Update doc
git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@796268 13f79535-47bb-0310-9956-ffa450edef68
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+
+/*
+ * Supersubs v0.2b - jQuery plugin
+ * Copyright (c) 2008 Joel Birch
+ *
+ * Dual licensed under the MIT and GPL licenses:
+ * http://www.opensource.org/licenses/mit-license.php
+ * http://www.gnu.org/licenses/gpl.html
+ *
+ *
+ * This plugin automatically adjusts submenu widths of suckerfish-style menus to that of
+ * their longest list item children. If you use this, please expect bugs and report them
+ * to the jQuery Google Group with the word 'Superfish' in the subject line.
+ *
+ */
+
+;(function($){ // $ will refer to jQuery within this closure
+
+ $.fn.supersubs = function(options){
+ var opts = $.extend({}, $.fn.supersubs.defaults, options);
+ // return original object to support chaining
+ return this.each(function() {
+ // cache selections
+ var $$ = $(this);
+ // support metadata
+ var o = $.meta ? $.extend({}, opts, $$.data()) : opts;
+ // get the font size of menu.
+ // .css('fontSize') returns various results cross-browser, so measure an em dash instead
+ var fontsize = $('<li id="menu-fontsize">—</li>').css({
+ 'padding' : 0,
+ 'position' : 'absolute',
+ 'top' : '-999em',
+ 'width' : 'auto'
+ }).appendTo($$).width(); //clientWidth is faster, but was incorrect here
+ // remove em dash
+ $('#menu-fontsize').remove();
+ // cache all ul elements
+ $ULs = $$.find('ul');
+ // loop through each ul in menu
+ $ULs.each(function(i) {
+ // cache this ul
+ var $ul = $ULs.eq(i);
+ // get all (li) children of this ul
+ var $LIs = $ul.children();
+ // get all anchor grand-children
+ var $As = $LIs.children('a');
+ // force content to one line and save current float property
+ var liFloat = $LIs.css('white-space','nowrap').css('float');
+ // remove width restrictions and floats so elements remain vertically stacked
+ var emWidth = $ul.add($LIs).add($As).css({
+ 'float' : 'none',
+ 'width' : 'auto'
+ })
+ // this ul will now be shrink-wrapped to longest li due to position:absolute
+ // so save its width as ems. Clientwidth is 2 times faster than .width() - thanks Dan Switzer
+ .end().end()[0].clientWidth / fontsize;
+ // add more width to ensure lines don't turn over at certain sizes in various browsers
+ emWidth += o.extraWidth;
+ // restrict to at least minWidth and at most maxWidth
+ if (emWidth > o.maxWidth) { emWidth = o.maxWidth; }
+ else if (emWidth < o.minWidth) { emWidth = o.minWidth; }
+ emWidth += 'em';
+ // set ul to width in ems
+ $ul.css('width',emWidth);
+ // restore li floats to avoid IE bugs
+ // set li width to full width of this ul
+ // revert white-space to normal
+ $LIs.css({
+ 'float' : liFloat,
+ 'width' : '100%',
+ 'white-space' : 'normal'
+ })
+ // update offset position of descendant ul to reflect new width of parent
+ .each(function(){
+ var $childUl = $('>ul',this);
+ var offsetDirection = $childUl.css('left')!==undefined ? 'left' : 'right';
+ $childUl.css(offsetDirection,emWidth);
+ });
+ });
+
+ });
+ };
+ // expose defaults
+ $.fn.supersubs.defaults = {
+ minWidth : 9, // requires em unit.
+ maxWidth : 25, // requires em unit.
+ extraWidth : 0 // extra width can ensure lines don't sometimes turn over due to slight browser differences in how they round-off values
+ };
+
+})(jQuery); // plugin code ends