| /* |
| * Copyright (C) 2008, 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 COMPUTER, 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 COMPUTER, 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 "WebAccessibilityObjectWrapperIOS.h" |
| |
| #if HAVE(ACCESSIBILITY) && PLATFORM(IOS) |
| |
| #import "AccessibilityRenderObject.h" |
| #import "AccessibilityTable.h" |
| #import "AccessibilityTableCell.h" |
| #import "Font.h" |
| #import "Frame.h" |
| #import "FrameSelection.h" |
| #import "FrameView.h" |
| #import "HitTestResult.h" |
| #import "HTMLFrameOwnerElement.h" |
| #import "HTMLInputElement.h" |
| #import "HTMLNames.h" |
| #import "IntRect.h" |
| #import "IntSize.h" |
| #import "Range.h" |
| #import "RenderView.h" |
| #import "RuntimeApplicationChecksIOS.h" |
| #import "SVGNames.h" |
| #import "TextIterator.h" |
| #import "WAKScrollView.h" |
| #import "WAKView.h" |
| #import "WAKWindow.h" |
| #import "WebCoreThread.h" |
| #import "visible_units.h" |
| |
| #import <GraphicsServices/GraphicsServices.h> |
| |
| @interface NSObject (AccessibilityPrivate) |
| - (void)_accessibilityUnregister; |
| - (NSString *)accessibilityLabel; |
| - (NSString *)accessibilityValue; |
| - (BOOL)isAccessibilityElement; |
| - (NSInteger)accessibilityElementCount; |
| - (id)accessibilityElementAtIndex:(NSInteger)index; |
| - (NSInteger)indexOfAccessibilityElement:(id)element; |
| @end |
| |
| @interface WebAccessibilityObjectWrapper (AccessibilityPrivate) |
| - (id)_accessibilityWebDocumentView; |
| - (id)accessibilityContainer; |
| - (void)setAccessibilityLabel:(NSString *)label; |
| - (void)setAccessibilityValue:(NSString *)value; |
| - (BOOL)containsUnnaturallySegmentedChildren; |
| - (NSInteger)positionForTextMarker:(id)marker; |
| @end |
| |
| @interface WAKView (iOSAccessibility) |
| - (BOOL)accessibilityIsIgnored; |
| @end |
| |
| using namespace WebCore; |
| using namespace HTMLNames; |
| |
| // These are tokens accessibility uses to denote attributes. |
| static NSString * const UIAccessibilityTokenBlockquoteLevel = @"UIAccessibilityTokenBlockquoteLevel"; |
| static NSString * const UIAccessibilityTokenHeadingLevel = @"UIAccessibilityTokenHeadingLevel"; |
| static NSString * const UIAccessibilityTokenFontName = @"UIAccessibilityTokenFontName"; |
| static NSString * const UIAccessibilityTokenFontFamily = @"UIAccessibilityTokenFontFamily"; |
| static NSString * const UIAccessibilityTokenFontSize = @"UIAccessibilityTokenFontSize"; |
| static NSString * const UIAccessibilityTokenBold = @"UIAccessibilityTokenBold"; |
| static NSString * const UIAccessibilityTokenItalic = @"UIAccessibilityTokenItalic"; |
| static NSString * const UIAccessibilityTokenUnderline = @"UIAccessibilityTokenUnderline"; |
| |
| static AccessibilityObjectWrapper* AccessibilityUnignoredAncestor(AccessibilityObjectWrapper *wrapper) |
| { |
| while (wrapper && ![wrapper isAccessibilityElement]) { |
| AccessibilityObject* object = [wrapper accessibilityObject]; |
| if (!object) |
| break; |
| |
| if ([wrapper isAttachment] && ![[wrapper attachmentView] accessibilityIsIgnored]) |
| break; |
| |
| AccessibilityObject* parentObject = object->parentObjectUnignored(); |
| if (!parentObject) |
| break; |
| |
| wrapper = parentObject->wrapper(); |
| } |
| return wrapper; |
| } |
| |
| #pragma mark Accessibility Text Marker |
| |
| @interface WebAccessibilityTextMarker : NSObject |
| { |
| AXObjectCache* _cache; |
| TextMarkerData _textMarkerData; |
| } |
| |
| + (WebAccessibilityTextMarker *)textMarkerWithVisiblePosition:(VisiblePosition&)visiblePos cache:(AXObjectCache*)cache; |
| |
| @end |
| |
| @implementation WebAccessibilityTextMarker |
| |
| - (id)initWithTextMarker:(TextMarkerData *)data cache:(AXObjectCache*)cache |
| { |
| if (!(self = [super init])) |
| return nil; |
| |
| _cache = cache; |
| memcpy(&_textMarkerData, data, sizeof(TextMarkerData)); |
| return self; |
| } |
| |
| - (id)initWithData:(NSData *)data cache:(AXObjectCache*)cache |
| { |
| if (!(self = [super init])) |
| return nil; |
| |
| _cache = cache; |
| [data getBytes:&_textMarkerData length:sizeof(TextMarkerData)]; |
| |
| return self; |
| } |
| |
| // This is needed for external clients to be able to create a text marker without having a pointer to the cache. |
| - (id)initWithData:(NSData *)data accessibilityObject:(AccessibilityObjectWrapper *)wrapper |
| { |
| WebCore::AccessibilityObject* axObject = [wrapper accessibilityObject]; |
| if (!axObject) |
| return nil; |
| |
| return [self initWithData:data cache:axObject->axObjectCache()]; |
| } |
| |
| + (WebAccessibilityTextMarker *)textMarkerWithVisiblePosition:(VisiblePosition&)visiblePos cache:(AXObjectCache*)cache |
| { |
| TextMarkerData textMarkerData; |
| cache->textMarkerDataForVisiblePosition(textMarkerData, visiblePos); |
| |
| return [[[WebAccessibilityTextMarker alloc] initWithTextMarker:&textMarkerData cache:cache] autorelease]; |
| } |
| |
| - (NSData *)dataRepresentation |
| { |
| return [NSData dataWithBytes:&_textMarkerData length:sizeof(TextMarkerData)]; |
| } |
| |
| - (VisiblePosition)visiblePosition |
| { |
| return _cache->visiblePositionForTextMarkerData(_textMarkerData); |
| } |
| |
| - (NSString *)description |
| { |
| return [NSString stringWithFormat:@"[AXTextMarker %p] = node: %p offset: %d", self, _textMarkerData.node, _textMarkerData.offset]; |
| } |
| |
| @end |
| |
| @implementation WebAccessibilityObjectWrapper |
| |
| - (id)initWithAccessibilityObject:(AccessibilityObject*)axObject |
| { |
| self = [super initWithAccessibilityObject:axObject]; |
| if (!self) |
| return nil; |
| |
| // Initialize to a sentinel value. |
| m_accessibilityTraitsFromAncestor = ULLONG_MAX; |
| m_isAccessibilityElement = -1; |
| |
| return self; |
| } |
| |
| - (void)detach |
| { |
| // rdar://8798960 Make sure the object is gone early, so that anything _accessibilityUnregister |
| // does can't call back into the render tree. |
| m_object = 0; |
| |
| if ([self respondsToSelector:@selector(_accessibilityUnregister)]) |
| [self _accessibilityUnregister]; |
| } |
| |
| - (void)dealloc |
| { |
| // We should have been detached before deallocated. |
| ASSERT(!m_object); |
| [super dealloc]; |
| } |
| |
| - (BOOL)_prepareAccessibilityCall |
| { |
| // rdar://7980318 if we start a call, then block in WebThreadLock(), then we're dealloced on another, thread, we could |
| // crash, so we should retain ourself for the duration of usage here. |
| [[self retain] autorelease]; |
| |
| WebThreadLock(); |
| |
| // If we came back from our thread lock and we were detached, we will no longer have an m_object. |
| if (!m_object) |
| return NO; |
| |
| m_object->updateBackingStore(); |
| if (!m_object) |
| return NO; |
| |
| return YES; |
| } |
| |
| // These are here so that we don't have to import AXRuntime. |
| // The methods will be swizzled when the accessibility bundle is loaded. |
| |
| - (uint64_t)_axLinkTrait { return (1 << 0); } |
| - (uint64_t)_axVisitedTrait { return (1 << 1); } |
| - (uint64_t)_axHeaderTrait { return (1 << 2); } |
| - (uint64_t)_axContainedByListTrait { return (1 << 3); } |
| - (uint64_t)_axContainedByTableTrait { return (1 << 4); } |
| - (uint64_t)_axContainedByLandmarkTrait { return (1 << 5); } |
| - (uint64_t)_axWebContentTrait { return (1 << 6); } |
| - (uint64_t)_axSecureTextFieldTrait { return (1 << 7); } |
| - (uint64_t)_axTextEntryTrait { return (1 << 8); } |
| - (uint64_t)_axHasTextCursorTrait { return (1 << 9); } |
| - (uint64_t)_axTextOperationsAvailableTrait { return (1 << 10); } |
| - (uint64_t)_axImageTrait { return (1 << 11); } |
| - (uint64_t)_axTabButtonTrait { return (1 << 12); } |
| - (uint64_t)_axButtonTrait { return (1 << 13); } |
| - (uint64_t)_axToggleTrait { return (1 << 14); } |
| - (uint64_t)_axPopupButtonTrait { return (1 << 15); } |
| - (uint64_t)_axStaticTextTrait { return (1 << 16); } |
| - (uint64_t)_axAdjustableTrait { return (1 << 17); } |
| - (uint64_t)_axMenuItemTrait { return (1 << 18); } |
| - (uint64_t)_axSelectedTrait { return (1 << 19); } |
| - (uint64_t)_axNotEnabledTrait { return (1 << 20); } |
| - (uint64_t)_axRadioButtonTrait { return (1 << 21); } |
| |
| - (BOOL)accessibilityCanFuzzyHitTest |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| AccessibilityRole role = m_object->roleValue(); |
| // Elements that can be returned when performing fuzzy hit testing. |
| switch (role) { |
| case ButtonRole: |
| case CheckBoxRole: |
| case ComboBoxRole: |
| case DisclosureTriangleRole: |
| case HeadingRole: |
| case ImageMapLinkRole: |
| case ImageRole: |
| case LinkRole: |
| case ListBoxRole: |
| case ListBoxOptionRole: |
| case MenuButtonRole: |
| case MenuItemRole: |
| case PopUpButtonRole: |
| case RadioButtonRole: |
| case ScrollBarRole: |
| case SliderRole: |
| case StaticTextRole: |
| case TabRole: |
| case TextFieldRole: |
| return !m_object->accessibilityIsIgnored(); |
| default: |
| return false; |
| } |
| } |
| |
| - (AccessibilityObjectWrapper *)accessibilityPostProcessHitTest:(CGPoint)point |
| { |
| UNUSED_PARAM(point); |
| // The UIKit accessibility wrapper will override this and perform the post process hit test. |
| return nil; |
| } |
| |
| - (id)accessibilityHitTest:(CGPoint)point |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| // Try a fuzzy hit test first to find an accessible element. |
| RefPtr<AccessibilityObject> axObject; |
| { |
| AXAttributeCacheEnabler enableCache(m_object->axObjectCache()); |
| axObject = m_object->accessibilityHitTest(IntPoint(point)); |
| } |
| |
| if (!axObject) |
| return nil; |
| |
| // If this is a good accessible object to return, no extra work is required. |
| if ([axObject->wrapper() accessibilityCanFuzzyHitTest]) |
| return AccessibilityUnignoredAncestor(axObject->wrapper()); |
| |
| // Check to see if we can post-process this hit test to find a better candidate. |
| AccessibilityObjectWrapper* wrapper = [axObject->wrapper() accessibilityPostProcessHitTest:point]; |
| if (wrapper) |
| return AccessibilityUnignoredAncestor(wrapper); |
| |
| // Fall back to default behavior. |
| return AccessibilityUnignoredAncestor(axObject->wrapper()); |
| } |
| |
| - (NSInteger)accessibilityElementCount |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| AXAttributeCacheEnabler enableCache(m_object->axObjectCache()); |
| if ([self isAttachment]) |
| return [[self attachmentView] accessibilityElementCount]; |
| |
| return m_object->children().size(); |
| } |
| |
| - (id)accessibilityElementAtIndex:(NSInteger)index |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| AXAttributeCacheEnabler enableCache(m_object->axObjectCache()); |
| if ([self isAttachment]) |
| return [[self attachmentView] accessibilityElementAtIndex:index]; |
| |
| AccessibilityObject::AccessibilityChildrenVector children = m_object->children(); |
| if (static_cast<unsigned>(index) >= children.size()) |
| return nil; |
| |
| AccessibilityObjectWrapper* wrapper = children[index]->wrapper(); |
| if (children[index]->isAttachment()) |
| return [wrapper attachmentView]; |
| |
| return wrapper; |
| } |
| |
| - (NSInteger)indexOfAccessibilityElement:(id)element |
| { |
| if (![self _prepareAccessibilityCall]) |
| return NSNotFound; |
| |
| AXAttributeCacheEnabler enableCache(m_object->axObjectCache()); |
| if ([self isAttachment]) |
| return [[self attachmentView] indexOfAccessibilityElement:element]; |
| |
| AccessibilityObject::AccessibilityChildrenVector children = m_object->children(); |
| unsigned count = children.size(); |
| for (unsigned k = 0; k < count; ++k) { |
| AccessibilityObjectWrapper* wrapper = children[k]->wrapper(); |
| if (wrapper == element || (children[k]->isAttachment() && [wrapper attachmentView] == element)) |
| return k; |
| } |
| |
| return NSNotFound; |
| } |
| |
| - (CGPathRef)_accessibilityPath |
| { |
| if (![self _prepareAccessibilityCall]) |
| return NULL; |
| |
| if (!m_object->supportsPath()) |
| return NULL; |
| |
| Path path = m_object->elementPath(); |
| if (path.isEmpty()) |
| return NULL; |
| |
| return [self convertPathToScreenSpace:path]; |
| } |
| |
| - (NSString *)accessibilityLanguage |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| return m_object->language(); |
| } |
| |
| - (BOOL)_accessibilityIsLandmarkRole:(AccessibilityRole)role |
| { |
| switch (role) { |
| case LandmarkApplicationRole: |
| case LandmarkBannerRole: |
| case LandmarkComplementaryRole: |
| case LandmarkContentInfoRole: |
| case LandmarkMainRole: |
| case LandmarkNavigationRole: |
| case LandmarkSearchRole: |
| return YES; |
| default: |
| return NO; |
| } |
| } |
| |
| - (AccessibilityObjectWrapper*)_accessibilityListAncestor |
| { |
| for (AccessibilityObject* parent = m_object->parentObject(); parent != nil; parent = parent->parentObject()) { |
| AccessibilityRole role = parent->roleValue(); |
| if (role == ListRole || role == ListBoxRole) |
| return parent->wrapper(); |
| } |
| |
| return nil; |
| } |
| |
| - (AccessibilityObjectWrapper*)_accessibilityLandmarkAncestor |
| { |
| for (AccessibilityObject* parent = m_object->parentObject(); parent != nil; parent = parent->parentObject()) { |
| if ([self _accessibilityIsLandmarkRole:parent->roleValue()]) |
| return parent->wrapper(); |
| } |
| |
| return nil; |
| } |
| |
| - (AccessibilityObjectWrapper*)_accessibilityTableAncestor |
| { |
| for (AccessibilityObject* parent = m_object->parentObject(); parent != nil; parent = parent->parentObject()) { |
| if (parent->roleValue() == TableRole) |
| return parent->wrapper(); |
| } |
| |
| return nil; |
| } |
| |
| - (uint64_t)_accessibilityTraitsFromAncestors |
| { |
| uint64_t traits = 0; |
| AccessibilityRole role = m_object->roleValue(); |
| |
| // Trait information also needs to be gathered from the parents above the object. |
| // The parentObject is needed instead of the unignoredParentObject, because a table might be ignored, but information still needs to be gathered from it. |
| for (AccessibilityObject* parent = m_object->parentObject(); parent != nil; parent = parent->parentObject()) { |
| AccessibilityRole parentRole = parent->roleValue(); |
| if (parentRole == WebAreaRole) |
| break; |
| |
| switch (parentRole) { |
| case LinkRole: |
| case WebCoreLinkRole: |
| traits |= [self _axLinkTrait]; |
| if (parent->isVisited()) |
| traits |= [self _axVisitedTrait]; |
| break; |
| case HeadingRole: |
| { |
| traits |= [self _axHeaderTrait]; |
| // If this object has the header trait, we should set the value |
| // to the heading level. If it was a static text element, we need to store |
| // the value as the label, because the heading level needs to the value. |
| AccessibilityObjectWrapper* wrapper = parent->wrapper(); |
| if (role == StaticTextRole) |
| [self setAccessibilityLabel:m_object->stringValue()]; |
| [self setAccessibilityValue:[wrapper accessibilityValue]]; |
| break; |
| } |
| case ListBoxRole: |
| case ListRole: |
| traits |= [self _axContainedByListTrait]; |
| break; |
| case TableRole: |
| traits |= [self _axContainedByTableTrait]; |
| break; |
| default: |
| if ([self _accessibilityIsLandmarkRole:parentRole]) |
| traits |= [self _axContainedByLandmarkTrait]; |
| break; |
| } |
| } |
| |
| return traits; |
| } |
| |
| - (uint64_t)accessibilityTraits |
| { |
| if (![self _prepareAccessibilityCall]) |
| return 0; |
| |
| AccessibilityRole role = m_object->roleValue(); |
| uint64_t traits = [self _axWebContentTrait]; |
| switch (role) { |
| case LinkRole: |
| case WebCoreLinkRole: |
| traits |= [self _axLinkTrait]; |
| if (m_object->isVisited()) |
| traits |= [self _axVisitedTrait]; |
| break; |
| // TextFieldRole is intended to fall through to TextAreaRole, in order to pick up the text entry and text cursor traits. |
| case TextFieldRole: |
| if (m_object->isPasswordField()) |
| traits |= [self _axSecureTextFieldTrait]; |
| case TextAreaRole: |
| traits |= [self _axTextEntryTrait]; |
| if (m_object->isFocused()) |
| traits |= ([self _axHasTextCursorTrait] | [self _axTextOperationsAvailableTrait]); |
| break; |
| case ImageRole: |
| traits |= [self _axImageTrait]; |
| break; |
| case TabRole: |
| traits |= [self _axTabButtonTrait]; |
| break; |
| case ButtonRole: |
| traits |= [self _axButtonTrait]; |
| if (m_object->isPressed()) |
| traits |= [self _axToggleTrait]; |
| break; |
| case PopUpButtonRole: |
| traits |= [self _axPopupButtonTrait]; |
| break; |
| case RadioButtonRole: |
| traits |= [self _axRadioButtonTrait] | [self _axToggleTrait]; |
| break; |
| case CheckBoxRole: |
| traits |= ([self _axButtonTrait] | [self _axToggleTrait]); |
| break; |
| case HeadingRole: |
| traits |= [self _axHeaderTrait]; |
| break; |
| case StaticTextRole: |
| traits |= [self _axStaticTextTrait]; |
| break; |
| case SliderRole: |
| traits |= [self _axAdjustableTrait]; |
| break; |
| case MenuButtonRole: |
| case MenuItemRole: |
| traits |= [self _axMenuItemTrait]; |
| break; |
| default: |
| break; |
| } |
| |
| if (m_object->isSelected()) |
| traits |= [self _axSelectedTrait]; |
| |
| if (!m_object->isEnabled()) |
| traits |= [self _axNotEnabledTrait]; |
| |
| if (m_accessibilityTraitsFromAncestor == ULLONG_MAX) |
| m_accessibilityTraitsFromAncestor = [self _accessibilityTraitsFromAncestors]; |
| |
| traits |= m_accessibilityTraitsFromAncestor; |
| |
| return traits; |
| } |
| |
| - (BOOL)isSVGGroupElement |
| { |
| // If an SVG group element has a title, it should be an accessible element on iOS. |
| #if ENABLE(SVG) |
| Node* node = m_object->node(); |
| if (node && node->hasTagName(SVGNames::gTag) && [[self accessibilityLabel] length] > 0) |
| return YES; |
| #endif |
| |
| return NO; |
| } |
| |
| - (BOOL)determineIsAccessibilityElement |
| { |
| if (!m_object) |
| return false; |
| |
| // Honor when something explicitly makes this an element (super will contain that logic) |
| if ([super isAccessibilityElement]) |
| return YES; |
| |
| m_object->updateBackingStore(); |
| |
| switch (m_object->roleValue()) { |
| case TextFieldRole: |
| case TextAreaRole: |
| case ButtonRole: |
| case PopUpButtonRole: |
| case CheckBoxRole: |
| case RadioButtonRole: |
| case SliderRole: |
| case MenuButtonRole: |
| case ValueIndicatorRole: |
| case ImageRole: |
| case MenuItemRole: |
| case IncrementorRole: |
| case ComboBoxRole: |
| case DisclosureTriangleRole: |
| case ImageMapRole: |
| case ListMarkerRole: |
| case ListBoxOptionRole: |
| case TabRole: |
| case DocumentMathRole: |
| return true; |
| case StaticTextRole: |
| { |
| // Many text elements only contain a space. |
| if (![[[self accessibilityLabel] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]] length]) |
| return false; |
| |
| // Text elements that are just pieces of links or headers should not be exposed. |
| if ([AccessibilityUnignoredAncestor([self accessibilityContainer]) containsUnnaturallySegmentedChildren]) |
| return false; |
| return true; |
| } |
| |
| // Don't expose headers as elements; instead expose their children as elements, with the header trait (unless they have no children) |
| case HeadingRole: |
| if (![self accessibilityElementCount]) |
| return true; |
| return false; |
| |
| // Links can sometimes be elements (when they only contain static text or don't contain anything). |
| // They should not be elements when containing text and other types. |
| case WebCoreLinkRole: |
| case LinkRole: |
| if ([self containsUnnaturallySegmentedChildren] || ![self accessibilityElementCount]) |
| return true; |
| return false; |
| case GroupRole: |
| if ([self isSVGGroupElement]) |
| return true; |
| // All other elements are ignored on the iphone. |
| default: |
| case UnknownRole: |
| case TabGroupRole: |
| case ScrollAreaRole: |
| case TableRole: |
| case ApplicationRole: |
| case RadioGroupRole: |
| case ListRole: |
| case ListBoxRole: |
| case ScrollBarRole: |
| case MenuBarRole: |
| case MenuRole: |
| case ColumnRole: |
| case RowRole: |
| case ToolbarRole: |
| case BusyIndicatorRole: |
| case ProgressIndicatorRole: |
| case WindowRole: |
| case DrawerRole: |
| case SystemWideRole: |
| case OutlineRole: |
| case BrowserRole: |
| case SplitGroupRole: |
| case SplitterRole: |
| case ColorWellRole: |
| case GrowAreaRole: |
| case SheetRole: |
| case HelpTagRole: |
| case MatteRole: |
| case RulerRole: |
| case RulerMarkerRole: |
| case GridRole: |
| case WebAreaRole: |
| return false; |
| } |
| } |
| |
| - (BOOL)isAccessibilityElement |
| { |
| if (![self _prepareAccessibilityCall]) |
| return NO; |
| |
| if (m_isAccessibilityElement == -1) |
| m_isAccessibilityElement = [self determineIsAccessibilityElement]; |
| |
| return m_isAccessibilityElement; |
| } |
| |
| - (BOOL)stringValueShouldBeUsedInLabel |
| { |
| if (m_object->isTextControl()) |
| return NO; |
| if (m_object->roleValue() == PopUpButtonRole) |
| return NO; |
| if (m_object->isFileUploadButton()) |
| return NO; |
| |
| return YES; |
| } |
| |
| - (BOOL)fileUploadButtonReturnsValueInTitle |
| { |
| return NO; |
| } |
| |
| static void appendStringToResult(NSMutableString *result, NSString *string) |
| { |
| ASSERT(result); |
| if (![string length]) |
| return; |
| if ([result length]) |
| [result appendString:@", "]; |
| [result appendString:string]; |
| } |
| |
| - (NSString *)accessibilityLabel |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| // check if the label was overriden |
| NSString *label = [super accessibilityLabel]; |
| if (label) |
| return label; |
| |
| // iOS doesn't distinguish between a title and description field, |
| // so concatentation will yield the best result. |
| NSString *axTitle = [self accessibilityTitle]; |
| NSString *axDescription = [self accessibilityDescription]; |
| NSString *landmarkDescription = [self ariaLandmarkRoleDescription]; |
| |
| NSMutableString *result = [NSMutableString string]; |
| |
| appendStringToResult(result, axTitle); |
| appendStringToResult(result, axDescription); |
| if ([self stringValueShouldBeUsedInLabel]) { |
| NSString *valueLabel = m_object->stringValue(); |
| valueLabel = [valueLabel stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]; |
| appendStringToResult(result, valueLabel); |
| } |
| appendStringToResult(result, landmarkDescription); |
| |
| return [result length] ? result : nil; |
| } |
| |
| - (AccessibilityTableCell*)tableCellParent |
| { |
| // Find if this element is in a table cell. |
| AccessibilityObject* cell = 0; |
| for (cell = m_object; cell && !cell->isTableCell(); cell = cell->parentObject()) |
| { } |
| |
| if (!cell) |
| return 0; |
| |
| return static_cast<AccessibilityTableCell*>(cell); |
| } |
| |
| - (AccessibilityTable*)tableParent |
| { |
| // Find if the parent table for the table cell. |
| AccessibilityObject* parentTable = 0; |
| for (parentTable = m_object; parentTable && !parentTable->isDataTable(); parentTable = parentTable->parentObject()) |
| { } |
| |
| if (!parentTable) |
| return 0; |
| |
| return static_cast<AccessibilityTable*>(parentTable); |
| } |
| |
| - (id)accessibilityTitleElement |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| AccessibilityObject* titleElement = m_object->titleUIElement(); |
| if (titleElement) |
| return titleElement->wrapper(); |
| |
| return nil; |
| } |
| |
| // Meant to return row or column headers (or other things as the future permits). |
| - (NSArray *)accessibilityHeaderElements |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| AccessibilityTableCell* tableCell = [self tableCellParent]; |
| if (!tableCell) |
| return nil; |
| |
| AccessibilityTable* table = [self tableParent]; |
| if (!table) |
| return nil; |
| |
| // Get the row and column range, so we can use them to find the headers. |
| pair<unsigned, unsigned> rowRange; |
| pair<unsigned, unsigned> columnRange; |
| tableCell->rowIndexRange(rowRange); |
| tableCell->columnIndexRange(columnRange); |
| |
| AccessibilityObject::AccessibilityChildrenVector rowHeaders; |
| AccessibilityObject::AccessibilityChildrenVector columnHeaders; |
| table->rowHeaders(rowHeaders); |
| table->columnHeaders(columnHeaders); |
| |
| NSMutableArray *headers = [NSMutableArray array]; |
| |
| unsigned columnRangeIndex = static_cast<unsigned>(columnRange.first); |
| if (columnRangeIndex < columnHeaders.size()) { |
| RefPtr<AccessibilityObject> columnHeader = columnHeaders[columnRange.first]; |
| AccessibilityObjectWrapper* wrapper = columnHeader->wrapper(); |
| if (wrapper) |
| [headers addObject:wrapper]; |
| } |
| |
| unsigned rowRangeIndex = static_cast<unsigned>(rowRange.first); |
| if (rowRangeIndex < rowHeaders.size()) { |
| RefPtr<AccessibilityObject> rowHeader = rowHeaders[rowRange.first]; |
| AccessibilityObjectWrapper* wrapper = rowHeader->wrapper(); |
| if (wrapper) |
| [headers addObject:wrapper]; |
| } |
| |
| return headers; |
| } |
| |
| - (id)accessibilityElementForRow:(NSInteger)row andColumn:(NSInteger)column |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| AccessibilityTable* table = [self tableParent]; |
| if (!table) |
| return nil; |
| |
| AccessibilityTableCell* cell = table->cellForColumnAndRow(column, row); |
| if (!cell) |
| return nil; |
| return cell->wrapper(); |
| } |
| |
| - (NSRange)accessibilityRowRange |
| { |
| if (![self _prepareAccessibilityCall]) |
| return NSMakeRange(NSNotFound, 0); |
| |
| if (m_object->isRadioButton()) { |
| AccessibilityObject::AccessibilityChildrenVector radioButtonSiblings; |
| m_object->linkedUIElements(radioButtonSiblings); |
| if (radioButtonSiblings.size() <= 1) |
| return NSMakeRange(NSNotFound, 0); |
| |
| return NSMakeRange(radioButtonSiblings.find(m_object), radioButtonSiblings.size()); |
| } |
| |
| AccessibilityTableCell* tableCell = [self tableCellParent]; |
| if (!tableCell) |
| return NSMakeRange(NSNotFound, 0); |
| |
| pair<unsigned, unsigned> rowRange; |
| tableCell->rowIndexRange(rowRange); |
| return NSMakeRange(rowRange.first, rowRange.second); |
| } |
| |
| - (NSRange)accessibilityColumnRange |
| { |
| if (![self _prepareAccessibilityCall]) |
| return NSMakeRange(NSNotFound, 0); |
| |
| AccessibilityTableCell* tableCell = [self tableCellParent]; |
| if (!tableCell) |
| return NSMakeRange(NSNotFound, 0); |
| |
| pair<unsigned, unsigned> columnRange; |
| tableCell->columnIndexRange(columnRange); |
| return NSMakeRange(columnRange.first, columnRange.second); |
| } |
| |
| - (NSString *)accessibilityPlaceholderValue |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| return m_object->placeholderValue(); |
| } |
| |
| - (NSString *)accessibilityValue |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| // check if the value was overriden |
| NSString *value = [super accessibilityValue]; |
| if (value) |
| return value; |
| |
| if (m_object->isCheckboxOrRadio()) { |
| switch (m_object->checkboxOrRadioValue()) { |
| case ButtonStateOff: |
| return [NSString stringWithFormat:@"%d", 0]; |
| case ButtonStateOn: |
| return [NSString stringWithFormat:@"%d", 1]; |
| case ButtonStateMixed: |
| return [NSString stringWithFormat:@"%d", 2]; |
| } |
| ASSERT_NOT_REACHED(); |
| return [NSString stringWithFormat:@"%d", 0]; |
| } |
| |
| if (m_object->isButton() && m_object->isPressed()) |
| return [NSString stringWithFormat:@"%d", 1]; |
| |
| // rdar://8131388 WebKit should expose the same info as UIKit for its password fields. |
| if (m_object->isPasswordField()) { |
| int passwordLength = m_object->accessibilityPasswordFieldLength(); |
| NSMutableString* string = [NSMutableString string]; |
| for (int k = 0; k < passwordLength; ++k) |
| [string appendString:@"•"]; |
| return string; |
| } |
| |
| // A text control should return its text data as the axValue (per iPhone AX API). |
| if (![self stringValueShouldBeUsedInLabel]) |
| return m_object->stringValue(); |
| |
| if (m_object->isProgressIndicator() || m_object->isSlider()) { |
| // Prefer a valueDescription if provided by the author (through aria-valuetext). |
| String valueDescription = m_object->valueDescription(); |
| if (!valueDescription.isEmpty()) |
| return valueDescription; |
| |
| return [NSString stringWithFormat:@"%.2f", m_object->valueForRange()]; |
| } |
| |
| if (m_object->isHeading()) |
| return [NSString stringWithFormat:@"%d", m_object->headingLevel()]; |
| |
| return nil; |
| } |
| |
| - (BOOL)accessibilityIsComboBox |
| { |
| if (![self _prepareAccessibilityCall]) |
| return NO; |
| |
| return m_object->roleValue() == ComboBoxRole; |
| } |
| |
| - (NSString *)accessibilityHint |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| return [self accessibilityHelpText]; |
| } |
| |
| - (NSURL *)accessibilityURL |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| KURL url = m_object->url(); |
| if (url.isNull()) |
| return nil; |
| return (NSURL*)url; |
| } |
| |
| - (CGPoint)convertPointToScreenSpace:(FloatPoint &)point |
| { |
| if (!m_object) |
| return CGPointZero; |
| |
| CGPoint cgPoint = CGPointMake(point.x(), point.y()); |
| |
| FrameView* frameView = m_object->documentFrameView(); |
| if (frameView) { |
| WAKView* view = frameView->documentView(); |
| cgPoint = [view convertPoint:cgPoint toView:nil]; |
| } |
| |
| // we need the web document view to give us our final screen coordinates |
| // because that can take account of the scroller |
| id webDocument = [self _accessibilityWebDocumentView]; |
| if (webDocument) |
| cgPoint = [webDocument convertPoint:cgPoint toView:nil]; |
| |
| return cgPoint; |
| } |
| |
| - (CGRect)convertRectToScreenSpace:(IntRect &)rect |
| { |
| if (!m_object) |
| return CGRectZero; |
| |
| CGSize size = CGSizeMake(rect.size().width(), rect.size().height()); |
| CGPoint point = CGPointMake(rect.x(), rect.y()); |
| |
| CGRect frame = CGRectMake(point.x, point.y, size.width, size.height); |
| |
| FrameView* frameView = m_object->documentFrameView(); |
| if (frameView) { |
| WAKView* view = frameView->documentView(); |
| frame = [view convertRect:frame toView:nil]; |
| } |
| |
| // we need the web document view to give us our final screen coordinates |
| // because that can take account of the scroller |
| id webDocument = [self _accessibilityWebDocumentView]; |
| if (webDocument) |
| frame = [webDocument convertRect:frame toView:nil]; |
| |
| return frame; |
| } |
| |
| // Used by UIKit accessibility bundle to help determine distance during a hit-test. |
| - (CGRect)accessibilityElementRect |
| { |
| if (![self _prepareAccessibilityCall]) |
| return CGRectZero; |
| |
| LayoutRect rect = m_object->elementRect(); |
| return CGRectMake(rect.x(), rect.y(), rect.width(), rect.height()); |
| } |
| |
| // The "center point" is where VoiceOver will "press" an object. This may not be the actual |
| // center of the accessibilityFrame |
| - (CGPoint)accessibilityActivationPoint |
| { |
| if (![self _prepareAccessibilityCall]) |
| return CGPointZero; |
| |
| IntRect rect = pixelSnappedIntRect(m_object->boundingBoxRect()); |
| CGRect cgRect = [self convertRectToScreenSpace:rect]; |
| return CGPointMake(CGRectGetMidX(cgRect), CGRectGetMidY(cgRect)); |
| } |
| |
| - (CGRect)accessibilityFrame |
| { |
| if (![self _prepareAccessibilityCall]) |
| return CGRectZero; |
| |
| IntRect rect = pixelSnappedIntRect(m_object->elementRect()); |
| return [self convertRectToScreenSpace:rect]; |
| } |
| |
| // Checks whether a link contains only static text and images (and has been divided unnaturally by <spans> and other nefarious mechanisms). |
| - (BOOL)containsUnnaturallySegmentedChildren |
| { |
| if (!m_object) |
| return NO; |
| |
| AccessibilityRole role = m_object->roleValue(); |
| if (role != LinkRole && role != WebCoreLinkRole) |
| return NO; |
| |
| AccessibilityObject::AccessibilityChildrenVector children = m_object->children(); |
| unsigned childrenSize = children.size(); |
| |
| // If there's only one child, then it doesn't have segmented children. |
| if (childrenSize == 1) |
| return NO; |
| |
| for (unsigned i = 0; i < childrenSize; ++i) { |
| AccessibilityRole role = children[i]->roleValue(); |
| if (role != StaticTextRole && role != ImageRole && role != GroupRole) |
| return NO; |
| } |
| |
| return YES; |
| } |
| |
| - (id)accessibilityContainer |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| AXAttributeCacheEnabler enableCache(m_object->axObjectCache()); |
| |
| // As long as there's a parent wrapper, that's the correct chain to climb. |
| AccessibilityObject* parent = m_object->parentObjectUnignored(); |
| if (parent) |
| return parent->wrapper(); |
| |
| // The only object without a parent wrapper should be a scroll view. |
| ASSERT(m_object->isAccessibilityScrollView()); |
| |
| // Verify this is the top document. If not, we might need to go through the platform widget. |
| FrameView* frameView = m_object->documentFrameView(); |
| Document* document = m_object->document(); |
| if (document && frameView && document != document->topDocument()) |
| return frameView->platformWidget(); |
| |
| // The top scroll view's parent is the web document view. |
| return [self _accessibilityWebDocumentView]; |
| } |
| |
| - (id)accessibilityFocusedUIElement |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| AccessibilityObject* focusedObj = m_object->focusedUIElement(); |
| |
| if (!focusedObj) |
| return nil; |
| |
| return focusedObj->wrapper(); |
| } |
| |
| - (id)_accessibilityWebDocumentView |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| // This method performs the crucial task of connecting to the UIWebDocumentView. |
| // This is needed to correctly calculate the screen position of the AX object. |
| static Class webViewClass = nil; |
| if (!webViewClass) |
| webViewClass = NSClassFromString(@"WebView"); |
| |
| if (!webViewClass) |
| return nil; |
| |
| FrameView* frameView = m_object->documentFrameView(); |
| |
| if (!frameView) |
| return nil; |
| |
| // If this is the top level frame, the UIWebDocumentView should be returned. |
| id parentView = frameView->documentView(); |
| while (parentView && ![parentView isKindOfClass:webViewClass]) |
| parentView = [parentView superview]; |
| |
| // The parentView should have an accessibilityContainer, if the UIKit accessibility bundle was loaded. |
| // The exception is DRT, which tests accessibility without the entire system turning accessibility on. Hence, |
| // this check should be valid for everything except DRT. |
| ASSERT([parentView accessibilityContainer] || applicationIsDumpRenderTree()); |
| |
| return [parentView accessibilityContainer]; |
| } |
| |
| - (NSArray *)_accessibilityNextElementsWithCount:(UInt32)count |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| return [[self _accessibilityWebDocumentView] _accessibilityNextElementsWithCount:count]; |
| } |
| |
| - (NSArray *)_accessibilityPreviousElementsWithCount:(UInt32)count |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| return [[self _accessibilityWebDocumentView] _accessibilityPreviousElementsWithCount:count]; |
| } |
| |
| - (BOOL)accessibilityRequired |
| { |
| if (![self _prepareAccessibilityCall]) |
| return NO; |
| |
| return m_object->isRequired(); |
| } |
| |
| - (NSArray *)accessibilityFlowToElements |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| AccessibilityObject::AccessibilityChildrenVector children; |
| m_object->ariaFlowToElements(children); |
| |
| unsigned length = children.size(); |
| NSMutableArray* array = [NSMutableArray arrayWithCapacity:length]; |
| for (unsigned i = 0; i < length; ++i) { |
| AccessibilityObjectWrapper* wrapper = children[i]->wrapper(); |
| ASSERT(wrapper); |
| if (!wrapper) |
| continue; |
| |
| if (children[i]->isAttachment() && [wrapper attachmentView]) |
| [array addObject:[wrapper attachmentView]]; |
| else |
| [array addObject:wrapper]; |
| } |
| return array; |
| } |
| |
| - (id)accessibilityLinkedElement |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| // If this static text inside of a link, it should use its parent's linked element. |
| AccessibilityObject* element = m_object; |
| if (m_object->roleValue() == StaticTextRole && m_object->parentObjectUnignored()->isLink()) |
| element = m_object->parentObjectUnignored(); |
| |
| AccessibilityObject::AccessibilityChildrenVector children; |
| element->linkedUIElements(children); |
| if (children.size() == 0) |
| return nil; |
| |
| return children[0]->wrapper(); |
| } |
| |
| |
| - (BOOL)isAttachment |
| { |
| if (!m_object) |
| return NO; |
| |
| return m_object->isAttachment(); |
| } |
| |
| - (void)_accessibilityActivate |
| { |
| if (![self _prepareAccessibilityCall]) |
| return; |
| |
| m_object->press(); |
| } |
| |
| - (id)attachmentView |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| ASSERT([self isAttachment]); |
| Widget* widget = m_object->widgetForAttachmentView(); |
| if (!widget) |
| return nil; |
| return widget->platformWidget(); |
| } |
| |
| static RenderObject* rendererForView(WAKView* view) |
| { |
| if (![view conformsToProtocol:@protocol(WebCoreFrameView)]) |
| return 0; |
| |
| WAKView<WebCoreFrameView>* frameView = (WAKView<WebCoreFrameView>*)view; |
| Frame* frame = [frameView _web_frame]; |
| if (!frame) |
| return 0; |
| |
| Node* node = frame->document()->ownerElement(); |
| if (!node) |
| return 0; |
| |
| return node->renderer(); |
| } |
| |
| - (id)_accessibilityParentForSubview:(id)subview |
| { |
| RenderObject* renderer = rendererForView(subview); |
| if (!renderer) |
| return nil; |
| |
| AccessibilityObject* obj = renderer->document()->axObjectCache()->getOrCreate(renderer); |
| if (obj) |
| return obj->parentObjectUnignored()->wrapper(); |
| return nil; |
| } |
| |
| - (void)postFocusChangeNotification |
| { |
| // The UIKit accessibility wrapper will override and post appropriate notification. |
| } |
| |
| - (void)postSelectedTextChangeNotification |
| { |
| // The UIKit accessibility wrapper will override and post appropriate notification. |
| } |
| |
| - (void)postLayoutChangeNotification |
| { |
| // The UIKit accessibility wrapper will override and post appropriate notification. |
| } |
| |
| - (void)postLiveRegionChangeNotification |
| { |
| // The UIKit accessibility wrapper will override and post appropriate notification. |
| } |
| |
| - (void)postLoadCompleteNotification |
| { |
| // The UIKit accessibility wrapper will override and post appropriate notification. |
| } |
| |
| - (void)postChildrenChangedNotification |
| { |
| // The UIKit accessibility wrapper will override and post appropriate notification. |
| } |
| |
| - (void)postInvalidStatusChangedNotification |
| { |
| // The UIKit accessibility wrapper will override and post appropriate notification. |
| } |
| |
| - (void)accessibilityElementDidBecomeFocused |
| { |
| if (![self _prepareAccessibilityCall]) |
| return; |
| |
| // The focused VoiceOver element might be the text inside a link. |
| // In those cases we should focus on the link itself. |
| for (AccessibilityObject* object = m_object; object != nil; object = object->parentObject()) { |
| if (object->roleValue() == WebAreaRole) |
| break; |
| |
| if (object->canSetFocusAttribute()) { |
| object->setFocused(true); |
| break; |
| } |
| } |
| } |
| |
| - (void)accessibilityModifySelection:(TextGranularity)granularity increase:(BOOL)increase |
| { |
| if (![self _prepareAccessibilityCall]) |
| return; |
| |
| FrameSelection* frameSelection = m_object->document()->frame()->selection(); |
| VisibleSelection selection = m_object->selection(); |
| VisiblePositionRange range = m_object->visiblePositionRange(); |
| |
| // Before a selection with length exists, the cursor position needs to move to the right starting place. |
| // That should be the beginning of this element (range.start). However, if the cursor is already within the |
| // range of this element (the cursor is represented by selection), then the cursor does not need to move. |
| if (frameSelection->isNone() && (selection.visibleStart() < range.start || selection.visibleEnd() > range.end)) |
| frameSelection->moveTo(range.start, UserTriggered); |
| |
| frameSelection->modify(FrameSelection::AlterationExtend, (increase) ? DirectionRight : DirectionLeft, granularity, UserTriggered); |
| } |
| |
| - (void)accessibilityIncreaseSelection:(TextGranularity)granularity |
| { |
| [self accessibilityModifySelection:granularity increase:YES]; |
| } |
| |
| - (void)accessibilityDecreaseSelection:(TextGranularity)granularity |
| { |
| [self accessibilityModifySelection:granularity increase:NO]; |
| } |
| |
| - (void)accessibilityMoveSelectionToMarker:(WebAccessibilityTextMarker *)marker |
| { |
| if (![self _prepareAccessibilityCall]) |
| return; |
| |
| VisiblePosition visiblePosition = [marker visiblePosition]; |
| if (visiblePosition.isNull()) |
| return; |
| |
| FrameSelection* frameSelection = m_object->document()->frame()->selection(); |
| frameSelection->moveTo(visiblePosition, UserTriggered); |
| } |
| |
| - (void)accessibilityIncrement |
| { |
| if (![self _prepareAccessibilityCall]) |
| return; |
| |
| m_object->increment(); |
| } |
| |
| - (void)accessibilityDecrement |
| { |
| if (![self _prepareAccessibilityCall]) |
| return; |
| |
| m_object->decrement(); |
| } |
| |
| #pragma mark Accessibility Text Marker Handlers |
| |
| - (BOOL)_addAccessibilityObject:(AccessibilityObject*)axObject toTextMarkerArray:(NSMutableArray *)array |
| { |
| if (!axObject) |
| return NO; |
| |
| AccessibilityObjectWrapper* wrapper = axObject->wrapper(); |
| if (!wrapper) |
| return NO; |
| |
| // Don't add the same object twice, but since this has already been added, we should return |
| // YES because we want to inform that it's in the array |
| if ([array containsObject:wrapper]) |
| return YES; |
| |
| // Explicity set that this is now an element (in case other logic tries to override). |
| [wrapper setValue:[NSNumber numberWithBool:YES] forKey:@"isAccessibilityElement"]; |
| [array addObject:wrapper]; |
| return YES; |
| } |
| |
| - (NSString *)stringForTextMarkers:(NSArray *)markers |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| if ([markers count] != 2) |
| return nil; |
| |
| WebAccessibilityTextMarker* startMarker = [markers objectAtIndex:0]; |
| WebAccessibilityTextMarker* endMarker = [markers objectAtIndex:1]; |
| if (![startMarker isKindOfClass:[WebAccessibilityTextMarker class]] || ![endMarker isKindOfClass:[WebAccessibilityTextMarker class]]) |
| return nil; |
| |
| // extract the start and end VisiblePosition |
| VisiblePosition startVisiblePosition = [startMarker visiblePosition]; |
| if (startVisiblePosition.isNull()) |
| return nil; |
| |
| VisiblePosition endVisiblePosition = [endMarker visiblePosition]; |
| if (endVisiblePosition.isNull()) |
| return nil; |
| |
| VisiblePositionRange visiblePosRange = VisiblePositionRange(startVisiblePosition, endVisiblePosition); |
| return m_object->stringForVisiblePositionRange(visiblePosRange); |
| } |
| |
| static int blockquoteLevel(RenderObject* renderer) |
| { |
| if (!renderer) |
| return 0; |
| |
| int result = 0; |
| for (Node* node = renderer->node(); node; node = node->parentNode()) { |
| if (node->hasTagName(blockquoteTag)) |
| result += 1; |
| } |
| |
| return result; |
| } |
| |
| static void AXAttributeStringSetBlockquoteLevel(NSMutableAttributedString* attrString, RenderObject* renderer, NSRange range) |
| { |
| int quoteLevel = blockquoteLevel(renderer); |
| |
| if (quoteLevel) |
| [attrString addAttribute:UIAccessibilityTokenBlockquoteLevel value:[NSNumber numberWithInt:quoteLevel] range:range]; |
| else |
| [attrString removeAttribute:UIAccessibilityTokenBlockquoteLevel range:range]; |
| } |
| |
| static void AXAttributeStringSetHeadingLevel(NSMutableAttributedString* attrString, RenderObject* renderer, NSRange range) |
| { |
| if (!renderer) |
| return; |
| |
| AccessibilityObject* parentObject = renderer->document()->axObjectCache()->getOrCreate(renderer->parent()); |
| int parentHeadingLevel = parentObject->headingLevel(); |
| |
| if (parentHeadingLevel) |
| [attrString addAttribute:UIAccessibilityTokenHeadingLevel value:[NSNumber numberWithInt:parentHeadingLevel] range:range]; |
| else |
| [attrString removeAttribute:UIAccessibilityTokenHeadingLevel range:range]; |
| } |
| |
| static void AXAttributeStringSetFont(NSMutableAttributedString* attrString, GSFontRef font, NSRange range) |
| { |
| if (!font) |
| return; |
| |
| const char* nameCStr = GSFontGetFullName(font); |
| const char* familyCStr = GSFontGetFamilyName(font); |
| NSNumber* size = [NSNumber numberWithFloat:GSFontGetSize(font)]; |
| NSNumber* bold = [NSNumber numberWithBool:GSFontIsBold(font)]; |
| GSFontTraitMask traits = GSFontGetTraits(font); |
| if (nameCStr) |
| [attrString addAttribute:UIAccessibilityTokenFontName value:[NSString stringWithUTF8String:nameCStr] range:range]; |
| if (familyCStr) |
| [attrString addAttribute:UIAccessibilityTokenFontFamily value:[NSString stringWithUTF8String:familyCStr] range:range]; |
| if ([size boolValue]) |
| [attrString addAttribute:UIAccessibilityTokenFontSize value:size range:range]; |
| if ([bold boolValue] || (traits & GSBoldFontMask)) |
| [attrString addAttribute:UIAccessibilityTokenBold value:[NSNumber numberWithBool:YES] range:range]; |
| if (traits & GSItalicFontMask) |
| [attrString addAttribute:UIAccessibilityTokenItalic value:[NSNumber numberWithBool:YES] range:range]; |
| |
| } |
| |
| static void AXAttributeStringSetNumber(NSMutableAttributedString* attrString, NSString* attribute, NSNumber* number, NSRange range) |
| { |
| if (number) |
| [attrString addAttribute:attribute value:number range:range]; |
| else |
| [attrString removeAttribute:attribute range:range]; |
| } |
| |
| static void AXAttributeStringSetStyle(NSMutableAttributedString* attrString, RenderObject* renderer, NSRange range) |
| { |
| RenderStyle* style = renderer->style(); |
| |
| // set basic font info |
| AXAttributeStringSetFont(attrString, style->font().primaryFont()->getGSFont(), range); |
| |
| int decor = style->textDecorationsInEffect(); |
| if ((decor & (UNDERLINE | LINE_THROUGH)) != 0) { |
| // find colors using quirk mode approach (strict mode would use current |
| // color for all but the root line box, which would use getTextDecorationColors) |
| Color underline, overline, linethrough; |
| renderer->getTextDecorationColors(decor, underline, overline, linethrough); |
| |
| if (decor & UNDERLINE) |
| AXAttributeStringSetNumber(attrString, UIAccessibilityTokenUnderline, [NSNumber numberWithBool:YES], range); |
| } |
| } |
| |
| static void AXAttributedStringAppendText(NSMutableAttributedString* attrString, Node* node, const UChar* chars, int length) |
| { |
| // skip invisible text |
| if (!node->renderer()) |
| return; |
| |
| // easier to calculate the range before appending the string |
| NSRange attrStringRange = NSMakeRange([attrString length], length); |
| |
| // append the string from this node |
| [[attrString mutableString] appendString:[NSString stringWithCharacters:chars length:length]]; |
| |
| // set new attributes |
| AXAttributeStringSetStyle(attrString, node->renderer(), attrStringRange); |
| AXAttributeStringSetHeadingLevel(attrString, node->renderer(), attrStringRange); |
| AXAttributeStringSetBlockquoteLevel(attrString, node->renderer(), attrStringRange); |
| } |
| |
| |
| // This method is intended to return an array of strings and accessibility elements that |
| // represent the objects on one line of rendered web content. The array of markers sent |
| // in should be ordered and contain only a start and end marker. |
| - (NSArray *)arrayOfTextForTextMarkers:(NSArray *)markers attributed:(BOOL)attributed |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| if ([markers count] != 2) |
| return nil; |
| |
| WebAccessibilityTextMarker* startMarker = [markers objectAtIndex:0]; |
| WebAccessibilityTextMarker* endMarker = [markers objectAtIndex:1]; |
| if (![startMarker isKindOfClass:[WebAccessibilityTextMarker class]] || ![endMarker isKindOfClass:[WebAccessibilityTextMarker class]]) |
| return nil; |
| |
| // extract the start and end VisiblePosition |
| VisiblePosition startVisiblePosition = [startMarker visiblePosition]; |
| if (startVisiblePosition.isNull()) |
| return nil; |
| |
| VisiblePosition endVisiblePosition = [endMarker visiblePosition]; |
| if (endVisiblePosition.isNull()) |
| return nil; |
| |
| // iterate over the range to build the AX attributed string |
| NSMutableArray* array = [[NSMutableArray alloc] init]; |
| TextIterator it(makeRange(startVisiblePosition, endVisiblePosition).get()); |
| for (; !it.atEnd(); it.advance()) { |
| // locate the node and starting offset for this range |
| int exception = 0; |
| Node* node = it.range()->startContainer(exception); |
| ASSERT(node == it.range()->endContainer(exception)); |
| int offset = it.range()->startOffset(exception); |
| |
| // non-zero length means textual node, zero length means replaced node (AKA "attachments" in AX) |
| if (it.length() != 0) { |
| if (!attributed) { |
| // First check if this is represented by a link. |
| AccessibilityObject* linkObject = AccessibilityObject::anchorElementForNode(node); |
| if ([self _addAccessibilityObject:linkObject toTextMarkerArray:array]) |
| continue; |
| |
| // Next check if this region is represented by a heading. |
| AccessibilityObject* headingObject = AccessibilityObject::headingElementForNode(node); |
| if ([self _addAccessibilityObject:headingObject toTextMarkerArray:array]) |
| continue; |
| |
| String listMarkerText = m_object->listMarkerTextForNodeAndPosition(node, VisiblePosition(it.range()->startPosition())); |
| |
| if (!listMarkerText.isEmpty()) |
| [array addObject:[NSString stringWithCharacters:listMarkerText.characters() length:listMarkerText.length()]]; |
| // There was not an element representation, so just return the text. |
| [array addObject:[NSString stringWithCharacters:it.characters() length:it.length()]]; |
| } |
| else |
| { |
| String listMarkerText = m_object->listMarkerTextForNodeAndPosition(node, VisiblePosition(it.range()->startPosition())); |
| |
| if (!listMarkerText.isEmpty()) { |
| NSMutableAttributedString* attrString = [[NSMutableAttributedString alloc] init]; |
| AXAttributedStringAppendText(attrString, node, listMarkerText.characters(), listMarkerText.length()); |
| [array addObject:attrString]; |
| [attrString release]; |
| } |
| |
| NSMutableAttributedString *attrString = [[NSMutableAttributedString alloc] init]; |
| AXAttributedStringAppendText(attrString, node, it.characters(), it.length()); |
| [array addObject:attrString]; |
| [attrString release]; |
| } |
| } else { |
| Node* replacedNode = node->childNode(offset); |
| if (replacedNode) { |
| AccessibilityObject* obj = m_object->axObjectCache()->getOrCreate(replacedNode->renderer()); |
| if (obj && !obj->accessibilityIsIgnored()) |
| [self _addAccessibilityObject:obj toTextMarkerArray:array]; |
| } |
| } |
| } |
| |
| return [array autorelease]; |
| } |
| |
| - (NSRange)_convertToNSRange:(Range *)range |
| { |
| if (!range || !range->startContainer()) |
| return NSMakeRange(NSNotFound, 0); |
| |
| Document* document = m_object->document(); |
| FrameSelection* frameSelection = document->frame()->selection(); |
| |
| Element* selectionRoot = frameSelection->rootEditableElement(); |
| Element* scope = selectionRoot ? selectionRoot : document->documentElement(); |
| |
| // Mouse events may cause TSM to attempt to create an NSRange for a portion of the view |
| // that is not inside the current editable region. These checks ensure we don't produce |
| // potentially invalid data when responding to such requests. |
| if (range->startContainer() != scope && !range->startContainer()->isDescendantOf(scope)) |
| return NSMakeRange(NSNotFound, 0); |
| if (range->endContainer() != scope && !range->endContainer()->isDescendantOf(scope)) |
| return NSMakeRange(NSNotFound, 0); |
| |
| RefPtr<Range> testRange = Range::create(scope->document(), scope, 0, range->startContainer(), range->startOffset()); |
| ASSERT(testRange->startContainer() == scope); |
| int startPosition = TextIterator::rangeLength(testRange.get()); |
| |
| ExceptionCode ec; |
| testRange->setEnd(range->endContainer(), range->endOffset(), ec); |
| ASSERT(testRange->startContainer() == scope); |
| int endPosition = TextIterator::rangeLength(testRange.get()); |
| return NSMakeRange(startPosition, endPosition - startPosition); |
| } |
| |
| - (PassRefPtr<Range>)_convertToDOMRange:(NSRange)nsrange |
| { |
| if (nsrange.location > INT_MAX) |
| return 0; |
| if (nsrange.length > INT_MAX || nsrange.location + nsrange.length > INT_MAX) |
| nsrange.length = INT_MAX - nsrange.location; |
| |
| // our critical assumption is that we are only called by input methods that |
| // concentrate on a given area containing the selection |
| // We have to do this because of text fields and textareas. The DOM for those is not |
| // directly in the document DOM, so serialization is problematic. Our solution is |
| // to use the root editable element of the selection start as the positional base. |
| // That fits with AppKit's idea of an input context. |
| Document* document = m_object->document(); |
| FrameSelection* frameSelection = document->frame()->selection(); |
| Element* selectionRoot = frameSelection->rootEditableElement(); |
| Element* scope = selectionRoot ? selectionRoot : document->documentElement(); |
| return TextIterator::rangeFromLocationAndLength(scope, nsrange.location, nsrange.length); |
| } |
| |
| // This method is intended to take a text marker representing a VisiblePosition and convert it |
| // into a normalized location within the document. |
| - (NSInteger)positionForTextMarker:(WebAccessibilityTextMarker *)marker |
| { |
| if (![self _prepareAccessibilityCall]) |
| return NSNotFound; |
| |
| if (!marker) |
| return NSNotFound; |
| |
| VisibleSelection selection([marker visiblePosition]); |
| RefPtr<Range> range = selection.toNormalizedRange(); |
| NSRange nsRange = [self _convertToNSRange:range.get()]; |
| return nsRange.location; |
| } |
| |
| - (NSArray *)textMarkerRange |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| VisiblePositionRange range = m_object->visiblePositionRange(); |
| VisiblePosition startPosition = range.start; |
| VisiblePosition endPosition = range.end; |
| WebAccessibilityTextMarker* start = [WebAccessibilityTextMarker textMarkerWithVisiblePosition:startPosition cache:m_object->axObjectCache()]; |
| WebAccessibilityTextMarker* end = [WebAccessibilityTextMarker textMarkerWithVisiblePosition:endPosition cache:m_object->axObjectCache()]; |
| |
| return [NSArray arrayWithObjects:start, end, nil]; |
| } |
| |
| // A method to get the normalized text cursor range of an element. Used in DumpRenderTree. |
| - (NSRange)elementTextRange |
| { |
| if (![self _prepareAccessibilityCall]) |
| return NSMakeRange(NSNotFound, 0); |
| |
| NSArray *markers = [self textMarkerRange]; |
| if ([markers count] != 2) |
| return NSMakeRange(NSNotFound, 0); |
| |
| WebAccessibilityTextMarker *startMarker = [markers objectAtIndex:0]; |
| WebAccessibilityTextMarker *endMarker = [markers objectAtIndex:1]; |
| |
| NSInteger startPosition = [self positionForTextMarker:startMarker]; |
| NSInteger endPosition = [self positionForTextMarker:endMarker]; |
| |
| return NSMakeRange(startPosition, endPosition - startPosition); |
| } |
| |
| - (AccessibilityObjectWrapper *)accessibilityObjectForTextMarker:(WebAccessibilityTextMarker *)marker |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| if (!marker) |
| return nil; |
| |
| VisiblePosition visiblePosition = [marker visiblePosition]; |
| AccessibilityObject* obj = m_object->accessibilityObjectForPosition(visiblePosition); |
| if (!obj) |
| return nil; |
| |
| return AccessibilityUnignoredAncestor(obj->wrapper()); |
| } |
| |
| - (NSArray *)textMarkerRangeForSelection |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| VisibleSelection selection = m_object->selection(); |
| if (selection.isNone()) |
| return nil; |
| VisiblePosition startPosition = selection.visibleStart(); |
| VisiblePosition endPosition = selection.visibleEnd(); |
| |
| WebAccessibilityTextMarker* startMarker = [WebAccessibilityTextMarker textMarkerWithVisiblePosition:startPosition cache:m_object->axObjectCache()]; |
| WebAccessibilityTextMarker* endMarker = [WebAccessibilityTextMarker textMarkerWithVisiblePosition:endPosition cache:m_object->axObjectCache()]; |
| if (!startMarker || !endMarker) |
| return nil; |
| |
| return [NSArray arrayWithObjects:startMarker, endMarker, nil]; |
| } |
| |
| - (WebAccessibilityTextMarker *)textMarkerForPosition:(NSInteger)position |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| PassRefPtr<Range> range = [self _convertToDOMRange:NSMakeRange(position, 0)]; |
| if (!range) |
| return nil; |
| |
| VisibleSelection selection = VisibleSelection(range.get(), DOWNSTREAM); |
| |
| VisiblePosition visiblePosition = selection.visibleStart(); |
| return [WebAccessibilityTextMarker textMarkerWithVisiblePosition:visiblePosition cache:m_object->axObjectCache()]; |
| } |
| |
| - (id)_stringForRange:(NSRange)range attributed:(BOOL)attributed |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| WebAccessibilityTextMarker* startMarker = [self textMarkerForPosition:range.location]; |
| WebAccessibilityTextMarker* endMarker = [self textMarkerForPosition:NSMaxRange(range)]; |
| |
| // Clients don't always know the exact range, rather than force them to compute it, |
| // allow clients to overshoot and use the max text marker range. |
| if (!startMarker || !endMarker) { |
| NSArray *markers = [self textMarkerRange]; |
| if ([markers count] != 2) |
| return nil; |
| if (!startMarker) |
| startMarker = [markers objectAtIndex:0]; |
| if (!endMarker) |
| endMarker = [markers objectAtIndex:1]; |
| } |
| |
| NSArray* array = [self arrayOfTextForTextMarkers:[NSArray arrayWithObjects:startMarker, endMarker, nil] attributed:attributed]; |
| Class returnClass = attributed ? [NSMutableAttributedString class] : [NSMutableString class]; |
| id returnValue = [[[returnClass alloc] init] autorelease]; |
| |
| NSInteger count = [array count]; |
| for (NSInteger k = 0; k < count; ++k) { |
| id object = [array objectAtIndex:k]; |
| |
| if (![object isKindOfClass:returnClass]) |
| continue; |
| |
| if (attributed) |
| [(NSMutableAttributedString *)returnValue appendAttributedString:object]; |
| else |
| [(NSMutableString *)returnValue appendString:object]; |
| } |
| return returnValue; |
| } |
| |
| |
| // A convenience method for getting the text of a NSRange. Currently used only by DRT. |
| - (NSString *)stringForRange:(NSRange)range |
| { |
| return [self _stringForRange:range attributed:NO]; |
| } |
| |
| - (NSAttributedString *)attributedStringForRange:(NSRange)range |
| { |
| return [self _stringForRange:range attributed:YES]; |
| } |
| |
| // A convenience method for getting the accessibility objects of a NSRange. Currently used only by DRT. |
| - (NSArray *)elementsForRange:(NSRange)range |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| WebAccessibilityTextMarker* startMarker = [self textMarkerForPosition:range.location]; |
| WebAccessibilityTextMarker* endMarker = [self textMarkerForPosition:NSMaxRange(range)]; |
| if (!startMarker || !endMarker) |
| return nil; |
| |
| NSArray* array = [self arrayOfTextForTextMarkers:[NSArray arrayWithObjects:startMarker, endMarker, nil] attributed:NO]; |
| NSMutableArray* elements = [NSMutableArray array]; |
| for (id element in array) { |
| if (![element isKindOfClass:[AccessibilityObjectWrapper class]]) |
| continue; |
| [elements addObject:element]; |
| } |
| return elements; |
| } |
| |
| - (NSString *)selectionRangeString |
| { |
| NSArray *markers = [self textMarkerRangeForSelection]; |
| return [self stringForTextMarkers:markers]; |
| } |
| |
| - (WebAccessibilityTextMarker *)selectedTextMarker |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| VisibleSelection selection = m_object->selection(); |
| VisiblePosition position = selection.visibleStart(); |
| |
| // if there's no selection, start at the top of the document |
| if (position.isNull()) |
| position = startOfDocument(m_object->document()); |
| |
| return [WebAccessibilityTextMarker textMarkerWithVisiblePosition:position cache:m_object->axObjectCache()]; |
| } |
| |
| // This method is intended to return the marker at the end of the line starting at |
| // the marker that is passed into the method. |
| - (WebAccessibilityTextMarker *)lineEndMarkerForMarker:(WebAccessibilityTextMarker *)marker |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| if (!marker) |
| return nil; |
| |
| VisiblePosition start = [marker visiblePosition]; |
| VisiblePosition lineEnd = m_object->nextLineEndPosition(start); |
| |
| return [WebAccessibilityTextMarker textMarkerWithVisiblePosition:lineEnd cache:m_object->axObjectCache()]; |
| } |
| |
| // This method is intended to return the marker at the start of the line starting at |
| // the marker that is passed into the method. |
| - (WebAccessibilityTextMarker *)lineStartMarkerForMarker:(WebAccessibilityTextMarker *)marker |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| if (!marker) |
| return nil; |
| |
| VisiblePosition start = [marker visiblePosition]; |
| VisiblePosition lineStart = m_object->previousLineStartPosition(start); |
| |
| return [WebAccessibilityTextMarker textMarkerWithVisiblePosition:lineStart cache:m_object->axObjectCache()]; |
| } |
| |
| - (WebAccessibilityTextMarker *)nextMarkerForMarker:(WebAccessibilityTextMarker *)marker |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| if (!marker) |
| return nil; |
| |
| VisiblePosition start = [marker visiblePosition]; |
| VisiblePosition nextMarker = m_object->nextVisiblePosition(start); |
| |
| return [WebAccessibilityTextMarker textMarkerWithVisiblePosition:nextMarker cache:m_object->axObjectCache()]; |
| } |
| |
| // This method is intended to return the marker at the start of the line starting at |
| // the marker that is passed into the method. |
| - (WebAccessibilityTextMarker *)previousMarkerForMarker:(WebAccessibilityTextMarker *)marker |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| if (!marker) |
| return nil; |
| |
| VisiblePosition start = [marker visiblePosition]; |
| VisiblePosition previousMarker = m_object->previousVisiblePosition(start); |
| |
| return [WebAccessibilityTextMarker textMarkerWithVisiblePosition:previousMarker cache:m_object->axObjectCache()]; |
| } |
| |
| // This method is intended to return the bounds of a text marker range in screen coordinates. |
| - (CGRect)frameForTextMarkers:(NSArray *)array |
| { |
| if (![self _prepareAccessibilityCall]) |
| return CGRectZero; |
| |
| if ([array count] != 2) |
| return CGRectZero; |
| |
| WebAccessibilityTextMarker* startMarker = [array objectAtIndex:0]; |
| WebAccessibilityTextMarker* endMarker = [array objectAtIndex:1]; |
| if (![startMarker isKindOfClass:[WebAccessibilityTextMarker class]] || ![endMarker isKindOfClass:[WebAccessibilityTextMarker class]]) |
| return CGRectZero; |
| |
| IntRect rect = m_object->boundsForVisiblePositionRange(VisiblePositionRange([startMarker visiblePosition], [endMarker visiblePosition])); |
| return [self convertRectToScreenSpace:rect]; |
| } |
| |
| - (WebAccessibilityTextMarker *)textMarkerForPoint:(CGPoint)point |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| VisiblePosition pos = m_object->visiblePositionForPoint(IntPoint(point)); |
| return [WebAccessibilityTextMarker textMarkerWithVisiblePosition:pos cache:m_object->axObjectCache()]; |
| } |
| |
| - (NSString *)accessibilityIdentifier |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| return m_object->getAttribute(HTMLNames::idAttr); |
| } |
| |
| - (NSString *)accessibilitySpeechHint |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| switch (m_object->speakProperty()) { |
| default: |
| case SpeakNormal: |
| return @"normal"; |
| case SpeakNone: |
| return @"none"; |
| case SpeakSpellOut: |
| return @"spell-out"; |
| case SpeakDigits: |
| return @"digits"; |
| case SpeakLiteralPunctuation: |
| return @"literal-punctuation"; |
| case SpeakNoPunctuation: |
| return @"no-punctuation"; |
| } |
| |
| return nil; |
| } |
| |
| - (BOOL)accessibilityARIAIsBusy |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| return m_object->ariaLiveRegionBusy(); |
| } |
| |
| - (NSString *)accessibilityARIALiveRegionStatus |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| return m_object->ariaLiveRegionStatus(); |
| } |
| |
| - (NSString *)accessibilityARIARelevantStatus |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| return m_object->ariaLiveRegionRelevant(); |
| } |
| |
| - (BOOL)accessibilityARIALiveRegionIsAtomic |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| return m_object->ariaLiveRegionAtomic(); |
| } |
| |
| - (NSString *)accessibilityInvalidStatus |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| return m_object->invalidStatus(); |
| } |
| |
| - (WebAccessibilityObjectWrapper *)accessibilityMathRootIndexObject |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| return m_object->mathRootIndexObject() ? m_object->mathRootIndexObject()->wrapper() : 0; |
| } |
| |
| - (WebAccessibilityObjectWrapper *)accessibilityMathRadicandObject |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| return m_object->mathRadicandObject() ? m_object->mathRadicandObject()->wrapper() : 0; |
| } |
| |
| - (WebAccessibilityObjectWrapper *)accessibilityMathNumeratorObject |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| return m_object->mathNumeratorObject() ? m_object->mathNumeratorObject()->wrapper() : 0; |
| } |
| |
| - (WebAccessibilityObjectWrapper *)accessibilityMathDenominatorObject |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| return m_object->mathDenominatorObject() ? m_object->mathDenominatorObject()->wrapper() : 0; |
| } |
| |
| - (WebAccessibilityObjectWrapper *)accessibilityMathBaseObject |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| return m_object->mathBaseObject() ? m_object->mathBaseObject()->wrapper() : 0; |
| } |
| |
| - (WebAccessibilityObjectWrapper *)accessibilityMathSubscriptObject |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| return m_object->mathSubscriptObject() ? m_object->mathSubscriptObject()->wrapper() : 0; |
| } |
| |
| - (WebAccessibilityObjectWrapper *)accessibilityMathSuperscriptObject |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| return m_object->mathSuperscriptObject() ? m_object->mathSuperscriptObject()->wrapper() : 0; |
| } |
| |
| - (WebAccessibilityObjectWrapper *)accessibilityMathUnderObject |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| return m_object->mathUnderObject() ? m_object->mathUnderObject()->wrapper() : 0; |
| } |
| |
| - (WebAccessibilityObjectWrapper *)accessibilityMathOverObject |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| return m_object->mathOverObject() ? m_object->mathOverObject()->wrapper() : 0; |
| } |
| |
| - (NSString *)accessibilityMathFencedOpenString |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| return m_object->mathFencedOpenString(); |
| } |
| |
| - (NSString *)accessibilityMathFencedCloseString |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| return m_object->mathFencedCloseString(); |
| } |
| |
| - (BOOL)accessibilityIsMathTopObject |
| { |
| if (![self _prepareAccessibilityCall]) |
| return NO; |
| |
| return m_object->roleValue() == DocumentMathRole; |
| } |
| |
| - (NSInteger)accessibilityMathLineThickness |
| { |
| if (![self _prepareAccessibilityCall]) |
| return 0; |
| |
| return m_object->mathLineThickness(); |
| } |
| |
| - (NSString *)accessibilityMathType |
| { |
| if (![self _prepareAccessibilityCall]) |
| return nil; |
| |
| if (m_object->roleValue() == MathElementRole) { |
| if (m_object->isMathFraction()) |
| return @"AXMathFraction"; |
| if (m_object->isMathFenced()) |
| return @"AXMathFenced"; |
| if (m_object->isMathSubscriptSuperscript()) |
| return @"AXMathSubscriptSuperscript"; |
| if (m_object->isMathRow()) |
| return @"AXMathRow"; |
| if (m_object->isMathUnderOver()) |
| return @"AXMathUnderOver"; |
| if (m_object->isMathSquareRoot()) |
| return @"AXMathSquareRoot"; |
| if (m_object->isMathRoot()) |
| return @"AXMathRoot"; |
| if (m_object->isMathText()) |
| return @"AXMathText"; |
| if (m_object->isMathNumber()) |
| return @"AXMathNumber"; |
| if (m_object->isMathIdentifier()) |
| return @"AXMathIdentifier"; |
| if (m_object->isMathTable()) |
| return @"AXMathTable"; |
| if (m_object->isMathTableRow()) |
| return @"AXMathTableRow"; |
| if (m_object->isMathTableCell()) |
| return @"AXMathTableCell"; |
| if (m_object->isMathFenceOperator()) |
| return @"AXMathFenceOperator"; |
| if (m_object->isMathSeparatorOperator()) |
| return @"AXMathSeparatorOperator"; |
| if (m_object->isMathOperator()) |
| return @"AXMathOperator"; |
| } |
| |
| return nil; |
| } |
| |
| - (CGPoint)accessibilityClickPoint |
| { |
| return m_object->clickPoint(); |
| } |
| |
| // These are used by DRT so that it can know when notifications are sent. |
| // Since they are static, only one callback can be installed at a time (that's all DRT should need). |
| typedef void (*AXPostedNotificationCallback)(id element, NSString* notification, void* context); |
| static AXPostedNotificationCallback AXNotificationCallback = 0; |
| static void* AXPostedNotificationContext = 0; |
| |
| - (void)accessibilitySetPostedNotificationCallback:(AXPostedNotificationCallback)function withContext:(void*)context |
| { |
| AXNotificationCallback = function; |
| AXPostedNotificationContext = context; |
| } |
| |
| - (void)accessibilityPostedNotification:(NSString *)notificationName |
| { |
| if (AXNotificationCallback && notificationName) |
| AXNotificationCallback(self, notificationName, AXPostedNotificationContext); |
| } |
| |
| #ifndef NDEBUG |
| - (NSString *)description |
| { |
| CGRect frame = [self accessibilityFrame]; |
| return [NSString stringWithFormat:@"Role: (%d) - Text: %@: Value: %@ -- Frame: %f %f %f %f", m_object ? m_object->roleValue() : 0, [self accessibilityLabel], [self accessibilityValue], frame.origin.x, frame.origin.y, frame.size.width, frame.size.height]; |
| } |
| #endif |
| |
| @end |
| |
| #endif // HAVE(ACCESSIBILITY) && PLATFORM(IOS) |
