calendar_date_select.js

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/*
* All portions Copyright (c) 2007 Tim Harper
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
// CalendarDateSelect version 1.10.2 - a prototype based date picker
// Questions, comments, bugs? - email the Author - Tim Harper <"[e-mail]".gsub("see", "c")> 
if (typeof Prototype == 'undefined') alert("CalendarDateSelect Error: Prototype could not be found. Please make sure that your application's layout includes prototype.js (.g. <%= javascript_include_tag :defaults %>) *before* it includes calendar_date_select.js (.g. <%= calendar_date_select_includes %>).");
if (Prototype.Version < "1.6") alert("Prototype 1.6.0 is required.  If using earlier version of prototype, please use calendar_date_select version 1.8.3");

Element.addMethods({
  purgeChildren: function(element) { $A(element.childNodes).each(function(e){$(e).remove();}); },
  build: function(element, type, options, style) {
    var newElement = Element.build(type, options, style);
    element.appendChild(newElement);
    return newElement;
  }
});

Element.build = function(type, options, style)
{
  var e = $(document.createElement(type));
  $H(options).each(function(pair) { eval("e." + pair.key + " = pair.value" ); });
  if (style) 
    $H(style).each(function(pair) { eval("e.style." + pair.key + " = pair.value" ); });
  return e;
};
nil = null;

Date.one_day = 24*60*60*1000;
Date.weekdays = $w("S M T W T F S");
Date.first_day_of_week = 0;
Date.months = $w("January February March April May June July August September October November December" );
Date.padded2 = function(hour) { var padded2 = parseInt(hour, 10); if (hour < 10) padded2 = "0" + padded2; return padded2; }
Date.prototype.getPaddedMinutes = function() { return Date.padded2(this.getMinutes()); }
Date.prototype.getAMPMHour = function() { var hour = this.getHours(); return (hour == 0) ? 12 : (hour > 12 ? hour - 12 : hour ) }
Date.prototype.getAMPM = function() { return (this.getHours() < 12) ? "AM" : "PM"; }
Date.prototype.stripTime = function() { return new Date(this.getFullYear(), this.getMonth(), this.getDate());};
Date.prototype.daysDistance = function(compare_date) { return Math.round((compare_date - this) / Date.one_day); };
Date.prototype.toFormattedString = function(include_time){
  var hour, str;
  str = Date.months[this.getMonth()] + " " + this.getDate() + ", " + this.getFullYear();
  
  if (include_time) { hour = this.getHours(); str += " " + this.getAMPMHour() + ":" + this.getPaddedMinutes() + " " + this.getAMPM() }
  return str;
}
Date.parseFormattedString = function(string) { return new Date(string);}
Math.floor_to_interval = function(n, i) { return Math.floor(n/i) * i;}
window.f_height = function() { return( [window.innerHeight ? window.innerHeight : null, document.documentElement ? document.documentElement.clientHeight : null, document.body ? document.body.clientHeight : null].select(function(x){return x>0}).first()||0); }
window.f_scrollTop = function() { return ([window.pageYOffset ? window.pageYOffset : null, document.documentElement ? document.documentElement.scrollTop : null, document.body ? document.body.scrollTop : null].select(function(x){return x>0}).first()||0 ); }

_translations = {
  "OK": "OK",
  "Now": "Now",
  "Today": "Today"
}
SelectBox = Class.create();
SelectBox.prototype = {
  initialize: function(parent_element, values, html_options, style_options) {
    this.element = $(parent_element).build("select", html_options, style_options);
    this.populate(values);
  },
  populate: function(values) {
    this.element.purgeChildren();
    var that = this; $A(values).each(function(pair) { if (typeof(pair)!="object") {pair = [pair, pair]}; that.element.build("option", { value: pair[1], innerHTML: pair[0]}) });
  },
  setValue: function(value) {
    var e = this.element;
    var matched = false;
    $R(0, e.options.length - 1 ).each(function(i) { if(e.options[i].value==value.toString()) {e.selectedIndex = i; matched = true;}; } );
    return matched;
  },
  getValue: function() { return $F(this.element)}
}
CalendarDateSelect = Class.create();
CalendarDateSelect.prototype = {
  initialize: function(target_element, options) {
    this.target_element = $(target_element); // make sure it's an element, not a string
    if (!this.target_element) { alert("Target element " + target_element + " not found!"); return false;}
    if (this.target_element.tagName != "INPUT") this.target_element = this.target_element.down("INPUT")
    
    this.target_element.calendar_date_select = this;
    this.last_click_at = 0;
    // initialize the date control
    this.options = $H({
      embedded: false,
      popup: nil,
      time: false,
      buttons: true,
      year_range: 10,
      close_on_click: nil,
      minute_interval: 5,
      popup_by: this.target_element,
      month_year: "dropdowns",
      onchange: this.target_element.onchange,
      valid_date_check: nil
    }).merge(options || {});
    this.use_time = this.options.get("time");
    this.parseDate();
    this.callback("before_show")
    this.initCalendarDiv();
    if(!this.options.get("embedded")) {
      this.positionCalendarDiv()
      // set the click handler to check if a user has clicked away from the document
      Event.observe(document, "mousedown", this.closeIfClickedOut_handler = this.closeIfClickedOut.bindAsEventListener(this));
      Event.observe(document, "keypress", this.keyPress_handler = this.keyPress.bindAsEventListener(this));
    }
    this.callback("after_show")
  },
  positionCalendarDiv: function() {
    var above = false;
    var c_pos = this.calendar_div.cumulativeOffset(), c_left = c_pos[0], c_top = c_pos[1], c_dim = this.calendar_div.getDimensions(), c_height = c_dim.height, c_width = c_dim.width; 
    var w_top = window.f_scrollTop(), w_height = window.f_height();
    var e_dim = $(this.options.get("popup_by")).cumulativeOffset(), e_top = e_dim[1], e_left = e_dim[0], e_height = $(this.options.get("popup_by")).getDimensions().height, e_bottom = e_top + e_height;
    
    if ( (( e_bottom + c_height ) > (w_top + w_height)) && ( e_bottom - c_height > w_top )) above = true;
    var left_px = e_left.toString() + "px", top_px = (above ? (e_top - c_height ) : ( e_top + e_height )).toString() + "px";
    
    this.calendar_div.style.left = left_px;  this.calendar_div.style.top = top_px;
    
    this.calendar_div.setStyle({visibility:""});
    
    // draw an iframe behind the calendar -- ugly hack to make IE 6 happy
    if(navigator.appName=="Microsoft Internet Explorer") this.iframe = $(document.body).build("iframe", {src: "javascript:false", className: "ie6_blocker"}, { left: left_px, top: top_px, height: c_height.toString()+"px", width: c_width.toString()+"px", border: "0px"})
  },
  initCalendarDiv: function() {
    if (this.options.get("embedded")) {
      var parent = this.target_element.parentNode;
      var style = {}
    } else {
      var parent = document.body
      var style = { position:"absolute", visibility: "hidden", left:0, top:0 }
    }
    this.calendar_div = $(parent).build('div', {className: "calendar_date_select"}, style);
    
    var that = this;
    // create the divs
    $w("top header body buttons footer bottom").each(function(name) {
      eval("var " + name + "_div = that." + name + "_div = that.calendar_div.build('div', { className: 'cds_"+name+"' }, { clear: 'left'} ); ");
    });
    
    this.initHeaderDiv();
    this.initButtonsDiv();
    this.initCalendarGrid();
    this.updateFooter("&#160;");
    
    this.refresh();
    this.setUseTime(this.use_time);
  },
  initHeaderDiv: function() {
    var header_div = this.header_div;
    this.close_button = header_div.build("a", { innerHTML: "x", href:"#", onclick:function () { this.close(); return false; }.bindAsEventListener(this), className: "close" });
    this.next_month_button = header_div.build("a", { innerHTML: "&gt;", href:"#", onclick:function () { this.navMonth(this.date.getMonth() + 1 ); return false; }.bindAsEventListener(this), className: "next" });
    this.prev_month_button = header_div.build("a", { innerHTML: "&lt;", href:"#", onclick:function () { this.navMonth(this.date.getMonth() - 1 ); return false; }.bindAsEventListener(this), className: "prev" });
    
    if (this.options.get("month_year")=="dropdowns") {
      this.month_select = new SelectBox(header_div, $R(0,11).map(function(m){return [Date.months[m], m]}), {className: "month", onchange: function () { this.navMonth(this.month_select.getValue()) }.bindAsEventListener(this)}); 
      this.year_select = new SelectBox(header_div, [], {className: "year", onchange: function () { this.navYear(this.year_select.getValue()) }.bindAsEventListener(this)}); 
      this.populateYearRange();
    } else {
      this.month_year_label = header_div.build("span")
    }
  },
  initCalendarGrid: function() {
    var body_div = this.body_div;
    this.calendar_day_grid = [];
    var days_table = body_div.build("table", { cellPadding: "0px", cellSpacing: "0px", width: "100%" })
    // make the weekdays!
    var weekdays_row = days_table.build("thead").build("tr");
    Date.weekdays.each( function(weekday) { 
      weekdays_row.build("th", {innerHTML: weekday});
    });
    
    var days_tbody = days_table.build("tbody")
    // Make the days!
    var row_number = 0, weekday;
    for(var cell_index = 0; cell_index<42; cell_index++)
    {
      weekday = (cell_index+Date.first_day_of_week ) % 7;
      if ( cell_index % 7==0 ) days_row = days_tbody.build("tr", {className: 'row_'+row_number++});
      (this.calendar_day_grid[cell_index] = days_row.build("td", {
          calendar_date_select: this,
          onmouseover: function () { this.calendar_date_select.dayHover(this); },
          onmouseout: function () { this.calendar_date_select.dayHoverOut(this) },
          onclick: function() { this.calendar_date_select.updateSelectedDate(this, true); },
          className: (weekday==0) || (weekday==6) ? " weekend" : "" //clear the class
        },
        { cursor: "pointer" }
      )).build("div");
      this.calendar_day_grid[cell_index];
    }
  },
  initButtonsDiv: function()
  {
    var buttons_div = this.buttons_div;
    if (this.options.get("time"))
    {
      var blank_time = $A(this.options.get("time")=="mixed" ? [[" - ", ""]] : []);
      buttons_div.build("span", {innerHTML:"@", className: "at_sign"});
      
      var t = new Date();
      this.hour_select = new SelectBox(buttons_div,
        blank_time.concat($R(0,23).map(function(x) {t.setHours(x); return $A([t.getAMPMHour()+ " " + t.getAMPM(),x])} )),
        { 
          calendar_date_select: this, 
          onchange: function() { this.calendar_date_select.updateSelectedDate( { hour: this.value });},
          className: "hour" 
        }
      );