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// Copyright 2014 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 CHROME_BROWSER_IMAGE_HOLDER_H_
#define CHROME_BROWSER_IMAGE_HOLDER_H_
#include "base/gtest_prod_util.h"
#include "base/memory/scoped_vector.h"
#include "chrome/browser/bitmap_fetcher/bitmap_fetcher.h"
#include "ui/gfx/image/image.h"
#include "ui/gfx/image/image_skia.h"
#include "url/gurl.h"
class Profile;
namespace chrome {
// This provides a callback so the ImageHolder can inform its parent when a
// bitmap arrives.
class ImageHolderDelegate {
public:
virtual void OnFetchComplete() = 0;
};
// This class encapsulates the action of fetching a bitmap, reporting when it is
// fetched, and holding onto the bitmap until no longer needed.
class ImageHolder : public chrome::BitmapFetcherDelegate {
public:
ImageHolder(const GURL& low_dpi_url,
const GURL& high_dpi_url,
Profile* profile,
ImageHolderDelegate* delegate);
~ImageHolder() override;
// Begin fetching of the URLs we have.
void StartFetch();
// Check whether we have a response from the server for these resources,
// even if the response is a failed fetch.
bool IsFetchingDone() const;
// Inherited from BitmapFetcherDelegate
void OnFetchComplete(const GURL& url, const SkBitmap* bitmap) override;
// Accessors:
GURL low_dpi_url() const { return low_dpi_url_; }
GURL high_dpi_url() const { return high_dpi_url_; }
gfx::Image low_dpi_image() { return gfx::Image(image_); }
private:
// Helper function to create a bitmap fetcher (but not start the fetch).
void CreateBitmapFetcher(const GURL& url);
GURL low_dpi_url_;
GURL high_dpi_url_;
bool low_dpi_fetched_;
bool high_dpi_fetched_;
gfx::ImageSkia image_;
ImageHolderDelegate* delegate_;
ScopedVector<chrome::BitmapFetcher> fetchers_;
Profile* profile_;
FRIEND_TEST_ALL_PREFIXES(ImageHolderTest, CreateBitmapFetcherTest);
FRIEND_TEST_ALL_PREFIXES(ImageHolderTest, OnFetchCompleteTest);
FRIEND_TEST_ALL_PREFIXES(ImageHolderTest, IsFetchingDoneTest);
DISALLOW_COPY_AND_ASSIGN(ImageHolder);
};
} // namespace chrome.
#endif // CHROME_BROWSER_IMAGE_HOLDER_H_