web/data/cubicweb.calendar.js
author Sylvain Thénault <sylvain.thenault@logilab.fr>
Mon, 08 Feb 2010 21:21:31 +0100
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/*
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 *  This file contains Calendar utilities
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 *  :organization: Logilab
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 *  :copyright: 2003-2008 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
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 *  :contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
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 */
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CubicWeb.require('python.js');
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CubicWeb.require('ajax.js');
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// IMPORTANT NOTE: the variables DAYNAMES AND MONTHNAMES will be added
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//                 by cubicweb automatically
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// dynamically computed (and cached)
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var _CAL_HEADER = null;
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TODAY = new Date();
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/*
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 * Calendar (graphical) widget
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 * public methods are :
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 *   __init__ :
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 *    @param containerId: the DOM node's ID where the calendar will be displayed
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 *    @param inputId: which input needs to be updated when a date is selected
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 *    @param year, @param month: year and month to be displayed
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 *    @param cssclass: CSS class of the calendar widget (default is commandCal)
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 *
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 *   show() / hide():
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 *    show or hide the calendar widget
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 *
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 *   toggle():
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 *    show (resp. hide) the calendar if it's hidden (resp. displayed)
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 * 
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 *   displayNextMonth(): (resp. displayPreviousMonth())
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 *    update the calendar to display next (resp. previous) month
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 */
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Calendar = function(containerId, inputId, year, month, cssclass) {
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    this.containerId = containerId;
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    this.inputId = inputId;
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    this.year = year;
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    this.month = month-1; // Javascript's counter starts at 0 for january
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    this.cssclass = cssclass || "popupCalendar";
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    this.visible = false;
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    this.domtable = null;
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    this.cellprops = { 'onclick'     : function() {dateSelected(this, containerId); },
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		       'onmouseover' : function() {this.style.fontWeight = 'bold'; },
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		       'onmouseout'  : function() {this.style.fontWeight = 'normal';}
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		     }
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    this.todayprops = jQuery.extend({}, this.cellprops, {'class' : 'today'});
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    this._rowdisplay = function(row) {
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	return TR(null, map(partial(TD, this.cellprops), row));
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    }
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    this._makecell = function(cellinfo) {
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	return TD(cellinfo[0], cellinfo[1]);
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    }
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    /* utility function (the only use for now is inside the calendar) */
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    this._uppercaseFirst = function(s) { return s.charAt(0).toUpperCase(); }
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    /* accepts the cells data and builds the corresponding TR nodes
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     * @param rows a list of list of couples (daynum, cssprops)
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     */
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    this._domForRows = function(rows) {
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	var lines = []
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	for (i=0; i<rows.length; i++) {
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	    lines.push(TR(null, map(this._makecell, rows[i])));
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	}
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	return lines;
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    }
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    /* builds the calendar headers */
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    this._headdisplay = function(row) {
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	if (_CAL_HEADER) {
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	    return _CAL_HEADER;
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	}
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	daynames = map(this._uppercaseFirst, DAYNAMES);
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	_CAL_HEADER = TR(null, map(partial(TH, null), daynames));
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	return _CAL_HEADER;
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    }
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    this._getrows = function() {
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	var rows = [];
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	var firstday = new Date(this.year, this.month, 1);
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	var stopdate = firstday.nextMonth();
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	var curdate = firstday.sub(firstday.getRealDay());
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	while (curdate.getTime() < stopdate) {
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	    var row = []
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	    for (var i=0; i<7; i++) {
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		if (curdate.getMonth() == this.month) {
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		    props = curdate.equals(TODAY) ? this.todayprops:this.cellprops;
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		    row.push([props, curdate.getDate()]);
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		} else {
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		    row.push([this.cellprops, ""]);
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		}
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		curdate.iadd(1);
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	    }
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	    rows.push(row);
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	}
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	return rows;
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    }
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    this._makecal = function() {
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	var rows = this._getrows();
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	var monthname = MONTHNAMES[this.month] + " " + this.year;
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	var prevlink = "javascript: togglePreviousMonth('" + this.containerId + "');";
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	var nextlink = "javascript: toggleNextMonth('" + this.containerId + "');";
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	this.domtable = TABLE({'class': this.cssclass},
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			      THEAD(null, TR(null,
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					     TH(null, A({'href' : prevlink}, "<<")),
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					     // IE 6/7 requires colSpan instead of colspan
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					     TH({'colSpan': 5, 'colspan':5, 'style' : "text-align: center;"}, monthname),
0
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					     TH(null, A({'href' : nextlink}, ">>")))),
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			      TBODY(null,
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				    this._headdisplay(),
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				    this._domForRows(rows))
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			     );
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	return this.domtable;
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    }
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    this._updateDiv = function() {
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	if (!this.domtable) {
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	    this._makecal();
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	}
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	jqNode(this.containerId).empty().append(this.domtable);
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	// replaceChildNodes($(this.containerId), this.domtable);
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    }
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    this.displayNextMonth = function() {
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	this.domtable = null;
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	if (this.month == 11) {
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	    this.year++;
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	}
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	this.month = (this.month+1) % 12;
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	this._updateDiv();
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    }
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    this.displayPreviousMonth = function() {
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	this.domtable = null;
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	if (this.month == 0) {
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	    this.year--;
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	}
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	this.month = (this.month+11) % 12;
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	this._updateDiv();
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    }
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    this.show = function() {
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	if (!this.visible) {
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	    container = jqNode(this.containerId);
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	    if (!this.domtable) {
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		this._makecal();
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	    }
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	    container.empty().append(this.domtable);
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	    toggleVisibility(container);
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	    this.visible = true;
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	}
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    }
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    this.hide = function(event) {
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	var self;
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	if (event) {
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	    self = event.data.self;
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	} else {
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	    self = this;
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	}
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	if (self.visible) {
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	    toggleVisibility(self.containerId);
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	    self.visible = false;
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	}
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    }
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    this.toggle = function() {
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	if (this.visible) {
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	    this.hide();
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	}
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	else {
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	    this.show();
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	}
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    }
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    // call hide() when the user explicitly sets the focus on the matching input
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    jqNode(inputId).bind('focus', {'self': this}, this.hide); // connect(inputId, 'onfocus', this, 'hide');
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};
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// keep track of each calendar created
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Calendar.REGISTRY = {};
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/*
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 * popup / hide calendar associated to `containerId`
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 */	    
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function toggleCalendar(containerId, inputId, year, month) {
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    var cal = Calendar.REGISTRY[containerId];
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    if (!cal) {
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	cal = new Calendar(containerId, inputId, year, month);
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	Calendar.REGISTRY[containerId] = cal;
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    }
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    /* hide other calendars */
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    for (containerId in Calendar.REGISTRY) {
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	var othercal = Calendar.REGISTRY[containerId];
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	if (othercal !== cal) {
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	    othercal.hide();
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	}
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    }
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    cal.toggle();
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}
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/*
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 * ask for next month to calendar displayed in `containerId`
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 */
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function toggleNextMonth(containerId) {
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    var cal = Calendar.REGISTRY[containerId];
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    cal.displayNextMonth();
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}
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/*
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 * ask for previous month to calendar displayed in `containerId`
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 */
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function togglePreviousMonth(containerId) {
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   224
    var cal = Calendar.REGISTRY[containerId];
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    cal.displayPreviousMonth();
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}
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/*
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 * Callback called when the user clicked on a cell in the popup calendar
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 */
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function dateSelected(cell, containerId) {
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   233
    var cal = Calendar.REGISTRY[containerId];
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   234
    var input = getNode(cal.inputId);
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   235
    // XXX: the use of innerHTML might cause problems, but it seems to be
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   236
    //      the only way understood by both IE and Mozilla. Otherwise,
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   237
    //      IE accepts innerText and mozilla accepts textContent
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   238
    var selectedDate = new Date(cal.year, cal.month, cell.innerHTML, 12);
1419
7ff24154351d javascript + json refactoring
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diff changeset
   239
    var xxx = remoteExec("format_date", toISOTimestamp(selectedDate));
0
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   240
    input.value = xxx;
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   241
    cal.hide();
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   242
}
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   243
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function whichElement(e)
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{
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   246
var targ;
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   247
if (!e)
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   248
  {
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   249
  var e=window.event;
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   250
  }
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   251
if (e.target)
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   252
  {
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   253
  targ=e.target;
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   254
  }
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   255
else if (e.srcElement)
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   256
  {
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   257
  targ=e.srcElement;
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   258
  }
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   259
if (targ.nodeType==3) // defeat Safari bug
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  {
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   261
  targ = targ.parentNode;
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   262
  }
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   263
  return targ;
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   264
}
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function getPosition(element) {
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  var left;
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  var top;
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  var offset;
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  // TODO: deal scrollbar positions also!
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  left = element.offsetLeft;
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  top = element.offsetTop;
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  if (element.offsetParent != null)
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    {
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      offset = getPosition(element.offsetParent);
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      left = left + offset[0];
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      top = top + offset[1];
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    }
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  return [left, top];
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}
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function getMouseInBlock(event) {
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  var elt = event.target;
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  var x = event.clientX;
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  var y = event.clientY;
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  var w = elt.clientWidth;
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  var h = elt.clientHeight;
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  var offset = getPosition(elt);
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  x = 1.0*(x-offset[0])/w;
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  y = 1.0*(y-offset[1])/h;
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  return [x, y];
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}
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function getHourFromMouse(event, hmin, hmax) {
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  var pos = getMouseInBlock(event);
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  var y = pos[1];
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  return Math.floor((hmax-hmin)*y + hmin);
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}
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function addCalendarItem(event, hmin, hmax, year, month, day, duration, baseurl) {
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  var hour = getHourFromMouse(event, hmin, hmax);
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  if (0<=hour && hour < 24) {
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    baseurl += "&start="+year+"%2F"+month+"%2F"+day+"%20"+hour+":00";
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    baseurl += "&stop="+year+"%2F"+month+"%2F"+day+"%20"+(hour+duration)+":00";
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    stopPropagation(event);
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    window.location.assign(baseurl);
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    return false;
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  }
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  return true;
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}
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function stopPropagation(event) {
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  event.cancelBubble = true;
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  if (event.stopPropagation) event.stopPropagation();  
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}
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CubicWeb.provide('calendar.js');