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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 CONTENT_BROWSER_BROWSER_URL_HANDLER_IMPL_H_
      6 #define CONTENT_BROWSER_BROWSER_URL_HANDLER_IMPL_H_
      7 
      8 #include <vector>
      9 #include <utility>
     10 
     11 #include "base/gtest_prod_util.h"
     12 #include "base/memory/singleton.h"
     13 #include "content/public/browser/browser_url_handler.h"
     14 
     15 class GURL;
     16 
     17 namespace content {
     18 class BrowserContext;
     19 
     20 class CONTENT_EXPORT BrowserURLHandlerImpl : public BrowserURLHandler {
     21  public:
     22   // Returns the singleton instance.
     23   static BrowserURLHandlerImpl* GetInstance();
     24 
     25   // BrowserURLHandler implementation:
     26   virtual void RewriteURLIfNecessary(GURL* url,
     27                                      BrowserContext* browser_context,
     28                                      bool* reverse_on_redirect) OVERRIDE;
     29   // Add the specified handler pair to the list of URL handlers.
     30   virtual void AddHandlerPair(URLHandler handler,
     31                               URLHandler reverse_handler) OVERRIDE;
     32 
     33   // Reverses the rewriting that was done for |original| using the new |url|.
     34   bool ReverseURLRewrite(GURL* url, const GURL& original,
     35                          BrowserContext* browser_context);
     36 
     37  private:
     38   // This object is a singleton:
     39   BrowserURLHandlerImpl();
     40   virtual ~BrowserURLHandlerImpl();
     41   friend struct DefaultSingletonTraits<BrowserURLHandlerImpl>;
     42 
     43   // The list of known URLHandlers, optionally with reverse-rewriters.
     44   typedef std::pair<URLHandler, URLHandler> HandlerPair;
     45   std::vector<HandlerPair> url_handlers_;
     46 
     47   FRIEND_TEST_ALL_PREFIXES(BrowserURLHandlerImplTest, BasicRewriteAndReverse);
     48   FRIEND_TEST_ALL_PREFIXES(BrowserURLHandlerImplTest, NullHandlerReverse);
     49 
     50   DISALLOW_COPY_AND_ASSIGN(BrowserURLHandlerImpl);
     51 };
     52 
     53 }  // namespace content
     54 
     55 #endif  // CONTENT_BROWSER_BROWSER_URL_HANDLER_IMPL_H_
     56