uevent::onidle(n)                 User events                uevent::onidle(n)



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NAME
       uevent::onidle - Request merging and deferal to idle time

SYNOPSIS
       package require Tcl  8.4

       package require uevent::onidle  ?0.1?

       package require logger

       ::uevent::onidle objectName commandprefix

       objectName request

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DESCRIPTION
       This package provides objects which can merge multiple requestes for an
       action and execute the action the moment the system (event loop)
       becomes idle. The action to be run is configured during object
       construction.

API
       The package exports a class, uevent::onidle, as specified below.

       ::uevent::onidle objectName commandprefix
              The command creates a new onidle object with an associated
              global Tcl command whose name is objectName.  This command may
              be used to invoke various operations on the object.

              The commandprefix is the action to perform when the event loop
              is idle and the user asked for it using the method request (See
              below).

       The object commands created by the class commands above have the form:

       objectName request
              This method requests the execution of the command prefix
              specified during the construction of objectName the next time
              the event loop is idle. Multiple requests are merged and cause
              only one execution of the command prefix.

EXAMPLES
       Examples of this type of deferal are buried in the (C-level)
       implementations all the Tk widgets, defering geometry calculations and
       window redraw activity in this manner.

BUGS, IDEAS, FEEDBACK
       This document, and the package it describes, will undoubtedly contain
       bugs and other problems.  Please report such in the category uevent 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
       callback, deferal, event, idle, merge, on-idle

COPYRIGHT
       Copyright (c) 2008 Andreas Kupries <andreas_kupries@users.sourceforge.net>




uev                                   0.1                    uevent::onidle(n)
