Attachment "patch.diff" to
ticket [654976ffff]
added by
lukekalemyers
2003-01-01 11:33:18.
Index: tkchat.tcl
===================================================================
RCS file: /cvsroot/tcllib/tclapps/apps/tkchat/tkchat.tcl,v
retrieving revision 1.72
diff -r1.72 tkchat.tcl
1093a1094
> ::tkchat::find::on_content_change
1282a1284
> ::tkchat::find::on_content_change
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> ::tkchat::find::on_content_change
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> ::tkchat::find::on_content_change
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> ::tkchat::find::on_content_change
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> $m add command -label "Find" -underline 0 \
> -command "::tkchat::find::dialog .txt {}"
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> "^/find" {
> regexp -- {/find\s+(.*)} $msg 1 tkchat::find::find(string)
> tkchat::find::dialog .txt
> }
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> }
>
> ## Code to find and highlight patterns in the chat log window
> namespace eval ::tkchat::find {
> variable find
> set find(id) ""
> set find(break) 0
> set find(case) 0
> set find(regexp) 0
> set find(string) ""
> set find(startIndex) ""
> set find(last) ""
> }
>
> # ARGS: tag - tag to use when highlighting matches
> # t - text widget
> # yoff - ?
> proc ::tkchat::find::next {tag t {wmsg ""} {yoff ""}} {
>
> # if {[$t tag ranges $tag]==""} { winstderr $wmsg "No matches!"; return }
>
> if {$yoff==""} {
> # get y positon of last line of text
> set yoff [winfo height $t]
> # Should start at the beginning of that line
> set start [$t index @0,$yoff]
> # Unless there is a match in the visible area...
> if {[set prev [$t tag prevrange search @0,$yoff @0,0]]!=""} {
> # start searching just after the end of the last visible match
> set start [$t index [lsecond $prev]+1c]
> }
> } else {
> # If position specified, begin at specified position
> set start [$t index @0,$yoff]
> }
> # Get index of next hit
> set idx [$t tag nextrange $tag $start]
> # If no matches follow...
> if {$idx==""} {
> # Try again from beginning of text
> set idx [$t tag nextrange $tag 1.0]
> }
> if {$idx!=""} {
> $t mark set idx [lindex $idx 0]
> $t see idx
> }
>
> }
>
> # Move backwards through text, jumping between highlighted matches
> # ARGS: tag - tag to use when highlighting matches
> # t - text widget
> # yoff - ?
> proc ::tkchat::find::prev {tag t {wmsg ""}} {
>
> # if {[$t tag ranges $tag]==""} { winstderr $wmsg "No matches!"; return }
>
> # Get the start index of any matches beginning just previous of the first visible character
> set idx [$t tag prevrange $tag [$t index @0,0]]
> # If there are no previous matches...
> if {$idx==""} {
> # Try again from end of text (wrap around)
> set idx [$t tag prevrange $tag end]
> }
>
> if {$idx!=""} {
> $t mark set idx [lindex $idx 0]
> $t see idx
> }
> }
>
>
> ## ::tkchat::find::dialog - dialog interface to ::tkchat::find::find
> # ARGS: w - text widget
> # str - optional seed string for the search string
> ##
> proc ::tkchat::find::dialog {w {str {}}} {
>
> variable find
>
> # The pathname of the dialog toplevel
> set base .find
>
> # Create the dialog only if this procedure has not been called before
> # and the dialog does not yet exist.
> if {![winfo exists $base]} {
> toplevel $base
> wm withdraw $base
> wm transient $base .
> wm protocol $base WM_DELETE_WINDOW "wm withdraw $base"
> wm title $base "tkchat Find"
>
> pack [frame $base.f] -fill y -expand 1 -pady 5 -padx 5
> label $base.f.l -text "Find text:"
> entry $base.f.e \
> -textvariable ::tkchat::find::find(string) \
> -validate key \
> -vcmd { tkchat::find::on_GUI_change .txt } \
> -highlightthickness 0
> pack $base.f.l -side left
>
> pack [frame $base.opt] -fill y -expand 1 -padx 5
> checkbutton $base.opt.c -text "Case sensitive" \
> -variable ::tkchat::find::find(case) -underline 5 \
> -command {
> tkchat::find::on_GUI_change .txt
> }
>
> checkbutton $base.opt.r -text "Use regexp" \
> -variable ::tkchat::find::find(regexp) -underline 0 \
> -command {
> tkchat::find::on_GUI_change .txt
> }
>
> pack $base.f.e $base.opt.c $base.opt.r -side left -fill x -expand 1
>
> pack [frame $base.btn] -fill y -expand 1 -pady 5 -padx 5
> button $base.btn.prev -text "< Prev" -width 6 -underline 2
> button $base.btn.c -text "Close" -width 6 -underline 0
> button $base.btn.next -text "Next >" -width 6 -underline 0
> eval pack [winfo children $base.btn] -padx 9 \
> -side left
>
> # Keyboard Shortcuts
> bind $base <Alt-s> [list $base.opt.c invoke]
> bind $base <Alt-u> [list $base.opt.r invoke]
> bind $base <Alt-c> [list $base.btn.c invoke]
> bind $base <Alt-Left> "[list $base.btn.prev invoke]; break"
> bind $base <Alt-Right> "[list $base.btn.next invoke]; break"
> bind $base <Alt-p> "[list $base.btn.prev invoke]; break"
> bind $base <Alt-n> "[list $base.btn.next invoke]; break"
> bind $base <Alt-P> "[list $base.btn.prev invoke]; break"
> bind $base <Alt-N> "[list $base.btn.next invoke]; break"
> bind $base <Alt-Up> "[list $base.btn.prev invoke]; break"
> bind $base <Alt-Down> "[list $base.btn.next invoke]; break"
> bind $base <Up> "[list $base.btn.prev invoke]; break"
> bind $base <Down> "[list $base.btn.next invoke]; break"
> bind $base <Escape> [list $base.btn.c invoke]
> bind $base.f.e <Return> [list ::tkchat::find::on_GUI_change .txt]
>
> }
>
> # Reorganize bindings on entry so that Alt plus left and right do not move the cursor
> bindtags $base.f.e "$base $base.f.e Entry all"
>
> $base.btn.prev config \
> -command "
> ::tkchat::find::prev find .txt
> "
> $base.btn.c config \
> -command "
> after cancel \$::tkchat::find::find(id)
> set ::tkchat::find::find(break) 1
> # [list $w] tag remove find 1.0 end
> wm withdraw [list $base]
> "
> $base.btn.next config \
> -command "
> ::tkchat::find::next find .txt
> "
>
> if {[string compare normal [wm state $base]]} {
> wm deiconify $base
> } else { raise $base }
> $base.f.e select range 0 end
>
> on_GUI_change .txt
>
> focus $base.f.e
>
> }
>
> ## ::tkchat::find::on_GUI_change - updates highlighting when GUI is changed
> proc ::tkchat::find::on_GUI_change {w} {
> variable find
> after cancel $find(id)
> set find(break) 1
> set after_script "
> tkchat::find::find $w \$tkchat::find::find(string) \
> -case $tkchat::find::find(case) \
> -reg $tkchat::find::find(regexp)
> "
> set find(id) [after 500 $after_script]
> # Return 1 to tell entry to apply changes
> return 1
> }
>
> # Update highlighting to reflect any new matches
> proc ::tkchat::find::on_content_change {} {
> after idle {
> ::tkchat::find::find .txt $::tkchat::find::find(string) \
> -case $tkchat::find::find(case) \
> -reg $tkchat::find::find(regexp)
> }
> }
>
> ## ::tkchat::find::find - searches in text widget $w for $str and highlights it
> ## If $str is empty, it just deletes any highlighting
> # ARGS: w - text widget
> # str - string to search for
> # -case TCL_BOOLEAN whether to be case sensitive DEFAULT: 0
> # -regexp TCL_BOOLEAN whether to use $str as pattern DEFAULT: 0
> ##
> proc ::tkchat::find::find {w str args} {
>
> variable find
>
> set truth {^(1|yes|true|on)$}
> set opts {}
> set find(break) 0
>
> # Capture search string and options in a single variable
> set current $find(string)$find(case)$find(regexp)
>
> # If pattern or string is empty, or
> # if the search string and search options do not match the previous,
> # clear highlighting
> if {![string equal $find(startIndex) {}] && [string equal $current $find(last)]} {
> $w mark set findmark $find(startIndex)
> set find(startIndex) {}
> } {
> $w tag remove find 1.0 end
> $w mark set findmark 1.0
> }
>
> # If search string or regexp pattern is empty, return now
> if {[string match {} $str]} return
> foreach {key val} $args {
> switch -glob -- $key {
> -c* {
> if {[regexp -nocase $truth $val]} {
> set case 1
> }
> }
> -r* {
> if {[regexp -nocase $truth $val]} {
> lappend opts -regexp
>
> # Cam regexp pattern match the empty string?
> catch { regexp $str {} } res
>
> # If the result is an error message
> # or the pattern matched the empty string
> if { $res != 0 } {
> return
> }
> }
> }
> default {
> return -code error "Unknown option $key"
> }
> }
> }
>
> if {![info exists case]} { lappend opts -nocase }
>
> while {[string compare {} [set ix [eval $w search $opts -count numc -- \
> {$str} findmark end]]]} {
> $w tag add find $ix ${ix}+${numc}c
> $w mark set findmark ${ix}+1c
> # keep the gui alive during long running searches
> update
> if {$find(break)} {
> set find(startIndex) [$w index findmark]
> break
> }
> }
>
> set find(last) $current
> set find(startIndex) [$w index findmark]
> $w tag configure find -background orange
> return [expr {[llength [$w tag ranges find]]/2}]
>
