/*  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).
 */

// $Id: calendar-setup.js,v 1.25 2005/03/07 09:51:33 mishoo Exp $

/**
 *  This function "patches" an input field (or other element) to use a calendar
 *  widget for date selection.
 *
 *  The "params" is a single object that can have the following properties:
 *
 *    prop. name   | description
 *  -------------------------------------------------------------------------------------------------
 *   inputField    | the ID of an input field to store the date
 *   displayArea   | the ID of a DIV or other element to show the date
 *   button        | ID of a button or other element that will trigger the calendar
 *   eventName     | event that will trigger the calendar, without the "on" prefix (default: "click")
 *   ifFormat      | date format that will be stored in the input field
 *   daFormat      | the date format that will be used to display the date in displayArea
 *   singleClick   | (true/false) wether the calendar is in single click mode or not (default: true)
 *   firstDay      | numeric: 0 to 6.  "0" means display Sunday first, "1" means display Monday first, etc.
 *   align         | alignment (default: "Br"); if you don't know what's this see the calendar documentation
 *   range         | array with 2 elements.  Default: [1900, 2999] -- the range of years available
 *   weekNumbers   | (true/false) if it's true (default) the calendar will display week numbers
 *   flat          | null or element ID; if not null the calendar will be a flat calendar having the parent with the given ID
 *   flatCallback  | function that receives a JS Date object and returns an URL to point the browser to (for flat calendar)
 *   disableFunc   | function that receives a JS Date object and should return true if that date has to be disabled in the calendar
 *   onSelect      | function that gets called when a date is selected.  You don't _have_ to supply this (the default is generally okay)
 *   onClose       | function that gets called when the calendar is closed.  [default]
 *   onUpdate      | function that gets called after the date is updated in the input field.  Receives a reference to the calendar.
 *   date          | the date that the calendar will be initially displayed to
 *   showsTime     | default: false; if true the calendar will include a time selector
 *   timeFormat    | the time format; can be "12" or "24", default is "12"
 *   electric      | if true (default) then given fields/date areas are updated for each move; otherwise they're updated only on close
 *   step          | configures the step of the years in drop-down boxes; default: 2
 *   position      | configures the calendar absolute position; default: null
 *   cache         | if "true" (but default: "false") it will reuse the same calendar object, where possible
 *   showOthers    | if "true" (but default: "false") it will show days from other months too
 *
 *  None of them is required, they all have default values.  However, if you
 *  pass none of "inputField", "displayArea" or "button" you'll get a warning
 *  saying "nothing to setup".
 */
	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);
		// takes precedence if both are defined
		param_default("dateStatusFunc", params["disableFunc"]);	
		param_default("dateText", null);
		param_default("firstDay", null);
		param_default("align", "Br");
		param_default("range", [1960, 2000]);
		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);
//20080325 Tin Trang: add class name hack for multi calendar styles used in one page
		param_default("calendarStyle", 'calendar');

		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;
	};

	function calendarDateChanged(calendar) {
    // Beware that this function is called even if the end-user only
    // changed the month/year.  In order to determine if a date was
    // clicked you can use the dateClicked property of the calendar:
    if (calendar.dateClicked) {
      // OK, a date was clicked, redirect to /yyyy/mm/dd/index.php
      var y = calendar.date.getFullYear();
      var m = calendar.date.getMonth()+1;     // integer, 0..11
      if (m<10) m = '0'+m;
	  var d = calendar.date.getDate();      // integer, 1..31
	  if (d<10) d = '0'+d;
      // redirect...
	  window.location = "/candidate/seeker_searchwork.php?btnsearch=T%C3%ACm+ki%E1%BA%BFm&txt_startdate=" + d + "/"+m+"/"+y+ "&txt_enddate="+ d + "/"+m+"/"+y;
    }
  };