/**
* Filename.......: calendar.js
* Project........: Popup Calendar
* Last Modified..: $Date: 2002/07/22 18:17:05 $
* CVS Revision...: $Revision: 1.2 $
* Copyright......: 2001, 2002 Richard Heyes
*/

/**
* Global variables
*/
dynCalendar_layers          = new Array();
dynCalendar_mouseoverStatus = false;
dynCalendar_mouseX          = 0;
dynCalendar_mouseY          = 0;
dynMonthNames 				= new Array('Janvier', 'Fevrier', 'Mars', 'Avril', 'Mai', 'Juin', 'Juillet', 'Aout', 'Septembre', 'Octobre', 'Novembre', 'Decembre');
dynDayNames					= new Array('L','M','M','J','V','S','D');


// detecte si le browser supporte ce script
var agt=navigator.userAgent.toLowerCase();
var is_major = parseInt(navigator.appVersion);
var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
&& (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
&& (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1));


var is_ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
var is_ie3    = (is_ie && (is_major < 4));
var is_ie4    = (is_ie && (is_major == 4) && (agt.indexOf("msie 4")!=-1) );
var is_ie5up  = (is_ie && !is_ie3 && !is_ie4);
var is_agoodnav = (is_ie5up || is_nav && (is_major >= 5) || (agt.indexOf('gecko') != -1))

/**
* The calendar constructor
*
* @access public
* @param string objName      Name of the object that you create
* @param string callbackFunc Name of the callback function
* @param string OPTIONAL     Optional layer name
* @param string OPTIONAL     Optional images path
*/


function dynCalendar(objName, callbackFunc)
{
	/**
	* Properties
	*/
	// Todays date
	this.today          = new Date();
	this.date           = this.today.getDate();
	this.month          = this.today.getMonth();
	this.year           = this.today.getFullYear();

	this.objName        = objName;
	this.callbackFunc   = callbackFunc;
	this.imagesPath     = arguments[2] ? arguments[2] : '/dynCalendar';
	this.layerID        = arguments[3] ? arguments[3] : 'dynCalendar_layer_' + dynCalendar_layers.length;

	this.offsetX        = 5;
	this.offsetY        = 5;

	this.useMonthCombo  = true;
	this.useYearCombo   = true;
	this.yearComboRange = 5;

	this.currentMonth   = this.month;
	this.currentYear    = this.year;

	/**
	* Public Methods
	*/
	this.show				= dynCalendar_show;
	this.writeHTML			= dynCalendar_writeHTML;
	this.writeDiv			= dynCalendar_writeDiv;
	this.setDate			= dynCalendar_setDate;

	// Accessor methods
	this.setOffset         = dynCalendar_setOffset;
	this.setOffsetX        = dynCalendar_setOffsetX;
	this.setOffsetY        = dynCalendar_setOffsetY;
	this.setImagesPath     = dynCalendar_setImagesPath;
	this.setMonthCombo     = dynCalendar_setMonthCombo;
	this.setYearCombo      = dynCalendar_setYearCombo;
	this.setCurrentMonth   = dynCalendar_setCurrentMonth;
	this.setCurrentYear    = dynCalendar_setCurrentYear;
	this.setYearComboRange = dynCalendar_setYearComboRange;
	this.setMonthNames	   = dynCalendar_setMonthNames;
	this.setDayNames	   = dynCalendar_setDayNames;

	/**
	* Private methods
	*/
	// Layer manipulation
	this._getLayer         = dynCalendar_getLayer;
	this._hideLayer        = dynCalendar_hideLayer;
	this._showLayer        = dynCalendar_showLayer;
	this._setLayerPosition = dynCalendar_setLayerPosition;
	this._setHTML          = dynCalendar_setHTML;

	// Miscellaneous
	this._getDaysInMonth   = dynCalendar_getDaysInMonth;
	this._mouseover        = dynCalendar_mouseover;

	/**
	* Constructor type code
	*/
	dynCalendar_layers[dynCalendar_layers.length] = this;
	this.writeHTML(arguments[4]?arguments[4]:false);
}

function dynCalendar_setDate(date) {
	var chaine = new String(date);
	this.today = new Date();
	this.today.setFullYear(chaine.substr(0,4));
	this.today.setMonth(chaine.substr(4,2)-1);
	this.today.setDate(chaine.substr(6,2));
	this.date = this.today.getDate();
	this.month = this.today.getMonth();
	this.year = this.today.getFullYear();
	this.setCurrentMonth(this.month);
	this.setCurrentYear(this.year);
}
/**
* Shows the calendar, or updates the layer if
* already visible.
*
* @access public
* @param integer month Optional month number (0-11)
* @param integer year  Optional year (YYYY format)
*/
function dynCalendar_show()
{
	// Variable declarations to prevent globalisation
	var month, year, monthnames, numdays, thisMonth, firstOfMonth;
	var ret, row, i, cssClass, linkHTML, previousMonth, previousYear;
	var nextMonth, nextYear, prevImgHTML, prevLinkHTML, nextImgHTML, nextLinkHTML;
	var monthComboOptions, monthCombo, yearComboOptions, yearCombo, html;

	this.currentMonth = month = arguments[0] != null ? arguments[0] : this.currentMonth;
	this.currentYear  = year  = arguments[1] != null ? arguments[1] : this.currentYear;

	monthnames = dynMonthNames;
	numdays    = this._getDaysInMonth(month, year);

	thisMonth    = new Date(year, month, 1);
	firstOfMonth = thisMonth.getDay()-1;

	// First few blanks up to first day
	ret = new Array(new Array());
	for(i=0; i<firstOfMonth; i++){
		ret[0][ret[0].length] = '<td class="dynCalendar_day">&nbsp;</td>';
	}

	// Main body of calendar
	row = 0;
	i   = 1;
	while(i <= numdays){
		if(ret[row].length == 7){
			ret[++row] = new Array();
		}

		/**
		* Generate this cells' HTML
		*/
		cssClass = (i == this.date && month == this.month && year == this.year) ? 'dynCalendar_today' : 'dynCalendar_day';
		linkHTML = '<a href="javascript: ' + this.callbackFunc + '(' + i + ', ' + (Number(month) + 1) + ', ' + year + '); ' + this.objName + '._hideLayer()">' + (i++) + '</a>';
		ret[row][ret[row].length] = '<td align="center" class="' + cssClass + '">' + linkHTML + '</td>';
	}
	
	while((ret[row].length)%7 != 0) {
		ret[row][ret[row].length] = '<td class="dynCalendar_day">&nbsp;</td>';
	}

	// Format the HTML
	for(i=0; i<ret.length; i++){
		ret[i] = ret[i].join('\n') + '\n';
	}

	previousYear  = thisMonth.getFullYear();
	previousMonth = thisMonth.getMonth() - 1;
	if(previousMonth < 0){
		previousMonth = 11;
		previousYear--;
	}

	nextYear  = thisMonth.getFullYear();
	nextMonth = thisMonth.getMonth() + 1;
	if(nextMonth > 11){
		nextMonth = 0;
		nextYear++;
	}

	prevImgHTML  = '<img src="' + this.imagesPath + '/resultset_previous.png" alt="<<" border="0" />';
	prevLinkHTML = '<a href="javascript: ' + this.objName + '.show(' + previousMonth + ', ' + previousYear + ')">' + prevImgHTML + '</a>';
	nextImgHTML  = '<img src="' + this.imagesPath + '/resultset_next.png" alt=">>" border="0" />';
	nextLinkHTML = '<a href="javascript: ' + this.objName + '.show(' + nextMonth + ', ' + nextYear + ')">' + nextImgHTML + '</a>';

	/**
	* Build month combo
	*/
	if (this.useMonthCombo) {
		monthComboOptions = '';
		for (i=0; i<12; i++) {
			selected = (i == thisMonth.getMonth() ? 'selected="selected"' : '');
			monthComboOptions += '<option value="' + i + '" ' + selected + '>' + monthnames[i] + '</option>';
		}
		monthCombo = '<select name="months" onchange="' + this.objName + '.show(this.options[this.selectedIndex].value, ' + this.objName + '.currentYear)">' + monthComboOptions + '</select>';
	} else {
		monthCombo = monthnames[thisMonth.getMonth()];
	}

	/**
	* Build year combo
	*/
	if (this.useYearCombo) {
		yearComboOptions = '';
		for (i = thisMonth.getFullYear() - this.yearComboRange; i <= (thisMonth.getFullYear() + this.yearComboRange); i++) {
			selected = (i == thisMonth.getFullYear() ? 'selected="selected"' : '');
			yearComboOptions += '<option value="' + i + '" ' + selected + '>' + i + '</option>';
		}
		yearCombo = '<select style="border: 1px groove" name="years" onchange="' + this.objName + '.show(' + this.objName + '.currentMonth, this.options[this.selectedIndex].value)">' + yearComboOptions + '</select>';
	} else {
		yearCombo = thisMonth.getFullYear();
	}

	html = '<table border="0" cellspacing="1" cellpadding="0">';
	html += '<tr><td class="dynCalendar_header" colspan="7" nowrap="nowrap">' + prevLinkHTML + monthCombo + ' ' + yearCombo + nextLinkHTML + '</td></tr>';
	html += '<tr>';
	for (i=0; i<=6;i++) {
		html += '<td class="dynCalendar_dayname">'+dynDayNames[i]+'</td>';
	}
	html += '</tr><tr>' + ret.join('</tr>\n<tr>') + '</tr>';
	html += '</table>';

	this._setHTML(html);
	if (!arguments[0] && !arguments[1]) {
		this._showLayer();
		this._setLayerPosition();
	}
}

/**
* Writes HTML to document for layer
*
* @access public
*/
function dynCalendar_writeHTML(showDiv)
{
	/*if (is_agoodnav) {
		document.write('<a href="javascript: ' + this.objName + '.show()"><img name="ImgCal'+this.objName+'" id="ImgCal'+this.objName+'" src="' + this.imagesPath + '/dynCalendar.gif" border="0" width="16" height="16" /></a>');
		if(ShowDiv) {
			document.write('<div class="dynCalendar" id="' + this.layerID + '" onmouseover="' + this.objName + '._mouseover(true)" onmouseout="' + this.objName + '._mouseover(false)"></div>');
		}
	}*/
}

function dynCalendar_writeDiv() {
	document.write('<div class="dynCalendar" id="' + this.layerID + '" onmouseover="' + this.objName + '._mouseover(true)" onmouseout="' + this.objName + '._mouseover(false)"></div>');
}


function dynCalendar_setMonthNames(mn) {
	dynMonthNames = mn;
}

function dynCalendar_setDayNames(dn) {
	dynDayNames = dn;
}
/**
* Sets the offset to the mouse position
* that the calendar appears at.
*
* @access public
* @param integer Xoffset Number of pixels for vertical
*                        offset from mouse position
* @param integer Yoffset Number of pixels for horizontal
*                        offset from mouse position
*/

function dynCalendar_setOffset(Xoffset, Yoffset)
{
	this.setOffsetX(Xoffset);
	this.setOffsetY(Yoffset);
}

/**
* Sets the X offset to the mouse position
* that the calendar appears at.
*
* @access public
* @param integer Xoffset Number of pixels for horizontal
*                        offset from mouse position
*/
function dynCalendar_setOffsetX(Xoffset)
{
	this.offsetX = Xoffset;
}

/**
* Sets the Y offset to the mouse position
* that the calendar appears at.
*
* @access public
* @param integer Yoffset Number of pixels for vertical
*                        offset from mouse position
*/
function dynCalendar_setOffsetY(Yoffset)
{
	this.offsetY = Yoffset;
}

/**
* Sets the images path
*
* @access public
* @param string path Path to use for images
*/
function dynCalendar_setImagesPath(path)
{
	this.imagesPath = path;
}

/**
* Turns on/off the month dropdown
*
* @access public
* @param boolean useMonthCombo Whether to use month dropdown or not
*/
function dynCalendar_setMonthCombo(useMonthCombo)
{
	this.useMonthCombo = useMonthCombo;
}

/**
* Turns on/off the year dropdown
*
* @access public
* @param boolean useYearCombo Whether to use year dropdown or not
*/
function dynCalendar_setYearCombo(useYearCombo)
{
	this.useYearCombo = useYearCombo;
}

/**
* Sets the current month being displayed
*
* @access public
* @param boolean month The month to set the current month to
*/
function dynCalendar_setCurrentMonth(month)
{
	this.currentMonth = month;
}

/**
* Sets the current month being displayed
*
* @access public
* @param boolean year The year to set the current year to
*/
function dynCalendar_setCurrentYear(year)
{
	this.currentYear = year;
}

/**
* Sets the range of the year combo. Displays this number of
* years either side of the year being displayed.
*
* @access public
* @param integer range The range to set
*/
function dynCalendar_setYearComboRange(range)
{
	this.yearComboRange = range;
}

/**
* Returns the layer object
*
* @access private
*/
function dynCalendar_getLayer()
{
	var layerID = this.layerID;

	if (document.getElementById(layerID)) {

		return document.getElementById(layerID);

	} else if (document.all) {
		return document.all(layerID);
	}
}

/**
* Hides the calendar layer
*
* @access private
*/
function dynCalendar_hideLayer()
{
	this._getLayer().style.visibility = 'hidden';
}

/**
* Shows the calendar layer
*
* @access private
*/
function dynCalendar_showLayer()
{
	this._getLayer().style.visibility = 'visible';
}

/**
* Sets the layers position
*
* @access private
*/
function dynCalendar_setLayerPosition()
{
	this._getLayer().style.top  = (dynCalendar_mouseY + this.offsetY) + 'px';
	this._getLayer().style.left = (dynCalendar_mouseX + this.offsetX) + 'px';
}

/**
* Sets the innerHTML attribute of the layer
*
* @access private
*/
function dynCalendar_setHTML(html)
{
	this._getLayer().innerHTML = html;
}

/**
* Returns number of days in the supplied month
*
* @access private
* @param integer month The month to get number of days in
* @param integer year  The year of the month in question
*/
function dynCalendar_getDaysInMonth(month, year)
{
	monthdays = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
	if (month != 1) {
		return monthdays[month];
	} else {
		return ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0 ? 29 : 28);
	}
}

/**
* onMouse(Over|Out) event handler
*
* @access private
* @param boolean status Whether the mouse is over the
*                       calendar or not
*/
function dynCalendar_mouseover(status)
{
	dynCalendar_mouseoverStatus = status;
	return true;
}

/**
* onMouseMove event handler
*/
dynCalendar_oldOnmousemove = document.onmousemove ? document.onmousemove : new Function;

document.onmousemove = function ()
{
	if (is_agoodnav) {


		var x=0; 
		var y=0;
		if (document.layers) {
			x=arguments[0].x; 
			y=arguments[0].y;
		}
		if (document.all) {
			x=event.clientX; 
			y=event.clientY;
		} else {
			if (document.getElementById) {
				x=arguments[0].clientX; 
				y=arguments[0].clientY;
			}


		}
		dynCalendar_mouseX = x;
		dynCalendar_mouseY = y;

		dynCalendar_oldOnmousemove();
	}
}

/**
* Callbacks for document.onclick
*/
dynCalendar_oldOnclick = document.onclick ? document.onclick : new Function;

document.onclick = function ()
{

	if (is_agoodnav) {
		if(!dynCalendar_mouseoverStatus){
			for(i=0; i<dynCalendar_layers.length; ++i){
				dynCalendar_layers[i]._hideLayer();
			}
		}

		dynCalendar_oldOnclick(arguments[0] ? arguments[0] : null);
	}
}