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-rw-r--r--dom/html/HTMLOptionsCollection.cpp375
1 files changed, 375 insertions, 0 deletions
diff --git a/dom/html/HTMLOptionsCollection.cpp b/dom/html/HTMLOptionsCollection.cpp
new file mode 100644
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--- /dev/null
+++ b/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/HTMLFormSubmission.h"
+#include "mozilla/dom/HTMLOptionElement.h"
+#include "mozilla/dom/HTMLOptionsCollectionBinding.h"
+#include "mozilla/dom/HTMLSelectElement.h"
+#include "nsContentCreatorFunctions.h"
+#include "nsError.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)
+{
+ // Do not maintain a reference counted reference. When
+ // the select goes away, it will let us know.
+ mSelect = aSelect;
+}
+
+HTMLOptionsCollection::~HTMLOptionsCollection()
+{
+ DropReference();
+}
+
+void
+HTMLOptionsCollection::DropReference()
+{
+ // Drop our (non ref-counted) reference
+ mSelect = nullptr;
+}
+
+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)
+
+// 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)
+{
+ if (!mSelect) {
+ return NS_ERROR_UNEXPECTED;
+ }
+
+ return mSelect->SetLength(aLength);
+}
+
+NS_IMETHODIMP
+HTMLOptionsCollection::SetOption(uint32_t aIndex,
+ nsIDOMHTMLOptionElement* aOption)
+{
+ if (!mSelect) {
+ return NS_OK;
+ }
+
+ // 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)
+{
+ if (!mSelect) {
+ aError.Throw(NS_ERROR_UNEXPECTED);
+ return 0;
+ }
+
+ 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)
+{
+ if (!mSelect) {
+ aError.Throw(NS_ERROR_UNEXPECTED);
+ return;
+ }
+
+ 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(nsTArray<nsString>& aNames)
+{
+ AutoTArray<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;
+ }
+
+ if (!mSelect) {
+ return NS_ERROR_NOT_INITIALIZED;
+ }
+
+ nsCOMPtr<nsIDOMHTMLElement> elem = do_QueryInterface(aOption);
+ return mSelect->Add(elem, aBefore);
+}
+
+void
+HTMLOptionsCollection::Add(const HTMLOptionOrOptGroupElement& aElement,
+ const Nullable<HTMLElementOrLong>& aBefore,
+ ErrorResult& aError)
+{
+ if (!mSelect) {
+ aError.Throw(NS_ERROR_NOT_INITIALIZED);
+ return;
+ }
+
+ mSelect->Add(aElement, aBefore, aError);
+}
+
+void
+HTMLOptionsCollection::Remove(int32_t aIndex, ErrorResult& aError)
+{
+ if (!mSelect) {
+ aError.Throw(NS_ERROR_UNEXPECTED);
+ return;
+ }
+
+ 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