messagedialog.itk

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#
# Messagedialog
# ----------------------------------------------------------------------
# Implements a message dialog composite widget.  The Messagedialog is 
# derived from the Dialog class and is composed of an image and text
# component.  The image will accept both images as well as bitmaps.
# The text can extend mutliple lines by embedding newlines.
# 
# ----------------------------------------------------------------------
#  AUTHOR: Mark L. Ulferts              EMAIL: [e-mail]
#
#  @(#) $Id: messagedialog.itk 144 2003-02-05 10:56:26Z mdejong $
# ----------------------------------------------------------------------
#            Copyright (c) 1995 DSC Technologies Corporation
# ======================================================================
# Permission to use, copy, modify, distribute and license this software 
# and its documentation for any purpose, and without fee or written 
# agreement with DSC, is hereby granted, provided that the above copyright 
# notice appears in all copies and that both the copyright notice and 
# warranty disclaimer below appear in supporting documentation, and that 
# the names of DSC Technologies Corporation or DSC Communications 
# Corporation not be used in advertising or publicity pertaining to the 
# software without specific, written prior permission.
# 
# DSC DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING 
# ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, AND NON-
# INFRINGEMENT. THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, AND THE
# AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE MAINTENANCE, 
# SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. IN NO EVENT SHALL 
# DSC BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR 
# ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, 
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTUOUS ACTION,
# ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 
# SOFTWARE.
# ======================================================================

#
# Usual options.
#
itk::usual Messagedialog {
    keep -background -cursor -font -foreground -modality
    keep -wraplength -justify
}

# ------------------------------------------------------------------
#                            MESSAGEDIALOG
# ------------------------------------------------------------------
class iwidgets::Messagedialog {
    inherit iwidgets::Dialog

    constructor {args} {}

    itk_option define -imagepos imagePos Position w
}

#
# Provide a lowercased access method for the Messagedialog class.
# 
proc ::iwidgets::messagedialog {pathName args} {
    uplevel ::iwidgets::Messagedialog $pathName $args
}

#
# Use option database to override default resources of base classes.
#
option add *Messagedialog.title "Message Dialog" widgetDefault
option add *Messagedialog.master "." widgetDefault
option add *Messagedialog.textPadX 20 widgetDefault
option add *Messagedialog.textPadY 20 widgetDefault

# ------------------------------------------------------------------
#                        CONSTRUCTOR
# ------------------------------------------------------------------
body iwidgets::Messagedialog::constructor {args} {
    #
    # Create the image component which may be either a bitmap or image.
    #
    itk_component add image {
	label $itk_interior.image 
    } {
	keep -background -bitmap -cursor -foreground -image 
    }
    
    #
    # Create the text message component.  The message may extend over
    # several lines by embedding '\n' characters.
    #
    itk_component add message {
	label $itk_interior.message
    } {
	keep -background -cursor -font -foreground -text 
	keep -wraplength -justify

	rename -padx -textpadx textPadX Pad
	rename -pady -textpady textPadY Pad
    }
    
    #
    # Hide the apply and help buttons.
    #
    hide Apply
    hide Help
    
    #
    # Initialize the widget based on the command line options.
    #
    eval itk_initialize $args
}   

# ------------------------------------------------------------------
#                             OPTIONS
# ------------------------------------------------------------------

# ------------------------------------------------------------------
# OPTION: -imagepos
#
# Specifies the image position relative to the message: n, s,
# e, or w.  The default is w.
# ------------------------------------------------------------------
configbody iwidgets::Messagedialog::imagepos {
    switch $itk_option(-imagepos) {
    	n {
	    grid $itk_component(image) -row 0 -column 0 
	    grid $itk_component(message) -row 1 -column 0 
    	}
    	s {
	    grid $itk_component(message) -row 0 -column 0 
	    grid $itk_component(image) -row 1 -column 0 
    	}
    	e {
	    grid $itk_component(message) -row 0 -column 0 
	    grid $itk_component(image) -row 0 -column 1
    	}
    	w {
	    grid $itk_component(image) -row 0 -column 0 
	    grid $itk_component(message) -row 0 -column 1
    	}
	
    	default {
    	    error "bad imagepos option \"$itk_option(-imagepos)\":\
		    should be n, e, s, or w"
    	}
    }
}