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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/TabParent.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());
NS_ASSERTION(!mOuterDoc, "Why do we still have a child doc?");
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.
if (!mOuterDoc) {
uint32_t childCount = mChildren.Length();
for (uint32_t idx = 0; idx < childCount; idx++)
mChildren[idx]->Shutdown();
} else {
if (mChildren.Length() != 1)
MOZ_CRASH("outer doc doesn't own adoc!");
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)
{
// DocAccessibleParent::AddChildDoc tolerates replacing one document with
// another. We must reflect that here.
MOZ_ASSERT(aChildDoc);
MOZ_ASSERT(mChildren.Length() <= 1);
if (mChildren.IsEmpty()) {
mChildren.AppendElement(aChildDoc);
} else {
mChildren.ReplaceElementAt(0, 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);
if (mChildren.RemoveElement(aChildDoc)) {
mOuterDoc = false;
}
}
template <class Derived>
bool
ProxyAccessibleBase<Derived>::MustPruneChildren() const
{
// this is the equivalent to nsAccUtils::MustPrune for proxies and should be
// kept in sync with that.
if (mRole != roles::MENUITEM && mRole != roles::COMBOBOX_OPTION
&& mRole != roles::OPTION && mRole != roles::ENTRY
&& mRole != roles::FLAT_EQUATION && mRole != roles::PASSWORD_TEXT
&& mRole != roles::PUSHBUTTON && mRole != roles::TOGGLE_BUTTON
&& mRole != roles::GRAPHIC && mRole != roles::SLIDER
&& mRole != roles::PROGRESSBAR && mRole != roles::SEPARATOR)
return false;
if (mChildren.Length() != 1)
return false;
return mChildren[0]->Role() == roles::TEXT_LEAF
|| mChildren[0]->Role() == roles::STATICTEXT;
}
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::TabParent*>(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 ProxyAccessibleBase<ProxyAccessible>;
} // namespace a11y
} // namespace mozilla
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