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/**
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* Stupid Fixed Header 1.0.1 - jQuery plugins to create a fixed headers
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*
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* Require: jQuery 1.2.6
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* Author: Jacky See
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* Blog: http://jacky.seezone.net
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* email: jackysee at gmail dot com
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* Dual licensed under the MIT and GPL licenses:
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* http://www.opensource.org/licenses/mit-license.php
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* http://www.gnu.org/licenses/gpl.html
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*/
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(function($){
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/* created fixed headers , require jquery dimenions plugins*/
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$.fn.fixedHeader = function(o){
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var s = {adjustWidth: $.fixedHeader.calcWidth};
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if(o) $.extend(s,o);
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return this.each(function(){
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var table = $(this); //table
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var tId = this.id;
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var scrollBarWidth = $.fixedHeader.getScrollBarWidth();
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var IE6 = $.browser.msie && $.browser.version == '6.0';
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//wrap a body container
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var bodyContainer = table.wrap('<div></div>').parent()
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.attr('id', tId + "_body_container")
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.css({
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width: s.width,
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height: s.height,
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overflow: 'auto'
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});
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//Wrap with an overall container
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var tableContainer = bodyContainer.wrap('<div></div>').parent()
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.attr('id', tId + '_table_container')
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.css('position','relative');
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//clone the header
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var headerContainer = $(document.createElement('div'))
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.attr('id', tId + '_header_container')
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.css({
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width: bodyContainer.innerWidth() - scrollBarWidth,
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height: table.find('thead').outerHeight(),
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overflow: 'hidden',
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top: 0, left:0
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})
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.prependTo(tableContainer);
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var headerTable = table.clone(true)
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.find('tbody').remove().end()
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.attr('id',tId + "_header")
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.addClass(s.tableClass || table[0].className)
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.css({
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//width: $.browser.msie? table.outerWidth():table.width(),
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'table-layout':'fixed',
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position:'absolute',
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top:0, left:0
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})
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.append(table.find('thead').clone(true))
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.appendTo(headerContainer);
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//sync header width
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var headThs = headerTable.find('th');
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table.find('th').each(function(i){
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headThs.eq(i).css('width', s.adjustWidth(this));
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})
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//sync scroll
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var selects = IE6? table.find("select"): null;
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bodyContainer.scroll(function(){
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if(IE6 && selects.size()>0){
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selects.each(function(i){
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this.style.visibility =
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($(this).offset().top - bodyContainer.offset().top) <= table.find("thead").outerHeight() + 10
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? 'hidden':'visible';
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});
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}
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headerTable.css({
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left: '-' + $(this).scrollLeft() + 'px'
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});
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})
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//Move it down
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headerContainer.css({
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'position': 'absolute',
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'top': 0
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});
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});
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}
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$.fixedHeader = {
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calcWidth: function(th){
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var w = $(th).width();
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var paddingLeft = $.fixedHeader.getComputedStyleInPx(th,'paddingLeft');
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var paddingRight = $.fixedHeader.getComputedStyleInPx(th,'paddingRight');
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var borderWidth = $.fixedHeader.getComputedStyleInPx(th,'borderRightWidth');
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if($.browser.msie) w = w+borderWidth;
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if($.browser.opera) w = w+borderWidth;
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if($.browser.safari) w = w+paddingLeft+paddingRight+borderWidth*2;
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if($.browser.mozilla && parseFloat($.browser.version) <= 1.8) w=w+borderWidth; //FF2 still got a border-left missing problem, this is the best I can do.
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return w;
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},
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getComputedStyleInPx: function(elem,style){
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var computedStyle = (typeof elem.currentStyle != 'undefined')
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?elem.currentStyle
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:document.defaultView.getComputedStyle(elem, null);
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var val = computedStyle[style];
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val = val? parseInt(val.replace("px","")):0;
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return (!val || val == 'NaN')?0:val;
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},
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getScrollBarWidth: function() { //calculate or get from global the scroll bar width
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if(!$.fixedHeader.scrollBarWidth){
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var inner = $(document.createElement('p')).css({width:'100%',height:'100%'});
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var outer = $(document.createElement('div'))
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.css({
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position:'absolute',
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top: '0px',
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left: '0px',
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visibility: 'hidden',
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width: '200px',
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height: '150px',
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overflow: 'hidden'
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})
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.append(inner)
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.appendTo(document.body);
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var w1 = inner[0].offsetWidth;
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outer[0].style.overflow = 'scroll';
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var w2 = inner[0].offsetWidth;
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if (w1 == w2) w2 = outer[0].clientWidth;
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document.body.removeChild (outer[0]);
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$.fixedHeader.scrollBarWidth = (w1 - w2);
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}
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return $.fixedHeader.scrollBarWidth;
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}
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}
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})(jQuery);
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