Bivio::UI::HTML::Widget::Title
# Copyright (c) 1999-2001 bivio Software, Inc. All rights reserved.
# $Id$
package Bivio::UI::HTML::Widget::Title;
use strict;
# NAME
#
# Bivio::UI::HTML::Widget::Title - renders title from subtopic, topic, and realm
#
# RELEASE SCOPE
#
# bOP
#
# SYNOPSIS
#
# use Bivio::UI::HTML::Widget::Title;
# Bivio::UI::HTML::Widget::Title->new($attrs);
#
# EXTENDS
#
# Bivio::UI::Widget
#
use Bivio::UI::Widget;
@Bivio::UI::HTML::Widget::Title::ISA = qw(Bivio::UI::Widget);
# DESCRIPTION
#
#
Bivio::UI::HTML::Widget::Title adds a level of titleion to
# the rendering of widgets. The widget which is this widget's value
# is rendered dynamically by accessing this widget's attributes dynamically.
#
# ATTRIBUTES
#
#
# values : array_ref (required)
#
# Each element will be rendered with
# Bivio::UI::Widget::unsafe_render_value
#
# If result is undef or zerol length, no value
# is rendered. In all cases, the strings are passed to escaped.
#
# title_separator : string [' - '] (inherited)
#
# Used to separate values in title.
#
#
#=IMPORTS
use Bivio::HTML;
#=VARIABLES
my($_IDI) = __PACKAGE__->instance_data_index;
my($_DEFAULT_SEPARATOR) = ' - ';
# FACTORIES
#
#
# static new(array_ref values, string separator, hash_ref attributes) : Bivio::UI::HTML::Widget::Form
#
# static new(hash_ref attributes) : Bivio::UI::HTML::Widget::Form
#
# Creates a new Form widget.
#
sub new {
my($self) = shift->SUPER::new(@_);
$self->[$_IDI] = {};
return $self;
}
# METHODS
#
#
# initialize()
#
# No op.
#
sub initialize {
my($self) = @_;
my($fields) = $self->[$_IDI];
return if $fields->{values};
my($i) = 0;
$fields->{values} = [map {
$self->initialize_value($i++, $_);
} @{$self->get('values')}];
$fields->{separator} = $self->ancestral_get('title_separator',
$_DEFAULT_SEPARATOR);
return;
}
#
# static internal_new_args() : hash_ref
#
# Implements positional argument parsing for new.
#
sub internal_new_args {
my(undef, $values, $seperator, $attributes) = @_;
return '"values" must be defined' unless ref($values);
return {
values => $values,
(defined($seperator) ? (seperator => $seperator) : ()),
($attributes ? %$attributes : ()),
};
}
#
# render(any source, string_ref buffer)
#
# Render the title by joining the values. We set the Title in the
# reply as well.
#
sub render {
my($self, $source, $buffer) = @_;
my($fields) = $self->[$_IDI];
my(@v, @t) = ();
my($i) = 0;
foreach my $v (@{$fields->{values}}) {
my($x) = $v;
if (ref($x)) {
my($b) = '';
$self->unsafe_render_value($i++, $x, $source, \$b);
next unless length($b);
$x = $b;
}
push(@v, Bivio::HTML->escape($x));
push(@t, $x);
}
$$buffer .= '<title>'.join($fields->{separator}, @v)."</title>\n";
$source->get('reply')->set_header('Title', join($fields->{separator}, @t));
return;
}
#=PRIVATE METHODS
# COPYRIGHT
#
# Copyright (c) 1999-2001 bivio Software, Inc. All rights reserved.
#
# VERSION
#
# $Id$
#
1;