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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 COMPONENTS_FAVICON_CORE_FAVICON_DRIVER_H_
#define COMPONENTS_FAVICON_CORE_FAVICON_DRIVER_H_
class GURL;
namespace gfx {
class Image;
}
// Interface that allows Favicon core code to interact with its driver (i.e.,
// obtain information from it and give information to it). A concrete
// implementation must be provided by the driver.
class FaviconDriver {
public:
// Starts the download for the given favicon. When finished, the driver
// will call OnDidDownloadFavicon() with the results.
// Returns the unique id of the download request. The id will be passed
// in OnDidDownloadFavicon().
// Bitmaps with pixel sizes larger than |max_bitmap_size| are filtered out
// from the bitmap results. If there are no bitmap results <=
// |max_bitmap_size|, the smallest bitmap is resized to |max_bitmap_size| and
// is the only result. A |max_bitmap_size| of 0 means unlimited.
virtual int StartDownload(const GURL& url, int max_bitmap_size) = 0;
// Returns whether the user is operating in an off-the-record context.
virtual bool IsOffTheRecord() = 0;
// Returns the bitmap of the current page's favicon. Requires GetActiveURL()
// to be valid.
virtual const gfx::Image GetActiveFaviconImage() = 0;
// Returns the URL of the current page's favicon. Requires GetActiveURL() to
// be valid.
virtual const GURL GetActiveFaviconURL() = 0;
// Returns whether the page's favicon is valid (returns false if the default
// favicon is being used). Requires GetActiveURL() to be valid.
virtual bool GetActiveFaviconValidity() = 0;
// Returns the URL of the current page, if any. Returns an invalid
// URL otherwise.
virtual const GURL GetActiveURL() = 0;
// Notifies the driver a favicon image is available. |image| is not
// necessarily 16x16. |icon_url| is the url the image is from. If
// |is_active_favicon| is true the image corresponds to the favicon
// (possibly empty) of the page.
virtual void OnFaviconAvailable(const gfx::Image& image,
const GURL& icon_url,
bool is_active_favicon) = 0;
};
#endif // COMPONENTS_FAVICON_CORE_FAVICON_DRIVER_H_
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