network_content.h

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00001 /* $Id: network_content.h 22224 2011-03-07 19:18:38Z rubidium $ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #ifndef NETWORK_CONTENT_H
00013 #define NETWORK_CONTENT_H
00014 
00015 #include "core/tcp_content.h"
00016 #include "core/tcp_http.h"
00017 
00018 #if defined(ENABLE_NETWORK)
00019 
00021 typedef SmallVector<ContentInfo *, 16> ContentVector;
00022 typedef SmallVector<const ContentInfo *, 16> ConstContentVector;
00023 
00025 typedef ContentInfo **ContentIterator;
00026 typedef const ContentInfo * const * ConstContentIterator;
00027 
00029 struct ContentCallback {
00034   virtual void OnConnect(bool success) {}
00035 
00039   virtual void OnDisconnect() {}
00040 
00045   virtual void OnReceiveContentInfo(const ContentInfo *ci) {}
00046 
00052   virtual void OnDownloadProgress(const ContentInfo *ci, int bytes) {}
00053 
00058   virtual void OnDownloadComplete(ContentID cid) {}
00059 
00061   virtual ~ContentCallback() {}
00062 };
00063 
00067 class ClientNetworkContentSocketHandler : public NetworkContentSocketHandler, ContentCallback, HTTPCallback {
00068 protected:
00069   typedef SmallVector<ContentID, 4> ContentIDList;
00070   SmallVector<ContentCallback *, 2> callbacks; 
00071   ContentIDList requested;                     
00072   ContentVector infos;                         
00073   SmallVector<char, 1024> http_response;       
00074   int http_response_index;                     
00075 
00076   FILE *curFile;        
00077   ContentInfo *curInfo; 
00078   bool isConnecting;    
00079   uint32 lastActivity;  
00080 
00081   friend class NetworkContentConnecter;
00082 
00083   DECLARE_CONTENT_RECEIVE_COMMAND(PACKET_CONTENT_SERVER_INFO);
00084   DECLARE_CONTENT_RECEIVE_COMMAND(PACKET_CONTENT_SERVER_CONTENT);
00085 
00086   ContentInfo *GetContent(ContentID cid);
00087   void DownloadContentInfo(ContentID cid);
00088 
00089   void OnConnect(bool success);
00090   void OnDisconnect();
00091   void OnReceiveContentInfo(const ContentInfo *ci);
00092   void OnDownloadProgress(const ContentInfo *ci, int bytes);
00093   void OnDownloadComplete(ContentID cid);
00094 
00095   void OnFailure();
00096   void OnReceiveData(const char *data, size_t length);
00097 
00098   bool BeforeDownload();
00099   void AfterDownload();
00100 
00101   void DownloadSelectedContentHTTP(const ContentIDList &content);
00102   void DownloadSelectedContentFallback(const ContentIDList &content);
00103 public:
00105   static const int IDLE_TIMEOUT = 60 * 1000;
00106 
00107   ClientNetworkContentSocketHandler();
00108   ~ClientNetworkContentSocketHandler();
00109 
00110   void Connect();
00111   void SendReceive();
00112   void Close();
00113 
00114   void RequestContentList(ContentType type);
00115   void RequestContentList(uint count, const ContentID *content_ids);
00116   void RequestContentList(ContentVector *cv, bool send_md5sum = true);
00117 
00118   void DownloadSelectedContent(uint &files, uint &bytes, bool fallback = false);
00119 
00120   void Select(ContentID cid);
00121   void Unselect(ContentID cid);
00122   void SelectAll();
00123   void SelectUpgrade();
00124   void UnselectAll();
00125   void ToggleSelectedState(const ContentInfo *ci);
00126 
00127   void ReverseLookupDependency(ConstContentVector &parents, const ContentInfo *child) const;
00128   void ReverseLookupTreeDependency(ConstContentVector &tree, const ContentInfo *child) const;
00129   void CheckDependencyState(ContentInfo *ci);
00130 
00132   uint Length() const { return this->infos.Length(); }
00134   ConstContentIterator Begin() const { return this->infos.Begin(); }
00136   ConstContentIterator Get(uint32 index) const { return this->infos.Get(index); }
00138   ConstContentIterator End() const { return this->infos.End(); }
00139 
00140   void Clear();
00141 
00143   void AddCallback(ContentCallback *cb) { this->callbacks.Include(cb); }
00145   void RemoveCallback(ContentCallback *cb) { this->callbacks.Erase(this->callbacks.Find(cb)); }
00146 };
00147 
00148 extern ClientNetworkContentSocketHandler _network_content_client;
00149 
00150 void ShowNetworkContentListWindow(ContentVector *cv = NULL, ContentType type = CONTENT_TYPE_END);
00151 
00152 #else
00153 static inline void ShowNetworkContentListWindow() {}
00154 #endif /* ENABLE_NETWORK */
00155 
00156 #endif /* NETWORK_CONTENT_H */

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