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// Copyright (c) 2011 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/hash_tables.h"
#include "base/memory/ref_counted.h"
#include "chrome/browser/intents/web_intent_data.h"
#include "chrome/browser/webdata/web_data_service.h"
// Handles storing and retrieving of web intents in the web database.
// The registry provides filtering logic to retrieve specific types of intents.
class WebIntentsRegistry : public WebDataServiceConsumer {
public:
// Unique identifier for intent queries.
typedef int QueryID;
// An interface the WebIntentsRegistry uses to notify its clients when
// it has finished loading intents data from the web database.
class Consumer {
public:
// Notifies the observer that the intents request has been completed.
virtual void OnIntentsQueryDone(
QueryID query_id,
const std::vector<WebIntentData>& intents) = 0;
protected:
virtual ~Consumer() {}
};
WebIntentsRegistry();
virtual ~WebIntentsRegistry();
// Initializes, binds to a valid WebDataService.
void Initialize(scoped_refptr<WebDataService> wds);
// Registers a web intent provider.
void RegisterIntentProvider(const WebIntentData& intent);
// Removes a web intent provider from the registry.
void UnregisterIntentProvider(const WebIntentData& intent);
// Requests all intent providers matching |action|.
// |consumer| must not be NULL.
QueryID GetIntentProviders(const string16& action, Consumer* consumer);
private:
struct IntentsQuery;
// Maps web data requests to intents queries.
// Allows OnWebDataServiceRequestDone to forward to appropiate consumer.
typedef base::hash_map<WebDataService::Handle, IntentsQuery*> QueryMap;
// WebDataServiceConsumer implementation.
virtual void OnWebDataServiceRequestDone(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_;
DISALLOW_COPY_AND_ASSIGN(WebIntentsRegistry);
};
#endif // CHROME_BROWSER_INTENTS_WEB_INTENTS_REGISTRY_H_
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