bool
DocAccessibleParent::AddChildDoc(DocAccessibleParent* aChildDoc,
uint64_t aParentID, bool aCreating)
{
// We do not use GetAccessible here because we want to be sure to not get the
// document it self.
ProxyEntry* e = mAccessibles.GetEntry(aParentID);
if (!e)
return false;
ProxyAccessible* outerDoc = e->mProxy;
MOZ_ASSERT(outerDoc);
// OuterDocAccessibles are expected to only have a document as a child.
// However for compatibility we tolerate replacing one document with another
// here.
if (outerDoc->ChildrenCount() > 1 ||
(outerDoc->ChildrenCount() == 1 && !outerDoc->ChildAt(0)->IsDoc())) {
return false;
}
aChildDoc->mParent = outerDoc;
outerDoc->SetChildDoc(aChildDoc);
mChildDocs.AppendElement(aChildDoc);
aChildDoc->mParentDoc = this;
if (aCreating) {
ProxyCreated(aChildDoc, Interfaces::DOCUMENT | Interfaces::HYPERTEXT);
}
return true;
}
ipc::IPCResult
DocAccessibleParent::AddChildDoc(DocAccessibleParent* aChildDoc,
uint64_t aParentID, bool aCreating)
{
// We do not use GetAccessible here because we want to be sure to not get the
// document it self.
ProxyEntry* e = mAccessibles.GetEntry(aParentID);
if (!e) {
return IPC_FAIL(this, "binding to nonexistant proxy!");
}
ProxyAccessible* outerDoc = e->mProxy;
MOZ_ASSERT(outerDoc);
// OuterDocAccessibles are expected to only have a document as a child.
// However for compatibility we tolerate replacing one document with another
// here.
if (outerDoc->ChildrenCount() > 1 ||
(outerDoc->ChildrenCount() == 1 && !outerDoc->ChildAt(0)->IsDoc())) {
return IPC_FAIL(this, "binding to proxy that can't be a outerDoc!");
}
aChildDoc->SetParent(outerDoc);
outerDoc->SetChildDoc(aChildDoc);
mChildDocs.AppendElement(aChildDoc->mActorID);
aChildDoc->mParentDoc = mActorID;
if (aCreating) {
ProxyCreated(aChildDoc, Interfaces::DOCUMENT | Interfaces::HYPERTEXT);
}
return IPC_OK();
}
bool
DocAccessibleParent::RecvShowEvent(const ShowEventData& aData,
const bool& aFromUser)
{
if (mShutdown)
return true;
MOZ_DIAGNOSTIC_ASSERT(CheckDocTree());
if (aData.NewTree().IsEmpty()) {
NS_ERROR("no children being added");
return false;
}
ProxyAccessible* parent = GetAccessible(aData.ID());
// XXX This should really never happen, but sometimes we fail to fire the
// required show events.
if (!parent) {
NS_ERROR("adding child to unknown accessible");
return true;
}
uint32_t newChildIdx = aData.Idx();
if (newChildIdx > parent->ChildrenCount()) {
NS_ERROR("invalid index to add child at");
return true;
}
uint32_t consumed = AddSubtree(parent, aData.NewTree(), 0, newChildIdx);
MOZ_ASSERT(consumed == aData.NewTree().Length());
// XXX This shouldn't happen, but if we failed to add children then the below
// is pointless and can crash.
if (!consumed) {
return true;
}
#ifdef DEBUG
for (uint32_t i = 0; i < consumed; i++) {
uint64_t id = aData.NewTree()[i].ID();
MOZ_ASSERT(mAccessibles.GetEntry(id));
}
#endif
MOZ_DIAGNOSTIC_ASSERT(CheckDocTree());
ProxyAccessible* target = parent->ChildAt(newChildIdx);
ProxyShowHideEvent(target, parent, true, aFromUser);
if (!nsCoreUtils::AccEventObserversExist()) {
return true;
}
uint32_t type = nsIAccessibleEvent::EVENT_SHOW;
xpcAccessibleGeneric* xpcAcc = GetXPCAccessible(target);
xpcAccessibleDocument* doc = GetAccService()->GetXPCDocument(this);
nsIDOMNode* node = nullptr;
RefPtr<xpcAccEvent> event = new xpcAccEvent(type, xpcAcc, doc, node,
aFromUser);
nsCoreUtils::DispatchAccEvent(Move(event));
return true;
}
