dom/l10n/DocumentL10n.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim:set ts=2 sw=2 sts=2 et cindent: */
   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 #ifndef mozilla_dom_l10n_DocumentL10n_h
   8 #define mozilla_dom_l10n_DocumentL10n_h
   9
  10 #include "mozilla/dom/DOMLocalization.h"
  11
  12 class nsIContentSink;
  13
  14 namespace mozilla::dom {
  15
  16 class Document;
  17
  18 enum class DocumentL10nState {
  19   // State set when the DocumentL10n gets constructed.
  20   Constructed = 0,
  21
  22   // State set when the initial translation got triggered. This happens
  23   // if DocumentL10n was constructed during parsing of the document.
  24   //
  25   // If the DocumentL10n gets constructed later, we'll skip directly to
  26   // Ready state.
  27   InitialTranslationTriggered,
  28
  29   // State set the DocumentL10n has been fully initialized, potentially
  30   // with initial translation being completed.
  31   Ready,
  32 };
  33
  34 /**
  35  * This class maintains localization status of the document.
  36  *
  37  * The document will initialize it lazily when a link with a localization
  38  * resource is added to the document.
  39  *
  40  * Once initialized, DocumentL10n relays all API methods to an
  41  * instance of mozILocalization and maintains a single promise
  42  * which gets resolved the first time the document gets translated.
  43  */
  44 class DocumentL10n final : public DOMLocalization {
  45  public:
  46   NS_DECL_ISUPPORTS_INHERITED
  47   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DocumentL10n, DOMLocalization)
  48
  49   static RefPtr<DocumentL10n> Create(Document* aDocument, bool aSync);
  50
  51  protected:
  52   explicit DocumentL10n(Document* aDocument, bool aSync);
  53   virtual ~DocumentL10n() = default;
  54
  55   RefPtr<Document> mDocument;
  56   RefPtr<Promise> mReady;
  57   DocumentL10nState mState;
  58   nsCOMPtr<nsIContentSink> mContentSink;
  59
  60  public:
  61   virtual JSObject* WrapObject(JSContext* aCx,
  62                                JS::Handle<JSObject*> aGivenProto) override;
  63
  64   Promise* Ready();
  65
  66   void TriggerInitialTranslation();
  67   already_AddRefed<Promise> TranslateDocument(ErrorResult& aRv);
  68
  69   void InitialTranslationCompleted(bool aL10nCached);
  70
  71   Document* GetDocument() const { return mDocument; };
  72   void OnCreatePresShell();
  73
  74   void ConnectRoot(nsINode& aNode, bool aTranslate, ErrorResult& aRv);
  75
  76   DocumentL10nState GetState() { return mState; };
  77
  78   bool mBlockingLayout = false;
  79 };
  80
  81 }  // namespace mozilla::dom
  82
  83 #endif  // mozilla_dom_l10n_DocumentL10n_h