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      1 // Copyright (c) 2012 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 #ifndef CHROME_BROWSER_UI_WEBUI_CHROME_WEB_UI_CONTROLLER_FACTORY_H_
      6 #define CHROME_BROWSER_UI_WEBUI_CHROME_WEB_UI_CONTROLLER_FACTORY_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "base/memory/singleton.h"
     10 #include "components/favicon_base/favicon_callback.h"
     11 #include "content/public/browser/web_ui.h"
     12 #include "content/public/browser/web_ui_controller_factory.h"
     13 #include "ui/base/layout.h"
     14 
     15 class Profile;
     16 
     17 namespace base {
     18 class RefCountedMemory;
     19 }
     20 
     21 class ChromeWebUIControllerFactory : public content::WebUIControllerFactory {
     22  public:
     23   virtual content::WebUI::TypeID GetWebUIType(
     24       content::BrowserContext* browser_context,
     25       const GURL& url) const OVERRIDE;
     26   virtual bool UseWebUIForURL(content::BrowserContext* browser_context,
     27                               const GURL& url) const OVERRIDE;
     28   virtual bool UseWebUIBindingsForURL(content::BrowserContext* browser_context,
     29                                       const GURL& url) const OVERRIDE;
     30   virtual content::WebUIController* CreateWebUIControllerForURL(
     31       content::WebUI* web_ui,
     32       const GURL& url) const OVERRIDE;
     33 
     34   // Get the favicon for |page_url| and run |callback| with result when loaded.
     35   // Note. |callback| is always run asynchronously.
     36   void GetFaviconForURL(
     37       Profile* profile,
     38       const GURL& page_url,
     39       const std::vector<int>& desired_sizes_in_pixel,
     40       const favicon_base::FaviconResultsCallback& callback) const;
     41 
     42   static ChromeWebUIControllerFactory* GetInstance();
     43 
     44  protected:
     45   ChromeWebUIControllerFactory();
     46   virtual ~ChromeWebUIControllerFactory();
     47 
     48  private:
     49   friend struct DefaultSingletonTraits<ChromeWebUIControllerFactory>;
     50 
     51   // Gets the data for the favicon for a WebUI page. Returns NULL if the WebUI
     52   // does not have a favicon.
     53   // The returned favicon data must be
     54   // |gfx::kFaviconSize| x |gfx::kFaviconSize| DIP. GetFaviconForURL() should
     55   // be updated if this changes.
     56   base::RefCountedMemory* GetFaviconResourceBytes(
     57       const GURL& page_url, ui::ScaleFactor scale_factor) const;
     58 
     59   DISALLOW_COPY_AND_ASSIGN(ChromeWebUIControllerFactory);
     60 };
     61 
     62 #endif  // CHROME_BROWSER_UI_WEBUI_CHROME_WEB_UI_CONTROLLER_FACTORY_H_
     63