/*  Copyright Mihai Bazon, 2002, 2003  |  http://dynarch.com/mishoo/
 * ---------------------------------------------------------------------------
 *
 * The DHTML Calendar
 *
 * Details and latest version at:
 * http://dynarch.com/mishoo/calendar.epl
 *
 * This script is distributed under the GNU Lesser General Public License.
 * Read the entire license text here: http://www.gnu.org/licenses/lgpl.html
 *
 * This file defines helper functions for setting up the calendar.  They are
 * intended to help non-programmers get a working calendar on their site
 * quickly.  This script should not be seen as part of the calendar.  It just
 * shows you what one can do with the calendar, while in the same time
 * providing a quick and simple method for setting it up.  If you need
 * exhaustive customization of the calendar creation process feel free to
 * modify this code to suit your needs (this is recommended and much better
 * than modifying calendar.js itself).
 */
 Calendar.setup=function(params){
     function param_default(pname,def){
         if(typeof params[pname]=="undefined")
         {
             params[pname]=def;
         }
     };
     param_default("inputField",null);
     param_default("displayArea",null);
     param_default("button",null);
     param_default("eventName","click");
     param_default("ifFormat","%Y/%m/%d");
     param_default("daFormat","%Y/%m/%d");
     param_default("singleClick",true);
     param_default("disableFunc",null);
     param_default("dateStatusFunc",params["disableFunc"]);
     param_default("dateText",null);
     param_default("firstDay",null);
     param_default("align","Br");
     param_default("range",[1900,2999]);
     param_default("weekNumbers",true);
     param_default("flat",null);
     param_default("flatCallback",null);
     param_default("onSelect",null);
     param_default("onClose",null);
     param_default("onUpdate",null);
     param_default("date",null);
     param_default("showsTime",false);
     param_default("timeFormat","24");
     param_default("electric",true);
     param_default("step",2);
     param_default("position",null);
     param_default("cache",false);
     param_default("showOthers",false);
     param_default("multiple",null);
     var tmp=["inputField","displayArea","button"];
     for(var i in tmp)
     {
         if(typeof params[tmp[i]]=="string")
         {
             params[tmp[i]]=document.getElementById(params[tmp[i]]);
         }
     }
     if(!(params.flat||params.multiple||params.inputField||params.displayArea||params.button))
     {
         alert("Calendar.setup:\n  Nothing to setup (no fields found).  Please check your code");
         return false;
     }
     function onSelect(cal){
         var p=cal.params;
         var update=(cal.dateClicked||p.electric);
         if(update&&p.inputField)
         {
             p.inputField.value=cal.date.print(p.ifFormat);
             if(typeof p.inputField.onchange=="function")
                 p.inputField.onchange();
         }
         if(update&&p.displayArea)
             p.displayArea.innerHTML=cal.date.print(p.daFormat);
         if(update&&typeof p.onUpdate=="function")
             p.onUpdate(cal);
         if(update&&p.flat)
         {
             if(typeof p.flatCallback=="function")
                 p.flatCallback(cal);
         }
        // if(update&&p.singleClick&&cal.dateClicked)
             //cal.callCloseHandler();
     };
     if(params.flat!=null)
     {
         if(typeof params.flat=="string")
             params.flat=document.getElementById(params.flat);
         if(!params.flat)
         {
             alert("Calendar.setup:\n  Flat specified but can't find parent.");
             return false;
         }
         var cal=new Calendar(params.firstDay,params.date,params.onSelect||onSelect);
         cal.showsOtherMonths=params.showOthers;
         cal.showsTime=params.showsTime;
         cal.time24=(params.timeFormat=="24");
         cal.params=params;
         cal.weekNumbers=params.weekNumbers;
         cal.setRange(params.range[0],params.range[1]);
         cal.setDateStatusHandler(params.dateStatusFunc);
         cal.getDateText=params.dateText;
         if(params.ifFormat)
         {
             cal.setDateFormat(params.ifFormat);
         }
         if(params.inputField&&typeof params.inputField.value=="string")
         {
             cal.parseDate(params.inputField.value);
         }
         cal.create(params.flat);
         cal.show();
         return false;
     }
     var triggerEl=params.button||params.displayArea||params.inputField;
     triggerEl["on"+params.eventName]=function(){
         var dateEl=params.inputField||params.displayArea;
         var dateFmt=params.inputField?params.ifFormat:params.daFormat;
         var mustCreate=false;
         var cal=window.calendar;
         if(dateEl)params.date=Date.parseDate(dateEl.value||dateEl.innerHTML,dateFmt);
         if(!(cal&&params.cache))
         {
             window.calendar=cal=new Calendar(params.firstDay,params.date,params.onSelect||onSelect,params.onClose||function(cal){cal.hide();});
             cal.showsTime=params.showsTime;
             cal.time24=(params.timeFormat=="24");
             cal.weekNumbers=params.weekNumbers;
             mustCreate=true;
         }
         else
         {
             if(params.date)
                 cal.setDate(params.date);
             cal.hide();
         }
         if(params.multiple)
         {
             cal.multiple={};
             for(var i=params.multiple.length;--i>=0;)
             {
                 var d=params.multiple[i];
                 var ds=d.print("%Y%m%d");
                 cal.multiple[ds]=d;
             }
         }
         cal.showsOtherMonths=params.showOthers;
         cal.yearStep=params.step;
         cal.setRange(params.range[0],params.range[1]);
         cal.params=params;
         cal.setDateStatusHandler(params.dateStatusFunc);
         cal.getDateText=params.dateText;
         cal.setDateFormat(dateFmt);
         if(mustCreate)
             cal.create();
         cal.refresh();
         if(!params.position)
             cal.showAtElement(params.button||params.displayArea||params.inputField,params.align);
         else cal.showAt(params.position[0],params.position[1]);
         return false;
     };
     return cal;
 };