1 files changed, 199 insertions, 0 deletions
diff --git a/accessible/html/HTMLListAccessible.cpp b/accessible/html/HTMLListAccessible.cpp
new file mode 100644
index 000000000..d5de25718
--- /dev/null
+++ b/accessible/html/HTMLListAccessible.cpp
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* 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 "HTMLListAccessible.h"
+
+#include "DocAccessible.h"
+#include "nsAccUtils.h"
+#include "Role.h"
+#include "States.h"
+
+#include "nsBlockFrame.h"
+#include "nsBulletFrame.h"
+
+using namespace mozilla;
+using namespace mozilla::a11y;
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLListAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+NS_IMPL_ISUPPORTS_INHERITED0(HTMLListAccessible, HyperTextAccessible)
+
+role
+HTMLListAccessible::NativeRole()
+{
+  a11y::role r = GetAccService()->MarkupRole(mContent);
+  return r != roles::NOTHING ? r : roles::LIST;
+}
+
+uint64_t
+HTMLListAccessible::NativeState()
+{
+  return HyperTextAccessibleWrap::NativeState() | states::READONLY;
+}
+
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLLIAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+HTMLLIAccessible::
+  HTMLLIAccessible(nsIContent* aContent, DocAccessible* aDoc) :
+  HyperTextAccessibleWrap(aContent, aDoc), mBullet(nullptr)
+{
+  mType = eHTMLLiType;
+
+  nsBlockFrame* blockFrame = do_QueryFrame(GetFrame());
+  if (blockFrame && blockFrame->HasBullet()) {
+    mBullet = new HTMLListBulletAccessible(mContent, mDoc);
+    Document()->BindToDocument(mBullet, nullptr);
+    AppendChild(mBullet);
+  }
+}
+
+NS_IMPL_ISUPPORTS_INHERITED0(HTMLLIAccessible, HyperTextAccessible)
+
+void
+HTMLLIAccessible::Shutdown()
+{
+  mBullet = nullptr;
+
+  HyperTextAccessibleWrap::Shutdown();
+}
+
+role
+HTMLLIAccessible::NativeRole()
+{
+  a11y::role r = GetAccService()->MarkupRole(mContent);
+  return r != roles::NOTHING ? r : roles::LISTITEM;
+}
+
+uint64_t
+HTMLLIAccessible::NativeState()
+{
+  return HyperTextAccessibleWrap::NativeState() | states::READONLY;
+}
+
+nsIntRect
+HTMLLIAccessible::Bounds() const
+{
+  nsIntRect rect = AccessibleWrap::Bounds();
+  if (rect.IsEmpty() || !mBullet || mBullet->IsInside())
+    return rect;
+
+  nsIntRect bulletRect = mBullet->Bounds();
+
+  rect.width += rect.x - bulletRect.x;
+  rect.x = bulletRect.x; // Move x coordinate of list item over to cover bullet as well
+  return rect;
+}
+
+bool
+HTMLLIAccessible::InsertChildAt(uint32_t aIndex, Accessible* aChild)
+{
+  // Adjust index if there's a bullet.
+  if (mBullet && aIndex == 0 && aChild != mBullet) {
+    return HyperTextAccessible::InsertChildAt(aIndex + 1, aChild);
+  }
+
+  return HyperTextAccessible::InsertChildAt(aIndex, aChild);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLLIAccessible: public
+
+void
+HTMLLIAccessible::UpdateBullet(bool aHasBullet)
+{
+  if (aHasBullet == !!mBullet) {
+    NS_NOTREACHED("Bullet and accessible are in sync already!");
+    return;
+  }
+
+  TreeMutation mt(this);
+  if (aHasBullet) {
+    mBullet = new HTMLListBulletAccessible(mContent, mDoc);
+    mDoc->BindToDocument(mBullet, nullptr);
+    InsertChildAt(0, mBullet);
+    mt.AfterInsertion(mBullet);
+  }
+  else {
+    mt.BeforeRemoval(mBullet);
+    RemoveChild(mBullet);
+    mBullet = nullptr;
+  }
+  mt.Done();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLListBulletAccessible
+////////////////////////////////////////////////////////////////////////////////
+HTMLListBulletAccessible::
+  HTMLListBulletAccessible(nsIContent* aContent, DocAccessible* aDoc) :
+  LeafAccessible(aContent, aDoc)
+{
+  mGenericTypes |= eText;
+  mStateFlags |= eSharedNode;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLListBulletAccessible: Accessible
+
+nsIFrame*
+HTMLListBulletAccessible::GetFrame() const
+{
+  nsBlockFrame* blockFrame = do_QueryFrame(mContent->GetPrimaryFrame());
+  return blockFrame ? blockFrame->GetBullet() : nullptr;
+}
+
+ENameValueFlag
+HTMLListBulletAccessible::Name(nsString &aName)
+{
+  aName.Truncate();
+
+  // Native anonymous content, ARIA can't be used. Get list bullet text.
+  nsBlockFrame* blockFrame = do_QueryFrame(mContent->GetPrimaryFrame());
+  if (blockFrame) {
+    blockFrame->GetSpokenBulletText(aName);
+  }
+
+  return eNameOK;
+}
+
+role
+HTMLListBulletAccessible::NativeRole()
+{
+  return roles::STATICTEXT;
+}
+
+uint64_t
+HTMLListBulletAccessible::NativeState()
+{
+  return LeafAccessible::NativeState() | states::READONLY;
+}
+
+void
+HTMLListBulletAccessible::AppendTextTo(nsAString& aText, uint32_t aStartOffset,
+                                       uint32_t aLength)
+{
+  nsAutoString bulletText;
+  nsBlockFrame* blockFrame = do_QueryFrame(mContent->GetPrimaryFrame());
+  if (blockFrame)
+    blockFrame->GetSpokenBulletText(bulletText);
+
+  aText.Append(Substring(bulletText, aStartOffset, aLength));
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLListBulletAccessible: public
+
+bool
+HTMLListBulletAccessible::IsInside() const
+{
+  nsBlockFrame* blockFrame = do_QueryFrame(mContent->GetPrimaryFrame());
+  return blockFrame ? blockFrame->HasInsideBullet() : false;
+}