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term::interact::menu(n)                       Terminal control                       term::interact::menu(n)



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NAME
       term::interact::menu - Terminal widget, menu

SYNOPSIS
       package require Tcl  8.4

       package require term::interact::menu  ?0.1?

       term::interact::menu object dict ?options...?

       object interact

       object done

       object clear

       object configure

       object configure option

       object configure option value...

       object cget option

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DESCRIPTION
       This package provides a class for the creation of a simple menu control.

CLASS API
       The package exports a single command, the class command, enabling the creation of menu instances. Its
       API is:

       term::interact::menu object dict ?options...?
              This command creates a new menu object with the name object, initializes it, and  returns  the
              fully qualified name of the object command as its result.

              The argument is the menu to show, possibly followed by configuration options and their values.
              The options are explained in the section Configuration. The menu is a dictionary maping labels
              to symbolic action codes.


OBJECT API
       The objects created by the class command provide the methods listed below:

       object interact
              Shows  the  menu in the screen at the configured location and starts interacting with it. This
              opens its own event loop for the processing of incoming characters. The  method  returns  when
              the  interaction  has  completed.  See  section  Interaction for a description of the possible
              interaction.

              The method returns the symbolic action of the menu item selected by the user at the end of the
              interaction.

       object done
              This method can be used by user supplied actions to terminate the interaction with the object.

       object clear
              This method can be used by user supplied actions to remove the menu from the terminal.

       object configure

       object configure option

       object configure option value...

       object cget option
              Standard methods to retrieve and configure the options of the menu.


CONFIGURATION
       A menu instance recognizes the following options:

       -in chan
              Specifies the channel to read character sequences from. Defaults to stdin.

       -out chan
              Specifies the channel to write the menu contents to. Defaults to stdout.

       -column int
              Specifies the column of the terminal where the left margin of the menu display should  appear.
              Defaults to 0, i.e. the left-most column.

       -line int
              Specifies  the  line  of  the terminal where the top margin of the menu display should appear.
              Defaults to 0, i.e. the top-most line.

       -height int
              Specifies the number of lines of text to show at most in the display. Defaults to 25.

       -actions dict
              Specifies a dictionary containing additional actions, using character sequences as keys.  Note
              that these sequences cannot override the hardwired sequences described in section Interaction.

       -hilitleft int

       -hilitright int
              By default the entire selected menu entry is  highlighted  in  revers  output.  However,  when
              present these two options restrict revers dispay to the specified sub-range of the entry.

       -framed bool
              By  default  the menu is shown using only header and footer out of characters box graphics. If
              this flag is set the menu is fully enclosed in a box.


INTERACTION
       A menu object recognizes the control sequences listed below and acts as described. The user can  sup-ply supply
       ply  more  control  sequences  to  act  on  via  the  configuration, but is not able to overide these
       defaults.

       Cursor Up
              The selection is moved up one entry, except  if  the  first  entry  of  the  menu  is  already
              selected.

       Cursor Down
              The  selection  is  moved  down  one  entry,  except  if the last entry of the menu is already
              selected.

       Enter/Return
              The interaction with the object is terminated.


BUGS, IDEAS, FEEDBACK
       This document, and the package it describes,  will  undoubtedly  contain  bugs  and  other  problems.
       Please   report   such   in   the   category   term   of   the  Tcllib  SF  Trackers  [http://source -
       forge.net/tracker/? group_id=12883].  Please also report any ideas for enhancements you may  have  for
       either package and/or documentation.

KEYWORDS
       control, menu, terminal, text display

CATEGORY
       Terminal control

COPYRIGHT
       Copyright (c) 2006 Andreas Kupries <andreas_kupries@users.sourceforge.net>




term                                                 0.1                             term::interact::menu(n)