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 field trck_spec       ; # array of specifications
  15
  16 constructor new {path {title {}}} {
  17         global all_heads current_branch
  18
  19         set w $path
  20
  21         if {$title ne {}} {
  22                 labelframe $w -text $title
  23         } else {
  24                 frame $w
  25         }
  26         bind $w <Destroy> [cb _delete %W]
  27
  28         if {$all_heads ne {}} {
  29                 set c_head $current_branch
  30                 radiobutton $w.head_r \
  31                         -text {Local Branch:} \
  32                         -value head \
  33                         -variable @revtype
  34                 eval tk_optionMenu $w.head_m @c_head $all_heads
  35                 grid $w.head_r $w.head_m -sticky w
  36                 if {$revtype eq {}} {
  37                         set revtype head
  38                 }
  39                 trace add variable @c_head write [cb _select head]
  40         }
  41
  42         set trck_list [all_tracking_branches]
  43         if {$trck_list ne {}} {
  44                 set nam [list]
  45                 foreach spec $trck_list {
  46                         set txt [lindex $spec 0]
  47                         regsub ^refs/(heads/|remotes/)? $txt {} txt
  48                         set trck_spec($txt) $spec
  49                         lappend nam $txt
  50                 }
  51                 set nam [lsort -unique $nam]
  52
  53                 radiobutton $w.trck_r \
  54                         -text {Tracking Branch:} \
  55                         -value trck \
  56                         -variable @revtype
  57                 eval tk_optionMenu $w.trck_m @c_trck $nam
  58                 grid $w.trck_r $w.trck_m -sticky w
  59
  60                 set c_trck [lindex $nam 0]
  61                 if {$revtype eq {}} {
  62                         set revtype trck
  63                 }
  64                 trace add variable @c_trck write [cb _select trck]
  65                 unset nam spec txt
  66         }
  67
  68         set all_tags [load_all_tags]
  69         if {$all_tags ne {}} {
  70                 set c_tag [lindex $all_tags 0]
  71                 radiobutton $w.tag_r \
  72                         -text {Tag:} \
  73                         -value tag \
  74                         -variable @revtype
  75                 eval tk_optionMenu $w.tag_m @c_tag $all_tags
  76                 grid $w.tag_r $w.tag_m -sticky w
  77                 if {$revtype eq {}} {
  78                         set revtype tag
  79                 }
  80                 trace add variable @c_tag write [cb _select tag]
  81         }
  82
  83         radiobutton $w.expr_r \
  84                 -text {Revision Expression:} \
  85                 -value expr \
  86                 -variable @revtype
  87         entry $w.expr_t \
  88                 -borderwidth 1 \
  89                 -relief sunken \
  90                 -width 50 \
  91                 -textvariable @c_expr \
  92                 -validate key \
  93                 -validatecommand [cb _validate %d %S]
  94         grid $w.expr_r $w.expr_t -sticky we -padx {0 5}
  95         if {$revtype eq {}} {
  96                 set revtype expr
  97         }
  98
  99         grid columnconfigure $w 1 -weight 1
 100         return $this
 101 }
 102
 103 method none {text} {
 104         if {[winfo exists $w.none_r]} {
 105                 $w.none_r configure -text $text
 106                 return
 107         }
 108
 109         radiobutton $w.none_r \
 110                 -anchor w \
 111                 -text $text \
 112                 -value none \
 113                 -variable @revtype
 114         grid $w.none_r -sticky we -padx {0 5} -columnspan 2
 115         if {$revtype eq {}} {
 116                 set revtype none
 117         }
 118 }
 119
 120 method get {} {
 121         switch -- $revtype {
 122         head { return $c_head }
 123         trck { return $c_trck }
 124         tag  { return $c_tag  }
 125         expr { return $c_expr }
 126         none { return {}      }
 127         default { error "unknown type of revision" }
 128         }
 129 }
 130
 131 method get_tracking_branch {} {
 132         if {$revtype eq {trck}} {
 133                 return $trck_spec($c_trck)
 134         } else {
 135                 return {}
 136         }
 137 }
 138
 139 method get_expr {} {
 140         switch -- $revtype {
 141         head { return refs/heads/$c_head             }
 142         trck { return [lindex $trck_spec($c_trck) 0] }
 143         tag  { return refs/tags/$c_tag               }
 144         expr { return $c_expr                        }
 145         none { return {}                             }
 146         default { error "unknown type of revision"   }
 147         }
 148 }
 149
 150 method get_commit {} {
 151         if {$revtype eq {none}} {
 152                 return {}
 153         }
 154         return [git rev-parse --verify "[get_expr $this]^0"]
 155 }
 156
 157 method _validate {d S} {
 158         if {$d == 1} {
 159                 if {[regexp {\s} $S]} {
 160                         return 0
 161                 }
 162                 if {[string length $S] > 0} {
 163                         set revtype expr
 164                 }
 165         }
 166         return 1
 167 }
 168
 169 method _select {value args} {
 170         set revtype $value
 171 }
 172
 173 method _delete {current} {
 174         if {$current eq $w} {
 175                 delete_this
 176         }
 177 }
 178
 179 }