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)
NS_IMPL_CYCLE_COLLECTING_RELEASE(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
WrapObject(JSContext * aCx,JS::Handle<JSObject * > aGivenProto)35 JSObject* nsMimeTypeArray::WrapObject(JSContext* aCx,
36 JS::Handle<JSObject*> aGivenProto) {
37 return MimeTypeArray_Binding::Wrap(aCx, this, aGivenProto);
38 }
39
GetParentObject() const40 nsPIDOMWindowInner* nsMimeTypeArray::GetParentObject() const {
41 MOZ_ASSERT(mWindow);
42 return mWindow;
43 }
44
IndexedGetter(uint32_t aIndex,bool & aFound)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
NamedGetter(const nsAString & aName,bool & aFound)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
GetSupportedNames(nsTArray<nsString> & retval)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 /* static */
ForceNoPlugins()83 bool nsMimeTypeArray::ForceNoPlugins() {
84 return StaticPrefs::pdfjs_disabled() ||
85 nsContentUtils::ShouldResistFingerprinting();
86 }
87
NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(nsMimeType,AddRef)88 NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(nsMimeType, AddRef)
89 NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(nsMimeType, Release)
90
91 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(nsMimeType, mPluginElement)
92
93 nsMimeType::nsMimeType(nsPluginElement* aPluginElement, const nsAString& aName)
94 : mPluginElement(aPluginElement), mName(aName) {
95 MOZ_ASSERT(aPluginElement);
96 }
97
98 nsMimeType::~nsMimeType() = default;
99
WrapObject(JSContext * aCx,JS::Handle<JSObject * > aGivenProto)100 JSObject* nsMimeType::WrapObject(JSContext* aCx,
101 JS::Handle<JSObject*> aGivenProto) {
102 return MimeType_Binding::Wrap(aCx, this, aGivenProto);
103 }
104