jquery-ui/ui/widgets/calendar.js
2016-09-29 15:10:46 +02:00

739 lines
19 KiB
JavaScript

/*!
* jQuery UI Calendar @VERSION
* http://jqueryui.com
*
* Copyright jQuery Foundation and other contributors
* Released under the MIT license.
* http://jquery.org/license
*/
//>>label: Calendar
//>>group: Widgets
//>>description: Displays a calendar for inline date selection.
//>>docs: http://api.jqueryui.com/calendar/
//>>demos: http://jqueryui.com/calendar/
//>>css.structure: ../../themes/base/core.css
//>>css.structure: ../../themes/base/calendar.css
//>>css.theme: ../../themes/base/theme.css
( function( factory ) {
if ( typeof define === "function" && define.amd ) {
// AMD. Register as an anonymous module.
define( [
"jquery",
"globalize",
"globalize/date",
"globalize-locales",
"../date",
"./button",
"../widget",
"../version",
"../keycode",
"../unique-id",
"../tabbable",
"../escape-selector"
], factory );
} else {
// Browser globals
factory( jQuery, Globalize );
}
}( function( $, Globalize ) {
return $.widget( "ui.calendar", {
version: "@VERSION",
options: {
buttons: [],
classes: {
"ui-calendar": "ui-corner-all",
"ui-calendar-header-first": "ui-corner-left",
"ui-calendar-header-last": "ui-corner-right",
"ui-calendar-prev": "ui-corner-all",
"ui-calendar-next": "ui-corner-all"
},
dateFormat: { date: "short" },
eachDay: $.noop,
icons: {
prevButton: "ui-icon-circle-triangle-w",
nextButton: "ui-icon-circle-triangle-e"
},
labels: {
"datePickerRole": "date picker",
"nextText": "Next",
"prevText": "Prev",
"weekHeader": "Wk"
},
locale: "en",
max: null,
min: null,
numberOfMonths: 1,
showWeek: false,
value: null,
// callbacks
select: null
},
refreshRelatedOptions: {
dateFormat: true,
eachDay: true,
locale: true,
max: true,
min: true,
showWeek: true,
value: true
},
_create: function() {
this.id = this.element.uniqueId().attr( "id" );
this.gridId = this.id;
this.labels = this.options.labels;
this.buttonClickContext = this.element[ 0 ];
this._setLocale( this.options.locale, this.options.dateFormat );
this.date = new $.ui.date( this.options.value, this._calendarDateOptions );
this.viewDate = this.date.clone();
this.viewDate.eachDay = this.options.eachDay;
this._on( this.element, {
"click .ui-calendar-prev": function( event ) {
event.preventDefault();
this.date.adjust( "M", -this.options.numberOfMonths );
this._updateView();
},
"click .ui-calendar-next": function( event ) {
event.preventDefault();
this.date.adjust( "M", this.options.numberOfMonths );
this._updateView();
},
"mousedown .ui-calendar-calendar button": function( event ) {
this._setOption( "value", new Date( $( event.currentTarget ).data( "timestamp" ) ) );
this._updateDayElement( "ui-state-active" );
// Allow datepicker to handle focus
if ( this._trigger( "select", event ) !== false ) {
this.activeDescendant.closest( this.grid ).focus();
event.preventDefault();
}
},
"mouseenter .ui-calendar-header-buttons button": "_hover",
"mouseleave .ui-calendar-header-buttons button": "_hover",
"mouseenter .ui-calendar-calendar button": "_hover",
"mouseleave .ui-calendar-calendar button": "_hover",
"keydown .ui-calendar-calendar": "_handleKeydown"
} );
this._createCalendar();
this._setActiveDescendant();
},
_hover: function( event ) {
this._addClass( $( event.currentTarget ), null, "ui-state-hover" );
},
_handleKeydown: function( event ) {
var pageAltKey = ( event.altKey || event.ctrlKey && event.shiftKey );
switch ( event.keyCode ) {
case $.ui.keyCode.ENTER:
this.activeDescendant.mousedown();
return;
case $.ui.keyCode.PAGE_UP:
this.date.adjust( pageAltKey ? "Y" : "M", -1 );
break;
case $.ui.keyCode.PAGE_DOWN:
this.date.adjust( pageAltKey ? "Y" : "M", 1 );
break;
case $.ui.keyCode.END:
this.date.setDay( this.date.daysInMonth() );
break;
case $.ui.keyCode.HOME:
this.date.setDay( 1 );
break;
case $.ui.keyCode.LEFT:
this.date.adjust( "D", -1 );
break;
case $.ui.keyCode.UP:
this.date.adjust( "D", -7 );
break;
case $.ui.keyCode.RIGHT:
this.date.adjust( "D", 1 );
break;
case $.ui.keyCode.DOWN:
this.date.adjust( "D", 7 );
break;
default:
return;
}
if ( this._needsRefresh() ) {
this._updateView();
this.activeDescendant.closest( this.grid ).focus();
} else {
this._setActiveDescendant();
}
},
_updateView: function() {
if ( this.options.numberOfMonths > 1 && this.date.year() === this.viewDate.year() ) {
this.viewDate.adjust( "M", this.options.numberOfMonths *
( this.date.month() > this.viewDate.month() ? 1 : -1 )
);
} else {
this.viewDate.setTime( this.date.date().getTime() );
}
this.refresh();
},
_needsRefresh: function() {
if ( this.date.month() !== this.viewDate.month() || this.date.year() !== this.viewDate.year() ) {
// Check if the needed day is already present in our grid due
// to eachDay option changes (eg. other-months demo)
return !this._getDateElement( this._getDayId( this.date ) ).length;
}
return false;
},
_setActiveDescendant: function() {
this.activeDescendant = this._updateDayElement( "ui-state-focus" );
},
_updateDayElement: function( state ) {
var id = this._getDayId( this.date ),
button = this._getDateElement( id ).children( "button" );
this.grid.attr( "aria-activedescendant", id );
this._removeClass( this.grid.find( "button." + state ), null, state );
this._addClass( button, null, state );
return button;
},
_getDateElement: function( id ) {
return this.grid.find( "#" + $.ui.escapeSelector( id ) );
},
_setLocale: function( locale, dateFormat ) {
var globalize = new Globalize( locale ),
weekdayShortFormatter = globalize.dateFormatter( { raw: "EEEEEE" } ),
weekdayNarrowFormatter = globalize.dateFormatter( { raw: "EEEEE" } ),
firstDayRaw = globalize.dateFormatter( { raw: "c" } )( new Date( 1970, 0, 3 ) );
this._format = globalize.dateFormatter( dateFormat );
this._parse = globalize.dateParser( dateFormat );
this._calendarDateOptions = {
firstDay: ( 7 - globalize.parseNumber( firstDayRaw ) ),
formatWeekdayShort: function( date ) {
// Return the short weekday if its length is < 3. Otherwise, its narrow form.
var shortWeekday = weekdayShortFormatter( date );
return shortWeekday.length > 3 ? weekdayNarrowFormatter( date ) : shortWeekday;
},
formatWeekdayFull: globalize.dateFormatter( { raw: "EEEE" } ),
formatMonth: globalize.dateFormatter( { raw: "MMMM" } ),
formatWeekOfYear: globalize.dateFormatter( { raw: "w" } ),
parse: this._parse
};
},
_createCalendar: function() {
this.element
.attr( "role", "region" )
.append( this._buildHeaderButtons() );
if ( this.options.numberOfMonths === 1 ) {
this._buildSinglePicker();
} else {
this._buildMultiplePicker();
}
this._addClass( this.element, "ui-calendar", "ui-widget ui-widget-content ui-helper-clearfix" );
this._refreshHeaderButtons();
this._createButtonPane();
this.grid = this.element.find( ".ui-calendar-calendar" );
},
_buildSinglePicker: function() {
var header = this._buildHeader();
this._addClass( header, "ui-calendar-header-first ui-calendar-header-last" );
this.element
.attr( "aria-labelledby", this.gridId + "-title" )
.append( header )
.append( this._buildGrid() );
},
_buildMultiplePicker: function() {
var element, header,
rowBreak = $( "<div>" ),
currentDate = this.viewDate,
months = this.viewDate.months( this.options.numberOfMonths - 1 ),
labelledBy = [],
i = 0;
for ( ; i < months.length; i++ ) {
// TODO: Shouldn't we pass date as a parameter to build* fns instead of setting this.date?
this.viewDate = months[ i ];
this.gridId = this.id + "-" + i;
labelledBy.push( this.gridId + "-title" );
element = $( "<div>" );
this._addClass( element, "ui-calendar-group" );
header = this._buildHeader();
this._addClass( header, "ui-calendar-header-" +
( ( months[ i ].first ) ? "first" : ( months[ i ].last ) ? "last" : "middle" )
);
element.appendTo( this.element )
.append( header )
.append( this._buildGrid() );
}
this._addClass( this.element, "ui-calendar-multi" )
._addClass( rowBreak, "ui-calendar-row-break" );
this.element
.attr( "aria-labelledby", labelledBy.join( " " ) )
.append( rowBreak );
this.viewDate = currentDate;
},
_buildHeaderButtons: function() {
var buttons = $( "<div>" );
this._addClass( buttons, "ui-calendar-header-buttons" );
return buttons
.append( this.prevButton = this._buildIconButton( "prev" ) )
.append( this.nextButton = this._buildIconButton( "next" ) );
},
_buildIconButton: function( key ) {
var button = $( "<button>" ),
icon = $( "<span>" );
this._addClass( button, "ui-calendar-" + key )
._addClass( icon, null, "ui-icon " + this.options.icons[ key + "Button" ] );
return button.append( icon );
},
_buildHeader: function() {
var header = $( "<div>" ),
title = $( "<div>", { role: "header", id: this.gridId + "-title" } ),
notice = $( "<span>" ).text( ", " + this._getTranslation( "datePickerRole" ) );
this._addClass( header, "ui-calendar-header", "ui-widget-header ui-helper-clearfix" )
._addClass( notice, null, "ui-helper-hidden-accessible" );
return header.append(
title
.append( this._buildTitle() )
.append( notice )
);
},
_buildTitle: function() {
var title = $( "<div>", { role: "alert", id: this.gridId + "-month-label" } ),
month = $( "<span>" ).text( this.viewDate.monthName() ),
year = $( "<span>" ).text( this.viewDate.year() );
this._addClass( title, "ui-calendar-title" )
._addClass( month, "ui-calendar-month" )
._addClass( year, "ui-calendar-year" );
return title
.append( month )
.append( " " )
.append( year );
},
_buildGrid: function() {
var table = $( "<table>", {
role: "grid",
tabindex: 0,
"aria-readonly": true,
"aria-labelledby": this.gridId + "-month-label",
"aria-activedescendant": this._getDayId( this.date )
} );
this._addClass( table, "ui-calendar-calendar" );
return table
.append( this._buildGridHeading() )
.append( this._buildGridBody() );
},
_buildGridHeading: function() {
var head = $( "<thead role='presentation'>" ),
week = $( "<th>" ),
row = $( "<tr role='row'>" ),
i = 0,
weekDayLength = this.viewDate.weekdays().length,
weekdays = this.viewDate.weekdays();
if ( this.options.showWeek ) {
this._addClass( week, "ui-calendar-week-col" );
row.append( week.text( this._getTranslation( "weekHeader" ) ) );
}
for ( ; i < weekDayLength; i++ ) {
row.append( this._buildGridHeaderCell( weekdays[ i ] ) );
}
return head.append( row );
},
_buildGridHeaderCell: function( day ) {
return $( "<th role='columnheader' abbr='" + day.fullname + "' aria-label='" + day.fullname + "'>" +
"<span title='" + day.fullname + "'>" + day.shortname + "</span>" +
"</th>" );
},
_buildGridBody: function() {
var days = this.viewDate.days(),
i = 0,
rows = "";
for ( ; i < days.length; i++ ) {
rows += this._buildWeekRow( days[ i ] );
}
return "<tbody role='presentation'>" + rows + "</tbody>";
},
_buildWeekRow: function( week ) {
var cells = "",
i = 0;
if ( this.options.showWeek ) {
cells += "<td class='ui-calendar-week-col'>" + week.number + "</td>";
}
for ( ; i < week.days.length; i++ ) {
cells += this._buildDayCell( week.days[ i ] );
}
return "<tr role='row'>" + cells + "</tr>";
},
_buildDayCell: function( day ) {
var content = "",
dateObject = new Date( day.timestamp ),
dayName = this._calendarDateOptions.formatWeekdayFull( dateObject ),
attributes = [
"role='gridcell'",
"aria-selected='" + ( this._isCurrent( day ) ? true : false ) + "'",
"aria-label='" + dayName + ", " + this._format( dateObject ) + "'",
"aria-describedby='" + this.gridId + "-month-label'",
"aria-hidden='" + true + "'"
],
selectable = ( day.selectable && this._isValid( dateObject ) );
if ( day.render ) {
attributes.push( "id='" + this.id + "-" + day.year + "-" + day.month + "-" + day.date + "'" );
if ( !selectable ) {
attributes.push( "aria-disabled='true'" );
attributes.push( "class='ui-state-disabled'" );
}
content = this._buildDayElement( day, selectable );
}
return "<td " + attributes.join( " " ) + ">" + content + "</td>";
},
_getDayId: function( date ) {
return this.id + "-" + date.year() + "-" + date.month() + "-" + date.day();
},
_buildDayElement: function( day, selectable ) {
var attributes, content,
classes = [ "ui-state-default" ];
if ( day === this.date && selectable ) {
classes.push( "ui-state-focus" );
}
if ( this._isCurrent( day ) ) {
classes.push( "ui-state-active" );
}
if ( day.today ) {
classes.push( "ui-state-highlight" );
}
if ( day.extraClasses ) {
classes.push( day.extraClasses.split( " " ) );
}
attributes = " class='" + classes.join( " " ) + "'";
if ( selectable ) {
attributes += " tabindex='-1' data-timestamp='" + day.timestamp + "'";
} else {
attributes += " disabled='disabled'";
}
content = "<button" + attributes + ">" + day.date + "</button>";
if ( day.today ) {
content += "<span class='ui-helper-hidden-accessible'>, " + this._getTranslation( "currentText" ) + "</span>";
}
return content;
},
_isCurrent: function( day ) {
return this.options.value && day.timestamp === this.options.value.getTime();
},
_createButtonPane: function() {
this.buttonPane = $( "<div>" );
this.buttonSet = $( "<div>" ).appendTo( this.buttonPane );
this._addClass( this.buttonPane, "ui-calendar-buttonpane", "ui-widget-content ui-helper-clearfix" )
._addClass( this.buttonSet, "ui-calendar-buttonset" );
this._createButtons();
},
_createButtons: function() {
var that = this,
buttons = this.options.buttons;
this.buttonPane.remove();
this.buttonSet.empty();
if ( $.isEmptyObject( buttons ) || ( $.isArray( buttons ) && !buttons.length ) ) {
this._removeClass( this.element, "ui-calendar-buttons" );
return;
}
$.each( buttons, function( name, props ) {
var click, buttonOptions;
props = $.isFunction( props ) ?
{ click: props, text: name } :
props;
// Default to a non-submitting button
props = $.extend( { type: "button" }, props );
// Change the context for the click callback to be the main element
click = props.click;
buttonOptions = {
icon: props.icon,
iconPosition: props.iconPosition,
showLabel: props.showLabel
};
delete props.click;
delete props.icon;
delete props.iconPosition;
delete props.showLabel;
$( "<button></button>", props )
.button( buttonOptions )
.appendTo( that.buttonSet )
.on( "click", function() {
click.apply( that.buttonClickContext, arguments );
} );
} );
this._addClass( this.element, "ui-calendar-buttons" );
this.buttonPane.appendTo( this.element );
},
// Refreshing the entire calendar during interaction confuses screen readers, specifically
// because the grid heading is marked up as a live region and will often not update if it's
// destroyed and recreated instead of just having its text change.
refresh: function() {
this.labels = this.options.labels;
// Determine which day grid cell to focus after refresh
// TODO: Prevent disabled cells from being focused
if ( this.options.numberOfMonths === 1 ) {
this.element.find( ".ui-calendar-title" ).replaceWith( this._buildTitle() );
this.element.find( ".ui-calendar-calendar" ).replaceWith( this._buildGrid() );
} else {
this._refreshMultiplePicker();
}
this.grid = this.element.find( ".ui-calendar-calendar" );
this._setActiveDescendant();
this._refreshHeaderButtons();
this._createButtons();
},
_refreshHeaderButtons: function() {
var prevText = this._getTranslation( "prevText" ),
nextText = this._getTranslation( "nextText" );
this.prevButton.attr( "title", prevText ).children().html( prevText );
this.nextButton.attr( "title", nextText ).children().html( nextText );
this._headerButtonsState();
},
_headerButtonsState: function() {
var months = this.viewDate.months( this.options.numberOfMonths - 1 ),
i = 0;
for ( ; i < months.length; i++ ) {
if ( this.options.min !== null && months[ i ].first ) {
this._disableElement( this.prevButton,
( this.options.min.getMonth() >= months[ i ].month() &&
this.options.min.getFullYear() === months[ i ].year() ) ||
this.options.min.getFullYear() > months[ i ].year()
);
}
if ( this.options.max !== null && months[ i ].last ) {
this._disableElement( this.nextButton,
( this.options.max.getMonth() <= months[ i ].month() &&
this.options.max.getFullYear() === months[ i ].year() ) ||
this.options.max.getFullYear() < months[ i ].year()
);
}
}
},
_disableElement: function( element, state ) {
element.attr( "aria-disabled", state );
this._toggleClass( element, null, "ui-state-disabled", state );
},
_refreshMultiplePicker: function() {
var i = 0;
for ( ; i < this.options.numberOfMonths; i++ ) {
this.element.find( ".ui-calendar-title" ).eq( i ).replaceWith( this._buildTitle() );
this.element.find( ".ui-calendar-calendar" ).eq( i ).replaceWith( this._buildGrid() );
this.viewDate.adjust( "M", 1 );
}
this.viewDate.adjust( "M", -this.options.numberOfMonths );
},
_getTranslation: function( key ) {
return $( "<a>" ).text( this.labels[ key ] ).html();
},
_setHiddenPicker: function() {
this.element.attr( {
"aria-hidden": "true",
"aria-expanded": "false"
} );
},
value: function( value ) {
if ( arguments.length ) {
this.valueAsDate( this._parse( value ) );
} else {
return this._format( this.option( "value" ) );
}
},
valueAsDate: function( value ) {
if ( arguments.length ) {
this.option( "value", value );
} else {
return this.options.value;
}
},
_isValid: function( value ) {
if ( $.type( value ) !== "date" ) {
return false;
}
if ( $.type( this.options.max ) === "date" ) {
if ( value > this.options.max ) {
return false;
}
}
if ( $.type( this.options.min ) === "date" ) {
if ( value < this.options.min ) {
return false;
}
}
return true;
},
_destroy: function() {
this.element
.removeAttr( "role aria-labelledby" )
.removeUniqueId()
.empty();
},
_setOptions: function( options ) {
var that = this,
refresh = false,
dateAttributes = false;
$.each( options, function( key, value ) {
that._setOption( key, value );
if ( key in that.refreshRelatedOptions ) {
refresh = true;
}
if ( key === "dateFormat" || key === "locale" ) {
dateAttributes = true;
}
} );
if ( dateAttributes ) {
this._setLocale( this.options.locale, this.options.dateFormat );
this.date.setAttributes( this._calendarDateOptions );
this.viewDate.setAttributes( this._calendarDateOptions );
}
if ( refresh ) {
this.viewDate.setTime( this.date.date().getTime() );
this.refresh();
}
},
_setOption: function( key, value ) {
if ( key === "value" ) {
if ( this._isValid( value ) ) {
this.date.setTime( value.getTime() );
this._super( key, value );
}
return;
}
if ( key === "max" || key === "min" ) {
if ( $.type( value ) === "date" || value === null ) {
this._super( key, value );
}
return;
}
this._super( key, value );
if ( key === "buttons" ) {
this._createButtons();
}
if ( key === "disabled" ) {
this.element
.toggleClass( "ui-state-disabled", value )
.attr( "aria-disabled", value );
}
if ( key === "eachDay" ) {
this.viewDate.eachDay = value;
}
}
} );
} ) );