зеркало из https://github.com/mozilla/gecko-dev.git
376 строки
9.0 KiB
C++
376 строки
9.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/HTMLOptionsCollection.h"
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#include "HTMLOptGroupElement.h"
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#include "mozAutoDocUpdate.h"
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#include "mozilla/dom/BindingUtils.h"
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#include "mozilla/dom/Element.h"
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#include "mozilla/GenericSpecifiedValuesInlines.h"
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#include "mozilla/dom/HTMLFormSubmission.h"
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#include "mozilla/dom/HTMLOptionElement.h"
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#include "mozilla/dom/HTMLOptionsCollectionBinding.h"
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#include "mozilla/dom/HTMLSelectElement.h"
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#include "nsContentCreatorFunctions.h"
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#include "nsError.h"
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#include "nsGkAtoms.h"
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#include "nsIComboboxControlFrame.h"
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#include "nsIDocument.h"
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#include "nsIDOMHTMLOptGroupElement.h"
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#include "nsIFormControlFrame.h"
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#include "nsIForm.h"
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#include "nsIFormProcessor.h"
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#include "nsIListControlFrame.h"
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#include "nsLayoutUtils.h"
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#include "nsMappedAttributes.h"
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#include "nsRuleData.h"
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#include "nsServiceManagerUtils.h"
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#include "nsStyleConsts.h"
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#include "jsfriendapi.h"
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namespace mozilla {
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namespace dom {
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HTMLOptionsCollection::HTMLOptionsCollection(HTMLSelectElement* aSelect)
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{
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// Do not maintain a reference counted reference. When
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// the select goes away, it will let us know.
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mSelect = aSelect;
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}
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HTMLOptionsCollection::~HTMLOptionsCollection()
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{
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DropReference();
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}
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void
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HTMLOptionsCollection::DropReference()
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{
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// Drop our (non ref-counted) reference
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mSelect = nullptr;
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}
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nsresult
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HTMLOptionsCollection::GetOptionIndex(Element* aOption,
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int32_t aStartIndex,
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bool aForward,
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int32_t* aIndex)
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{
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// NOTE: aIndex shouldn't be set if the returned value isn't NS_OK.
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int32_t index;
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// Make the common case fast
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if (aStartIndex == 0 && aForward) {
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index = mElements.IndexOf(aOption);
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if (index == -1) {
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return NS_ERROR_FAILURE;
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}
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*aIndex = index;
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return NS_OK;
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}
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int32_t high = mElements.Length();
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int32_t step = aForward ? 1 : -1;
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for (index = aStartIndex; index < high && index > -1; index += step) {
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if (mElements[index] == aOption) {
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*aIndex = index;
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return NS_OK;
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}
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}
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return NS_ERROR_FAILURE;
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}
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NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(HTMLOptionsCollection, mElements)
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// nsISupports
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// QueryInterface implementation for HTMLOptionsCollection
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NS_INTERFACE_TABLE_HEAD(HTMLOptionsCollection)
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NS_WRAPPERCACHE_INTERFACE_TABLE_ENTRY
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NS_INTERFACE_TABLE(HTMLOptionsCollection,
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nsIHTMLCollection,
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nsIDOMHTMLOptionsCollection,
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nsIDOMHTMLCollection)
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NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(HTMLOptionsCollection)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF(HTMLOptionsCollection)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(HTMLOptionsCollection)
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JSObject*
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HTMLOptionsCollection::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return HTMLOptionsCollectionBinding::Wrap(aCx, this, aGivenProto);
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}
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NS_IMETHODIMP
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HTMLOptionsCollection::GetLength(uint32_t* aLength)
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{
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*aLength = mElements.Length();
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return NS_OK;
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}
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NS_IMETHODIMP
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HTMLOptionsCollection::SetLength(uint32_t aLength)
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{
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if (!mSelect) {
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return NS_ERROR_UNEXPECTED;
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}
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return mSelect->SetLength(aLength);
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}
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void
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HTMLOptionsCollection::IndexedSetter(uint32_t aIndex,
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HTMLOptionElement* aOption,
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ErrorResult& aError)
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{
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if (!mSelect) {
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return;
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}
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// if the new option is null, just remove this option. Note that it's safe
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// to pass a too-large aIndex in here.
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if (!aOption) {
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mSelect->Remove(aIndex);
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// We're done.
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return;
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}
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// Now we're going to be setting an option in our collection
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if (aIndex > mElements.Length()) {
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// Fill our array with blank options up to (but not including, since we're
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// about to change it) aIndex, for compat with other browsers.
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nsresult rv = SetLength(aIndex);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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aError.Throw(rv);
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return;
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}
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}
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NS_ASSERTION(aIndex <= mElements.Length(), "SetLength lied");
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if (aIndex == mElements.Length()) {
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mSelect->AppendChild(*aOption, aError);
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return;
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}
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// Find the option they're talking about and replace it
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// hold a strong reference to follow COM rules.
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RefPtr<HTMLOptionElement> refChild = ItemAsOption(aIndex);
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if (!refChild) {
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aError.Throw(NS_ERROR_UNEXPECTED);
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return;
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}
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nsCOMPtr<nsINode> parent = refChild->GetParent();
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if (!parent) {
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return;
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}
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parent->ReplaceChild(*aOption, *refChild, aError);
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}
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int32_t
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HTMLOptionsCollection::GetSelectedIndex(ErrorResult& aError)
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{
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if (!mSelect) {
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aError.Throw(NS_ERROR_UNEXPECTED);
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return 0;
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}
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int32_t selectedIndex;
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aError = mSelect->GetSelectedIndex(&selectedIndex);
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return selectedIndex;
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}
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NS_IMETHODIMP
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HTMLOptionsCollection::GetSelectedIndex(int32_t* aSelectedIndex)
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{
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ErrorResult rv;
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*aSelectedIndex = GetSelectedIndex(rv);
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return rv.StealNSResult();
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}
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void
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HTMLOptionsCollection::SetSelectedIndex(int32_t aSelectedIndex,
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ErrorResult& aError)
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{
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if (!mSelect) {
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aError.Throw(NS_ERROR_UNEXPECTED);
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return;
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}
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aError = mSelect->SetSelectedIndex(aSelectedIndex);
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}
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NS_IMETHODIMP
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HTMLOptionsCollection::SetSelectedIndex(int32_t aSelectedIndex)
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{
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ErrorResult rv;
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SetSelectedIndex(aSelectedIndex, rv);
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return rv.StealNSResult();
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}
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NS_IMETHODIMP
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HTMLOptionsCollection::Item(uint32_t aIndex, nsIDOMNode** aReturn)
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{
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nsISupports* item = GetElementAt(aIndex);
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if (!item) {
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*aReturn = nullptr;
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return NS_OK;
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}
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return CallQueryInterface(item, aReturn);
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}
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Element*
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HTMLOptionsCollection::GetElementAt(uint32_t aIndex)
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{
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return ItemAsOption(aIndex);
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}
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HTMLOptionElement*
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HTMLOptionsCollection::NamedGetter(const nsAString& aName, bool& aFound)
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{
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uint32_t count = mElements.Length();
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for (uint32_t i = 0; i < count; i++) {
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HTMLOptionElement* content = mElements.ElementAt(i);
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if (content &&
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(content->AttrValueIs(kNameSpaceID_None, nsGkAtoms::name, aName,
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eCaseMatters) ||
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content->AttrValueIs(kNameSpaceID_None, nsGkAtoms::id, aName,
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eCaseMatters))) {
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aFound = true;
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return content;
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}
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}
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aFound = false;
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return nullptr;
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}
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nsINode*
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HTMLOptionsCollection::GetParentObject()
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{
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return mSelect;
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}
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NS_IMETHODIMP
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HTMLOptionsCollection::NamedItem(const nsAString& aName,
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nsIDOMNode** aReturn)
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{
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NS_IF_ADDREF(*aReturn = GetNamedItem(aName));
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return NS_OK;
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}
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void
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HTMLOptionsCollection::GetSupportedNames(nsTArray<nsString>& aNames)
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{
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AutoTArray<nsIAtom*, 8> atoms;
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for (uint32_t i = 0; i < mElements.Length(); ++i) {
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HTMLOptionElement* content = mElements.ElementAt(i);
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if (content) {
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// Note: HasName means the names is exposed on the document,
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// which is false for options, so we don't check it here.
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const nsAttrValue* val = content->GetParsedAttr(nsGkAtoms::name);
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if (val && val->Type() == nsAttrValue::eAtom) {
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nsIAtom* name = val->GetAtomValue();
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if (!atoms.Contains(name)) {
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atoms.AppendElement(name);
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}
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}
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if (content->HasID()) {
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nsIAtom* id = content->GetID();
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if (!atoms.Contains(id)) {
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atoms.AppendElement(id);
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}
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}
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}
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}
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uint32_t atomsLen = atoms.Length();
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nsString* names = aNames.AppendElements(atomsLen);
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for (uint32_t i = 0; i < atomsLen; ++i) {
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atoms[i]->ToString(names[i]);
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}
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}
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NS_IMETHODIMP
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HTMLOptionsCollection::GetSelect(nsIDOMHTMLSelectElement** aReturn)
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{
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NS_IF_ADDREF(*aReturn = mSelect);
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return NS_OK;
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}
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NS_IMETHODIMP
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HTMLOptionsCollection::Add(nsIDOMHTMLOptionElement* aOption,
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nsIVariant* aBefore)
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{
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if (!aOption) {
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return NS_ERROR_INVALID_ARG;
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}
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if (!mSelect) {
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return NS_ERROR_NOT_INITIALIZED;
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}
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nsCOMPtr<nsIDOMHTMLElement> elem = do_QueryInterface(aOption);
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return mSelect->Add(elem, aBefore);
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}
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void
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HTMLOptionsCollection::Add(const HTMLOptionOrOptGroupElement& aElement,
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const Nullable<HTMLElementOrLong>& aBefore,
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ErrorResult& aError)
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{
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if (!mSelect) {
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aError.Throw(NS_ERROR_NOT_INITIALIZED);
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return;
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}
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mSelect->Add(aElement, aBefore, aError);
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}
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void
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HTMLOptionsCollection::Remove(int32_t aIndex, ErrorResult& aError)
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{
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if (!mSelect) {
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aError.Throw(NS_ERROR_UNEXPECTED);
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return;
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}
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uint32_t len = 0;
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mSelect->GetLength(&len);
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if (aIndex < 0 || (uint32_t)aIndex >= len)
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aIndex = 0;
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aError = mSelect->Remove(aIndex);
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}
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NS_IMETHODIMP
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HTMLOptionsCollection::Remove(int32_t aIndex)
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{
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ErrorResult rv;
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Remove(aIndex, rv);
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return rv.StealNSResult();
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}
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} // namespace dom
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} // namespace mozilla
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