/*
 * Add tab for Avatar's "CheckUsage", "block" and "purge"
 * Rename "página de usuário" to "utilizador"
 * Rename "minhas contribuições" to "contribuições"
 * Based on Duesentrieb's, Dbenbenn's and Essjay's monobook.js code.
 @author: Duesentrieb, [[User:Duesentrieb/monobook.js]], Dbenbenn, [[User:Dbenbenn/monobook.js]], Essjay [[User:Essjay/monobook.js]], ABCD [[User:ABCD/monobook.js]], JesseW [[User:JesseW/monobook.js]]
 @license: Dual licensed under the GFDL and GPL
 */

// Returns <li><a href="url">name</a></li>
function addlilink(url, name)
{
  var na = document.createElement('a');
  na.setAttribute('href', url);

  var txt = document.createTextNode(name);
  na.appendChild(txt);

  var li = document.createElement('li');
  li.appendChild(na);
  return li;
}

// Gets the URL version of the page title.
function get_tidy_title()
{
  var editlk = document.getElementById('ca-edit').getElementsByTagName('a')[0].href;
  // cut everything up to "title=" from the start and everything past "&action=edit" from the end
  editlk = editlk.substring(editlk.indexOf('title=') + 6, editlk.lastIndexOf('&action=edit'));

  return editlk;
}

// Tab for Avatar's CheckUsage
function add_image_tabs()
{
  var imagetitle = get_tidy_title();

  var c1 = document.getElementById('column-one');
  var tabs = c1.getElementsByTagName('div')[0].getElementsByTagName('ul')[0];

//  tabs.appendChild(addlilink('http://en.wikipedia.org/wiki/' + imagetitle, 'en'));
  tabs.appendChild(addlilink('http://www.juelich.de/avatar/check-usage/check-usage.php?filename=' + imagetitle + '&template', 'check-usage'));

  tabs.appendChlid(addlilink('1', '1'));
  imagetitle = imagetitle.substring(6, imagetitle.length());
  tabs.appendChlid(addlilink('2', '2'));


  var i = 0;
  while (imagetitle[i] >= '1' && imagetitle[i] <= '9')
    i++;
  tabs.appendChlid(addlilink(imagetitle + ' ' + i, imagetitle + ' ' + i));
  if (i > 0 && imagetitle.substring(3) == 'px-') {
    imagetitle = imagetitle.substring(i + 3, imagetitle.length());
    tabs.appendChild(addlilink('http://commons.wikimedia.org/wiki/Image:' + imagetitle, 'unthumb'));
  }
}

// Adds "purge" tab to pages.
function add_purge_tab()
{
  var c1 = document.getElementById('column-one');
  var tabs = c1.getElementsByTagName('div')[0].getElementsByTagName('ul')[0];

  // use the "edit this page" tab to get already-tidied url
  var editlk = get_tidy_title();
  var editlko = get_tidy_title();

  editlk = editlk.substring(editlk.indexOf(':') + 1);
  var slloc = editlk.indexOf('/');
  if (slloc > 0)
    editlk = editlk.substring(0, slloc);

  // add "purge" tab
  tabs.appendChild(addlilink('/w/index.php?title=' + editlko + '&action=purge', 'A'));
}

function do_onload()
{
  var title = get_tidy_title();
  if (document.title.indexOf('Image:') == 0
      || document.title.indexOf('Imagem:') == 0)
  {
    add_image_tabs();
  }

  add_purge_tab();
}

if (window.addEventListener) 
  window.addEventListener("load", do_onload, false);
else if (window.attachEvent) 
  window.attachEvent("onload", do_onload);

if ( document.createElement && window.addEventListener )
{
	function SoFixItInit() // pre-load
	{

	}

	function SoFixItLoad() // post-load
	{
		UserMenu = new PortletMenu( 'p-personal'   );
		PageMenu = new PortletMenu( 'p-cactions'   );
		 NavMenu = new PortletMenu( 'p-navigation' );
		//ToolMenu = new PortletMenu( 'p-tb'         );

			//	This is inefficient and not particularly robust.
			//	This comes first, I want this link to come up as
			//	fast as possible.
			//
		function GetByClass( sElem, sClass )
		{	var i, a2 = [], a = document.getElementsByTagName( sElem );
			for ( i = 0; i < a.length; i++ )
				if ( a[ i ].className == sClass )
					a2.push( a[ i ] );
			return a2;
		}
		var a, td = GetByClass( 'td', 'diff-otitle' );
		if ( ( td = td[ 0 ] ) && ( a = td.getElementsByTagName( 'a' )[ 0 ] ) )
			a.href = a.href + '&action=edit'; // need to change text, later

		var userName = UserMenu.getText( 'pt-userpage' );
		UserMenu.setText( 'pt-mycontris'  , 'Contribuições' );
		PageMenu.setText( 'ca-nstab-user' , 'Utilizador'    );

		var x = 1;
		UserMenu.insertBefore( 'pt-watchlist', 'njs-pt-watchlist-en', 'en', 'http://en.wikipedia.org/wiki/Special:Watchlist' );
		NavMenu.append( 'n-' + x++, 'Esplanada', '/w/index.php?title=Wikipedia%3AEsplanada&amp;action=purge' );
	}
	function PortletMenu( id ) // constructor
	{
		this.menu = document.getElementById( id );
		this.list = this.menu.getElementsByTagName( 'ul' )[ 0 ]; // bypass "<h5>Views</h5>", etc.

			//	sigh...as far as I can figure, there is empty whitespace being treated
			//	as TextNodes....
			//
		var LIs = this.list.getElementsByTagName( 'li' );

		for ( var i = 0; i < LIs.length; i++ )
		{
			this[ LIs[ i ].id ] = LIs[ i ];
		}

		this.newItem = function( id, txt, url )
		{	var li = document.createElement( 'li' ); li.id   = id;
			var  a = document.createElement( 'a'  );  a.href = url;

			 a.appendChild( document.createTextNode( txt ) );
			li.appendChild( a );

			this[ id ] = li; // watch this!!!

			return li;
		}

		this.append = function( id, txt, url )
		{	this.list.appendChild( this.newItem( id, txt, url ) );
		}
		
		this.insertBefore = function( old, id, txt, url )
		{	this.list.insertBefore( this.newItem( id, txt, url ), this[ old ] );
		}

			//	the ByTagName here is a bit annoying, but in Safari, I was picking
			//	up TextNodes by using this[ id ].firstChild.firstChild
			//
		this.getText = function( id      ) { return this[ id ].getElementsByTagName( 'a' )[ 0 ].firstChild.data }
		this.setText = function( id, txt ) {        this[ id ].getElementsByTagName( 'a' )[ 0 ].firstChild.data = txt }

		this.getHref = function( id      ) { return this[ id ].getElementsByTagName( 'a' )[ 0 ].href       }
		this.setHref = function( id, url ) {        this[ id ].getElementsByTagName( 'a' )[ 0 ].href = url }
	}
	SoFixItInit();
	window.addEventListener( 'load', SoFixItLoad, false );
}