/**
* Returns the javascript needed for a remote function.
* Takes the same arguments as 'link_to_remote()'.
*
* Example:
* <select id="options" onchange="<?php echo remote_function(array('update' => 'options', 'url' => '@update_options')) ?>">
* <option value="0">Hello</option>
* <option value="1">World</option>
* </select>
*/
function ls_remote_function($options)
{
sfContext::getInstance()->getResponse()->addJavascript(sfConfig::get('sf_prototype_web_dir') . '/js/prototype');
$javascript_options = _options_for_ajax($options);
$update = '';
if (isset($options['update']) && is_array($options['update'])) {
$update = array();
if (isset($options['update']['success'])) {
$update[] = "success:'" . $options['update']['success'] . "'";
}
if (isset($options['update']['failure'])) {
$update[] = "failure:'" . $options['update']['failure'] . "'";
}
$update = '{' . join(',', $update) . '}';
} else {
if (isset($options['update'])) {
$update .= "'" . $options['update'] . "'";
}
}
$function = !$update ? "new Ajax.Request(" : "new Ajax.Updater({$update}, ";
$function .= '\'' . url_for($options['url']) . '\'';
//ADDED TO ALLOW FOR APPENDING HASHES TO URLS FOR AJAX
if (isset($options['posturl'])) {
$function .= ' + ' . $options['posturl'];
}
$function .= ', ' . $javascript_options . ')';
if (isset($options['before'])) {
$function = $options['before'] . '; ' . $function;
}
if (isset($options['after'])) {
$function = $function . '; ' . $options['after'];
}
if (isset($options['condition'])) {
$function = 'if (' . $options['condition'] . ') { ' . $function . '; }';
}
if (isset($options['confirm'])) {
$function = "if (confirm('" . escape_javascript($options['confirm']) . "')) { {$function}; }";
if (isset($options['cancel'])) {
$function = $function . ' else { ' . $options['cancel'] . ' }';
}
}
return $function . ';';
}
/**
* Includes an AJAX navigation.
* If you provide a sfPager object, the helper automatically stops the periodical call
* wen reaching the last page
*
* <b>Options:</b>
* - url - 'module/action' or '@rule' of the AJAX action
* - update - id of the paginated list
* - page_name - name of the page request parameter, defaults to 'name'
* - frequency - number of seconds between each position check, defaults to 1 second
* - trigger - height in pixels, calculated from the bottom of the page, which triggers the AJAX call
* ...as well as the usual remote_ helpers options
*
* @param array Ajax options
* @param object optional sfPager object of the current pager
* @return string XHTML code containing links
*/
function remote_pager($options = array(), $pager = null)
{
if ($pager && ($pager->getNextPage() == $pager->getPage() || $pager->getPage() != 1)) {
return;
}
// name of the page request parameter (default 'page')
$options['page_name'] = isset($options['page_name']) ? $options['page_name'] : 'page';
// frequency of the scroll check (default 1 second)
$options['frequency'] = isset($options['frequency']) ? $options['frequency'] : 1;
// scroll offset (in pixels, from the bottom) triggering the remote call (default 30px)
$options['trigger'] = isset($options['trigger']) ? $options['trigger'] : '30';
$options['position'] = isset($options['position']) ? $options['position'] : 'before';
use_helper('Javascript');
$javascript_callback = 'ajax_pager_semaphore = 0; ajax_pager_page++;';
if ($pager) {
// build in the stop of the PeriodicalExecuter when the pager reaches the last page
$javascript_callback .= 'if(ajax_pager_page>' . $pager->getLastPage() . ') { pager_watch.callback = function () {}; };';
}
$options['success'] = isset($options['success']) ? $options['success'] . $javascript_callback : $javascript_callback;
return javascript_tag("\r\n var ajax_pager_semaphore = 0;\r\n var ajax_pager_page = 2;\r\n\r\n function sf_ajax_next_page()\r\n {\r\n if (ajax_pager_semaphore == 0)\r\n {\r\n ajax_pager_semaphore = 1;\r\n new Ajax.Updater(\r\n '" . $options['update'] . "', \r\n '" . url_for($options['url']) . '?' . $options['page_name'] . "='+ajax_pager_page,\r\n " . _options_for_ajax($options) . "\r\n );\r\n }\r\n } \r\n\r\n pager_watch = new PeriodicalExecuter(function() \r\n {\r\n var scrollpos = window.pageYOffset || document.body.scrollTop || document.documentElement.scrollTop;\r\n var windowsize = window.innerHeight || document.documentElement.clientHeight;\r\n var testend = document.body.clientHeight - (windowsize + scrollpos);\r\n \r\n if ( (testend < " . $options['trigger'] . ") )\r\n {\r\n sf_ajax_next_page();\r\n }\r\n }, " . $options['frequency'] . ");");
}
function remote_function($options)
{
$obj =& get_instance();
$obj->response->enqueue_js('prototype');
$javascript_options = _options_for_ajax($options);
$update = '';
if (isset($options['update']) && is_array($options['update'])) {
$update = array();
if (isset($options['update']['success'])) {
$update[] = "success:'" . $options['update']['success'] . "'";
}
if (isset($options['update']['failure'])) {
$update[] = "failure:'" . $options['update']['failure'] . "'";
}
$update = '{' . join(',', $update) . '}';
} else {
if (isset($options['update'])) {
$update .= "'" . $options['update'] . "'";
}
}
$function = !$update ? "new Ajax.Request(" : "new Ajax.Updater({$update}, ";
$function .= '\'' . system_url($options['url']) . '\'';
$function .= ', ' . $javascript_options . ')';
if (isset($options['before'])) {
$function = $options['before'] . '; ' . $function;
}
if (isset($options['after'])) {
$function = $function . '; ' . $options['after'];
}
if (isset($options['condition'])) {
$function = 'if (' . $options['condition'] . ') { ' . $function . '; }';
}
if (isset($options['confirm'])) {
$function = "if (confirm('" . escape_javascript($options['confirm']) . "')) { {$function}; }";
if (isset($options['cancel'])) {
$function = $function . ' else { ' . $options['cancel'] . ' }';
}
}
return $function;
}
