1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_NTP_TILES_ICON_CACHER_H_
#define COMPONENTS_NTP_TILES_ICON_CACHER_H_
#include "base/functional/callback.h"
#include "components/ntp_tiles/popular_sites.h"
namespace ntp_tiles {
// Ensures that Popular Sites icons and MostLikely icons are cached, downloading
// and saving them if not.
//
// Does not provide any way to get a fetched favicon; use the FaviconService /
// LargeIconService for that. All this interface guarantees is that
// FaviconService will be able to get you an icon (if it exists).
class IconCacher {
public:
virtual ~IconCacher() = default;
// Fetches the icon if necessary. If a new icon was fetched, the optional
// |icon_available| callback will be invoked.
// If there are preliminary icons (e.g. provided by static resources), the
// optional |preliminary_icon_available| callback will be invoked in addition.
virtual void StartFetchPopularSites(
PopularSites::Site site,
base::OnceClosure icon_available,
base::OnceClosure preliminary_icon_available) = 0;
// Fetches the icon if necessary, then invokes |done| with true if it was
// newly fetched (false if it was already cached or could not be fetched).
virtual void StartFetchMostLikely(const GURL& page_url,
base::OnceClosure icon_available) = 0;
};
} // namespace ntp_tiles
#endif // COMPONENTS_NTP_TILES_ICON_CACHER_H_
|
