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-rw-r--r--git-gui/lib/choose_rev.tcl367
1 files changed, 367 insertions, 0 deletions
diff --git a/git-gui/lib/choose_rev.tcl b/git-gui/lib/choose_rev.tcl
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+++ b/git-gui/lib/choose_rev.tcl
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+# git-gui revision chooser
+# Copyright (C) 2006, 2007 Shawn Pearce
+
+class choose_rev {
+
+image create photo ::choose_rev::img_find -data {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}
+
+field w ; # our megawidget path
+field w_list ; # list of currently filtered specs
+field w_filter ; # filter entry for $w_list
+
+field c_expr {}; # current revision expression
+field filter ; # current filter string
+field revtype head; # type of revision chosen
+field cur_specs [list]; # list of specs for $revtype
+field spec_head ; # list of all head specs
+field spec_trck ; # list of all tracking branch specs
+field spec_tag ; # list of all tag specs
+
+constructor new {path {title {}}} {
+ global current_branch is_detached
+
+ set w $path
+
+ if {$title ne {}} {
+ labelframe $w -text $title
+ } else {
+ frame $w
+ }
+ bind $w <Destroy> [cb _delete %W]
+
+ if {$is_detached} {
+ radiobutton $w.detachedhead_r \
+ -anchor w \
+ -text {This Detached Checkout} \
+ -value HEAD \
+ -variable @revtype
+ grid $w.detachedhead_r -sticky we -padx {0 5} -columnspan 2
+ }
+
+ radiobutton $w.expr_r \
+ -text {Revision Expression:} \
+ -value expr \
+ -variable @revtype
+ entry $w.expr_t \
+ -borderwidth 1 \
+ -relief sunken \
+ -width 50 \
+ -textvariable @c_expr \
+ -validate key \
+ -validatecommand [cb _validate %d %S]
+ grid $w.expr_r $w.expr_t -sticky we -padx {0 5}
+
+ frame $w.types
+ radiobutton $w.types.head_r \
+ -text {Local Branch} \
+ -value head \
+ -variable @revtype
+ pack $w.types.head_r -side left
+ radiobutton $w.types.trck_r \
+ -text {Tracking Branch} \
+ -value trck \
+ -variable @revtype
+ pack $w.types.trck_r -side left
+ radiobutton $w.types.tag_r \
+ -text {Tag} \
+ -value tag \
+ -variable @revtype
+ pack $w.types.tag_r -side left
+ set w_filter $w.types.filter
+ entry $w_filter \
+ -borderwidth 1 \
+ -relief sunken \
+ -width 12 \
+ -textvariable @filter \
+ -validate key \
+ -validatecommand [cb _filter %P]
+ pack $w_filter -side right
+ pack [label $w.types.filter_icon \
+ -image ::choose_rev::img_find \
+ ] -side right
+ grid $w.types -sticky we -padx {0 5} -columnspan 2
+
+ frame $w.list
+ set w_list $w.list.l
+ listbox $w_list \
+ -font font_diff \
+ -width 50 \
+ -height 5 \
+ -selectmode browse \
+ -exportselection false \
+ -xscrollcommand [cb _sb_set $w.list.sbx h] \
+ -yscrollcommand [cb _sb_set $w.list.sby v]
+ pack $w_list -fill both -expand 1
+ grid $w.list -sticky nswe -padx {20 5} -columnspan 2
+
+ grid columnconfigure $w 1 -weight 1
+ if {$is_detached} {
+ grid rowconfigure $w 3 -weight 1
+ } else {
+ grid rowconfigure $w 2 -weight 1
+ }
+
+ trace add variable @revtype write [cb _select]
+ bind $w_filter <Key-Return> [list focus $w_list]\;break
+ bind $w_filter <Key-Down> [list focus $w_list]
+
+ set spec_head [list]
+ foreach name [load_all_heads] {
+ lappend spec_head [list $name refs/heads/$name]
+ }
+
+ set spec_trck [list]
+ foreach spec [all_tracking_branches] {
+ set name [lindex $spec 0]
+ regsub ^refs/(heads|remotes)/ $name {} name
+ lappend spec_trck [concat $name $spec]
+ }
+
+ set spec_tag [list]
+ foreach name [load_all_tags] {
+ lappend spec_tag [list $name refs/tags/$name]
+ }
+
+ if {$is_detached} { set revtype HEAD
+ } elseif {[llength $spec_head] > 0} { set revtype head
+ } elseif {[llength $spec_trck] > 0} { set revtype trck
+ } elseif {[llength $spec_tag ] > 0} { set revtype tag
+ } else { set revtype expr
+ }
+
+ if {$revtype eq {head} && $current_branch ne {}} {
+ set i 0
+ foreach spec $spec_head {
+ if {[lindex $spec 0] eq $current_branch} {
+ $w_list selection clear 0 end
+ $w_list selection set $i
+ break
+ }
+ incr i
+ }
+ }
+
+ return $this
+}
+
+method none {text} {
+ if {![winfo exists $w.none_r]} {
+ radiobutton $w.none_r \
+ -anchor w \
+ -value none \
+ -variable @revtype
+ grid $w.none_r -sticky we -padx {0 5} -columnspan 2
+ }
+ $w.none_r configure -text $text
+}
+
+method get {} {
+ switch -- $revtype {
+ head -
+ trck -
+ tag {
+ set i [$w_list curselection]
+ if {$i ne {}} {
+ return [lindex $cur_specs $i 0]
+ } else {
+ return {}
+ }
+ }
+
+ HEAD { return HEAD }
+ expr { return $c_expr }
+ none { return {} }
+ default { error "unknown type of revision" }
+ }
+}
+
+method pick_tracking_branch {} {
+ set revtype trck
+}
+
+method focus_filter {} {
+ if {[$w_filter cget -state] eq {normal}} {
+ focus $w_filter
+ }
+}
+
+method bind_listbox {event script} {
+ bind $w_list $event $script
+}
+
+method get_local_branch {} {
+ if {$revtype eq {head}} {
+ return [_expr $this]
+ } else {
+ return {}
+ }
+}
+
+method get_tracking_branch {} {
+ set i [$w_list curselection]
+ if {$i eq {} || $revtype ne {trck}} {
+ return {}
+ }
+ return [lrange [lindex $cur_specs $i] 1 end]
+}
+
+method get_commit {} {
+ set e [_expr $this]
+ if {$e eq {}} {
+ return {}
+ }
+ return [git rev-parse --verify "$e^0"]
+}
+
+method commit_or_die {} {
+ if {[catch {set new [get_commit $this]} err]} {
+
+ # Cleanup the not-so-friendly error from rev-parse.
+ #
+ regsub {^fatal:\s*} $err {} err
+ if {$err eq {Needed a single revision}} {
+ set err {}
+ }
+
+ set top [winfo toplevel $w]
+ set msg "Invalid revision: [get $this]\n\n$err"
+ tk_messageBox \
+ -icon error \
+ -type ok \
+ -title [wm title $top] \
+ -parent $top \
+ -message $msg
+ error $msg
+ }
+ return $new
+}
+
+method _expr {} {
+ switch -- $revtype {
+ head -
+ trck -
+ tag {
+ set i [$w_list curselection]
+ if {$i ne {}} {
+ return [lindex $cur_specs $i 1]
+ } else {
+ error "No revision selected."
+ }
+ }
+
+ expr {
+ if {$c_expr ne {}} {
+ return $c_expr
+ } else {
+ error "Revision expression is empty."
+ }
+ }
+ HEAD { return HEAD }
+ none { return {} }
+ default { error "unknown type of revision" }
+ }
+}
+
+method _validate {d S} {
+ if {$d == 1} {
+ if {[regexp {\s} $S]} {
+ return 0
+ }
+ if {[string length $S] > 0} {
+ set revtype expr
+ }
+ }
+ return 1
+}
+
+method _filter {P} {
+ if {[regexp {\s} $P]} {
+ return 0
+ }
+ _rebuild $this $P
+ return 1
+}
+
+method _select {args} {
+ _rebuild $this $filter
+ focus_filter $this
+}
+
+method _rebuild {pat} {
+ set ste normal
+ switch -- $revtype {
+ head { set new $spec_head }
+ trck { set new $spec_trck }
+ tag { set new $spec_tag }
+ expr -
+ HEAD -
+ none {
+ set new [list]
+ set ste disabled
+ }
+ }
+
+ if {[$w_list cget -state] eq {disabled}} {
+ $w_list configure -state normal
+ }
+ $w_list delete 0 end
+
+ if {$pat ne {}} {
+ set pat *${pat}*
+ }
+ set cur_specs [list]
+ foreach spec $new {
+ set txt [lindex $spec 0]
+ if {$pat eq {} || [string match $pat $txt]} {
+ lappend cur_specs $spec
+ $w_list insert end $txt
+ }
+ }
+ if {$cur_specs ne {}} {
+ $w_list selection clear 0 end
+ $w_list selection set 0
+ }
+
+ if {[$w_filter cget -state] ne $ste} {
+ $w_list configure -state $ste
+ $w_filter configure -state $ste
+ }
+}
+
+method _delete {current} {
+ if {$current eq $w} {
+ delete_this
+ }
+}
+
+method _sb_set {sb orient first last} {
+ set old_focus [focus -lastfor $w]
+
+ if {$first == 0 && $last == 1} {
+ if {[winfo exists $sb]} {
+ destroy $sb
+ if {$old_focus ne {}} {
+ update
+ focus $old_focus
+ }
+ }
+ return
+ }
+
+ if {![winfo exists $sb]} {
+ if {$orient eq {h}} {
+ scrollbar $sb -orient h -command [list $w_list xview]
+ pack $sb -fill x -side bottom -before $w_list
+ } else {
+ scrollbar $sb -orient v -command [list $w_list yview]
+ pack $sb -fill y -side right -before $w_list
+ }
+ if {$old_focus ne {}} {
+ update
+ focus $old_focus
+ }
+ }
+ $sb set $first $last
+}
+
+}