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      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 #ifndef CONTENT_BROWSER_WEBUI_WEB_UI_CONTROLLER_FACTORY_REGISTRY_H_
      6 #define CONTENT_BROWSER_WEBUI_WEB_UI_CONTROLLER_FACTORY_REGISTRY_H_
      7 
      8 #include "base/memory/singleton.h"
      9 #include "content/public/browser/web_ui_controller_factory.h"
     10 
     11 namespace content {
     12 
     13 // A singleton which holds on to all the registered WebUIControllerFactory
     14 // instances.
     15 class CONTENT_EXPORT WebUIControllerFactoryRegistry
     16     : public WebUIControllerFactory {
     17  public:
     18   static WebUIControllerFactoryRegistry* GetInstance();
     19 
     20   // WebUIControllerFactory implementation. Each method loops through the same
     21   // method on all the factories.
     22   virtual WebUIController* CreateWebUIControllerForURL(
     23       WebUI* web_ui, const GURL& url) const OVERRIDE;
     24   virtual WebUI::TypeID GetWebUIType(BrowserContext* browser_context,
     25                                      const GURL& url) const OVERRIDE;
     26   virtual bool UseWebUIForURL(BrowserContext* browser_context,
     27                               const GURL& url) const OVERRIDE;
     28   virtual bool UseWebUIBindingsForURL(BrowserContext* browser_context,
     29                                       const GURL& url) const OVERRIDE;
     30 
     31   // Returns true if the given URL can be loaded by Web UI system. This allows
     32   // URLs that UseWebUIForURL returns true for, and also URLs that can be loaded
     33   // by normal tabs such as javascript: URLs or about:hang.
     34   bool IsURLAcceptableForWebUI(BrowserContext* browser_context,
     35                                const GURL& url,
     36                                bool data_urls_allowed) const;
     37 
     38  private:
     39   friend struct DefaultSingletonTraits<WebUIControllerFactoryRegistry>;
     40 
     41   WebUIControllerFactoryRegistry();
     42   virtual ~WebUIControllerFactoryRegistry();
     43 
     44   DISALLOW_COPY_AND_ASSIGN(WebUIControllerFactoryRegistry);
     45 };
     46 
     47 }  // namespace content
     48 
     49 #endif  // CONTENT_BROWSER_WEBUI_WEB_UI_CONTROLLER_FACTORY_REGISTRY_H_
     50