src/main/webapp/resources/js/data-table/colResizable-1.5.source.js

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/**
               _ _____           _          _     _      
              | |  __ \         (_)        | |   | |     
      ___ ___ | | |__) |___  ___ _ ______ _| |__ | | ___ 
     / __/ _ \| |  _  // _ \/ __| |_  / _` | '_ \| |/ _ \
    | (_| (_) | | | \ \  __/\__ \ |/ / (_| | |_) | |  __/
     \___\___/|_|_|  \_\___||___/_/___\__,_|_.__/|_|\___|
	 
	v 1.5 - a jQuery plug-in by Alvaro Prieto Lauroba
	
	Licences: MIT & GPL
	Feel free to use or modify this plugin as far as my full name is kept	
	
	If you are going to use this plug-in in production environments it is 
	strongly recommended to use its minified version: colResizable.min.js

*/

(function($){ 	
	
	var d = $(document); 		//window object
	var h = $("head");			//head object
	var drag = null;			//reference to the current grip that is being dragged
	var tables = [];			//array of the already processed tables (table.id as key)
	var	count = 0;				//internal count to create unique IDs when needed.	
	
	//common strings for packing
	var ID = "id";	
	var PX = "px";
	var SIGNATURE ="JColResizer";
    var FLEX = "JCLRFlex";
	
	//short-cuts
	var I = parseInt;
	var M = Math;
	var ie = navigator.userAgent.indexOf('Trident/4.0')>0;
	var S;
	try{S = sessionStorage;}catch(e){}	//Firefox crashes when executed as local file system
	
	//append required CSS rules  
	h.append("<style type='text/css'>  .JColResizer{/*table-layout:fixed;*/} .JColResizer td, .JColResizer th{overflow:hidden;padding-left:0!important; padding-right:0!important;}  .JCLRgrips{ height:0px; position:relative;} .JCLRgrip{margin-left:-5px; position:absolute; z-index:5; } .JCLRgrip .JColResizer{position:absolute;background-color:red;filter:alpha(opacity=1);opacity:0;width:10px;height:100%;cursor: e-resize;top:0px} .JCLRLastGrip{position:absolute; width:1px; } .JCLRgripDrag{ border-left:1px dotted black;	} .JCLRFlex{width:auto!important;}</style>");

	
	/**
	 * Function to allow column resizing for table objects. It is the starting point to apply the plugin.
	 * @param {DOM node} tb - reference to the DOM table object to be enhanced
	 * @param {Object} options	- some customization values
	 */
	var init = function( tb, options){	
		var t = $(tb);										//the table object is wrapped
		t.opt = options;
		if(t.opt.disable) return destroy(t);				//the user is asking to destroy a previously colResized table
		var	id = t.id = t.attr(ID) || SIGNATURE+count++;	//its id is obtained, if null new one is generated		
		t.p = t.opt.postbackSafe; 							//short-cut to detect postback safe 		
		if(!t.is("table") || tables[id] && !t.opt.partialRefresh) return; 		//if the object is not a table or if it was already processed then it is ignored.
		t.addClass(SIGNATURE).attr(ID, id).before('<div class="JCLRgrips"/>');	//the grips container object is added. Signature class forces table rendering in fixed-layout mode to prevent column's min-width
		t.g = []; t.c = []; t.w = t.width(); t.gc = t.prev(); t.f=t.opt.fixed;	//t.c and t.g are arrays of columns and grips respectively				
		if(options.marginLeft) t.gc.css("marginLeft", options.marginLeft);  	//if the table contains margins, it must be specified
		if(options.marginRight) t.gc.css("marginRight", options.marginRight);  	//since there is no (direct) way to obtain margin values in its original units (%, em, ...)
		t.cs = I(ie? tb.cellSpacing || tb.currentStyle.borderSpacing :t.css('border-spacing'))||2;	//table cellspacing (not even jQuery is fully cross-browser)
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