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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "quiaccessibilityelement.h"
#if QT_CONFIG(accessibility)
#include "private/qaccessiblecache_p.h"
#include "private/qcore_mac_p.h"
#include "uistrings_p.h"
#include "qioswindow.h"
QT_NAMESPACE_ALIAS_OBJC_CLASS(QMacAccessibilityElement);
@implementation QMacAccessibilityElement
- (instancetype)initWithId:(QAccessible::Id)anId withAccessibilityContainer:(id)view
{
Q_ASSERT((int)anId < 0);
self = [super initWithAccessibilityContainer:view];
if (self)
_axid = anId;
return self;
}
+ (instancetype)elementWithId:(QAccessible::Id)anId
{
Q_ASSERT(anId);
if (!anId)
return nil;
QAccessibleCache *cache = QAccessibleCache::instance();
QMacAccessibilityElement *element = cache->elementForId(anId);
if (!element) {
auto *a11yInterface = QAccessible::accessibleInterface(anId);
Q_ASSERT(a11yInterface);
auto *window = a11yInterface->window();
if (window && window->handle()) {
auto *platformWindow = static_cast<QIOSWindow*>(window->handle());
element = [[self alloc] initWithId:anId withAccessibilityContainer:platformWindow->view()];
cache->insertElement(anId, element);
} else {
qWarning() << "Could not create a11y element for" << window
<< "with platform window" << (window ? window->handle() : nullptr);
}
}
return element;
}
- (void)invalidate
{
[self release];
}
- (BOOL)isAccessibilityElement
{
return YES;
}
- (NSString*)accessibilityLabel
{
QAccessibleInterface *iface = QAccessible::accessibleInterface(self.axid);
if (!iface) {
qWarning() << "invalid accessible interface for: " << self.axid;
return @"";
}
return iface->text(QAccessible::Name).toNSString();
}
- (NSString*)accessibilityHint
{
QAccessibleInterface *iface = QAccessible::accessibleInterface(self.axid);
if (!iface) {
qWarning() << "invalid accessible interface for: " << self.axid;
return @"";
}
return iface->text(QAccessible::Description).toNSString();
}
- (NSString*)accessibilityValue
{
QAccessibleInterface *iface = QAccessible::accessibleInterface(self.axid);
if (!iface) {
qWarning() << "invalid accessible interface for: " << self.axid;
return @"";
}
QAccessible::State state = iface->state();
if (state.checkable)
return state.checked
? QCoreApplication::translate(ACCESSIBILITY_ELEMENT, AE_CHECKED).toNSString()
: QCoreApplication::translate(ACCESSIBILITY_ELEMENT, AE_UNCHECKED).toNSString();
QAccessibleValueInterface *val = iface->valueInterface();
if (val) {
return val->currentValue().toString().toNSString();
} else if (QAccessibleTextInterface *text = iface->textInterface()) {
return text->text(0, text->characterCount()).toNSString();
}
return [super accessibilityHint];
}
- (CGRect)accessibilityFrame
{
QAccessibleInterface *iface = QAccessible::accessibleInterface(self.axid);
if (!iface) {
qWarning() << "invalid accessible interface for: " << self.axid;
return CGRect();
}
QRect rect = iface->rect();
return CGRectMake(rect.x(), rect.y(), rect.width(), rect.height());
}
- (UIAccessibilityTraits)accessibilityTraits
{
UIAccessibilityTraits traits = UIAccessibilityTraitNone;
QAccessibleInterface *iface = QAccessible::accessibleInterface(self.axid);
if (!iface) {
qWarning() << "invalid accessible interface for: " << self.axid;
return traits;
}
QAccessible::State state = iface->state();
if (state.disabled)
traits |= UIAccessibilityTraitNotEnabled;
if (state.searchEdit)
traits |= UIAccessibilityTraitSearchField;
if (state.selected)
traits |= UIAccessibilityTraitSelected;
const auto accessibleRole = iface->role();
if (accessibleRole == QAccessible::Button) {
traits |= UIAccessibilityTraitButton;
} else if (accessibleRole == QAccessible::EditableText) {
static auto defaultTextFieldTraits = []{
auto *textField = [[[UITextField alloc] initWithFrame:CGRectZero] autorelease];
return textField.accessibilityTraits;
}();
traits |= defaultTextFieldTraits;
} else if (accessibleRole == QAccessible::Graphic) {
traits |= UIAccessibilityTraitImage;
} else if (accessibleRole == QAccessible::Heading) {
traits |= UIAccessibilityTraitHeader;
} else if (accessibleRole == QAccessible::Link) {
traits |= UIAccessibilityTraitLink;
} else if (accessibleRole == QAccessible::StaticText) {
traits |= UIAccessibilityTraitStaticText;
}
if (iface->valueInterface())
traits |= UIAccessibilityTraitAdjustable;
return traits;
}
- (BOOL)accessibilityActivate
{
QAccessibleInterface *iface = QAccessible::accessibleInterface(self.axid);
if (QAccessibleActionInterface *action = iface->actionInterface()) {
if (action->actionNames().contains(QAccessibleActionInterface::pressAction())) {
action->doAction(QAccessibleActionInterface::pressAction());
return YES;
} else if (action->actionNames().contains(QAccessibleActionInterface::showMenuAction())) {
action->doAction(QAccessibleActionInterface::showMenuAction());
return YES;
}
}
return NO; // fall back to sending mouse clicks
}
- (void)accessibilityIncrement
{
QAccessibleInterface *iface = QAccessible::accessibleInterface(self.axid);
if (QAccessibleActionInterface *action = iface->actionInterface())
action->doAction(QAccessibleActionInterface::increaseAction());
}
- (void)accessibilityDecrement
{
QAccessibleInterface *iface = QAccessible::accessibleInterface(self.axid);
if (QAccessibleActionInterface *action = iface->actionInterface())
action->doAction(QAccessibleActionInterface::decreaseAction());
}
- (BOOL)accessibilityScroll:(UIAccessibilityScrollDirection)direction
{
QAccessibleInterface *iface = QAccessible::accessibleInterface(self.axid);
QAccessibleActionInterface *action = iface->actionInterface();
if (!action)
return NO;
switch (direction) {
case UIAccessibilityScrollDirectionRight:
action->doAction(QAccessibleActionInterface::scrollRightAction());
return YES;
case UIAccessibilityScrollDirectionLeft:
action->doAction(QAccessibleActionInterface::scrollLeftAction());
return YES;
case UIAccessibilityScrollDirectionUp:
action->doAction(QAccessibleActionInterface::scrollUpAction());
return YES;
case UIAccessibilityScrollDirectionDown:
action->doAction(QAccessibleActionInterface::scrollDownAction());
return YES;
case UIAccessibilityScrollDirectionNext:
action->doAction(QAccessibleActionInterface::nextPageAction());
return YES;
case UIAccessibilityScrollDirectionPrevious:
action->doAction(QAccessibleActionInterface::previousPageAction());
return YES;
}
return NO;
}
@end
#endif
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