blob: 87ccd21ca9a77aa2d0a21a4cab521caeefa9c4a2 [file] [log] [blame]
/*
* Copyright (C) 2014 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. AND ITS CONTRIBUTORS ``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 ITS 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.
*/
#import "config.h"
#import "AccessibilityCommonMac.h"
#import "AccessibilityController.h"
#import "AccessibilityNotificationHandler.h"
#import "InjectedBundle.h"
#import "InjectedBundlePage.h"
#import <JavaScriptCore/JSStringRefCF.h>
#import <UIKit/UIAccessibility.h>
#import <WebKit/WKBundle.h>
#import <WebKit/WKBundlePage.h>
#import <WebKit/WKBundlePagePrivate.h>
namespace WTR {
bool AccessibilityController::addNotificationListener(JSValueRef functionCallback)
{
if (!functionCallback)
return false;
// Mac programmers should not be adding more than one global notification listener.
// Other platforms may be different.
if (m_globalNotificationHandler)
return false;
m_globalNotificationHandler = [[AccessibilityNotificationHandler alloc] init];
[m_globalNotificationHandler setCallback:functionCallback];
[m_globalNotificationHandler startObserving];
return true;
}
bool AccessibilityController::removeNotificationListener()
{
return false;
}
JSRetainPtr<JSStringRef> AccessibilityController::platformName()
{
return adopt(JSStringCreateWithUTF8CString("ios"));
}
void AccessibilityController::resetToConsistentState()
{
if (m_globalNotificationHandler)
removeNotificationListener();
}
static id findAccessibleObjectById(id obj, NSString *idAttribute)
{
id objIdAttribute = [obj accessibilityIdentifier];
if ([objIdAttribute isKindOfClass:[NSString class]] && [objIdAttribute isEqualToString:idAttribute])
return obj;
NSUInteger childrenCount = [obj accessibilityElementCount];
for (NSUInteger i = 0; i < childrenCount; ++i) {
id result = findAccessibleObjectById([obj accessibilityElementAtIndex:i], idAttribute);
if (result)
return result;
}
return nil;
}
RefPtr<AccessibilityUIElement> AccessibilityController::accessibleElementById(JSStringRef idAttribute)
{
WKBundlePageRef page = InjectedBundle::singleton().page()->page();
id root = static_cast<PlatformUIElement>(WKAccessibilityRootObject(page));
id result = findAccessibleObjectById(root, [NSString stringWithJSStringRef:idAttribute]);
if (result)
return AccessibilityUIElement::create(result);
return nullptr;
}
} // namespace WTR