calendardateinput_cn.js

基于javascript的自定义一个时间控件。

// Sets the current selected date
function SetPickedMonth(PickedYear, PickedMonth, PickedDay) {
   this.picked = new storedMonthObject(this.format, PickedYear, PickedMonth, PickedDay);
   this.setHidden(this.picked.formatted);
   this.setDisplayed(PickedYear, PickedMonth);
}

// The calendar object
function calendarObject(DateName, DateFormat, DefaultDate) {

   /* Properties */
   this.hiddenFieldName = DateName;
   this.monthListID = DateName + '_Month_ID';
   this.dayListID = DateName + '_Day_ID';
   this.yearFieldID = DateName + '_Year_ID';
   this.monthDisplayID = DateName + '_Current_ID';
   this.calendarID = DateName + '_ID';
   this.dayTableID = DateName + '_DayTable_ID';
   this.calendarLinkID = this.calendarID + '_Link';
   this.timerID = this.calendarID + '_Timer';
   this.objName = DateName + '_Object';
   this.format = DateFormat;
   this.formNumber = -1;
   this.picked = null;
   this.displayed = null;
   this.previous = null;
   this.next = null;

   /* Methods */
   this.setPicked = SetPickedMonth;
   this.setDisplayed = SetDisplayedMonth;
   this.checkYear = CheckYearInput;
   this.fixYear = FixYearInput;
   this.changeMonth = CheckMonthChange;
   this.changeDay = CheckDayChange;
   this.resetTimer = CalTimerReset;
   this.hideElements = SetElementStatus;
   this.show = ShowCalendar;
   this.handleTimer = DoTimer;
   this.iconHover = CalIconHover;
   this.buildCalendar = BuildCalendarDays;
   this.pickDay = PickDisplayDay;
   this.fixSelects = FixSelectLists;
   this.setHidden = new Function('D','if (this.formNumber >= 0) this.getHiddenField().value=D');
   // Returns a reference to these elements
   this.getHiddenField = new Function('return document.forms[this.formNumber].elements[this.hiddenFieldName]');
   this.getMonthList = new Function('return document.getElementById(this.monthListID)');
   this.getDayList = new Function('return document.getElementById(this.dayListID)');
   this.getYearField = new Function('return document.getElementById(this.yearFieldID)');
   this.getCalendar = new Function('return document.getElementById(this.calendarID)');
   this.getDayTable = new Function('return document.getElementById(this.dayTableID)');
   this.getCalendarLink = new Function('return document.getElementById(this.calendarLinkID)');
   this.getMonthDisplay = new Function('return document.getElementById(this.monthDisplayID)');
   this.isShowing = new Function('return !(this.getCalendar().style.visibility != \'visible\')');

   /* Constructor */
   // Functions used only by the constructor
   function getMonthIndex(MonthAbbr) { // Returns the index (0-11) of the supplied month abbreviation
      for (var MonPos=0;MonPos<MonthNames.length;MonPos++) {
         if (MonthNames[MonPos].substr(0,3).toUpperCase() == MonthAbbr.toUpperCase()) break;
      }
      return MonPos;
   }
   function SetGoodDate(CalObj, Notify) { // Notifies the user about their bad default date, and sets the current system date
      CalObj.setPicked(Today.getFullYear(), Today.getMonth(), Today.getDate());
      if (Notify) alert('WARNING: The supplied date is not in valid \'' + DateFormat + '\' format: ' + DefaultDate + '.\nTherefore, the current system date will be used instead: ' + CalObj.picked.formatted);
   }
   // Main part of the constructor
   if (DefaultDate != '') {
      if ((this.format == 'YYYYMMDD') && (/^(\d{4})(\d{2})(\d{2})$/.test(DefaultDate))) this.setPicked(RegExp.$1, parseInt(RegExp.$2,10)-1, RegExp.$3);
      else {
         // Get the year
         if ((this.format.substr(0,2) == 'YY') && (/^(\d{2,4})(-|\/)/.test(DefaultDate))) { // Year is at the beginning
            var YearPart = GetGoodYear(RegExp.$1);
            // Determine the order of the months and days
            if (/(-|\/)(\w{1,3})(-|\/)(\w{1,3})$/.test(DefaultDate)) {
               var MidPart = RegExp.$2;
               var EndPart = RegExp.$4;
               if (/D$/.test(this.format)) { // Ends with days
                  var DayPart = EndPart;
                  var MonthPart = MidPart;
               }
               else {
                  var DayPart = MidPart;
                  var MonthPart = EndPart;
               }
               MonthPart = (/\d{1,2}/i.test(MonthPart)) ? parseInt(MonthPart,10)-1 : getMonthIndex(MonthPart);
               this.setPicked(YearPart, MonthPart, DayPart);
            }
            else SetGoodDate(this, true);
         }
         else if (/(-|\/)(\d{2,4})$/.test(DefaultDate)) { // Year is at the end
            var YearPart = GetGoodYear(RegExp.$2);
            // Determine the order of the months and days
            if (/^(\w{1,3})(-|\/)(\w{1,3})(-|\/)/.test(DefaultDate)) {
               if (this.format.substr(0,1) == 'D') { // Starts with days
                  var DayPart = RegExp.$1;
                  var MonthPart = RegExp.$3;
               }
               else { // Starts with months
                  var MonthPart = RegExp.$1;
                  var DayPart = RegExp.$3;
               }
               MonthPart = (/\d{1,2}/i.test(MonthPart)) ? parseInt(MonthPart,10)-1 : getMonthIndex(MonthPart);
               this.setPicked(YearPart, MonthPart, DayPart);
            }
            else SetGoodDate(this, true);
         }
         else SetGoodDate(this, true);
      }
   }
}

// Main function that creates the form elements
function DateInput(DateName, Required, DateFormat, DefaultDate) {
   if (arguments.length == 0) document.writeln('<span style="color:red;font-size:' + FontSize + 'px;font-family:' + FontFamily + ';">ERROR: Missing required parameter in call to \'DateInput\': [name of hidden date field].</span>');
   else {
      // Handle DateFormat
      if (arguments.length < 3) { // The format wasn't passed in, so use default
         DateFormat = DefaultDateFormat;
         if (arguments.length < 2) Required = false;
      }
      else if (/^(Y{2,4}(-|\/)?)?((MON)|(MM?M?)|(DD?))(-|\/)?((MON)|(MM?M?)|(DD?))((-|\/)Y{2,4})?$/i.test(DateFormat)) DateFormat = DateFormat.toUpperCase();
      else { // Passed-in DateFormat was invalid, use default format instead
         var AlertMessage = 'WARNING: The supplied date format for the \'' + DateName + '\' field is not valid: ' + DateFormat + '\nTherefore, the default date format will be used instead: ' + DefaultDateFormat;
         DateFormat = DefaultDateFormat;
         if (arguments.length == 4) { // DefaultDate was passed in with an invalid date format
            var CurrentDate = new storedMonthObject(DateFormat, Today.getFullYear(), Today.getMonth(), Today.getDate());
            AlertMessage += '\n\nThe supplied date (' + DefaultDate + ') cannot be interpreted with the invalid format.\nTherefore, the current system date will be used instead: ' + CurrentDate.formatted;
            DefaultDate = CurrentDate.formatted;
         }
         alert(AlertMessage);
      }
      // Define the current date if it wasn't set already
      if (!CurrentDate) var CurrentDate = new storedMonthObject(DateFormat, Today.getFullYear(), Today.getMonth(), Today.getDate());
      // Handle DefaultDate
      if (arguments.length < 4) { // The date wasn't passed in
         DefaultDate = (Required) ? CurrentDate.formatted : ''; // If required, use today's date
      }
      // Creates the calendar object!
      eval(DateName + '_Object=new calendarObject(\'' + DateName + '\',\'' + DateFormat + '\',\'' + DefaultDate + '\')');
      // Determine initial viewable state of day, year, and calendar icon
      if ((Required) || (arguments.length == 4)) {
         var InitialStatus = '';
         var InitialDate = eval(DateName + '_Object.picked.formatted');
      }
      else {
         var InitialStatus = ' style="visibility:hidden"';
         var InitialDate = '';
         eval(DateName + '_Object.setPicked(' + Today.getFullYear() + ',' + Today.getMonth() + ',' + Today.getDate() + ')');
      }
      // Create the form elements
      with (document) {
         writeln('<input type="hidden" name="' + DateName + '" value="' + InitialDate + '">');
         // Find this form number
         for (var f=0;f<forms.length;f++) {
            for (var e=0;e<forms[f].elements.length;e++) {
               if (typeof forms[f].elements[e].type == 'string') {
                  if ((forms[f].elements[e].type == 'hidden') && (forms[f].elements[e].name == DateName)) {
                     eval(DateName + '_Object.formNumber='+f);
                     break;
                  }
               }
            }
         }
         writeln('<table cellpadding="0" cellspacing="2"><tr>' + String.fromCharCode(13) + '<td valign="middle">');
	  writeln('</select>' + String.fromCharCode(13) + '</td>' + String.fromCharCode(13) + '<td valign="middle">');
         writeln('<input' + InitialStatus + ' class="calendarDateInput" type="text" id="' + DateName + '_Year_ID" size="' + eval(DateName + '_Object.picked.yearPad.length') + '" maxlength="' + eval(DateName + '_Object.picked.yearPad.length') + '" title="Year" value="' + eval(DateName + '_Object.picked.yearPad') + '" onKeyPress="return YearDigitsOnly(window.event)" onKeyUp="' + DateName + '_Object.checkYear(this)" onBlur="' + DateName + '_Object.fixYear(this)">');
         writeln('<select class="calendarDateInput" id="' + DateName + '_Month_ID" onChange="' + DateName + '_Object.changeMonth(this)">');
         if (!Required) {
            var NoneSelected = (DefaultDate == '') ? ' selected' : '';
            writeln('<option value=""' + NoneSelected + '>' + UnselectedMonthText + '</option>');
         }
         for (var i=0;i<12;i++) {
            MonthSelected = ((DefaultDate != '') && (eval(DateName + '_Object.picked.monthIndex') == i)) ? ' selected' : '';
            writeln('<option value="' + i + '"' + MonthSelected + '>' + MonthNames[i].substr(0,3) + '</option>');
         }
	  
         writeln('</select>' + String.fromCharCode(13) + '</td>' + String.fromCharCode(13) + '<td valign="middle">');
         writeln('<select' + InitialStatus + ' class="calendarDateInput" id="' + DateName + '_Day_ID" onChange="' + DateName + '_Object.changeDay(this)">');
         for (var j=1;j<=eval(DateName + '_Object.picked.dayCount');j++) {
            DaySelected = ((DefaultDate != '') && (eval(DateName + '_Object.picked.day') == j)) ? ' selected' : '';
            writeln('<option' + DaySelected + '>' + j + '</option>');
         }
         
         write('<td valign="middle">' + String.fromCharCode(13) + '<a' + InitialStatus + ' id="' + DateName + '_ID_Link" href="javascript:' + DateName + '_Object.show()" onMouseOver="return ' + DateName + '_Object.iconHover(true)" onMouseOut="return ' + DateName + '_Object.iconHover(false)"><img src="' + ImageURL + '" align="baseline" title="Calendar" border="0"></a>&nbsp;');
         writeln('<span id="' + DateName + '_ID" style="position:absolute;visibility:hidden;width:' + (CellWidth * 7) + 'px;background-color:' + CalBGColor + ';border:1px solid dimgray;" onMouseOver="' + DateName + '_Object.handleTimer(true)" onMouseOut="' + DateName + '_Object.handleTimer(false)">');
         writeln('<table width="' + (CellWidth * 7) + '" cellspacing="0" cellpadding="1">' + String.fromCharCode(13) + '<tr style="background-color:' + TopRowBGColor + ';">');
         writeln('<td id="' + DateName + '_Previous_ID" style="cursor:default" align="center" class="calendarDateInput" style="height:' + CellHeight + '" onClick="' + DateName + '_Object.previous.go()" onMouseDown="VirtualButton(this,true)" onMouseUp="VirtualButton(this,false)" onMouseOver="return ' + DateName + '_Object.previous.hover(this,true)" onMouseOut="return ' + DateName + '_Object.previous.hover(this,false)" title="' + eval(DateName + '_Object.previous.monthName') + '"><img src="' + PrevURL + '"></td>');
         writeln('<td id="' + DateName + '_Current_ID" style="cursor:pointer" align="center" class="calendarDateInput" style="height:' + CellHeight + '" colspan="5" onClick="' + DateName + '_Object.displayed.goCurrent()" onMouseOver="self.status=\'Click to view ' + CurrentDate.fullName + '\';return true;" onMouseOut="self.status=\'\';return true;" title="Show Current Month">' + eval(DateName + '_Object.displayed.fullName') + '</td>');
         writeln('<td id="' + DateName + '_Next_ID" style="cursor:default" align="center" class="calendarDateInput" style="height:' + CellHeight + '" onClick="' + DateName + '_Object.next.go()" onMouseDown="VirtualButton(this,true)" onMouseUp="VirtualButton(this,false)" onMouseOver="return ' + DateName + '_Object.next.hover(this,true)" onMouseOut="return ' + DateName + '_Object.next.hover(this,false)" title="' + eval(DateName + '_Object.next.monthName') + '"><img src="' + NextURL + '"></td></tr>' + String.fromCharCode(13) + '<tr>');
         for (var w=0;w<7;w++) writeln('<td width="' + CellWidth + '" align="center" class="calendarDateInput" style="height:' + CellHeight + ';width:' + CellWidth + ';font-weight:bold;border-top:1px solid dimgray;border-bottom:1px solid dimgray;">' + WeekDays[w] + '</td>');
         writeln('</tr>' + String.fromCharCode(13) + '</table>' + String.fromCharCode(13) + '<span id="' + DateName + '_DayTable_ID">' + eval(DateName + '_Object.buildCalendar()') + '</span>' + String.fromCharCode(13) + '</span>' + String.fromCharCode(13) + '</td>' + String.fromCharCode(13) + '</tr>' + String.fromCharCode(13) + '</table>');
      }
   }
}