Revert "5.6.3: qcocoaaccessibilityelement.mm original"

This reverts commit 3212d56901.
This commit is contained in:
kleuter 2021-08-09 17:14:54 +02:00
parent ce626a86a5
commit b9bebc31d5

View File

@ -1,596 +0,0 @@
/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
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** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
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** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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****************************************************************************/
#include "qcocoaaccessibilityelement.h"
#include "qcocoaaccessibility.h"
#include "qcocoahelpers.h"
#include "qcocoawindow.h"
#include "private/qaccessiblecache_p.h"
#include <QtPlatformSupport/private/qaccessiblebridgeutils_p.h>
#include <QtGui/qaccessible.h>
#import <AppKit/NSAccessibility.h>
QT_USE_NAMESPACE
#ifndef QT_NO_ACCESSIBILITY
static void convertLineOffset(QAccessibleTextInterface *text, int *line, int *offset, NSUInteger *start = 0, NSUInteger *end = 0)
{
Q_ASSERT(*line == -1 || *offset == -1);
Q_ASSERT(*line != -1 || *offset != -1);
Q_ASSERT(*offset <= text->characterCount());
int curLine = -1;
int curStart = 0, curEnd = 0;
do {
curStart = curEnd;
text->textAtOffset(curStart, QAccessible::LineBoundary, &curStart, &curEnd);
// If the text is empty then we just return
if (curStart == -1 || curEnd == -1) {
if (start)
*start = 0;
if (end)
*end = 0;
return;
}
++curLine;
{
// check for a case where a single word longer than the text edit's width and gets wrapped
// in the middle of the word; in this case curEnd will be an offset belonging to the next line
// and therefore nextEnd will not be equal to curEnd
int nextStart;
int nextEnd;
text->textAtOffset(curEnd, QAccessible::LineBoundary, &nextStart, &nextEnd);
if (nextEnd == curEnd)
++curEnd;
}
} while ((*line == -1 || curLine < *line) && (*offset == -1 || (curEnd <= *offset)) && curEnd <= text->characterCount());
curEnd = qMin(curEnd, text->characterCount());
if (*line == -1)
*line = curLine;
if (*offset == -1)
*offset = curStart;
Q_ASSERT(curStart >= 0);
Q_ASSERT(curEnd >= 0);
if (start)
*start = curStart;
if (end)
*end = curEnd;
}
@implementation QMacAccessibilityElement
- (id)initWithId:(QAccessible::Id)anId
{
Q_ASSERT((int)anId < 0);
self = [super init];
if (self) {
axid = anId;
QAccessibleInterface *iface = QAccessible::accessibleInterface(axid);
Q_ASSERT(iface);
role = QCocoaAccessible::macRole(iface);
}
return self;
}
+ (id)elementWithId:(QAccessible::Id)anId
{
Q_ASSERT(anId);
if (!anId)
return nil;
QAccessibleCache *cache = QAccessibleCache::instance();
QMacAccessibilityElement *element = cache->elementForId(anId);
if (!element) {
QAccessibleInterface *iface = QAccessible::accessibleInterface(anId);
Q_ASSERT(iface);
if (!iface || !iface->isValid())
return nil;
element = [[self alloc] initWithId:anId];
cache->insertElement(anId, element);
}
return element;
}
- (void)invalidate {
axid = 0;
NSAccessibilityPostNotification(self, NSAccessibilityUIElementDestroyedNotification);
[self release];
}
- (void)dealloc {
[super dealloc];
}
- (BOOL)isEqual:(id)object {
if ([object isKindOfClass:[QMacAccessibilityElement class]]) {
QMacAccessibilityElement *other = object;
return other->axid == axid;
} else {
return NO;
}
}
- (NSUInteger)hash {
return axid;
}
//
// accessibility protocol
//
// attributes
+ (id) lineNumberForIndex: (int)index forText:(const QString &)text
{
QStringRef textBefore = QStringRef(&text, 0, index);
int newlines = textBefore.count(QLatin1Char('\n'));
return [NSNumber numberWithInt: newlines];
}
- (BOOL) accessibilityNotifiesWhenDestroyed {
return YES;
}
- (NSArray *)accessibilityAttributeNames {
static NSArray *defaultAttributes = nil;
QAccessibleInterface *iface = QAccessible::accessibleInterface(axid);
if (!iface || !iface->isValid())
return defaultAttributes;
if (defaultAttributes == nil) {
defaultAttributes = [[NSArray alloc] initWithObjects:
NSAccessibilityRoleAttribute,
NSAccessibilityRoleDescriptionAttribute,
NSAccessibilitySubroleAttribute,
NSAccessibilityChildrenAttribute,
NSAccessibilityFocusedAttribute,
NSAccessibilityParentAttribute,
NSAccessibilityWindowAttribute,
NSAccessibilityTopLevelUIElementAttribute,
NSAccessibilityPositionAttribute,
NSAccessibilitySizeAttribute,
NSAccessibilityTitleAttribute,
NSAccessibilityDescriptionAttribute,
NSAccessibilityEnabledAttribute,
nil];
}
NSMutableArray *attributes = [[NSMutableArray alloc] initWithCapacity : [defaultAttributes count]];
[attributes addObjectsFromArray : defaultAttributes];
if (QCocoaAccessible::hasValueAttribute(iface)) {
[attributes addObject : NSAccessibilityValueAttribute];
}
if (iface->textInterface()) {
[attributes addObjectsFromArray: [[NSArray alloc] initWithObjects:
NSAccessibilityNumberOfCharactersAttribute,
NSAccessibilitySelectedTextAttribute,
NSAccessibilitySelectedTextRangeAttribute,
NSAccessibilityVisibleCharacterRangeAttribute,
NSAccessibilityInsertionPointLineNumberAttribute,
nil
]];
// TODO: multi-selection: NSAccessibilitySelectedTextRangesAttribute,
}
if (iface->valueInterface()) {
[attributes addObjectsFromArray: [[NSArray alloc] initWithObjects:
NSAccessibilityMinValueAttribute,
NSAccessibilityMaxValueAttribute,
nil
]];
}
return [attributes autorelease];
}
- (id)parentElement {
QAccessibleInterface *iface = QAccessible::accessibleInterface(axid);
if (!iface || !iface->isValid())
return nil;
if (QWindow *window = iface->window()) {
QCocoaWindow *win = static_cast<QCocoaWindow*>(window->handle());
return win->qtView();
}
QAccessibleInterface *parent = iface->parent();
if (!parent) {
qWarning() << "INVALID PARENT FOR INTERFACE: " << iface;
return nil;
}
QAccessible::Id parentId = QAccessible::uniqueId(parent);
return [QMacAccessibilityElement elementWithId: parentId];
}
- (id) minValueAttribute:(QAccessibleInterface*)iface {
if (QAccessibleValueInterface *val = iface->valueInterface())
return [NSNumber numberWithDouble: val->minimumValue().toDouble()];
return nil;
}
- (id) maxValueAttribute:(QAccessibleInterface*)iface {
if (QAccessibleValueInterface *val = iface->valueInterface())
return [NSNumber numberWithDouble: val->maximumValue().toDouble()];
return nil;
}
- (id)accessibilityAttributeValue:(NSString *)attribute {
QAccessibleInterface *iface = QAccessible::accessibleInterface(axid);
if (!iface || !iface->isValid()) {
qWarning() << "Called attribute on invalid object: " << axid;
return nil;
}
if ([attribute isEqualToString:NSAccessibilityRoleAttribute]) {
return role;
} else if ([attribute isEqualToString:NSAccessibilitySubroleAttribute]) {
return QCocoaAccessible::macSubrole(iface);
} else if ([attribute isEqualToString:NSAccessibilityRoleDescriptionAttribute]) {
return NSAccessibilityRoleDescription(role, [self accessibilityAttributeValue:NSAccessibilitySubroleAttribute]);
} else if ([attribute isEqualToString:NSAccessibilityChildrenAttribute]) {
return QCocoaAccessible::unignoredChildren(iface);
} 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([self parentElement]);
} else if ([attribute isEqualToString:NSAccessibilityWindowAttribute]) {
// We're in the same window as our parent.
return [[self parentElement] accessibilityAttributeValue:NSAccessibilityWindowAttribute];
} else if ([attribute isEqualToString:NSAccessibilityTopLevelUIElementAttribute]) {
// We're in the same top level element as our parent.
return [[self parentElement] accessibilityAttributeValue:NSAccessibilityTopLevelUIElementAttribute];
} else if ([attribute isEqualToString:NSAccessibilityPositionAttribute]) {
QPoint qtPosition = iface->rect().topLeft();
QSize qtSize = iface->rect().size();
return [NSValue valueWithPoint: NSMakePoint(qtPosition.x(), qt_mac_flipYCoordinate(qtPosition.y() + qtSize.height()))];
} else if ([attribute isEqualToString:NSAccessibilitySizeAttribute]) {
QSize qtSize = iface->rect().size();
return [NSValue valueWithSize: NSMakeSize(qtSize.width(), qtSize.height())];
} else if ([attribute isEqualToString:NSAccessibilityTitleAttribute]) {
return QCFString::toNSString(iface->text(QAccessible::Name));
} else if ([attribute isEqualToString:NSAccessibilityDescriptionAttribute]) {
return QCFString::toNSString(iface->text(QAccessible::Description));
} else if ([attribute isEqualToString:NSAccessibilityEnabledAttribute]) {
return [NSNumber numberWithBool:!iface->state().disabled];
} else if ([attribute isEqualToString:NSAccessibilityValueAttribute]) {
// VoiceOver asks for the value attribute for all elements. Return nil
// if we don't want the element to have a value attribute.
if (!QCocoaAccessible::hasValueAttribute(iface))
return nil;
return QCocoaAccessible::getValueAttribute(iface);
} else if ([attribute isEqualToString:NSAccessibilityNumberOfCharactersAttribute]) {
if (QAccessibleTextInterface *text = iface->textInterface())
return [NSNumber numberWithInt: text->characterCount()];
return nil;
} else if ([attribute isEqualToString:NSAccessibilitySelectedTextAttribute]) {
if (QAccessibleTextInterface *text = iface->textInterface()) {
int start = 0;
int end = 0;
text->selection(0, &start, &end);
return text->text(start, end).toNSString();
}
return nil;
} else if ([attribute isEqualToString:NSAccessibilitySelectedTextRangeAttribute]) {
if (QAccessibleTextInterface *text = iface->textInterface()) {
int start = 0;
int end = 0;
if (text->selectionCount() > 0) {
text->selection(0, &start, &end);
} else {
start = text->cursorPosition();
end = start;
}
return [NSValue valueWithRange:NSMakeRange(quint32(start), quint32(end - start))];
}
return [NSValue valueWithRange: NSMakeRange(0, 0)];
} else if ([attribute isEqualToString:NSAccessibilityVisibleCharacterRangeAttribute]) {
// FIXME This is not correct and may impact performance for big texts
return [NSValue valueWithRange: NSMakeRange(0, iface->textInterface()->characterCount())];
} else if ([attribute isEqualToString:NSAccessibilityInsertionPointLineNumberAttribute]) {
if (QAccessibleTextInterface *text = iface->textInterface()) {
int line = 0; // true for all single line edits
if (iface->state().multiLine) {
int position = text->cursorPosition();
convertLineOffset(text, &line, &position);
}
return [NSNumber numberWithInt: line];
}
return nil;
} else if ([attribute isEqualToString:NSAccessibilityMinValueAttribute]) {
return [self minValueAttribute:iface];
} else if ([attribute isEqualToString:NSAccessibilityMaxValueAttribute]) {
return [self maxValueAttribute:iface];
}
return nil;
}
- (NSArray *)accessibilityParameterizedAttributeNames {
QAccessibleInterface *iface = QAccessible::accessibleInterface(axid);
if (!iface || !iface->isValid()) {
qWarning() << "Called attribute on invalid object: " << axid;
return nil;
}
if (iface->textInterface()) {
return [[NSArray alloc] initWithObjects:
NSAccessibilityStringForRangeParameterizedAttribute,
NSAccessibilityLineForIndexParameterizedAttribute,
NSAccessibilityRangeForLineParameterizedAttribute,
NSAccessibilityRangeForPositionParameterizedAttribute,
// NSAccessibilityRangeForIndexParameterizedAttribute,
NSAccessibilityBoundsForRangeParameterizedAttribute,
// NSAccessibilityRTFForRangeParameterizedAttribute,
NSAccessibilityStyleRangeForIndexParameterizedAttribute,
NSAccessibilityAttributedStringForRangeParameterizedAttribute,
nil
];
}
return nil;
}
- (id)accessibilityAttributeValue:(NSString *)attribute forParameter:(id)parameter {
QAccessibleInterface *iface = QAccessible::accessibleInterface(axid);
if (!iface || !iface->isValid()) {
qWarning() << "Called attribute on invalid object: " << axid;
return nil;
}
if (!iface->textInterface())
return nil;
if ([attribute isEqualToString: NSAccessibilityStringForRangeParameterizedAttribute]) {
NSRange range = [parameter rangeValue];
QString text = iface->textInterface()->text(range.location, range.location + range.length);
return text.toNSString();
}
if ([attribute isEqualToString: NSAccessibilityLineForIndexParameterizedAttribute]) {
int index = [parameter intValue];
if (index < 0 || index > iface->textInterface()->characterCount())
return nil;
int line = -1;
convertLineOffset(iface->textInterface(), &line, &index);
return [NSNumber numberWithInt:line];
}
if ([attribute isEqualToString: NSAccessibilityRangeForLineParameterizedAttribute]) {
int line = [parameter intValue];
if (line < 0)
return nil;
int lineOffset = -1;
NSUInteger startOffset = 0;
NSUInteger endOffset = 0;
convertLineOffset(iface->textInterface(), &line, &lineOffset, &startOffset, &endOffset);
return [NSValue valueWithRange:NSMakeRange(startOffset, endOffset - startOffset)];
}
if ([attribute isEqualToString: NSAccessibilityBoundsForRangeParameterizedAttribute]) {
NSRange range = [parameter rangeValue];
QRect firstRect = iface->textInterface()->characterRect(range.location);
QRect rect;
if (range.length > 0) {
NSUInteger position = range.location + range.length - 1;
if (position > range.location && iface->textInterface()->text(position, position + 1) == QStringLiteral("\n"))
--position;
QRect lastRect = iface->textInterface()->characterRect(position);
rect = firstRect.united(lastRect);
} else {
rect = firstRect;
rect.setWidth(1);
}
return [NSValue valueWithRect: NSMakeRect((CGFloat) rect.x(),(CGFloat) qt_mac_flipYCoordinate(rect.y() + rect.height()), rect.width(), rect.height())];
}
if ([attribute isEqualToString: NSAccessibilityAttributedStringForRangeParameterizedAttribute]) {
NSRange range = [parameter rangeValue];
QString text = iface->textInterface()->text(range.location, range.location + range.length);
return [[NSAttributedString alloc] initWithString: text.toNSString()];
} else if ([attribute isEqualToString: NSAccessibilityRangeForPositionParameterizedAttribute]) {
NSPoint nsPoint = [parameter pointValue];
QPoint point(static_cast<int>(nsPoint.x), static_cast<int>(qt_mac_flipYCoordinate(nsPoint.y)));
int offset = iface->textInterface()->offsetAtPoint(point);
return [NSValue valueWithRange:NSMakeRange(static_cast<NSUInteger>(offset), 1)];
} else if ([attribute isEqualToString: NSAccessibilityStyleRangeForIndexParameterizedAttribute]) {
int start = 0;
int end = 0;
iface->textInterface()->attributes([parameter intValue], &start, &end);
return [NSValue valueWithRange:NSMakeRange(static_cast<NSUInteger>(start), static_cast<NSUInteger>(end - start))];
}
return nil;
}
- (BOOL)accessibilityIsAttributeSettable:(NSString *)attribute {
QAccessibleInterface *iface = QAccessible::accessibleInterface(axid);
if (!iface || !iface->isValid())
return NO;
if ([attribute isEqualToString:NSAccessibilityFocusedAttribute]) {
return iface->state().focusable ? YES : NO;
} else if ([attribute isEqualToString:NSAccessibilityValueAttribute]) {
if (iface->textInterface() && iface->state().editable)
return YES;
if (iface->valueInterface())
return YES;
return NO;
} else if ([attribute isEqualToString:NSAccessibilitySelectedTextRangeAttribute]) {
return iface->textInterface() ? YES : NO;
}
return NO;
}
- (void)accessibilitySetValue:(id)value forAttribute:(NSString *)attribute {
QAccessibleInterface *iface = QAccessible::accessibleInterface(axid);
if (!iface || !iface->isValid())
return;
if ([attribute isEqualToString:NSAccessibilityFocusedAttribute]) {
if (QAccessibleActionInterface *action = iface->actionInterface())
action->doAction(QAccessibleActionInterface::setFocusAction());
} else if ([attribute isEqualToString:NSAccessibilityValueAttribute]) {
if (iface->textInterface()) {
QString text = QString::fromNSString((NSString *)value);
iface->setText(QAccessible::Value, text);
} else if (QAccessibleValueInterface *valueIface = iface->valueInterface()) {
double val = [value doubleValue];
valueIface->setCurrentValue(val);
}
} else if ([attribute isEqualToString:NSAccessibilitySelectedTextRangeAttribute]) {
if (QAccessibleTextInterface *text = iface->textInterface()) {
NSRange range = [value rangeValue];
if (range.length > 0)
text->setSelection(0, range.location, range.location + range.length);
else
text->setCursorPosition(range.location);
}
}
}
// actions
- (NSArray *)accessibilityActionNames {
NSMutableArray * nsActions = [NSMutableArray new];
QAccessibleInterface *iface = QAccessible::accessibleInterface(axid);
if (!iface || !iface->isValid())
return nsActions;
const QStringList &supportedActionNames = QAccessibleBridgeUtils::effectiveActionNames(iface);
foreach (const QString &qtAction, supportedActionNames) {
NSString *nsAction = QCocoaAccessible::getTranslatedAction(qtAction);
if (nsAction)
[nsActions addObject : nsAction];
}
return nsActions;
}
- (NSString *)accessibilityActionDescription:(NSString *)action {
QAccessibleInterface *iface = QAccessible::accessibleInterface(axid);
if (!iface || !iface->isValid())
return nil; // FIXME is that the right return type??
QString qtAction = QCocoaAccessible::translateAction(action, iface);
QString description;
// Return a description from the action interface if this action is not known to the OS.
if (qtAction.isEmpty()) {
if (QAccessibleActionInterface *actionInterface = iface->actionInterface()) {
qtAction = QString::fromNSString((NSString *)action);
description = actionInterface->localizedActionDescription(qtAction);
}
} else {
description = qAccessibleLocalizedActionDescription(qtAction);
}
return QCFString::toNSString(description);
}
- (void)accessibilityPerformAction:(NSString *)action {
QAccessibleInterface *iface = QAccessible::accessibleInterface(axid);
if (iface) {
const QString qtAction = QCocoaAccessible::translateAction(action, iface);
QAccessibleBridgeUtils::performEffectiveAction(iface, qtAction);
}
}
// misc
- (BOOL)accessibilityIsIgnored {
QAccessibleInterface *iface = QAccessible::accessibleInterface(axid);
if (!iface || !iface->isValid())
return true;
return QCocoaAccessible::shouldBeIgnored(iface);
}
- (id)accessibilityHitTest:(NSPoint)point {
QAccessibleInterface *iface = QAccessible::accessibleInterface(axid);
if (!iface || !iface->isValid()) {
// qDebug() << "Hit test: INVALID";
return NSAccessibilityUnignoredAncestor(self);
}
int y = qt_mac_flipYCoordinate(point.y);
QAccessibleInterface *childInterface = iface->childAt(point.x, y);
// No child found, meaning we hit this element.
if (!childInterface)
return NSAccessibilityUnignoredAncestor(self);
// find the deepest child at the point
QAccessibleInterface *childOfChildInterface = 0;
do {
childOfChildInterface = childInterface->childAt(point.x, y);
if (childOfChildInterface)
childInterface = childOfChildInterface;
} while (childOfChildInterface);
QAccessible::Id childId = QAccessible::uniqueId(childInterface);
// hit a child, forward to child accessible interface.
QMacAccessibilityElement *accessibleElement = [QMacAccessibilityElement elementWithId:childId];
if (accessibleElement)
return NSAccessibilityUnignoredAncestor(accessibleElement);
return NSAccessibilityUnignoredAncestor(self);
}
- (id)accessibilityFocusedUIElement {
QAccessibleInterface *iface = QAccessible::accessibleInterface(axid);
if (!iface || !iface->isValid()) {
qWarning() << "FocusedUIElement for INVALID";
return nil;
}
QAccessibleInterface *childInterface = iface->focusChild();
if (childInterface) {
QAccessible::Id childAxid = QAccessible::uniqueId(childInterface);
QMacAccessibilityElement *accessibleElement = [QMacAccessibilityElement elementWithId:childAxid];
return NSAccessibilityUnignoredAncestor(accessibleElement);
}
return NSAccessibilityUnignoredAncestor(self);
}
@end
#endif // QT_NO_ACCESSIBILITY