lib/choose_rev.tcl

   1 # git-gui revision chooser
   2 # Copyright (C) 2006, 2007 Shawn Pearce
   3
   4 class choose_rev {
   5
   6 field w               ; # our megawidget path
   7 field revtype       {}; # type of revision chosen
   8
   9 field c_head        {}; # selected local branch head
  10 field c_trck        {}; # selected tracking branch
  11 field c_tag         {}; # selected tag
  12 field c_expr        {}; # current revision expression
  13
  14 constructor new {path {title {}}} {
  15         global all_heads current_branch
  16
  17         set w $path
  18
  19         if {$title ne {}} {
  20                 labelframe $w -text $title
  21         } else {
  22                 frame $w
  23         }
  24         bind $w <Destroy> [cb _delete %W]
  25
  26         if {$all_heads ne {}} {
  27                 set c_head $current_branch
  28                 radiobutton $w.head_r \
  29                         -text {Local Branch:} \
  30                         -value head \
  31                         -variable @revtype
  32                 eval tk_optionMenu $w.head_m @c_head $all_heads
  33                 grid $w.head_r $w.head_m -sticky w
  34                 if {$revtype eq {}} {
  35                         set revtype head
  36                 }
  37                 trace add variable @c_head write [cb _select head]
  38         }
  39
  40         set all_trackings [all_tracking_branches]
  41         if {$all_trackings ne {}} {
  42                 set c_trck [lindex $all_trackings 0]
  43                 radiobutton $w.trck_r \
  44                         -text {Tracking Branch:} \
  45                         -value trck \
  46                         -variable @revtype
  47                 eval tk_optionMenu $w.trck_m @c_trck $all_trackings
  48                 grid $w.trck_r $w.trck_m -sticky w
  49                 if {$revtype eq {}} {
  50                         set revtype trck
  51                 }
  52                 trace add variable @c_trck write [cb _select trck]
  53         }
  54
  55         set all_tags [load_all_tags]
  56         if {$all_tags ne {}} {
  57                 set c_tag [lindex $all_tags 0]
  58                 radiobutton $w.tag_r \
  59                         -text {Tag:} \
  60                         -value tag \
  61                         -variable @revtype
  62                 eval tk_optionMenu $w.tag_m @c_tag $all_tags
  63                 grid $w.tag_r $w.tag_m -sticky w
  64                 if {$revtype eq {}} {
  65                         set revtype tag
  66                 }
  67                 trace add variable @c_tag write [cb _select tag]
  68         }
  69
  70         radiobutton $w.expr_r \
  71                 -text {Revision Expression:} \
  72                 -value expr \
  73                 -variable @revtype
  74         entry $w.expr_t \
  75                 -borderwidth 1 \
  76                 -relief sunken \
  77                 -width 50 \
  78                 -textvariable @c_expr \
  79                 -validate key \
  80                 -validatecommand [cb _validate %d %S]
  81         grid $w.expr_r $w.expr_t -sticky we -padx {0 5}
  82         if {$revtype eq {}} {
  83                 set revtype expr
  84         }
  85
  86         grid columnconfigure $w 1 -weight 1
  87         return $this
  88 }
  89
  90 method none {text} {
  91         if {[winfo exists $w.none_r]} {
  92                 $w.none_r configure -text $text
  93                 return
  94         }
  95
  96         radiobutton $w.none_r \
  97                 -anchor w \
  98                 -text $text \
  99                 -value none \
 100                 -variable @revtype
 101         grid $w.none_r -sticky we -padx {0 5} -columnspan 2
 102         if {$revtype eq {}} {
 103                 set revtype none
 104         }
 105 }
 106
 107 method get {} {
 108         switch -- $revtype {
 109         head { return $c_head }
 110         trck { return $c_trck }
 111         tag  { return $c_tag  }
 112         expr { return $c_expr }
 113         none { return {}      }
 114         default { error "unknown type of revision" }
 115         }
 116 }
 117
 118 method get_commit {} {
 119         if {$revtype eq {none}} {
 120                 return {}
 121         }
 122         set rev [get $this]
 123         return [git rev-parse --verify "${rev}^0"]
 124 }
 125
 126 method _validate {d S} {
 127         if {$d == 1} {
 128                 if {[regexp {\s} $S]} {
 129                         return 0
 130                 }
 131                 if {[string length $S] > 0} {
 132                         set revtype expr
 133                 }
 134         }
 135         return 1
 136 }
 137
 138 method _select {value args} {
 139         set revtype $value
 140 }
 141
 142 method _delete {current} {
 143         if {$current eq $w} {
 144                 delete_this
 145         }
 146 }
 147
 148 }