Difference between revisions of "MediaWiki:Common.js"

Revision as of 12:36, 1 November 2011

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

/** Collapsible tables *********************************************************
 *
 *  Description: Allows tables to be collapsed, showing only the header. See
 *               http://www.mediawiki.org/wiki/Manual:Collapsible_tables.
 *  Maintainers: [[**MAINTAINERS**]]
 */
var autoCollapse = 2;
var collapseCaption = 'hide';
var expandCaption = 'show';
 
function collapseTable( tableIndex ) {
	var Button = document.getElementById( 'collapseButton' + tableIndex );
	var Table = document.getElementById( 'collapsibleTable' + tableIndex );
 
	if ( !Table || !Button ) {
		return false;
	}
 
	var Rows = Table.rows;
 
	if ( Button.firstChild.data == collapseCaption ) {
		for ( var i = 1; i < Rows.length; i++ ) {
			Rows[i].style.display = 'none';
		}
		Button.firstChild.data = expandCaption;
	} else {
		for ( var i = 1; i < Rows.length; i++ ) {
			Rows[i].style.display = Rows[0].style.display;
		}
		Button.firstChild.data = collapseCaption;
	}
}
 
function createCollapseButtons() {
	var tableIndex = 0;
	var NavigationBoxes = new Object();
	var Tables = document.getElementsByTagName( 'table' );
 
	for ( var i = 0; i < Tables.length; i++ ) {
		if ( hasClass( Tables[i], 'collapsible' ) ) {
			/* only add button and increment count if there is a header row to work with */
			var HeaderRow = Tables[i].getElementsByTagName( 'tr' )[0];
			if( !HeaderRow ) continue;
			var Header = HeaderRow.getElementsByTagName( 'th' )[0];
			if( !Header ) continue;
 
			NavigationBoxes[tableIndex] = Tables[i];
			Tables[i].setAttribute( 'id', 'collapsibleTable' + tableIndex );
 
			var Button     = document.createElement( 'span' );
			var ButtonLink = document.createElement( 'a' );
			var ButtonText = document.createTextNode( collapseCaption );
 
			Button.className = 'collapseButton'; // Styles are declared in MediaWiki:Common.css
 
			ButtonLink.style.color = Header.style.color;
			ButtonLink.setAttribute( 'id', 'collapseButton' + tableIndex );
			ButtonLink.setAttribute( 'href', "javascript:collapseTable(" + tableIndex + ");" );
			ButtonLink.appendChild( ButtonText );
 
			Button.appendChild( document.createTextNode( '[' ) );
			Button.appendChild( ButtonLink );
			Button.appendChild( document.createTextNode( ']' ) );
 
			Header.insertBefore( Button, Header.childNodes[0] );
			tableIndex++;
		}
	}
 
	for ( var i = 0;  i < tableIndex; i++ ) {
		if ( hasClass( NavigationBoxes[i], 'collapsed' ) || ( tableIndex >= autoCollapse && hasClass( NavigationBoxes[i], 'autocollapse' ) ) ) {
			collapseTable( i );
		}
	}
}
 
addOnloadHook( createCollapseButtons );
 
/** Test if an element has a certain class **************************************
 *
 * Description: Uses regular expressions and caching for better performance.
 * Maintainers: [[User:Mike Dillon]], [[User:R. Koot]], [[User:SG]]
 */
 
var hasClass = (function() {
	var reCache = {};
	return function( element, className ) {
		return (reCache[className] ? reCache[className] : (reCache[className] = new RegExp("(?:\\s|^)" + className + "(?:\\s|$)"))).test(element.className);
	};
})();

/** Eve University Tooltip *********************************************************
 *
 *  Description: Allows easy use of auto-generated tooltip
 *               http://wiki.eveuniversity.org/Template:Tooltip
 *  Maintainers: Sarah Schneider
 **********************************************************/
 var _tooltipClassName = 'uniwiki-tooltip';
 var _tooltipFrameClassName = 'uniwiki-tooltip-frame';
 var _activeTooltipIdx = -1;
function checkElementByClassComp() {
	if (document.getElementsByClassName == undefined) {
		document.getElementsByClassName = function(className)
		{
			var hasClassName = new RegExp("(?:^|\\s)" + className + "(?:$|\\s)");
			var allElements = document.getElementsByTagName("*");
			var results = [];

			var element;
			for (var i = 0; (element = allElements[i]) != null; i++) {
				var elementClass = element.className;
				if (elementClass && elementClass.indexOf(className) != -1 && hasClassName.test(elementClass))
					results.push(element);
			}
			return results;
		}
	}
}
function createTooltipTrigger() {
	var tooltips = document.getElementsByClassName(_tooltipClassName);
	for(var i=0;i<tooltips.length;i++) {
		tooltips[i].setAttribute( 'id', 'tooltipidx-' + i );
		tooltips[i].setAttribute( 'onmouseover', 'showTooltip(' + i + ')' );
		tooltips[i].setAttribute( 'onmouseout', 'hideTooltip()');
		
		var matchFrameClassName = new RegExp("(?:^|\\s)" + _tooltipFrameClassName + "(?:$|\\s)");
		var innerTooltipEls = tooltips[i].getElementsByTagName('*');
		for(var j=0;(innerEl = innerTooltipEls[j]) != null;j++) {
			if(innerEl.className && innerEl.className.indexOf(_tooltipFrameClassName) != -1 && matchFrameClassName.test(innerEl.className)) {
				innerTooltipEls[j].setAttribute( 'id', 'tooltipframeidx-' + i ); break;
			}
		}
	}
}
function tooltipMouseHandler(e) {
	if (!e){ e = window.event; }
	mouseX = null; mouseY = null;
	if(e.pageX && e.pageY) { mouseX = e.pageX; mouseY = e.pageY; }
	else if(e.clientX && e.clientY) {
		mouseX = e.clientX + (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);
		mouseY = e.clientY + (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);
	}
	moveTooltip(mouseX, mouseY, e);
}
function moveTooltip(x, y, e) {
	if(_activeTooltipIdx != -1) {
		var parentObj = document.getElementById('tooltipframeidx-' + _activeTooltipIdx);
		var parentPos = getRelativeCoordinates(e, parentObj);
		parentObj.style.left = (x - parentPos.x) + 'px';
		parentObj.style.top = (y - parentPos.y) + 'px';
	}
	return false;
} 
function = getRelativeCoordinates(event, reference) {
    var x, y;
    event = event || window.event;
    var el = event.target || event.srcElement;

    if (!window.opera && typeof event.offsetX != 'undefined') {
      // Use offset coordinates and find common offsetParent
      var pos = { x: event.offsetX, y: event.offsetY };

      // Send the coordinates upwards through the offsetParent chain.
      var e = el;
      while (e) {
        e.mouseX = pos.x;
        e.mouseY = pos.y;
        pos.x += e.offsetLeft;
        pos.y += e.offsetTop;
        e = e.offsetParent;
      }

      // Look for the coordinates starting from the reference element.
      var e = reference;
      var offset = { x: 0, y: 0 }
      while (e) {
        if (typeof e.mouseX != 'undefined') {
          x = e.mouseX - offset.x;
          y = e.mouseY - offset.y;
          break;
        }
        offset.x += e.offsetLeft;
        offset.y += e.offsetTop;
        e = e.offsetParent;
      }

      // Reset stored coordinates
      e = el;
      while (e) {
        e.mouseX = undefined;
        e.mouseY = undefined;
        e = e.offsetParent;
      }
    }
    else {
      // Use absolute coordinates
      var pos = getAbsolutePosition(reference);
      x = event.pageX  - pos.x;
      y = event.pageY - pos.y;
    }
    // Subtract distance to middle
    return { x: x, y: y };
  }
function showTooltip(id) {
	_activeTooltipIdx = id;
	document.onmousemove = tooltipMouseHandler;
	document.getElementById( 'tooltipframeidx-' + id ).style.display = 'block';
}
function hideTooltip() {
	_activeTooltipIdx = -1;
	document.onmousemove = null;
	var allTooltip = document.getElementsByClassName(_tooltipFrameClassName);
	for(var i=0;(tooltipEl = allTooltip[i]) != null;i++) {
		tooltipEl.style.display = 'none';
	}	
} 
addOnloadHook(checkElementByClassComp);
addOnloadHook(createTooltipTrigger);