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<?php
/**
* @file
* @brief sigplus Image Gallery Plus custom list control with grouped items
* @author Levente Hunyadi
* @version 1.3.4
* @remarks Copyright (C) 2009-2011 Levente Hunyadi
* @remarks Licensed under GNU/GPLv3, see http://www.gnu.org/licenses/gpl-3.0.html
* @see http://hunyadi.info.hu/projects/sigplus
*/
/*
* sigplus Image Gallery Plus plug-in for Joomla
* Copyright 2009-2010 Levente Hunyadi
*
* sigplus is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* sigplus is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
// Check to ensure this file is within the rest of the framework
defined('JPATH_BASE') or die();
// This file is fully compatible with PHP 4.
/**
* An item in a group that may contain other items.
* Provides HTML rendering capabilities into a list of @c option and @c optgroup elements in a @c select element.
*/
class JElementSection {
/*private*/ var $value;
/*private*/ var $label;
/*private*/ var $items;
function JElementSection($value = false, $label = '') {
$this->value = $value;
$this->label = $label;
$this->items = array();
}
/**
* Generates an HTML @c option list with option groups (@c optgroup).
* @param selected The possibly nested key that is selected.
* @return HTML for the option list.
*/
/*public*/ function render($selected, $prefix = false) {
$t = JFilterOutput::ampReplace($this->label); // ensure ampersands are encoded
$k = $prefix !== false ? $prefix.'/'.$this->value : $this->value;
if (count($this->items) > 0) { // an option group
$html = '';
if ($k !== false) { // not the root group
$html .= '<optgroup label="'.JText::_($t).'">';
}
foreach ($this->items as $option) {
$html .= $option->render($selected, $k);
}
if ($k !== false) { // not the root group
$html .= '</optgroup>';
}
return $html;
} else { // a single option
if ($k !== false) {
$s = ($selected === $k ? ' selected="selected"' : '');
return '<option value="'.$k.'"'.$s.'>'.JText::_($t).'</option>';
} else { // no options in root group
return '';
}
}
}
/**
* Adds a nested item to a group.
* @param keys The path to the newly added item as an array. Each array element is a key for a single level.
* @param label The label to use for the newly added item.
*/
/*private*/ function add_item(&$keys, $label) {
$k = array_shift($keys); // get first key
if (!isset($this->items[$k])) {
$this->items[$k] = new JElementSection($k);
}
$i =& $this->items[$k];
if (count($keys) >= 1) { // node
$i->add_item($keys, $label);
} else { // leaf
$i->label = $label;
}
}
/**
* Adds a nested item to a group based on a key.
* @param key The path to the newly added item as a string. Path elements are separated by a '/'.
* @param label The label to use for the newly added item.
*/
/*public*/ function add($key, $label) {
$keys = explode('/', $key);
$this->add_item($keys, $label);
}
}
/**
* Renders a list control with grouped items.
* This class represents a user-defined control in the administration backend.
*/
class JElementSectionedList extends JElement {
/**
* Element type.
*/
var $_name = 'SectionedList';
/**
* Generates an HTML @c select list with option groups.
* @param name The value of the HTML name attribute.
* @param attribs Additional HTML attributes for the <select> tag.
* @param selected The possibly nested key that is selected.
* @return HTML for the select list.
*/
/*private*/ function renderHtmlSelect($options, $name, $attribs = null, $selected = null, $idtag = false) {
if (is_array($attribs)) {
$attribs = JArrayHelper::toString($attribs);
}
$id = $name;
if ( $idtag ) {
$id = $idtag;
}
$id = str_replace('[','',$id);
$id = str_replace(']','',$id);
$html = '<select name="'. $name .'" id="'. $id .'" '. $attribs .'>';
$html .= $options->render($selected);
$html .= '</select>';
return $html;
}
/*public*/ function fetchElement($name, $value, &$node, $control_name) {
$class = ( $node->attributes('class') ? 'class="'.$node->attributes('class').'"' : 'class="inputbox"' );
$options = new JElementSection(); // root group
foreach ($node->children() as $o) {
$val = $o->attributes('value');
$text = $o->data();
$options->add($val, $text);
}
return $this->renderHtmlSelect($options, $control_name.'['.$name.']', $class, $value, $control_name.$name);
}
}