1 files changed, 281 insertions, 0 deletions
diff --git a/accessible/mac/AccessibleWrap.mm b/accessible/mac/AccessibleWrap.mm
new file mode 100644
index 0000000000..ef2f4ba779
--- /dev/null
+++ b/accessible/mac/AccessibleWrap.mm
@@ -0,0 +1,281 @@
+/* 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 "DocAccessibleWrap.h"
+#include "nsObjCExceptions.h"
+#include "nsCocoaUtils.h"
+#include "nsUnicharUtils.h"
+
+#include "LocalAccessible-inl.h"
+#include "nsAccUtils.h"
+#include "mozilla/a11y/Role.h"
+#include "TextRange.h"
+#include "gfxPlatform.h"
+
+#import "MOXLandmarkAccessibles.h"
+#import "MOXMathAccessibles.h"
+#import "MOXTextMarkerDelegate.h"
+#import "MOXWebAreaAccessible.h"
+#import "mozAccessible.h"
+#import "mozActionElements.h"
+#import "mozHTMLAccessible.h"
+#import "mozSelectableElements.h"
+#import "mozTableAccessible.h"
+#import "mozTextAccessible.h"
+
+using namespace mozilla;
+using namespace mozilla::a11y;
+
+AccessibleWrap::AccessibleWrap(nsIContent* aContent, DocAccessible* aDoc)
+    : LocalAccessible(aContent, aDoc),
+      mNativeObject(nil),
+      mNativeInited(false) {
+  if (aContent && aContent->IsElement() && aDoc) {
+    // Check if this accessible is a live region and queue it
+    // it for dispatching an event after it has been inserted.
+    DocAccessibleWrap* doc = static_cast<DocAccessibleWrap*>(aDoc);
+    static const dom::Element::AttrValuesArray sLiveRegionValues[] = {
+        nsGkAtoms::OFF, nsGkAtoms::polite, nsGkAtoms::assertive, nullptr};
+    int32_t attrValue = nsAccUtils::FindARIAAttrValueIn(
+        aContent->AsElement(), nsGkAtoms::aria_live, sLiveRegionValues,
+        eIgnoreCase);
+    if (attrValue == 0) {
+      // aria-live is "off", do nothing.
+    } else if (attrValue > 0) {
+      // aria-live attribute is polite or assertive. It's live!
+      doc->QueueNewLiveRegion(this);
+    } else if (const nsRoleMapEntry* roleMap =
+                   aria::GetRoleMap(aContent->AsElement())) {
+      // aria role defines it as a live region. It's live!
+      if (roleMap->liveAttRule == ePoliteLiveAttr ||
+          roleMap->liveAttRule == eAssertiveLiveAttr) {
+        doc->QueueNewLiveRegion(this);
+      }
+    } else if (nsStaticAtom* value = GetAccService()->MarkupAttribute(
+                   aContent, nsGkAtoms::aria_live)) {
+      // HTML element defines it as a live region. It's live!
+      if (value == nsGkAtoms::polite || value == nsGkAtoms::assertive) {
+        doc->QueueNewLiveRegion(this);
+      }
+    }
+  }
+}
+
+AccessibleWrap::~AccessibleWrap() {}
+
+mozAccessible* AccessibleWrap::GetNativeObject() {
+  NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
+
+  if (!mNativeInited && !mNativeObject) {
+    // We don't creat OSX accessibles for xul tooltips, defunct accessibles,
+    // <br> (whitespace) elements, or pruned children.
+    //
+    // To maintain a scripting environment where the XPCOM accessible hierarchy
+    // look the same on all platforms, we still let the C++ objects be created
+    // though.
+    if (!IsXULTooltip() && !IsDefunct() && Role() != roles::WHITESPACE) {
+      mNativeObject = [[GetNativeType() alloc] initWithAccessible:this];
+    }
+  }
+
+  mNativeInited = true;
+
+  return mNativeObject;
+
+  NS_OBJC_END_TRY_BLOCK_RETURN(nil);
+}
+
+void AccessibleWrap::GetNativeInterface(void** aOutInterface) {
+  *aOutInterface = static_cast<void*>(GetNativeObject());
+}
+
+// overridden in subclasses to create the right kind of object. by default we
+// create a generic 'mozAccessible' node.
+Class AccessibleWrap::GetNativeType() {
+  NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
+
+  if (IsXULTabpanels()) {
+    return [mozPaneAccessible class];
+  }
+
+  if (IsTable()) {
+    return [mozTableAccessible class];
+  }
+
+  if (IsTableRow()) {
+    return [mozTableRowAccessible class];
+  }
+
+  if (IsTableCell()) {
+    return [mozTableCellAccessible class];
+  }
+
+  if (IsDoc()) {
+    return [MOXWebAreaAccessible class];
+  }
+
+  return GetTypeFromRole(Role());
+
+  NS_OBJC_END_TRY_BLOCK_RETURN(nil);
+}
+
+// this method is very important. it is fired when an accessible object "dies".
+// after this point the object might still be around (because some 3rd party
+// still has a ref to it), but it is in fact 'dead'.
+void AccessibleWrap::Shutdown() {
+  // this ensure we will not try to re-create the native object.
+  mNativeInited = true;
+
+  // we really intend to access the member directly.
+  if (mNativeObject) {
+    [mNativeObject expire];
+    [mNativeObject release];
+    mNativeObject = nil;
+  }
+
+  LocalAccessible::Shutdown();
+}
+
+nsresult AccessibleWrap::HandleAccEvent(AccEvent* aEvent) {
+  NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
+
+  nsresult rv = LocalAccessible::HandleAccEvent(aEvent);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (IsDefunct()) {
+    // The accessible can become defunct after their events are handled.
+    return NS_OK;
+  }
+
+  uint32_t eventType = aEvent->GetEventType();
+
+  if (eventType == nsIAccessibleEvent::EVENT_SHOW) {
+    DocAccessibleWrap* doc = static_cast<DocAccessibleWrap*>(Document());
+    doc->ProcessNewLiveRegions();
+  }
+
+  return NS_OK;
+
+  NS_OBJC_END_TRY_BLOCK_RETURN(NS_ERROR_FAILURE);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// AccessibleWrap protected
+
+Class a11y::GetTypeFromRole(roles::Role aRole) {
+  NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
+
+  switch (aRole) {
+    case roles::COMBOBOX:
+      return [mozPopupButtonAccessible class];
+
+    case roles::PUSHBUTTON:
+      return [mozButtonAccessible class];
+
+    case roles::PAGETAB:
+      return [mozTabAccessible class];
+
+    case roles::DATE_EDITOR:
+      return [mozDatePickerAccessible class];
+
+    case roles::CHECKBUTTON:
+    case roles::TOGGLE_BUTTON:
+    case roles::SWITCH:
+    case roles::CHECK_MENU_ITEM:
+      return [mozCheckboxAccessible class];
+
+    case roles::RADIOBUTTON:
+    case roles::RADIO_MENU_ITEM:
+      return [mozRadioButtonAccessible class];
+
+    case roles::SPINBUTTON:
+    case roles::SLIDER:
+      return [mozIncrementableAccessible class];
+
+    case roles::HEADING:
+      return [mozHeadingAccessible class];
+
+    case roles::PAGETABLIST:
+      return [mozTabGroupAccessible class];
+
+    case roles::ENTRY:
+    case roles::CAPTION:
+    case roles::EDITCOMBOBOX:
+    case roles::PASSWORD_TEXT:
+      // normal textfield (static or editable)
+      return [mozTextAccessible class];
+
+    case roles::TEXT_LEAF:
+    case roles::STATICTEXT:
+      return [mozTextLeafAccessible class];
+
+    case roles::LANDMARK:
+      return [MOXLandmarkAccessible class];
+
+    case roles::LINK:
+      return [mozLinkAccessible class];
+
+    case roles::LISTBOX:
+      return [mozListboxAccessible class];
+
+    case roles::LISTITEM:
+      return [MOXListItemAccessible class];
+
+    case roles::OPTION: {
+      return [mozOptionAccessible class];
+    }
+
+    case roles::RICH_OPTION: {
+      return [mozSelectableChildAccessible class];
+    }
+
+    case roles::COMBOBOX_LIST:
+    case roles::MENUBAR:
+    case roles::MENUPOPUP: {
+      return [mozMenuAccessible class];
+    }
+
+    case roles::COMBOBOX_OPTION:
+    case roles::PARENT_MENUITEM:
+    case roles::MENUITEM: {
+      return [mozMenuItemAccessible class];
+    }
+
+    case roles::MATHML_ROOT:
+      return [MOXMathRootAccessible class];
+
+    case roles::MATHML_SQUARE_ROOT:
+      return [MOXMathSquareRootAccessible class];
+
+    case roles::MATHML_FRACTION:
+      return [MOXMathFractionAccessible class];
+
+    case roles::MATHML_SUB:
+    case roles::MATHML_SUP:
+    case roles::MATHML_SUB_SUP:
+      return [MOXMathSubSupAccessible class];
+
+    case roles::MATHML_UNDER:
+    case roles::MATHML_OVER:
+    case roles::MATHML_UNDER_OVER:
+      return [MOXMathUnderOverAccessible class];
+
+    case roles::OUTLINE:
+    case roles::TREE_TABLE:
+      return [mozOutlineAccessible class];
+
+    case roles::OUTLINEITEM:
+      return [mozOutlineRowAccessible class];
+
+    default:
+      return [mozAccessible class];
+  }
+
+  return nil;
+
+  NS_OBJC_END_TRY_BLOCK_RETURN(nil);
+}