ig_calendar.js

研究怎样通过手写代码来完成自动生成代码

			}
			this.doPost(0);
		}
		//
		if((o = this.elems[2]) != null) o.selectedIndex = month - 1;
		if((o = this.elems[3]) != null) if(this.year0 == null) if((d = o.options) != null)
			if((d = d[0]) != null) try{this.year0 = parseInt(this.getText(d));}catch(ex){}
		if(this.year0 != null)
		{
			i = o.options.length;
			var y = year - (i >> 1);
			d = this.df(this.MinDate, 0);
			if(y < d) y = d;
			else if(y + i > (d = this.df(this.MaxDate, 0))) y = d - i + 1;
			if(this.year0 != y)
			{
				while(i-- > 0)
				{
					d = (y + i > 999) ? "" : ((y + i > 99) ? "0" : "00");
					this.setText(o.options[i], d + (y + i));
				}
				o.selectedIndex = -1;
			}
			o.selectedIndex = year - (this.year0 = y);
		}
		//
		if((o = this.Days[15]) != null)
		{
			if(o.year == year && o.month == month){if(check) return;}
			else check = true;
		}
		else check = false;
		//
		var numDays = (month == 2) ? 28 : 30;
		d = this.nd(year, month, numDays + 1);
		if(this.df(d, 1) == month) numDays++;
		d = this.nd(year, month, 1);
		i = this.df(d, 3) - this.dow;
		var day1 = (i < 0) ? i + 7 : i;
		// after init
		if(this.elemID > -10)
		{
			if(this.nextFormat > 0)
			{
				o = this.info.AbbreviatedMonthNames;
				this.setText(this.elems[1], o[(month + 12) % 12]);
				this.setText(this.elems[0], o[(month + 10) % 12]);
			}
			if(this.elems[5] != null && (id || this.Days[15].month != month || this.Days[15].year != year))
			{
				d = (year < 1000) ? ((year < 100) ? "00" : "0") : "";
				o = this.titleFormat.replace("#", d + year).replace("%%", this.info.MonthNames[month - 1]).replace("%", "" + month);
				this.setText(this.elems[5], o);
			}
		}
		id = this.Events.renderDay;
		d = this.nd(year, month, 0);
		var day0 = this.df(d, 2) - day1 + 1;
		this.selDate[3] = -1;
		var sun = (7 - this.dow) % 7;
		for(i = 0; i < 42; i++)
		{
			// init
			if(this.elemID == -10)
			{
				var elem = null;
				if((elem = ig_csom.getElementById(this.ID + "_d" + i)) == null) continue;
				elem.setAttribute("calID", this.ID + "," + i);
				this.addLsnr(elem, false);
				o = this.Days[i] = new Object();
				o.element = elem;
				o.calendar = this;
				o.index = i;
			}
			else o = this.Days[i];
			o.year = year;
			o.month = month;
			if(i < day1)
			{
				o.day = day0 + i;
				if(--o.month < 1){o.month = 12; o.year--;}
				o.css = this.getCss((i % 7 == sun || i % 7 == (sun + 6) % 7) ? 3 : 2);
			}
			else if(i < day1 + numDays)
			{
				o.day = i - day1 + 1;
				o.css = this.getCss((i % 7 == sun || i % 7 == (sun + 6) % 7) ? 4 : 0);
			}
			else
			{
				o.day = i + 1 - (day1 + numDays);
				if(++o.month > 12){o.month = 1; o.year++;}
				o.css = this.getCss((i % 7 == sun || i % 7 == (sun + 6) % 7) ? 3 : 2);
			}
			if(o.day == this.today[2] && o.month == this.today[1] && o.year == this.today[0])
				o.css = this.getCss(5);
			var text = o.day, sel = this.isSelected(o.year, o.month, o.day, i);
			d = this.ID + (sel ? this.getCss(1) : o.css);
			if(id.length > 0)
			{
				if(this.fireEvt(o, id, d, false, sel)) continue;
				o = this.buf;
				d = this.buf.css;
				text = this.buf.text;
			}
			// init
			else if(this.elemID == -10) continue;
			o.element.className = d;
			this.setText(o.element, text);
			/* try using calendar repainting to clear any lingering tabIndex*/
			if (this.tabIndex>-1) o.element.tabIndex = sel ? this.tabIndex : -1;
		}
		if(this.elemID != -10) this.update();
		if(!check || e == null) return;
		this.post = this.postVis;
		if(!ig_csom.isEmpty(o = this.Events.monthChanged))
			this.fireEvt(this.nd(year, month, 1), o, e, true);
		this.doPost(2);
		
	}
	this.repaint(year, month);
	this.keydownHandler=function(e)
	{
		/* sanity checks*/	
		if (!e) return;	
		var o = e.srcElement;	
		if(o == null) if((o = e.target) == null) o = this;
		/*determine if it comes from one of the buttons*/
		o = igcal_getCalendarById(null, o);		
		if (32==e.keyCode && (this.elemID==500||this.elemID==502||this.elemID==504||this.elemID==506||this.elemID==508)) 
			if(o != null) o.click(e);	
	}
	
	this.click = function(e)
	{		
		if(this.element.disabled) return;
		var o = this.Days[15];
		var y = o.year, m = o.month;
		var id = this.elemID;
		// drop
		if(id == 504 || id == 506)
		{
			if(id == 504) m = this.elems[2].selectedIndex + 1;
			else
			{
				if((y = this.year0) == null) return;
				y += this.elems[3].selectedIndex;
			}
			this.repaint(y, m, true, e);
			return;
		}
		// cal
		if(id < 0) return;
		// prev/next
		if(id >= 500 && id <= 502) this.repaint(y, m + id - 501, true, e);
		if(this.readOnly) return;
		// -3 - request to scroll vis month
		var d, i = -3, toggle = e.ctrlKey;
		// today
		if(id == 508){y = this.today[0]; m = this.today[1]; d = this.today[2]; toggle = false;}
		else
		{
			if(id >= 42) return;
			// days
			o = this.Days[id];
			id = this.Events.dateClicked;
			y = o.year; m = o.month; d = o.day;
			if(!ig_csom.isEmpty(id)) this.fireEvt(this.nd(y, m, d), id, e, true);
			this.doPost(0);
			if(this.isSel(o.index)){if(!toggle && this.ID.indexOf("_DrpPnl_Calendar1") < 2) return;}
			else toggle = false;
			if(!this.fixVis || this.Days[15].month == m) i = o.index;
		}
		if(this.minMax(y, m, d) != null) return;
		this.select(y, m, d, null, this.allowNull && toggle, i, e, false);
	}
	// end init
	this.elemID = -1;
	// public: all methods below
	this.getVisibleMonth = function(){return this.nd(this.Days[15].year, this.Days[15].month, 1);}
	this.setVisibleMonth = function(d){if(d != null) this.repaint(this.df(d, 0), this.df(d, 1), true);}
	this.getSelectedDate = function()
	{return (this.selDate[2] < 0) ? null : this.nd(this.selDate[0], this.selDate[1], this.selDate[2]);}
	this.setSelectedDate = function(date)
	{
		var y = -1, m = -1, d = -1;
		if(date != null){y = this.df(date, 0); m = this.df(date, 1); d = this.df(date, 2);}
		else if(!this.allowNull){y = this.today[0]; m = this.today[1]; d = this.today[2];}
		if(this.isSelected(y, m, d, -1)) return;
		if(d > 0) date = this.minMax(y, m, d);
		if(date != null)
		{
			if(date != null){y = this.df(date, 0); m = this.df(date, 1); d = this.df(date, 2);}
			if(this.isSelected(y, m, d, -1)) return;
		}
		this.select(y, m, d, date, d < 1, -3, null, false);
//		this.select(y, m, d, date, false, show ? -3 : -2, null, false);
	}
	this.getFirstDayOfWeek = function(){return this.dow;}
	this.setFirstDayOfWeek = function(v)
	{
		if(v == null) return;
		v = (v + 7) % 7;
		if(v == this.dow || v < 0) return;
		var i = -1, x = (v + 7 - this.dow) % 7, old = new Array(7);
		while(++i < 7) old[i] = this.getText(this.elems[7].cells[i]);
		while(--i >= 0) this.setText(this.elems[7].cells[i], old[(i + x) % 7]);
		this.dow = v;
		this.repaint();
		this.update("FirstDayOfWeek", v);
	}
	this.update = function(p, v, p0)
	{
		if(this.elemViewState == null) return "";
		var n = this.viewState.addNode("x", true);
		if(p == null || p.length == null)
		{
			v = this.Days[15].year + "x" + this.Days[15].month + "x" + this.selDate[0] + "x" + this.selDate[1] + "x" + this.selDate[2];
			if(p != null) v += "x" + p;
			p = "PostData";
		}
		else
		{
			n = n.addNode("LAYOUT", true);
			if(p0 != null) n = n.addNode(p0);
		}
		n.setPropertyValue(p, v);
		return this.elemViewState.value = this.viewState.getText();
	}
	// prviate
	this.balanceTabIndex = function(e, oldItem, newItem, bFocus)
	{
		if (!e && !oldItem && !newItem) return true;

		if(newItem)
		{
			if (this.IsTabableObject(newItem))
			{
				newItem.tabIndex = this.tabIndex;
				if(bFocus)
					try
					{
						newItem.focus();
					}
					catch(e)
					{}
			}
			else return false;
		}
		if (oldItem)
		{
			oldItem.tabIndex = -1;
		}
		return true;
	}
	this.getDateInfo = function(){return this.info;}
	//
	this.rect = function(o, s)
	{
		if(s == 0)//w
		{
			if((s = o.offsetWidth) != null) return s;
			return ((s = o.style.pixelWidth) != null) ? s : -10000;
		}
		if(s == 1)//h
		{
			if((s = o.offsetHeight) != null) return s;
			return ((s = o.style.pixelHeight) != null) ? s : -10000;
		}
		if(s == 2)//x
		{
			if((s = o.offsetLeft) != null) return s;
			return ((s = o.style.pixelLeft) != null) ? s : -10000;
		}
		if(s == 3)//y
		{
			if((s = o.offsetTop) != null) return s;
			return ((s = o.style.pixelTop) != null) ? s : -10000;
		}
	}
	// private
	// scans through currently existing cells to determine if the date you are looking for is 
	// available in the current collection
	this.getDateCellObject = function(dateValue)
	{
		if(!dateValue) return;
		var iDay = dateValue.getDate();
		var iMonth = dateValue.getMonth()+1;
		var iYear = dateValue.getYear();
		var iDateClean = new Date(iYear,iMonth,iDay);
		var iCalVisMinDate = new Date(this.Days[0].year,this.Days[0].month,this.Days[0].day);
		var iCalVisMaxDate = new Date(this.Days[41].year,this.Days[41].month,this.Days[41].day);
		if (!(iDateClean>=iCalVisMinDate && iDateClean<=iCalVisMaxDate)) return null;
		var oDay = null;
		for (var i = this.Days.length - 1 ; i>=0 ; i--)
		{
			oDay=this.Days[i];
			if (iDay==oDay.day && iMonth==oDay.month && iYear==oDay.year) return oDay.element;
		}
		return null;
	}
	this.IsTabableObject=function(elem){return true;}
	// private
	this.setDefaultTabableDateCell = function(focus)
	{
		if (this.tabIndex<0) return;
		var initalDate = this.getSelectedDate();
		var oCalElm = this.getDateCellObject(initalDate);
		if (!oCalElm || !this.balanceTabIndex(null, null,oCalElm,focus))
		{
			oCalElm = this.getDateCellObject(new Date());
			if (!oCalElm || !this.balanceTabIndex(null, null,oCalElm,focus))
				for (var i=0;i<this.Days.length;i++)
					if (this.balanceTabIndex(null, null,this.Days[i].Element,focus))
						break;
		}
	}
	
	if (this.tabIndex>-1) this.setDefaultTabableDateCell(false);
	
}
//
function igcal_event(e)
{
	if(e == null) if((e = window.event) == null) return;
	var o = e.srcElement;
	if(o == null) if((o = e.target) == null) o = this;
	// added for keyboard support
	var k = e.type == "keydown";
	if(!k) if(e.type != "change") if(e.button > 1 || e.shiftKey || e.altKey) return;
	if(e.type == "unload") ig_dispose(igcal_all);
	if((o = igcal_getCalendarById(null, o)) != null) 
		if(o.click != null) 
			if(k) o.keydownHandler(e); 
			else o.click(e);
}
function igcal_kbKD(e)
{
		var oWC = igcal_getCalendarById(null,e.srcElement);
		if (!oWC) return;
		
		var oldId = e.srcElement.id;
		var y = oWC.Days[oWC.elemID].year;
		var m = oWC.Days[oWC.elemID].month;
		var d = oWC.Days[oWC.elemID].day;
		
		switch(e.keyCode)
		{
			case 40:// arrow down				
				if (oWC.elemID<35)				
					 oWC.balanceTabIndex(e,e.srcElement, ig_csom.getElementById(oWC.ID + "_d" + (oWC.elemID+7)),true);
				break;
			case 39:// arrow right
				if (oWC.elemID<41)
					 oWC.balanceTabIndex(e,e.srcElement, ig_csom.getElementById(oWC.ID + "_d" + (oWC.elemID+1)),true);
				else
				{					
					if(oWC.minMax(y, m, d+1) != null) return;
					oWC.repaint(y, m, true, e);
					oWC.balanceTabIndex(e,e.srcElement,ig_csom.getElementById(oWC.ID + "_d0"),true);
				}					 
				break;
			case 38:// arrow up
				if (oWC.elemID>6)
					 oWC.balanceTabIndex(e,e.srcElement, ig_csom.getElementById(oWC.ID + "_d" + (oWC.elemID-7)),true);
				break;
			case 37:// arrow left				
				if (oWC.elemID>0) 				
					 oWC.balanceTabIndex(e,e.srcElement, ig_csom.getElementById(oWC.ID + "_d" + (oWC.elemID-1)),true);
				else
				{					
					if(oWC.minMax(y, m, d-1) != null) return;
					oWC.repaint(y, m, true, e);
					oWC.balanceTabIndex(e,e.srcElement,ig_csom.getElementById(oWC.ID + "_d41"),true);
				}					 
				break;
			case 32:
					var oDate = new Date(oWC.Days[oWC.elemID].year,oWC.Days[oWC.elemID].month-1, oWC.Days[oWC.elemID].day);
					oWC.balanceTabIndex(e,e.srcElement,null,false);
					oWC.setSelectedDate(oDate);
					oDate = oWC.getDateCellObject(oWC.getSelectedDate());					
					oWC.balanceTabIndex(e,null,oDate,true);
					break;	
			default:
				break;	
		}
}