[Perl-widget-developer] Teambuilding Exercise #2: Usage

SourceForge Headquarters 225 Broadway Suite 1600 San Diego, CA 92101 +1 (858) 422-6466

Hi,

We have gotten pretty focused over the last 24 hours on guts.
I am still working my teambuilding plan, which recognizes that
debating the guts is engaging, but it is the last step.

This exercise is about defining the usage of widgets.
I present here two files.

   cgi-bin/cgisample         a CGI script using widgets
   cgi-bin/cgisample.xml     a configuration file for widgets used

Note: These two files are running code in CVS.  See

   http://www.officevision.com/cgi-bin/pub/Widget/cgisample

I would encourage others to post sample CGI scripts, templates, and
config files that suggest how *they* would like to use widgets.

Forget the internals for a moment. ;-)

Stephen

P.S. I agree with Cees's comments about improving DateDropDowns.

shark:/usr/ov/acoc/dev/src/Widget/cgi-bin> more cgisample cgisample.xml
::::::::::::::
cgisample
::::::::::::::
#!/usr/local/bin/perl -w

##############################################################
# cgisample
##############################################################
# This is an example of a CGI script that uses the capabilities
# of the Perl Widget Library minimally.
# It looks like any other perl script which uses the CGI.pm
# library.
# See 'wexec' for an example of a CGI script that uses
# the full capabilities of the Perl Widget Library.
##############################################################

use lib "/usr/ov/acoc/dev/src/Widget";

use CGI;
$query = new CGI;

use Widget;
$wc = Widget->controller(-cgi => $query);
$wc->process_request();

print <<EOF;
Content-type: text/html

<head>
<title>cgisample</title>
</head>
<body bgcolor=#ffffff>
<h1>cgisample</h1>
<hr>
<form method='POST'>
EOF

# Please note that there is *nothing* in this code which indicates what
physical
# class is used to render each "logical" widget.
# When the widget is instantiated, though, it is a physical one.
# The controller decided which physical widget it would be based on
configuration
# information and runtime information (not yet implemented)

# There's more than one way to do it... ;-)
$first_name = $wc->widget("first_name")->html();   # you can skip the
widget and just get its HTML
$last_name  = $wc->widget("last_name")->html();
$address    = $wc->widget(
   -name  => "address",
   -class => "Widget::HTML::Element",
   -tag   => 'input',
   -type  => 'text',
   -size  => '14',
   -maxlength => '99',
)->html();
$birth_dt   = $wc->widget("birth_dt")->html;       # of course, you don't
need to provide parentheses ...
$sex        = $wc->widget("sex")->html();
$w_check_it = $wc->widget("check_it");             # or you can get the widget
$check_it   = $w_check_it->html();                   # then get its HTML
$anniv_dt   = $wc->widget("anniv_dt")->html();
$anniv_dt_value = $wc->widget("anniv_dt")->value();  # you can also do
other things to a widget, like get its value
            # note that $wc caches widget instances, so the previous two
lines did use the same physical widget
$anniv_dt_value = "" if (!defined $anniv_dt_value);

print <<EOF;

<table border=0>
  <tr> <td>First Name:       </td><td>$first_name</td>
<td>Widget::HTML::Element -
    a general widget for constructing any HTML element (remember, only the
configurer worries
    about what physical class it is. It's transparent to the
programmer)</td> </tr>
  <tr> <td>Last Name:        </td><td>$last_name</td>
<td>Widget::HTML::Element</td> </tr>
  <tr> <td>Birth Date:       </td><td>$birth_dt</td>
<td>Widget::HTML::Element</td> </tr>
  <tr> <td>Address:          </td><td>$address</td>
<td>Widget::HTML::Element (not in config file)</td> </tr>
  <tr> <td>Sex:              </td><td>$sex</td>
<td>Widget::HTML::Select</td> </tr>
  <tr> <td>Anniversary Date: </td><td>$anniv_dt</td>
<td>Widget::HTML::DateDropDowns</td> </tr>
  <tr> <td>&nbsp;            </td><td>$check_it</td>
<td>Widget::HTML::Button</td> </tr>
  <tr> <td>Anniversary Date is ... </td><td>$anniv_dt_value</td> <td>
(value) </td> </tr>
</table>

</form>
</body>
</html>
EOF

::::::::::::::
cgisample.xml
::::::::::::::
<config>
  <widget      name="first_name" tag='input' type='text' size='14'
maxlength='99'/>
  <widget      name="last_name"  widget-class='Widget::HTML::Element'
tag='input' type='text' size='14' maxlength='99'/>
  <widget      name="birth_dt"   widget-type='date'/>
  <widget      name="anniv_dt"   widget-type='date3'/>
  <widget      name="anniv_dt.year"  widget-type='year'/>
  <widget      name="anniv_dt.month" widget-type='month'/>
  <widget      name="anniv_dt.day"   widget-type='day'/>
  <widget      name="sex"        widget-type='sex'/>
  <widget      name="check_it"   widget-type='check_anniv_dt'/>
  <widget-type name="date"  tag='input' type='text' size='14' maxlength='99'/>
  <widget-type name="date3" widget-class='Widget::HTML::DateDropDowns'/>
  <widget-type name="sex"   widget-class='Widget::HTML::Select' domain='sex'/>
  <widget-type name="year"  widget-class='Widget::HTML::Select'
domain='year'/>
  <widget-type name="month" widget-class='Widget::HTML::Select'
domain='month'/>
  <widget-type name="day"   widget-class='Widget::HTML::Select' domain='day'/>
  <widget-type name="check_anniv_dt" widget-class='Widget::HTML::Button'
label=' Check Your Anniversary Date '/>
  <domain      name="sex">
    <item      name="M" label="Male"/>
    <item      name="F" label="Female"/>
  </domain>
  <domain      name="year">
    <item      name="1980"/>
    <item      name="1981"/>
    <item      name="1982"/>
    <item      name="1983"/>
    <item      name="1984"/>
    <item      name="1985"/>
    <item      name="1986"/>
    <item      name="1987"/>
    <item      name="1988"/>
    <item      name="1989"/>
    <item      name="1990"/>
    <item      name="1991"/>
    <item      name="1992"/>
    <item      name="1993"/>
    <item      name="1994"/>
    <item      name="1995"/>
    <item      name="1996"/>
    <item      name="1997"/>
    <item      name="1998"/>
    <item      name="1999"/>
    <item      name="2000"/>
    <item      name="2001"/>
    <item      name="2002"/>
    <item      name="2003"/>
    <item      name="2004"/>
    <item      name="2005"/>
    <item      name="2006"/>
    <item      name="2007"/>
    <item      name="2008"/>
    <item      name="2009"/>
  </domain>
  <domain      name="month">
    <item      name="01" label="Jan"/>
    <item      name="02" label="Feb"/>
    <item      name="03" label="Mar"/>
    <item      name="04" label="Apr"/>
    <item      name="05" label="May"/>
    <item      name="06" label="Jun"/>
    <item      name="07" label="Jul"/>
    <item      name="08" label="Aug"/>
    <item      name="09" label="Sep"/>
    <item      name="10" label="Oct"/>
    <item      name="11" label="Nov"/>
    <item      name="12" label="Dec"/>
  </domain>
  <domain      name="day">
    <item      name="01"/>
    <item      name="02"/>
    <item      name="03"/>
    <item      name="04"/>
    <item      name="05"/>
    <item      name="06"/>
    <item      name="07"/>
    <item      name="08"/>
    <item      name="09"/>
    <item      name="10"/>
    <item      name="11"/>
    <item      name="12"/>
    <item      name="13"/>
    <item      name="14"/>
    <item      name="15"/>
    <item      name="16"/>
    <item      name="17"/>
    <item      name="18"/>
    <item      name="19"/>
    <item      name="20"/>
    <item      name="21"/>
    <item      name="22"/>
    <item      name="23"/>
    <item      name="24"/>
    <item      name="25"/>
    <item      name="26"/>
    <item      name="27"/>
    <item      name="28"/>
    <item      name="29"/>
    <item      name="30"/>
    <item      name="31"/>
  </domain>
</config>