src/cm/media/js/lib/flexible-js-formatting/dates/datechooser.js
changeset 0 40c8f766c9b8
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cm/media/js/lib/flexible-js-formatting/dates/datechooser.js	Mon Nov 23 15:14:29 2009 +0100
@@ -0,0 +1,267 @@
+/*
+ * Copyright (C) 2004 Baron Schwartz <baron at sequent dot org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, version 2.1.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
+ * details.
+ *
+ * $Revision: 1.1 $
+ */
+
+// Shows or hides the date chooser on the page
+function showChooser(obj, inputId, divId, start, end, format, isTimeChooser) {
+    if (document.getElementById) {
+        var input = document.getElementById(inputId);
+        var div = document.getElementById(divId);
+        if (input !== undefined && div !== undefined) {
+            if (input.DateChooser === undefined) {
+                input.DateChooser = new DateChooser(input, div, start, end, format, isTimeChooser);
+            }
+            input.DateChooser.setDate(Date.parseDate(input.value, format));
+            if (input.DateChooser.isVisible()) {
+                input.DateChooser.hide();
+            }
+            else {
+                input.DateChooser.show();
+            }
+        }
+    }
+}
+
+// Sets a date on the object attached to 'inputId'
+function dateChooserSetDate(inputId, value) {
+    var input = document.getElementById(inputId);
+    if (input !== undefined && input.DateChooser !== undefined) {
+        input.DateChooser.setDate(Date.parseDate(value, input.DateChooser._format));
+        if (input.DateChooser.isTimeChooser()) {
+            var theForm = input.form;
+            var prefix = input.DateChooser._prefix;
+            input.DateChooser.setTime(
+                parseInt(theForm.elements[prefix + 'hour'].options[
+                    theForm.elements[prefix + 'hour'].selectedIndex].value)
+                    + parseInt(theForm.elements[prefix + 'ampm'].options[
+                    theForm.elements[prefix + 'ampm'].selectedIndex].value),
+                parseInt(theForm.elements[prefix + 'min'].options[
+                    theForm.elements[prefix + 'min'].selectedIndex].value));
+        }
+        input.value = input.DateChooser.getValue();
+        input.DateChooser.hide();
+    }
+}
+
+// The callback function for when someone changes the pulldown menus on the date
+// chooser
+function dateChooserDateChange(theForm, prefix) {
+    var input = document.getElementById(
+        theForm.elements[prefix + 'inputId'].value);
+    var newDate = new Date(
+        theForm.elements[prefix + 'year'].options[
+            theForm.elements[prefix + 'year'].selectedIndex].value,
+        theForm.elements[prefix + 'month'].options[
+            theForm.elements[prefix + 'month'].selectedIndex].value,
+        1);
+    // Try to preserve the day of month (watch out for months with 31 days)
+    newDate.setDate(Math.max(1, Math.min(newDate.getDaysInMonth(),
+                    input.DateChooser._date.getDate())));
+    input.DateChooser.setDate(newDate);
+    if (input.DateChooser.isTimeChooser()) {
+        input.DateChooser.setTime(
+            parseInt(theForm.elements[prefix + 'hour'].options[
+                theForm.elements[prefix + 'hour'].selectedIndex].value)
+                + parseInt(theForm.elements[prefix + 'ampm'].options[
+                theForm.elements[prefix + 'ampm'].selectedIndex].value),
+            parseInt(theForm.elements[prefix + 'min'].options[
+                theForm.elements[prefix + 'min'].selectedIndex].value));
+    }
+    input.DateChooser.show();
+}
+
+// Gets the absolute position on the page of the element passed in
+function getAbsolutePosition(obj) {
+    var result = [0, 0];
+    while (obj != null) {
+        result[0] += obj.offsetTop;
+        result[1] += obj.offsetLeft;
+        obj = obj.offsetParent;
+    }
+    return result;
+}
+
+// DateChooser constructor
+function DateChooser(input, div, start, end, format, isTimeChooser) {
+    this._input = input;
+    this._div = div;
+    this._start = start;
+    this._end = end;
+    this._format = format;
+    this._date = new Date();
+    this._isTimeChooser = isTimeChooser;
+    // Choose a random prefix for all pulldown menus
+    this._prefix = "";
+    var letters = ["a", "b", "c", "d", "e", "f", "h", "i", "j", "k", "l",
+        "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"];
+    for (var i = 0; i < 10; ++i) {
+        this._prefix += letters[Math.floor(Math.random() * letters.length)];
+    }
+}
+
+// DateChooser prototype variables
+DateChooser.prototype._isVisible = false;
+
+// Returns true if the chooser is currently visible
+DateChooser.prototype.isVisible = function() {
+    return this._isVisible;
+}
+
+// Returns true if the chooser is to allow choosing the time as well as the date
+DateChooser.prototype.isTimeChooser = function() {
+    return this._isTimeChooser;
+}
+
+// Gets the value, as a formatted string, of the date attached to the chooser
+DateChooser.prototype.getValue = function() {
+    return this._date.dateFormat(this._format);
+}
+
+// Hides the chooser
+DateChooser.prototype.hide = function() {
+    this._div.style.visibility = "hidden";
+    this._div.style.display = "none";
+    this._div.innerHTML = "";
+    this._isVisible = false;
+}
+
+// Shows the chooser on the page
+DateChooser.prototype.show = function() {
+    // calculate the position before making it visible
+    var inputPos = getAbsolutePosition(this._input);
+    this._div.style.top = (inputPos[0] + this._input.offsetHeight) + "px";
+    this._div.style.left = (inputPos[1] + this._input.offsetWidth) + "px";
+    this._div.innerHTML = this.createChooserHtml();
+    this._div.style.display = "block";
+    this._div.style.visibility = "visible";
+    this._div.style.position = "absolute";
+    this._isVisible = true;
+}
+
+// Sets the date to what is in the input box
+DateChooser.prototype.initializeDate = function() {
+    if (this._input.value != null && this._input.value != "") {
+        this._date = Date.parseDate(this._input.value, this._format);
+    }
+    else {
+        this._date = new Date();
+    }
+}
+
+// Sets the date attached to the chooser
+DateChooser.prototype.setDate = function(date) {
+    this._date = date ? date : new Date();
+}
+
+// Sets the time portion of the date attached to the chooser
+DateChooser.prototype.setTime = function(hour, minute) {
+    this._date.setHours(hour);
+    this._date.setMinutes(minute);
+}
+
+// Creates the HTML for the whole chooser
+DateChooser.prototype.createChooserHtml = function() {
+    var formHtml = "<input type=\"hidden\" name=\""
+        + this._prefix + "inputId\" value=\""
+        + this._input.getAttribute('id') + "\">"
+        + "\r\n  <select name=\"" + this._prefix 
+        + "month\" onChange=\"dateChooserDateChange(this.form, '"
+        + this._prefix + "');\">";
+    for (var monIndex = 0; monIndex <= 11; monIndex++) {
+        formHtml += "\r\n    <option value=\"" + monIndex + "\""
+            + (monIndex == this._date.getMonth() ? " selected=\"1\"" : "")
+            + ">" + Date.monthNames[monIndex] + "</option>";
+    }
+    formHtml += "\r\n  </select>\r\n  <select name=\""
+        + this._prefix + "year\" onChange=\"dateChooserDateChange(this.form, '"
+        + this._prefix + "');\">";
+    for (var i = this._start; i <= this._end; ++i) {
+        formHtml += "\r\n    <option value=\"" + i + "\""
+            + (i == this._date.getFullYear() ? " selected=\"1\"" : "")
+            + ">" + i + "</option>";
+    }
+    formHtml += "\r\n  </select>";
+    formHtml += this.createCalendarHtml();
+    if (this._isTimeChooser) {
+        formHtml += this.createTimeChooserHtml();
+    }
+    return formHtml;
+}
+
+// Creates the extra HTML needed for choosing the time
+DateChooser.prototype.createTimeChooserHtml = function() {
+    // Add hours
+    var result = "\r\n  <select name=\"" + this._prefix + "hour\">";
+    for (var i = 0; i < 12; ++i) {
+        result += "\r\n    <option value=\"" + i + "\""
+            + (((this._date.getHours() % 12) == i) ? " selected=\"1\">" : ">")
+            + i + "</option>";
+    }
+    // Add extra entry for 12:00
+    result += "\r\n    <option value=\"0\">12</option>";
+    result += "\r\n  </select>";
+    // Add minutes
+    result += "\r\n  <select name=\"" + this._prefix + "min\">";
+    for (var i = 0; i < 60; i += 15) {
+        result += "\r\n    <option value=\"" + i + "\""
+            + ((this._date.getMinutes() == i) ? " selected=\"1\">" : ">")
+            + String.leftPad(i, 2, '0') + "</option>";
+    }
+    result += "\r\n  </select>";
+    // Add AM/PM
+    result += "\r\n  <select name=\"" + this._prefix + "ampm\">";
+    result += "\r\n    <option value=\"0\""
+        + (this._date.getHours() < 12 ? " selected=\"1\">" : ">")
+        + "AM</option>";
+    result += "\r\n    <option value=\"12\""
+        + (this._date.getHours() >= 12 ? " selected=\"1\">" : ">")
+        + "PM</option>";
+    result += "\r\n  </select>";
+    return result;
+}
+
+// Creates the HTML for the actual calendar part of the chooser
+DateChooser.prototype.createCalendarHtml = function() {
+    var result = "\r\n<table cellspacing=\"0\" class=\"dateChooser\">"
+        + "\r\n  <tr><th>S</th><th>M</th><th>T</th>"
+        + "<th>W</th><th>T</th><th>F</th><th>S</th></tr>\r\n  <tr>";
+    // Fill up the days of the week until we get to the first day of the month
+    var firstDay = this._date.getFirstDayOfMonth();
+    var lastDay = this._date.getLastDayOfMonth();
+    if (firstDay != 0) {
+        result += "<td colspan=\"" + firstDay + "\">&nbsp;</td>";
+    }
+    // Fill in the days of the month
+    var i = 0;
+    while (i < this._date.getDaysInMonth()) {
+        if (((i++ + firstDay) % 7) == 0) {
+            result += "</tr>\r\n  <tr>";
+        }
+        var thisDay = new Date(
+            this._date.getFullYear(),
+            this._date.getMonth(), i);
+        var js = '"dateChooserSetDate(\''
+            + this._input.getAttribute('id') + "', '"
+            + thisDay.dateFormat(this._format) + '\');"'
+        result += "\r\n    <td class=\"dateChooserActive"
+            // If the date is the currently chosen date, highlight it
+            + (i == this._date.getDate() ? " dateChooserActiveToday" : "")
+            + "\" onClick=" + js + ">" + i + "</td>";
+    }
+    // Fill in any days after the end of the month
+    if (lastDay != 6) {
+        result += "<td colspan=\"" + (6 - lastDay) + "\">&nbsp;</td>";
+    }
+    return result + "\r\n  </tr>\r\n</table><!--[if lte IE 6.5]><iframe></iframe><![endif]-->";
+}