library/dynarch_calendar_setup.js

   1 /*  Copyright Mihai Bazon, 2002, 2003  |  http://dynarch.com/mishoo/
   2  * ---------------------------------------------------------------------------
   3  *
   4  * The DHTML Calendar
   5  *
   6  * Details and latest version at:
   7  * http://dynarch.com/mishoo/calendar.epl
   8  *
   9  * This script is distributed under the GNU Lesser General Public License.
  10  * Read the entire license text here: http://www.gnu.org/licenses/lgpl.html
  11  *
  12  * This file defines helper functions for setting up the calendar.  They are
  13  * intended to help non-programmers get a working calendar on their site
  14  * quickly.  This script should not be seen as part of the calendar.  It just
  15  * shows you what one can do with the calendar, while in the same time
  16  * providing a quick and simple method for setting it up.  If you need
  17  * exhaustive customization of the calendar creation process feel free to
  18  * modify this code to suit your needs (this is recommended and much better
  19  * than modifying calendar.js itself).
  20  */
  21
  22 // $Id$
  23
  24 /**
  25  *  This function "patches" an input field (or other element) to use a calendar
  26  *  widget for date selection.
  27  *
  28  *  The "params" is a single object that can have the following properties:
  29  *
  30  *    prop. name   | description
  31  *  -------------------------------------------------------------------------------------------------
  32  *   inputField    | the ID of an input field to store the date
  33  *   displayArea   | the ID of a DIV or other element to show the date
  34  *   button        | ID of a button or other element that will trigger the calendar
  35  *   eventName     | event that will trigger the calendar, without the "on" prefix (default: "click")
  36  *   ifFormat      | date format that will be stored in the input field
  37  *   daFormat      | the date format that will be used to display the date in displayArea
  38  *   singleClick   | (true/false) wether the calendar is in single click mode or not (default: true)
  39  *   firstDay      | numeric: 0 to 6.  "0" means display Sunday first, "1" means display Monday first, etc.
  40  *   align         | alignment (default: "Br"); if you don't know what's this see the calendar documentation
  41  *   range         | array with 2 elements.  Default: [1900, 2999] -- the range of years available
  42  *   weekNumbers   | (true/false) if it's true (default) the calendar will display week numbers
  43  *   flat          | null or element ID; if not null the calendar will be a flat calendar having the parent with the given ID
  44  *   flatCallback  | function that receives a JS Date object and returns an URL to point the browser to (for flat calendar)
  45  *   disableFunc   | function that receives a JS Date object and should return true if that date has to be disabled in the calendar
  46  *   onSelect      | function that gets called when a date is selected.  You don't _have_ to supply this (the default is generally okay)
  47  *   onClose       | function that gets called when the calendar is closed.  [default]
  48  *   onUpdate      | function that gets called after the date is updated in the input field.  Receives a reference to the calendar.
  49  *   date          | the date that the calendar will be initially displayed to
  50  *   showsTime     | default: false; if true the calendar will include a time selector
  51  *   timeFormat    | the time format; can be "12" or "24", default is "12"
  52  *   electric      | if true (default) then given fields/date areas are updated for each move; otherwise they're updated only on close
  53  *   step          | configures the step of the years in drop-down boxes; default: 2
  54  *   position      | configures the calendar absolute position; default: null
  55  *   cache         | if "true" (but default: "false") it will reuse the same calendar object, where possible
  56  *   showOthers    | if "true" (but default: "false") it will show days from other months too
  57  *
  58  *  None of them is required, they all have default values.  However, if you
  59  *  pass none of "inputField", "displayArea" or "button" you'll get a warning
  60  *  saying "nothing to setup".
  61  */
  62 Calendar.setup = function (params) {
  63         function param_default(pname, def) { if (typeof params[pname] == "undefined") { params[pname] = def; } };
  64
  65         param_default("inputField",     null);
  66         param_default("displayArea",    null);
  67         param_default("button",         null);
  68         param_default("eventName",      "click");
  69         param_default("ifFormat",       "%Y/%m/%d");
  70         param_default("daFormat",       "%Y/%m/%d");
  71         param_default("singleClick",    true);
  72         param_default("disableFunc",    null);
  73         param_default("dateStatusFunc", params["disableFunc"]); // takes precedence if both are defined
  74         param_default("dateText",       null);
  75         param_default("firstDay",       null);
  76         param_default("align",          "Br");
  77         param_default("range",          [1900, 2999]);
  78         param_default("weekNumbers",    true);
  79         param_default("flat",           null);
  80         param_default("flatCallback",   null);
  81         param_default("onSelect",       null);
  82         param_default("onClose",        null);
  83         param_default("onUpdate",       null);
  84         param_default("date",           null);
  85         param_default("showsTime",      false);
  86         param_default("timeFormat",     "24");
  87         param_default("electric",       true);
  88         param_default("step",           2);
  89         param_default("position",       null);
  90         param_default("cache",          false);
  91         param_default("showOthers",     false);
  92         param_default("multiple",       null);
  93
  94         var tmp = ["inputField", "displayArea", "button"];
  95         for (var i in tmp) {
  96                 if (typeof params[tmp[i]] == "string") {
  97                         params[tmp[i]] = document.getElementById(params[tmp[i]]);
  98                 }
  99         }
 100         if (!(params.flat || params.multiple || params.inputField || params.displayArea || params.button)) {
 101                 alert("Calendar.setup:\n  Nothing to setup (no fields found).  Please check your code");
 102                 return false;
 103         }
 104
 105         function onSelect(cal) {
 106                 var p = cal.params;
 107                 var update = (cal.dateClicked || p.electric);
 108                 if (update && p.inputField) {
 109                         p.inputField.value = cal.date.print(p.ifFormat);
 110                         if (typeof p.inputField.onchange == "function")
 111                                 p.inputField.onchange();
 112                 }
 113                 if (update && p.displayArea)
 114                         p.displayArea.innerHTML = cal.date.print(p.daFormat);
 115                 if (update && typeof p.onUpdate == "function")
 116                         p.onUpdate(cal);
 117                 if (update && p.flat) {
 118                         if (typeof p.flatCallback == "function")
 119                                 p.flatCallback(cal);
 120                 }
 121                 if (update && p.singleClick && cal.dateClicked)
 122                         cal.callCloseHandler();
 123         };
 124
 125         if (params.flat != null) {
 126                 if (typeof params.flat == "string")
 127                         params.flat = document.getElementById(params.flat);
 128                 if (!params.flat) {
 129                         alert("Calendar.setup:\n  Flat specified but can't find parent.");
 130                         return false;
 131                 }
 132                 var cal = new Calendar(params.firstDay, params.date, params.onSelect || onSelect);
 133                 cal.showsOtherMonths = params.showOthers;
 134                 cal.showsTime = params.showsTime;
 135                 cal.time24 = (params.timeFormat == "24");
 136                 cal.params = params;
 137                 cal.weekNumbers = params.weekNumbers;
 138                 cal.setRange(params.range[0], params.range[1]);
 139                 cal.setDateStatusHandler(params.dateStatusFunc);
 140                 cal.getDateText = params.dateText;
 141                 if (params.ifFormat) {
 142                         cal.setDateFormat(params.ifFormat);
 143                 }
 144                 if (params.inputField && typeof params.inputField.value == "string") {
 145                         cal.parseDate(params.inputField.value);
 146                 }
 147                 cal.create(params.flat);
 148                 cal.show();
 149                 return cal; // was "return false;" (fix from Nethanel Vilensky for OpenEMR)
 150         }
 151
 152         var triggerEl = params.button || params.displayArea || params.inputField;
 153         triggerEl["on" + params.eventName] = function() {
 154                 var dateEl = params.inputField || params.displayArea;
 155                 var dateFmt = params.inputField ? params.ifFormat : params.daFormat;
 156                 var mustCreate = false;
 157                 var cal = window.calendar;
 158                 if (dateEl)
 159                         params.date = Date.parseDate(dateEl.value || dateEl.innerHTML, dateFmt);
 160                 if (!(cal && params.cache)) {
 161                         window.calendar = cal = new Calendar(params.firstDay,
 162                                                              params.date,
 163                                                              params.onSelect || onSelect,
 164                                                              params.onClose || function(cal) { cal.hide(); });
 165                         cal.showsTime = params.showsTime;
 166                         cal.time24 = (params.timeFormat == "24");
 167                         cal.weekNumbers = params.weekNumbers;
 168                         mustCreate = true;
 169                 } else {
 170                         if (params.date)
 171                                 cal.setDate(params.date);
 172                         cal.hide();
 173                 }
 174                 if (params.multiple) {
 175                         cal.multiple = {};
 176                         for (var i = params.multiple.length; --i >= 0;) {
 177                                 var d = params.multiple[i];
 178                                 var ds = d.print("%Y%m%d");
 179                                 cal.multiple[ds] = d;
 180                         }
 181                 }
 182                 cal.showsOtherMonths = params.showOthers;
 183                 cal.yearStep = params.step;
 184                 cal.setRange(params.range[0], params.range[1]);
 185                 cal.params = params;
 186                 cal.setDateStatusHandler(params.dateStatusFunc);
 187                 cal.getDateText = params.dateText;
 188                 cal.setDateFormat(dateFmt);
 189                 if (mustCreate)
 190                         cal.create();
 191                 cal.refresh();
 192                 if (!params.position)
 193                         cal.showAtElement(params.button || params.displayArea || params.inputField, params.align);
 194                 else
 195                         cal.showAt(params.position[0], params.position[1]);
 196                 return false;
 197         };
 198
 199         return cal;
 200 };