, AccessibilityTextMarkerRange*, bool, JSValueRef, JSStringRef, bool, bool) { return nullptr; }
RefPtr<AccessibilityTextMarkerRange> AccessibilityUIElement::misspellingTextMarkerRange(AccessibilityTextMarkerRange*, bool) { return nullptr; }
bool AccessibilityUIElement::dismiss() { return false; }
JSValueRef AccessibilityUIElement::children(JSContextRef) { return { }; }
JSValueRef AccessibilityUIElement::imageOverlayElements(JSContextRef) { return { }; }
JSRetainPtr<JSStringRef> AccessibilityUIElement::embeddedImageDescription() const { return nullptr; }
#endif // !PLATFORM(COCOA)

#if PLATFORM(IOS_FAMILY)
RefPtr<AccessibilityUIElement> AccessibilityUIElement::controllerElementAtIndex(unsigned) { return nullptr; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::ariaDescribedByElementAtIndex(unsigned) { return nullptr; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::descriptionForElementAtIndex(unsigned) { return nullptr; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::detailsForElementAtIndex(unsigned) { return nullptr; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::errorMessageForElementAtIndex(unsigned) { return nullptr; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::flowFromElementAtIndex(unsigned) { return nullptr; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::ariaLabelledByElementAtIndex(unsigned) { return nullptr; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::labelForElementAtIndex(unsigned) { return nullptr; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::ownerElementAtIndex(unsigned) { return nullptr; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::activeElement() const { return nullptr; }
JSValueRef AccessibilityUIElement::selectedChildren(JSContextRef) { return { }; }
#endif // PLATFORM(IOS_FAMILY)

#if PLATFORM(WIN) || PLATFORM(PLAYSTATION)
RefPtr<AccessibilityUIElement> AccessibilityUIElement::controllerElementAtIndex(unsigned) { return nullptr; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::ariaDescribedByElementAtIndex(unsigned) { return nullptr; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::descriptionForElementAtIndex(unsigned) { return nullptr; }
JSValueRef AccessibilityUIElement::detailsElements(JSContextRef) { return nullptr; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::ariaDetailsElementAtIndex(unsigned) { return nullptr; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::detailsForElementAtIndex(unsigned) { return nullptr; }
JSValueRef AccessibilityUIElement::errorMessageElements(JSContextRef) { return nullptr; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::ariaErrorMessageElementAtIndex(unsigned) { return nullptr; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::errorMessageForElementAtIndex(unsigned) { return nullptr; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::flowFromElementAtIndex(unsigned) { return nullptr; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::ariaLabelledByElementAtIndex(unsigned) { return nullptr; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::labelForElementAtIndex(unsigned) { return nullptr; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::ownerElementAtIndex(unsigned) { return nullptr; }
RefPtr<AccessibilityUIElement> AccessibilityUIElement::activeElement() const { return nullptr; }
JSValueRef AccessibilityUIElement::selectedChildren(JSContextRef) { return { }; }
#endif // PLATFORM(WIN) || PLATFORM(PLAYSTATION)

} // namespace WTR