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/*
* 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.
*/
#import "config.h"
#import "DumpRenderTree.h"
#import "AccessibilityController.h"
#import "AccessibilityCommonMac.h"
#import "AccessibilityNotificationHandler.h"
#import "AccessibilityUIElement.h"
#import <AppKit/NSColor.h>
#import <Foundation/Foundation.h>
#import <JavaScriptCore/JSStringRef.h>
#import <JavaScriptCore/JSStringRefCF.h>
#import <WebKit/WebFrame.h>
#import <WebKit/WebFramePrivate.h>
#import <WebKit/WebHTMLView.h>
AccessibilityController::AccessibilityController()
{
}
AccessibilityController::~AccessibilityController()
{
// The notification handler should be nil because removeNotificationListener() should have been called in the test.
ASSERT(!m_globalNotificationHandler);
}
AccessibilityUIElement AccessibilityController::elementAtPoint(int x, int y)
{
id accessibilityObject = [[[mainFrame frameView] documentView] accessibilityHitTest:NSMakePoint(x, y)];
return AccessibilityUIElement(accessibilityObject);
}
AccessibilityUIElement AccessibilityController::focusedElement()
{
id accessibilityObject = [[mainFrame accessibilityRoot] accessibilityFocusedUIElement];
return AccessibilityUIElement(accessibilityObject);
}
AccessibilityUIElement AccessibilityController::rootElement()
{
// FIXME: we could do some caching here.
// Layout tests expect that the root element will be the scroll area
// containing the web area object. That will be the parent of the accessibilityRoot on WK1.
id accessibilityObject = [[mainFrame accessibilityRoot] accessibilityAttributeValue:NSAccessibilityParentAttribute];
return AccessibilityUIElement(accessibilityObject);
}
static id findAccessibleObjectById(id obj, NSString *idAttribute)
{
BEGIN_AX_OBJC_EXCEPTIONS
id objIdAttribute = [obj accessibilityAttributeValue:@"AXDRTElementIdAttribute"];
if ([objIdAttribute isKindOfClass:[NSString class]] && [objIdAttribute isEqualToString:idAttribute])
return obj;
END_AX_OBJC_EXCEPTIONS
BEGIN_AX_OBJC_EXCEPTIONS
NSArray *children = [obj accessibilityAttributeValue:NSAccessibilityChildrenAttribute];
NSUInteger childrenCount = [children count];
for (NSUInteger i = 0; i < childrenCount; ++i) {
id result = findAccessibleObjectById([children objectAtIndex:i], idAttribute);
if (result)
return result;
}
END_AX_OBJC_EXCEPTIONS
return 0;
}
AccessibilityUIElement AccessibilityController::accessibleElementById(JSStringRef idAttributeRef)
{
NSString *idAttribute = [NSString stringWithJSStringRef:idAttributeRef];
id root = [[mainFrame accessibilityRoot] accessibilityAttributeValue:NSAccessibilityParentAttribute];
id result = findAccessibleObjectById(root, idAttribute);
if (result)
return AccessibilityUIElement(result);
return 0;
}
void AccessibilityController::setLogFocusEvents(bool)
{
}
void AccessibilityController::setLogScrollingStartEvents(bool)
{
}
void AccessibilityController::setLogValueChangeEvents(bool)
{
}
void AccessibilityController::setLogAccessibilityEvents(bool)
{
}
bool AccessibilityController::addNotificationListener(JSObjectRef 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.get() setCallback:functionCallback];
[m_globalNotificationHandler.get() startObserving];
return true;
}
void AccessibilityController::removeNotificationListener()
{
// Mac programmers should not be trying to remove a listener that's already removed.
ASSERT(m_globalNotificationHandler);
m_globalNotificationHandler.clear();
}
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