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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=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 "mozilla/dom/HTMLAllCollection.h"
#include "mozilla/dom/HTMLAllCollectionBinding.h"
#include "mozilla/dom/Nullable.h"
#include "mozilla/dom/Element.h"
#include "nsHTMLDocument.h"
namespace mozilla {
namespace dom {
HTMLAllCollection::HTMLAllCollection(nsHTMLDocument* aDocument)
: mDocument(aDocument)
{
MOZ_ASSERT(mDocument);
}
HTMLAllCollection::~HTMLAllCollection()
{
}
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(HTMLAllCollection,
mDocument,
mCollection,
mNamedMap)
NS_IMPL_CYCLE_COLLECTING_ADDREF(HTMLAllCollection)
NS_IMPL_CYCLE_COLLECTING_RELEASE(HTMLAllCollection)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(HTMLAllCollection)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
nsINode*
HTMLAllCollection::GetParentObject() const
{
return mDocument;
}
uint32_t
HTMLAllCollection::Length()
{
return Collection()->Length(true);
}
nsIContent*
HTMLAllCollection::Item(uint32_t aIndex)
{
return Collection()->Item(aIndex);
}
nsContentList*
HTMLAllCollection::Collection()
{
if (!mCollection) {
nsIDocument* document = mDocument;
mCollection = document->GetElementsByTagName(NS_LITERAL_STRING("*"));
MOZ_ASSERT(mCollection);
}
return mCollection;
}
static bool
IsAllNamedElement(nsIContent* aContent)
{
return aContent->IsAnyOfHTMLElements(nsGkAtoms::a,
nsGkAtoms::applet,
nsGkAtoms::button,
nsGkAtoms::embed,
nsGkAtoms::form,
nsGkAtoms::iframe,
nsGkAtoms::img,
nsGkAtoms::input,
nsGkAtoms::map,
nsGkAtoms::meta,
nsGkAtoms::object,
nsGkAtoms::select,
nsGkAtoms::textarea,
nsGkAtoms::frame,
nsGkAtoms::frameset);
}
static bool
DocAllResultMatch(Element* aElement, int32_t aNamespaceID, nsIAtom* aAtom,
void* aData)
{
if (aElement->GetID() == aAtom) {
return true;
}
nsGenericHTMLElement* elm = nsGenericHTMLElement::FromContent(aElement);
if (!elm) {
return false;
}
if (!IsAllNamedElement(elm)) {
return false;
}
const nsAttrValue* val = elm->GetParsedAttr(nsGkAtoms::name);
return val && val->Type() == nsAttrValue::eAtom &&
val->GetAtomValue() == aAtom;
}
nsContentList*
HTMLAllCollection::GetDocumentAllList(const nsAString& aID)
{
if (nsContentList* docAllList = mNamedMap.GetWeak(aID)) {
return docAllList;
}
nsCOMPtr<nsIAtom> id = NS_Atomize(aID);
RefPtr<nsContentList> docAllList =
new nsContentList(mDocument, DocAllResultMatch, nullptr, nullptr, true, id);
mNamedMap.Put(aID, docAllList);
return docAllList;
}
void
HTMLAllCollection::NamedGetter(const nsAString& aID,
bool& aFound,
Nullable<OwningNodeOrHTMLCollection>& aResult)
{
if (aID.IsEmpty()) {
aFound = false;
aResult.SetNull();
return;
}
nsContentList* docAllList = GetDocumentAllList(aID);
if (!docAllList) {
aFound = false;
aResult.SetNull();
return;
}
// Check if there are more than 1 entries. Do this by getting the second one
// rather than the length since getting the length always requires walking
// the entire document.
if (docAllList->Item(1, true)) {
aFound = true;
aResult.SetValue().SetAsHTMLCollection() = docAllList;
return;
}
// There's only 0 or 1 items. Return the first one or null.
if (nsIContent* node = docAllList->Item(0, true)) {
aFound = true;
aResult.SetValue().SetAsNode() = node;
return;
}
aFound = false;
aResult.SetNull();
}
void
HTMLAllCollection::GetSupportedNames(nsTArray<nsString>& aNames)
{
// XXXbz this is very similar to nsContentList::GetSupportedNames,
// but has to check IsAllNamedElement for the name case.
AutoTArray<nsIAtom*, 8> atoms;
for (uint32_t i = 0; i < Length(); ++i) {
nsIContent *content = Item(i);
if (content->HasID()) {
nsIAtom* id = content->GetID();
MOZ_ASSERT(id != nsGkAtoms::_empty,
"Empty ids don't get atomized");
if (!atoms.Contains(id)) {
atoms.AppendElement(id);
}
}
nsGenericHTMLElement* el = nsGenericHTMLElement::FromContent(content);
if (el) {
// Note: nsINode::HasName means the name is exposed on the document,
// which is false for options, so we don't check it here.
const nsAttrValue* val = el->GetParsedAttr(nsGkAtoms::name);
if (val && val->Type() == nsAttrValue::eAtom &&
IsAllNamedElement(content)) {
nsIAtom* name = val->GetAtomValue();
MOZ_ASSERT(name != nsGkAtoms::_empty,
"Empty names don't get atomized");
if (!atoms.Contains(name)) {
atoms.AppendElement(name);
}
}
}
}
uint32_t atomsLen = atoms.Length();
nsString* names = aNames.AppendElements(atomsLen);
for (uint32_t i = 0; i < atomsLen; ++i) {
atoms[i]->ToString(names[i]);
}
}
JSObject*
HTMLAllCollection::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return HTMLAllCollectionBinding::Wrap(aCx, this, aGivenProto);
}
} // namespace dom
} // namespace mozilla
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