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-rw-r--r--accessible/mac/mozTextAccessible.mm423
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+/* clang-format off */
+/* -*- Mode: Objective-C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* clang-format on */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "AccAttributes.h"
+#include "HyperTextAccessible-inl.h"
+#include "LocalAccessible-inl.h"
+#include "mozilla/a11y/PDocAccessible.h"
+#include "nsCocoaUtils.h"
+#include "nsObjCExceptions.h"
+#include "TextLeafAccessible.h"
+
+#import "mozTextAccessible.h"
+#import "GeckoTextMarker.h"
+#import "MOXTextMarkerDelegate.h"
+
+using namespace mozilla;
+using namespace mozilla::a11y;
+
+inline bool ToNSRange(id aValue, NSRange* aRange) {
+ MOZ_ASSERT(aRange, "aRange is nil");
+
+ if ([aValue isKindOfClass:[NSValue class]] &&
+ strcmp([(NSValue*)aValue objCType], @encode(NSRange)) == 0) {
+ *aRange = [aValue rangeValue];
+ return true;
+ }
+
+ return false;
+}
+
+inline NSString* ToNSString(id aValue) {
+ if ([aValue isKindOfClass:[NSString class]]) {
+ return aValue;
+ }
+
+ return nil;
+}
+
+@interface mozTextAccessible ()
+- (long)textLength;
+- (BOOL)isReadOnly;
+- (NSString*)text;
+- (GeckoTextMarkerRange)selection;
+- (GeckoTextMarkerRange)textMarkerRangeFromRange:(NSValue*)range;
+@end
+
+@implementation mozTextAccessible
+
+- (NSString*)moxTitle {
+ return @"";
+}
+
+- (id)moxValue {
+ // Apple's SpeechSynthesisServer expects AXValue to return an AXStaticText
+ // object's AXSelectedText attribute. See bug 674612 for details.
+ // Also if there is no selected text, we return the full text.
+ // See bug 369710 for details.
+ if ([[self moxRole] isEqualToString:NSAccessibilityStaticTextRole]) {
+ NSString* selectedText = [self moxSelectedText];
+ return (selectedText && [selectedText length]) ? selectedText : [self text];
+ }
+
+ return [self text];
+}
+
+- (id)moxRequired {
+ return @([self stateWithMask:states::REQUIRED] != 0);
+}
+
+- (NSString*)moxInvalid {
+ if ([self stateWithMask:states::INVALID] != 0) {
+ // If the attribute exists, it has one of four values: true, false,
+ // grammar, or spelling. We query the attribute value here in order
+ // to find the correct string to return.
+ RefPtr<AccAttributes> attributes;
+ HyperTextAccessibleBase* text = mGeckoAccessible->AsHyperTextBase();
+ if (text && mGeckoAccessible->IsTextRole()) {
+ attributes = text->DefaultTextAttributes();
+ }
+
+ nsAutoString invalidStr;
+ if (!attributes ||
+ !attributes->GetAttribute(nsGkAtoms::invalid, invalidStr)) {
+ return @"true";
+ }
+ return nsCocoaUtils::ToNSString(invalidStr);
+ }
+
+ // If the flag is not set, we return false.
+ return @"false";
+}
+
+- (NSNumber*)moxInsertionPointLineNumber {
+ MOZ_ASSERT(mGeckoAccessible);
+
+ int32_t lineNumber = -1;
+ if (HyperTextAccessibleBase* textAcc = mGeckoAccessible->AsHyperTextBase()) {
+ lineNumber = textAcc->CaretLineNumber() - 1;
+ }
+
+ return (lineNumber >= 0) ? [NSNumber numberWithInt:lineNumber] : nil;
+}
+
+- (NSString*)moxRole {
+ if ([self stateWithMask:states::MULTI_LINE]) {
+ return NSAccessibilityTextAreaRole;
+ }
+
+ return [super moxRole];
+}
+
+- (NSString*)moxSubrole {
+ MOZ_ASSERT(mGeckoAccessible);
+
+ if (mRole == roles::PASSWORD_TEXT) {
+ return NSAccessibilitySecureTextFieldSubrole;
+ }
+
+ if (mRole == roles::ENTRY && mGeckoAccessible->IsSearchbox()) {
+ return @"AXSearchField";
+ }
+
+ return nil;
+}
+
+- (NSNumber*)moxNumberOfCharacters {
+ return @([self textLength]);
+}
+
+- (NSString*)moxSelectedText {
+ GeckoTextMarkerRange selection = [self selection];
+ if (!selection.IsValid()) {
+ return nil;
+ }
+
+ return selection.Text();
+}
+
+- (NSValue*)moxSelectedTextRange {
+ GeckoTextMarkerRange selection = [self selection];
+ if (!selection.IsValid()) {
+ return nil;
+ }
+
+ GeckoTextMarkerRange fromStartToSelection(
+ GeckoTextMarker(mGeckoAccessible, 0), selection.Start());
+
+ return [NSValue valueWithRange:NSMakeRange(fromStartToSelection.Length(),
+ selection.Length())];
+}
+
+- (NSValue*)moxVisibleCharacterRange {
+ // XXX this won't work with Textarea and such as we actually don't give
+ // the visible character range.
+ return [NSValue valueWithRange:NSMakeRange(0, [self textLength])];
+}
+
+- (BOOL)moxBlockSelector:(SEL)selector {
+ if (selector == @selector(moxSetValue:) && [self isReadOnly]) {
+ return YES;
+ }
+
+ return [super moxBlockSelector:selector];
+}
+
+- (void)moxSetValue:(id)value {
+ MOZ_ASSERT(mGeckoAccessible);
+
+ nsString text;
+ nsCocoaUtils::GetStringForNSString(value, text);
+ if (HyperTextAccessibleBase* textAcc = mGeckoAccessible->AsHyperTextBase()) {
+ textAcc->ReplaceText(text);
+ }
+}
+
+- (void)moxSetSelectedText:(NSString*)selectedText {
+ MOZ_ASSERT(mGeckoAccessible);
+
+ NSString* stringValue = ToNSString(selectedText);
+ if (!stringValue) {
+ return;
+ }
+
+ HyperTextAccessibleBase* textAcc = mGeckoAccessible->AsHyperTextBase();
+ if (!textAcc) {
+ return;
+ }
+ int32_t start = 0, end = 0;
+ textAcc->SelectionBoundsAt(0, &start, &end);
+ nsString text;
+ nsCocoaUtils::GetStringForNSString(stringValue, text);
+ textAcc->SelectionBoundsAt(0, &start, &end);
+ textAcc->DeleteText(start, end - start);
+ textAcc->InsertText(text, start);
+}
+
+- (void)moxSetSelectedTextRange:(NSValue*)selectedTextRange {
+ GeckoTextMarkerRange markerRange =
+ [self textMarkerRangeFromRange:selectedTextRange];
+
+ if (markerRange.IsValid()) {
+ markerRange.Select();
+ }
+}
+
+- (void)moxSetVisibleCharacterRange:(NSValue*)visibleCharacterRange {
+ MOZ_ASSERT(mGeckoAccessible);
+
+ NSRange range;
+ if (!ToNSRange(visibleCharacterRange, &range)) {
+ return;
+ }
+
+ if (HyperTextAccessibleBase* textAcc = mGeckoAccessible->AsHyperTextBase()) {
+ textAcc->ScrollSubstringTo(range.location, range.location + range.length,
+ nsIAccessibleScrollType::SCROLL_TYPE_TOP_EDGE);
+ }
+}
+
+- (NSString*)moxStringForRange:(NSValue*)range {
+ GeckoTextMarkerRange markerRange = [self textMarkerRangeFromRange:range];
+
+ if (!markerRange.IsValid()) {
+ return nil;
+ }
+
+ return markerRange.Text();
+}
+
+- (NSAttributedString*)moxAttributedStringForRange:(NSValue*)range {
+ GeckoTextMarkerRange markerRange = [self textMarkerRangeFromRange:range];
+
+ if (!markerRange.IsValid()) {
+ return nil;
+ }
+
+ return markerRange.AttributedText();
+}
+
+- (NSValue*)moxRangeForLine:(NSNumber*)line {
+ // XXX: actually get the integer value for the line #
+ return [NSValue valueWithRange:NSMakeRange(0, [self textLength])];
+}
+
+- (NSNumber*)moxLineForIndex:(NSNumber*)index {
+ // XXX: actually return the line #
+ return @0;
+}
+
+- (NSValue*)moxBoundsForRange:(NSValue*)range {
+ GeckoTextMarkerRange markerRange = [self textMarkerRangeFromRange:range];
+
+ if (!markerRange.IsValid()) {
+ return nil;
+ }
+
+ return markerRange.Bounds();
+}
+
+#pragma mark - mozAccessible
+
+- (void)handleAccessibleTextChangeEvent:(NSString*)change
+ inserted:(BOOL)isInserted
+ inContainer:(Accessible*)container
+ at:(int32_t)start {
+ GeckoTextMarker startMarker(container, start);
+ NSDictionary* userInfo = @{
+ @"AXTextChangeElement" : self,
+ @"AXTextStateChangeType" : @(AXTextStateChangeTypeEdit),
+ @"AXTextChangeValues" : @[ @{
+ @"AXTextChangeValue" : (change ? change : @""),
+ @"AXTextChangeValueStartMarker" :
+ (__bridge id)startMarker.CreateAXTextMarker(),
+ @"AXTextEditType" : isInserted ? @(AXTextEditTypeTyping)
+ : @(AXTextEditTypeDelete)
+ } ]
+ };
+
+ mozAccessible* webArea = [self topWebArea];
+ [webArea moxPostNotification:NSAccessibilityValueChangedNotification
+ withUserInfo:userInfo];
+ [self moxPostNotification:NSAccessibilityValueChangedNotification
+ withUserInfo:userInfo];
+
+ [self moxPostNotification:NSAccessibilityValueChangedNotification];
+}
+
+- (void)handleAccessibleEvent:(uint32_t)eventType {
+ switch (eventType) {
+ default:
+ [super handleAccessibleEvent:eventType];
+ break;
+ }
+}
+
+#pragma mark -
+
+- (long)textLength {
+ return [[self text] length];
+}
+
+- (BOOL)isReadOnly {
+ return [self stateWithMask:states::EDITABLE] == 0;
+}
+
+- (NSString*)text {
+ // A password text field returns an empty value
+ if (mRole == roles::PASSWORD_TEXT) {
+ return @"";
+ }
+
+ id<MOXTextMarkerSupport> delegate = [self moxTextMarkerDelegate];
+ return [delegate
+ moxStringForTextMarkerRange:[delegate
+ moxTextMarkerRangeForUIElement:self]];
+}
+
+- (GeckoTextMarkerRange)selection {
+ MOZ_ASSERT(mGeckoAccessible);
+
+ id<MOXTextMarkerSupport> delegate = [self moxTextMarkerDelegate];
+ GeckoTextMarkerRange selection =
+ [static_cast<MOXTextMarkerDelegate*>(delegate) selection];
+
+ if (!selection.IsValid() || !selection.Crop(mGeckoAccessible)) {
+ // The selection is not in this accessible. Return invalid range.
+ return GeckoTextMarkerRange();
+ }
+
+ return selection;
+}
+
+- (GeckoTextMarkerRange)textMarkerRangeFromRange:(NSValue*)range {
+ NSRange r = [range rangeValue];
+
+ GeckoTextMarker startMarker =
+ GeckoTextMarker::MarkerFromIndex(mGeckoAccessible, r.location);
+
+ GeckoTextMarker endMarker =
+ GeckoTextMarker::MarkerFromIndex(mGeckoAccessible, r.location + r.length);
+
+ return GeckoTextMarkerRange(startMarker, endMarker);
+}
+
+@end
+
+@implementation mozTextLeafAccessible
+
+- (BOOL)moxBlockSelector:(SEL)selector {
+ if (selector == @selector(moxChildren) || selector == @selector
+ (moxTitleUIElement)) {
+ return YES;
+ }
+
+ return [super moxBlockSelector:selector];
+}
+
+- (NSString*)moxValue {
+ NSString* val = [super moxTitle];
+ return [val length] ? val : nil;
+}
+
+- (NSString*)moxTitle {
+ return nil;
+}
+
+- (NSString*)moxLabel {
+ return nil;
+}
+
+- (BOOL)moxIgnoreWithParent:(mozAccessible*)parent {
+ // Don't render text nodes that are completely empty
+ // or those that should be ignored based on our
+ // standard ignore rules
+ return [self moxValue] == nil || [super moxIgnoreWithParent:parent];
+}
+
+static GeckoTextMarkerRange TextMarkerSubrange(Accessible* aAccessible,
+ NSValue* aRange) {
+ GeckoTextMarkerRange textMarkerRange(aAccessible);
+ GeckoTextMarker start = textMarkerRange.Start();
+ GeckoTextMarker end = textMarkerRange.End();
+
+ NSRange r = [aRange rangeValue];
+ start.Offset() += r.location;
+ end.Offset() = start.Offset() + r.length;
+
+ textMarkerRange = GeckoTextMarkerRange(start, end);
+ // Crop range to accessible
+ textMarkerRange.Crop(aAccessible);
+
+ return textMarkerRange;
+}
+
+- (NSString*)moxStringForRange:(NSValue*)range {
+ MOZ_ASSERT(mGeckoAccessible);
+ GeckoTextMarkerRange textMarkerRange =
+ TextMarkerSubrange(mGeckoAccessible, range);
+
+ return textMarkerRange.Text();
+}
+
+- (NSAttributedString*)moxAttributedStringForRange:(NSValue*)range {
+ MOZ_ASSERT(mGeckoAccessible);
+ GeckoTextMarkerRange textMarkerRange =
+ TextMarkerSubrange(mGeckoAccessible, range);
+
+ return textMarkerRange.AttributedText();
+}
+
+- (NSValue*)moxBoundsForRange:(NSValue*)range {
+ MOZ_ASSERT(mGeckoAccessible);
+ GeckoTextMarkerRange textMarkerRange =
+ TextMarkerSubrange(mGeckoAccessible, range);
+
+ return textMarkerRange.Bounds();
+}
+
+@end