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Versions: 17
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Contents
module Ruco
class CommandBar
attr_accessor :cursor_line, :form
delegate :move, :delete, :insert, :to => :form
SHORTCUTS = [
'^W Exit',
'^S Save',
'^F Find',
'^D Delete line',
'^G Go to line'
]
def initialize(options)
@options = options
@forms_cache = {}
reset
end
def view
if @form
@form.view
else
available_shortcuts
end
end
def ask(question, options={}, &block)
@form = cached_form_if(options[:cache], question) do
Form.new(question, :columns => @options[:columns]) do |result|
@form = nil
block.call(result)
end
end
end
def reset
@forms_cache[@forms_cache.key(@form)] = nil
@form = nil
end
def cursor
if @form
Cursor.new cursor_line, @form.cursor.column
else
Cursor.new cursor_line, 0
end
end
private
def cached_form_if(cache, question)
if cache
@forms_cache[question] ||= yield
else
yield
end
end
def available_shortcuts
used_columns = 0
spacer = ' '
shortcuts_that_fit = SHORTCUTS.select do |shortcut|
used_columns += shortcut.size
it_fits = (used_columns <= @options[:columns])
used_columns += spacer.size
it_fits
end
shortcuts_that_fit * spacer
end
end
end
Version data entries
17 entries across 17 versions & 1 rubygems