/*------------------------------------------------------------------------

	- HTML Table Filter Generator 

	- Loader feature v1.1

	- By Max Guglielmi (tablefilter.free.fr)

	- Licensed under the MIT License

-------------------------------------------------------------------------*/



TF.prototype.SetLoader = function()

/*====================================================

	- generates loader div

=====================================================*/

{

	if( this.loaderDiv!=null ) return;

	var f = this.fObj;

	this.loaderTgtId =			f!=undefined && f.loader_target_id!=undefined //id of container element

									? f.loader_target_id : null;

	this.loaderDiv =			null; //div containing loader

	this.loaderText =			f!=undefined && f.loader_text!=undefined ? f.loader_text : 'Loading...'; //defines loader text

	this.loaderHtml =			f!=undefined && f.loader_html!=undefined ? f.loader_html : null; //defines loader innerHtml

	this.loaderCssClass = 		f!=undefined && f.loader_css_class!=undefined //defines css class for loader div

									? f.loader_css_class : 'loader';

	this.loaderCloseDelay =		200; //delay for hiding loader

	this.onShowLoader =			f!=undefined && tf_IsFn(f.on_show_loader) //calls function before loader is displayed

									? f.on_show_loader : null;

	this.onHideLoader =			f!=undefined && tf_IsFn(f.on_hide_loader) //calls function after loader is closed

									? f.on_hide_loader : null;

	var containerDiv = tf_CreateElm( 'div',['id',this.prfxLoader+this.id] );

	containerDiv.className = this.loaderCssClass;// for ie<=6

	//containerDiv.style.display = 'none';

	var targetEl = (this.loaderTgtId==null) 

		? (this.gridLayout ? this.tblCont : this.tbl.parentNode) : tf_Id( this.loaderTgtId );

	if(this.loaderTgtId==null) targetEl.insertBefore(containerDiv, this.tbl);

	else targetEl.appendChild( containerDiv );

	this.loaderDiv = tf_Id(this.prfxLoader+this.id);

	if(this.loaderHtml==null) 

		this.loaderDiv.appendChild( tf_CreateText(this.loaderText) );

	else this.loaderDiv.innerHTML = this.loaderHtml;

}



TF.prototype.RemoveLoader = function()

/*====================================================

	- removes loader div

=====================================================*/

{

	if( this.loaderDiv==null ) return;

	var targetEl = (this.loaderTgtId==null) 

		? (this.gridLayout ? this.tblCont : this.tbl.parentNode) : tf_Id( this.loaderTgtId );

	targetEl.removeChild(this.loaderDiv);

	this.loaderDiv = null;

}



TF.prototype.ShowLoader = function(p)

/*====================================================

	- displays/hides loader div

=====================================================*/

{

	if(!this.loader || !this.loaderDiv) return;

	if(this.loaderDiv.style.display==p) return;

	var o = this;



	function displayLoader(){ 

		if(!o.loaderDiv) return;

		if(o.onShowLoader && p!='none') 

			o.onShowLoader.call(null,o);

		o.loaderDiv.style.display = p;

		if(o.onHideLoader && p=='none') 

			o.onHideLoader.call(null,o);

	}



	var t = (p=='none') ? this.loaderCloseDelay : 1;

	window.setTimeout(displayLoader,t);

}