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Diffstat (limited to 'git-gui/lib/search.tcl')
| -rw-r--r-- | git-gui/lib/search.tcl | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/git-gui/lib/search.tcl b/git-gui/lib/search.tcl new file mode 100644 index 0000000..b371e9a --- /dev/null +++ b/git-gui/lib/search.tcl @@ -0,0 +1,198 @@ +# incremental search panel +# based on code from gitk, Copyright (C) Paul Mackerras + +class searchbar { + +field w +field ctext + +field searchstring {} +field casesensitive 1 +field searchdirn -forwards + +field smarktop +field smarkbot + +constructor new {i_w i_text args} { + set w $i_w + set ctext $i_text + + frame $w + label $w.l -text [mc Find:] + entry $w.ent -textvariable ${__this}::searchstring -background lightgreen + button $w.bn -text [mc Next] -command [cb find_next] + button $w.bp -text [mc Prev] -command [cb find_prev] + checkbutton $w.cs -text [mc Case-Sensitive] \ + -variable ${__this}::casesensitive -command [cb _incrsearch] + pack $w.l -side left + pack $w.cs -side right + pack $w.bp -side right + pack $w.bn -side right + pack $w.ent -side left -expand 1 -fill x + + eval grid conf $w -sticky we $args + grid remove $w + + trace add variable searchstring write [cb _incrsearch_cb] + + bind $w <Destroy> [list delete_this $this] + return $this +} + +method show {} { + if {![visible $this]} { + grid $w + } + focus -force $w.ent +} + +method hide {} { + if {[visible $this]} { + focus $ctext + grid remove $w + } +} + +method visible {} { + return [winfo ismapped $w] +} + +method editor {} { + return $w.ent +} + +method _get_new_anchor {} { + # use start of selection if it is visible, + # or the bounds of the visible area + set top [$ctext index @0,0] + set bottom [$ctext index @0,[winfo height $ctext]] + set sel [$ctext tag ranges sel] + if {$sel ne {}} { + set spos [lindex $sel 0] + if {[lindex $spos 0] >= [lindex $top 0] && + [lindex $spos 0] <= [lindex $bottom 0]} { + return $spos + } + } + if {$searchdirn eq "-forwards"} { + return $top + } else { + return $bottom + } +} + +method _get_wrap_anchor {dir} { + if {$dir eq "-forwards"} { + return 1.0 + } else { + return end + } +} + +method _do_search {start {mlenvar {}} {dir {}} {endbound {}}} { + set cmd [list $ctext search] + if {$mlenvar ne {}} { + upvar $mlenvar mlen + lappend cmd -count mlen + } + if {!$casesensitive} { + lappend cmd -nocase + } + if {$dir eq {}} { + set dir $searchdirn + } + lappend cmd $dir -- $searchstring + if {$endbound ne {}} { + set here [eval $cmd [list $start] [list $endbound]] + } else { + set here [eval $cmd [list $start]] + if {$here eq {}} { + set here [eval $cmd [_get_wrap_anchor $this $dir]] + } + } + return $here +} + +method _incrsearch_cb {name ix op} { + after idle [cb _incrsearch] +} + +method _incrsearch {} { + $ctext tag remove found 1.0 end + if {[catch {$ctext index anchor}]} { + $ctext mark set anchor [_get_new_anchor $this] + } + if {$searchstring ne {}} { + set here [_do_search $this anchor mlen] + if {$here ne {}} { + $ctext see $here + $ctext tag remove sel 1.0 end + $ctext tag add sel $here "$here + $mlen c" + $w.ent configure -background lightgreen + _set_marks $this 1 + } else { + $w.ent configure -background lightpink + } + } +} + +method find_prev {} { + find_next $this -backwards +} + +method find_next {{dir -forwards}} { + focus $w.ent + $w.ent icursor end + set searchdirn $dir + $ctext mark unset anchor + if {$searchstring ne {}} { + set start [_get_new_anchor $this] + if {$dir eq "-forwards"} { + set start "$start + 1c" + } + set match [_do_search $this $start mlen] + $ctext tag remove sel 1.0 end + if {$match ne {}} { + $ctext see $match + $ctext tag add sel $match "$match + $mlen c" + } + } +} + +method _mark_range {first last} { + set mend $first.0 + while {1} { + set match [_do_search $this $mend mlen -forwards $last.end] + if {$match eq {}} break + set mend "$match + $mlen c" + $ctext tag add found $match $mend + } +} + +method _set_marks {doall} { + set topline [lindex [split [$ctext index @0,0] .] 0] + set botline [lindex [split [$ctext index @0,[winfo height $ctext]] .] 0] + if {$doall || $botline < $smarktop || $topline > $smarkbot} { + # no overlap with previous + _mark_range $this $topline $botline + set smarktop $topline + set smarkbot $botline + } else { + if {$topline < $smarktop} { + _mark_range $this $topline [expr {$smarktop-1}] + set smarktop $topline + } + if {$botline > $smarkbot} { + _mark_range $this [expr {$smarkbot+1}] $botline + set smarkbot $botline + } + } +} + +method scrolled {} { + if {$searchstring ne {}} { + after idle [cb _set_marks 0] + } +} + +}
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