lib/blame.tcl

   1 # git-gui blame viewer
   2 # Copyright (C) 2006, 2007 Shawn Pearce
   3
   4 class blame {
   5
   6 image create photo ::blame::img_back_arrow -data {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}
   7
   8 # Persistant data (survives loads)
   9 #
  10 field history {}; # viewer history: {commit path}
  11 field header    ; # array commit,key -> header field
  12
  13 # Tk UI control paths
  14 #
  15 field w          ; # top window in this viewer
  16 field w_back     ; # our back button
  17 field w_path     ; # label showing the current file path
  18 field w_columns  ; # list of all column widgets in the viewer
  19 field w_line     ; # text column: all line numbers
  20 field w_amov     ; # text column: annotations + move tracking
  21 field w_asim     ; # text column: annotations (simple computation)
  22 field w_file     ; # text column: actual file data
  23 field w_cviewer  ; # pane showing commit message
  24 field finder     ; # find mini-dialog frame
  25 field gotoline   ; # line goto mini-dialog frame
  26 field status     ; # status mega-widget instance
  27 field old_height ; # last known height of $w.file_pane
  28
  29
  30 # Tk UI colors
  31 #
  32 variable active_color #c0edc5
  33 variable group_colors {
  34         #d6d6d6
  35         #e1e1e1
  36         #ececec
  37 }
  38
  39 # Current blame data; cleared/reset on each load
  40 #
  41 field commit               ; # input commit to blame
  42 field path                 ; # input filename to view in $commit
  43
  44 field current_fd        {} ; # background process running
  45 field highlight_line    -1 ; # current line selected
  46 field highlight_column  {} ; # current commit column selected
  47 field highlight_commit  {} ; # sha1 of commit selected
  48
  49 field total_lines       0  ; # total length of file
  50 field blame_lines       0  ; # number of lines computed
  51 field amov_data            ; # list of {commit origfile origline}
  52 field asim_data            ; # list of {commit origfile origline}
  53
  54 field r_commit             ; # commit currently being parsed
  55 field r_orig_line          ; # original line number
  56 field r_final_line         ; # final line number
  57 field r_line_count         ; # lines in this region
  58
  59 field tooltip_wm        {} ; # Current tooltip toplevel, if open
  60 field tooltip_t         {} ; # Text widget in $tooltip_wm
  61 field tooltip_timer     {} ; # Current timer event for our tooltip
  62 field tooltip_commit    {} ; # Commit(s) in tooltip
  63
  64 constructor new {i_commit i_path i_jump} {
  65         global cursor_ptr M1B M1T have_tk85 use_ttk NS
  66         variable active_color
  67         variable group_colors
  68
  69         set commit $i_commit
  70         set path   $i_path
  71
  72         make_toplevel top w
  73         wm title $top [append "[appname] ([reponame]): " [mc "File Viewer"]]
  74
  75         set font_w [font measure font_diff "0"]
  76
  77         gold_frame $w.header
  78         tlabel $w.header.commit_l \
  79                 -text [mc "Commit:"] \
  80                 -background gold \
  81                 -foreground black \
  82                 -anchor w \
  83                 -justify left
  84         set w_back $w.header.commit_b
  85         tlabel $w_back \
  86                 -image ::blame::img_back_arrow \
  87                 -borderwidth 0 \
  88                 -relief flat \
  89                 -state disabled \
  90                 -background gold \
  91                 -foreground black \
  92                 -activebackground gold
  93         bind $w_back <Button-1> "
  94                 if {\[$w_back cget -state\] eq {normal}} {
  95                         [cb _history_menu]
  96                 }
  97                 "
  98         tlabel $w.header.commit \
  99                 -textvariable @commit \
 100                 -background gold \
 101                 -foreground black \
 102                 -anchor w \
 103                 -justify left
 104         tlabel $w.header.path_l \
 105                 -text [mc "File:"] \
 106                 -background gold \
 107                 -foreground black \
 108                 -anchor w \
 109                 -justify left
 110         set w_path $w.header.path
 111         tlabel $w_path \
 112                 -background gold \
 113                 -foreground black \
 114                 -anchor w \
 115                 -justify left
 116         pack $w.header.commit_l -side left
 117         pack $w_back -side left
 118         pack $w.header.commit -side left
 119         pack $w_path -fill x -side right
 120         pack $w.header.path_l -side right
 121
 122         panedwindow $w.file_pane -orient vertical -borderwidth 0 -sashwidth 3
 123         frame $w.file_pane.out -relief flat -borderwidth 1
 124         frame $w.file_pane.cm -relief sunken -borderwidth 1
 125         $w.file_pane add $w.file_pane.out \
 126                 -sticky nsew \
 127                 -minsize 100 \
 128                 -height 100 \
 129                 -width 100
 130         $w.file_pane add $w.file_pane.cm \
 131                 -sticky nsew \
 132                 -minsize 25 \
 133                 -height 25 \
 134                 -width 100
 135
 136         set w_line $w.file_pane.out.linenumber_t
 137         text $w_line \
 138                 -takefocus 0 \
 139                 -highlightthickness 0 \
 140                 -padx 0 -pady 0 \
 141                 -background white \
 142                 -foreground black \
 143                 -borderwidth 0 \
 144                 -state disabled \
 145                 -wrap none \
 146                 -height 40 \
 147                 -width 6 \
 148                 -font font_diff
 149         $w_line tag conf linenumber -justify right -rmargin 5
 150
 151         set w_amov $w.file_pane.out.amove_t
 152         text $w_amov \
 153                 -takefocus 0 \
 154                 -highlightthickness 0 \
 155                 -padx 0 -pady 0 \
 156                 -background white \
 157                 -foreground black \
 158                 -borderwidth 0 \
 159                 -state disabled \
 160                 -wrap none \
 161                 -height 40 \
 162                 -width 5 \
 163                 -font font_diff
 164         $w_amov tag conf author_abbr -justify right -rmargin 5
 165         $w_amov tag conf curr_commit
 166         $w_amov tag conf prior_commit -foreground blue -underline 1
 167         $w_amov tag bind prior_commit \
 168                 <Button-1> \
 169                 "[cb _load_commit $w_amov @amov_data @%x,%y];break"
 170
 171         set w_asim $w.file_pane.out.asimple_t
 172         text $w_asim \
 173                 -takefocus 0 \
 174                 -highlightthickness 0 \
 175                 -padx 0 -pady 0 \
 176                 -background white \
 177                 -foreground black \
 178                 -borderwidth 0 \
 179                 -state disabled \
 180                 -wrap none \
 181                 -height 40 \
 182                 -width 4 \
 183                 -font font_diff
 184         $w_asim tag conf author_abbr -justify right
 185         $w_asim tag conf curr_commit
 186         $w_asim tag conf prior_commit -foreground blue -underline 1
 187         $w_asim tag bind prior_commit \
 188                 <Button-1> \
 189                 "[cb _load_commit $w_asim @asim_data @%x,%y];break"
 190
 191         set w_file $w.file_pane.out.file_t
 192         text $w_file \
 193                 -takefocus 0 \
 194                 -highlightthickness 0 \
 195                 -padx 0 -pady 0 \
 196                 -background white \
 197                 -foreground black \
 198                 -borderwidth 0 \
 199                 -state disabled \
 200                 -wrap none \
 201                 -height 40 \
 202                 -width 80 \
 203                 -xscrollcommand [list $w.file_pane.out.sbx set] \
 204                 -font font_diff
 205         if {$have_tk85} {
 206                 $w_file configure -inactiveselectbackground darkblue
 207         }
 208         $w_file tag conf found \
 209                 -background yellow
 210
 211         set w_columns [list $w_amov $w_asim $w_line $w_file]
 212
 213         ${NS}::scrollbar $w.file_pane.out.sbx \
 214                 -orient h \
 215                 -command [list $w_file xview]
 216         ${NS}::scrollbar $w.file_pane.out.sby \
 217                 -orient v \
 218                 -command [list scrollbar2many $w_columns yview]
 219         eval grid $w_columns $w.file_pane.out.sby -sticky nsew
 220         grid conf \
 221                 $w.file_pane.out.sbx \
 222                 -column [expr {[llength $w_columns] - 1}] \
 223                 -sticky we
 224         grid columnconfigure \
 225                 $w.file_pane.out \
 226                 [expr {[llength $w_columns] - 1}] \
 227                 -weight 1
 228         grid rowconfigure $w.file_pane.out 0 -weight 1
 229
 230         set finder [::searchbar::new \
 231                 $w.file_pane.out.ff $w_file \
 232                 -column [expr {[llength $w_columns] - 1}] \
 233                 ]
 234
 235         set gotoline [::linebar::new \
 236                 $w.file_pane.out.lf $w_file \
 237                 -column [expr {[llength $w_columns] - 1}] \
 238                 ]
 239
 240         set w_cviewer $w.file_pane.cm.t
 241         text $w_cviewer \
 242                 -background white \
 243                 -foreground black \
 244                 -borderwidth 0 \
 245                 -state disabled \
 246                 -wrap none \
 247                 -height 10 \
 248                 -width 80 \
 249                 -xscrollcommand [list $w.file_pane.cm.sbx set] \
 250                 -yscrollcommand [list $w.file_pane.cm.sby set] \
 251                 -font font_diff
 252         $w_cviewer tag conf still_loading \
 253                 -font font_uiitalic \
 254                 -justify center
 255         $w_cviewer tag conf header_key \
 256                 -tabs {3c} \
 257                 -background $active_color \
 258                 -font font_uibold
 259         $w_cviewer tag conf header_val \
 260                 -background $active_color \
 261                 -font font_ui
 262         $w_cviewer tag raise sel
 263         ${NS}::scrollbar $w.file_pane.cm.sbx \
 264                 -orient h \
 265                 -command [list $w_cviewer xview]
 266         ${NS}::scrollbar $w.file_pane.cm.sby \
 267                 -orient v \
 268                 -command [list $w_cviewer yview]
 269         pack $w.file_pane.cm.sby -side right -fill y
 270         pack $w.file_pane.cm.sbx -side bottom -fill x
 271         pack $w_cviewer -expand 1 -fill both
 272
 273         set status [::status_bar::new $w.status]
 274
 275         menu $w.ctxm -tearoff 0
 276         $w.ctxm add command \
 277                 -label [mc "Copy Commit"] \
 278                 -command [cb _copycommit]
 279         $w.ctxm add separator
 280         $w.ctxm add command \
 281                 -label [mc "Find Text..."] \
 282                 -accelerator F7 \
 283                 -command [list searchbar::show $finder]
 284         $w.ctxm add command \
 285                 -label [mc "Goto Line..."] \
 286                 -accelerator "Ctrl-G" \
 287                 -command [list linebar::show $gotoline]
 288         menu $w.ctxm.enc
 289         build_encoding_menu $w.ctxm.enc [cb _setencoding]
 290         $w.ctxm add cascade \
 291                 -label [mc "Encoding"] \
 292                 -menu $w.ctxm.enc
 293         $w.ctxm add command \
 294                 -label [mc "Do Full Copy Detection"] \
 295                 -command [cb _fullcopyblame]
 296         $w.ctxm add separator
 297         $w.ctxm add command \
 298                 -label [mc "Show History Context"] \
 299                 -command [cb _gitkcommit]
 300         $w.ctxm add command \
 301                 -label [mc "Blame Parent Commit"] \
 302                 -command [cb _blameparent]
 303
 304         foreach i $w_columns {
 305                 for {set g 0} {$g < [llength $group_colors]} {incr g} {
 306                         $i tag conf color$g -background [lindex $group_colors $g]
 307                 }
 308
 309                 if {$i eq $w_file} {
 310                         $w_file tag raise found
 311                 }
 312                 $i tag raise sel
 313
 314                 $i conf -cursor $cursor_ptr
 315                 $i conf -yscrollcommand \
 316                         "[list ::searchbar::scrolled $finder]
 317                          [list many2scrollbar $w_columns yview $w.file_pane.out.sby]"
 318                 bind $i <Button-1> "
 319                         [cb _hide_tooltip]
 320                         [cb _click $i @%x,%y]
 321                         focus $i
 322                 "
 323                 bind $i <Any-Motion>  [cb _show_tooltip $i @%x,%y]
 324                 bind $i <Any-Enter>   [cb _hide_tooltip]
 325                 bind $i <Any-Leave>   [cb _hide_tooltip]
 326                 bind_button3 $i "
 327                         [cb _hide_tooltip]
 328                         set cursorX %x
 329                         set cursorY %y
 330                         set cursorW %W
 331                         tk_popup $w.ctxm %X %Y
 332                 "
 333                 bind $i <Shift-Tab> "[list focus $w_cviewer];break"
 334                 bind $i <Tab>       "[cb _focus_search $w_cviewer];break"
 335         }
 336
 337         foreach i [concat $w_columns $w_cviewer] {
 338                 bind $i <Key-Up>        {catch {%W yview scroll -1 units};break}
 339                 bind $i <Key-Down>      {catch {%W yview scroll  1 units};break}
 340                 bind $i <Key-Left>      {catch {%W xview scroll -1 units};break}
 341                 bind $i <Key-Right>     {catch {%W xview scroll  1 units};break}
 342                 bind $i <Key-k>         {catch {%W yview scroll -1 units};break}
 343                 bind $i <Key-j>         {catch {%W yview scroll  1 units};break}
 344                 bind $i <Key-h>         {catch {%W xview scroll -1 units};break}
 345                 bind $i <Key-l>         {catch {%W xview scroll  1 units};break}
 346                 bind $i <Control-Key-b> {catch {%W yview scroll -1 pages};break}
 347                 bind $i <Control-Key-f> {catch {%W yview scroll  1 pages};break}
 348         }
 349
 350         bind $w_cviewer <Shift-Tab> "[cb _focus_search $w_file];break"
 351         bind $w_cviewer <Tab>       "[list focus $w_file];break"
 352         bind $w_cviewer <Button-1>   [list focus $w_cviewer]
 353         bind $w_file    <Visibility> [cb _focus_search $w_file]
 354         bind $top       <F7>         [list searchbar::show $finder]
 355         bind $top       <Key-slash>  [list searchbar::show $finder]
 356         bind $top    <Control-Key-s> [list searchbar::show $finder]
 357         bind $top       <Escape>     [list searchbar::hide $finder]
 358         bind $top       <F3>         [list searchbar::find_next $finder]
 359         bind $top       <Key-n>      [list searchbar::find_next $finder]
 360         bind $top       <Shift-F3>   [list searchbar::find_prev $finder]
 361         bind $top    <Shift-Key-n>   [list searchbar::find_prev $finder]
 362         bind $top    <Control-Key-g> [list linebar::show $gotoline]
 363         catch { bind $top <Shift-Key-XF86_Switch_VT_3> [list searchbar::find_prev $finder] }
 364
 365         grid configure $w.header -sticky ew
 366         grid configure $w.file_pane -sticky nsew
 367         grid configure $w.status -sticky ew
 368         grid columnconfigure $top 0 -weight 1
 369         grid rowconfigure $top 0 -weight 0
 370         grid rowconfigure $top 1 -weight 1
 371         grid rowconfigure $top 2 -weight 0
 372
 373         set req_w [winfo reqwidth  $top]
 374         set req_h [winfo reqheight $top]
 375         set scr_w [expr {[winfo screenwidth $top] - 40}]
 376         set scr_h [expr {[winfo screenheight $top] - 120}]
 377         set opt_w [expr {$font_w * (80 + 5*3 + 3)}]
 378         if {$req_w < $opt_w} {set req_w $opt_w}
 379         if {$req_w > $scr_w} {set req_w $scr_w}
 380         set opt_h [expr {$req_w*4/3}]
 381         if {$req_h < $scr_h} {set req_h $scr_h}
 382         if {$req_h > $opt_h} {set req_h $opt_h}
 383         set g "${req_w}x${req_h}"
 384         wm geometry $top $g
 385         update
 386
 387         set old_height [winfo height $w.file_pane]
 388         $w.file_pane sash place 0 \
 389                 [lindex [$w.file_pane sash coord 0] 0] \
 390                 [expr {int($old_height * 0.80)}]
 391         bind $w.file_pane <Configure> \
 392         "if {{$w.file_pane} eq {%W}} {[cb _resize %h]}"
 393
 394         wm protocol $top WM_DELETE_WINDOW "destroy $top"
 395         bind $top <Destroy> [cb _handle_destroy %W]
 396
 397         _load $this $i_jump
 398 }
 399
 400 method _focus_search {win} {
 401         if {[searchbar::visible $finder]} {
 402                 focus [searchbar::editor $finder]
 403         } else {
 404                 focus $win
 405         }
 406 }
 407
 408 method _handle_destroy {win} {
 409         if {$win eq $w} {
 410                 _kill $this
 411                 delete_this
 412         }
 413 }
 414
 415 method _kill {} {
 416         if {$current_fd ne {}} {
 417                 kill_file_process $current_fd
 418                 catch {close $current_fd}
 419                 set current_fd {}
 420         }
 421 }
 422
 423 method _load {jump} {
 424         variable group_colors
 425
 426         _hide_tooltip $this
 427
 428         if {$total_lines != 0 || $current_fd ne {}} {
 429                 _kill $this
 430
 431                 foreach i $w_columns {
 432                         $i conf -state normal
 433                         $i delete 0.0 end
 434                         foreach g [$i tag names] {
 435                                 if {[regexp {^g[0-9a-f]{40}$} $g]} {
 436                                         $i tag delete $g
 437                                 }
 438                         }
 439                         $i conf -state disabled
 440                 }
 441
 442                 $w_cviewer conf -state normal
 443                 $w_cviewer delete 0.0 end
 444                 $w_cviewer conf -state disabled
 445
 446                 set highlight_line -1
 447                 set highlight_column {}
 448                 set highlight_commit {}
 449                 set total_lines 0
 450         }
 451
 452         if {$history eq {}} {
 453                 $w_back conf -state disabled
 454         } else {
 455                 $w_back conf -state normal
 456         }
 457
 458         # Index 0 is always empty.  There is never line 0 as
 459         # we use only 1 based lines, as that matches both with
 460         # git-blame output and with Tk's text widget.
 461         #
 462         set amov_data [list [list]]
 463         set asim_data [list [list]]
 464
 465         $status show [mc "Reading %s..." "$commit:[escape_path $path]"]
 466         $w_path conf -text [escape_path $path]
 467
 468         set do_textconv 0
 469         if {![is_config_false gui.textconv] && [git-version >= 1.7.2]} {
 470                 set filter [gitattr $path diff set]
 471                 set textconv [get_config [join [list diff $filter textconv] .]]
 472                 if {$filter ne {set} && $textconv ne {}} {
 473                         set do_textconv 1
 474                 }
 475         }
 476         if {$commit eq {}} {
 477                 if {$do_textconv ne 0} {
 478                         # Run textconv with sh -c "..." to allow it to
 479                         # contain command + arguments. On windows, just
 480                         # call the filter command.
 481                         if {![file executable [shellpath]]} {
 482                                 set fd [open |[linsert $textconv end $path] r]
 483                         } else {
 484                                 set fd [open |[list [shellpath] -c "$textconv \"\$0\"" $path] r]
 485                         }
 486                 } else {
 487                         set fd [open $path r]
 488                 }
 489                 fconfigure $fd -eofchar {}
 490         } else {
 491                 if {$do_textconv ne 0} {
 492                         set fd [git_read cat-file --textconv "$commit:$path"]
 493                 } else {
 494                         set fd [git_read cat-file blob "$commit:$path"]
 495                 }
 496         }
 497         fconfigure $fd \
 498                 -blocking 0 \
 499                 -translation lf \
 500                 -encoding [get_path_encoding $path]
 501         fileevent $fd readable [cb _read_file $fd $jump]
 502         set current_fd $fd
 503 }
 504
 505 method _history_menu {} {
 506         set m $w.backmenu
 507         if {[winfo exists $m]} {
 508                 $m delete 0 end
 509         } else {
 510                 menu $m -tearoff 0
 511         }
 512
 513         for {set i [expr {[llength $history] - 1}]
 514                 } {$i >= 0} {incr i -1} {
 515                 set e [lindex $history $i]
 516                 set c [lindex $e 0]
 517                 set f [lindex $e 1]
 518
 519                 if {[regexp {^[0-9a-f]{40}$} $c]} {
 520                         set t [string range $c 0 8]...
 521                 } elseif {$c eq {}} {
 522                         set t {Working Directory}
 523                 } else {
 524                         set t $c
 525                 }
 526                 if {![catch {set summary $header($c,summary)}]} {
 527                         append t " $summary"
 528                         if {[string length $t] > 70} {
 529                                 set t [string range $t 0 66]...
 530                         }
 531                 }
 532
 533                 $m add command -label $t -command [cb _goback $i]
 534         }
 535         set X [winfo rootx $w_back]
 536         set Y [expr {[winfo rooty $w_back] + [winfo height $w_back]}]
 537         tk_popup $m $X $Y
 538 }
 539
 540 method _goback {i} {
 541         set dat [lindex $history $i]
 542         set history [lrange $history 0 [expr {$i - 1}]]
 543         set commit [lindex $dat 0]
 544         set path [lindex $dat 1]
 545         _load $this [lrange $dat 2 5]
 546 }
 547
 548 method _read_file {fd jump} {
 549         if {$fd ne $current_fd} {
 550                 catch {close $fd}
 551                 return
 552         }
 553
 554         foreach i $w_columns {$i conf -state normal}
 555         while {[gets $fd line] >= 0} {
 556                 regsub "\r\$" $line {} line
 557                 incr total_lines
 558                 lappend amov_data {}
 559                 lappend asim_data {}
 560
 561                 if {$total_lines > 1} {
 562                         foreach i $w_columns {$i insert end "\n"}
 563                 }
 564
 565                 $w_line insert end "$total_lines" linenumber
 566                 $w_file insert end "$line"
 567         }
 568
 569         set ln_wc [expr {[string length $total_lines] + 2}]
 570         if {[$w_line cget -width] < $ln_wc} {
 571                 $w_line conf -width $ln_wc
 572         }
 573
 574         foreach i $w_columns {$i conf -state disabled}
 575
 576         if {[eof $fd]} {
 577                 close $fd
 578
 579                 # If we don't force Tk to update the widgets *right now*
 580                 # none of our jump commands will cause a change in the UI.
 581                 #
 582                 update
 583
 584                 if {[llength $jump] == 1} {
 585                         set highlight_line [lindex $jump 0]
 586                         $w_file see "$highlight_line.0"
 587                 } elseif {[llength $jump] == 4} {
 588                         set highlight_column [lindex $jump 0]
 589                         set highlight_line [lindex $jump 1]
 590                         $w_file xview moveto [lindex $jump 2]
 591                         $w_file yview moveto [lindex $jump 3]
 592                 }
 593
 594                 _exec_blame $this $w_asim @asim_data \
 595                         [list] \
 596                         [mc "Loading copy/move tracking annotations..."]
 597         }
 598 } ifdeleted { catch {close $fd} }
 599
 600 method _exec_blame {cur_w cur_d options cur_s} {
 601         lappend options --incremental --encoding=utf-8
 602         if {$commit eq {}} {
 603                 lappend options --contents $path
 604         } else {
 605                 lappend options $commit
 606         }
 607         lappend options -- $path
 608         set fd [eval git_read --nice blame $options]
 609         fconfigure $fd -blocking 0 -translation lf -encoding utf-8
 610         fileevent $fd readable [cb _read_blame $fd $cur_w $cur_d]
 611         set current_fd $fd
 612         set blame_lines 0
 613
 614         $status start \
 615                 $cur_s \
 616                 [mc "lines annotated"]
 617 }
 618
 619 method _read_blame {fd cur_w cur_d} {
 620         upvar #0 $cur_d line_data
 621         variable group_colors
 622
 623         if {$fd ne $current_fd} {
 624                 catch {close $fd}
 625                 return
 626         }
 627
 628         $cur_w conf -state normal
 629         while {[gets $fd line] >= 0} {
 630                 if {[regexp {^([a-z0-9]{40}) (\d+) (\d+) (\d+)$} $line line \
 631                         cmit original_line final_line line_count]} {
 632                         set r_commit     $cmit
 633                         set r_orig_line  $original_line
 634                         set r_final_line $final_line
 635                         set r_line_count $line_count
 636                 } elseif {[string match {filename *} $line]} {
 637                         set file [string range $line 9 end]
 638                         set n    $r_line_count
 639                         set lno  $r_final_line
 640                         set oln  $r_orig_line
 641                         set cmit $r_commit
 642
 643                         if {[regexp {^0{40}$} $cmit]} {
 644                                 set commit_abbr work
 645                                 set commit_type curr_commit
 646                         } elseif {$cmit eq $commit} {
 647                                 set commit_abbr this
 648                                 set commit_type curr_commit
 649                         } else {
 650                                 set commit_type prior_commit
 651                                 set commit_abbr [string range $cmit 0 3]
 652                         }
 653
 654                         set author_abbr {}
 655                         set a_name {}
 656                         catch {set a_name $header($cmit,author)}
 657                         while {$a_name ne {}} {
 658                                 if {$author_abbr ne {}
 659                                         && [string index $a_name 0] eq {'}} {
 660                                         regsub {^'[^']+'\s+} $a_name {} a_name
 661                                 }
 662                                 if {![regexp {^([[:upper:]])} $a_name _a]} break
 663                                 append author_abbr $_a
 664                                 unset _a
 665                                 if {![regsub \
 666                                         {^[[:upper:]][^\s]*\s+} \
 667                                         $a_name {} a_name ]} break
 668                         }
 669                         if {$author_abbr eq {}} {
 670                                 set author_abbr { |}
 671                         } else {
 672                                 set author_abbr [string range $author_abbr 0 3]
 673                         }
 674                         unset a_name
 675
 676                         set first_lno $lno
 677                         while {
 678                            $first_lno > 1
 679                         && $cmit eq [lindex $line_data [expr {$first_lno - 1}] 0]
 680                         && $file eq [lindex $line_data [expr {$first_lno - 1}] 1]
 681                         } {
 682                                 incr first_lno -1
 683                         }
 684
 685                         set color {}
 686                         if {$first_lno < $lno} {
 687                                 foreach g [$w_file tag names $first_lno.0] {
 688                                         if {[regexp {^color[0-9]+$} $g]} {
 689                                                 set color $g
 690                                                 break
 691                                         }
 692                                 }
 693                         } else {
 694                                 set i [lsort [concat \
 695                                         [$w_file tag names "[expr {$first_lno - 1}].0"] \
 696                                         [$w_file tag names "[expr {$lno + $n}].0"] \
 697                                         ]]
 698                                 for {set g 0} {$g < [llength $group_colors]} {incr g} {
 699                                         if {[lsearch -sorted -exact $i color$g] == -1} {
 700                                                 set color color$g
 701                                                 break
 702                                         }
 703                                 }
 704                         }
 705                         if {$color eq {}} {
 706                                 set color color0
 707                         }
 708
 709                         while {$n > 0} {
 710                                 set lno_e "$lno.0 lineend + 1c"
 711                                 if {[lindex $line_data $lno] ne {}} {
 712                                         set g [lindex $line_data $lno 0]
 713                                         foreach i $w_columns {
 714                                                 $i tag remove g$g $lno.0 $lno_e
 715                                         }
 716                                 }
 717                                 lset line_data $lno [list $cmit $file $oln]
 718
 719                                 $cur_w delete $lno.0 "$lno.0 lineend"
 720                                 if {$lno == $first_lno} {
 721                                         $cur_w insert $lno.0 $commit_abbr $commit_type
 722                                 } elseif {$lno == [expr {$first_lno + 1}]} {
 723                                         $cur_w insert $lno.0 $author_abbr author_abbr
 724                                 } else {
 725                                         $cur_w insert $lno.0 { |}
 726                                 }
 727
 728                                 foreach i $w_columns {
 729                                         if {$cur_w eq $w_amov} {
 730                                                 for {set g 0} \
 731                                                         {$g < [llength $group_colors]} \
 732                                                         {incr g} {
 733                                                         $i tag remove color$g $lno.0 $lno_e
 734                                                 }
 735                                                 $i tag add $color $lno.0 $lno_e
 736                                         }
 737                                         $i tag add g$cmit $lno.0 $lno_e
 738                                 }
 739
 740                                 if {$highlight_column eq $cur_w} {
 741                                         if {$highlight_line == -1
 742                                          && [lindex [$w_file yview] 0] == 0} {
 743                                                 $w_file see $lno.0
 744                                                 set highlight_line $lno
 745                                         }
 746                                         if {$highlight_line == $lno} {
 747                                                 _showcommit $this $cur_w $lno
 748                                         }
 749                                 }
 750
 751                                 incr n -1
 752                                 incr lno
 753                                 incr oln
 754                                 incr blame_lines
 755                         }
 756
 757                         while {
 758                            $cmit eq [lindex $line_data $lno 0]
 759                         && $file eq [lindex $line_data $lno 1]
 760                         } {
 761                                 $cur_w delete $lno.0 "$lno.0 lineend"
 762
 763                                 if {$lno == $first_lno} {
 764                                         $cur_w insert $lno.0 $commit_abbr $commit_type
 765                                 } elseif {$lno == [expr {$first_lno + 1}]} {
 766                                         $cur_w insert $lno.0 $author_abbr author_abbr
 767                                 } else {
 768                                         $cur_w insert $lno.0 { |}
 769                                 }
 770
 771                                 if {$cur_w eq $w_amov} {
 772                                         foreach i $w_columns {
 773                                                 for {set g 0} \
 774                                                         {$g < [llength $group_colors]} \
 775                                                         {incr g} {
 776                                                         $i tag remove color$g $lno.0 $lno_e
 777                                                 }
 778                                                 $i tag add $color $lno.0 $lno_e
 779                                         }
 780                                 }
 781
 782                                 incr lno
 783                         }
 784
 785                 } elseif {[regexp {^([a-z-]+) (.*)$} $line line key data]} {
 786                         set header($r_commit,$key) $data
 787                 }
 788         }
 789         $cur_w conf -state disabled
 790
 791         if {[eof $fd]} {
 792                 close $fd
 793                 if {$cur_w eq $w_asim} {
 794                         # Switches for original location detection
 795                         set threshold [get_config gui.copyblamethreshold]
 796                         set original_options [list "-C$threshold"]
 797
 798                         if {![is_config_true gui.fastcopyblame]} {
 799                                 # thorough copy search; insert before the threshold
 800                                 set original_options [linsert $original_options 0 -C]
 801                         }
 802                         if {[git-version >= 1.5.3]} {
 803                                 lappend original_options -w ; # ignore indentation changes
 804                         }
 805
 806                         _exec_blame $this $w_amov @amov_data \
 807                                 $original_options \
 808                                 [mc "Loading original location annotations..."]
 809                 } else {
 810                         set current_fd {}
 811                         $status stop [mc "Annotation complete."]
 812                 }
 813         } else {
 814                 $status update $blame_lines $total_lines
 815         }
 816 } ifdeleted { catch {close $fd} }
 817
 818 method _find_commit_bound {data_list start_idx delta} {
 819         upvar #0 $data_list line_data
 820         set pos $start_idx
 821         set limit       [expr {[llength $line_data] - 1}]
 822         set base_commit [lindex $line_data $pos 0]
 823
 824         while {$pos > 0 && $pos < $limit} {
 825                 set new_pos [expr {$pos + $delta}]
 826                 if {[lindex $line_data $new_pos 0] ne $base_commit} {
 827                         return $pos
 828                 }
 829
 830                 set pos $new_pos
 831         }
 832
 833         return $pos
 834 }
 835
 836 method _fullcopyblame {} {
 837         if {$current_fd ne {}} {
 838                 tk_messageBox \
 839                         -icon error \
 840                         -type ok \
 841                         -title [mc "Busy"] \
 842                         -message [mc "Annotation process is already running."]
 843
 844                 return
 845         }
 846
 847         # Switches for original location detection
 848         set threshold [get_config gui.copyblamethreshold]
 849         set original_options [list -C -C "-C$threshold"]
 850
 851         if {[git-version >= 1.5.3]} {
 852                 lappend original_options -w ; # ignore indentation changes
 853         }
 854
 855         # Find the line range
 856         set pos @$::cursorX,$::cursorY
 857         set lno [lindex [split [$::cursorW index $pos] .] 0]
 858         set min_amov_lno [_find_commit_bound $this @amov_data $lno -1]
 859         set max_amov_lno [_find_commit_bound $this @amov_data $lno 1]
 860         set min_asim_lno [_find_commit_bound $this @asim_data $lno -1]
 861         set max_asim_lno [_find_commit_bound $this @asim_data $lno 1]
 862
 863         if {$min_asim_lno < $min_amov_lno} {
 864                 set min_amov_lno $min_asim_lno
 865         }
 866
 867         if {$max_asim_lno > $max_amov_lno} {
 868                 set max_amov_lno $max_asim_lno
 869         }
 870
 871         lappend original_options -L "$min_amov_lno,$max_amov_lno"
 872
 873         # Clear lines
 874         for {set i $min_amov_lno} {$i <= $max_amov_lno} {incr i} {
 875                 lset amov_data $i [list ]
 876         }
 877
 878         # Start the back-end process
 879         _exec_blame $this $w_amov @amov_data \
 880                 $original_options \
 881                 [mc "Running thorough copy detection..."]
 882 }
 883
 884 method _click {cur_w pos} {
 885         set lno [lindex [split [$cur_w index $pos] .] 0]
 886         _showcommit $this $cur_w $lno
 887 }
 888
 889 method _setencoding {enc} {
 890         force_path_encoding $path $enc
 891         _load $this [list \
 892                 $highlight_column \
 893                 $highlight_line \
 894                 [lindex [$w_file xview] 0] \
 895                 [lindex [$w_file yview] 0] \
 896                 ]
 897 }
 898
 899 method _load_commit {cur_w cur_d pos} {
 900         upvar #0 $cur_d line_data
 901         set lno [lindex [split [$cur_w index $pos] .] 0]
 902         set dat [lindex $line_data $lno]
 903         if {$dat ne {}} {
 904                 _load_new_commit $this  \
 905                         [lindex $dat 0] \
 906                         [lindex $dat 1] \
 907                         [list [lindex $dat 2]]
 908         }
 909 }
 910
 911 method _load_new_commit {new_commit new_path jump} {
 912         lappend history [list \
 913                 $commit $path \
 914                 $highlight_column \
 915                 $highlight_line \
 916                 [lindex [$w_file xview] 0] \
 917                 [lindex [$w_file yview] 0] \
 918                 ]
 919
 920         set commit $new_commit
 921         set path   $new_path
 922         _load $this $jump
 923 }
 924
 925 method _showcommit {cur_w lno} {
 926         global repo_config
 927         variable active_color
 928
 929         if {$highlight_commit ne {}} {
 930                 foreach i $w_columns {
 931                         $i tag conf g$highlight_commit -background {}
 932                         $i tag lower g$highlight_commit
 933                 }
 934         }
 935
 936         if {$cur_w eq $w_asim} {
 937                 set dat [lindex $asim_data $lno]
 938                 set highlight_column $w_asim
 939         } else {
 940                 set dat [lindex $amov_data $lno]
 941                 set highlight_column $w_amov
 942         }
 943
 944         $w_cviewer conf -state normal
 945         $w_cviewer delete 0.0 end
 946
 947         if {$dat eq {}} {
 948                 set cmit {}
 949                 $w_cviewer insert end [mc "Loading annotation..."] still_loading
 950         } else {
 951                 set cmit [lindex $dat 0]
 952                 set file [lindex $dat 1]
 953
 954                 foreach i $w_columns {
 955                         $i tag conf g$cmit -background $active_color
 956                         $i tag raise g$cmit
 957                         if {$i eq $w_file} {
 958                                 $w_file tag raise found
 959                         }
 960                         $i tag raise sel
 961                 }
 962
 963                 set author_name {}
 964                 set author_email {}
 965                 set author_time {}
 966                 catch {set author_name $header($cmit,author)}
 967                 catch {set author_email $header($cmit,author-mail)}
 968                 catch {set author_time [format_date $header($cmit,author-time)]}
 969
 970                 set committer_name {}
 971                 set committer_email {}
 972                 set committer_time {}
 973                 catch {set committer_name $header($cmit,committer)}
 974                 catch {set committer_email $header($cmit,committer-mail)}
 975                 catch {set committer_time [format_date $header($cmit,committer-time)]}
 976
 977                 if {[catch {set msg $header($cmit,message)}]} {
 978                         set msg {}
 979                         catch {
 980                                 set fd [git_read cat-file commit $cmit]
 981                                 fconfigure $fd -encoding binary -translation lf
 982                                 # By default commits are assumed to be in utf-8
 983                                 set enc utf-8
 984                                 while {[gets $fd line] > 0} {
 985                                         if {[string match {encoding *} $line]} {
 986                                                 set enc [string tolower [string range $line 9 end]]
 987                                         }
 988                                 }
 989                                 set msg [read $fd]
 990                                 close $fd
 991
 992                                 set enc [tcl_encoding $enc]
 993                                 if {$enc ne {}} {
 994                                         set msg [encoding convertfrom $enc $msg]
 995                                 }
 996                                 set msg [string trim $msg]
 997                         }
 998                         set header($cmit,message) $msg
 999                 }
1000
1001                 $w_cviewer insert end "commit $cmit\n" header_key
1002                 $w_cviewer insert end [strcat [mc "Author:"] "\t"] header_key
1003                 $w_cviewer insert end "$author_name $author_email" header_val
1004                 $w_cviewer insert end "  $author_time\n" header_val
1005
1006                 $w_cviewer insert end [strcat [mc "Committer:"] "\t"] header_key
1007                 $w_cviewer insert end "$committer_name $committer_email" header_val
1008                 $w_cviewer insert end "  $committer_time\n" header_val
1009
1010                 if {$file ne $path} {
1011                         $w_cviewer insert end [strcat [mc "Original File:"] "\t"] header_key
1012                         $w_cviewer insert end "[escape_path $file]\n" header_val
1013                 }
1014
1015                 $w_cviewer insert end "\n$msg"
1016         }
1017         $w_cviewer conf -state disabled
1018
1019         set highlight_line $lno
1020         set highlight_commit $cmit
1021
1022         if {[lsearch -exact $tooltip_commit $highlight_commit] != -1} {
1023                 _hide_tooltip $this
1024         }
1025 }
1026
1027 method _get_click_amov_info {} {
1028         set pos @$::cursorX,$::cursorY
1029         set lno [lindex [split [$::cursorW index $pos] .] 0]
1030         return [lindex $amov_data $lno]
1031 }
1032
1033 method _copycommit {} {
1034         set dat [_get_click_amov_info $this]
1035         if {$dat ne {}} {
1036                 clipboard clear
1037                 clipboard append \
1038                         -format STRING \
1039                         -type STRING \
1040                         -- [lindex $dat 0]
1041         }
1042 }
1043
1044 method _format_offset_date {base offset} {
1045         set exval [expr {$base + $offset*24*60*60}]
1046         return [clock format $exval -format {%Y-%m-%d}]
1047 }
1048
1049 method _gitkcommit {} {
1050         global nullid
1051
1052         set dat [_get_click_amov_info $this]
1053         if {$dat ne {}} {
1054                 set cmit [lindex $dat 0]
1055
1056                 # If the line belongs to the working copy, use HEAD instead
1057                 if {$cmit eq $nullid} {
1058                         if {[catch {set cmit [git rev-parse --verify HEAD]} err]} {
1059                                 error_popup [strcat [mc "Cannot find HEAD commit:"] "\n\n$err"]
1060                                 return;
1061                         }
1062                 }
1063
1064                 set radius [get_config gui.blamehistoryctx]
1065                 set cmdline [list --select-commit=$cmit]
1066
1067                 if {$radius > 0} {
1068                         set author_time {}
1069                         set committer_time {}
1070
1071                         catch {set author_time $header($cmit,author-time)}
1072                         catch {set committer_time $header($cmit,committer-time)}
1073
1074                         if {$committer_time eq {}} {
1075                                 set committer_time $author_time
1076                         }
1077
1078                         set after_time [_format_offset_date $this $committer_time [expr {-$radius}]]
1079                         set before_time [_format_offset_date $this $committer_time $radius]
1080
1081                         lappend cmdline --after=$after_time --before=$before_time
1082                 }
1083
1084                 lappend cmdline $cmit
1085
1086                 set base_rev "HEAD"
1087                 if {$commit ne {}} {
1088                         set base_rev $commit
1089                 }
1090
1091                 if {$base_rev ne $cmit} {
1092                         lappend cmdline $base_rev
1093                 }
1094
1095                 do_gitk $cmdline
1096         }
1097 }
1098
1099 method _blameparent {} {
1100         global nullid
1101
1102         set dat [_get_click_amov_info $this]
1103         if {$dat ne {}} {
1104                 set cmit [lindex $dat 0]
1105                 set new_path [lindex $dat 1]
1106
1107                 # Allow using Blame Parent on lines modified in the working copy
1108                 if {$cmit eq $nullid} {
1109                         set parent_ref "HEAD"
1110                 } else {
1111                         set parent_ref "$cmit^"
1112                 }
1113                 if {[catch {set cparent [git rev-parse --verify $parent_ref]} err]} {
1114                         error_popup [strcat [mc "Cannot find parent commit:"] "\n\n$err"]
1115                         return;
1116                 }
1117
1118                 _kill $this
1119
1120                 # Generate a diff between the commit and its parent,
1121                 # and use the hunks to update the line number.
1122                 # Request zero context to simplify calculations.
1123                 if {$cmit eq $nullid} {
1124                         set diffcmd [list diff-index --unified=0 $cparent -- $new_path]
1125                 } else {
1126                         set diffcmd [list diff-tree --unified=0 $cparent $cmit -- $new_path]
1127                 }
1128                 if {[catch {set fd [eval git_read $diffcmd]} err]} {
1129                         $status stop [mc "Unable to display parent"]
1130                         error_popup [strcat [mc "Error loading diff:"] "\n\n$err"]
1131                         return
1132                 }
1133
1134                 set r_orig_line [lindex $dat 2]
1135
1136                 fconfigure $fd \
1137                         -blocking 0 \
1138                         -encoding binary \
1139                         -translation binary
1140                 fileevent $fd readable [cb _read_diff_load_commit \
1141                         $fd $cparent $new_path $r_orig_line]
1142                 set current_fd $fd
1143         }
1144 }
1145
1146 method _read_diff_load_commit {fd cparent new_path tline} {
1147         if {$fd ne $current_fd} {
1148                 catch {close $fd}
1149                 return
1150         }
1151
1152         while {[gets $fd line] >= 0} {
1153                 if {[regexp {^@@ -(\d+)(,(\d+))? \+(\d+)(,(\d+))? @@} $line line \
1154                         old_line osz old_size new_line nsz new_size]} {
1155
1156                         if {$osz eq {}} { set old_size 1 }
1157                         if {$nsz eq {}} { set new_size 1 }
1158
1159                         if {$new_line <= $tline} {
1160                                 if {[expr {$new_line + $new_size}] > $tline} {
1161                                         # Target line within the hunk
1162                                         set line_shift [expr {
1163                                                 ($new_size-$old_size)*($tline-$new_line)/$new_size
1164                                                 }]
1165                                 } else {
1166                                         set line_shift [expr {$new_size-$old_size}]
1167                                 }
1168
1169                                 set r_orig_line [expr {$r_orig_line - $line_shift}]
1170                         }
1171                 }
1172         }
1173
1174         if {[eof $fd]} {
1175                 close $fd;
1176                 set current_fd {}
1177
1178                 _load_new_commit $this  \
1179                         $cparent        \
1180                         $new_path       \
1181                         [list $r_orig_line]
1182         }
1183 } ifdeleted { catch {close $fd} }
1184
1185 method _show_tooltip {cur_w pos} {
1186         if {$tooltip_wm ne {}} {
1187                 _open_tooltip $this $cur_w
1188         } elseif {$tooltip_timer eq {}} {
1189                 set tooltip_timer [after 1000 [cb _open_tooltip $cur_w]]
1190         }
1191 }
1192
1193 method _open_tooltip {cur_w} {
1194         set tooltip_timer {}
1195         set pos_x [winfo pointerx $cur_w]
1196         set pos_y [winfo pointery $cur_w]
1197         if {[winfo containing $pos_x $pos_y] ne $cur_w} {
1198                 _hide_tooltip $this
1199                 return
1200         }
1201
1202         if {$tooltip_wm ne "$cur_w.tooltip"} {
1203                 _hide_tooltip $this
1204
1205                 set tooltip_wm [toplevel $cur_w.tooltip -borderwidth 1]
1206                 wm overrideredirect $tooltip_wm 1
1207                 wm transient $tooltip_wm [winfo toplevel $cur_w]
1208                 set tooltip_t $tooltip_wm.label
1209                 text $tooltip_t \
1210                         -takefocus 0 \
1211                         -highlightthickness 0 \
1212                         -relief flat \
1213                         -borderwidth 0 \
1214                         -wrap none \
1215                         -background lightyellow \
1216                         -foreground black
1217                 $tooltip_t tag conf section_header -font font_uibold
1218                 pack $tooltip_t
1219         } else {
1220                 $tooltip_t conf -state normal
1221                 $tooltip_t delete 0.0 end
1222         }
1223
1224         set pos @[join [list \
1225                 [expr {$pos_x - [winfo rootx $cur_w]}] \
1226                 [expr {$pos_y - [winfo rooty $cur_w]}]] ,]
1227         set lno [lindex [split [$cur_w index $pos] .] 0]
1228         if {$cur_w eq $w_amov} {
1229                 set dat [lindex $amov_data $lno]
1230                 set org {}
1231         } else {
1232                 set dat [lindex $asim_data $lno]
1233                 set org [lindex $amov_data $lno]
1234         }
1235
1236         if {$dat eq {}} {
1237                 _hide_tooltip $this
1238                 return
1239         }
1240
1241         set cmit [lindex $dat 0]
1242         set tooltip_commit [list $cmit]
1243
1244         set author_name {}
1245         set summary     {}
1246         set author_time {}
1247         catch {set author_name $header($cmit,author)}
1248         catch {set summary     $header($cmit,summary)}
1249         catch {set author_time [format_date $header($cmit,author-time)]}
1250
1251         $tooltip_t insert end "commit $cmit\n"
1252         $tooltip_t insert end "$author_name  $author_time\n"
1253         $tooltip_t insert end "$summary"
1254
1255         if {$org ne {} && [lindex $org 0] ne $cmit} {
1256                 set save [$tooltip_t get 0.0 end]
1257                 $tooltip_t delete 0.0 end
1258
1259                 set cmit [lindex $org 0]
1260                 set file [lindex $org 1]
1261                 lappend tooltip_commit $cmit
1262
1263                 set author_name {}
1264                 set summary     {}
1265                 set author_time {}
1266                 catch {set author_name $header($cmit,author)}
1267                 catch {set summary     $header($cmit,summary)}
1268                 catch {set author_time [format_date $header($cmit,author-time)]}
1269
1270                 $tooltip_t insert end [strcat [mc "Originally By:"] "\n"] section_header
1271                 $tooltip_t insert end "commit $cmit\n"
1272                 $tooltip_t insert end "$author_name  $author_time\n"
1273                 $tooltip_t insert end "$summary\n"
1274
1275                 if {$file ne $path} {
1276                         $tooltip_t insert end [strcat [mc "In File:"] " "] section_header
1277                         $tooltip_t insert end "$file\n"
1278                 }
1279
1280                 $tooltip_t insert end "\n"
1281                 $tooltip_t insert end [strcat [mc "Copied Or Moved Here By:"] "\n"] section_header
1282                 $tooltip_t insert end $save
1283         }
1284
1285         $tooltip_t conf -state disabled
1286         _position_tooltip $this
1287
1288         # On MacOS raising a window causes it to acquire focus.
1289         # Tk 8.5 on MacOS seems to properly support wm transient,
1290         # so we can safely counter the effect there.
1291         if {$::have_tk85 && [is_MacOSX]} {
1292                 update
1293                 if {$w eq {}} {
1294                         raise .
1295                 } else {
1296                         raise $w
1297                 }
1298         }
1299 }
1300
1301 method _position_tooltip {} {
1302         set max_h [lindex [split [$tooltip_t index end] .] 0]
1303         set max_w 0
1304         for {set i 1} {$i <= $max_h} {incr i} {
1305                 set c [lindex [split [$tooltip_t index "$i.0 lineend"] .] 1]
1306                 if {$c > $max_w} {set max_w $c}
1307         }
1308         $tooltip_t conf -width $max_w -height $max_h
1309
1310         set req_w [winfo reqwidth  $tooltip_t]
1311         set req_h [winfo reqheight $tooltip_t]
1312         set pos_x [expr {[winfo pointerx .] +  5}]
1313         set pos_y [expr {[winfo pointery .] + 10}]
1314
1315         set g "${req_w}x${req_h}"
1316         if {[tk windowingsystem] eq "win32" || $pos_x >= 0} {append g +}
1317         append g $pos_x
1318         if {[tk windowingsystem] eq "win32" || $pos_y >= 0} {append g +}
1319         append g $pos_y
1320
1321         wm geometry $tooltip_wm $g
1322         if {![is_MacOSX]} {
1323                 raise $tooltip_wm
1324         }
1325 }
1326
1327 method _hide_tooltip {} {
1328         if {$tooltip_wm ne {}} {
1329                 destroy $tooltip_wm
1330                 set tooltip_wm {}
1331                 set tooltip_commit {}
1332         }
1333         if {$tooltip_timer ne {}} {
1334                 after cancel $tooltip_timer
1335                 set tooltip_timer {}
1336         }
1337 }
1338
1339 method _resize {new_height} {
1340         set diff [expr {$new_height - $old_height}]
1341         if {$diff == 0} return
1342
1343         set my [expr {[winfo height $w.file_pane] - 25}]
1344         set o [$w.file_pane sash coord 0]
1345         set ox [lindex $o 0]
1346         set oy [expr {[lindex $o 1] + $diff}]
1347         if {$oy < 0}   {set oy 0}
1348         if {$oy > $my} {set oy $my}
1349         $w.file_pane sash place 0 $ox $oy
1350
1351         set old_height $new_height
1352 }
1353
1354 }