wikibits.js

DHT的入门介绍

		range.select();   
		//restore window scroll position
		if (document.documentElement && document.documentElement.scrollTop)
			document.documentElement.scrollTop = winScroll
		else if (document.body)
			document.body.scrollTop = winScroll;

	} else if (txtarea.selectionStart || txtarea.selectionStart == '0') { // Mozilla

		//save textarea scroll position
		var textScroll = txtarea.scrollTop;
		//get current selection
		txtarea.focus();
		var startPos = txtarea.selectionStart;
		var endPos = txtarea.selectionEnd;
		selText = txtarea.value.substring(startPos, endPos);
		//insert tags
		checkSelectedText();
		txtarea.value = txtarea.value.substring(0, startPos)
			+ tagOpen + selText + tagClose
			+ txtarea.value.substring(endPos, txtarea.value.length);
		//set new selection
		if (isSample) {
			txtarea.selectionStart = startPos + tagOpen.length;
			txtarea.selectionEnd = startPos + tagOpen.length + selText.length;
		} else {
			txtarea.selectionStart = startPos + tagOpen.length + selText.length + tagClose.length;
			txtarea.selectionEnd = txtarea.selectionStart;
		}
		//restore textarea scroll position
		txtarea.scrollTop = textScroll;
	} 

	function checkSelectedText(){
		if (!selText) {
			selText = sampleText;
			isSample = true;
		} else if (selText.charAt(selText.length - 1) == ' ') { //exclude ending space char
			selText = selText.substring(0, selText.length - 1);
			tagClose += ' '
		} 
	}

}


/**
 * Set the accesskey prefix based on browser detection.
 */
var tooltipAccessKeyPrefix = 'alt-';
if (is_opera) {
	tooltipAccessKeyPrefix = 'shift-esc-';
} else if (is_safari
	   || navigator.userAgent.toLowerCase().indexOf('mac') != -1
	   || navigator.userAgent.toLowerCase().indexOf('konqueror') != -1 ) {
	tooltipAccessKeyPrefix = 'ctrl-';
} else if (is_ff2_x11 || is_ff2_win) {
	tooltipAccessKeyPrefix = 'alt-shift-';
}
var tooltipAccessKeyRegexp = /\[(ctrl-)?(alt-)?(shift-)?(esc-)?.\]$/;

/**
 * Add the appropriate prefix to the accesskey shown in the tooltip.
 * If the nodeList parameter is given, only those nodes are updated;
 * otherwise, all the nodes that will probably have accesskeys by
 * default are updated.
 *
 * @param Array nodeList -- list of elements to update
 */
function updateTooltipAccessKeys( nodeList ) {
	if ( !nodeList ) {
		// skins without a "column-one" element don't seem to have links with accesskeys either
		var columnOne = document.getElementById("column-one");
		if ( columnOne )
			updateTooltipAccessKeys( columnOne.getElementsByTagName("a") );
		// these are rare enough that no such optimization is needed
		updateTooltipAccessKeys( document.getElementsByTagName("input") );
		updateTooltipAccessKeys( document.getElementsByTagName("label") );
		return;
	}

	for ( var i = 0; i < nodeList.length; i++ ) {
		var element = nodeList[i];
		var tip = element.getAttribute("title");
		var key = element.getAttribute("accesskey");
		if ( key && tooltipAccessKeyRegexp.exec(tip) ) {
			tip = tip.replace(tooltipAccessKeyRegexp,
					  "["+tooltipAccessKeyPrefix+key+"]");
			element.setAttribute("title", tip );
		}
	}
}

/**
 * Add a link to one of the portlet menus on the page, including:
 *
 * p-cactions: Content actions (shown as tabs above the main content in Monobook)
 * p-personal: Personal tools (shown at the top right of the page in Monobook)
 * p-navigation: Navigation
 * p-tb: Toolbox
 *
 * This function exists for the convenience of custom JS authors.  All
 * but the first three parameters are optional, though providing at
 * least an id and a tooltip is recommended.
 *
 * By default the new link will be added to the end of the list.  To
 * add the link before a given existing item, pass the DOM node of
 * that item (easily obtained with document.getElementById()) as the
 * nextnode parameter; to add the link _after_ an existing item, pass
 * the node's nextSibling instead.
 *
 * @param String portlet -- id of the target portlet ("p-cactions", "p-personal", "p-navigation" or "p-tb")
 * @param String href -- link URL
 * @param String text -- link text (will be automatically lowercased by CSS for p-cactions in Monobook)
 * @param String id -- id of the new item, should be unique and preferably have the appropriate prefix ("ca-", "pt-", "n-" or "t-")
 * @param String tooltip -- text to show when hovering over the link, without accesskey suffix
 * @param String accesskey -- accesskey to activate this link (one character, try to avoid conflicts)
 * @param Node nextnode -- the DOM node before which the new item should be added, should be another item in the same list
 *
 * @return Node -- the DOM node of the new item (an LI element) or null
 */
function addPortletLink(portlet, href, text, id, tooltip, accesskey, nextnode) {
	var node = document.getElementById(portlet);
	if ( !node ) return null;
	node = node.getElementsByTagName( "ul" )[0];
	if ( !node ) return null;

	var link = document.createElement( "a" );
	link.appendChild( document.createTextNode( text ) );
	link.href = href;

	var item = document.createElement( "li" );
	item.appendChild( link );
	if ( id ) item.id = id;

	if ( accesskey ) {
		link.setAttribute( "accesskey", accesskey );
		tooltip += " ["+accesskey+"]";
	}
	if ( tooltip ) {
		link.setAttribute( "title", tooltip );
	}
	if ( accesskey && tooltip ) {
		updateTooltipAccessKeys( new Array( link ) );
	}

	if ( nextnode && nextnode.parentNode == node )
		node.insertBefore( item, nextnode );
	else
		node.appendChild( item );  // IE compatibility (?)

	return item;
}


/**
 * Set up accesskeys/tooltips from the deprecated ta array.  If doId
 * is specified, only set up for that id.  Note that this function is
 * deprecated and will not be supported indefinitely -- use
 * updateTooltipAccessKey() instead.
 *
 * @param mixed doId string or null
 */
function akeytt( doId ) {
	// A lot of user scripts (and some of the code below) break if
	// ta isn't defined, so we make sure it is.  Explictly using
	// window.ta avoids a "ta is not defined" error.
	if (!window.ta) window.ta = new Array;

	// Make a local, possibly restricted, copy to avoid clobbering
	// the original.
	var ta;
	if ( doId ) {
		ta = [doId];
	} else {
		ta = window.ta;
	}

	// Now deal with evil deprecated ta
	var watchCheckboxExists = document.getElementById( 'wpWatchthis' ) ? true : false;
	for (var id in ta) {
		var n = document.getElementById(id);
		if (n) {
			var a = null;
			var ak = '';
			// Are we putting accesskey in it
			if (ta[id][0].length > 0) {
				// Is this object a object? If not assume it's the next child.

				if (n.nodeName.toLowerCase() == "a") {
					a = n;
				} else {
					a = n.childNodes[0];
				}
			 	// Don't add an accesskey for the watch tab if the watch
			 	// checkbox is also available.
				if (a && ((id != 'ca-watch' && id != 'ca-unwatch') || !watchCheckboxExists)) {
					a.accessKey = ta[id][0];
					ak = ' ['+tooltipAccessKeyPrefix+ta[id][0]+']';
				}
			} else {
				// We don't care what type the object is when assigning tooltip
				a = n;
				ak = '';
			}

			if (a) {
				a.title = ta[id][1]+ak;
			}
		}
	}
}

function setupRightClickEdit() {
	if (document.getElementsByTagName) {
		var spans = document.getElementsByTagName('span');
		for (var i = 0; i < spans.length; i++) {
			var el = spans[i];
			if(el.className == 'editsection') {
				addRightClickEditHandler(el);
			}
		}
	}
}

function addRightClickEditHandler(el) {
	for (var i = 0; i < el.childNodes.length; i++) {
		var link = el.childNodes[i];
		if (link.nodeType == 1 && link.nodeName.toLowerCase() == 'a') {
			var editHref = link.getAttribute('href');
			// find the enclosing (parent) header
			var prev = el.parentNode;
			if (prev && prev.nodeType == 1 &&
			prev.nodeName.match(/^[Hh][1-6]$/)) {
				prev.oncontextmenu = function(e) {
					if (!e) { e = window.event; }
					// e is now the event in all browsers
					var targ;
					if (e.target) { targ = e.target; }
					else if (e.srcElement) { targ = e.srcElement; }
					if (targ.nodeType == 3) { // defeat Safari bug
						targ = targ.parentNode;
					}
					// targ is now the target element

					// We don't want to deprive the noble reader of a context menu
					// for the section edit link, do we?  (Might want to extend this
					// to all <a>'s?)
					if (targ.nodeName.toLowerCase() != 'a'
					|| targ.parentNode.className != 'editsection') {
						document.location = editHref;
						return false;
					}
					return true;
				};
			}
		}
	}
}

var checkboxes;
var lastCheckbox;

function setupCheckboxShiftClick() {
	checkboxes = [];
	lastCheckbox = null;
	var inputs = document.getElementsByTagName('input');
	addCheckboxClickHandlers(inputs);
}

function addCheckboxClickHandlers(inputs, start) {
	if ( !start) start = 0;

	var finish = start + 250;
	if ( finish > inputs.length )
		finish = inputs.length;

	for ( var i = start; i < finish; i++ ) {
		var cb = inputs[i];
		if ( !cb.type || cb.type.toLowerCase() != 'checkbox' )
			continue;
		var end = checkboxes.length;
		checkboxes[end] = cb;
		cb.index = end;
		cb.onclick = checkboxClickHandler;
	}

	if ( finish < inputs.length ) {
		setTimeout( function () {
			addCheckboxClickHandlers(inputs, finish);
		}, 200 );
	}
}

function checkboxClickHandler(e) {
	if (typeof e == 'undefined') {
		e = window.event;
	}
	if ( !e.shiftKey || lastCheckbox === null ) {
		lastCheckbox = this.index;
		return true;
	}
	var endState = this.checked;
	var start, finish;
	if ( this.index < lastCheckbox ) {
		start = this.index + 1;
		finish = lastCheckbox;
	} else {
		start = lastCheckbox;
		finish = this.index - 1;
	}
	for (var i = start; i <= finish; ++i ) {
		checkboxes[i].checked = endState;
	}
	lastCheckbox = this.index;
	return true;
}

function toggle_element_activation(ida,idb) {
	if (!document.getElementById) {
		return;
	}
	document.getElementById(ida).disabled=true;
	document.getElementById(idb).disabled=false;
}

function toggle_element_check(ida,idb) {
	if (!document.getElementById) {
		return;
	}
	document.getElementById(ida).checked=true;
	document.getElementById(idb).checked=false;
}

/**
 * Restore the edit box scroll state following a preview operation,
 * and set up a form submission handler to remember this state
 */
function scrollEditBox() {
	var editBox = document.getElementById( 'wpTextbox1' );
	var scrollTop = document.getElementById( 'wpScrolltop' );
	var editForm = document.getElementById( 'editform' );
	if( editBox && scrollTop ) {
		if( scrollTop.value )
			editBox.scrollTop = scrollTop.value;
		addHandler( editForm, 'submit', function() {
			document.getElementById( 'wpScrolltop' ).value = document.getElementById( 'wpTextbox1' ).scrollTop; 
		} );
	}
}
hookEvent( 'load', scrollEditBox );

var allmessages_nodelist = false;
var allmessages_modified = false;
var allmessages_timeout = false;
var allmessages_running = false;

function allmessagesmodified() {
	allmessages_modified = !allmessages_modified;
	allmessagesfilter();
}

function allmessagesfilter() {
	if ( allmessages_timeout )
		window.clearTimeout( allmessages_timeout );

	if ( !allmessages_running )
		allmessages_timeout = window.setTimeout( 'allmessagesfilter_do();', 500 );
}

function allmessagesfilter_do() {
	if ( !allmessages_nodelist )
		return;

	var text = document.getElementById('allmessagesinput').value;
	var nodef = allmessages_modified;

	allmessages_running = true;

	for ( var name in allmessages_nodelist ) {
		var nodes = allmessages_nodelist[name];
		var display = ( name.indexOf( text ) == -1 ? 'none' : '' );

		for ( var i = 0; i < nodes.length; i++)
			nodes[i].style.display =
				( nodes[i].className == "def" && nodef
				  ? 'none' : display );
	}

	if ( text != document.getElementById('allmessagesinput').value ||
	     nodef != allmessages_modified )
		allmessagesfilter_do();  // repeat

	allmessages_running = false;
}

function allmessagesfilter_init() {
	if ( allmessages_nodelist )
		return;

	var nodelist = new Array();
	var templist = new Array();

	var table = document.getElementById('allmessagestable');
	if ( !table ) return;

	var rows = document.getElementsByTagName('tr');
	for ( var i = 0; i < rows.length; i++ ) {
		var id = rows[i].getAttribute('id')
		if ( id && id.substring(0,16) != 'sp-allmessages-r' ) continue;
		templist[ id ] = rows[i];
	}

	var spans = table.getElementsByTagName('span');
	for ( var i = 0; i < spans.length; i++ ) {
		var id = spans[i].getAttribute('id')
		if ( id && id.substring(0,17) != 'sp-allmessages-i-' ) continue;
		if ( !spans[i].firstChild || spans[i].firstChild.nodeType != 3 ) continue;

		var nodes = new Array();
		var row1 = templist[ id.replace('i', 'r1') ];
		var row2 = templist[ id.replace('i', 'r2') ];

		if ( row1 ) nodes[nodes.length] = row1;
		if ( row2 ) nodes[nodes.length] = row2;
		nodelist[ spans[i].firstChild.nodeValue ] = nodes;
	}

	var k = document.getElementById('allmessagesfilter');
	if (k) { k.style.display = ''; }

	allmessages_nodelist = nodelist;
}

hookEvent( "load", allmessagesfilter_init );

/*
	Written by Jonathan Snook, http://www.snook.ca/jonathan
	Add-ons by Robert Nyman, http://www.robertnyman.com
	Author says "The credit comment is all it takes, no license. Go crazy with it!:-)"
	From http://www.robertnyman.com/2005/11/07/the-ultimate-getelementsbyclassname/
*/
function getElementsByClassName(oElm, strTagName, oClassNames){
	var arrElements = (strTagName == "*" && oElm.all)? oElm.all : oElm.getElementsByTagName(strTagName);
	var arrReturnElements = new Array();
	var arrRegExpClassNames = new Array();