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comparison: layout/xul/tree/nsTreeImageListener.h
layout/xul/tree/nsTreeImageListener.h
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- 6474c204b198
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #ifndef nsTreeImageListener_h__ | |
| 7 #define nsTreeImageListener_h__ | |
| 8 | |
| 9 #include "nsString.h" | |
| 10 #include "nsCOMPtr.h" | |
| 11 #include "nsITreeColumns.h" | |
| 12 #include "nsTreeBodyFrame.h" | |
| 13 #include "mozilla/Attributes.h" | |
| 14 | |
| 15 // This class handles image load observation. | |
| 16 class nsTreeImageListener MOZ_FINAL : public imgINotificationObserver | |
| 17 { | |
| 18 public: | |
| 19 nsTreeImageListener(nsTreeBodyFrame *aTreeFrame); | |
| 20 ~nsTreeImageListener(); | |
| 21 | |
| 22 NS_DECL_ISUPPORTS | |
| 23 NS_DECL_IMGINOTIFICATIONOBSERVER | |
| 24 | |
| 25 NS_IMETHOD ClearFrame(); | |
| 26 | |
| 27 friend class nsTreeBodyFrame; | |
| 28 | |
| 29 protected: | |
| 30 void UnsuppressInvalidation() { mInvalidationSuppressed = false; } | |
| 31 void Invalidate(); | |
| 32 void AddCell(int32_t aIndex, nsITreeColumn* aCol); | |
| 33 | |
| 34 private: | |
| 35 nsTreeBodyFrame* mTreeFrame; | |
| 36 | |
| 37 // A guard that prevents us from recursive painting. | |
| 38 bool mInvalidationSuppressed; | |
| 39 | |
| 40 class InvalidationArea { | |
| 41 public: | |
| 42 InvalidationArea(nsITreeColumn* aCol); | |
| 43 ~InvalidationArea() { delete mNext; } | |
| 44 | |
| 45 friend class nsTreeImageListener; | |
| 46 | |
| 47 protected: | |
| 48 void AddRow(int32_t aIndex); | |
| 49 nsITreeColumn* GetCol() { return mCol.get(); } | |
| 50 int32_t GetMin() { return mMin; } | |
| 51 int32_t GetMax() { return mMax; } | |
| 52 InvalidationArea* GetNext() { return mNext; } | |
| 53 void SetNext(InvalidationArea* aNext) { mNext = aNext; } | |
| 54 | |
| 55 private: | |
| 56 nsCOMPtr<nsITreeColumn> mCol; | |
| 57 int32_t mMin; | |
| 58 int32_t mMax; | |
| 59 InvalidationArea* mNext; | |
| 60 }; | |
| 61 | |
| 62 InvalidationArea* mInvalidationArea; | |
| 63 }; | |
| 64 | |
| 65 #endif // nsTreeImageListener_h__ |
