nsTreeImageListener.h

Enable keyboard shortcuts

/* -*- 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__