mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-29 21:25:35 +00:00
416 lines
12 KiB
C++
416 lines
12 KiB
C++
/* -*- 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/HTMLFormControlsCollection.h"
|
|
|
|
#include "mozFlushType.h"
|
|
#include "mozilla/dom/BindingUtils.h"
|
|
#include "mozilla/dom/Element.h"
|
|
#include "mozilla/dom/HTMLFormControlsCollectionBinding.h"
|
|
#include "mozilla/dom/HTMLFormElement.h"
|
|
#include "nsGenericHTMLElement.h" // nsGenericHTMLFormElement
|
|
#include "nsIDocument.h"
|
|
#include "nsIDOMNode.h"
|
|
#include "nsIDOMNodeList.h"
|
|
#include "nsIFormControl.h"
|
|
#include "RadioNodeList.h"
|
|
#include "jsfriendapi.h"
|
|
|
|
namespace mozilla {
|
|
namespace dom {
|
|
|
|
/* static */ bool
|
|
HTMLFormControlsCollection::ShouldBeInElements(nsIFormControl* aFormControl)
|
|
{
|
|
// For backwards compatibility (with 4.x and IE) we must not add
|
|
// <input type=image> elements to the list of form controls in a
|
|
// form.
|
|
|
|
switch (aFormControl->GetType()) {
|
|
case NS_FORM_BUTTON_BUTTON :
|
|
case NS_FORM_BUTTON_RESET :
|
|
case NS_FORM_BUTTON_SUBMIT :
|
|
case NS_FORM_INPUT_BUTTON :
|
|
case NS_FORM_INPUT_CHECKBOX :
|
|
case NS_FORM_INPUT_COLOR :
|
|
case NS_FORM_INPUT_EMAIL :
|
|
case NS_FORM_INPUT_FILE :
|
|
case NS_FORM_INPUT_HIDDEN :
|
|
case NS_FORM_INPUT_RESET :
|
|
case NS_FORM_INPUT_PASSWORD :
|
|
case NS_FORM_INPUT_RADIO :
|
|
case NS_FORM_INPUT_SEARCH :
|
|
case NS_FORM_INPUT_SUBMIT :
|
|
case NS_FORM_INPUT_TEXT :
|
|
case NS_FORM_INPUT_TEL :
|
|
case NS_FORM_INPUT_URL :
|
|
case NS_FORM_INPUT_NUMBER :
|
|
case NS_FORM_INPUT_RANGE :
|
|
case NS_FORM_INPUT_DATE :
|
|
case NS_FORM_INPUT_TIME :
|
|
case NS_FORM_INPUT_MONTH :
|
|
case NS_FORM_INPUT_WEEK :
|
|
case NS_FORM_SELECT :
|
|
case NS_FORM_TEXTAREA :
|
|
case NS_FORM_FIELDSET :
|
|
case NS_FORM_OBJECT :
|
|
case NS_FORM_OUTPUT :
|
|
return true;
|
|
}
|
|
|
|
// These form control types are not supposed to end up in the
|
|
// form.elements array
|
|
//
|
|
// NS_FORM_INPUT_IMAGE
|
|
//
|
|
// XXXbz maybe we should just check for that type here instead of the big
|
|
// switch?
|
|
|
|
return false;
|
|
}
|
|
|
|
HTMLFormControlsCollection::HTMLFormControlsCollection(HTMLFormElement* aForm)
|
|
: mForm(aForm)
|
|
// Initialize the elements list to have an initial capacity
|
|
// of 8 to reduce allocations on small forms.
|
|
, mElements(8)
|
|
, mNameLookupTable(HTMLFormElement::FORM_CONTROL_LIST_HASHTABLE_LENGTH)
|
|
{
|
|
}
|
|
|
|
HTMLFormControlsCollection::~HTMLFormControlsCollection()
|
|
{
|
|
mForm = nullptr;
|
|
Clear();
|
|
}
|
|
|
|
void
|
|
HTMLFormControlsCollection::DropFormReference()
|
|
{
|
|
mForm = nullptr;
|
|
Clear();
|
|
}
|
|
|
|
void
|
|
HTMLFormControlsCollection::Clear()
|
|
{
|
|
// Null out childrens' pointer to me. No refcounting here
|
|
for (int32_t i = mElements.Length() - 1; i >= 0; i--) {
|
|
mElements[i]->ClearForm(false);
|
|
}
|
|
mElements.Clear();
|
|
|
|
for (int32_t i = mNotInElements.Length() - 1; i >= 0; i--) {
|
|
mNotInElements[i]->ClearForm(false);
|
|
}
|
|
mNotInElements.Clear();
|
|
|
|
mNameLookupTable.Clear();
|
|
}
|
|
|
|
void
|
|
HTMLFormControlsCollection::FlushPendingNotifications()
|
|
{
|
|
if (mForm) {
|
|
nsIDocument* doc = mForm->GetUncomposedDoc();
|
|
if (doc) {
|
|
doc->FlushPendingNotifications(Flush_Content);
|
|
}
|
|
}
|
|
}
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_CLASS(HTMLFormControlsCollection)
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(HTMLFormControlsCollection)
|
|
// Note: We intentionally don't set tmp->mForm to nullptr here, since doing
|
|
// so may result in crashes because of inconsistent null-checking after the
|
|
// object gets unlinked.
|
|
tmp->Clear();
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(HTMLFormControlsCollection)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mNameLookupTable)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
|
|
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(HTMLFormControlsCollection)
|
|
NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
|
|
NS_IMPL_CYCLE_COLLECTION_TRACE_END
|
|
|
|
// XPConnect interface list for HTMLFormControlsCollection
|
|
NS_INTERFACE_TABLE_HEAD(HTMLFormControlsCollection)
|
|
NS_WRAPPERCACHE_INTERFACE_TABLE_ENTRY
|
|
NS_INTERFACE_TABLE(HTMLFormControlsCollection,
|
|
nsIHTMLCollection,
|
|
nsIDOMHTMLCollection)
|
|
NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(HTMLFormControlsCollection)
|
|
NS_INTERFACE_MAP_END
|
|
|
|
|
|
NS_IMPL_CYCLE_COLLECTING_ADDREF(HTMLFormControlsCollection)
|
|
NS_IMPL_CYCLE_COLLECTING_RELEASE(HTMLFormControlsCollection)
|
|
|
|
|
|
// nsIDOMHTMLCollection interface
|
|
|
|
NS_IMETHODIMP
|
|
HTMLFormControlsCollection::GetLength(uint32_t* aLength)
|
|
{
|
|
FlushPendingNotifications();
|
|
*aLength = mElements.Length();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
HTMLFormControlsCollection::Item(uint32_t aIndex, nsIDOMNode** aReturn)
|
|
{
|
|
nsISupports* item = GetElementAt(aIndex);
|
|
if (!item) {
|
|
*aReturn = nullptr;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
return CallQueryInterface(item, aReturn);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
HTMLFormControlsCollection::NamedItem(const nsAString& aName,
|
|
nsIDOMNode** aReturn)
|
|
{
|
|
FlushPendingNotifications();
|
|
|
|
*aReturn = nullptr;
|
|
|
|
nsCOMPtr<nsISupports> supports;
|
|
|
|
if (!mNameLookupTable.Get(aName, getter_AddRefs(supports))) {
|
|
// key not found
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!supports) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// We found something, check if it's a node
|
|
CallQueryInterface(supports, aReturn);
|
|
if (*aReturn) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// If not, we check if it's a node list.
|
|
nsCOMPtr<nsIDOMNodeList> nodeList = do_QueryInterface(supports);
|
|
NS_ASSERTION(nodeList, "Huh, what's going one here?");
|
|
if (!nodeList) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// And since we're only asking for one node here, we return the first
|
|
// one from the list.
|
|
return nodeList->Item(0, aReturn);
|
|
}
|
|
|
|
nsISupports*
|
|
HTMLFormControlsCollection::NamedItemInternal(const nsAString& aName,
|
|
bool aFlushContent)
|
|
{
|
|
if (aFlushContent) {
|
|
FlushPendingNotifications();
|
|
}
|
|
|
|
return mNameLookupTable.GetWeak(aName);
|
|
}
|
|
|
|
nsresult
|
|
HTMLFormControlsCollection::AddElementToTable(nsGenericHTMLFormElement* aChild,
|
|
const nsAString& aName)
|
|
{
|
|
if (!ShouldBeInElements(aChild)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
return mForm->AddElementToTableInternal(mNameLookupTable, aChild, aName);
|
|
}
|
|
|
|
nsresult
|
|
HTMLFormControlsCollection::IndexOfControl(nsIFormControl* aControl,
|
|
int32_t* aIndex)
|
|
{
|
|
// Note -- not a DOM method; callers should handle flushing themselves
|
|
|
|
NS_ENSURE_ARG_POINTER(aIndex);
|
|
|
|
*aIndex = mElements.IndexOf(aControl);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
HTMLFormControlsCollection::RemoveElementFromTable(
|
|
nsGenericHTMLFormElement* aChild, const nsAString& aName)
|
|
{
|
|
if (!ShouldBeInElements(aChild)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
return mForm->RemoveElementFromTableInternal(mNameLookupTable, aChild, aName);
|
|
}
|
|
|
|
nsresult
|
|
HTMLFormControlsCollection::GetSortedControls(
|
|
nsTArray<nsGenericHTMLFormElement*>& aControls) const
|
|
{
|
|
#ifdef DEBUG
|
|
HTMLFormElement::AssertDocumentOrder(mElements, mForm);
|
|
HTMLFormElement::AssertDocumentOrder(mNotInElements, mForm);
|
|
#endif
|
|
|
|
aControls.Clear();
|
|
|
|
// Merge the elements list and the not in elements list. Both lists are
|
|
// already sorted.
|
|
uint32_t elementsLen = mElements.Length();
|
|
uint32_t notInElementsLen = mNotInElements.Length();
|
|
aControls.SetCapacity(elementsLen + notInElementsLen);
|
|
|
|
uint32_t elementsIdx = 0;
|
|
uint32_t notInElementsIdx = 0;
|
|
|
|
while (elementsIdx < elementsLen || notInElementsIdx < notInElementsLen) {
|
|
// Check whether we're done with mElements
|
|
if (elementsIdx == elementsLen) {
|
|
NS_ASSERTION(notInElementsIdx < notInElementsLen,
|
|
"Should have remaining not-in-elements");
|
|
// Append the remaining mNotInElements elements
|
|
if (!aControls.AppendElements(mNotInElements.Elements() +
|
|
notInElementsIdx,
|
|
notInElementsLen -
|
|
notInElementsIdx)) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
break;
|
|
}
|
|
// Check whether we're done with mNotInElements
|
|
if (notInElementsIdx == notInElementsLen) {
|
|
NS_ASSERTION(elementsIdx < elementsLen,
|
|
"Should have remaining in-elements");
|
|
// Append the remaining mElements elements
|
|
if (!aControls.AppendElements(mElements.Elements() +
|
|
elementsIdx,
|
|
elementsLen -
|
|
elementsIdx)) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
break;
|
|
}
|
|
// Both lists have elements left.
|
|
NS_ASSERTION(mElements[elementsIdx] &&
|
|
mNotInElements[notInElementsIdx],
|
|
"Should have remaining elements");
|
|
// Determine which of the two elements should be ordered
|
|
// first and add it to the end of the list.
|
|
nsGenericHTMLFormElement* elementToAdd;
|
|
if (HTMLFormElement::CompareFormControlPosition(
|
|
mElements[elementsIdx], mNotInElements[notInElementsIdx], mForm) < 0) {
|
|
elementToAdd = mElements[elementsIdx];
|
|
++elementsIdx;
|
|
} else {
|
|
elementToAdd = mNotInElements[notInElementsIdx];
|
|
++notInElementsIdx;
|
|
}
|
|
// Add the first element to the list.
|
|
if (!aControls.AppendElement(elementToAdd)) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
|
|
NS_ASSERTION(aControls.Length() == elementsLen + notInElementsLen,
|
|
"Not all form controls were added to the sorted list");
|
|
#ifdef DEBUG
|
|
HTMLFormElement::AssertDocumentOrder(aControls, mForm);
|
|
#endif
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
Element*
|
|
HTMLFormControlsCollection::GetElementAt(uint32_t aIndex)
|
|
{
|
|
FlushPendingNotifications();
|
|
|
|
return mElements.SafeElementAt(aIndex, nullptr);
|
|
}
|
|
|
|
/* virtual */ nsINode*
|
|
HTMLFormControlsCollection::GetParentObject()
|
|
{
|
|
return mForm;
|
|
}
|
|
|
|
/* virtual */ Element*
|
|
HTMLFormControlsCollection::GetFirstNamedElement(const nsAString& aName, bool& aFound)
|
|
{
|
|
Nullable<OwningRadioNodeListOrElement> maybeResult;
|
|
NamedGetter(aName, aFound, maybeResult);
|
|
if (!aFound) {
|
|
return nullptr;
|
|
}
|
|
MOZ_ASSERT(!maybeResult.IsNull());
|
|
const OwningRadioNodeListOrElement& result = maybeResult.Value();
|
|
if (result.IsElement()) {
|
|
return result.GetAsElement().get();
|
|
}
|
|
if (result.IsRadioNodeList()) {
|
|
RadioNodeList& nodelist = result.GetAsRadioNodeList();
|
|
return nodelist.Item(0)->AsElement();
|
|
}
|
|
MOZ_ASSERT_UNREACHABLE("Should only have Elements and NodeLists here.");
|
|
return nullptr;
|
|
}
|
|
|
|
void
|
|
HTMLFormControlsCollection::NamedGetter(const nsAString& aName,
|
|
bool& aFound,
|
|
Nullable<OwningRadioNodeListOrElement>& aResult)
|
|
{
|
|
nsISupports* item = NamedItemInternal(aName, true);
|
|
if (!item) {
|
|
aFound = false;
|
|
return;
|
|
}
|
|
aFound = true;
|
|
if (nsCOMPtr<Element> element = do_QueryInterface(item)) {
|
|
aResult.SetValue().SetAsElement() = element;
|
|
return;
|
|
}
|
|
if (nsCOMPtr<RadioNodeList> nodelist = do_QueryInterface(item)) {
|
|
aResult.SetValue().SetAsRadioNodeList() = nodelist;
|
|
return;
|
|
}
|
|
MOZ_ASSERT_UNREACHABLE("Should only have Elements and NodeLists here.");
|
|
}
|
|
|
|
void
|
|
HTMLFormControlsCollection::GetSupportedNames(nsTArray<nsString>& aNames)
|
|
{
|
|
FlushPendingNotifications();
|
|
// Just enumerate mNameLookupTable. This won't guarantee order, but
|
|
// that's OK, because the HTML5 spec doesn't define an order for
|
|
// this enumeration.
|
|
for (auto iter = mNameLookupTable.Iter(); !iter.Done(); iter.Next()) {
|
|
aNames.AppendElement(iter.Key());
|
|
}
|
|
}
|
|
|
|
/* virtual */ JSObject*
|
|
HTMLFormControlsCollection::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
|
|
{
|
|
return HTMLFormControlsCollectionBinding::Wrap(aCx, this, aGivenProto);
|
|
}
|
|
|
|
} // namespace dom
|
|
} // namespace mozilla
|