Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 169 insertions, 0 deletions

diff --git a/accessible/ipc/ProxyAccessibleBase.cpp b/accessible/ipc/ProxyAccessibleBase.cpp
new file mode 100644
index 0000000000..d0264ce86c
--- /dev/null
+++ b/accessible/ipc/ProxyAccessibleBase.cpp
@@ -0,0 +1,169 @@
+/* -*- 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 "DocAccessible.h"
+#include "mozilla/a11y/DocAccessibleParent.h"
+#include "mozilla/a11y/DocManager.h"
+#include "mozilla/a11y/Platform.h"
+#include "mozilla/a11y/ProxyAccessibleBase.h"
+#include "mozilla/a11y/ProxyAccessible.h"
+#include "mozilla/a11y/Role.h"
+#include "mozilla/dom/Element.h"
+#include "mozilla/dom/BrowserParent.h"
+#include "mozilla/Unused.h"
+#include "RelationType.h"
+#include "xpcAccessibleDocument.h"
+
+namespace mozilla {
+namespace a11y {
+
+template <class Derived>
+void ProxyAccessibleBase<Derived>::Shutdown() {
+  MOZ_DIAGNOSTIC_ASSERT(!IsDoc());
+  xpcAccessibleDocument* xpcDoc =
+      GetAccService()->GetCachedXPCDocument(Document());
+  if (xpcDoc) {
+    xpcDoc->NotifyOfShutdown(static_cast<Derived*>(this));
+  }
+
+  // XXX Ideally  this wouldn't be necessary, but it seems OuterDoc accessibles
+  // can be destroyed before the doc they own.
+  uint32_t childCount = mChildren.Length();
+  if (!mOuterDoc) {
+    for (uint32_t idx = 0; idx < childCount; idx++) mChildren[idx]->Shutdown();
+  } else {
+    if (childCount > 1) {
+      MOZ_CRASH("outer doc has too many documents!");
+    } else if (childCount == 1) {
+      mChildren[0]->AsDoc()->Unbind();
+    }
+  }
+
+  mChildren.Clear();
+  ProxyDestroyed(static_cast<Derived*>(this));
+  mDoc->RemoveAccessible(static_cast<Derived*>(this));
+}
+
+template <class Derived>
+void ProxyAccessibleBase<Derived>::SetChildDoc(DocAccessibleParent* aChildDoc) {
+  MOZ_ASSERT(aChildDoc);
+  MOZ_ASSERT(mChildren.Length() == 0);
+  mChildren.AppendElement(aChildDoc);
+  mOuterDoc = true;
+}
+
+template <class Derived>
+void ProxyAccessibleBase<Derived>::ClearChildDoc(
+    DocAccessibleParent* aChildDoc) {
+  MOZ_ASSERT(aChildDoc);
+  // This is possible if we're replacing one document with another: Doc 1
+  // has not had a chance to remove itself, but was already replaced by Doc 2
+  // in SetChildDoc(). This could result in two subsequent calls to
+  // ClearChildDoc() even though mChildren.Length() == 1.
+  MOZ_ASSERT(mChildren.Length() <= 1);
+  mChildren.RemoveElement(aChildDoc);
+}
+
+template <class Derived>
+uint32_t ProxyAccessibleBase<Derived>::EmbeddedChildCount() const {
+  size_t count = 0, kids = mChildren.Length();
+  for (size_t i = 0; i < kids; i++) {
+    if (mChildren[i]->IsEmbeddedObject()) {
+      count++;
+    }
+  }
+
+  return count;
+}
+
+template <class Derived>
+int32_t ProxyAccessibleBase<Derived>::IndexOfEmbeddedChild(
+    const Derived* aChild) {
+  size_t index = 0, kids = mChildren.Length();
+  for (size_t i = 0; i < kids; i++) {
+    if (mChildren[i]->IsEmbeddedObject()) {
+      if (mChildren[i] == aChild) {
+        return index;
+      }
+
+      index++;
+    }
+  }
+
+  return -1;
+}
+
+template <class Derived>
+Derived* ProxyAccessibleBase<Derived>::EmbeddedChildAt(size_t aChildIdx) {
+  size_t index = 0, kids = mChildren.Length();
+  for (size_t i = 0; i < kids; i++) {
+    if (!mChildren[i]->IsEmbeddedObject()) {
+      continue;
+    }
+
+    if (index == aChildIdx) {
+      return mChildren[i];
+    }
+
+    index++;
+  }
+
+  return nullptr;
+}
+
+template <class Derived>
+Accessible* ProxyAccessibleBase<Derived>::OuterDocOfRemoteBrowser() const {
+  auto tab = static_cast<dom::BrowserParent*>(mDoc->Manager());
+  dom::Element* frame = tab->GetOwnerElement();
+  NS_ASSERTION(frame, "why isn't the tab in a frame!");
+  if (!frame) return nullptr;
+
+  DocAccessible* chromeDoc = GetExistingDocAccessible(frame->OwnerDoc());
+
+  return chromeDoc ? chromeDoc->GetAccessible(frame) : nullptr;
+}
+
+template <class Derived>
+void ProxyAccessibleBase<Derived>::SetParent(Derived* aParent) {
+  MOZ_ASSERT(IsDoc(), "we should only reparent documents");
+  if (!aParent) {
+    mParent = kNoParent;
+  } else {
+    MOZ_ASSERT(!aParent->IsDoc());
+    mParent = aParent->ID();
+  }
+}
+
+template <class Derived>
+Derived* ProxyAccessibleBase<Derived>::Parent() const {
+  if (mParent == kNoParent) {
+    return nullptr;
+  }
+
+  // if we are not a document then are parent is another proxy in the same
+  // document.  That means we can just ask our document for the proxy with our
+  // parent id.
+  if (!IsDoc()) {
+    return Document()->GetAccessible(mParent);
+  }
+
+  // If we are a top level document then our parent is not a proxy.
+  if (AsDoc()->IsTopLevel()) {
+    return nullptr;
+  }
+
+  // Finally if we are a non top level document then our parent id is for a
+  // proxy in our parent document so get the proxy from there.
+  DocAccessibleParent* parentDoc = AsDoc()->ParentDoc();
+  MOZ_ASSERT(parentDoc);
+  MOZ_ASSERT(mParent);
+  return parentDoc->GetAccessible(mParent);
+}
+
+template class ProxyAccessibleBase<ProxyAccessible>;
+
+}  // namespace a11y
+}  // namespace mozilla