1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "android_webview/browser/icon_helper.h"
6
7 #include "base/bind.h"
8 #include "base/callback.h"
9 #include "base/hash.h"
10 #include "base/logging.h"
11 #include "content/public/browser/browser_thread.h"
12 #include "content/public/browser/web_contents.h"
13 #include "content/public/common/favicon_url.h"
14 #include "third_party/skia/include/core/SkBitmap.h"
15 #include "ui/gfx/size.h"
16
17 using content::BrowserThread;
18 using content::WebContents;
19
20 namespace android_webview {
21
IconHelper(WebContents * web_contents)22 IconHelper::IconHelper(WebContents* web_contents)
23 : WebContentsObserver(web_contents),
24 listener_(NULL),
25 missing_favicon_urls_() {
26 }
27
~IconHelper()28 IconHelper::~IconHelper() {
29 }
30
SetListener(Listener * listener)31 void IconHelper::SetListener(Listener* listener) {
32 listener_ = listener;
33 }
34
DownloadFaviconCallback(int id,int http_status_code,const GURL & image_url,const std::vector<SkBitmap> & bitmaps,const std::vector<gfx::Size> & original_bitmap_sizes)35 void IconHelper::DownloadFaviconCallback(
36 int id,
37 int http_status_code,
38 const GURL& image_url,
39 const std::vector<SkBitmap>& bitmaps,
40 const std::vector<gfx::Size>& original_bitmap_sizes) {
41 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
42 if (http_status_code == 404) {
43 MarkUnableToDownloadFavicon(image_url);
44 return;
45 }
46
47 if (bitmaps.size() == 0) {
48 return;
49 }
50
51 // We can protentially have multiple frames of the icon
52 // in different sizes. We need more fine grain API spec
53 // to let clients pick out the frame they want.
54
55 // TODO(acleung): Pick the best icon to return based on size.
56 if (listener_)
57 listener_->OnReceivedIcon(image_url, bitmaps[0]);
58 }
59
DidUpdateFaviconURL(const std::vector<content::FaviconURL> & candidates)60 void IconHelper::DidUpdateFaviconURL(
61 const std::vector<content::FaviconURL>& candidates) {
62 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
63 for (std::vector<content::FaviconURL>::const_iterator i = candidates.begin();
64 i != candidates.end(); ++i) {
65 if (!i->icon_url.is_valid())
66 continue;
67
68 switch(i->icon_type) {
69 case content::FaviconURL::FAVICON:
70 if ((listener_ && !listener_->ShouldDownloadFavicon(i->icon_url)) ||
71 WasUnableToDownloadFavicon(i->icon_url)) {
72 break;
73 }
74 web_contents()->DownloadImage(i->icon_url,
75 true, // Is a favicon
76 0, // No maximum size
77 base::Bind(
78 &IconHelper::DownloadFaviconCallback, base::Unretained(this)));
79 break;
80 case content::FaviconURL::TOUCH_ICON:
81 if (listener_)
82 listener_->OnReceivedTouchIconUrl(i->icon_url.spec(), false);
83 break;
84 case content::FaviconURL::TOUCH_PRECOMPOSED_ICON:
85 if (listener_)
86 listener_->OnReceivedTouchIconUrl(i->icon_url.spec(), true);
87 break;
88 case content::FaviconURL::INVALID_ICON:
89 // Silently ignore it. Only trigger a callback on valid icons.
90 break;
91 default:
92 NOTREACHED();
93 break;
94 }
95 }
96 }
97
DidStartNavigationToPendingEntry(const GURL & url,content::NavigationController::ReloadType reload_type)98 void IconHelper::DidStartNavigationToPendingEntry(
99 const GURL& url,
100 content::NavigationController::ReloadType reload_type) {
101 if (reload_type == content::NavigationController::RELOAD_IGNORING_CACHE)
102 ClearUnableToDownloadFavicons();
103 }
104
MarkUnableToDownloadFavicon(const GURL & icon_url)105 void IconHelper::MarkUnableToDownloadFavicon(const GURL& icon_url) {
106 MissingFaviconURLHash url_hash = base::Hash(icon_url.spec());
107 missing_favicon_urls_.insert(url_hash);
108 }
109
WasUnableToDownloadFavicon(const GURL & icon_url) const110 bool IconHelper::WasUnableToDownloadFavicon(const GURL& icon_url) const {
111 MissingFaviconURLHash url_hash = base::Hash(icon_url.spec());
112 return missing_favicon_urls_.find(url_hash) != missing_favicon_urls_.end();
113 }
114
ClearUnableToDownloadFavicons()115 void IconHelper::ClearUnableToDownloadFavicons() {
116 missing_favicon_urls_.clear();
117 }
118
119 } // namespace android_webview
120