var hourglass = 'pg_box2';
var blackpane = 'pg_blackbox';
var play_debug = false;
var open_calls = 0;
var debug_count = 0;

var nav_cont_id = 'navigation';
var nav_box_id_pref = 'nav_block_';

/*******************************************************************************
 * FUNCTIONS AND HANDLERS
 ******************************************************************************/
function refreshMenu(menu) {
	if (menu == undefined) {
		menu = '';
	}

	ajaxCall('core', 'refreshmenu', 'menu='+menu);
}

function handleForceRefreshMenu(data) {
  if (data.boxid) {
    refreshMenu(data.boxid);
  }
}

function handleRefreshMenu(data) {
	var nav_cont = document.getElementById(nav_cont_id);

	if (data.boxid) {

		var boxid = data.boxid;
		var box = data.boxes[0];

		// First get the old one!!! Because of ID Collision
		var el_old = document.getElementById(nav_box_id_pref+boxid)

		var temp = document.createElement("div");
		temp.innerHTML = box;
		var el_new = temp.firstChild;

		nav_cont.replaceChild(el_new, el_old);


	}
	else {
		while(nav_cont.childNodes.length > 0) {
			nav_cont.removeChild(nav_cont.childNodes[0]);
		}

		var html = '';
		for (i=0; i<data.boxes.length; i++) {
			html += data.boxes[i];
		}

		// Not nice but effective
		nav_cont.innerHTML = html;
	}

	dojo.hostenv.makeWidgets();
}

function handleLoginFailed(data) {
	document.forms['login'].pass.value = '';
	document.forms['login'].pass.focus();
}

function handleInitRefreshMenu() {
	refreshMenu();
}

function handleMessages(messages) {

	// Remove all childs
	var mdiv = document.getElementById('messages');
	while (mdiv.childNodes.length > 0) {
		mdiv.removeChild(mdiv.childNodes[0]);
	}

	mdiv.style.opacity = 0;

	if (messages.length > 0) {
		var type = '';
		var div;
		// Check if displayed...
		for(i=0; i<messages.length; i++) {
			if (messages[i].type != type) {
				type = messages[i].type;
				div = document.createElement('div');
				div.setAttribute('id', 'messages_'+type.toLowerCase());
				mdiv.appendChild(div);
			}

			var text = document.createTextNode(messages[i].msg);
			var tdiv = document.createElement('div');

			tdiv.appendChild(text);

			div.appendChild(tdiv);
		}

		dojo.lfx.html.fadeIn('messages', 1000).play(100);
	}
}

/*******************************************************************************
 * DEFAULT HANDLER
 ******************************************************************************/
/*
 * Sends Data to the Workarea
 */
function handleRefreshGui(data) {
	document.getElementById('workarea').innerHTML = data.html;
}

/*
 * Does nothing
 */
function handleVoid(data) {
	return;
}

/*******************************************************************************
 * AJAX CORE FUNCTIONS
 ******************************************************************************/
function ajaxCall(module, event, parameter) {

	if (parameter != null && parameter != undefined) {
		parameter = 'module='+module+'&event='+event+'&'+parameter;
	}
	else {
		parameter = 'module='+module+'&event='+event;
	}

  if (play_debug) {
    writeDebug(parameter, 1);
  }

	showHourglass();

	dojo.io.bind({
		url: "http://play.uhcwr.ch/index.php?"+parameter,
		load: function(type, data, evt) { ajaxHandleResponse(type, data, evt); },
		error: function(type, error) { ajaxHandleError(type, error); }
	});
}

function ajaxFormSubmit(module, event, formNode, parameter) {

	if (parameter != null) {
		parameter = 'module='+module+'&event='+event+'&'+parameter;
	}
	else {
		parameter = 'module='+module+'&event='+event;

	}

  if (play_debug) {
    var text = parameter;
    if (formNode != null) {
      text += '; Form: '+formNode;
      writeDebug(text, 1);
    }
  }

	showHourglass();

	dojo.io.bind({
		url: "http://play.uhcwr.ch/index.php?"+parameter,
		formNode: formNode,
		load: function(type, data, evt) { ajaxHandleResponse(type, data, evt); },
		error: function(type, error) { ajaxHandleError(type, error); }
	});
}

function ajaxHandleResponse(type, data, evt) {

  writeDebug(data, 2);

	//var data_obj = eval('('+data+')');
	var data_obj = data.parseJSON();

	var handler = data_obj.handler;
	var handler_data = data_obj.data;

	if (typeof handler == 'object') {
		for(i=0; i<handler.length; i++) {
			eval(handler[i]+"(handler_data)");
		}
	}
	else {
		eval(handler+"(handler_data)");
	}

	// Handler Message later, because of GUI Refresh...
	if (data_obj.messages) {
		handleMessages(data_obj.messages);
	}

	hideHourglass();
}
function ajaxHandleError(type, error) {
  if (play_debug) {
    writeDebug(error.message, 3);
  }
  else {
    alert("ERROR: "+error.message);
  }
	hideHourglass();
}

function writeDebug(data, cr) {
	if (play_debug) {
    if (parent.frames['debug'].document.getElementById('debug')) {
      var doc_debug = parent.frames['debug'].document;

      var now = (new Date()).toGMTString();

  		var tdiv = doc_debug.createElement('div');

      data = data.replace(/&/gm,"&amp;").replace(/</gm,"&lt;").replace(/>/gm,"&gt;").replace(/"/gm,"&quot;");

      // Increment Counter
      debug_count++;

      var html = '<div class="func"><a href="javascript: debugShowHide('+debug_count+');">Ein-/Ausblenden</a></div>'+
        '<div class="titel">'+(cr == 1 ? '<span class="request">Request</span>' : (cr == 2 ? '<span class="response">Response</span>' : '<span class="error">Error</span>') )+' - <span class="time">'+now+'</span></div>'+
        '<div class="text'+(cr == '3' ? ' text_error' : '')+'" id="debug_text'+debug_count+'" style="display: '+((cr == 1 || cr == 3) ? 'inline' : 'none')+'">'+data+'</div>';



      tdiv.innerHTML = html;

      var debug = doc_debug.getElementById('debug');

      if (debug.childNodes.length > 0) {
        debug.insertBefore(tdiv, debug.firstChild);
      }
      else {
        debug.appendChild(tdiv);
      }
    }
	}
}

var showbp;
var fading;
var opacity;

function showHourglass() {
	dojo.byId(hourglass).style.visibility = 'visible';
  dojo.byId(blackpane).style.visibility = 'visible';

  showbp = true;
  fading = false;
  opacity = 0.0;
  window.setTimeout('fadeBlackpane()', 4000);

	open_calls++;
}

function fadeBlackpane() {

  fading = true;

  if ((showbp == true && opacity > 0.2) || (showbp == false && opacity < 0)) {
    fading = false;
    return;
  }

  if (showbp == true) {
    opacity += 0.01;
  }
  else {
    if (opacity == 0.0) {
      dojo.byId(blackpane).style.visibility = 'hidden';
      fading = false;
      return;
    }
    opacity -= 0.02;
    if (opacity < 0.0) {
      opacity = 0.0;
    }
  }

  dojo.byId(blackpane).style.opacity = opacity;
  dojo.byId(blackpane).style.filter = 'alpha(opacity='+(opacity*100)+')';

  window.setTimeout('fadeBlackpane()', 50);
}

function hideHourglass() {
	open_calls--;

	if (open_calls == 0) {
		dojo.byId(hourglass).style.visibility = 'hidden';

	    showbp = false;
	    // Wenn nicht mehr aktiv, dann initialisieren
	    if (fading == false) {
	      fadeBlackpane();
	    }
	}
}
function selectBoxTransferSelected(boxSourceId, boxTargetId) {
	var boxSource = dojo.byId(boxSourceId);
	var boxTarget = dojo.byId(boxTargetId);
	
	// Bei letztem beginnen, damit Index nicht verschossen wird
	// beim entfernen!
	var changed = false;
	for (var i=boxSource.options.length-1; i>=0; i--) {
		if (boxSource.options[i].selected == true) {
			var newopt = new Option(boxSource.options[i].text, boxSource.options[i].value);
			// Hinzufügen
			boxTarget.options[boxTarget.options.length] = newopt;
			boxSource.options[i] = null;
			
			changed = true;
		}
	}
	
	if (changed) {
		var arrTmp = new Array(boxTarget.options.length);
		for (var i=0; i<boxTarget.options.length; i++) {
			arrTmp[i] = new Option(boxTarget.options[i].text, boxTarget.options[i].value);
		}
		arrTmp.sort(compareOptionText);
		
		for (var i=0; i<boxTarget.options.length; i++) {
			boxTarget.options[i] = new Option(arrTmp[i].text, arrTmp[i].value);
		}
	}
}

function selectBoxSelectAll(boxId) {
	var box = dojo.byId(boxId);
	for (var i=0; i<box.options.length; i++)
		box.options[i].selected = true;
}

function compareOptionText(a, b) {
	return a.text!=b.text ? a.text<b.text ? -1 : 1 : 0;
}

/*
function core_generateNames() {
	var f = document.forms['user'];
	
	var vn = f.vorname.value;
	var nn = f.nachname.value;
	
	if (vn != "" && nn != "") {
		var id = vn.substr(0, 1) + nn;
	}
}*/