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-rw-r--r--dom/html/HTMLOptionsCollection.cpp191
1 files changed, 191 insertions, 0 deletions
diff --git a/dom/html/HTMLOptionsCollection.cpp b/dom/html/HTMLOptionsCollection.cpp
new file mode 100644
index 0000000000..be483641d9
--- /dev/null
+++ b/dom/html/HTMLOptionsCollection.cpp
@@ -0,0 +1,191 @@
+/* -*- 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 "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);
+ ENSURE_SUCCESS_VOID(aError);
+ }
+
+ 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) {
+ 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