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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_QUOTA_INTERNALS_QUOTA_INTERNALS_PROXY_H_
      6 #define CHROME_BROWSER_UI_WEBUI_QUOTA_INTERNALS_QUOTA_INTERNALS_PROXY_H_
      7 
      8 #include <map>
      9 #include <set>
     10 #include <string>
     11 #include <vector>
     12 
     13 #include "base/memory/ref_counted.h"
     14 #include "base/memory/weak_ptr.h"
     15 #include "base/sequenced_task_runner_helpers.h"
     16 #include "content/public/browser/browser_thread.h"
     17 #include "storage/browser/quota/quota_manager.h"
     18 #include "storage/common/quota/quota_types.h"
     19 
     20 namespace quota_internals {
     21 
     22 class QuotaInternalsHandler;
     23 class GlobalStorageInfo;
     24 class PerHostStorageInfo;
     25 class PerOriginStorageInfo;
     26 typedef std::map<std::string, std::string> Statistics;
     27 
     28 // This class is the bridge between QuotaInternalsHandler and QuotaManager.
     29 // Each QuotaInternalsHandler instances creates and owns a instance of this
     30 // class.
     31 class QuotaInternalsProxy
     32     : public base::RefCountedThreadSafe<
     33           QuotaInternalsProxy,
     34           content::BrowserThread::DeleteOnIOThread> {
     35  public:
     36   explicit QuotaInternalsProxy(QuotaInternalsHandler* handler);
     37 
     38   void RequestInfo(scoped_refptr<storage::QuotaManager> quota_manager);
     39 
     40  private:
     41   friend class base::DeleteHelper<QuotaInternalsProxy>;
     42   friend struct content::BrowserThread::DeleteOnThread<
     43       content::BrowserThread::IO>;
     44   friend class QuotaInternalsHandler;
     45 
     46   typedef storage::QuotaManager::QuotaTableEntries QuotaTableEntries;
     47   typedef storage::QuotaManager::OriginInfoTableEntries OriginInfoTableEntries;
     48 
     49   virtual ~QuotaInternalsProxy();
     50 
     51   void ReportAvailableSpace(int64 available_space);
     52   void ReportGlobalInfo(const GlobalStorageInfo& data);
     53   void ReportPerHostInfo(const std::vector<PerHostStorageInfo>& hosts);
     54   void ReportPerOriginInfo(const std::vector<PerOriginStorageInfo>& origins);
     55   void ReportStatistics(const Statistics& stats);
     56 
     57   // Called on IO Thread by QuotaManager as callback.
     58   void DidGetAvailableSpace(storage::QuotaStatusCode status, int64 space);
     59   void DidGetGlobalQuota(storage::StorageType type,
     60                          storage::QuotaStatusCode status,
     61                          int64 quota);
     62   void DidGetGlobalUsage(storage::StorageType type,
     63                          int64 usage,
     64                          int64 unlimited_usage);
     65   void DidDumpQuotaTable(const QuotaTableEntries& entries);
     66   void DidDumpOriginInfoTable(const OriginInfoTableEntries& entries);
     67   void DidGetHostUsage(const std::string& host,
     68                        storage::StorageType type,
     69                        int64 usage);
     70 
     71   // Helper. Called on IO Thread.
     72   void RequestPerOriginInfo(storage::StorageType type);
     73   void VisitHost(const std::string& host, storage::StorageType type);
     74   void GetHostUsage(const std::string& host, storage::StorageType type);
     75 
     76   // Used on UI Thread.
     77   QuotaInternalsHandler* handler_;
     78 
     79   // Used on IO Thread.
     80   scoped_refptr<storage::QuotaManager> quota_manager_;
     81   std::set<std::pair<std::string, storage::StorageType> > hosts_visited_,
     82       hosts_pending_;
     83   std::vector<PerHostStorageInfo> report_pending_;
     84   base::WeakPtrFactory<QuotaInternalsProxy> weak_factory_;
     85 
     86   DISALLOW_COPY_AND_ASSIGN(QuotaInternalsProxy);
     87 };
     88 }  // namespace quota_internals
     89 
     90 #endif  // CHROME_BROWSER_UI_WEBUI_QUOTA_INTERNALS_QUOTA_INTERNALS_PROXY_H_
     91