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92 lines
2.5 KiB
92 lines
2.5 KiB
#!/usr/local/bin/perl
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use CGI qw(:standard :html3);
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# Some constants to use in our form.
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@colors=qw/aqua black blue fuschia gray green lime maroon navy olive
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purple red silver teal white yellow/;
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@sizes=("<default>",1..7);
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# recover the "preferences" cookie.
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%preferences = cookie('preferences');
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# If the user wants to change the background color or her
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# name, they will appear among our CGI parameters.
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foreach ('text','background','name','size') {
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$preferences{$_} = param($_) || $preferences{$_};
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}
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# Set some defaults
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$preferences{'background'} = $preferences{'background'} || 'silver';
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$preferences{'text'} = $preferences{'text'} || 'black';
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# Refresh the cookie so that it doesn't expire. This also
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# makes any changes the user made permanent.
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$the_cookie = cookie(-name=>'preferences',
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-value=>\%preferences,
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-expires=>'+30d');
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print header(-cookie=>$the_cookie);
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# Adjust the title to incorporate the user's name, if provided.
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$title = $preferences{'name'} ?
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"Welcome back, $preferences{name}!" : "Customizable Page";
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# Create the HTML page. We use several of Netscape's
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# extended tags to control the background color and the
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# font size. It's safe to use Netscape features here because
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# cookies don't work anywhere else anyway.
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print start_html(-title=>$title,
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-bgcolor=>$preferences{'background'},
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-text=>$preferences{'text'}
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);
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print basefont({SIZE=>$preferences{size}}) if $preferences{'size'} > 0;
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print h1($title),<<END;
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You can change the appearance of this page by submitting
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the fill-out form below. If you return to this page any time
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within 30 days, your preferences will be restored.
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END
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;
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# Create the form
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print hr(),
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start_form,
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"Your first name: ",
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textfield(-name=>'name',
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-default=>$preferences{'name'},
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-size=>30),br,
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table(
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TR(
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td("Preferred"),
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td("Page color:"),
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td(popup_menu(-name=>'background',
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-values=>\@colors,
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-default=>$preferences{'background'})
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),
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),
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TR(
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td(''),
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td("Text color:"),
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td(popup_menu(-name=>'text',
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-values=>\@colors,
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-default=>$preferences{'text'})
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)
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),
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TR(
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td(''),
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td("Font size:"),
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td(popup_menu(-name=>'size',
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-values=>\@sizes,
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-default=>$preferences{'size'})
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)
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)
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),
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submit(-label=>'Set preferences'),
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hr;
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print a({HREF=>"/"},'Go to the home page');
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print end_html;
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