90 lines
2.8 KiB
PHP
90 lines
2.8 KiB
PHP
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<?php
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namespace Smarty\FunctionHandler;
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use Smarty\Template;
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/**
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* Smarty {cycle} function plugin
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* Type: function
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* Name: cycle
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* Date: May 3, 2002
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* Purpose: cycle through given values
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* Params:
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*
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* - name - name of cycle (optional)
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* - values - comma separated list of values to cycle, or an array of values to cycle
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* (this can be left out for subsequent calls)
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* - reset - boolean - resets given var to true
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* - print - boolean - print var or not. default is true
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* - advance - boolean - whether to advance the cycle
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* - delimiter - the value delimiter, default is ","
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* - assign - boolean, assigns to template var instead of printed.
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*
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* Examples:
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*
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* {cycle values="#eeeeee,#d0d0d0d"}
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* {cycle name=row values="one,two,three" reset=true}
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* {cycle name=row}
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*
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* @author Monte Ohrt <monte at ohrt dot com>
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* @author credit to Mark Priatel <mpriatel@rogers.com>
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* @author credit to Gerard <gerard@interfold.com>
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* @author credit to Jason Sweat <jsweat_php@yahoo.com>
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* @version 1.3
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*
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* @param array $params parameters
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* @param Template $template template object
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*
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* @return string|null
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*/
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class Cycle extends Base {
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public function handle($params, Template $template) {
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static $cycle_vars;
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$name = (empty($params['name'])) ? 'default' : $params['name'];
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$print = !(isset($params['print'])) || (bool)$params['print'];
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$advance = !(isset($params['advance'])) || (bool)$params['advance'];
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$reset = isset($params['reset']) && (bool)$params['reset'];
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if (!isset($params['values'])) {
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if (!isset($cycle_vars[$name]['values'])) {
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trigger_error('cycle: missing \'values\' parameter');
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return;
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}
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} else {
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if (isset($cycle_vars[$name]['values']) && $cycle_vars[$name]['values'] !== $params['values']) {
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$cycle_vars[$name]['index'] = 0;
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}
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$cycle_vars[$name]['values'] = $params['values'];
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}
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if (isset($params['delimiter'])) {
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$cycle_vars[$name]['delimiter'] = $params['delimiter'];
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} elseif (!isset($cycle_vars[$name]['delimiter'])) {
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$cycle_vars[$name]['delimiter'] = ',';
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}
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if (is_array($cycle_vars[$name]['values'])) {
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$cycle_array = $cycle_vars[$name]['values'];
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} else {
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$cycle_array = explode($cycle_vars[$name]['delimiter'], $cycle_vars[$name]['values']);
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}
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if (!isset($cycle_vars[$name]['index']) || $reset) {
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$cycle_vars[$name]['index'] = 0;
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}
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if (isset($params['assign'])) {
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$print = false;
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$template->assign($params['assign'], $cycle_array[$cycle_vars[$name]['index']]);
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}
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if ($print) {
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$retval = $cycle_array[$cycle_vars[$name]['index']];
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} else {
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$retval = null;
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}
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if ($advance) {
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if ($cycle_vars[$name]['index'] >= count($cycle_array) - 1) {
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$cycle_vars[$name]['index'] = 0;
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} else {
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$cycle_vars[$name]['index']++;
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}
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}
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return $retval;
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}
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}
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