ask_for_hash_pair (JSONTreeView)

         # File lib/json/editor.rb, line 826
    826:       def ask_for_hash_pair(parent)
    827:         key_input = type_input = value_input = nil
    828:
    829:         dialog = Dialog.new("New (key, value) pair for Hash", nil, nil,
    830:           [ Stock::OK, Dialog::RESPONSE_ACCEPT ],
    831:           [ Stock::CANCEL, Dialog::RESPONSE_REJECT ]
    832:         )
    833:         dialog.width_request = 640
    834:
    835:         hbox = HBox.new(false, 5)
    836:         hbox.pack_start(Label.new("Key:"), false)
    837:         hbox.pack_start(key_input = Entry.new)
    838:         key_input.text = @key || ''
    839:         dialog.vbox.pack_start(hbox, false)
    840:         key_input.signal_connect(:activate) do
    841:           if parent.any? { |c| c.content == key_input.text }
    842:             toplevel.display_status('Key already exists in Hash!')
    843:             key_input.text = ''
    844:           else
    845:             toplevel.display_status('Key has been changed.')
    846:           end
    847:         end
    848:
    849:         hbox = HBox.new(false, 5)
    850:         hbox.pack_start(Label.new("Type:"), false)
    851:         hbox.pack_start(type_input = ComboBox.new(true))
    852:         ALL_TYPES.each { |t| type_input.append_text(t) }
    853:         type_input.active = @type || 0
    854:         dialog.vbox.pack_start(hbox, false)
    855:
    856:         type_input.signal_connect(:changed) do
    857:           value_input.editable = false
    858:           case ALL_TYPES[type_input.active]
    859:           when 'Array', 'Hash'
    860:             value_input.text = ''
    861:           when 'TrueClass'
    862:             value_input.text = 'true'
    863:           when 'FalseClass'
    864:             value_input.text = 'false'
    865:           when 'NilClass'
    866:             value_input.text = 'null'
    867:           else
    868:             value_input.text = ''
    869:             value_input.editable = true
    870:           end
    871:         end
    872:
    873:         hbox = HBox.new(false, 5)
    874:         hbox.pack_start(Label.new("Value:"), false)
    875:         hbox.pack_start(value_input = Entry.new)
    876:         value_input.width_chars = 60
    877:         value_input.text = @value || ''
    878:         dialog.vbox.pack_start(hbox, false)
    879:
    880:         dialog.signal_connect('key-press-event''key-press-event', &DEFAULT_DIALOG_KEY_PRESS_HANDLER)
    881:         dialog.show_all
    882:         self.focus = dialog
    883:         dialog.run do |response|
    884:           if response == Dialog::RESPONSE_ACCEPT
    885:             @key = key_input.text
    886:             type = ALL_TYPES[@type = type_input.active]
    887:             content = value_input.text
    888:             return @key, type, content
    889:           end
    890:         end
    891:         return
    892:       ensure
    893:         dialog.destroy
    894:       end