dom/base/nsMimeTypeArray.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "nsMimeTypeArray.h"
   8
   9 #include "mozilla/dom/MimeTypeArrayBinding.h"
  10 #include "mozilla/dom/MimeTypeBinding.h"
  11 #include "nsPluginArray.h"
  12 #include "mozilla/StaticPrefs_pdfjs.h"
  13 #include "nsContentUtils.h"
  14
  15 using namespace mozilla;
  16 using namespace mozilla::dom;
  17
  18 NS_IMPL_CYCLE_COLLECTING_ADDREF(nsMimeTypeArray)
  19 NS_IMPL_CYCLE_COLLECTING_RELEASE(nsMimeTypeArray)
  20 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsMimeTypeArray)
  21   NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
  22   NS_INTERFACE_MAP_ENTRY(nsISupports)
  23 NS_INTERFACE_MAP_END
  24
  25 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(nsMimeTypeArray, mWindow, mMimeTypes[0],
  26                                       mMimeTypes[1])
  27
  28 nsMimeTypeArray::nsMimeTypeArray(
  29     nsPIDOMWindowInner* aWindow,
  30     const mozilla::Array<RefPtr<nsMimeType>, 2>& aMimeTypes)
  31     : mWindow(aWindow), mMimeTypes(aMimeTypes) {}
  32
  33 nsMimeTypeArray::~nsMimeTypeArray() = default;
  34
  35 JSObject* nsMimeTypeArray::WrapObject(JSContext* aCx,
  36                                       JS::Handle<JSObject*> aGivenProto) {
  37   return MimeTypeArray_Binding::Wrap(aCx, this, aGivenProto);
  38 }
  39
  40 nsPIDOMWindowInner* nsMimeTypeArray::GetParentObject() const {
  41   MOZ_ASSERT(mWindow);
  42   return mWindow;
  43 }
  44
  45 nsMimeType* nsMimeTypeArray::IndexedGetter(uint32_t aIndex, bool& aFound) {
  46   if (!ForceNoPlugins() && aIndex < ArrayLength(mMimeTypes)) {
  47     aFound = true;
  48     return mMimeTypes[aIndex];
  49   }
  50
  51   aFound = false;
  52   return nullptr;
  53 }
  54
  55 nsMimeType* nsMimeTypeArray::NamedGetter(const nsAString& aName, bool& aFound) {
  56   if (ForceNoPlugins()) {
  57     aFound = false;
  58     return nullptr;
  59   }
  60
  61   for (const auto& mimeType : mMimeTypes) {
  62     if (mimeType->Name().Equals(aName)) {
  63       aFound = true;
  64       return mimeType;
  65     }
  66   }
  67
  68   aFound = false;
  69   return nullptr;
  70 }
  71
  72 void nsMimeTypeArray::GetSupportedNames(nsTArray<nsString>& retval) {
  73   if (ForceNoPlugins()) {
  74     return;
  75   }
  76
  77   for (auto& mimeType : mMimeTypes) {
  78     retval.AppendElement(mimeType->Name());
  79   }
  80 }
  81
  82 bool nsMimeTypeArray::ForceNoPlugins() { return StaticPrefs::pdfjs_disabled(); }
  83
  84 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(nsMimeType, mPluginElement)
  85
  86 nsMimeType::nsMimeType(nsPluginElement* aPluginElement, const nsAString& aName)
  87     : mPluginElement(aPluginElement), mName(aName) {
  88   MOZ_ASSERT(aPluginElement);
  89 }
  90
  91 nsMimeType::~nsMimeType() = default;
  92
  93 JSObject* nsMimeType::WrapObject(JSContext* aCx,
  94                                  JS::Handle<JSObject*> aGivenProto) {
  95   return MimeType_Binding::Wrap(aCx, this, aGivenProto);
  96 }
  97
  98 already_AddRefed<nsPluginElement> nsMimeType::EnabledPlugin() const {
  99   return do_AddRef(mPluginElement);
 100 }