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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 */
#ifndef nsMimeTypeArray_h___
#define nsMimeTypeArray_h___
#include "nsWrapperCache.h"
#include "nsCOMPtr.h"
#include "nsPIDOMWindow.h"
#include "nsTArray.h"
#include "mozilla/dom/BindingDeclarations.h"
class nsMimeType;
class nsPluginElement;
* Array class backing HTML's navigator.mimeTypes. This always holds
* references to the hard-coded set of PDF MIME types defined by HTML but it
* only consults them if "pdfjs.disabled" is false. There is never more
* than one of these per DOM window.
class nsMimeTypeArray final : public nsISupports, public nsWrapperCache {
nsMimeTypeArray(nsPIDOMWindowInner* aWindow,
const mozilla::Array<RefPtr<nsMimeType>, 2>& aMimeTypes);
nsPIDOMWindowInner* GetParentObject() const;
virtual JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
// MimeTypeArray WebIDL methods
uint32_t Length() { return ForceNoPlugins() ? 0 : ArrayLength(mMimeTypes); }
nsMimeType* Item(uint32_t aIndex) {
bool unused;
return IndexedGetter(aIndex, unused);
nsMimeType* NamedItem(const nsAString& aName) {
bool unused;
return NamedGetter(aName, unused);
nsMimeType* IndexedGetter(uint32_t index, bool& found);
nsMimeType* NamedGetter(const nsAString& name, bool& found);
void GetSupportedNames(nsTArray<nsString>& retval);
virtual ~nsMimeTypeArray();
bool ForceNoPlugins();
nsCOMPtr<nsPIDOMWindowInner> mWindow;
mozilla::Array<RefPtr<nsMimeType>, 2> mMimeTypes;
* Mime type class backing entries in HTML's navigator.mimeTypes array. There
* is a fixed set of these, as defined by HTML.
class nsMimeType final : public nsWrapperCache {
nsMimeType(nsPluginElement* aPluginElement, const nsAString& aName);
nsPluginElement* GetParentObject() const { return mPluginElement; }
virtual JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
// MimeType WebIDL methods
void GetDescription(mozilla::dom::DOMString& retval) const {
already_AddRefed<nsPluginElement> EnabledPlugin() const {
return do_AddRef(mPluginElement);
void GetSuffixes(mozilla::dom::DOMString& retval) const {
void GetType(nsString& retval) const { retval = mName; }
const nsString& Name() const { return mName; }
virtual ~nsMimeType();
static constexpr nsLiteralString kMimeDescription =
u"Portable Document Format"_ns;
static constexpr nsLiteralString kMimeSuffix = u"pdf"_ns;
// Note that this creates an explicit reference cycle:
// nsMimeType -> nsPluginElement -> nsPluginArray ->
// nsMimeTypeArray -> nsMimeType
// We rely on the cycle collector to break this cycle.
RefPtr<nsPluginElement> mPluginElement;
nsString mName;
#endif /* nsMimeTypeArray_h___ */