1 files changed, 228 insertions, 0 deletions
diff --git a/accessible/mac/mozActionElements.mm b/accessible/mac/mozActionElements.mm
new file mode 100644
index 0000000000..f39f2c8ad5
--- /dev/null
+++ b/accessible/mac/mozActionElements.mm
@@ -0,0 +1,228 @@
+/* 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/. */
+
+#import "mozActionElements.h"
+
+#import "MacUtils.h"
+#include "LocalAccessible-inl.h"
+#include "DocAccessible.h"
+#include "XULTabAccessible.h"
+#include "HTMLFormControlAccessible.h"
+
+#include "nsCocoaUtils.h"
+#include "mozilla/FloatingPoint.h"
+
+using namespace mozilla::a11y;
+
+@implementation mozButtonAccessible
+
+- (NSNumber*)moxHasPopup {
+  return @([self stateWithMask:states::HASPOPUP] != 0);
+}
+
+- (NSString*)moxPopupValue {
+  if ([self stateWithMask:states::HASPOPUP] != 0) {
+    return utils::GetAccAttr(self, nsGkAtoms::aria_haspopup);
+  }
+
+  return nil;
+}
+
+@end
+
+@implementation mozPopupButtonAccessible
+
+- (NSString*)moxTitle {
+  // Popup buttons don't have titles.
+  return @"";
+}
+
+- (BOOL)moxBlockSelector:(SEL)selector {
+  if (selector == @selector(moxHasPopup)) {
+    return YES;
+  }
+
+  return [super moxBlockSelector:selector];
+}
+
+- (NSArray*)moxChildren {
+  if ([self stateWithMask:states::EXPANDED] == 0) {
+    // If the popup button is collapsed don't return its children.
+    return @[];
+  }
+
+  return [super moxChildren];
+}
+
+- (void)stateChanged:(uint64_t)state isEnabled:(BOOL)enabled {
+  [super stateChanged:state isEnabled:enabled];
+
+  if (state == states::EXPANDED) {
+    // If the EXPANDED state is updated, fire AXMenu events on the
+    // popups child which is the actual menu.
+    if (mozAccessible* popup = (mozAccessible*)[self childAt:0]) {
+      [popup moxPostNotification:(enabled ? @"AXMenuOpened" : @"AXMenuClosed")];
+    }
+  }
+}
+
+@end
+
+@implementation mozRadioButtonAccessible
+
+- (NSArray*)moxLinkedUIElements {
+  return [[self getRelationsByType:RelationType::MEMBER_OF]
+      arrayByAddingObjectsFromArray:[super moxLinkedUIElements]];
+}
+
+@end
+
+@implementation mozCheckboxAccessible
+
+- (int)isChecked {
+  // check if we're checked or in a mixed state
+  uint64_t state =
+      [self stateWithMask:(states::CHECKED | states::PRESSED | states::MIXED)];
+  if (state & (states::CHECKED | states::PRESSED)) {
+    return kChecked;
+  }
+
+  if (state & states::MIXED) {
+    return kMixed;
+  }
+
+  return kUnchecked;
+}
+
+- (id)moxValue {
+  NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
+
+  return [NSNumber numberWithInt:[self isChecked]];
+
+  NS_OBJC_END_TRY_BLOCK_RETURN(nil);
+}
+
+- (void)stateChanged:(uint64_t)state isEnabled:(BOOL)enabled {
+  [super stateChanged:state isEnabled:enabled];
+
+  if (state & (states::CHECKED | states::PRESSED | states::MIXED)) {
+    [self moxPostNotification:NSAccessibilityValueChangedNotification];
+  }
+}
+
+@end
+
+@implementation mozPaneAccessible
+
+- (NSArray*)moxChildren {
+  // By default, all tab panels are exposed in the a11y tree
+  // even if the tab they represent isn't the active tab. To
+  // prevent VoiceOver from navigating background tab content,
+  // only expose the tab panel that is currently on screen.
+  for (mozAccessible* child in [super moxChildren]) {
+    if (!([child state] & states::OFFSCREEN)) {
+      return [NSArray arrayWithObject:GetObjectOrRepresentedView(child)];
+    }
+  }
+  MOZ_ASSERT_UNREACHABLE("We have no on screen tab content?");
+  return @[];
+}
+
+@end
+
+@implementation mozIncrementableAccessible
+
+- (id)moxValue {
+  return [NSNumber numberWithDouble:mGeckoAccessible->CurValue()];
+}
+
+- (NSString*)moxValueDescription {
+  nsAutoString valueDesc;
+  mGeckoAccessible->Value(valueDesc);
+  return nsCocoaUtils::ToNSString(valueDesc);
+}
+- (id)moxMinValue {
+  return [NSNumber numberWithDouble:mGeckoAccessible->MinValue()];
+}
+
+- (id)moxMaxValue {
+  return [NSNumber numberWithDouble:mGeckoAccessible->MaxValue()];
+}
+
+- (void)moxSetValue:(id)value {
+  [self setValue:([value doubleValue])];
+}
+
+- (void)moxPerformIncrement {
+  [self changeValueBySteps:1];
+}
+
+- (void)moxPerformDecrement {
+  [self changeValueBySteps:-1];
+}
+
+- (NSString*)moxOrientation {
+  RefPtr<AccAttributes> attributes = mGeckoAccessible->Attributes();
+  if (attributes) {
+    nsAutoString result;
+    attributes->GetAttribute(nsGkAtoms::aria_orientation, result);
+    if (result.Equals(u"horizontal"_ns)) {
+      return NSAccessibilityHorizontalOrientationValue;
+    } else if (result.Equals(u"vertical"_ns)) {
+      return NSAccessibilityVerticalOrientationValue;
+    }
+  }
+
+  return NSAccessibilityUnknownOrientationValue;
+}
+
+- (void)handleAccessibleEvent:(uint32_t)eventType {
+  switch (eventType) {
+    case nsIAccessibleEvent::EVENT_TEXT_VALUE_CHANGE:
+    case nsIAccessibleEvent::EVENT_VALUE_CHANGE:
+      [self moxPostNotification:NSAccessibilityValueChangedNotification];
+      break;
+    default:
+      [super handleAccessibleEvent:eventType];
+      break;
+  }
+}
+
+/*
+ * Updates the accessible's current value by factor and step.
+ *
+ * factor: A signed integer representing the number of times to
+ *    apply step to the current value. A positive value will increment,
+ *    while a negative one will decrement.
+ * step: An unsigned integer specified by the webauthor and indicating the
+ *    amount by which to increment/decrement the current value.
+ */
+- (void)changeValueBySteps:(int)factor {
+  MOZ_ASSERT(mGeckoAccessible, "mGeckoAccessible is null");
+
+  double newValue =
+      mGeckoAccessible->CurValue() + (mGeckoAccessible->Step() * factor);
+  [self setValue:(newValue)];
+}
+
+/*
+ * Updates the accessible's current value to the specified value
+ */
+- (void)setValue:(double)value {
+  MOZ_ASSERT(mGeckoAccessible, "mGeckoAccessible is null");
+  mGeckoAccessible->SetCurValue(value);
+}
+
+@end
+
+@implementation mozDatePickerAccessible
+
+- (NSString*)moxTitle {
+  return utils::LocalizedString(u"dateField"_ns);
+}
+
+@end