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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsTreeImageListener_h__
#define nsTreeImageListener_h__
#include "nsString.h"
#include "nsCOMPtr.h"
#include "nsTreeBodyFrame.h"
#include "mozilla/Attributes.h"
class nsTreeColumn;
// This class handles image load observation.
class nsTreeImageListener final : public imgINotificationObserver {
public:
explicit nsTreeImageListener(nsTreeBodyFrame* aTreeFrame);
NS_DECL_ISUPPORTS
NS_DECL_IMGINOTIFICATIONOBSERVER
NS_IMETHOD ClearFrame();
friend class nsTreeBodyFrame;
protected:
~nsTreeImageListener();
void UnsuppressInvalidation() { mInvalidationSuppressed = false; }
void Invalidate();
void AddCell(int32_t aIndex, nsTreeColumn* aCol);
private:
nsTreeBodyFrame* mTreeFrame;
// A guard that prevents us from recursive painting.
bool mInvalidationSuppressed;
class InvalidationArea {
public:
explicit InvalidationArea(nsTreeColumn* aCol);
~InvalidationArea() { delete mNext; }
friend class nsTreeImageListener;
protected:
void AddRow(int32_t aIndex);
nsTreeColumn* GetCol() { return mCol.get(); }
int32_t GetMin() { return mMin; }
int32_t GetMax() { return mMax; }
InvalidationArea* GetNext() { return mNext; }
void SetNext(InvalidationArea* aNext) { mNext = aNext; }
private:
RefPtr<nsTreeColumn> mCol;
int32_t mMin;
int32_t mMax;
InvalidationArea* mNext;
};
InvalidationArea* mInvalidationArea;
};
#endif // nsTreeImageListener_h__
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