src/apps/musiccollection/QueryMonitor.h

   1 /*
   2  * Copyright 2011, Haiku, Inc. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Clemens Zeidler <haiku@clemens-zeidler.de>
   7  */
   8 #ifndef QUERY_MONITOR_H
   9 #define QUERY_MONITOR_H
  10
  11
  12 #include <Query.h>
  13
  14 #include <ObjectList.h>
  15
  16 #include "FileMonitor.h"
  17
  18
  19 /*! Handle live query messages, query reader messages, and node monitor messages
  20 and dispatch them to a EntryViewInterface. */
  21 class QueryHandler : public FileMonitor {
  22 public:
  23                                                                 QueryHandler(EntryViewInterface* listener);
  24
  25                         void                            MessageReceived(BMessage* message);
  26 };
  27
  28
  29 typedef BObjectList<BQuery> BQueryList;
  30
  31
  32 class QueryReader : public ReadThread {
  33 public:
  34                                                                 QueryReader(QueryHandler* handler);
  35                                                                 ~QueryReader();
  36
  37                         bool                            AddQuery(BQuery* query);
  38                         void                            Reset();
  39
  40 protected:
  41                         bool                            ReadNextEntry(entry_ref& entry);
  42
  43 private:
  44                         BQueryList                      fQueries;
  45                         BQueryList                      fLiveQueries;
  46 };
  47
  48
  49 #endif // QUERY_MONITOR_H