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 current_branch is_detached
  22
  23         set w $path
  24
  25         if {$title ne {}} {
  26                 labelframe $w -text $title
  27         } else {
  28                 frame $w
  29         }
  30         bind $w <Destroy> [cb _delete %W]
  31
  32         if {$is_detached} {
  33                 radiobutton $w.detachedhead_r \
  34                         -anchor w \
  35                         -text {This Detached Checkout} \
  36                         -value HEAD \
  37                         -variable @revtype
  38                 grid $w.detachedhead_r -sticky we -padx {0 5} -columnspan 2
  39         }
  40
  41         radiobutton $w.expr_r \
  42                 -text {Revision Expression:} \
  43                 -value expr \
  44                 -variable @revtype
  45         entry $w.expr_t \
  46                 -borderwidth 1 \
  47                 -relief sunken \
  48                 -width 50 \
  49                 -textvariable @c_expr \
  50                 -validate key \
  51                 -validatecommand [cb _validate %d %S]
  52         grid $w.expr_r $w.expr_t -sticky we -padx {0 5}
  53
  54         frame $w.types
  55         radiobutton $w.types.head_r \
  56                 -text {Local Branch} \
  57                 -value head \
  58                 -variable @revtype
  59         pack $w.types.head_r -side left
  60         radiobutton $w.types.trck_r \
  61                 -text {Tracking Branch} \
  62                 -value trck \
  63                 -variable @revtype
  64         pack $w.types.trck_r -side left
  65         radiobutton $w.types.tag_r \
  66                 -text {Tag} \
  67                 -value tag \
  68                 -variable @revtype
  69         pack $w.types.tag_r -side left
  70         set w_filter $w.types.filter
  71         entry $w_filter \
  72                 -borderwidth 1 \
  73                 -relief sunken \
  74                 -width 12 \
  75                 -textvariable @filter \
  76                 -validate key \
  77                 -validatecommand [cb _filter %P]
  78         pack $w_filter -side right
  79         pack [label $w.types.filter_icon \
  80                 -image ::choose_rev::img_find \
  81                 ] -side right
  82         grid $w.types -sticky we -padx {0 5} -columnspan 2
  83
  84         frame $w.list
  85         set w_list $w.list.l
  86         listbox $w_list \
  87                 -font font_diff \
  88                 -width 50 \
  89                 -height 10 \
  90                 -selectmode browse \
  91                 -exportselection false \
  92                 -xscrollcommand [cb _sb_set $w.list.sbx h] \
  93                 -yscrollcommand [cb _sb_set $w.list.sby v]
  94         pack $w_list -fill both -expand 1
  95         grid $w.list -sticky nswe -padx {20 5} -columnspan 2
  96
  97         grid columnconfigure $w 1 -weight 1
  98         if {$is_detached} {
  99                 grid rowconfigure $w 3 -weight 1
 100         } else {
 101                 grid rowconfigure $w 2 -weight 1
 102         }
 103
 104         trace add variable @revtype write [cb _select]
 105         bind $w_filter <Key-Return> [list focus $w_list]\;break
 106         bind $w_filter <Key-Down>   [list focus $w_list]
 107
 108         set spec_head [list]
 109         foreach name [load_all_heads] {
 110                 lappend spec_head [list $name refs/heads/$name]
 111         }
 112
 113         set spec_trck [list]
 114         foreach spec [all_tracking_branches] {
 115                 set name [lindex $spec 0]
 116                 regsub ^refs/(heads|remotes)/ $name {} name
 117                 lappend spec_trck [concat $name $spec]
 118         }
 119
 120         set spec_tag [list]
 121         foreach name [load_all_tags] {
 122                 lappend spec_tag [list $name refs/tags/$name]
 123         }
 124
 125                   if {$is_detached}             { set revtype HEAD
 126         } elseif {[llength $spec_head] > 0} { set revtype head
 127         } elseif {[llength $spec_trck] > 0} { set revtype trck
 128         } elseif {[llength $spec_tag ] > 0} { set revtype tag
 129         } else {                              set revtype expr
 130         }
 131
 132         if {$revtype eq {head} && $current_branch ne {}} {
 133                 set i 0
 134                 foreach spec $spec_head {
 135                         if {[lindex $spec 0] eq $current_branch} {
 136                                 $w_list selection clear 0 end
 137                                 $w_list selection set $i
 138                                 break
 139                         }
 140                         incr i
 141                 }
 142         }
 143
 144         return $this
 145 }
 146
 147 method none {text} {
 148         if {![winfo exists $w.none_r]} {
 149                 radiobutton $w.none_r \
 150                         -anchor w \
 151                         -value none \
 152                         -variable @revtype
 153                 grid $w.none_r -sticky we -padx {0 5} -columnspan 2
 154         }
 155         $w.none_r configure -text $text
 156 }
 157
 158 method get {} {
 159         switch -- $revtype {
 160         head -
 161         trck -
 162         tag  {
 163                 set i [$w_list curselection]
 164                 if {$i ne {}} {
 165                         return [lindex $cur_specs $i 0]
 166                 } else {
 167                         return {}
 168                 }
 169         }
 170
 171         HEAD { return HEAD                     }
 172         expr { return $c_expr                  }
 173         none { return {}                       }
 174         default { error "unknown type of revision" }
 175         }
 176 }
 177
 178 method pick_tracking_branch {} {
 179         set revtype trck
 180 }
 181
 182 method focus_filter {} {
 183         if {[$w_filter cget -state] eq {normal}} {
 184                 focus $w_filter
 185         }
 186 }
 187
 188 method bind_listbox {event script}  {
 189         bind $w_list $event $script
 190 }
 191
 192 method get_local_branch {} {
 193         if {$revtype eq {head}} {
 194                 return [_expr $this]
 195         } else {
 196                 return {}
 197         }
 198 }
 199
 200 method get_tracking_branch {} {
 201         set i [$w_list curselection]
 202         if {$i eq {} || $revtype ne {trck}} {
 203                 return {}
 204         }
 205         return [lrange [lindex $cur_specs $i] 1 end]
 206 }
 207
 208 method get_commit {} {
 209         set e [_expr $this]
 210         if {$e eq {}} {
 211                 return {}
 212         }
 213         return [git rev-parse --verify "$e^0"]
 214 }
 215
 216 method commit_or_die {} {
 217         if {[catch {set new [get_commit $this]} err]} {
 218
 219                 # Cleanup the not-so-friendly error from rev-parse.
 220                 #
 221                 regsub {^fatal:\s*} $err {} err
 222                 if {$err eq {Needed a single revision}} {
 223                         set err {}
 224                 }
 225
 226                 set top [winfo toplevel $w]
 227                 set msg "Invalid revision: [get $this]\n\n$err"
 228                 tk_messageBox \
 229                         -icon error \
 230                         -type ok \
 231                         -title [wm title $top] \
 232                         -parent $top \
 233                         -message $msg
 234                 error $msg
 235         }
 236         return $new
 237 }
 238
 239 method _expr {} {
 240         switch -- $revtype {
 241         head -
 242         trck -
 243         tag  {
 244                 set i [$w_list curselection]
 245                 if {$i ne {}} {
 246                         return [lindex $cur_specs $i 1]
 247                 } else {
 248                         error "No revision selected."
 249                 }
 250         }
 251
 252         expr {
 253                 if {$c_expr ne {}} {
 254                         return $c_expr
 255                 } else {
 256                         error "Revision expression is empty."
 257                 }
 258         }
 259         HEAD { return HEAD                     }
 260         none { return {}                       }
 261         default { error "unknown type of revision"      }
 262         }
 263 }
 264
 265 method _validate {d S} {
 266         if {$d == 1} {
 267                 if {[regexp {\s} $S]} {
 268                         return 0
 269                 }
 270                 if {[string length $S] > 0} {
 271                         set revtype expr
 272                 }
 273         }
 274         return 1
 275 }
 276
 277 method _filter {P} {
 278         if {[regexp {\s} $P]} {
 279                 return 0
 280         }
 281         _rebuild $this $P
 282         return 1
 283 }
 284
 285 method _select {args} {
 286         _rebuild $this $filter
 287         focus_filter $this
 288 }
 289
 290 method _rebuild {pat} {
 291         set ste normal
 292         switch -- $revtype {
 293         head { set new $spec_head }
 294         trck { set new $spec_trck }
 295         tag  { set new $spec_tag  }
 296         expr -
 297         HEAD -
 298         none {
 299                 set new [list]
 300                 set ste disabled
 301         }
 302         }
 303
 304         if {[$w_list cget -state] eq {disabled}} {
 305                 $w_list configure -state normal
 306         }
 307         $w_list delete 0 end
 308
 309         if {$pat ne {}} {
 310                 set pat *${pat}*
 311         }
 312         set cur_specs [list]
 313         foreach spec $new {
 314                 set txt [lindex $spec 0]
 315                 if {$pat eq {} || [string match $pat $txt]} {
 316                         lappend cur_specs $spec
 317                         $w_list insert end $txt
 318                 }
 319         }
 320         if {$cur_specs ne {}} {
 321                 $w_list selection clear 0 end
 322                 $w_list selection set 0
 323         }
 324
 325         if {[$w_filter cget -state] ne $ste} {
 326                 $w_list   configure -state $ste
 327                 $w_filter configure -state $ste
 328         }
 329 }
 330
 331 method _delete {current} {
 332         if {$current eq $w} {
 333                 delete_this
 334         }
 335 }
 336
 337 method _sb_set {sb orient first last} {
 338         set old_focus [focus -lastfor $w]
 339
 340         if {$first == 0 && $last == 1} {
 341                 if {[winfo exists $sb]} {
 342                         destroy $sb
 343                         if {$old_focus ne {}} {
 344                                 update
 345                                 focus $old_focus
 346                         }
 347                 }
 348                 return
 349         }
 350
 351         if {![winfo exists $sb]} {
 352                 if {$orient eq {h}} {
 353                         scrollbar $sb -orient h -command [list $w_list xview]
 354                         pack $sb -fill x -side bottom -before $w_list
 355                 } else {
 356                         scrollbar $sb -orient v -command [list $w_list yview]
 357                         pack $sb -fill y -side right -before $w_list
 358                 }
 359                 if {$old_focus ne {}} {
 360                         update
 361                         focus $old_focus
 362                 }
 363         }
 364         $sb set $first $last
 365 }
 366
 367 }