var isIntersys = 0;
var ismDiaVersion = 2;

var ismIsInline = false;
var ismInlineFrameName = '';
var ismDialogActive=0;
//var ismNeedCloseDialog=0;
var ismEventAttached = 0;
var ismDialogRetVal = undefined;
var ismUnloadDialogRetVal = undefined;
var ismDialogCallBack;
var ismDiaWin;
var ismDiaFrame;

//window.returnValue=newval.value; window.close();

function ismApplyClose( val, win ){
	win.returnValue=val; 
	if (win.parent.ismIsInline === false) {	win.close(); }
	else {
		//iFr=win.parent.document.getElementById(win.parent.ismInlineFrameName);
		iFr=win.parent.diaframe;
		ismUnblockWindow( win.parent, win.parent.ismDiaWin);
		win.parent.ismDialogCallBack( val ); 
		win.parent.document.getElementsByTagName('body')[0].removeChild( iFr);
	 };
};


function ismGetRandomInt(min, max){
  return Math.floor(Math.random() * (max - min + 1)) + min;
};

function ismAttachEvent(element, type, handler) {
	if (element.addEventListener) { 
		if (isIntersys===1) {console.log('addEventListener present');};
		element.addEventListener(type, handler, false); // other browsers
	}
	else {
		if (isIntersys===1) {console.log('will attachEvent');};
		if (isIntersys===1) {console.log(element.name);};
		dr=element.attachEvent('on'+type, handler); // only for IE
		if (isIntersys===1) {console.log('attachEvent');};
	};
};

function ismDetachEvent(element, type, handler) {
	if (element.removeEventListener) element.removeEventListener(type, handler, false); // other browsers
	else element.detachEvent('on'+type, handler); // only for IE
};

function ismClickOnBack( evt){
 if (ismDiaWin) ismDiaWin.focus();
 return false;
};

function ismGetShadowDiv( win, divid, createIfNone) {
	if (win.document.getElementById(divid)) {
		return win.document.getElementById(divid);
	}
	else
	{
		if (createIfNone==false) {
			return false;
		}
		else
		{
			var iDiv = win.document.createElement('div');
			iDiv.id = divid;
			win.document.getElementsByTagName('body')[0].appendChild(iDiv);
			var iCenter = win.document.createElement('center');		
			iDiv.appendChild(iCenter);
			if (typeof(iCenter.innerText) == "undefined") {iCenter.textContent = 'Please complete operations in popup!';}
			else {iCenter.innerText = 'Please complete operations in popup!';};
			iCenter.style.cssText= 'position:relative; top:50%; color: red;';

			var iCenter2 = win.document.createElement('center');		
			iDiv.appendChild(iCenter2);
			if (typeof(iCenter2.innerText) == "undefined") {iCenter2.textContent = 'Будь-ласка завершіть операції у вікні!';}
			else {iCenter2.innerText = 'Будь-ласка завершіть операції у вікні!';};
			iCenter2.style.cssText= 'position:relative; top:50%; color: red;';

			iDiv.onclick = ismClickOnBack;
			iDiv.style.cssText= 'display:none;z-index:1001;position:absolute;top: 0;left:0;width:100%;height:100%;background-color:silver;opacity:.70;filter:alpha(opacity=70);';
			return iDiv;
		};
	};
};

function ismBlockWindow( win, dw ){
	ismGetShadowDiv( win, 'ismModalDiv', true).style.display="block";
};

function ismUnblockWindow( win , dw){
	ismGetShadowDiv( win, 'ismModalDiv', false).style.display="none";
	ismDialogActive=0;
};


function ismCheckAttachedEvents(){
	if (ismDiaWin && ismDiaWin.closed == false) {
		if (ismDiaWin.document.readyState == 'complete' || ismDiaWin.document.readyState == 'loaded') {
			if ( ismEventAttached == 0 ) {
				ismAttachEvent( ismDiaWin, 'beforeunload', ismBeforeUnloadEvent);
				ismAttachEvent( ismDiaWin, 'unload', ismUnloadEvent);
				return false;
			};
		}
	}
	else { // dialog closed somehow to speedly but parent still shaded and timer blurred... will need callback and return value???
		if (ismDialogActive == 1) { ismUnblockWindow(window, ismDiaWin); }
		if (ismDiaVersion === 2 && ismDiaWin && ismDiaWin.closed == true) {
			ismDiaWin = null;
			ismDialogRetVal =  ismUnloadDialogRetVal; //this.returnValue; // ie8 problem with "this"
			ismDialogCallBack( ismDialogRetVal ); 
		};
		return false;
	}
	setTimeout(ismCheckAttachedEvents, 500);
};

function ismUnloadEvent(evt){
	if ( typeof(evt) != 'undefined') {
		var target = evt.target ? evt.target : evt.srcElement;
		if (target !== null) {
			var aurl = target.location.href ? target.location.href : '';
		};
	};
	ismUnloadDialogRetVal = ismDiaWin.returnValue;
	if (ismEventAttached ==1 && typeof(evt) != 'undefined') {
		ismEventAttached = 0;
		setTimeout(ismCheckAttachedEvents, 500);
	};	
};

function ismBeforeUnloadEvent(evt){
	if ( typeof(evt) != 'undefined') {
		var target = evt.target ? evt.target : evt.srcElement;
		if (target !== null) {
			var aelem = target.document ? target.document.activeElement : target.activeElement;
			//var aelem = target.activeElement ? target.activeElement : target;
			var aeltype = aelem.type ? aelem.type : 'none';
		};
	};
	ismEventAttached =1;
	if ( ismDiaVersion === 1 && typeof(evt) != 'undefined' && aeltype != 'submit')
	{
		ismDialogRetVal =  ismDiaWin.returnValue; //this.returnValue; // ie8 problem with "this"
		ismDialogCallBack( ismDiaWin.returnValue ); 
		ismUnblockWindow(window, ismDiaWin); 
	};
};

function ismCheckAttachedEvents2(){

	if (isIntersys===1) { console.log('ismCheckAttachedEvents2 fired'); };

	if (ismDiaWin && ismDiaWin.closed == true) {
		if (ismDialogActive == 1) { 
			if (isIntersys===1) { console.log('ismCheckAttachedEvents2: win.closed and will unblock'); };
			ismUnblockWindow(window, ismDiaWin); 
		};

		try {
		     ismUnloadDialogRetVal = ismDiaWin.returnValue;
			if (isIntersys===1) { console.log('ismCheckAttachedEvents2: get diawin.returnValue '); };
		}
		catch(err) {
				if (isIntersys===1) { console.log('ismCheckAttachedEvents2: catched error on diawin.returnValue in try'); };
		};

		ismDiaWin = null;
		ismDialogRetVal =  ismUnloadDialogRetVal; //this.returnValue; // ie8 problem with "this"
		ismDialogCallBack( ismDialogRetVal ); 
		return false;
	};	
	if (ismDiaWin && ismDiaWin.closed == false) {
		if (ismDiaWin.document.readyState == 'complete' || ismDiaWin.document.readyState == 'loaded') {
			if (isIntersys===1) { console.log('ismCheckAttachedEvents2: reattached beforeunload'); };
			ismAttachEvent( ismDiaWin, 'beforeunload', ismBeforeUnloadEvent2);
			return false;
		}
	}

	setTimeout(ismCheckAttachedEvents2, 500);
};

function ismBeforeUnloadEvent2(evt){
	ismUnloadDialogRetVal = ismDiaWin.returnValue;
	if ( typeof(evt) != 'undefined') {
		if (isIntersys===1) {console.log('beforeUnload: timeout set');};
		setTimeout(ismCheckAttachedEvents2, 500);
	};	

};

function ismShowAsyncDialogInline(url, cb){
	ismDialogActive=1;
	ismEventAttached = 0;
	ismUnloadDialogRetVal = undefined;
	ismDialogRetVal = undefined;
	ismDialogCallBack = cb;
	ismIsInline = true;

	ismBlockWindow(window, null);
	var iFr = window.document.createElement('iframe');
	diaframe = iFr;
	ismInlineFrameName = 'interModalDialogInline'+ismGetRandomInt(1,99999999);
	iFr.id = ismInlineFrameName;
	window.document.getElementsByTagName('body')[0].appendChild(iFr);
	iFr.style.cssText= 'z-index:2001;position:absolute;top: 10%;left:10%;width:80%;height:80%;background-color: #FFFFFF;';
	iFr.src=url;
	ismDiaWin = iFr.contentWindow;
};

function ismIEVersion(){
	var uA = navigator.userAgent;
	var browser = null;
	var ieVersion = null;

	if (uA.indexOf('MSIE 6') >= 0) {
	    browser = 'IE';
	    ieVersion = 6;
	};
	if (uA.indexOf('MSIE 7') >= 0) {
	    browser = 'IE';
	    ieVersion = 7;
	};
	if (document.documentMode) { // as of IE8
	    browser = 'IE';
	    ieVersion = document.documentMode;
	};
	if (browser === 'IE') { return ieVersion;} 
	else { return 0; };
};

function ismShowAsyncDialog(url, cb, winOptions){

	ismDialogActive=1;
	ismEventAttached = 0;
	ismUnloadDialogRetVal = undefined;
	ismDialogRetVal = undefined;
	ismDialogCallBack = cb;
	ismIsInline = false;

	if (window.document && window.document.body && window.document.body.offsetWidth) {  // IE8
	 	w = window.document.body.scrollWidth; //-40;
 		h = window.document.body.offsetHeight; //-40;
	};
	if (window.document && window.document.compatMode=='CSS1Compat' && window.document.documentElement && window.document.documentElement.offsetWidth ) {
		w = window.document.documentElement.offsetWidth;//-40;
		h = window.document.documentElement.offsetHeight;//-40;
	};
	if (window.outerWidth && window.outerHeight) {
		//w = window.innerWidth;//-40;
		//h = window.innerHeight;//-40;
		w = window.outerWidth;//-40;
		h = window.outerHeight;//-40;
	};

	iw=w; 
	ih=h;

	if (window.innerWidth && window.innerHeight) {
		iw = window.innerWidth;//-40;
		ih = window.innerHeight;//-40;
	};

	if ( typeof(window.screenLeft) == 'undefined' ) {
		x = window.screenX;// + 20;		
		y = window.screenY;// + 20;
	}
	else
	{
		x = window.screenLeft;// + 20;
		y = window.screenTop;// + 20;
	};

	x = x + Math.floor(w/10);
	if (ismIEVersion()>8) { y = y + Math.floor(ih/10) -Math.floor((h-ih)/2); }
	else { y = y + Math.floor(ih/10) + Math.floor((h-ih)/2); };
	
	if (ismIEVersion()>0 && ismIEVersion()<=8) { y = y - 16*4};

	w = w - 2*Math.floor(w/10);
	if (ismIEVersion()>8) { h = ih - 2*Math.floor(h/10) - Math.floor((h-ih)/2); }
	else {	h = ih - 2*Math.floor(ih/10); }; 
	w=450;
	h=170;
	if (typeof winOptions === 'undefined') { winOptions = 'status=1, resizable=1, scrollbars=1, location=0, menubar=0, toolbar=0, width = '+w+', height = '+h+', top='+ y+ ', left='+x; }

	ismDiaWin = window.open( url, "interModalDialog"+ismGetRandomInt(1,99999999), winOptions );
	if (isIntersys===1) {console.log('ShowModal: will block window');};
	ismBlockWindow( window, ismDiaWin);
	if (isIntersys===1) {console.log('ShowModal: blocked window');};
	if (isIntersys===1) {console.log('ShowModal: version='+ ismDiaVersion);};
	if (ismDiaVersion === 3) {
		if (isIntersys===1) {console.log('ShowModal: will attach beforeunload');};
		ismAttachEvent( ismDiaWin, 'beforeunload', ismBeforeUnloadEvent2);	
		if (isIntersys===1) {console.log('ShowModal: attached beforeunload');};
	}
	else {
		ismAttachEvent( ismDiaWin, 'beforeunload', ismBeforeUnloadEvent);	
		ismAttachEvent( ismDiaWin, 'unload', ismUnloadEvent);	
	};
};