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tenfourfox/dom/html/HTMLOptionsCollection.cpp

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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/HTMLOptionsCollection.h"
#include "HTMLOptGroupElement.h"
#include "mozAutoDocUpdate.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/HTMLOptionElement.h"
#include "mozilla/dom/HTMLOptionsCollectionBinding.h"
#include "mozilla/dom/HTMLSelectElement.h"
#include "nsContentCreatorFunctions.h"
#include "nsError.h"
#include "nsFormSubmission.h"
#include "nsGkAtoms.h"
#include "nsIComboboxControlFrame.h"
#include "nsIDocument.h"
#include "nsIDOMHTMLOptGroupElement.h"
#include "nsIFormControlFrame.h"
#include "nsIForm.h"
#include "nsIFormProcessor.h"
#include "nsIListControlFrame.h"
#include "nsLayoutUtils.h"
#include "nsMappedAttributes.h"
#include "nsRuleData.h"
#include "nsServiceManagerUtils.h"
#include "nsStyleConsts.h"
#include "jsfriendapi.h"
namespace mozilla {
namespace 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,
nsIDOMHTMLOptionsCollection,
nsIDOMHTMLCollection)
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 HTMLOptionsCollectionBinding::Wrap(aCx, this, aGivenProto);
}
NS_IMETHODIMP
HTMLOptionsCollection::GetLength(uint32_t* aLength)
{
*aLength = mElements.Length();
return NS_OK;
}
NS_IMETHODIMP
HTMLOptionsCollection::SetLength(uint32_t aLength)
{
return mSelect->SetLength(aLength);
}
NS_IMETHODIMP
HTMLOptionsCollection::SetOption(uint32_t aIndex,
nsIDOMHTMLOptionElement* aOption)
{
// 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 NS_OK;
}
nsresult rv = NS_OK;
uint32_t index = uint32_t(aIndex);
// Now we're going to be setting an option in our collection
if (index > 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.
rv = SetLength(index);
NS_ENSURE_SUCCESS(rv, rv);
}
NS_ASSERTION(index <= mElements.Length(), "SetLength lied");
nsCOMPtr<nsIDOMNode> ret;
if (index == mElements.Length()) {
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(aOption);
rv = mSelect->AppendChild(node, getter_AddRefs(ret));
} else {
// Find the option they're talking about and replace it
// hold a strong reference to follow COM rules.
RefPtr<HTMLOptionElement> refChild = ItemAsOption(index);
NS_ENSURE_TRUE(refChild, NS_ERROR_UNEXPECTED);
nsCOMPtr<nsINode> parent = refChild->GetParent();
if (parent) {
nsCOMPtr<nsINode> node = do_QueryInterface(aOption);
ErrorResult res;
parent->ReplaceChild(*node, *refChild, res);
rv = res.StealNSResult();
}
}
return rv;
}
int32_t
HTMLOptionsCollection::GetSelectedIndex(ErrorResult& aError)
{
int32_t selectedIndex;
aError = mSelect->GetSelectedIndex(&selectedIndex);
return selectedIndex;
}
NS_IMETHODIMP
HTMLOptionsCollection::GetSelectedIndex(int32_t* aSelectedIndex)
{
ErrorResult rv;
*aSelectedIndex = GetSelectedIndex(rv);
return rv.StealNSResult();
}
void
HTMLOptionsCollection::SetSelectedIndex(int32_t aSelectedIndex,
ErrorResult& aError)
{
aError = mSelect->SetSelectedIndex(aSelectedIndex);
}
NS_IMETHODIMP
HTMLOptionsCollection::SetSelectedIndex(int32_t aSelectedIndex)
{
ErrorResult rv;
SetSelectedIndex(aSelectedIndex, rv);
return rv.StealNSResult();
}
NS_IMETHODIMP
HTMLOptionsCollection::Item(uint32_t aIndex, nsIDOMNode** aReturn)
{
nsISupports* item = GetElementAt(aIndex);
if (!item) {
*aReturn = nullptr;
return NS_OK;
}
return CallQueryInterface(item, aReturn);
}
Element*
HTMLOptionsCollection::GetElementAt(uint32_t aIndex)
{
return ItemAsOption(aIndex);
}
HTMLOptionElement*
HTMLOptionsCollection::NamedGetter(const nsAString& aName, bool& aFound)
{
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;
}
NS_IMETHODIMP
HTMLOptionsCollection::NamedItem(const nsAString& aName,
nsIDOMNode** aReturn)
{
NS_IF_ADDREF(*aReturn = GetNamedItem(aName));
return NS_OK;
}
void
HTMLOptionsCollection::GetSupportedNames(unsigned aFlags,
nsTArray<nsString>& aNames)
{
if (!(aFlags & JSITER_HIDDEN)) {
return;
}
nsAutoTArray<nsIAtom*, 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) {
nsIAtom* name = val->GetAtomValue();
if (!atoms.Contains(name)) {
atoms.AppendElement(name);
}
}
if (content->HasID()) {
nsIAtom* 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]);
}
}
NS_IMETHODIMP
HTMLOptionsCollection::GetSelect(nsIDOMHTMLSelectElement** aReturn)
{
NS_IF_ADDREF(*aReturn = mSelect);
return NS_OK;
}
NS_IMETHODIMP
HTMLOptionsCollection::Add(nsIDOMHTMLOptionElement* aOption,
nsIVariant* aBefore)
{
if (!aOption) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsIDOMHTMLElement> elem = do_QueryInterface(aOption);
return mSelect->Add(elem, aBefore);
}
void
HTMLOptionsCollection::Add(const HTMLOptionOrOptGroupElement& aElement,
const Nullable<HTMLElementOrLong>& aBefore,
ErrorResult& aError)
{
mSelect->Add(aElement, aBefore, aError);
}
void
HTMLOptionsCollection::Remove(int32_t aIndex, ErrorResult& aError)
{
uint32_t len = 0;
mSelect->GetLength(&len);
if (aIndex < 0 || (uint32_t)aIndex >= len)
aIndex = 0;
aError = mSelect->Remove(aIndex);
}
NS_IMETHODIMP
HTMLOptionsCollection::Remove(int32_t aIndex)
{
ErrorResult rv;
Remove(aIndex, rv);
return rv.StealNSResult();
}
} // namespace dom
} // namespace mozilla
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