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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qcocoaaccessibilityelement.h"
#include "qcocoaaccessibility.h"
#include "qcocoahelpers.h"
#include <QAccessible>
#include "QAccessibleActionInterface"
#import <AppKit/NSAccessibility.h>
static QAccessibleInterface *acast(void *ptr)
{
return reinterpret_cast<QAccessibleInterface *>(ptr);
}
@implementation QCocoaAccessibleElement
- (id)initWithIndex:(int)aIndex parent:(id)aParent accessibleInterface:(void *)anQAccessibleInterface
{
self = [super init];
if (self) {
index = aIndex;
accessibleInterface = anQAccessibleInterface;
role = QCocoaAccessible::macRole(acast(accessibleInterface)->role());
parent = aParent;
}
return self;
}
+ (QCocoaAccessibleElement *)elementWithIndex:(int)aIndex parent:(id)aParent accessibleInterface:(void *)anQAccessibleInterface
{
return [[[self alloc] initWithIndex:aIndex parent:aParent accessibleInterface:anQAccessibleInterface] autorelease];
}
- (void)dealloc {
[super dealloc];
}
- (BOOL)isEqual:(id)object {
if ([object isKindOfClass:[QCocoaAccessibleElement class]]) {
QCocoaAccessibleElement *other = object;
return (index == other->index) && [role isEqualToString:other->role] && [parent isEqual:other->parent];
} else
return NO;
}
- (NSUInteger)hash {
return [parent hash] + index;
}
- (NSUInteger)index {
return index;
}
//
// accessibility protocol
//
// attributes
- (NSArray *)accessibilityAttributeNames {
static NSArray *attributes = nil;
if (attributes == nil) {
attributes = [[NSArray alloc] initWithObjects:
NSAccessibilityRoleAttribute,
NSAccessibilityRoleDescriptionAttribute,
NSAccessibilityChildrenAttribute,
NSAccessibilityFocusedAttribute,
NSAccessibilityParentAttribute,
NSAccessibilityWindowAttribute,
NSAccessibilityTopLevelUIElementAttribute,
NSAccessibilityPositionAttribute,
NSAccessibilitySizeAttribute,
NSAccessibilityDescriptionAttribute,
nil];
}
return attributes;
}
- (id)accessibilityAttributeValue:(NSString *)attribute {
if ([attribute isEqualToString:NSAccessibilityRoleAttribute]) {
return role;
} else if ([attribute isEqualToString:NSAccessibilityRoleDescriptionAttribute]) {
return NSAccessibilityRoleDescription(role, nil);
} else if ([attribute isEqualToString:NSAccessibilityChildrenAttribute]) {
int numKids = acast(accessibleInterface)->childCount();
NSMutableArray *kids = [NSMutableArray arrayWithCapacity:numKids];
for (int i = 0; i < numKids; ++i) {
QAccessibleInterface *childInterface = acast(accessibleInterface)->child(i);
[kids addObject:[QCocoaAccessibleElement elementWithIndex:i parent:self accessibleInterface:(void*)childInterface]];
}
return NSAccessibilityUnignoredChildren(kids);
} else if ([attribute isEqualToString:NSAccessibilityFocusedAttribute]) {
// Just check if the app thinks we're focused.
id focusedElement = [NSApp accessibilityAttributeValue:NSAccessibilityFocusedUIElementAttribute];
return [NSNumber numberWithBool:[focusedElement isEqual:self]];
} else if ([attribute isEqualToString:NSAccessibilityParentAttribute]) {
return NSAccessibilityUnignoredAncestor(parent);
} else if ([attribute isEqualToString:NSAccessibilityWindowAttribute]) {
// We're in the same window as our parent.
return [parent accessibilityAttributeValue:NSAccessibilityWindowAttribute];
} else if ([attribute isEqualToString:NSAccessibilityTopLevelUIElementAttribute]) {
// We're in the same top level element as our parent.
return [parent accessibilityAttributeValue:NSAccessibilityTopLevelUIElementAttribute];
} else if ([attribute isEqualToString:NSAccessibilityPositionAttribute]) {
QPoint qtPosition = acast(accessibleInterface)->rect().topLeft();
QSize qtSize = acast(accessibleInterface)->rect().size();
return [NSValue valueWithPoint: NSMakePoint(qtPosition.x(), qt_mac_flipYCoordinate(qtPosition.y() + qtSize.height()))];
} else if ([attribute isEqualToString:NSAccessibilitySizeAttribute]) {
QSize qtSize = acast(accessibleInterface)->rect().size();
return [NSValue valueWithSize: NSMakeSize(qtSize.width(), qtSize.height())];
} else if ([attribute isEqualToString:NSAccessibilityDescriptionAttribute]) {
return qt_mac_QStringToNSString(acast(accessibleInterface)->text(QAccessible::Name));
}
return nil;
}
- (BOOL)accessibilityIsAttributeSettable:(NSString *)attribute {
if ([attribute isEqualToString:NSAccessibilityFocusedAttribute]) {
return NO; // YES to handle keyboard input
} else {
return NO;
}
}
- (void)accessibilitySetValue:(id)value forAttribute:(NSString *)attribute {
Q_UNUSED(value);
if ([attribute isEqualToString:NSAccessibilityFocusedAttribute]) {
}
}
// actions
- (NSArray *)accessibilityActionNames {
NSMutableArray * nsActions = [NSMutableArray new];
QAccessibleActionInterface *actionInterface = acast(accessibleInterface)->actionInterface();
if (actionInterface) {
QStringList supportedActionNames = actionInterface->actionNames();
foreach (const QString &qtAction, supportedActionNames) {
NSString *nsAction = QCocoaAccessible::getTranslatedAction(qtAction);
if (nsAction)
[nsActions addObject : nsAction];
}
}
return nsActions;
}
- (NSString *)accessibilityActionDescription:(NSString *)action {
QAccessibleActionInterface *actionInterface = acast(accessibleInterface)->actionInterface();
if (actionInterface) {
QString qtAction = QCocoaAccessible::translateAction(action);
QString description = actionInterface->localizedActionDescription(qtAction);
if (!description.isEmpty())
return qt_mac_QStringToNSString(description);
}
return NSAccessibilityActionDescription(action);
}
- (void)accessibilityPerformAction:(NSString *)action {
QAccessibleActionInterface *actionInterface = acast(accessibleInterface)->actionInterface();
if (actionInterface) {
QString qtAction = QCocoaAccessible::translateAction(action);
actionInterface->doAction(QAccessibleActionInterface::pressAction());
}
}
// misc
- (BOOL)accessibilityIsIgnored {
return QCocoaAccessible::shouldBeIgnrored(acast(accessibleInterface));
}
- (id)accessibilityHitTest:(NSPoint)point {
if (!accessibleInterface)
return NSAccessibilityUnignoredAncestor(self);
QAccessibleInterface *childInterface = acast(accessibleInterface)->childAt(point.x, qt_mac_flipYCoordinate(point.y));
// No child found, meaning we hit this element.
if (!childInterface) {
return NSAccessibilityUnignoredAncestor(self);
}
// hit a child, forward to child accessible interface.
int childIndex = acast(accessibleInterface)->indexOfChild(childInterface);
QCocoaAccessibleElement *accessibleElement = [QCocoaAccessibleElement elementWithIndex:childIndex parent:self accessibleInterface: childInterface];
return [accessibleElement accessibilityHitTest:point];
}
- (id)accessibilityFocusedUIElement {
return NSAccessibilityUnignoredAncestor(self);
}
@end
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