components/viz/test/ordered_texture_map.h

// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_VIZ_TEST_ORDERED_TEXTURE_MAP_H_
#define COMPONENTS_VIZ_TEST_ORDERED_TEXTURE_MAP_H_

#include <stddef.h>

#include <unordered_map>
#include <vector>

#include "base/memory/ref_counted.h"
#include "third_party/khronos/GLES2/gl2.h"

namespace viz {

struct TestTexture;

class OrderedTextureMap {
 public:
  OrderedTextureMap();
  ~OrderedTextureMap();

  void Append(GLuint id, scoped_refptr<TestTexture> texture);
  void Replace(GLuint id, scoped_refptr<TestTexture> texture);
  void Remove(GLuint id);

  size_t Size();

  bool ContainsId(GLuint id);

  scoped_refptr<TestTexture> TextureForId(GLuint id);
  GLuint IdAt(size_t index);

 private:
  using TextureMap = std::unordered_map<GLuint, scoped_refptr<TestTexture>>;
  using TextureList = std::vector<GLuint>;

  TextureMap textures_;
  TextureList ordered_textures_;
};

}  // namespace viz

#endif  // COMPONENTS_VIZ_TEST_ORDERED_TEXTURE_MAP_H_