Add version 1.1
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# Toyed project news
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## [1.1] - 2023-01-06
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### Added
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* Prefix Lines feature
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* minimal documentation
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## [1.0] - 2022-12-27
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Initial release
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32
README.md
32
README.md
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# toyed
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# About ToyEd
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A toy text editor in Tcl/Tk for educational purposes.
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"A toy text editor in Tcl/Tk for educational purposes."
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ToyEd is a toy text editor made for fun and learning. It's not meant for serious use, but rather to be studied and built upon.
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ToyEd is written in 650 lines of Tcl/Tk (see below), but has many expected features:
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- GUI controls
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- keyboard operation
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- line and word count
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- formatting functions
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- display options
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ToyEd is open source under the MIT license. See source code:
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As of 6 January 2023, the code seems to work right, but hasn't really been tested. Please back up your data.
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The user interface should be fairly obvious.
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## System requirements
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Running ToyEd from source requires Tcl/Tk 8.5 or newer, with Tcllib and Tklib. Both are available on most Linux distributions, or else from the tcl-lang.org website.
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Recommended screen resolution: 800x600.
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## Credits and support
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ToyEd was born from the experience of developing Scrunch Edit TT, and reuses most code from it.
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You can usually find me on IRC, in the #ctrl-c channel of tilde.chat, or else as @notimetoplay on the elekk.xyz Mastodon instance. Would love to hear from you.
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#!/usr/bin/env tclsh
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#
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# ToyEd: a toy text editor for educational purposes in Tcl/Tk.
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# Copyright 2022 Felix Pleșoianu <https://felix.plesoianu.ro/>
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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package require Tcl 8.5
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package require Tk 8.5
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package require try
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package require getstring
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namespace import getstring::*
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set about_text "A toy text editor\nVersion 1.1 (6 Jan 2023)\nMIT License"
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set credits_text "Made by No Time To Play\nbased on knowledge\nfrom TkDocs.com"
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set site_link "https://ctrl-c.club/~nttp/toys/toyed/"
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set file_types {
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{"All files" ".*"}
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{"Text files" ".txt"}
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{"Markdown files" ".md"}
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}
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set file_name ""
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set search_term ""
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set _word_wrap 1
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namespace eval font_size {
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variable minimum 6
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variable default 11
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variable maximum 16
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namespace export increase decrease reset
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namespace ensemble create
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variable current $default
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proc increase {widget {family "Courier"}} {
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variable current
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variable maximum
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if {$current < $maximum} {
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incr current
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}
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$widget configure -font "$family $current"
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}
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proc decrease {widget {family "Courier"}} {
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variable current
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variable minimum
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if {$current > $minimum} {
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incr current -1
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}
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$widget configure -font "$family $current"
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}
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proc reset {widget {family "Courier"}} {
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variable current
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variable default
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set current $default
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$widget configure -font "$family $current"
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}
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}
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namespace eval tk_util {
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proc pack_scrolled widget {
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set parent [winfo parent $widget]
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if {$parent == "."} {
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set scroll .scroll
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} else {
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set scroll $parent.scroll
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}
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ttk::scrollbar $scroll -orient "vertical" \
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-command "$widget yview"
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pack $widget -side "left" -fill "both" -expand 1
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$widget configure -yscrollcommand "$scroll set"
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pack $scroll -side "right" -fill y
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}
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proc load_text {widget content} {
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$widget delete 1.0 end
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$widget insert end $content
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$widget edit reset
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$widget edit modified 0
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}
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proc text_selection widget {
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if {[llength [$widget tag ranges sel]] > 0} {
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return [$widget get sel.first sel.last]
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} else {
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return ""
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}
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}
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proc paste_content widget {
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if {[llength [$widget tag ranges sel]] > 0} {
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$widget delete sel.first sel.last
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}
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tk_textPaste $widget
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}
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proc select_all widget {
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$widget tag remove sel 1.0 end
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$widget tag add sel 1.0 end
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}
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proc highlight_text {widget content {start "1.0"}} {
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set idx [$widget search -nocase $content $start]
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if {$idx ne ""} {
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set len [string length $content]
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set pos "$idx +$len chars"
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$widget tag remove "sel" "1.0" "end"
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$widget tag add "sel" $idx $pos
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$widget mark set "insert" $pos
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$widget see "insert"
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focus $widget
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}
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return $idx
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}
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proc open_line widget {
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$widget insert "insert +0 chars" "\n"
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$widget mark set "insert" "insert -1 chars"
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}
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proc word_wrap widget {
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if {[$widget cget -wrap] eq "word"} {
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$widget configure -wrap "none"
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} else {
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$widget configure -wrap "word"
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}
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}
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proc full_screen window {
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if {[wm attributes $window -fullscreen]} {
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wm attributes $window -fullscreen 0
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} else {
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wm attributes $window -fullscreen 1
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}
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}
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}
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wm title . "ToyEd"
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option add *tearOff 0
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. configure -padx 4
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if {[tk windowingsystem] == "x11"} {
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ttk::style theme use "clam"
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}
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pack [ttk::frame .toolbar] -side top -pady 4
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ttk::frame .status
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ttk::label .status.line -relief sunken -textvar status
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ttk::sizegrip .status.grip
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pack .status -side bottom -fill x -pady 4
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pack .status.line -side left -fill x -expand 1
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pack .status.grip -side right -anchor s
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text .editor -width 80 -height 24 -wrap "word" -undo 1
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font_size::reset .editor
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tk_util::pack_scrolled .editor
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ttk::button .toolbar.new -text "New" -width 8 -under 0 -command do_new
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ttk::button .toolbar.bOpen -text "Open" -width 8 -under 0 -command do_open
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ttk::button .toolbar.save -text "Save" -width 8 -under 0 -command do_save
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ttk::separator .toolbar.sep1 -orient vertical
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ttk::button .toolbar.reload -text "Reload" -width 8 -under 0 -command do_reload
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ttk::button .toolbar.stats -text "Stats" -width 8 -under 1 -command show_stats
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ttk::separator .toolbar.sep2 -orient vertical
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ttk::button .toolbar.find -text "Find" -width 8 -under 0 -command do_find
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ttk::button .toolbar.again -text "Again" -width 8 -under 1 -command find_again
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pack .toolbar.new -side left
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pack .toolbar.bOpen -side left
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pack .toolbar.save -side left
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pack .toolbar.sep1 -side left -padx 4 -pady 4 -fill y
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pack .toolbar.reload -side left
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pack .toolbar.stats -side left
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pack .toolbar.sep2 -side left -padx 4 -pady 4 -fill y
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pack .toolbar.find -side left
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pack .toolbar.again -side left
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. configure -menu [menu .menubar]
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set m [menu .menubar.mFile]
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$m add command -label "New" -command do_new -under 0 -accel "Ctrl-N"
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$m add command -label "Open..." -command do_open -under 0 -accel "Ctrl-O"
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$m add command -label "Save" -command do_save -under 0 -accel "Ctrl-S"
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$m add separator
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$m add command -label "Save as..." -command do_save_as -under 5
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$m add command -label "Reload" -command do_reload -under 0 -accel "Ctrl-R"
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$m add command -label "Statistics" -command show_stats -under 1 -accel "Ctrl-T"
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$m add separator
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$m add command -label "Quit" -command do_quit -under 0 -accel "Ctrl-Q"
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.menubar add cascade -menu .menubar.mFile -label "File" -underline 0
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set m [menu .menubar.edit]
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$m add command -label "Undo" -command {.editor edit undo} \
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-underline 0 -accelerator "Ctrl-Z"
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$m add command -label "Redo" -command {.editor edit redo} \
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-underline 0 -accelerator "Ctrl-Y"
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$m add separator
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$m add command -label "Cut" -command {tk_textCut .editor} \
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-underline 0 -accelerator "Ctrl-X"
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$m add command -label "Copy" -command {tk_textCopy .editor} \
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-underline 1 -accelerator "Ctrl-C"
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$m add command -label "Paste" -command {tk_util::paste_content .editor} \
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-underline 0 -accelerator "Ctrl-V"
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$m add separator
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$m add command -label "Select all" -under 7 -accel "Ctrl-A" \
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-command {tk_util::select_all .editor; break}
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$m add command -label "Find..." -command do_find -under 0 -accel "Ctrl-F"
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$m add command -label "Again" -command find_again -under 1 -accel "Ctrl-G"
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.menubar add cascade -menu .menubar.edit -label "Edit" -underline 0
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set m [menu .menubar.mFormat]
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$m add command -label "Join lines" -command join_lines -under 0 -accel "Alt-J"
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$m add command -label "Open line" -under 0 -accel "Alt-O" \
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-command {tk_util::open_line .editor}
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$m add separator
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$m add command -label "Lower case" -command lower_case -under 0 -accel "Alt-L"
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$m add command -label "Title case" -command title_case -under 1 -accel "Alt-T"
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$m add command -label "Upper case" -command upper_case -under 0 -accel "Alt-U"
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$m add separator
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$m add command -label "Prefix lines..." -command prefix_lines \
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-under 0 -accel "Alt-P"
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.menubar add cascade -menu .menubar.mFormat -label "Format" -underline 3
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set m [menu .menubar.view]
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$m add checkbutton -label "Word wrap" -under 0 -var _word_wrap \
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-command {tk_util::word_wrap .editor}
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$m add separator
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$m add command -label "Bigger font" -under 0 -accel "Ctrl +" \
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-command {font_size incr .editor}
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$m add command -label "Smaller font" -under 0 -accel "Ctrl -" \
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-command {font_size decr .editor}
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$m add command -label "Reset font" -under 0 -accel "Ctrl-0" \
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-command {font_size reset .editor}
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$m add separator
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if {[llength [info commands "console"]] > 0} {
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$m add command -label "Console" -command {console show} \
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-underline 5 -accelerator "Ctrl-L"
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}
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$m add checkbutton -label "Full screen" -command {tk_util::full_screen .} \
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-underline 10 -accelerator "F11" -var _full_screen
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.menubar add cascade -menu .menubar.view -label "View" -underline 0
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set m [menu .menubar.help]
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$m add command -label "About" -command {alert $about_text} -under 0
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$m add command -label "Credits" -command {alert $credits_text} -under 0
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$m add command -label "Website" -command {open_in_app $site_link} -under 0
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.menubar add cascade -menu .menubar.help -label "Help" -underline 0
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wm protocol . WM_DELETE_WINDOW do_quit
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bind .editor <<Modified>> show_modified
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bind . <Control-n> do_new
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bind . <Control-o> do_open
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bind . <Control-s> do_save
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bind . <Control-r> do_reload
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bind . <Control-t> show_stats
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bind . <Control-q> do_quit
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bind . <Command-n> do_new
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bind . <Command-o> do_open
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bind . <Command-s> do_save
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bind . <Command-r> do_reload
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bind . <Command-t> show_stats
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bind . <Command-q> do_quit
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# Undo, cut and copy are already bound to their usual keys by default.
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# Many bindings here have to override broken defaults.
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bind .editor <Control-y> {.editor edit redo}
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bind .editor <Control-v> {tk_util::paste_content .editor; break}
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bind .editor <Control-a> {tk_util::select_all .editor; break}
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bind . <Control-f> do_find
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bind . <Control-g> find_again
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bind .editor <Command-y> {.editor edit redo}
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bind .editor <Command-v> {tk_util::paste_content .editor; break}
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bind .editor <Command-a> {tk_util::select_all .editor; break}
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bind . <Command-f> do_find
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bind . <Command-g> find_again
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bind Text <Control-o> {}
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bind .editor <Alt-j> join_lines
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bind .editor <Alt-o> {tk_util::open_line .editor; break}
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bind .editor <Alt-l> {lower_case; break}
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bind .editor <Alt-t> {title_case; break}
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bind .editor <Alt-u> upper_case
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bind .editor <Alt-p> prefix_lines
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bind . <Control-equal> {font_size::increase .editor}
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bind . <Control-minus> {font_size::decrease .editor}
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bind . <Control-Key-0> {font_size::reset .editor}
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bind . <Command-equal> {font_size::increase .editor}
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bind . <Command-minus> {font_size::decrease .editor}
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bind . <Command-Key-0> {font_size::reset .editor}
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bind . <F11> {tk_util::full_screen .}
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if {[llength [info commands "console"]] > 0} {
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bind . <Control-l> {console show}
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bind . <Command-l> {console show}
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}
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proc show_modified {} {
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global status
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if {[.editor edit modified]} {
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set status "(modified)"
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}
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}
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proc do_new {} {
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global status file_name
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if {[.editor edit modified]} {
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set answer [tk_messageBox -parent . \
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-type "yesno" -icon "question" \
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-title "ToyEd" \
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-message "New file?" \
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-detail "File is unsaved.\nStart another?"]
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if {!$answer} {
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set status "New file canceled."
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return
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}
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||||
}
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wm title . "ToyEd"
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set file_name ""
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.editor delete "1.0" "end"
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.editor edit reset
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.editor edit modified 0
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||||
set status [clock format [clock seconds]]
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||||
}
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||||
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||||
proc do_open {} {
|
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global status file_types file_name
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||||
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||||
if {[.editor edit modified]} {
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set answer [tk_messageBox -parent . \
|
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-type "yesno" -icon "question" \
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-title "ToyEd" \
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-message "Open another file?" \
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-detail "File is unsaved.\nOpen another?"]
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||||
if {!$answer} {
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set status "Opening canceled."
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return
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}
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||||
}
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set choice [tk_getOpenFile -parent . \
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-title "Open existing file" \
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-initialdir [file_dir $file_name] \
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-filetypes $file_types]
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if {[string length $choice] == 0} {
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set status "Opening canceled."
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} elseif {![file isfile $choice]} {
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||||
tk_messageBox -parent . \
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||||
-type "ok" -icon "error" \
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||||
-title "ToyEd" \
|
||||
-message "Error opening file" \
|
||||
-detail "File not found: $choice"
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||||
} elseif {[load_file $choice]} {
|
||||
set file_name $choice
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||||
}
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||||
}
|
||||
|
||||
proc load_file full_path {
|
||||
global status
|
||||
|
||||
set fn [file tail $full_path]
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||||
try {
|
||||
set f [open $full_path]
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||||
tk_util::load_text .editor [read $f]
|
||||
set status "Opened $fn"
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||||
wm title . "$fn | ToyEd"
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||||
return 1
|
||||
} on error e {
|
||||
tk_messageBox -parent . \
|
||||
-type "ok" -icon "error" \
|
||||
-title "ToyEd" \
|
||||
-message "Error opening file" \
|
||||
-detail $e
|
||||
return 0
|
||||
} finally {
|
||||
close $f
|
||||
}
|
||||
}
|
||||
|
||||
proc file_dir name {
|
||||
if {$name ne ""} {
|
||||
return [file dirname $name]
|
||||
} else {
|
||||
return [pwd]
|
||||
}
|
||||
}
|
||||
|
||||
proc do_save {} {
|
||||
global file_name
|
||||
if {$file_name eq ""} {
|
||||
do_save_as
|
||||
} else {
|
||||
save_file $file_name
|
||||
}
|
||||
}
|
||||
|
||||
proc do_save_as {} {
|
||||
global file_name file_types status
|
||||
|
||||
set choice [tk_getSaveFile -parent . \
|
||||
-title "Save file as..." \
|
||||
-initialdir [file_dir $file_name] \
|
||||
-filetypes $file_types]
|
||||
if {[string length $choice] == 0} {
|
||||
set status "Save canceled."
|
||||
} elseif {[save_file $choice]} {
|
||||
set file_name $choice
|
||||
}
|
||||
}
|
||||
|
||||
proc save_file full_path {
|
||||
global status
|
||||
|
||||
set fn [file tail $full_path]
|
||||
set data [.editor get "1.0" "end"]
|
||||
set data [string trimright $data "\n"]
|
||||
try {
|
||||
set f [open $full_path "w"]
|
||||
puts -nonewline $f "$data\n"
|
||||
flush $f
|
||||
set status "Saved $fn"
|
||||
wm title . "$fn | ToyEd"
|
||||
return 1
|
||||
} on error e {
|
||||
tk_messageBox -parent . \
|
||||
-type "ok" -icon "error" \
|
||||
-title "ToyEd" \
|
||||
-message "Error saving file" \
|
||||
-detail $e
|
||||
return 0
|
||||
} finally {
|
||||
close $f
|
||||
}
|
||||
}
|
||||
|
||||
proc do_reload {} {
|
||||
global file_name status
|
||||
if {$file_name eq ""} {
|
||||
tk_messageBox -parent . \
|
||||
-type "ok" -icon "warning" \
|
||||
-title "ToyEd" \
|
||||
-message "Can't reload." \
|
||||
-detail "The file was never saved."
|
||||
} else {
|
||||
set answer [tk_messageBox -parent . \
|
||||
-type "yesno" -icon "question" \
|
||||
-title "ToyEd" \
|
||||
-message "Reload file?" \
|
||||
-detail "Reload last save?"]
|
||||
if {$answer eq "yes"} {
|
||||
load_file $file_name
|
||||
} else {
|
||||
set status "Reloading canceled."
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
proc show_stats {} {
|
||||
set data [tk_util::text_selection .editor]
|
||||
if {$data eq ""} {
|
||||
set data [.editor get "1.0" "end"]
|
||||
set msg "File statistics"
|
||||
} else {
|
||||
set msg "Selection stats"
|
||||
}
|
||||
set clean [string trimright $data "\n"]
|
||||
set lines [llength [split $clean "\n"]]
|
||||
set words [regexp -all {\S+} $data]
|
||||
set chars [string length $data]
|
||||
set stats "Lines: $lines\nWords: $words\nCharacters: $chars"
|
||||
tk_messageBox -parent . \
|
||||
-type "ok" -icon "info" -title "ToyEd" \
|
||||
-message $msg -detail $stats
|
||||
}
|
||||
|
||||
proc do_quit {} {
|
||||
if {[.editor edit modified]} {
|
||||
set answer [tk_messageBox -parent . \
|
||||
-type "yesno" -icon "question" \
|
||||
-title "ToyEd" \
|
||||
-message "Quit ToyEd?" \
|
||||
-detail "File is unsaved.\nQuit anyway?"]
|
||||
} else {
|
||||
set answer "yes"
|
||||
}
|
||||
if {$answer eq "yes"} {
|
||||
destroy .
|
||||
}
|
||||
}
|
||||
|
||||
proc do_find {} {
|
||||
global search_term status
|
||||
set term [tk_util::text_selection .editor]
|
||||
set ret [tk_getString .gs answer "Search pattern:" \
|
||||
-title "Find" -entryoptions "-textvar search_term"]
|
||||
if {!$ret} {
|
||||
set status "Search canceled."
|
||||
return
|
||||
}
|
||||
set search_term $answer; # Possibly redundant
|
||||
step_search
|
||||
}
|
||||
|
||||
proc find_again {} {
|
||||
global search_term status
|
||||
if {$search_term eq ""} {
|
||||
do_find
|
||||
} else {
|
||||
step_search
|
||||
}
|
||||
}
|
||||
|
||||
proc step_search {} {
|
||||
global search_term status
|
||||
set res [tk_util::highlight_text .editor $search_term "insert"]
|
||||
if {$res eq ""} {
|
||||
set search_term ""
|
||||
set status "Nothing found."
|
||||
}
|
||||
}
|
||||
|
||||
proc join_lines {} {
|
||||
global status
|
||||
set t [tk_util::text_selection .editor]
|
||||
if {[string length $t] > 0} {
|
||||
set t [string map {"\n" " "} $t]
|
||||
.editor replace sel.first sel.last $t
|
||||
} else {
|
||||
set status "Nothing selected."
|
||||
}
|
||||
}
|
||||
|
||||
proc lower_case {} {
|
||||
global status
|
||||
set t [tk_util::text_selection .editor]
|
||||
if {[string length $t] > 0} {
|
||||
.editor replace sel.first sel.last [string tolower $t]
|
||||
} else {
|
||||
set status "Nothing selected."
|
||||
}
|
||||
}
|
||||
|
||||
proc title_case {} {
|
||||
global status
|
||||
set sel [tk_util::text_selection .editor]
|
||||
if {[string length $sel] > 0} {
|
||||
.editor replace sel.first sel.last [string totitle $sel]
|
||||
} else {
|
||||
set status "Nothing selected."
|
||||
}
|
||||
}
|
||||
|
||||
proc upper_case {} {
|
||||
global status
|
||||
set sel [tk_util::text_selection .editor]
|
||||
if {[string length $sel] > 0} {
|
||||
.editor replace sel.first sel.last [string toupper $sel]
|
||||
} else {
|
||||
set status "Nothing selected."
|
||||
}
|
||||
}
|
||||
|
||||
proc prefix_lines {} {
|
||||
global status
|
||||
set sel [tk_util::text_selection .editor]
|
||||
if {$sel eq ""} {
|
||||
set status "Nothing selected."
|
||||
return
|
||||
}
|
||||
set ret [tk_getString .gs answer "Prefix selected lines with:"]
|
||||
if {!$ret} {
|
||||
set status "Search canceled."
|
||||
return
|
||||
}
|
||||
set lines [split $sel "\n"]
|
||||
set result [list]
|
||||
foreach l $lines {
|
||||
lappend result $answer$l
|
||||
}
|
||||
.editor replace sel.first sel.last [join $result "\n"]
|
||||
}
|
||||
|
||||
proc alert message {
|
||||
tk_messageBox -parent . \
|
||||
-type "ok" -icon "info" \
|
||||
-title "ToyEd" \
|
||||
-message $message
|
||||
}
|
||||
|
||||
proc open_in_app link {
|
||||
global status
|
||||
if {[auto_execok "xdg-open"] ne ""} {
|
||||
catch {exec "xdg-open" $link &}
|
||||
} elseif {[auto_execok "open"] ne ""} {
|
||||
catch {exec "open" $link &}
|
||||
} elseif {[auto_execok "start"] ne ""} {
|
||||
catch {exec "start" $link &}
|
||||
} else {
|
||||
set status "Can't open website."
|
||||
}
|
||||
}
|
||||
|
||||
set status [clock format [clock seconds]]
|
||||
|
||||
if {[llength $argv] > 0} {
|
||||
set fn [lindex $argv 0]
|
||||
if {![file exists $fn]} {
|
||||
set file_name [file normalize $fn]
|
||||
set fn [file tail $file_name]
|
||||
wm title . "$fn | ToyEd"
|
||||
} elseif {[load_file $fn]} {
|
||||
set file_name [file normalize $fn]
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue