// Project: Dynamic Date Selector (DtTvB) - 2006-03-16
// Script featured on JavaScript Kit- http://www.javascriptkit.com
// Modifié par Adrien Lasserre pour www.soldes-astuces.com
// Pour fonctionner sous WordPress (2.8)
// Novembre 2009

// Nécessite JQuery pour fonctionner
// #gestiondb_calendrier_box > #gestiondb_calendrier_contenu

function GestionDBCalendrier(quiestce,locking) {
	var ds_i_date = new Date();
	var ds_c_month = ds_i_date.getMonth() + 1;
	var ds_c_year = ds_i_date.getFullYear();
	
	// quelle variable est instancée ?
	var qui = quiestce ? quiestce : null;
	// si un calendrier a déjà été ouvert, il est fort à parier que si on le reouvre c'est pour donner un nouvelle date postérieure ou proche de l'ancienne. Donc acte.
	var ancienne_date = new Date();
	// bloqué ? (car on ne peut aller moins loin que l'ancienne date)
		var lock = false;
		
	// Get the left and the top of the element.
	function ds_getleft(el) {
		return jQuery(el).offset().left;
	}
	function ds_gettop(el) {
		return jQuery(el).offset().top;
	}
	// Output Element
	var ds_oe = '#gestiondb_calendrier_contenu';
	// Container
	var ds_ce = '#gestiondb_calendrier_box';

	// Output Buffering
	var ds_ob = '';
	function ds_ob_clean() {
		ds_ob = '';
	}
	function ds_ob_flush() {
		jQuery(ds_oe).html(ds_ob);
		ds_ob_clean();
	}
	function ds_echo(t) {
		ds_ob += t;
	}

	// Text Element...
	var ds_element = '';

	var ds_monthnames = [
	'Janvier', 'Février', 'Mars', 'Avril', 'Mai', 'Juin',
	'Juillet', 'Aout', 'Septembre', 'Octobre', 'Novembre', 'Décembre'
	];
	// You can translate it for your language.

	var ds_daynames = ['Lun', 'Mar', 'Me', 'Jeu', 'Ven', 'Sam','Dim'];
	// You can translate it for your language.

	// Calendar template
	
	/* virés
	'<td class="ds_head" style="cursor: pointer" onclick="'+qui+'.ds_py();">&lt;&lt;</td>';
	s += '<td class="ds_head" style="cursor: pointer" onclick="'+qui+'.ds_ny();">&gt;&gt;</td>';
	s += '<td class="ds_head" style="cursor: pointer" onclick="'+qui+'.ds_hi();" colspan="3">[Fermer]</td>';
	*/
	function ds_template_main_above(t) {
		s = '<table cellpadding="3" cellspacing="1" class="ds_tbl">' + '<tr>';
		s +='<td class="ds_head" id="calendrier_pm" style="cursor: pointer" onclick="'+qui+'.ds_pm();">&lt;</td>';
		s += '<td colspan="5" class="ds_head">' + t + '</td>';
		s += '<td class="ds_head" id="calendrier_nm" style="cursor: pointer" onclick="'+qui+'.ds_nm();">&gt;</td>';
		s += '</tr>';
	   	s += '<tr>';
		return(s);
	}

	function ds_template_day_row(t) {
		return '<td class="ds_subhead">' + t + '</td>';
		// Define width in CSS, XHTML 1.0 Strict doesn't have width property for it.
	}

	function ds_template_new_week() {
		return '</tr><tr>';
	}

	function ds_template_blank_cell(colspan) {
		// ON commence la semaine le lundi !
		colspan = 7+colspan-1;
		colspan %= 7;
		return '<td colspan="' + colspan + '"></td>';
	}

	function ds_template_day(d, m, y) {
		unedate = new  Date(y, m-1, d);
		if(lock & ancienne_date > unedate) {
			return '<td class="ds_cell"> &nbsp; </td>'; 
		} else {
			return '<td class="ds_cell" onclick="'+qui+'.ds_onclick(' + d + ',' + m + ',' + y + ')">' + d + '</td>';
		}
		// Define width the day row.
	}

	function ds_template_main_below() {
		return '</tr>' + '</table>';
	}

	// This one draws calendar...
	function ds_draw_calendar(m, y) {
		// First clean the output buffer.
		ds_ob_clean();
		// Here we go, do the header
		ds_echo (ds_template_main_above(ds_monthnames[m-1] + ' ' + y));
		for (i = 0; i < 7; i ++) {
			ds_echo(ds_template_day_row(ds_daynames[i]));
		}
		// Make a date object.
		var ds_dc_date = new Date();
		ds_dc_date.setMonth(m-1);
		ds_dc_date.setFullYear(y);
		ds_dc_date.setDate(1);
		if (m == 1 || m == 3 || m == 5 || m == 7 || m == 8 || m == 10 || m == 12) {
			days = 31;
		} else if (m == 4 || m == 6 || m == 9 || m == 11) {
			days = 30;
		} else {
			days = (y % 4 == 0) ? 29 : 28;
		}
		var first_day = ds_dc_date.getDay();
		var first_loop = 1;
		// Start the first week
		ds_echo (ds_template_new_week());
		// If sunday is not the first day of the month, make a blank cell...
		if (first_day != 1) {
			ds_echo (ds_template_blank_cell(first_day));
		}
		var j = first_day;
		for (i = 0; i < days; i ++) {
			// Today is monday, make a new week.
			// If this monday is the first day of the month,
			// we've made a new row for you already.
			if (j == 1 && !first_loop) {
				// New week!!
				ds_echo (ds_template_new_week());
			}
			// Make a row of that day!
			ds_echo (ds_template_day(i + 1, m, y));
			// This is not first loop anymore...
			first_loop = 0;
			// What is the next day?
			j ++;
			j %= 7;
		}
		// Do the footer
		ds_echo (ds_template_main_below());
		// And let's display..
		ds_ob_flush();
		// Scroll it into view.
		jQuery(ds_ce).css("display","block");
		//alert(jQuery(ds_ce).attr("id"));
	}

	
	// FONCTIONS PUBLIQUES
	// A function to show the calendar.
	// When user click on the date, it will set the content of t.
	this.ds_sh = function(t) {
		// Qui nous appelle ?
		qui = arguments[1] ? arguments[1] : qui;
		// Blocage ?
		locking = arguments[2] ? true : false;
		lock = locking;
		
		if(!qui) {
			// Pas de callback possible, le calendrier est nul et non avenu
			return;
		}
		
		// Set the element to set...
		ds_element = t;
		// Make a new date, and set the current month and year.
		ds_sh_date = ancienne_date ? ancienne_date : new Date();
		ds_c_month = ds_sh_date.getMonth() + 1;
		ds_c_year = ds_sh_date.getFullYear();
		// Draw the calendar
		ds_draw_calendar(ds_c_month, ds_c_year);
		// To change the position properly, we must show it first.
		jQuery(ds_ce).css("display","block");
		jQuery(ds_ce).blur(function() { this.ds_hi() });
		// Move the calendar container!
		the_left = ds_getleft(t);
		the_top = ds_gettop(t) + t.offsetHeight;
		jQuery(ds_ce).css("left", the_left + 'px');
		jQuery(ds_ce).css("top", the_top + 'px');
		// Scroll it into view.
		jQuery(ds_ce).css("display","block");
		//alert(jQuery(ds_ce).attr("id"));
	};

	// Hide the calendar.
	this.ds_hi = function() {
		jQuery(ds_ce).css("display", "none");
	};
	// public fonction
	this.cacher = function() {
	}

	// Moves to the next month...
	this.ds_nm = function() {
		// Increase the current month.
		ds_c_month ++;
		// We have passed December, let's go to the next year.
		// Increase the current year, and set the current month to January.
		if (ds_c_month > 12) {
			ds_c_month = 1; 
			ds_c_year++;
		}
		// Redraw the calendar.
		ds_draw_calendar(ds_c_month, ds_c_year);
	};

	// Moves to the previous month...
	this.ds_pm = function() {
		if(lock & ds_c_year == ancienne_date.getFullYear() & ds_c_month == ancienne_date.getMonth()+1) {
			// On ne peut pas aller moins bas, car bloqué
		} else {
			ds_c_month = ds_c_month - 1; // Can't use dash-dash here, it will make the page invalid.
			// We have passed January, let's go back to the previous year.
			// Decrease the current year, and set the current month to December.
			if (ds_c_month < 1) {
				ds_c_month = 12; 
				ds_c_year = ds_c_year - 1; // Can't use dash-dash here, it will make the page invalid.
			}
			// Redraw the calendar.
			ds_draw_calendar(ds_c_month, ds_c_year);
		}
	};
	

	// Moves to the next year...
	this.ds_ny = function() {
		// Increase the current year.
		ds_c_year++;
		// Redraw the calendar.
		ds_draw_calendar(ds_c_month, ds_c_year);
	};

	// Moves to the previous year...
	this.ds_py = function() {
		// Decrease the current year.
		ds_c_year = ds_c_year - 1; // Can't use dash-dash here, it will make the page invalid.
		// Redraw the calendar.
		ds_draw_calendar(ds_c_month, ds_c_year);
	};

	// Format the date to output.
	function ds_format_date(d, m, y) {
		// 2 digits month.
		m2 = '00' + m;
		m2 = m2.substr(m2.length - 2);
		// 2 digits day.
		d2 = '00' + d;
		d2 = d2.substr(d2.length - 2);
		// YYYY-MM-DD
		return d2 + '/' + m2 + '/' + y;
	}

	// When the user clicks the day.
	this.ds_onclick = function(d, m, y) {
		// Hide the calendar.
		this.ds_hi();
		// Set the value of it, if we can.
		if (typeof(jQuery(ds_element).attr("value")) != 'undefined') {
			if(!lock) { ancienne_date = new Date (y, m-1, d); }
			jQuery(ds_element).attr("value", ds_format_date(d, m, y));
		// Maybe we want to set the HTML in it.
		} else if (typeof(jQuery(ds_element).html()) != 'undefined') {
			jQuery(ds_element).html(ds_format_date(d, m, y));
		// I don't know how should we display it, just alert it to user.
		} else {
			//alert (ds_format_date(d, m, y));
		}
	};
}

gestiondb_calendrier = new GestionDBCalendrier('gestiondb_calendrier');