Index: chrome/browser/ui/webui/large_icon_source.h |
diff --git a/chrome/browser/ui/webui/large_icon_source.h b/chrome/browser/ui/webui/large_icon_source.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..7d5da6b921cdb5466133f42d648d7753c0bfc98c |
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+++ b/chrome/browser/ui/webui/large_icon_source.h |
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+// Copyright 2015 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_UI_WEBUI_LARGE_ICON_SOURCE_H_ |
+#define CHROME_BROWSER_UI_WEBUI_LARGE_ICON_SOURCE_H_ |
+ |
+#include "base/memory/scoped_ptr.h" |
+#include "base/task/cancelable_task_tracker.h" |
+#include "components/favicon_base/fallback_icon_service.h" |
+#include "components/favicon_base/favicon_types.h" |
+#include "content/public/browser/url_data_source.h" |
+ |
+class Profile; |
+ |
+// LargeIconSource services explicit chrome:// requests for large icons. |
+// |
+// Format: |
+// chrome://large-icon/size/url |
+// |
+// Parameter: |
+// 'size' Required (including trailing '/') |
+// Positive integer to specify the large icon's size in pixels. |
+// 'url' Optional |
+// String to specify the page URL of the large icon. |
+// |
+// Example: chrome://large-icon/48/http://www.google.com/ |
+// This requests a 48x48 large icon for http://www.google.com. |
+class LargeIconSource : public content::URLDataSource { |
+ public: |
+ explicit LargeIconSource(Profile* profile); |
+ |
+ ~LargeIconSource() override; |
+ |
+ // content::URLDataSource implementation. |
+ std::string GetSource() const override; |
+ void StartDataRequest( |
+ const std::string& path, |
+ int render_process_id, |
+ int render_frame_id, |
+ const content::URLDataSource::GotDataCallback& callback) override; |
+ std::string GetMimeType(const std::string&) const override; |
+ bool ShouldReplaceExistingSource() const override; |
+ bool ShouldServiceRequest(const net::URLRequest* request) const override; |
+ |
+ protected: |
+ struct IconRequest { |
+ IconRequest(); |
+ IconRequest(const content::URLDataSource::GotDataCallback& callback_in, |
+ const GURL& path_in, |
+ int size_in); |
+ ~IconRequest(); |
+ |
+ content::URLDataSource::GotDataCallback callback; |
+ GURL url; |
+ int size; |
+ }; |
+ |
+ private: |
+ // Callback for icon data retrieval request. |
+ void OnIconDataAvailable( |
+ const IconRequest& request, |
+ const favicon_base::FaviconRawBitmapResult& bitmap_result); |
+ |
+ // Renders and sends a fallback icon. |
+ void SendFallbackIcon(const IconRequest& request); |
+ |
+ // Returns null to trigger "Not Found" response. |
+ void SendNotFoundResponse( |
+ const content::URLDataSource::GotDataCallback& callback); |
+ |
+ Profile* profile_; |
+ |
+ base::CancelableTaskTracker cancelable_task_tracker_; |
+ |
+ scoped_ptr<favicon_base::FallbackIconService> fallback_icon_service_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(LargeIconSource); |
+}; |
+ |
+#endif // CHROME_BROWSER_UI_WEBUI_LARGE_ICON_SOURCE_H_ |