www.gusucode.com > 74cms PHP骑士人才系统 v3.5.1源码程序 > code/upload/admin/js/jquery.date_input.js
DateInput = (function($) { // Localise the $ function
function DateInput(el, opts) {
if (typeof(opts) != "object") opts = {};
$.extend(this, DateInput.DEFAULT_OPTS, opts);
this.input = $(el);
this.bindMethodsToObj("show", "hide", "hideIfClickOutside", "keydownHandler", "selectDate");
this.build();
this.selectDate();
this.hide();
};
DateInput.DEFAULT_OPTS = {
month_names: ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"],
short_month_names: ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"],
short_day_names: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"],
start_of_week: 1
};
DateInput.prototype = {
build: function() {
var monthNav = $('<p class="month_nav">' +
'<span class="button prev" title="前一月"><<</span>' +
' <span class="month_name"></span> ' +
'<span class="button next" title="后一月">>></span>' +
'</p>');
this.monthNameSpan = $(".month_name", monthNav);
$(".prev", monthNav).click(this.bindToObj(function() { this.moveMonthBy(-1); }));
$(".next", monthNav).click(this.bindToObj(function() { this.moveMonthBy(1); }));
var yearNav = $('<p class="year_nav">' +
'<span class="button prev" title="前一年"><<</span>' +
' <span class="year_name"></span> ' +
'<span class="button next" title="后一年">>></span>' +
'</p>');
this.yearNameSpan = $(".year_name", yearNav);
$(".prev", yearNav).click(this.bindToObj(function() { this.moveMonthBy(-12); }));
$(".next", yearNav).click(this.bindToObj(function() { this.moveMonthBy(12); }));
var nav = $('<div class="nav"></div>').append(monthNav, yearNav);
var tableShell = "<table><thead><tr>";
$(this.adjustDays(this.short_day_names)).each(function() {
tableShell += "<th>" + this + "</th>";
});
tableShell += "</tr></thead><tbody></tbody></table>";
this.dateSelector = this.rootLayers = $('<div class="date_selector"></div>').append(nav, tableShell).insertAfter(this.input);
if ($.browser.msie && $.browser.version < 7) {
// The ieframe is a hack which works around an IE <= 6 bug where absolutely positioned elements
// appear behind select boxes. Putting an iframe over the top of the select box prevents this.
this.ieframe = $('<iframe class="date_selector_ieframe" frameborder="0" src="#"></iframe>').insertBefore(this.dateSelector);
this.rootLayers = this.rootLayers.add(this.ieframe);
// IE 6 only does :hover on A elements
$(".button", nav).mouseover(function() { $(this).addClass("hover") });
$(".button", nav).mouseout(function() { $(this).removeClass("hover") });
};
this.tbody = $("tbody", this.dateSelector);
this.input.change(this.bindToObj(function() { this.selectDate(); }));
this.selectDate();
},
selectMonth: function(date) {
var newMonth = new Date(date.getFullYear(), date.getMonth(), 1);
if (!this.currentMonth || !(this.currentMonth.getFullYear() == newMonth.getFullYear() &&
this.currentMonth.getMonth() == newMonth.getMonth())) {
// We have moved to a different month and so need to re-draw the table
this.currentMonth = newMonth;
// Work out the range of days we will draw
var rangeStart = this.rangeStart(date), rangeEnd = this.rangeEnd(date);
var numDays = this.daysBetween(rangeStart, rangeEnd);
var dayCells = "";
// Draw each of the days
for (var i = 0; i <= numDays; i++) {
var currentDay = new Date(rangeStart.getFullYear(), rangeStart.getMonth(), rangeStart.getDate() + i, 12, 00);
if (this.isFirstDayOfWeek(currentDay)) dayCells += "<tr>";
if (currentDay.getMonth() == date.getMonth()) {
dayCells += '<td class="selectable_day" date="' + this.dateToString(currentDay) + '">' + currentDay.getDate() + '</td>';
} else {
dayCells += '<td class="unselected_month" date="' + this.dateToString(currentDay) + '">' + currentDay.getDate() + '</td>';
};
if (this.isLastDayOfWeek(currentDay)) dayCells += "</tr>";
};
this.tbody.empty().append(dayCells);
// Write the month and year in the header
this.monthNameSpan.empty().append(this.monthName(date));
this.yearNameSpan.empty().append(this.currentMonth.getFullYear());
$(".selectable_day", this.tbody).click(this.bindToObj(function(event) {
this.changeInput($(event.target).attr("date"));
}));
$("td[date=" + this.dateToString(new Date()) + "]", this.tbody).addClass("today");
$("td.selectable_day", this.tbody).mouseover(function() { $(this).addClass("hover") });
$("td.selectable_day", this.tbody).mouseout(function() { $(this).removeClass("hover") });
};
$('.selected', this.tbody).removeClass("selected");
$('td[date=' + this.selectedDateString + ']', this.tbody).addClass("selected");
},
// Select a particular date. If the date is not specified it is read from the input. If no date is
// found then the current date is selected. The selectMonth() function is responsible for actually
// selecting a particular date.
selectDate: function(date) {
if (typeof(date) == "undefined") {
date = this.stringToDate(this.input.val());
};
if (!date) date = new Date();
this.selectedDate = date;
this.selectedDateString = this.dateToString(this.selectedDate);
this.selectMonth(this.selectedDate);
},
// Write a date string to the input and hide. Trigger the change event so we know to update the
// selectedDate.
changeInput: function(dateString) {
this.input.val(dateString).change();
this.hide();
},
show: function() {
this.rootLayers.css("display", "block");
$([window, document.body]).click(this.hideIfClickOutside);
this.input.unbind("focus", this.show);
$(document.body).keydown(this.keydownHandler);
this.setPosition();
},
hide: function() {
this.rootLayers.css("display", "none");
$([window, document.body]).unbind("click", this.hideIfClickOutside);
this.input.focus(this.show);
$(document.body).unbind("keydown", this.keydownHandler);
},
// We should hide the date selector if a click event happens outside of it
hideIfClickOutside: function(event) {
if (event.target != this.input[0] && !this.insideSelector(event)) {
this.hide();
};
},
// Returns true if the given event occurred inside the date selector
insideSelector: function(event) {
var offset = this.dateSelector.position();
offset.right = offset.left + this.dateSelector.outerWidth();
offset.bottom = offset.top + this.dateSelector.outerHeight();
return event.pageY < offset.bottom &&
event.pageY > offset.top &&
event.pageX < offset.right &&
event.pageX > offset.left;
},
// Respond to various different keyboard events
keydownHandler: function(event) {
switch (event.keyCode)
{
case 9: // tab
case 27: // esc
this.hide();
return;
break;
case 13: // enter
this.changeInput(this.selectedDateString);
break;
case 33: // page up
this.moveDateMonthBy(event.ctrlKey ? -12 : -1);
break;
case 34: // page down
this.moveDateMonthBy(event.ctrlKey ? 12 : 1);
break;
case 38: // up
this.moveDateBy(-7);
break;
case 40: // down
this.moveDateBy(7);
break;
case 37: // left
this.moveDateBy(-1);
break;
case 39: // right
this.moveDateBy(1);
break;
default:
return;
}
event.preventDefault();
},
stringToDate: function(string) {
var matches;
if (matches = string.match(/^(\d{1,2}) ([^\s]+) (\d{4,4})$/)) {
return new Date(matches[3], this.shortMonthNum(matches[2]), matches[1], 12, 00);
} else {
return null;
};
},
dateToString: function(date) {
return date.getDate() + " " + this.short_month_names[date.getMonth()] + " " + date.getFullYear();
},
setPosition: function() {
var offset = this.input.offset();
this.rootLayers.css({
top: offset.top + this.input.outerHeight(),
left: offset.left
});
if (this.ieframe) {
this.ieframe.css({
width: this.dateSelector.outerWidth(),
height: this.dateSelector.outerHeight()
});
};
},
// Move the currently selected date by a particular number of days
moveDateBy: function(amount) {
var newDate = new Date(this.selectedDate.getFullYear(), this.selectedDate.getMonth(), this.selectedDate.getDate() + amount);
this.selectDate(newDate);
},
// Move the month of the currently selected date by a particular number of months. If we are moving
// to a month which does not have enough days to represent the current day-of-month, then we
// default to the last day of the month.
moveDateMonthBy: function(amount) {
var newDate = new Date(this.selectedDate.getFullYear(), this.selectedDate.getMonth() + amount, this.selectedDate.getDate());
if (newDate.getMonth() == this.selectedDate.getMonth() + amount + 1) {
// We have moved too far. For instance 31st March + 1 month = 1st May, not 30th April
newDate.setDate(0);
};
this.selectDate(newDate);
},
// Move the currently displayed month by a certain amount. This does *not* move the currently
// selected date, so we end up viewing a month with no visibly selected date.
moveMonthBy: function(amount) {
var newMonth = new Date(this.currentMonth.getFullYear(), this.currentMonth.getMonth() + amount, this.currentMonth.getDate());
this.selectMonth(newMonth);
},
monthName: function(date) {
return this.month_names[date.getMonth()];
},
// A hack to make "this" refer to this object instance when inside the given function
bindToObj: function(fn) {
var self = this;
return function() { return fn.apply(self, arguments) };
},
// See above
bindMethodsToObj: function() {
for (var i = 0; i < arguments.length; i++) {
this[arguments[i]] = this.bindToObj(this[arguments[i]]);
};
},
// Finds out the array index of a particular value in that array
indexFor: function(array, value) {
for (var i = 0; i < array.length; i++) {
if (value == array[i]) return i;
};
},
// Finds the number of a given month name
monthNum: function(month_name) {
return this.indexFor(this.month_names, month_name);
},
// Finds the number of a given short month name
shortMonthNum: function(month_name) {
return this.indexFor(this.short_month_names, month_name);
},
// Finds the number of a given day name
shortDayNum: function(day_name) {
return this.indexFor(this.short_day_names, day_name);
},
// Works out the number of days between two dates
daysBetween: function(start, end) {
start = Date.UTC(start.getFullYear(), start.getMonth(), start.getDate());
end = Date.UTC(end.getFullYear(), end.getMonth(), end.getDate());
return (end - start) / 86400000;
},
/*
changeDayTo: Given a date, move along the date line in the given direction until we reach the
desired day of week.
The maths is a bit complex, here's an explanation.
Think of a continuous repeating number line like:
.. 5 6 0 1 2 3 4 5 6 0 1 2 3 4 5 6 0 1 ..
We are essentially trying to find the difference between two numbers
on the line in one direction (dictated by the sign of direction variable).
Unfortunately Javascript's modulo operator works such that -5 % 7 = -5,
instead of -5 % 7 = 2, so we need to only work with the positives.
To find the difference between 1 and 4, going backwards, we can treat 1
as (1 + 7) = 8, so the different is |8 - 4| = 4. If we don't cross the
boundary between 0 and 6, for instance to find the backwards difference
between 5 and 2, |(5 + 7) - 2| = |12 - 2| = 10. And 10 % 7 = 3.
Going forwards, to find the difference between 4 and 1, we again treat 1
as (1 + 7) = 8, and the difference is |4 - 8| = 4. If we don't cross the
boundary, the difference between 2 and 5 is |2 - (5 + 7)| = |2 - 12| = 10.
And 10 % 7 = 3.
Once we have the positive difference in either direction represented as a
absolute value, we can multiply it by the direction variable to get the difference
in the desired direction.
We can condense the two methods into a single equation:
backwardsDifference = direction * (|(currentDayNum + 7) - dayOfWeek| % 7)
= direction * (|currentDayNum - dayOfWeek + 7| % 7)
forwardsDifference = direction * (|currentDayNum - (dayOfWeek + 7)| % 7)
= direction * (|currentDayNum - dayOfWeek - 7| % 7)
(The two equations now differ only by the +/- 7)
difference = direction * (|currentDayNum - dayOfWeek - (direction * 7)| % 7)
*/
changeDayTo: function(dayOfWeek, date, direction) {
var difference = direction * (Math.abs(date.getDay() - dayOfWeek - (direction * 7)) % 7);
return new Date(date.getFullYear(), date.getMonth(), date.getDate() + difference);
},
// Given a date, return the day at the start of the week *before* this month
rangeStart: function(date) {
return this.changeDayTo(this.start_of_week, new Date(date.getFullYear(), date.getMonth()), -1);
},
// Given a date, return the day at the end of the week *after* this month
rangeEnd: function(date) {
return this.changeDayTo((this.start_of_week - 1) % 7, new Date(date.getFullYear(), date.getMonth() + 1, 0), 1);
},
// Is the given date the first day of the week?
isFirstDayOfWeek: function(date) {
return date.getDay() == this.start_of_week;
},
// Is the given date the last day of the week?
isLastDayOfWeek: function(date) {
return date.getDay() == (this.start_of_week - 1) % 7;
},
// Adjust a given array of day names to begin with the configured start-of-week
adjustDays: function(days) {
var newDays = [];
for (var i = 0; i < days.length; i++) {
newDays[i] = days[(i + this.start_of_week) % 7];
};
return newDays;
}
};
$.fn.date_input = function(opts) {
return this.each(function() { new DateInput(this, opts); });
};
$.date_input = { initialize: function(opts) {
$("input.date_input").date_input(opts);
} };
return DateInput;
})(jQuery); // End localisation of the $ function
jQuery.extend(DateInput.DEFAULT_OPTS, { month_names: ["一月", "二月", "三月", "四月", "五月", "六月", "七月", "八月", "九月", "十月", "十一月", "十二月"], short_month_names: ["一", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "十二"], short_day_names: [ "日","一", "二", "三", "四", "五", "六"]});
$.extend(DateInput.DEFAULT_OPTS, {
stringToDate: function(string) {
var matches;
if (matches = string.match(/^(\d{4,4})-(\d{2,2})-(\d{2,2})$/)) {
return new Date(matches[1], matches[2] - 1, matches[3]);
} else {
return null;
};
},
dateToString: function(date) {
var month = (date.getMonth() + 1).toString();
var dom = date.getDate().toString();
if (month.length == 1) month = "0" + month;
if (dom.length == 1) dom = "0" + dom;
return date.getFullYear() + "-" + month + "-" + dom;
}
});