291 lines
6.4 KiB
Tcl
291 lines
6.4 KiB
Tcl
# incremental search panel
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# based on code from gitk, Copyright (C) Paul Mackerras
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class searchbar {
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field w
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field ctext
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field searchstring {}
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field regexpsearch
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field default_regexpsearch
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field casesensitive
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field default_casesensitive
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field smartcase
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field searchdirn -forwards
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field history
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field history_index
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field smarktop
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field smarkbot
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constructor new {i_w i_text args} {
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global use_ttk NS
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set w $i_w
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set ctext $i_text
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set default_regexpsearch [is_config_true gui.search.regexp]
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set smartcase [is_config_true gui.search.smartcase]
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if {$smartcase} {
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set default_casesensitive 0
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} else {
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set default_casesensitive 1
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}
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set history [list]
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${NS}::frame $w
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${NS}::label $w.l -text [mc Find:]
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tentry $w.ent -textvariable ${__this}::searchstring -background lightgreen
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${NS}::button $w.bn -text [mc Next] -command [cb find_next]
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${NS}::button $w.bp -text [mc Prev] -command [cb find_prev]
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${NS}::checkbutton $w.re -text [mc RegExp] \
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-variable ${__this}::regexpsearch -command [cb _incrsearch]
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${NS}::checkbutton $w.cs -text [mc Case] \
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-variable ${__this}::casesensitive -command [cb _incrsearch]
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pack $w.l -side left
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pack $w.cs -side right
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pack $w.re -side right
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pack $w.bp -side right
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pack $w.bn -side right
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pack $w.ent -side left -expand 1 -fill x
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eval grid conf $w -sticky we $args
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grid remove $w
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trace add variable searchstring write [cb _incrsearch_cb]
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bind $w.ent <Return> [cb find_next]
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bind $w.ent <Shift-Return> [cb find_prev]
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bind $w.ent <Key-Up> [cb _prev_search]
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bind $w.ent <Key-Down> [cb _next_search]
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bind $w <Destroy> [list delete_this $this]
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return $this
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}
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method show {} {
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if {![visible $this]} {
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grid $w
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$w.ent delete 0 end
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set regexpsearch $default_regexpsearch
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set casesensitive $default_casesensitive
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set history_index [llength $history]
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}
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focus -force $w.ent
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}
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method hide {} {
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if {[visible $this]} {
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focus $ctext
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grid remove $w
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_save_search $this
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}
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}
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method visible {} {
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return [winfo ismapped $w]
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}
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method editor {} {
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return $w.ent
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}
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method _get_new_anchor {} {
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# use start of selection if it is visible,
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# or the bounds of the visible area
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set top [$ctext index @0,0]
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set bottom [$ctext index @0,[winfo height $ctext]]
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set sel [$ctext tag ranges sel]
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if {$sel ne {}} {
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set spos [lindex $sel 0]
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if {[lindex $spos 0] >= [lindex $top 0] &&
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[lindex $spos 0] <= [lindex $bottom 0]} {
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return $spos
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}
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}
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if {$searchdirn eq "-forwards"} {
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return $top
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} else {
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return $bottom
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}
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}
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method _get_wrap_anchor {dir} {
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if {$dir eq "-forwards"} {
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return 1.0
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} else {
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return end
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}
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}
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method _do_search {start {mlenvar {}} {dir {}} {endbound {}}} {
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set cmd [list $ctext search]
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if {$mlenvar ne {}} {
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upvar $mlenvar mlen
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lappend cmd -count mlen
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}
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if {$regexpsearch} {
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lappend cmd -regexp
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}
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if {!$casesensitive} {
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lappend cmd -nocase
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}
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if {$dir eq {}} {
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set dir $searchdirn
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}
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lappend cmd $dir -- $searchstring
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if {[catch {
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if {$endbound ne {}} {
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set here [eval $cmd [list $start] [list $endbound]]
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} else {
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set here [eval $cmd [list $start]]
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if {$here eq {}} {
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set here [eval $cmd [_get_wrap_anchor $this $dir]]
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}
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}
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} err]} { set here {} }
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return $here
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}
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method _incrsearch_cb {name ix op} {
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after idle [cb _incrsearch]
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}
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method _incrsearch {} {
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$ctext tag remove found 1.0 end
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if {[catch {$ctext index anchor}]} {
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$ctext mark set anchor [_get_new_anchor $this]
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}
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if {$smartcase} {
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if {[regexp {[[:upper:]]} $searchstring]} {
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set casesensitive 1
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}
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}
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if {$searchstring ne {}} {
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set here [_do_search $this anchor mlen]
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if {$here ne {}} {
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$ctext see $here
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$ctext tag remove sel 1.0 end
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$ctext tag add sel $here "$here + $mlen c"
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#$w.ent configure -background lightgreen
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$w.ent state !pressed
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_set_marks $this 1
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} else {
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#$w.ent configure -background lightpink
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$w.ent state pressed
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}
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}
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}
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method _save_search {} {
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if {$searchstring eq {}} {
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return
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}
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if {[llength $history] > 0} {
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foreach {s_regexp s_case s_expr} [lindex $history end] break
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} else {
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set s_regexp $regexpsearch
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set s_case $casesensitive
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set s_expr ""
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}
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if {$searchstring eq $s_expr} {
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# update modes
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set history [lreplace $history end end \
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[list $regexpsearch $casesensitive $searchstring]]
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} else {
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lappend history [list $regexpsearch $casesensitive $searchstring]
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}
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set history_index [llength $history]
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}
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method _prev_search {} {
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if {$history_index > 0} {
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incr history_index -1
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foreach {s_regexp s_case s_expr} [lindex $history $history_index] break
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$w.ent delete 0 end
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$w.ent insert 0 $s_expr
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set regexpsearch $s_regexp
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set casesensitive $s_case
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}
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}
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method _next_search {} {
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if {$history_index < [llength $history]} {
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incr history_index
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}
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if {$history_index < [llength $history]} {
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foreach {s_regexp s_case s_expr} [lindex $history $history_index] break
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} else {
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set s_regexp $default_regexpsearch
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set s_case $default_casesensitive
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set s_expr ""
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}
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$w.ent delete 0 end
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$w.ent insert 0 $s_expr
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set regexpsearch $s_regexp
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set casesensitive $s_case
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}
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method find_prev {} {
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find_next $this -backwards
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}
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method find_next {{dir -forwards}} {
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focus $w.ent
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$w.ent icursor end
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set searchdirn $dir
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$ctext mark unset anchor
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if {$searchstring ne {}} {
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_save_search $this
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set start [_get_new_anchor $this]
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if {$dir eq "-forwards"} {
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set start "$start + 1c"
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}
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set match [_do_search $this $start mlen]
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$ctext tag remove sel 1.0 end
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if {$match ne {}} {
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$ctext see $match
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$ctext tag add sel $match "$match + $mlen c"
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}
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}
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}
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method _mark_range {first last} {
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set mend $first.0
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while {1} {
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set match [_do_search $this $mend mlen -forwards $last.end]
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if {$match eq {}} break
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set mend "$match + $mlen c"
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$ctext tag add found $match $mend
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}
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}
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method _set_marks {doall} {
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set topline [lindex [split [$ctext index @0,0] .] 0]
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set botline [lindex [split [$ctext index @0,[winfo height $ctext]] .] 0]
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if {$doall || $botline < $smarktop || $topline > $smarkbot} {
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# no overlap with previous
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_mark_range $this $topline $botline
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set smarktop $topline
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set smarkbot $botline
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} else {
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if {$topline < $smarktop} {
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_mark_range $this $topline [expr {$smarktop-1}]
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set smarktop $topline
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}
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if {$botline > $smarkbot} {
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_mark_range $this [expr {$smarkbot+1}] $botline
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set smarkbot $botline
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}
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}
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}
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method scrolled {} {
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if {$searchstring ne {}} {
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after idle [cb _set_marks 0]
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}
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}
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}
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