lib/choose_rev.tcl

   1 # git-gui revision chooser
   2 # Copyright (C) 2006, 2007 Shawn Pearce
   3
   4 class choose_rev {
   5
   6 image create photo ::choose_rev::img_find -data {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}
   7
   8 field w               ; # our megawidget path
   9 field w_list          ; # list of currently filtered specs
  10 field w_filter        ; # filter entry for $w_list
  11
  12 field c_expr        {}; # current revision expression
  13 field filter          ; # current filter string
  14 field revtype     head; # type of revision chosen
  15 field cur_specs [list]; # list of specs for $revtype
  16 field spec_head       ; # list of all head specs
  17 field spec_trck       ; # list of all tracking branch specs
  18 field spec_tag        ; # list of all tag specs
  19
  20 constructor new {path {title {}}} {
  21         global all_heads current_branch
  22
  23         set w $path
  24
  25         if {$title ne {}} {
  26                 labelframe $w -text $title
  27         } else {
  28                 frame $w
  29         }
  30         bind $w <Destroy> [cb _delete %W]
  31
  32         radiobutton $w.expr_r \
  33                 -text {Revision Expression:} \
  34                 -value expr \
  35                 -variable @revtype
  36         entry $w.expr_t \
  37                 -borderwidth 1 \
  38                 -relief sunken \
  39                 -width 50 \
  40                 -textvariable @c_expr \
  41                 -validate key \
  42                 -validatecommand [cb _validate %d %S]
  43         grid $w.expr_r $w.expr_t -sticky we -padx {0 5}
  44
  45         frame $w.types
  46         radiobutton $w.types.head_r \
  47                 -text {Local Branch} \
  48                 -value head \
  49                 -variable @revtype
  50         pack $w.types.head_r -side left
  51         radiobutton $w.types.trck_r \
  52                 -text {Tracking Branch} \
  53                 -value trck \
  54                 -variable @revtype
  55         pack $w.types.trck_r -side left
  56         radiobutton $w.types.tag_r \
  57                 -text {Tag} \
  58                 -value tag \
  59                 -variable @revtype
  60         pack $w.types.tag_r -side left
  61         set w_filter $w.types.filter
  62         entry $w_filter \
  63                 -borderwidth 1 \
  64                 -relief sunken \
  65                 -width 12 \
  66                 -textvariable @filter \
  67                 -validate key \
  68                 -validatecommand [cb _filter %P]
  69         pack $w_filter -side right
  70         pack [label $w.types.filter_icon \
  71                 -image ::choose_rev::img_find \
  72                 ] -side right
  73         grid $w.types -sticky we -padx {0 5} -columnspan 2
  74
  75         frame $w.list
  76         set w_list $w.list.l
  77         listbox $w_list \
  78                 -font font_diff \
  79                 -width 50 \
  80                 -height 5 \
  81                 -selectmode browse \
  82                 -exportselection false \
  83                 -xscrollcommand [cb _sb_set $w.list.sbx h] \
  84                 -yscrollcommand [cb _sb_set $w.list.sby v]
  85         pack $w_list -fill both -expand 1
  86         grid $w.list -sticky nswe -padx {20 5} -columnspan 2
  87
  88         grid columnconfigure $w 1 -weight 1
  89         grid rowconfigure    $w 2 -weight 1
  90
  91         trace add variable @revtype write [cb _select]
  92         bind $w_filter <Key-Return> [list focus $w_list]\;break
  93         bind $w_filter <Key-Down>   [list focus $w_list]
  94
  95         set spec_head [list]
  96         foreach name $all_heads {
  97                 lappend spec_head [list $name refs/heads/$name]
  98         }
  99
 100         set spec_trck [list]
 101         foreach spec [all_tracking_branches] {
 102                 set name [lindex $spec 0]
 103                 regsub ^refs/(heads|remotes)/ $name {} name
 104                 lappend spec_trck [concat $name $spec]
 105         }
 106
 107         set spec_tag [list]
 108         foreach name [load_all_tags] {
 109                 lappend spec_tag [list $name refs/tags/$name]
 110         }
 111
 112               if {[llength $spec_head] > 0} { set revtype head
 113         } elseif {[llength $spec_trck] > 0} { set revtype trck
 114         } elseif {[llength $spec_tag ] > 0} { set revtype tag
 115         } else {                              set revtype expr
 116         }
 117
 118         if {$revtype eq {head} && $current_branch ne {}} {
 119                 set i 0
 120                 foreach spec $spec_head {
 121                         if {[lindex $spec 0] eq $current_branch} {
 122                                 $w_list selection set $i
 123                                 break
 124                         }
 125                         incr i
 126                 }
 127         }
 128
 129         return $this
 130 }
 131
 132 method none {text} {
 133         if {![winfo exists $w.none_r]} {
 134                 radiobutton $w.none_r \
 135                         -anchor w \
 136                         -value none \
 137                         -variable @revtype
 138                 grid $w.none_r -sticky we -padx {0 5} -columnspan 2
 139         }
 140         $w.none_r configure -text $text
 141 }
 142
 143 method get {} {
 144         switch -- $revtype {
 145         head -
 146         trck -
 147         tag  {
 148                 set i [$w_list curselection]
 149                 if {$i ne {}} {
 150                         return [lindex $cur_specs $i 0]
 151                 } else {
 152                         return {}
 153                 }
 154         }
 155
 156         expr { return $c_expr                  }
 157         none { return {}                       }
 158         default { error "unknown type of revision" }
 159         }
 160 }
 161
 162 method get_tracking_branch {} {
 163         set i [$w_list curselection]
 164         if {$i eq {} || $revtype ne {trck}} {
 165                 return {}
 166         }
 167         return [lrange [lindex $cur_specs $i] 1 end]
 168 }
 169
 170 method get_commit {} {
 171         set e [_expr $this]
 172         if {$e eq {}} {
 173                 return {}
 174         }
 175         return [git rev-parse --verify "$e^0"]
 176 }
 177
 178 method commit_or_die {} {
 179         if {[catch {set new [get_commit $this]} err]} {
 180
 181                 # Cleanup the not-so-friendly error from rev-parse.
 182                 #
 183                 regsub {^fatal:\s*} $err {} err
 184                 if {$err eq {Needed a single revision}} {
 185                         set err {}
 186                 }
 187
 188                 set top [winfo toplevel $w]
 189                 set msg "Invalid revision: [get $this]\n\n$err"
 190                 tk_messageBox \
 191                         -icon error \
 192                         -type ok \
 193                         -title [wm title $top] \
 194                         -parent $top \
 195                         -message $msg
 196                 error $msg
 197         }
 198         return $new
 199 }
 200
 201 method _expr {} {
 202         switch -- $revtype {
 203         head -
 204         trck -
 205         tag  {
 206                 set i [$w_list curselection]
 207                 if {$i ne {}} {
 208                         return [lindex $cur_specs $i 1]
 209                 } else {
 210                         error "No revision selected."
 211                 }
 212         }
 213
 214         expr {
 215                 if {$c_expr ne {}} {
 216                         return $c_expr
 217                 } else {
 218                         error "Revision expression is empty."
 219                 }
 220         }
 221         none { return {}                       }
 222         default { error "unknown type of revision"      }
 223         }
 224 }
 225
 226 method _validate {d S} {
 227         if {$d == 1} {
 228                 if {[regexp {\s} $S]} {
 229                         return 0
 230                 }
 231                 if {[string length $S] > 0} {
 232                         set revtype expr
 233                 }
 234         }
 235         return 1
 236 }
 237
 238 method _filter {P} {
 239         if {[regexp {\s} $P]} {
 240                 return 0
 241         }
 242         _rebuild $this $P
 243         return 1
 244 }
 245
 246 method _select {args} {
 247         _rebuild $this $filter
 248         if {[$w_filter cget -state] eq {normal}} {
 249                 focus $w_filter
 250         }
 251 }
 252
 253 method _rebuild {pat} {
 254         set ste normal
 255         switch -- $revtype {
 256         head { set new $spec_head }
 257         trck { set new $spec_trck }
 258         tag  { set new $spec_tag  }
 259         expr -
 260         none {
 261                 set new [list]
 262                 set ste disabled
 263         }
 264         }
 265
 266         if {[$w_list cget -state] eq {disabled}} {
 267                 $w_list configure -state normal
 268         }
 269         $w_list delete 0 end
 270
 271         if {$pat ne {}} {
 272                 set pat *${pat}*
 273         }
 274         set cur_specs [list]
 275         foreach spec $new {
 276                 set txt [lindex $spec 0]
 277                 if {$pat eq {} || [string match $pat $txt]} {
 278                         lappend cur_specs $spec
 279                         $w_list insert end $txt
 280                 }
 281         }
 282
 283         if {[$w_filter cget -state] ne $ste} {
 284                 $w_list   configure -state $ste
 285                 $w_filter configure -state $ste
 286         }
 287 }
 288
 289 method _delete {current} {
 290         if {$current eq $w} {
 291                 delete_this
 292         }
 293 }
 294
 295 method _sb_set {sb orient first last} {
 296         set old_focus [focus -lastfor $w]
 297
 298         if {$first == 0 && $last == 1} {
 299                 if {[winfo exists $sb]} {
 300                         destroy $sb
 301                         if {$old_focus ne {}} {
 302                                 update
 303                                 focus $old_focus
 304                         }
 305                 }
 306                 return
 307         }
 308
 309         if {![winfo exists $sb]} {
 310                 if {$orient eq {h}} {
 311                         scrollbar $sb -orient h -command [list $w_list xview]
 312                         pack $sb -fill x -side bottom -before $w_list
 313                 } else {
 314                         scrollbar $sb -orient v -command [list $w_list yview]
 315                         pack $sb -fill y -side right -before $w_list
 316                 }
 317                 if {$old_focus ne {}} {
 318                         update
 319                         focus $old_focus
 320                 }
 321         }
 322         $sb set $first $last
 323 }
 324
 325 }