1 files changed, 288 insertions, 0 deletions
diff --git a/accessible/xul/XULElementAccessibles.cpp b/accessible/xul/XULElementAccessibles.cpp
new file mode 100644
index 000000000..b50ddb4ed
--- /dev/null
+++ b/accessible/xul/XULElementAccessibles.cpp
@@ -0,0 +1,288 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 "XULElementAccessibles.h"
+
+#include "Accessible-inl.h"
+#include "BaseAccessibles.h"
+#include "DocAccessible-inl.h"
+#include "nsAccUtils.h"
+#include "nsCoreUtils.h"
+#include "nsTextEquivUtils.h"
+#include "Relation.h"
+#include "Role.h"
+#include "States.h"
+#include "TextUpdater.h"
+
+#ifdef A11Y_LOG
+#include "Logging.h"
+#endif
+
+#include "nsIDOMXULDescriptionElement.h"
+#include "nsNameSpaceManager.h"
+#include "nsNetUtil.h"
+#include "nsString.h"
+#include "nsTextBoxFrame.h"
+
+using namespace mozilla::a11y;
+
+////////////////////////////////////////////////////////////////////////////////
+// XULLabelAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+XULLabelAccessible::
+  XULLabelAccessible(nsIContent* aContent, DocAccessible* aDoc) :
+  HyperTextAccessibleWrap(aContent, aDoc)
+{
+  mType = eXULLabelType;
+
+  // If @value attribute is given then it's rendered instead text content. In
+  // this case we need to create a text leaf accessible to make @value attribute
+  // accessible.
+  // XXX: text interface doesn't let you get the text by words.
+  nsTextBoxFrame* textBoxFrame = do_QueryFrame(mContent->GetPrimaryFrame());
+  if (textBoxFrame) {
+    mValueTextLeaf = new XULLabelTextLeafAccessible(mContent, mDoc);
+    mDoc->BindToDocument(mValueTextLeaf, nullptr);
+
+    nsAutoString text;
+    textBoxFrame->GetCroppedTitle(text);
+    mValueTextLeaf->SetText(text);
+    AppendChild(mValueTextLeaf);
+  }
+}
+
+void
+XULLabelAccessible::Shutdown()
+{
+  mValueTextLeaf = nullptr;
+  HyperTextAccessibleWrap::Shutdown();
+}
+
+ENameValueFlag
+XULLabelAccessible::NativeName(nsString& aName)
+{
+  // if the value attr doesn't exist, the screen reader must get the accessible text
+  // from the accessible text interface or from the children
+  if (mValueTextLeaf)
+    return mValueTextLeaf->Name(aName);
+
+  return Accessible::NativeName(aName);
+}
+
+role
+XULLabelAccessible::NativeRole()
+{
+  return roles::LABEL;
+}
+
+uint64_t
+XULLabelAccessible::NativeState()
+{
+  // Labels and description have read only state
+  // They are not focusable or selectable
+  return HyperTextAccessibleWrap::NativeState() | states::READONLY;
+}
+
+Relation
+XULLabelAccessible::RelationByType(RelationType aType)
+{
+  Relation rel = HyperTextAccessibleWrap::RelationByType(aType);
+  if (aType == RelationType::LABEL_FOR) {
+    // Caption is the label for groupbox
+    nsIContent* parent = mContent->GetFlattenedTreeParent();
+    if (parent && parent->IsXULElement(nsGkAtoms::caption)) {
+      Accessible* parent = Parent();
+      if (parent && parent->Role() == roles::GROUPING)
+        rel.AppendTarget(parent);
+    }
+  }
+
+  return rel;
+}
+
+void
+XULLabelAccessible::UpdateLabelValue(const nsString& aValue)
+{
+#ifdef A11Y_LOG
+  if (logging::IsEnabled(logging::eText)) {
+    logging::MsgBegin("TEXT", "text may be changed (xul:label @value update)");
+    logging::Node("container", mContent);
+    logging::MsgEntry("old text '%s'",
+                      NS_ConvertUTF16toUTF8(mValueTextLeaf->Text()).get());
+    logging::MsgEntry("new text: '%s'",
+                      NS_ConvertUTF16toUTF8(aValue).get());
+    logging::MsgEnd();
+  }
+#endif
+
+  TextUpdater::Run(mDoc, mValueTextLeaf, aValue);
+}
+
+
+////////////////////////////////////////////////////////////////////////////////
+// XULLabelTextLeafAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+role
+XULLabelTextLeafAccessible::NativeRole()
+{
+  return roles::TEXT_LEAF;
+}
+
+uint64_t
+XULLabelTextLeafAccessible::NativeState()
+{
+  return TextLeafAccessibleWrap::NativeState() | states::READONLY;
+}
+
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTooltipAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+XULTooltipAccessible::
+  XULTooltipAccessible(nsIContent* aContent, DocAccessible* aDoc) :
+  LeafAccessible(aContent, aDoc)
+{
+}
+
+uint64_t
+XULTooltipAccessible::NativeState()
+{
+  return LeafAccessible::NativeState() | states::READONLY;
+}
+
+role
+XULTooltipAccessible::NativeRole()
+{
+  return roles::TOOLTIP;
+}
+
+
+////////////////////////////////////////////////////////////////////////////////
+// XULLinkAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+XULLinkAccessible::
+  XULLinkAccessible(nsIContent* aContent, DocAccessible* aDoc) :
+  XULLabelAccessible(aContent, aDoc)
+{
+}
+
+XULLinkAccessible::~XULLinkAccessible()
+{
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// XULLinkAccessible: Accessible
+
+void
+XULLinkAccessible::Value(nsString& aValue)
+{
+  aValue.Truncate();
+
+  mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::href, aValue);
+}
+
+ENameValueFlag
+XULLinkAccessible::NativeName(nsString& aName)
+{
+  mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::value, aName);
+  if (!aName.IsEmpty())
+    return eNameOK;
+
+  nsTextEquivUtils::GetNameFromSubtree(this, aName);
+  return aName.IsEmpty() ? eNameOK : eNameFromSubtree;
+}
+
+role
+XULLinkAccessible::NativeRole()
+{
+  return roles::LINK;
+}
+
+
+uint64_t
+XULLinkAccessible::NativeLinkState() const
+{
+  return states::LINKED;
+}
+
+uint8_t
+XULLinkAccessible::ActionCount()
+{
+  return 1;
+}
+
+void
+XULLinkAccessible::ActionNameAt(uint8_t aIndex, nsAString& aName)
+{
+  aName.Truncate();
+
+  if (aIndex == eAction_Jump)
+    aName.AssignLiteral("jump");
+}
+
+bool
+XULLinkAccessible::DoAction(uint8_t aIndex)
+{
+  if (aIndex != eAction_Jump)
+    return false;
+
+  DoCommand();
+  return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// XULLinkAccessible: HyperLinkAccessible
+
+bool
+XULLinkAccessible::IsLink()
+{
+  // Expose HyperLinkAccessible unconditionally.
+  return true;
+}
+
+uint32_t
+XULLinkAccessible::StartOffset()
+{
+  // If XUL link accessible is not contained by hypertext accessible then
+  // start offset matches index in parent because the parent doesn't contains
+  // a text.
+  // XXX: accessible parent of XUL link accessible should be a hypertext
+  // accessible.
+  if (Accessible::IsLink())
+    return Accessible::StartOffset();
+  return IndexInParent();
+}
+
+uint32_t
+XULLinkAccessible::EndOffset()
+{
+  if (Accessible::IsLink())
+    return Accessible::EndOffset();
+  return IndexInParent() + 1;
+}
+
+already_AddRefed<nsIURI>
+XULLinkAccessible::AnchorURIAt(uint32_t aAnchorIndex)
+{
+  if (aAnchorIndex != 0)
+    return nullptr;
+
+  nsAutoString href;
+  mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::href, href);
+
+  nsCOMPtr<nsIURI> baseURI = mContent->GetBaseURI();
+  nsIDocument* document = mContent->OwnerDoc();
+
+  nsCOMPtr<nsIURI> anchorURI;
+  NS_NewURI(getter_AddRefs(anchorURI), href,
+            document->GetDocumentCharacterSet().get(),
+            baseURI);
+
+  return anchorURI.forget();
+}