/*
 * File:        ColVis.js
 * Version:     1.0.7
 * CVS:         $Id$
 * Description: Controls for column visiblity in DataTables
 * Author:      Allan Jardine (www.sprymedia.co.uk)
 * Created:     Wed Sep 15 18:23:29 BST 2010
 * Modified:    $Date$ by $Author$
 * Language:    Javascript
 * License:     GPL v2 or BSD 3 point style
 * Project:     Just a little bit of fun :-)
 * Contact:     www.sprymedia.co.uk/contact
 * 
 * Copyright 2010-2011 Allan Jardine, all rights reserved.
 *
 * This source file is free software, under either the GPL v2 license or a
 * BSD style license, available at:
 *   http://datatables.net/license_gpl2
 *   http://datatables.net/license_bsd
 */

(function($){ColVis=function(oDTSettings,oInit){if(!this.CLASS||this.CLASS!="ColVis"){alert("Warning: ColVis must be initialised with the keyword 'new'");}if(typeof oInit=="undefined"){oInit={};}this.s={"dt":null,"oInit":oInit,"fnStateChange":null,"activate":"click","sAlign":"left","buttonText":"Show / hide columns","hidden":true,"aiExclude":[],"abOriginal":[],"bShowAll":false,"sShowAll":"Show All","bRestore":false,"sRestore":"Restore original","iOverlayFade":500,"fnLabel":null,"sSize":"158","bCssPosition":false};this.dom={"wrapper":null,"button":null,"collection":null,"background":null,"catcher":null,"buttons":[],"restore":null};ColVis.aInstances.push(this);this.s.dt=oDTSettings;this._fnConstruct();return this;};ColVis.prototype={"fnRebuild":function(){for(var i=this.dom.buttons.length-1;i>=0;i--){if(this.dom.buttons[i]!==null){this.dom.collection.removeChild(this.dom.buttons[i]);}}this.dom.buttons.splice(0,this.dom.buttons.length);if(this.dom.restore){this.dom.restore.parentNode(this.dom.restore);}this._fnAddButtons();this._fnDrawCallback();},"_fnConstruct":function(){this._fnApplyCustomisation();var that=this;this.dom.wrapper=document.createElement("div");this.dom.wrapper.className="ColVis TableTools";this.dom.button=this._fnDomBaseButton(this.s.buttonText);this.dom.button.className+=" ColVis_MasterButton";this.dom.wrapper.appendChild(this.dom.button);this.dom.catcher=this._fnDomCatcher();this.dom.collection=this._fnDomCollection();this.dom.background=this._fnDomBackground();this._fnAddButtons();for(var i=0,iLen=this.s.dt.aoColumns.length;i<iLen;i++){this.s.abOriginal.push(this.s.dt.aoColumns[i].bVisible);}this.s.dt.aoDrawCallback.push({"fn":function(){that._fnDrawCallback.call(that);},"sName":"ColVis"});},"_fnApplyCustomisation":function(){var oConfig=this.s.oInit;if(typeof oConfig.activate!="undefined"){this.s.activate=oConfig.activate;}if(typeof oConfig.buttonText!="undefined"){this.s.buttonText=oConfig.buttonText;}if(typeof oConfig.aiExclude!="undefined"){this.s.aiExclude=oConfig.aiExclude;}if(typeof oConfig.bRestore!="undefined"){this.s.bRestore=oConfig.bRestore;}if(typeof oConfig.sRestore!="undefined"){this.s.sRestore=oConfig.sRestore;}if(typeof oConfig.bShowAll!="undefined"){this.s.bShowAll=oConfig.bShowAll;}if(typeof oConfig.sShowAll!="undefined"){this.s.sShowAll=oConfig.sShowAll;}if(typeof oConfig.sAlign!="undefined"){this.s.sAlign=oConfig.sAlign;}if(typeof oConfig.fnStateChange!="undefined"){this.s.fnStateChange=oConfig.fnStateChange;}if(typeof oConfig.iOverlayFade!="undefined"){this.s.iOverlayFade=oConfig.iOverlayFade;}if(typeof oConfig.fnLabel!="undefined"){this.s.fnLabel=oConfig.fnLabel;}if(typeof oConfig.sSize!="undefined"){this.s.sSize=oConfig.sSize;}if(typeof oConfig.bCssPosition!="undefined"){this.s.bCssPosition=oConfig.bCssPosition;}},"_fnDrawCallback":function(){var aoColumns=this.s.dt.aoColumns;for(var i=0,iLen=aoColumns.length;i<iLen;i++){if(this.dom.buttons[i]!==null){if(aoColumns[i].bVisible){$("input",this.dom.buttons[i]).attr("checked","checked");}else{$("input",this.dom.buttons[i]).removeAttr("checked");}}}},"_fnAddButtons":function(){var nButton,sExclude=","+this.s.aiExclude.join(",")+",";for(var i=0,iLen=this.s.dt.aoColumns.length;i<iLen;i++){if(sExclude.indexOf(","+i+",")==-1){nButton=this._fnDomColumnButton(i);this.dom.buttons.push(nButton);this.dom.collection.appendChild(nButton);}else{this.dom.buttons.push(null);}}if(this.s.bRestore){nButton=this._fnDomRestoreButton();nButton.className+=" ColVis_Restore";this.dom.buttons.push(nButton);this.dom.collection.appendChild(nButton);}if(this.s.bShowAll){nButton=this._fnDomShowAllButton();nButton.className+=" ColVis_ShowAll";this.dom.buttons.push(nButton);this.dom.collection.appendChild(nButton);}},"_fnDomRestoreButton":function(){var that=this,nButton=document.createElement("button"),nSpan=document.createElement("span");nButton.className=!this.s.dt.bJUI?"ColVis_Button TableTools_Button":"ColVis_Button TableTools_Button ui-button ui-state-default";nButton.appendChild(nSpan);$(nSpan).html('<span class="ColVis_title">'+this.s.sRestore+"</span>");$(nButton).click(function(e){for(var i=0,iLen=that.s.abOriginal.length;i<iLen;i++){that.s.dt.oInstance.fnSetColumnVis(i,that.s.abOriginal[i],false);}that._fnAdjustOpenRows();that.s.dt.oInstance.fnDraw(false);});return nButton;},"_fnDomShowAllButton":function(){var that=this,nButton=document.createElement("button"),nSpan=document.createElement("span");nButton.className=!this.s.dt.bJUI?"ColVis_Button TableTools_Button":"ColVis_Button TableTools_Button ui-button ui-state-default";nButton.appendChild(nSpan);$(nSpan).html('<span class="ColVis_title">'+this.s.sShowAll+"</span>");$(nButton).click(function(e){for(var i=0,iLen=that.s.abOriginal.length;i<iLen;i++){if(that.s.aiExclude.indexOf(i)===-1){that.s.dt.oInstance.fnSetColumnVis(i,true,false);}}that._fnAdjustOpenRows();that.s.dt.oInstance.fnDraw(false);});return nButton;},"_fnDomColumnButton":function(i){var that=this,oColumn=this.s.dt.aoColumns[i],nButton=document.createElement("button"),nSpan=document.createElement("span"),dt=this.s.dt;nButton.className=!dt.bJUI?"ColVis_Button TableTools_Button":"ColVis_Button TableTools_Button ui-button ui-state-default";nButton.appendChild(nSpan);var sTitle=this.s.fnLabel===null?oColumn.sTitle:this.s.fnLabel(i,oColumn.sTitle,oColumn.nTh);$(nSpan).html('<span class="ColVis_radio"><input type="checkbox"/></span>'+'<span class="ColVis_title">'+sTitle+"</span>");$(nButton).click(function(e){var showHide=!$("input",this).is(":checked");if(e.target.nodeName.toLowerCase()=="input"){showHide=$("input",this).is(":checked");}var oldIndex=$.fn.dataTableExt.iApiIndex;$.fn.dataTableExt.iApiIndex=that._fnDataTablesApiIndex.call(that);if(dt.oFeatures.bServerSide&&(dt.oScroll.sX!==""||dt.oScroll.sY!=="")){that.s.dt.oInstance.fnSetColumnVis(i,showHide,false);that.s.dt.oInstance.oApi._fnScrollDraw(that.s.dt);that._fnDrawCallback();}else{that.s.dt.oInstance.fnSetColumnVis(i,showHide);}$.fn.dataTableExt.iApiIndex=oldIndex;if(that.s.fnStateChange!==null){that.s.fnStateChange.call(that,i,showHide);}});return nButton;},"_fnDataTablesApiIndex":function(){for(var i=0,iLen=this.s.dt.oInstance.length;i<iLen;i++){if(this.s.dt.oInstance[i]==this.s.dt.nTable){return i;}}return 0;},"_fnDomBaseButton":function(text){var that=this,nButton=document.createElement("button"),nSpan=document.createElement("span"),sEvent=this.s.activate=="mouseover"?"mouseover":"click";nButton.className=!this.s.dt.bJUI?"ColVis_Button TableTools_Button":"ColVis_Button TableTools_Button ui-button ui-state-default";nButton.appendChild(nSpan);nSpan.innerHTML=text;$(nButton).bind(sEvent,function(e){that._fnCollectionShow();e.preventDefault();});return nButton;},"_fnDomCollection":function(){var that=this;var nHidden=document.createElement("div");nHidden.style.display="none";nHidden.className=!this.s.dt.bJUI?"ColVis_collection TableTools_collection":"ColVis_collection TableTools_collection ui-buttonset ui-buttonset-multi";if(!this.s.bCssPosition){nHidden.style.position="absolute";}$(nHidden).css("opacity",0);return nHidden;},"_fnDomCatcher":function(){var that=this,nCatcher=document.createElement("div");nCatcher.className="ColVis_catcher TableTools_catcher";$(nCatcher).click(function(){that._fnCollectionHide.call(that,null,null);});return nCatcher;},"_fnDomBackground":function(){var that=this;var nBackground=document.createElement("div");nBackground.style.position="absolute";nBackground.style.left="0px";nBackground.style.top="0px";nBackground.className="ColVis_collectionBackground TableTools_collectionBackground";$(nBackground).css("opacity",0);$(nBackground).click(function(){that._fnCollectionHide.call(that,null,null);});if(this.s.activate=="mouseover"){$(nBackground).mouseover(function(){that.s.overcollection=false;that._fnCollectionHide.call(that,null,null);});}return nBackground;},"_fnCollectionShow":function(){var that=this,i,iLen;var oPos=$(this.dom.button).offset();var nHidden=this.dom.collection;var nBackground=this.dom.background;var iDivX=parseInt(oPos.left,10);var iDivY=parseInt(oPos.top+$(this.dom.button).outerHeight(),10);if(!this.s.bCssPosition){nHidden.style.top=iDivY+"px";nHidden.style.left=iDivX+"px";}nHidden.style.display="block";$(nHidden).css("opacity",0);var iWinHeight=$(window).height(),iDocHeight=$(document).height(),iWinWidth=$(window).width(),iDocWidth=$(document).width();nBackground.style.height=((iWinHeight>iDocHeight)?iWinHeight:iDocHeight)+"px";nBackground.style.width=((iWinWidth<iDocWidth)?iWinWidth:iDocWidth)+"px";var oStyle=this.dom.catcher.style;oStyle.height=$(this.dom.button).outerHeight()+"px";oStyle.width=$(this.dom.button).outerWidth()+"px";oStyle.top=oPos.top+"px";oStyle.left=iDivX+"px";document.body.appendChild(nBackground);document.body.appendChild(nHidden);document.body.appendChild(this.dom.catcher);if(this.s.sSize=="auto"){var aiSizes=[];this.dom.collection.style.width="auto";for(i=0,iLen=this.dom.buttons.length;i<iLen;i++){if(this.dom.buttons[i]!==null){this.dom.buttons[i].style.width="auto";aiSizes.push($(this.dom.buttons[i]).outerWidth());}}iMax=Math.max.apply(window,aiSizes);for(i=0,iLen=this.dom.buttons.length;i<iLen;i++){if(this.dom.buttons[i]!==null){this.dom.buttons[i].style.width=iMax+"px";}}this.dom.collection.style.width=iMax+"px";}if(!this.s.bCssPosition){nHidden.style.left=this.s.sAlign=="left"?iDivX+"px":(iDivX-$(nHidden).outerWidth()+$(this.dom.button).outerWidth())+"px";var iDivWidth=$(nHidden).outerWidth();var iDivHeight=$(nHidden).outerHeight();if(iDivX+iDivWidth>iDocWidth){nHidden.style.left=(iDocWidth-iDivWidth)+"px";}}setTimeout(function(){$(nHidden).animate({"opacity":1},that.s.iOverlayFade);$(nBackground).animate({"opacity":0.1},that.s.iOverlayFade,"linear",function(){if(jQuery.browser.msie&&jQuery.browser.version=="6.0"){that._fnDrawCallback();}});},10);this.s.hidden=false;},"_fnCollectionHide":function(){var that=this;if(!this.s.hidden&&this.dom.collection!==null){this.s.hidden=true;$(this.dom.collection).animate({"opacity":0},that.s.iOverlayFade,function(e){this.style.display="none";});$(this.dom.background).animate({"opacity":0},that.s.iOverlayFade,function(e){document.body.removeChild(that.dom.background);document.body.removeChild(that.dom.catcher);});}},"_fnAdjustOpenRows":function(){var aoOpen=this.s.dt.aoOpenRows;var iVisible=this.s.dt.oApi._fnVisbleColumns(this.s.dt);for(var i=0,iLen=aoOpen.length;i<iLen;i++){aoOpen[i].nTr.getElementsByTagName("td")[0].colSpan=iVisible;}}};ColVis.fnRebuild=function(oTable){var nTable=null;if(typeof oTable!="undefined"){nTable=oTable.fnSettings().nTable;}for(var i=0,iLen=ColVis.aInstances.length;i<iLen;i++){if(typeof oTable=="undefined"||nTable==ColVis.aInstances[i].s.dt.nTable){ColVis.aInstances[i].fnRebuild();}}};ColVis.aInstances=[];ColVis.prototype.CLASS="ColVis";ColVis.VERSION="1.0.7";ColVis.prototype.VERSION=ColVis.VERSION;if(typeof $.fn.dataTable=="function"&&typeof $.fn.dataTableExt.fnVersionCheck=="function"&&$.fn.dataTableExt.fnVersionCheck("1.7.0")){$.fn.dataTableExt.aoFeatures.push({"fnInit":function(oDTSettings){var init=(typeof oDTSettings.oInit.oColVis=="undefined")?{}:oDTSettings.oInit.oColVis;var oColvis=new ColVis(oDTSettings,init);return oColvis.dom.wrapper;},"cFeature":"C","sFeature":"ColVis"});}else{alert("Warning: ColVis requires DataTables 1.7 or greater - www.datatables.net/download");}})(jQuery);