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 {
  17 namespace dom {
  18
  19 class DOMRect;
  20
  21 class PaintRequest final : public nsISupports, public nsWrapperCache {
  22  public:
  23   explicit PaintRequest(Event* aParent) : mParent(aParent) {}
  24
  25   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  26   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(PaintRequest)
  27
  28   virtual JSObject* WrapObject(JSContext* aCx,
  29                                JS::Handle<JSObject*> aGivenProto) override;
  30
  31   Event* GetParentObject() const { return mParent; }
  32
  33   already_AddRefed<DOMRect> ClientRect();
  34   void GetReason(nsAString& aResult) const { aResult.AssignLiteral("repaint"); }
  35
  36   void SetRequest(const nsRect& aRequest) { mRequest = aRequest; }
  37
  38  private:
  39   ~PaintRequest() = default;
  40
  41   RefPtr<Event> mParent;
  42   nsRect mRequest;
  43 };
  44
  45 class PaintRequestList final : public nsISupports, public nsWrapperCache {
  46  public:
  47   explicit PaintRequestList(Event* aParent) : mParent(aParent) {}
  48
  49   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  50   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(PaintRequestList)
  51
  52   virtual JSObject* WrapObject(JSContext* aCx,
  53                                JS::Handle<JSObject*> aGivenProto) override;
  54   nsISupports* GetParentObject() { return mParent; }
  55
  56   void Append(PaintRequest* aElement) { mArray.AppendElement(aElement); }
  57
  58   uint32_t Length() { return mArray.Length(); }
  59
  60   PaintRequest* Item(uint32_t aIndex) { return mArray.SafeElementAt(aIndex); }
  61   PaintRequest* IndexedGetter(uint32_t aIndex, bool& aFound) {
  62     aFound = aIndex < mArray.Length();
  63     if (!aFound) {
  64       return nullptr;
  65     }
  66     return mArray.ElementAt(aIndex);
  67   }
  68
  69  private:
  70   ~PaintRequestList() = default;
  71
  72   nsTArray<RefPtr<PaintRequest> > mArray;
  73   RefPtr<Event> mParent;
  74 };
  75
  76 }  // namespace dom
  77 }  // namespace mozilla
  78
  79 #endif  // mozilla_dom_PaintRequest_h_