Add default query method to WebIntentsRegistry.

chrome/browser/intents/web_intents_registry.h

 // 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_INTENTS_WEB_INTENTS_REGISTRY_H_
 #define CHROME_BROWSER_INTENTS_WEB_INTENTS_REGISTRY_H_
 #pragma once
 
 #include "base/callback_forward.h"
 #include "base/hash_tables.h"
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile_keyed_service.h"
 #include "chrome/browser/webdata/web_data_service.h"
 #include "webkit/glue/web_intent_service_data.h"
 
+struct DefaultWebIntentService;
+
 // Handles storing and retrieving of web intents services in the web database.
 // The registry provides filtering logic to retrieve specific types of services.
 class WebIntentsRegistry
     : public WebDataServiceConsumer,
       public ProfileKeyedService {
  public:
   // Unique identifier for service queries.
   typedef int QueryID;
 
   typedef std::vector<webkit_glue::WebIntentServiceData> IntentServiceList;
 
   // An interface the WebIntentsRegistry uses to notify its clients when
   // it has finished loading service data from the web database.
   class Consumer {
    public:
     // Notifies the observer that the request has been
     // completed.
     virtual void OnIntentsQueryDone(
         QueryID query_id,
         const IntentServiceList& services) = 0;
 
+    // Notifies the observer that a request for intents default service
+    // has been completed. If no default is found, the |default_service|
+    // service_url field will be empty.
+    virtual void OnIntentsDefaultsQueryDone(
+        QueryID query_id,
+        const DefaultWebIntentService& default_service) = 0;
+
    protected:
     virtual ~Consumer() {}
   };
 
   // Initializes, binds to a valid WebDataService.
   void Initialize(scoped_refptr<WebDataService> wds,
                   ExtensionServiceInterface* extension_service);
 
   // Registers a service.
   virtual void RegisterIntentService(
@@ skipping 13 matching lines @@
   // Requests all services. |consumer| must not be NULL
   QueryID GetAllIntentServices(Consumer* consumer);
 
   // Tests for the existence of the given |service|. Calls the
   // provided |callback| with true if it exists, false if it does not.
   // Checks for |service| equality with ==.
   QueryID IntentServiceExists(
       const webkit_glue::WebIntentServiceData& service,
       const base::Callback<void(bool)>& callback);
 
+  // Record the given default service entry.
+  virtual void RegisterDefaultIntentService(
+      const DefaultWebIntentService& default_service);
+
+  // Delete the given default service entry. Deletes entries matching
+  // the |action|, |type|, and |url_pattern| of |default_service|.
+  virtual void UnregisterDefaultIntentService(
+      const DefaultWebIntentService& default_service);
+
+  // Requests the best default intent service for the given invocation
+  // parameters.
+  QueryID GetDefaultIntentService(const string16& action,
+                                  const string16& type,
+                                  const GURL& invoking_url,
+                                  Consumer* consumer);
+
  protected:
   // Make sure that only WebIntentsRegistryFactory can create an instance of
   // WebIntentsRegistry.
   friend class WebIntentsRegistryFactory;
   friend class WebIntentsRegistryTest;
   friend class WebIntentsModelTest;
 
   WebIntentsRegistry();
   virtual ~WebIntentsRegistry();
 
  private:
+   const Extension* ExtensionForURL(const std::string& url);
+
    struct IntentsQuery;
 
   // Maps web data requests to intents queries.
   // Allows OnWebDataServiceRequestDone to forward to appropriate consumer.
   typedef base::hash_map<WebDataService::Handle, IntentsQuery*> QueryMap;
 
   // WebDataServiceConsumer implementation.
   virtual void OnWebDataServiceRequestDone(
       WebDataService::Handle h,
       const WDTypedResult* result) OVERRIDE;
 
+  // Delegate for defaults requests from OnWebDataServiceRequestDone.
+  virtual void OnWebDataServiceDefaultsRequestDone(
+      WebDataService::Handle h,
+      const WDTypedResult* result);
+
   // Map for all in-flight web data requests/intent queries.
   QueryMap queries_;
 
   // Unique identifier for next intent query.
   QueryID next_query_id_;
 
   // Local reference to Web Data Service.
   scoped_refptr<WebDataService> wds_;
 
   // Local reference to the ExtensionService.
   // Shutdown/cleanup is handled by ProfileImpl. We are  guaranteed that any
   // ProfileKeyedService will be shut down before data on ProfileImpl is
   // destroyed (i.e. |extension_service_|), so |extension_service_| is valid
   // for the lifetime of the WebIntentsRegistry object.
   ExtensionServiceInterface* extension_service_;
 
   DISALLOW_COPY_AND_ASSIGN(WebIntentsRegistry);
 };
 
 #endif  // CHROME_BROWSER_INTENTS_WEB_INTENTS_REGISTRY_H_