User:Interiot/js/RealTitle.js

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/*
<pre>
*/

//============================================================
// "Technical restrictions" title fix
//============================================================
//******** written by User:Interiot ********
// For pages that have something like Template:Lowercase, replace the title, but only if it is cut-and-pasteable as a valid wikilink.
//	(for instance [[iPod]]'s title is updated.  But [[C#]] is not an equivalent wikilink, so [[C Sharp]] doesn't have its main title changed)
//
// The function looks for a banner like this:
// <div id="RealTitleBanner">    <!-- div that gets hidden -->
//   <span id="RealTitle">title</span>
// </div>
// An element with id=DisableRealTitle disables the function.
addOnloadHook(function() {
	try {
		var realTitleBanner = document.getElementById("RealTitleBanner");
		if (realTitleBanner) {      /* && !document.getElementById("DisableRealTitle")) { */
			var realTitle = document.getElementById("RealTitle");
			if (realTitle) {
				var realTitleHTML = realTitle.innerHTML;
				realTitleText = pickUpText(realTitle);		// TODO: replace this with something like "realText"

				var isPasteable = 0;
				//var containsHTML = /</.test(realTitleHTML);	// contains ANY HTML
				var containsTooMuchHTML = /</.test( realTitleHTML.replace(/<\/?(sub|sup|small)>/gi, "") );	// contains HTML that will be ignored when cut-n-pasted as a wikilink

				// calculate whether the title is pasteable
				var verifyTitle = realTitleText.replace(/^ +/, "");		// trim left spaces
				verifyTitle = verifyTitle.charAt(0).toUpperCase() + verifyTitle.substring(1, verifyTitle.length);	// uppercase first character

				// if the namespace prefix is there, remove it on our verification copy.  If it isn't there, add it to the original realValue copy.
				if (wgNamespaceNumber != 0) {
					if (wgCanonicalNamespace == verifyTitle.substr(0, wgCanonicalNamespace.length).replace(/ /g, "_") && verifyTitle.charAt(wgCanonicalNamespace.length) == ":") {
						verifyTitle = verifyTitle.substr(wgCanonicalNamespace.length + 1);
					} else {
						realTitleText = wgCanonicalNamespace.replace(/_/g, " ") + ":" + realTitleText;
						realTitleHTML = wgCanonicalNamespace.replace(/_/g, " ") + ":" + realTitleHTML;
					}
				}

				// verify whether wgTitle matches
				verifyTitle = verifyTitle.replace(/^ +/, "").replace(/ +$/, "");		// trim left and right spaces
				verifyTitle = verifyTitle.replace(/_/g, " ");		// underscores to spaces
				verifyTitle = verifyTitle.charAt(0).toUpperCase() + verifyTitle.substring(1, verifyTitle.length);	// uppercase first character
				isPasteable = (verifyTitle == wgTitle);

				var h1 = document.getElementsByTagName("h1")[0];
				if (h1 && isPasteable) {
					h1.innerHTML = containsTooMuchHTML ? realTitleText : realTitleHTML;
					if (!containsTooMuchHTML)
						realTitleBanner.style.display = "none";
				}
				document.title = realTitleText + " - Wikipedia, the free encyclopedia";
			}
		}
	} catch (e) {
		/* Something went wrong. */
	}
});


// similar to innerHTML, but only returns the text portions of the insides, excludes HTML
function pickUpText(aParentElement) {
  var str = "";

  function pickUpTextInternal(aElement) {
    var child = aElement.firstChild;
    while (child) {
      if (child.nodeType == 1)		// ELEMENT_NODE 
        pickUpTextInternal(child);
      else if (child.nodeType == 3)	// TEXT_NODE
        str += child.nodeValue;

      child = child.nextSibling;
    }
  }

  pickUpTextInternal(aParentElement);

  return str;
}
// ^^^^ end "technical restrictions" title fix ^^^^
//============================================================

/*
</pre>
*/