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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 "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
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