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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/. */
#ifndef mozilla_dom_HTMLOptionsCollection_h
#define mozilla_dom_HTMLOptionsCollection_h
#include "mozilla/Attributes.h"
#include "nsIHTMLCollection.h"
#include "nsIDOMHTMLOptionsCollection.h"
#include "nsWrapperCache.h"
#include "mozilla/dom/HTMLOptionElement.h"
#include "mozilla/ErrorResult.h"
#include "nsCOMPtr.h"
#include "nsError.h"
#include "nsGenericHTMLElement.h"
#include "nsTArray.h"
class nsIDOMHTMLOptionElement;
namespace mozilla {
namespace dom {
class HTMLElementOrLong;
class HTMLOptionElementOrHTMLOptGroupElement;
class HTMLSelectElement;
/**
* The collection of options in the select (what you get back when you do
* select.options in DOM)
*/
class HTMLOptionsCollection final : public nsIHTMLCollection
, public nsIDOMHTMLOptionsCollection
, public nsWrapperCache
{
typedef HTMLOptionElementOrHTMLOptGroupElement HTMLOptionOrOptGroupElement;
public:
explicit HTMLOptionsCollection(HTMLSelectElement* aSelect);
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
// nsWrapperCache
using nsWrapperCache::GetWrapperPreserveColor;
using nsWrapperCache::GetWrapper;
virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
protected:
virtual ~HTMLOptionsCollection();
virtual JSObject* GetWrapperPreserveColorInternal() override
{
return nsWrapperCache::GetWrapperPreserveColor();
}
public:
// nsIDOMHTMLOptionsCollection interface
NS_DECL_NSIDOMHTMLOPTIONSCOLLECTION
// nsIDOMHTMLCollection interface, all its methods are defined in
// nsIDOMHTMLOptionsCollection
virtual Element* GetElementAt(uint32_t aIndex) override;
virtual nsINode* GetParentObject() override;
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_AMBIGUOUS(HTMLOptionsCollection,
nsIHTMLCollection)
// Helpers for HTMLSelectElement
/**
* Insert an option
* @param aOption the option to insert
* @param aIndex the index to insert at
*/
void InsertOptionAt(mozilla::dom::HTMLOptionElement* aOption, uint32_t aIndex)
{
mElements.InsertElementAt(aIndex, aOption);
}
/**
* Remove an option
* @param aIndex the index of the option to remove
*/
void RemoveOptionAt(uint32_t aIndex)
{
mElements.RemoveElementAt(aIndex);
}
/**
* Get the option at the index
* @param aIndex the index
* @param aReturn the option returned [OUT]
*/
mozilla::dom::HTMLOptionElement* ItemAsOption(uint32_t aIndex)
{
return mElements.SafeElementAt(aIndex, nullptr);
}
/**
* Clears out all options
*/
void Clear()
{
mElements.Clear();
}
/**
* Append an option to end of array
*/
void AppendOption(mozilla::dom::HTMLOptionElement* aOption)
{
mElements.AppendElement(aOption);
}
/**
* Drop the reference to the select. Called during select destruction.
*/
void DropReference();
/**
* Finds the index of a given option element.
* If the option isn't part of the collection, return NS_ERROR_FAILURE
* without setting aIndex.
*
* @param aOption the option to get the index of
* @param aStartIndex the index to start looking at
* @param aForward TRUE to look forward, FALSE to look backward
* @return the option index
*/
nsresult GetOptionIndex(Element* aOption,
int32_t aStartIndex, bool aForward,
int32_t* aIndex);
HTMLOptionElement* GetNamedItem(const nsAString& aName)
{
bool dummy;
return NamedGetter(aName, dummy);
}
HTMLOptionElement* NamedGetter(const nsAString& aName, bool& aFound);
virtual Element*
GetFirstNamedElement(const nsAString& aName, bool& aFound) override
{
return NamedGetter(aName, aFound);
}
void Add(const HTMLOptionOrOptGroupElement& aElement,
const Nullable<HTMLElementOrLong>& aBefore,
ErrorResult& aError);
void Remove(int32_t aIndex, ErrorResult& aError);
int32_t GetSelectedIndex(ErrorResult& aError);
void SetSelectedIndex(int32_t aSelectedIndex, ErrorResult& aError);
void IndexedSetter(uint32_t aIndex, nsIDOMHTMLOptionElement* aOption,
ErrorResult& aError)
{
aError = SetOption(aIndex, aOption);
}
virtual void GetSupportedNames(nsTArray<nsString>& aNames) override;
private:
/** The list of options (holds strong references). This is infallible, so
* various members such as InsertOptionAt are also infallible. */
nsTArray<RefPtr<mozilla::dom::HTMLOptionElement> > mElements;
/** The select element that contains this array */
HTMLSelectElement* mSelect;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_HTMLOptionsCollection_h
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