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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
#include "mozilla/dom/HTMLOptionsCollection.h"
#include "mozilla/dom/HTMLOptionsCollectionBinding.h"
#include "mozilla/dom/HTMLOptionElement.h"
#include "mozilla/dom/HTMLSelectElement.h"
namespace mozilla::dom {
HTMLOptionsCollection::HTMLOptionsCollection(HTMLSelectElement* aSelect)
: mSelect(aSelect) {}
nsresult HTMLOptionsCollection::GetOptionIndex(Element* aOption,
int32_t aStartIndex,
bool aForward, int32_t* aIndex) {
// NOTE: aIndex shouldn't be set if the returned value isn't NS_OK.
int32_t index;
// Make the common case fast
if (aStartIndex == 0 && aForward) {
index = mElements.IndexOf(aOption);
if (index == -1) {
return NS_ERROR_FAILURE;
}
*aIndex = index;
return NS_OK;
}
int32_t high = mElements.Length();
int32_t step = aForward ? 1 : -1;
for (index = aStartIndex; index < high && index > -1; index += step) {
if (mElements[index] == aOption) {
*aIndex = index;
return NS_OK;
}
}
return NS_ERROR_FAILURE;
}
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(HTMLOptionsCollection, mElements, mSelect)
// nsISupports
// QueryInterface implementation for HTMLOptionsCollection
NS_INTERFACE_TABLE_HEAD(HTMLOptionsCollection)
NS_WRAPPERCACHE_INTERFACE_TABLE_ENTRY
NS_INTERFACE_TABLE(HTMLOptionsCollection, nsIHTMLCollection)
NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(HTMLOptionsCollection)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(HTMLOptionsCollection)
NS_IMPL_CYCLE_COLLECTING_RELEASE(HTMLOptionsCollection)
JSObject* HTMLOptionsCollection::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return HTMLOptionsCollection_Binding::Wrap(aCx, this, aGivenProto);
}
uint32_t HTMLOptionsCollection::Length() { return mElements.Length(); }
void HTMLOptionsCollection::SetLength(uint32_t aLength, ErrorResult& aError) {
mSelect->SetLength(aLength, aError);
}
void HTMLOptionsCollection::IndexedSetter(uint32_t aIndex,
HTMLOptionElement* aOption,
ErrorResult& aError) {
// if the new option is null, just remove this option. Note that it's safe
// to pass a too-large aIndex in here.
if (!aOption) {
mSelect->Remove(aIndex);
// We're done.
return;
}
// Now we're going to be setting an option in our collection
if (aIndex > mElements.Length()) {
// Fill our array with blank options up to (but not including, since we're
// about to change it) aIndex, for compat with other browsers.
SetLength(aIndex, aError);
if (NS_WARN_IF(aError.Failed())) {
return;
}
}
NS_ASSERTION(aIndex <= mElements.Length(), "SetLength lied");
if (aIndex == mElements.Length()) {
mSelect->AppendChild(*aOption, aError);
return;
}
// Find the option they're talking about and replace it
// hold a strong reference to follow COM rules.
RefPtr<HTMLOptionElement> refChild = ItemAsOption(aIndex);
if (!refChild) {
aError.Throw(NS_ERROR_UNEXPECTED);
return;
}
nsCOMPtr<nsINode> parent = refChild->GetParent();
if (!parent) {
return;
}
parent->ReplaceChild(*aOption, *refChild, aError);
}
int32_t HTMLOptionsCollection::SelectedIndex() {
return mSelect->SelectedIndex();
}
void HTMLOptionsCollection::SetSelectedIndex(int32_t aSelectedIndex) {
mSelect->SetSelectedIndex(aSelectedIndex);
}
Element* HTMLOptionsCollection::GetElementAt(uint32_t aIndex) {
return ItemAsOption(aIndex);
}
HTMLOptionElement* HTMLOptionsCollection::NamedGetter(const nsAString& aName,
bool& aFound) {
if (aName.IsEmpty()) {
aFound = false;
return nullptr;
}
uint32_t count = mElements.Length();
for (uint32_t i = 0; i < count; i++) {
HTMLOptionElement* content = mElements.ElementAt(i);
if (content && (content->AttrValueIs(kNameSpaceID_None, nsGkAtoms::name,
aName, eCaseMatters) ||
content->AttrValueIs(kNameSpaceID_None, nsGkAtoms::id,
aName, eCaseMatters))) {
aFound = true;
return content;
}
}
aFound = false;
return nullptr;
}
nsINode* HTMLOptionsCollection::GetParentObject() { return mSelect; }
DocGroup* HTMLOptionsCollection::GetDocGroup() const {
return mSelect ? mSelect->GetDocGroup() : nullptr;
}
void HTMLOptionsCollection::GetSupportedNames(nsTArray<nsString>& aNames) {
AutoTArray<nsAtom*, 8> atoms;
for (uint32_t i = 0; i < mElements.Length(); ++i) {
HTMLOptionElement* content = mElements.ElementAt(i);
if (content) {
// Note: HasName means the names is exposed on the document,
// which is false for options, so we don't check it here.
const nsAttrValue* val = content->GetParsedAttr(nsGkAtoms::name);
if (val && val->Type() == nsAttrValue::eAtom) {
nsAtom* name = val->GetAtomValue();
if (!atoms.Contains(name)) {
atoms.AppendElement(name);
}
}
if (content->HasID()) {
nsAtom* id = content->GetID();
if (!atoms.Contains(id)) {
atoms.AppendElement(id);
}
}
}
}
uint32_t atomsLen = atoms.Length();
nsString* names = aNames.AppendElements(atomsLen);
for (uint32_t i = 0; i < atomsLen; ++i) {
atoms[i]->ToString(names[i]);
}
}
void HTMLOptionsCollection::Add(const HTMLOptionOrOptGroupElement& aElement,
const Nullable<HTMLElementOrLong>& aBefore,
ErrorResult& aError) {
mSelect->Add(aElement, aBefore, aError);
}
void HTMLOptionsCollection::Remove(int32_t aIndex) { mSelect->Remove(aIndex); }
} // namespace mozilla::dom