term::interact::menu(3tcl)					 Terminal control					term::interact::menu(3tcl)

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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 com-
	      mand as its result.

	      The argument is the menu to show, possibly followed by configuration options and their values. The options are explained in the sec-
	      tion 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 pro-
	      cessing 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 col-
	      umn.

       -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 supply 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://sourceforge.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(3tcl)