MediaWiki:Ticker.js
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/*jshint evil:true*/
/*global mw, $*/
var ticker_enabled = true;
var ticker_tl=[]; //Don't touch
var ticker_speed=20; //Increase to slow down, too low makes it go incredibly slow, 15 is about right
var ticker_index=0, ticker_text_pos=0; //Don't touch
var ticker_str_length; //Don't touch
var ticker_contents; //Don't touch
//So people can make there own custom pages outside of the main source (add to this array in special:mypage/monobook.js etc), this will only initilize array if it doesn't already exist.
var ticker_custompages = (ticker_custompages instanceof Array ? ticker_custompages : []);
var ticker_custommsg = (ticker_custommsg instanceof Array ? ticker_custommsg : []);
// Add lines like the following to add custom tickers:
// ticker_custompages['Portal:PORTALNAME'] = 'Portal:PORTALNAME/Tickersource';
// Make sure that the /Tickersource page is formatted like [[Wikinews:Tickersource/Tickersource]] using DPLs
ticker_custompages['Portal:Futebol'] = 'Portal:Futebol/Tickersource';
//Add custommsgs for all custom pages
ticker_custommsg['Portal:Futebol'] = 'Últimas notícias do futebol';
function ticker_prepare(){
ticker_str_length=ticker_tl[0].length;
var content = document.getElementById('showticker').innerHTML;
if(content !== ""){
content += "<br/>\n";
}
var start = "Últimas notícias";
if(ticker_custommsg[wgBasePageName]){
start = ticker_custommsg[wgBasePageName];
}
content += "<div id='ticker_start' style='font-weight: bold; font-size: 120%; display: inline;'>" + start + " <div style='font-size: smaller; display: inline;'>(<a href='" + mw.util.getUrl( ticker_toload, { 'action': 'purge' } ) + "'>Lista completa</a>)</div>: </div><div id='ticker_content' style='font-size: 120%; font-color: blue; display: inline;'></div>";
document.getElementById('showticker').innerHTML = content;
}
var wgBasePageName = mw.config.get('wgPageName');
if(mw.config.get('wgPageName').indexOf("/") != -1){
wgBasePageName = mw.config.get('wgPageName').substring(0,mw.config.get('wgPageName').indexOf("/"));
}
var ticker_toload = "";
function ticker_load(){
// can be set to false in a user's custom js file
if( !ticker_enabled || ! $( '#showticker' ).length ){
return;
}
ticker_toload = "Wikinews:Tickersource/Tickersource";
if(ticker_custompages[wgBasePageName]){
ticker_toload = ticker_custompages[wgBasePageName];
}
var xmlhttp = sajax_init_object();
xmlhttp.overrideMimeType('text/xml');
xmlhttp.open( 'GET' , mw.util.getUrl( ticker_toload, { 'action': 'render' } ), true);
xmlhttp.onload = function() {
//this.responseXML is the DOM
var entries = this.responseText.split("\n");
//window.alert(this.responseText);
for(var i = 0; i < entries.length; i++){
var val = entries[i];
if(val.indexOf("<li>") === 0 && val.indexOf("<a") != -1){
val = val.substring(val.indexOf("\">")+2, val.indexOf("</a>"));
ticker_tl[ticker_tl.length] = val;
}
}
ticker_prepare();
ticker_tick(false, true);
};
xmlhttp.send( null );
}
function ticker_tick(reset, first)
{
if(reset){
document.getElementById("ticker_content").innerHTML = "";
}
if(first){
ticker_index = Math.floor(Math.random() * ticker_tl.length);
ticker_text_pos=0;
ticker_str_length=ticker_tl[ticker_index].length;
}
ticker_contents='';
//window.alert("TL: "+ticker_tl[ticker_index]);
document.getElementById("ticker_content").innerHTML = ("<a href=\"" + mw.util.getUrl( ticker_tl[ticker_index] ) + "\" title=\"" + mw.html.escape( ticker_tl[ticker_index] ) + "\">" + ticker_tl[ticker_index].substring(0,ticker_text_pos) + "_</a>").replace("\n", "");
if(ticker_text_pos++>=ticker_str_length)
{
ticker_index++;
if(ticker_index<ticker_tl.length)
{
ticker_text_pos=0;
ticker_str_length=ticker_tl[ticker_index].length;
if(first){
setTimeout("ticker_tick(true, false)",3);
}else{
setTimeout("ticker_tick(true, false)",7000);
}
}else{
ticker_index = Math.floor(Math.random() * ticker_tl.length);
ticker_text_pos=0;
ticker_str_length=ticker_tl[ticker_index].length;
setTimeout("ticker_tick(true, false)",7000);
}
} else
setTimeout("ticker_tick(false, false)",ticker_speed);
}
function sajax_init_object() {
var A;
try {
// Try the new style before ActiveX so we don't
// unnecessarily trigger warnings in IE 7 when
// set to prompt about ActiveX usage
A = new XMLHttpRequest();
} catch (e) {
try {
A=new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
A=new ActiveXObject("Microsoft.XMLHTTP");
} catch (oc) {
A=null;
}
}
}
return A;
}
// Disables for IE, AJAX etc is really bugged in IE, wont work without major rewrite and server-side extension.
if(navigator.userAgent.indexOf("MSIE") == -1){
$(ticker_load);
}