samples/hello/hello_entry.rb
# Copyright (c) 2020-2022 Andy Maleh
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
require 'glimmer-dsl-tk'
class HelloEntry
include Glimmer
attr_accessor :default, :password, :telephone, :read_only
def initialize
self.default = 'default'
self.password = 'password'
self.telephone = '555-555-5555'
self.read_only = 'Telephone area code is 555'
end
def launch
root {
title 'Hello, Entry!'
minsize 230, 0
label {
grid sticky: 'ew'
text 'default entry'
}
entry { |the_entry|
grid sticky: 'ew'
text <=> [self, :default]
}
label {
grid sticky: 'ew'
text 'password entry'
}
entry {
grid sticky: 'ew'
show '*'
text <=> [self, :password]
}
@validated_entry_label = label {
grid sticky: 'ew'
text 'entry with event handlers'
}
entry { |the_entry|
grid sticky: 'ew'
text <=> [self, :telephone]
# validate 'key' # default when on('validate') or on('invalid') is specified
## Validation happens on key change by default when validation listeners are specified
## (other accepted values: 'none', 'focus', 'focusin', 'focusout', 'key', or 'all')
## this event kicks in just after the user typed and before modifying the text variable
on('validate') do |new_text_variable|
telephone?(new_text_variable.value)
end
## this event kicks in just after the text variable is validated and before it is modified
on('invalid') do |validate_args|
@validated_entry_label.text = "#{validate_args.value} is not a valid phone!"
@validated_entry_label.foreground = 'red'
end
## this event kicks in just after the text variable is validated and modified
on('change') do |new_text_variable|
self.read_only = "Telephone area code is #{new_text_variable.value.gsub(/[^0-9]/, '')[0...3]}"
@validated_entry_label.text = 'entry with event handlers'
@validated_entry_label.foreground = nil
end
## this is similar to on('change') (which is Glimmer-specific), but more low level at the Tk level
## it is the equivalent of calling: the_entry.tk.textvariable.trace('write') { puts "..." }
## More at: https://tkdocs.com/tutorial/widgets.html#entry and https://tcl.tk/man/tcl8.6/TclCmd/trace.htm#M14
on_textvariable('write') do
puts "\"#{the_entry.text}\" has been written to entry!"
end
}
label {
grid sticky: 'ew'
text 'read-only entry'
}
entry {
grid sticky: 'ew'
text <=> [self, :read_only]
readonly true
}
}.open
end
def telephone?(text)
!!text.match(/^\d{0,3}[-.\/]?\d{0,3}[-.\/]?\d{0,4}$/)
end
end
HelloEntry.new.launch