skins/common/IEFixes.js

   1 /**
   2  * IE fixes javascript loaded by wikibits.js for IE <= 6.0
   3  */
   4 /*global isMSIE55:true, doneIETransform:true, doneIEAlphaFix:true */
   5 /*global hookit:true, fixalpha:true */
   6 ( function ( mw, $ ) {
   7
   8 var expandedURLs, hasClass;
   9
  10 // Also returns true for IE6, 7, 8, 9 and 10. createPopup is removed in IE11.
  11 // Good thing this is only loaded for IE <= 6 by wikibits.
  12 // Might as well set it to true.
  13 isMSIE55 = ( window.showModalDialog && window.clipboardData && window.createPopup );
  14 doneIETransform = false;
  15 doneIEAlphaFix = false;
  16
  17 hookit = function () {
  18         if ( !doneIETransform && document.getElementById && document.getElementById( 'bodyContent' ) ) {
  19                 doneIETransform = true;
  20                 fixalpha();
  21         }
  22 };
  23
  24 if ( document.attachEvent ) {
  25         document.attachEvent( 'onreadystatechange', hookit );
  26 }
  27
  28 // png alpha transparency fixes
  29 fixalpha = function ( logoId ) {
  30         // bg
  31         if ( isMSIE55 && !doneIEAlphaFix ) {
  32                 var bg, imageUrl, linkFix, logoa, logospan, plogo;
  33                 plogo = document.getElementById( logoId || 'p-logo' );
  34                 if ( !plogo ) {
  35                         return;
  36                 }
  37
  38                 logoa = plogo.getElementsByTagName('a')[0];
  39                 if ( !logoa ) {
  40                         return;
  41                 }
  42
  43                 bg = logoa.currentStyle.backgroundImage;
  44                 imageUrl = bg.substring( 5, bg.length - 2 );
  45
  46                 doneIEAlphaFix = true;
  47
  48                 if ( imageUrl.substr( imageUrl.length - 4 ).toLowerCase() === '.png' ) {
  49                         logospan = logoa.appendChild( document.createElement( 'span' ) );
  50
  51                         logoa.style.backgroundImage = 'none';
  52                         logospan.style.filter = 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=' + imageUrl + ')';
  53                         logospan.style.height = '100%';
  54                         logospan.style.position = 'absolute';
  55                         logospan.style.width = logoa.currentStyle.width;
  56                         logospan.style.cursor = 'hand';
  57                         // Center image with hack for IE5.5
  58                         if ( document.documentElement.dir === 'rtl' ) {
  59                                 logospan.style.right = '50%';
  60                                 logospan.style.setExpression( 'marginRight', '"-" + (this.offsetWidth / 2) + "px"' );
  61                         } else {
  62                                 logospan.style.left = '50%';
  63                                 logospan.style.setExpression( 'marginLeft', '"-" + (this.offsetWidth / 2) + "px"' );
  64                         }
  65                         logospan.style.top = '50%';
  66                         logospan.style.setExpression( 'marginTop', '"-" + (this.offsetHeight / 2) + "px"' );
  67
  68                         linkFix = logoa.appendChild( logoa.cloneNode() );
  69                         linkFix.style.position = 'absolute';
  70                         linkFix.style.height = '100%';
  71                         linkFix.style.width = '100%';
  72                 }
  73         }
  74 };
  75
  76 if ( isMSIE55 ) {
  77         // ondomready
  78         $( fixalpha );
  79 }
  80
  81 // Expand links for printing
  82 hasClass = function ( classText, classWanted ) {
  83         var i = 0, classArr = classText.split(/\s/);
  84         for ( i = 0; i < classArr.length; i++ ) {
  85                 if ( classArr[i].toLowerCase() === classWanted.toLowerCase() ) {
  86                         return true;
  87                 }
  88         }
  89         return false;
  90 };
  91
  92 window.onbeforeprint = function () {
  93         var allLinks, contentEl, expandedLink, expandedText, i;
  94
  95         expandedURLs = [];
  96         contentEl = document.getElementById( 'content' );
  97
  98         if ( contentEl ) {
  99                 allLinks = contentEl.getElementsByTagName( 'a' );
 100
 101                 for ( i = 0; i < allLinks.length; i++ ) {
 102                         if ( hasClass( allLinks[i].className, 'external' ) && !hasClass( allLinks[i].className, 'free' ) ) {
 103                                 expandedLink = document.createElement( 'span' );
 104                                 expandedText = document.createTextNode( ' (' + allLinks[i].href + ')' );
 105                                 expandedLink.appendChild( expandedText );
 106                                 allLinks[i].parentNode.insertBefore( expandedLink, allLinks[i].nextSibling );
 107                                 expandedURLs[i] = expandedLink;
 108                         }
 109                 }
 110         }
 111 };
 112
 113 window.onafterprint = function () {
 114         for ( var i = 0; i < expandedURLs.length; i++ ) {
 115                 if ( expandedURLs[i] ) {
 116                         expandedURLs[i].removeNode( true );
 117                 }
 118         }
 119 };
 120
 121 }( mediaWiki, jQuery ) );