dom/events/PaintRequest.h

   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 #ifndef mozilla_dom_PaintRequest_h_
   8 #define mozilla_dom_PaintRequest_h_
   9
  10 #include "nsPresContext.h"
  11 #include "mozilla/Attributes.h"
  12 #include "mozilla/RefPtr.h"
  13 #include "mozilla/dom/Event.h"
  14 #include "nsWrapperCache.h"
  15
  16 namespace mozilla::dom {
  17
  18 class DOMRect;
  19
  20 class PaintRequest final : public nsISupports, public nsWrapperCache {
  21  public:
  22   explicit PaintRequest(Event* aParent) : mParent(aParent) {}
  23
  24   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  25   NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(PaintRequest)
  26
  27   virtual JSObject* WrapObject(JSContext* aCx,
  28                                JS::Handle<JSObject*> aGivenProto) override;
  29
  30   Event* GetParentObject() const { return mParent; }
  31
  32   already_AddRefed<DOMRect> ClientRect();
  33   void GetReason(nsAString& aResult) const { aResult.AssignLiteral("repaint"); }
  34
  35   void SetRequest(const nsRect& aRequest) { mRequest = aRequest; }
  36
  37  private:
  38   ~PaintRequest() = default;
  39
  40   RefPtr<Event> mParent;
  41   nsRect mRequest;
  42 };
  43
  44 class PaintRequestList final : public nsISupports, public nsWrapperCache {
  45  public:
  46   explicit PaintRequestList(Event* aParent) : mParent(aParent) {}
  47
  48   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  49   NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(PaintRequestList)
  50
  51   virtual JSObject* WrapObject(JSContext* aCx,
  52                                JS::Handle<JSObject*> aGivenProto) override;
  53   nsISupports* GetParentObject() { return mParent; }
  54
  55   void Append(PaintRequest* aElement) { mArray.AppendElement(aElement); }
  56
  57   uint32_t Length() { return mArray.Length(); }
  58
  59   PaintRequest* Item(uint32_t aIndex) { return mArray.SafeElementAt(aIndex); }
  60   PaintRequest* IndexedGetter(uint32_t aIndex, bool& aFound) {
  61     aFound = aIndex < mArray.Length();
  62     if (!aFound) {
  63       return nullptr;
  64     }
  65     return mArray.ElementAt(aIndex);
  66   }
  67
  68  private:
  69   ~PaintRequestList() = default;
  70
  71   nsTArray<RefPtr<PaintRequest> > mArray;
  72   RefPtr<Event> mParent;
  73 };
  74
  75 }  // namespace mozilla::dom
  76
  77 #endif  // mozilla_dom_PaintRequest_h_