apt-pkg/contrib/progress.h

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: progress.h,v 1.6 2001/05/07 05:06:52 jgg Exp $
   4 /* ######################################################################
   5
   6    OpProgress - Operation Progress
   7
   8    This class allows lengthy operations to communicate their progress
   9    to the GUI. The progress model is simple and is not designed to handle
  10    the complex case of the multi-activity aquire class.
  11
  12    The model is based on the concept of an overall operation consisting
  13    of a series of small sub operations. Each sub operation has it's own
  14    completion status and the overall operation has it's completion status.
  15    The units of the two are not mixed and are completely independent.
  16
  17    The UI is expected to subclass this to provide the visuals to the user.
  18
  19    ##################################################################### */
  20                                                                         /*}}}*/
  21 #ifndef PKGLIB_PROGRESS_H
  22 #define PKGLIB_PROGRESS_H
  23
  24 #ifdef __GNUG__
  25 #pragma interface "apt-pkg/progress.h"
  26 #endif
  27
  28 #include <string>
  29 #include <sys/time.h>
  30
  31 using std::string;
  32
  33 class Configuration;
  34 class OpProgress
  35 {
  36    unsigned long Current;
  37    unsigned long Total;
  38    unsigned long Size;
  39    unsigned long SubTotal;
  40    float LastPercent;
  41
  42    // Change reduction code
  43    struct timeval LastTime;
  44    string LastOp;
  45    string LastSubOp;
  46
  47    protected:
  48
  49    string Op;
  50    string SubOp;
  51    float Percent;
  52
  53    bool MajorChange;
  54
  55    bool CheckChange(float Interval = 0.7);
  56    virtual void Update() {};
  57
  58    public:
  59
  60    void Progress(unsigned long Current);
  61    void SubProgress(unsigned long SubTotal);
  62    void SubProgress(unsigned long SubTotal,string Op);
  63    void OverallProgress(unsigned long Current,unsigned long Total,
  64                         unsigned long Size,string Op);
  65    virtual void Done() {};
  66
  67    OpProgress();
  68    virtual ~OpProgress() {};
  69 };
  70
  71 class OpTextProgress : public OpProgress
  72 {
  73    protected:
  74
  75    string OldOp;
  76    bool NoUpdate;
  77    bool NoDisplay;
  78    unsigned long LastLen;
  79    virtual void Update();
  80    void Write(const char *S);
  81
  82    public:
  83
  84    virtual void Done();
  85
  86    OpTextProgress(bool NoUpdate = false) : NoUpdate(NoUpdate),
  87                 NoDisplay(false), LastLen(0) {};
  88    OpTextProgress(Configuration &Config);
  89    virtual ~OpTextProgress() {Done();};
  90 };
  91
  92 #endif