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// Copyright (c) 2012 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_FAVICON_SOURCE_H_
#define CHROME_BROWSER_UI_WEBUI_FAVICON_SOURCE_H_
#include <map>
#include <string>
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "chrome/browser/favicon/favicon_service.h"
#include "chrome/browser/ui/webui/chrome_url_data_manager.h"
class Profile;
// FaviconSource is the gateway between network-level chrome:
// requests for favicons and the history backend that serves these.
class FaviconSource : public ChromeURLDataManager::DataSource {
public:
// Defines the type of icon the FaviconSource will provide.
enum IconType {
FAVICON,
// Any available icon in the priority of TOUCH_ICON_PRECOMPOSED, TOUCH_ICON,
// FAVICON, and default favicon.
ANY
};
// |type| is the type of icon this FaviconSource will provide.
FaviconSource(Profile* profile, IconType type);
// Constructor allowing the source name to be specified.
FaviconSource(Profile* profile,
IconType type,
const std::string& source_name);
// Called when the network layer has requested a resource underneath
// the path we registered.
virtual void StartDataRequest(const std::string& path,
bool is_incognito,
int request_id) OVERRIDE;
virtual std::string GetMimeType(const std::string&) const OVERRIDE;
virtual bool ShouldReplaceExistingSource() const OVERRIDE;
protected:
virtual ~FaviconSource();
Profile* profile_;
private:
struct IconRequest {
IconRequest()
: request_id(0),
pixel_size(16),
scale_factor(ui::SCALE_FACTOR_NONE) {
}
IconRequest(int id, int size, ui::ScaleFactor scale)
: request_id(id),
pixel_size(size),
scale_factor(scale) {
}
int request_id;
int pixel_size;
ui::ScaleFactor scale_factor;
};
void Init(Profile* profile, IconType type);
// Called when favicon data is available from the history backend.
void OnFaviconDataAvailable(
FaviconService::Handle request_handle,
const history::FaviconBitmapResult& bitmap_result);
// Sends the default favicon.
void SendDefaultResponse(const IconRequest& request);
CancelableRequestConsumerTSimple<IconRequest> cancelable_consumer_;
// Raw PNG representation of the favicon to show when the favicon
// database doesn't have a favicon for a webpage.
// 16x16
scoped_refptr<base::RefCountedMemory> default_favicon_;
// 32x32
scoped_refptr<base::RefCountedMemory> default_favicon_large_;
// The history::IconTypes of icon that this FaviconSource handles.
int icon_types_;
DISALLOW_COPY_AND_ASSIGN(FaviconSource);
};
#endif // CHROME_BROWSER_UI_WEBUI_FAVICON_SOURCE_H_
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