MediaWiki:Ticker.js

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/*jshint evil:true*/
/*global mw, $*/
/***************************************************
 * This script is deprecated. Use https://en.wikinews.org/wiki/MediaWiki:Ticker2.js
 * instead.
 ***************************************************/
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 [[User:TheFearow/Tickersource]] using DPLs
ticker_custompages['Portal:Football'] = 'Portal:Football/Tickersource';
ticker_custompages['Wikinews:Newsroom'] = 'Wikinews:Newsroom/Tickersource';

//Add custommsgs for all custom pages
ticker_custommsg['Portal:Football'] = 'Latest football stories';
ticker_custommsg['Wikinews:Newsroom'] = 'Stories in development';

function ticker_prepare(){
 ticker_str_length=ticker_tl[0].length;
 var content = document.getElementById('showticker').innerHTML;
 if(content !== ""){
  content += "<br/>\n";
 }
 var start = "Latest stories";
 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' } ) + "'>full list</a>)</div>:&nbsp;</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 = "User:Matt/Tickersource";
 if(ticker_custompages[wgBasePageName]){
  ticker_toload = ticker_custompages[wgBasePageName];
 }
 $.ajax({
  url: mw.util.getUrl( ticker_toload, { 'action': 'render' } ),
  beforeSend: function( xhr ) {
   xhr.overrideMimeType( 'text/xml' );
  }
 }).done(function( data, textStatus, jqXHR ) {
  $( jqXHR.responseText ).find( 'li a' ).each(function(){
   ticker_tl.push( $(this).html() );
  });
  ticker_prepare();
  ticker_tick(false, true);
 });
}

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);

}

// 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);
}