/**
* javascript functionality for the lastfm plugin
*
* @author Michael Klier <chi@chimeric.de>
*/
function lastfm_ajax(chart, opts) {
if(!document.getElementById) return;
if(!chart) return;
if(!opts) return;
var ajax = new sack(DOKU_BASE+'lib/exe/ajax.php');
ajax.AjaxFailedAlert = '';
ajax.encodeURIString = false;
ajax.setVar('call', 'plugin_lastfm');
ajax.setVar('plugin_lastfm_chart', chart.id);
for(var i = 0; i < opts.length; i++) {
ajax.setVar(opts[i].firstChild.className, opts[i].firstChild.innerHTML);
}
// show loader
lastfm_loader(chart);
// define callback
ajax.onCompletion = function(){
var data = this.response;
if(data === ''){ return; }
chart.style.visibility = 'hidden';
chart.innerHTML = data;
chart.style.visibility = 'visible';
};
ajax.runAJAX();
}
/**
* Calls the ajax function for each requested chart
*
* @author Michael Klier <chi@chimeric.de>
*/
function lastfm_get_charts(charts, opts){
if(!document.getElementById) return;
if(!charts) return;
if(!opts) return;
for(var i = 0; i < charts.length; i++) {
lastfm_ajax(charts[i], opts);
}
}
/**
* shows the loading image
*
* @author Michael KLier <chi@chimeric.de>
*/
function lastfm_loader(obj) {
if(!obj) return;
obj.innerHTML = '<img src="'+DOKU_BASE+'lib/plugins/lastfm/images/loader.gif" />';
}
// add the init event
addInitEvent(function() {
var objs = getElementsByClass('plugin_lastfm', document, 'div');
if(!objs) return;
for(var i = 0; i < objs.length; i++) {
var opts = getElementsByClass('plugin_lastfm_opt', objs[i], 'li');
var charts = getElementsByClass('plugin_lastfm_chart', objs[i], 'div');
lastfm_get_charts(charts, opts);
}
});
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