Difference between revisions of "MediaWiki:Common.js"

Revision as of 01:58, 3 December 2010

/* Any JavaScript here will be loaded for all users on every page load. */

//*** Dynamic Navigation Bars
 
// set up the words in your language
var NavigationBarHide = 'Hide';
var NavigationBarShow = 'Show';
 
// set up max count of Navigation Bars on page,
// if there are more, all will be hidden
// NavigationBarShowDefault = 0; // all bars will be hidden
// NavigationBarShowDefault = 1; // on pages with more than 1 bar all bars will be hidden
if (typeof NavigationBarShowDefault == 'undefined' ) {
    var NavigationBarShowDefault = 0;
}
 
// adds show/hide-button to navigation bars
addOnloadHook(function() {
	// shows and hides content and picture (if available) of navigation bars
	// Parameters:
	//     indexNavigationBar: the index of navigation bar to be toggled
	function toggleNavigationBar(NavToggle, NavFrame)
	{
	   if (!NavFrame || !NavToggle) {
		   return false;
	   }
 
	   // if shown now
	   if (NavToggle.firstChild.data == NavigationBarHide) {
		   for (
				   var NavChild = NavFrame.firstChild;
				   NavChild != null;
				   NavChild = NavChild.nextSibling
			   ) {
			   if (NavChild.className == 'NavContent') {
				   NavChild.style.display = 'none';
			   }
			   if (NavChild.className == 'NavToggle') {
				   NavChild.firstChild.data = NavigationBarShow;
			   }
		   }
		   setCookie("NavFrame", "false");
	   // if hidden now
	   } else if (NavToggle.firstChild.data == NavigationBarShow) {
		   for (
				   var NavChild = NavFrame.firstChild;
				   NavChild != null;
				   NavChild = NavChild.nextSibling
			   ) {
			   if (NavChild.className == 'NavContent') {
				   NavChild.style.display = 'block';
			   }
			   if (NavChild.className == 'NavToggle') {
				   NavChild.firstChild.data = NavigationBarHide;
			   }
		   }
		   setCookie("NavFrame", "true");
	   }
	}
 
	function toggleNavigationBarFunction(NavToggle, NavFrame) {
		return function() {
			toggleNavigationBar(NavToggle, NavFrame);
			return false;
		};
	}
	// iterate over all NavFrames
	var content	= document.getElementById("content") || document.getElementById("mw_content");
	var NavFrames = getElementsByClassName(content, "div", "NavFrame");
	// if more Navigation Bars found and not template namespace than Default: hide all
	var initiallyToggle	= NavigationBarShowDefault < NavFrames.length && wgNamespaceNumber != 10;
	for (var i=0;  i<NavFrames.length; i++) {
		var NavFrame = NavFrames[i];
		var NavToggle = document.createElement("a");
		NavToggle.className = 'NavToggle';
		NavToggle.setAttribute('href', '#');
 
		var NavToggleText = document.createTextNode(NavigationBarHide);
		NavToggle.appendChild(NavToggleText);
 
		// add NavToggle-Button as first div-element
		// in < div class="NavFrame" >
		NavFrame.insertBefore(NavToggle, NavFrame.firstChild);
 
		NavToggle.onclick = toggleNavigationBarFunction(NavToggle, NavFrame);
		var NavHead = getElementsByClassName(NavFrame, "div", "NavHead");
		NavHead[0].onclick = NavToggle.onclick;

		if ((initiallyToggle) && (getCookie("NavFrame")!="true")) {
			toggleNavigationBar(NavToggle, NavFrame);
		}
	}
});

function getCookie(name)
{
	var value = null;
	if(document.cookie)
	{
		var arr = document.cookie.split((escape(name) + '=')); 
		if(2 <= arr.length)
		{
			var arr2 = arr[1].split(';');
			value  = unescape(arr2[0]);
		}
	}
	return value;
}

function setCookie(name, value)
{
	var cookieText = escape(name) + '=' + escape(value);
	document.cookie = cookieText;
}