WebAccessibilityObjectWrapperBase.mm [plain text]
/*
* Copyright (C) 2008, 2009, 2010, 2011 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.
* 3. Neither the name of Apple Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE 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 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 "WebAccessibilityObjectWrapperBase.h"
#if HAVE(ACCESSIBILITY)
#import "AXObjectCache.h"
#import "AccessibilityARIAGridRow.h"
#import "AccessibilityList.h"
#import "AccessibilityListBox.h"
#import "AccessibilityRenderObject.h"
#import "AccessibilityScrollView.h"
#import "AccessibilitySpinButton.h"
#import "AccessibilityTable.h"
#import "AccessibilityTableCell.h"
#import "AccessibilityTableColumn.h"
#import "AccessibilityTableRow.h"
#import "ColorMac.h"
#import "ContextMenuController.h"
#import "Editing.h"
#import "Font.h"
#import "FontCascade.h"
#import "Frame.h"
#import "FrameLoaderClient.h"
#import "FrameSelection.h"
#import "HTMLNames.h"
#import "LocalizedStrings.h"
#import "Page.h"
#import "RenderTextControl.h"
#import "RenderView.h"
#import "RenderWidget.h"
#import "ScrollView.h"
#import "TextCheckerClient.h"
#import "TextCheckingHelper.h"
#import "VisibleUnits.h"
#import "WebCoreFrameView.h"
#import "WebCoreObjCExtras.h"
#import "WebCoreSystemInterface.h"
using namespace WebCore;
using namespace HTMLNames;
// Search Keys
#ifndef NSAccessibilityAnyTypeSearchKey
#define NSAccessibilityAnyTypeSearchKey @"AXAnyTypeSearchKey"
#endif
#ifndef NSAccessibilityArticleSearchKey
#define NSAccessibilityArticleSearchKey @"AXArticleSearchKey"
#endif
#ifndef NSAccessibilityBlockquoteSameLevelSearchKey
#define NSAccessibilityBlockquoteSameLevelSearchKey @"AXBlockquoteSameLevelSearchKey"
#endif
#ifndef NSAccessibilityBlockquoteSearchKey
#define NSAccessibilityBlockquoteSearchKey @"AXBlockquoteSearchKey"
#endif
#ifndef NSAccessibilityBoldFontSearchKey
#define NSAccessibilityBoldFontSearchKey @"AXBoldFontSearchKey"
#endif
#ifndef NSAccessibilityButtonSearchKey
#define NSAccessibilityButtonSearchKey @"AXButtonSearchKey"
#endif
#ifndef NSAccessibilityCheckBoxSearchKey
#define NSAccessibilityCheckBoxSearchKey @"AXCheckBoxSearchKey"
#endif
#ifndef NSAccessibilityControlSearchKey
#define NSAccessibilityControlSearchKey @"AXControlSearchKey"
#endif
#ifndef NSAccessibilityDifferentTypeSearchKey
#define NSAccessibilityDifferentTypeSearchKey @"AXDifferentTypeSearchKey"
#endif
#ifndef NSAccessibilityFontChangeSearchKey
#define NSAccessibilityFontChangeSearchKey @"AXFontChangeSearchKey"
#endif
#ifndef NSAccessibilityFontColorChangeSearchKey
#define NSAccessibilityFontColorChangeSearchKey @"AXFontColorChangeSearchKey"
#endif
#ifndef NSAccessibilityFrameSearchKey
#define NSAccessibilityFrameSearchKey @"AXFrameSearchKey"
#endif
#ifndef NSAccessibilityGraphicSearchKey
#define NSAccessibilityGraphicSearchKey @"AXGraphicSearchKey"
#endif
#ifndef NSAccessibilityHeadingLevel1SearchKey
#define NSAccessibilityHeadingLevel1SearchKey @"AXHeadingLevel1SearchKey"
#endif
#ifndef NSAccessibilityHeadingLevel2SearchKey
#define NSAccessibilityHeadingLevel2SearchKey @"AXHeadingLevel2SearchKey"
#endif
#ifndef NSAccessibilityHeadingLevel3SearchKey
#define NSAccessibilityHeadingLevel3SearchKey @"AXHeadingLevel3SearchKey"
#endif
#ifndef NSAccessibilityHeadingLevel4SearchKey
#define NSAccessibilityHeadingLevel4SearchKey @"AXHeadingLevel4SearchKey"
#endif
#ifndef NSAccessibilityHeadingLevel5SearchKey
#define NSAccessibilityHeadingLevel5SearchKey @"AXHeadingLevel5SearchKey"
#endif
#ifndef NSAccessibilityHeadingLevel6SearchKey
#define NSAccessibilityHeadingLevel6SearchKey @"AXHeadingLevel6SearchKey"
#endif
#ifndef NSAccessibilityHeadingSameLevelSearchKey
#define NSAccessibilityHeadingSameLevelSearchKey @"AXHeadingSameLevelSearchKey"
#endif
#ifndef NSAccessibilityHeadingSearchKey
#define NSAccessibilityHeadingSearchKey @"AXHeadingSearchKey"
#endif
#ifndef NSAccessibilityHighlightedSearchKey
#define NSAccessibilityHighlightedSearchKey @"AXHighlightedSearchKey"
#endif
#ifndef NSAccessibilityItalicFontSearchKey
#define NSAccessibilityItalicFontSearchKey @"AXItalicFontSearchKey"
#endif
#ifndef NSAccessibilityLandmarkSearchKey
#define NSAccessibilityLandmarkSearchKey @"AXLandmarkSearchKey"
#endif
#ifndef NSAccessibilityLinkSearchKey
#define NSAccessibilityLinkSearchKey @"AXLinkSearchKey"
#endif
#ifndef NSAccessibilityListSearchKey
#define NSAccessibilityListSearchKey @"AXListSearchKey"
#endif
#ifndef NSAccessibilityLiveRegionSearchKey
#define NSAccessibilityLiveRegionSearchKey @"AXLiveRegionSearchKey"
#endif
#ifndef NSAccessibilityMisspelledWordSearchKey
#define NSAccessibilityMisspelledWordSearchKey @"AXMisspelledWordSearchKey"
#endif
#ifndef NSAccessibilityOutlineSearchKey
#define NSAccessibilityOutlineSearchKey @"AXOutlineSearchKey"
#endif
#ifndef NSAccessibilityPlainTextSearchKey
#define NSAccessibilityPlainTextSearchKey @"AXPlainTextSearchKey"
#endif
#ifndef NSAccessibilityRadioGroupSearchKey
#define NSAccessibilityRadioGroupSearchKey @"AXRadioGroupSearchKey"
#endif
#ifndef NSAccessibilitySameTypeSearchKey
#define NSAccessibilitySameTypeSearchKey @"AXSameTypeSearchKey"
#endif
#ifndef NSAccessibilityStaticTextSearchKey
#define NSAccessibilityStaticTextSearchKey @"AXStaticTextSearchKey"
#endif
#ifndef NSAccessibilityStyleChangeSearchKey
#define NSAccessibilityStyleChangeSearchKey @"AXStyleChangeSearchKey"
#endif
#ifndef NSAccessibilityTableSameLevelSearchKey
#define NSAccessibilityTableSameLevelSearchKey @"AXTableSameLevelSearchKey"
#endif
#ifndef NSAccessibilityTableSearchKey
#define NSAccessibilityTableSearchKey @"AXTableSearchKey"
#endif
#ifndef NSAccessibilityTextFieldSearchKey
#define NSAccessibilityTextFieldSearchKey @"AXTextFieldSearchKey"
#endif
#ifndef NSAccessibilityUnderlineSearchKey
#define NSAccessibilityUnderlineSearchKey @"AXUnderlineSearchKey"
#endif
#ifndef NSAccessibilityUnvisitedLinkSearchKey
#define NSAccessibilityUnvisitedLinkSearchKey @"AXUnvisitedLinkSearchKey"
#endif
#ifndef NSAccessibilityVisitedLinkSearchKey
#define NSAccessibilityVisitedLinkSearchKey @"AXVisitedLinkSearchKey"
#endif
// Search
#ifndef NSAccessibilityImmediateDescendantsOnly
#define NSAccessibilityImmediateDescendantsOnly @"AXImmediateDescendantsOnly"
#endif
static NSArray *convertMathPairsToNSArray(const AccessibilityObject::AccessibilityMathMultiscriptPairs& pairs, NSString *subscriptKey, NSString *superscriptKey)
{
NSMutableArray *array = [NSMutableArray arrayWithCapacity:pairs.size()];
for (const auto& pair : pairs) {
NSMutableDictionary *pairDictionary = [NSMutableDictionary dictionary];
if (pair.first && pair.first->wrapper() && !pair.first->accessibilityIsIgnored())
[pairDictionary setObject:pair.first->wrapper() forKey:subscriptKey];
if (pair.second && pair.second->wrapper() && !pair.second->accessibilityIsIgnored())
[pairDictionary setObject:pair.second->wrapper() forKey:superscriptKey];
[array addObject:pairDictionary];
}
return array;
}
NSArray *convertToNSArray(const AccessibilityObject::AccessibilityChildrenVector& vector)
{
NSMutableArray *array = [NSMutableArray arrayWithCapacity:vector.size()];
for (const auto& child : vector) {
WebAccessibilityObjectWrapper* wrapper = child->wrapper();
ASSERT(wrapper);
if (wrapper) {
// we want to return the attachment view instead of the object representing the attachment.
// otherwise, we get palindrome errors in the AX hierarchy
if (child->isAttachment() && [wrapper attachmentView])
[array addObject:[wrapper attachmentView]];
else
[array addObject:wrapper];
}
}
return [[array copy] autorelease];
}
@implementation WebAccessibilityObjectWrapperBase
- (id)initWithAccessibilityObject:(AccessibilityObject*)axObject
{
if (!(self = [super init]))
return nil;
m_object = axObject;
return self;
}
- (void)detach
{
m_object = nullptr;
}
- (BOOL)updateObjectBackingStore
{
// Calling updateBackingStore() can invalidate this element so self must be retained.
// If it does become invalidated, m_object will be nil.
[[self retain] autorelease];
if (!m_object)
return NO;
m_object->updateBackingStore();
if (!m_object)
return NO;
return YES;
}
- (id)attachmentView
{
return nil;
}
- (AccessibilityObject*)accessibilityObject
{
return m_object;
}
// FIXME: Different kinds of elements are putting the title tag to use in different
// AX fields. This should be rectified, but in the initial patch I want to achieve
// parity with existing behavior.
- (BOOL)titleTagShouldBeUsedInDescriptionField
{
return (m_object->isLink() && !m_object->isImageMapLink()) || m_object->isImage();
}
// On iOS, we don't have to return the value in the title. We can return the actual title, given the API.
- (BOOL)fileUploadButtonReturnsValueInTitle
{
return YES;
}
// This should be the "visible" text that's actually on the screen if possible.
// If there's alternative text, that can override the title.
- (NSString *)baseAccessibilityTitle
{
// Static text objects should not have a title. Its content is communicated in its AXValue.
if (m_object->roleValue() == StaticTextRole)
return [NSString string];
// A file upload button presents a challenge because it has button text and a value, but the
// API doesn't support this paradigm.
// The compromise is to return the button type in the role description and the value of the file path in the title
if (m_object->isFileUploadButton() && [self fileUploadButtonReturnsValueInTitle])
return m_object->stringValue();
Vector<AccessibilityText> textOrder;
m_object->accessibilityText(textOrder);
for (const auto& text : textOrder) {
// If we have alternative text, then we should not expose a title.
if (text.textSource == AlternativeText)
break;
// Once we encounter visible text, or the text from our children that should be used foremost.
if (text.textSource == VisibleText || text.textSource == ChildrenText)
return text.text;
// If there's an element that labels this object and it's not exposed, then we should use
// that text as our title.
if (text.textSource == LabelByElementText && !m_object->exposesTitleUIElement())
return text.text;
}
return [NSString string];
}
- (NSString *)baseAccessibilityDescription
{
// Static text objects should not have a description. Its content is communicated in its AXValue.
// One exception is the media control labels that have a value and a description. Those are set programatically.
if (m_object->roleValue() == StaticTextRole && !m_object->isMediaControlLabel())
return [NSString string];
Vector<AccessibilityText> textOrder;
m_object->accessibilityText(textOrder);
NSMutableString *returnText = [NSMutableString string];
bool visibleTextAvailable = false;
for (const auto& text : textOrder) {
if (text.textSource == AlternativeText) {
[returnText appendString:text.text];
break;
}
switch (text.textSource) {
// These are sub-components of one element (Attachment) that are re-combined in OSX and iOS.
case TitleText:
case SubtitleText:
case ActionText: {
if (!text.text.length())
break;
if ([returnText length])
[returnText appendString:@", "];
[returnText appendString:text.text];
break;
}
case VisibleText:
case ChildrenText:
case LabelByElementText:
visibleTextAvailable = true;
break;
default:
break;
}
if (text.textSource == TitleTagText && !visibleTextAvailable) {
[returnText appendString:text.text];
break;
}
}
return returnText;
}
- (NSString *)baseAccessibilityHelpText
{
Vector<AccessibilityText> textOrder;
m_object->accessibilityText(textOrder);
bool descriptiveTextAvailable = false;
for (const auto& text : textOrder) {
if (text.textSource == HelpText || text.textSource == SummaryText)
return text.text;
// If an element does NOT have other descriptive text the title tag should be used as its descriptive text.
// But, if those ARE available, then the title tag should be used for help text instead.
switch (text.textSource) {
case AlternativeText:
case VisibleText:
case ChildrenText:
case LabelByElementText:
descriptiveTextAvailable = true;
break;
default:
break;
}
if (text.textSource == TitleTagText && descriptiveTextAvailable)
return text.text;
}
return [NSString string];
}
struct PathConversionInfo {
WebAccessibilityObjectWrapperBase *wrapper;
CGMutablePathRef path;
};
static void convertPathToScreenSpaceFunction(PathConversionInfo& conversion, const PathElement& element)
{
WebAccessibilityObjectWrapperBase *wrapper = conversion.wrapper;
CGMutablePathRef newPath = conversion.path;
switch (element.type) {
case PathElementMoveToPoint:
{
CGPoint newPoint = [wrapper convertPointToScreenSpace:element.points[0]];
CGPathMoveToPoint(newPath, nil, newPoint.x, newPoint.y);
break;
}
case PathElementAddLineToPoint:
{
CGPoint newPoint = [wrapper convertPointToScreenSpace:element.points[0]];
CGPathAddLineToPoint(newPath, nil, newPoint.x, newPoint.y);
break;
}
case PathElementAddQuadCurveToPoint:
{
CGPoint newPoint1 = [wrapper convertPointToScreenSpace:element.points[0]];
CGPoint newPoint2 = [wrapper convertPointToScreenSpace:element.points[1]];
CGPathAddQuadCurveToPoint(newPath, nil, newPoint1.x, newPoint1.y, newPoint2.x, newPoint2.y);
break;
}
case PathElementAddCurveToPoint:
{
CGPoint newPoint1 = [wrapper convertPointToScreenSpace:element.points[0]];
CGPoint newPoint2 = [wrapper convertPointToScreenSpace:element.points[1]];
CGPoint newPoint3 = [wrapper convertPointToScreenSpace:element.points[2]];
CGPathAddCurveToPoint(newPath, nil, newPoint1.x, newPoint1.y, newPoint2.x, newPoint2.y, newPoint3.x, newPoint3.y);
break;
}
case PathElementCloseSubpath:
{
CGPathCloseSubpath(newPath);
break;
}
}
}
- (CGPathRef)convertPathToScreenSpace:(Path &)path
{
PathConversionInfo conversion = { self, CGPathCreateMutable() };
path.apply([&conversion](const PathElement& pathElement) {
convertPathToScreenSpaceFunction(conversion, pathElement);
});
return (CGPathRef)[(id)conversion.path autorelease];
}
- (CGPoint)convertPointToScreenSpace:(FloatPoint &)point
{
UNUSED_PARAM(point);
ASSERT_NOT_REACHED();
return CGPointZero;
}
- (NSString *)ariaLandmarkRoleDescription
{
switch (m_object->roleValue()) {
case LandmarkBannerRole:
return AXARIAContentGroupText(@"ARIALandmarkBanner");
case LandmarkComplementaryRole:
return AXARIAContentGroupText(@"ARIALandmarkComplementary");
case LandmarkContentInfoRole:
return AXARIAContentGroupText(@"ARIALandmarkContentInfo");
case LandmarkMainRole:
return AXARIAContentGroupText(@"ARIALandmarkMain");
case LandmarkNavigationRole:
return AXARIAContentGroupText(@"ARIALandmarkNavigation");
case LandmarkDocRegionRole:
case LandmarkRegionRole:
return AXARIAContentGroupText(@"ARIALandmarkRegion");
case LandmarkSearchRole:
return AXARIAContentGroupText(@"ARIALandmarkSearch");
case ApplicationAlertRole:
return AXARIAContentGroupText(@"ARIAApplicationAlert");
case ApplicationAlertDialogRole:
return AXARIAContentGroupText(@"ARIAApplicationAlertDialog");
case ApplicationDialogRole:
return AXARIAContentGroupText(@"ARIAApplicationDialog");
case ApplicationLogRole:
return AXARIAContentGroupText(@"ARIAApplicationLog");
case ApplicationMarqueeRole:
return AXARIAContentGroupText(@"ARIAApplicationMarquee");
case ApplicationStatusRole:
return AXARIAContentGroupText(@"ARIAApplicationStatus");
case ApplicationTimerRole:
return AXARIAContentGroupText(@"ARIAApplicationTimer");
case DocumentRole:
return AXARIAContentGroupText(@"ARIADocument");
case DocumentArticleRole:
return AXARIAContentGroupText(@"ARIADocumentArticle");
case DocumentMathRole:
return AXARIAContentGroupText(@"ARIADocumentMath");
case DocumentNoteRole:
return AXARIAContentGroupText(@"ARIADocumentNote");
case UserInterfaceTooltipRole:
return AXARIAContentGroupText(@"ARIAUserInterfaceTooltip");
case TabPanelRole:
return AXARIAContentGroupText(@"ARIATabPanel");
case WebApplicationRole:
return AXARIAContentGroupText(@"ARIAWebApplication");
default:
return nil;
}
}
- (NSString *)accessibilityPlatformMathSubscriptKey
{
ASSERT_NOT_REACHED();
return nil;
}
- (NSString *)accessibilityPlatformMathSuperscriptKey
{
ASSERT_NOT_REACHED();
return nil;
}
- (NSArray *)accessibilityMathPostscriptPairs
{
AccessibilityObject::AccessibilityMathMultiscriptPairs pairs;
m_object->mathPostscripts(pairs);
return convertMathPairsToNSArray(pairs, [self accessibilityPlatformMathSubscriptKey], [self accessibilityPlatformMathSuperscriptKey]);
}
- (NSArray *)accessibilityMathPrescriptPairs
{
AccessibilityObject::AccessibilityMathMultiscriptPairs pairs;
m_object->mathPrescripts(pairs);
return convertMathPairsToNSArray(pairs, [self accessibilityPlatformMathSubscriptKey], [self accessibilityPlatformMathSuperscriptKey]);
}
// This is set by DRT when it wants to listen for notifications.
static BOOL accessibilityShouldRepostNotifications;
+ (void)accessibilitySetShouldRepostNotifications:(BOOL)repost
{
accessibilityShouldRepostNotifications = repost;
#if PLATFORM(MAC)
AXObjectCache::setShouldRepostNotificationsForTests(repost);
#endif
}
- (void)accessibilityPostedNotification:(NSString *)notificationName
{
if (accessibilityShouldRepostNotifications)
[self accessibilityPostedNotification:notificationName userInfo:nil];
}
static bool isValueTypeSupported(id value)
{
return [value isKindOfClass:[NSString class]] || [value isKindOfClass:[NSNumber class]] || [value isKindOfClass:[WebAccessibilityObjectWrapperBase class]];
}
static NSArray *arrayRemovingNonSupportedTypes(NSArray *array)
{
ASSERT([array isKindOfClass:[NSArray class]]);
NSMutableArray *mutableArray = [array mutableCopy];
for (NSUInteger i = 0; i < [mutableArray count];) {
id value = [mutableArray objectAtIndex:i];
if ([value isKindOfClass:[NSDictionary class]])
[mutableArray replaceObjectAtIndex:i withObject:dictionaryRemovingNonSupportedTypes(value)];
else if ([value isKindOfClass:[NSArray class]])
[mutableArray replaceObjectAtIndex:i withObject:arrayRemovingNonSupportedTypes(value)];
else if (!isValueTypeSupported(value)) {
[mutableArray removeObjectAtIndex:i];
continue;
}
i++;
}
return [mutableArray autorelease];
}
static NSDictionary *dictionaryRemovingNonSupportedTypes(NSDictionary *dictionary)
{
if (!dictionary)
return nil;
ASSERT([dictionary isKindOfClass:[NSDictionary class]]);
NSMutableDictionary *mutableDictionary = [dictionary mutableCopy];
for (NSString *key in dictionary) {
id value = [dictionary objectForKey:key];
if ([value isKindOfClass:[NSDictionary class]])
[mutableDictionary setObject:dictionaryRemovingNonSupportedTypes(value) forKey:key];
else if ([value isKindOfClass:[NSArray class]])
[mutableDictionary setObject:arrayRemovingNonSupportedTypes(value) forKey:key];
else if (!isValueTypeSupported(value))
[mutableDictionary removeObjectForKey:key];
}
return [mutableDictionary autorelease];
}
- (void)accessibilityPostedNotification:(NSString *)notificationName userInfo:(NSDictionary *)userInfo
{
if (accessibilityShouldRepostNotifications) {
ASSERT(notificationName);
userInfo = dictionaryRemovingNonSupportedTypes(userInfo);
NSDictionary *info = [NSDictionary dictionaryWithObjectsAndKeys:notificationName, @"notificationName", userInfo, @"userInfo", nil];
[[NSNotificationCenter defaultCenter] postNotificationName:@"AXDRTNotification" object:self userInfo:info];
}
}
#pragma mark Search helpers
typedef HashMap<String, AccessibilitySearchKey> AccessibilitySearchKeyMap;
struct SearchKeyEntry {
String key;
AccessibilitySearchKey value;
};
static AccessibilitySearchKeyMap* createAccessibilitySearchKeyMap()
{
const SearchKeyEntry searchKeys[] = {
{ NSAccessibilityAnyTypeSearchKey, AnyTypeSearchKey },
{ NSAccessibilityArticleSearchKey, ArticleSearchKey },
{ NSAccessibilityBlockquoteSameLevelSearchKey, BlockquoteSameLevelSearchKey },
{ NSAccessibilityBlockquoteSearchKey, BlockquoteSearchKey },
{ NSAccessibilityBoldFontSearchKey, BoldFontSearchKey },
{ NSAccessibilityButtonSearchKey, ButtonSearchKey },
{ NSAccessibilityCheckBoxSearchKey, CheckBoxSearchKey },
{ NSAccessibilityControlSearchKey, ControlSearchKey },
{ NSAccessibilityDifferentTypeSearchKey, DifferentTypeSearchKey },
{ NSAccessibilityFontChangeSearchKey, FontChangeSearchKey },
{ NSAccessibilityFontColorChangeSearchKey, FontColorChangeSearchKey },
{ NSAccessibilityFrameSearchKey, FrameSearchKey },
{ NSAccessibilityGraphicSearchKey, GraphicSearchKey },
{ NSAccessibilityHeadingLevel1SearchKey, HeadingLevel1SearchKey },
{ NSAccessibilityHeadingLevel2SearchKey, HeadingLevel2SearchKey },
{ NSAccessibilityHeadingLevel3SearchKey, HeadingLevel3SearchKey },
{ NSAccessibilityHeadingLevel4SearchKey, HeadingLevel4SearchKey },
{ NSAccessibilityHeadingLevel5SearchKey, HeadingLevel5SearchKey },
{ NSAccessibilityHeadingLevel6SearchKey, HeadingLevel6SearchKey },
{ NSAccessibilityHeadingSameLevelSearchKey, HeadingSameLevelSearchKey },
{ NSAccessibilityHeadingSearchKey, HeadingSearchKey },
{ NSAccessibilityHighlightedSearchKey, HighlightedSearchKey },
{ NSAccessibilityItalicFontSearchKey, ItalicFontSearchKey },
{ NSAccessibilityLandmarkSearchKey, LandmarkSearchKey },
{ NSAccessibilityLinkSearchKey, LinkSearchKey },
{ NSAccessibilityListSearchKey, ListSearchKey },
{ NSAccessibilityLiveRegionSearchKey, LiveRegionSearchKey },
{ NSAccessibilityMisspelledWordSearchKey, MisspelledWordSearchKey },
{ NSAccessibilityOutlineSearchKey, OutlineSearchKey },
{ NSAccessibilityPlainTextSearchKey, PlainTextSearchKey },
{ NSAccessibilityRadioGroupSearchKey, RadioGroupSearchKey },
{ NSAccessibilitySameTypeSearchKey, SameTypeSearchKey },
{ NSAccessibilityStaticTextSearchKey, StaticTextSearchKey },
{ NSAccessibilityStyleChangeSearchKey, StyleChangeSearchKey },
{ NSAccessibilityTableSameLevelSearchKey, TableSameLevelSearchKey },
{ NSAccessibilityTableSearchKey, TableSearchKey },
{ NSAccessibilityTextFieldSearchKey, TextFieldSearchKey },
{ NSAccessibilityUnderlineSearchKey, UnderlineSearchKey },
{ NSAccessibilityUnvisitedLinkSearchKey, UnvisitedLinkSearchKey },
{ NSAccessibilityVisitedLinkSearchKey, VisitedLinkSearchKey }
};
AccessibilitySearchKeyMap* searchKeyMap = new AccessibilitySearchKeyMap;
for (size_t i = 0; i < WTF_ARRAY_LENGTH(searchKeys); i++)
searchKeyMap->set(searchKeys[i].key, searchKeys[i].value);
return searchKeyMap;
}
static AccessibilitySearchKey accessibilitySearchKeyForString(const String& value)
{
if (value.isEmpty())
return AnyTypeSearchKey;
static const AccessibilitySearchKeyMap* searchKeyMap = createAccessibilitySearchKeyMap();
AccessibilitySearchKey searchKey = searchKeyMap->get(value);
return searchKey ? searchKey : AnyTypeSearchKey;
}
AccessibilitySearchCriteria accessibilitySearchCriteriaForSearchPredicateParameterizedAttribute(const NSDictionary *parameterizedAttribute)
{
NSString *directionParameter = [parameterizedAttribute objectForKey:@"AXDirection"];
NSNumber *immediateDescendantsOnlyParameter = [parameterizedAttribute objectForKey:NSAccessibilityImmediateDescendantsOnly];
NSNumber *resultsLimitParameter = [parameterizedAttribute objectForKey:@"AXResultsLimit"];
NSString *searchTextParameter = [parameterizedAttribute objectForKey:@"AXSearchText"];
WebAccessibilityObjectWrapperBase *startElementParameter = [parameterizedAttribute objectForKey:@"AXStartElement"];
NSNumber *visibleOnlyParameter = [parameterizedAttribute objectForKey:@"AXVisibleOnly"];
id searchKeyParameter = [parameterizedAttribute objectForKey:@"AXSearchKey"];
AccessibilitySearchDirection direction = SearchDirectionNext;
if ([directionParameter isKindOfClass:[NSString class]])
direction = [directionParameter isEqualToString:@"AXDirectionNext"] ? SearchDirectionNext : SearchDirectionPrevious;
bool immediateDescendantsOnly = false;
if ([immediateDescendantsOnlyParameter isKindOfClass:[NSNumber class]])
immediateDescendantsOnly = [immediateDescendantsOnlyParameter boolValue];
unsigned resultsLimit = 0;
if ([resultsLimitParameter isKindOfClass:[NSNumber class]])
resultsLimit = [resultsLimitParameter unsignedIntValue];
String searchText;
if ([searchTextParameter isKindOfClass:[NSString class]])
searchText = searchTextParameter;
AccessibilityObject* startElement = nullptr;
if ([startElementParameter isKindOfClass:[WebAccessibilityObjectWrapperBase class]])
startElement = [startElementParameter accessibilityObject];
bool visibleOnly = false;
if ([visibleOnlyParameter isKindOfClass:[NSNumber class]])
visibleOnly = [visibleOnlyParameter boolValue];
AccessibilitySearchCriteria criteria = AccessibilitySearchCriteria(startElement, direction, searchText, resultsLimit, visibleOnly, immediateDescendantsOnly);
if ([searchKeyParameter isKindOfClass:[NSString class]])
criteria.searchKeys.append(accessibilitySearchKeyForString(searchKeyParameter));
else if ([searchKeyParameter isKindOfClass:[NSArray class]]) {
size_t searchKeyCount = static_cast<size_t>([searchKeyParameter count]);
criteria.searchKeys.reserveInitialCapacity(searchKeyCount);
for (size_t i = 0; i < searchKeyCount; ++i) {
NSString *searchKey = [searchKeyParameter objectAtIndex:i];
if ([searchKey isKindOfClass:[NSString class]])
criteria.searchKeys.uncheckedAppend(accessibilitySearchKeyForString(searchKey));
}
}
return criteria;
}
@end
#endif // HAVE(ACCESSIBILITY)