/*!
* MediaWiki Widgets – DateInputWidget class.
*
* @copyright 2011-2015 MediaWiki Widgets Team and others; see AUTHORS.txt
* @license The MIT License (MIT); see LICENSE.txt
*/
/*global moment */
( function ( $, mw ) {
/**
* Creates an mw.widgets.DateInputWidget object.
*
* @example
* // Date input widget showcase
* var fieldset = new OO.ui.FieldsetLayout( {
* items: [
* new OO.ui.FieldLayout(
* new mw.widgets.DateInputWidget(),
* {
* align: 'top',
* label: 'Select date'
* }
* ),
* new OO.ui.FieldLayout(
* new mw.widgets.DateInputWidget( { precision: 'month' } ),
* {
* align: 'top',
* label: 'Select month'
* }
* ),
* new OO.ui.FieldLayout(
* new mw.widgets.DateInputWidget( {
* inputFormat: 'DD.MM.YYYY',
* displayFormat: 'Do [of] MMMM [anno Domini] YYYY'
* } ),
* {
* align: 'top',
* label: 'Select date (custom formats)'
* }
* )
* ]
* } );
* $( 'body' ).append( fieldset.$element );
*
* The value is stored in 'YYYY-MM-DD' or 'YYYY-MM' format:
*
* @example
* // Accessing values in a date input widget
* var dateInput = new mw.widgets.DateInputWidget();
* var $label = $( '
' );
* $( 'body' ).append( $label, dateInput.$element );
* dateInput.on( 'change', function () {
* // The value will always be a valid date or empty string, malformed input is ignored
* var date = dateInput.getValue();
* $label.text( 'Selected date: ' + ( date || '(none)' ) );
* } );
*
* @class
* @extends OO.ui.InputWidget
* @mixins OO.ui.mixin.IndicatorElement
*
* @constructor
* @param {Object} [config] Configuration options
* @cfg {string} [precision='day'] Date precision to use, 'day' or 'month'
* @cfg {string} [value] Day or month date (depending on `precision`), in the format 'YYYY-MM-DD'
* or 'YYYY-MM'. If not given or empty string, no date is selected.
* @cfg {string} [inputFormat] Date format string to use for the textual input field. Displayed
* while the widget is active, and the user can type in a date in this format. Should be short
* and easy to type. When not given, defaults to 'YYYY-MM-DD' or 'YYYY-MM', depending on
* `precision`.
* @cfg {string} [displayFormat] Date format string to use for the clickable label. Displayed
* while the widget is inactive. Should be as unambiguous as possible (for example, prefer to
* spell out the month, rather than rely on the order), even if that makes it longer. When not
* given, the default is language-specific.
* @cfg {string} [placeholder] User-visible date format string displayed in the textual input
* field when it's empty. Should be the same as `inputFormat`, but translated to the user's
* language. When not given, defaults to a translated version of 'YYYY-MM-DD' or 'YYYY-MM',
* depending on `precision`.
* @cfg {boolean} [required=false] Mark the field as required. Implies `indicator: 'required'`.
* @cfg {string} [mustBeAfter] Validates the date to be after this. In the 'YYYY-MM-DD' format.
* @cfg {string} [mustBeBefore] Validates the date to be before this. In the 'YYYY-MM-DD' format.
* @cfg {jQuery} [$overlay] Render the calendar into a separate layer. This configuration is
* useful in cases where the expanded calendar is larger than its container. The specified
* overlay layer is usually on top of the container and has a larger area. By default, the
* calendar uses relative positioning.
*/
mw.widgets.DateInputWidget = function MWWDateInputWidget( config ) {
// Config initialization
config = $.extend( { precision: 'day', required: false }, config );
if ( config.required ) {
if ( config.indicator === undefined ) {
config.indicator = 'required';
}
}
var placeholder, mustBeAfter, mustBeBefore;
if ( config.placeholder ) {
placeholder = config.placeholder;
} else if ( config.inputFormat ) {
// We have no way to display a translated placeholder for custom formats
placeholder = '';
} else {
// Messages: mw-widgets-dateinput-placeholder-day, mw-widgets-dateinput-placeholder-month
placeholder = mw.msg( 'mw-widgets-dateinput-placeholder-' + config.precision );
}
// Properties (must be set before parent constructor, which calls #setValue)
this.$handle = $( '
' );
this.label = new OO.ui.LabelWidget();
this.textInput = new OO.ui.TextInputWidget( {
required: config.required,
placeholder: placeholder,
validate: this.validateDate.bind( this )
} );
this.calendar = new mw.widgets.CalendarWidget( {
// Can't pass `$floatableContainer: this.$element` here, the latter is not set yet.
// Instead we call setFloatableContainer() below.
precision: config.precision
} );
this.inCalendar = 0;
this.inTextInput = 0;
this.inputFormat = config.inputFormat;
this.displayFormat = config.displayFormat;
this.required = config.required;
// Validate and set min and max dates as properties
mustBeAfter = moment( config.mustBeAfter, 'YYYY-MM-DD' );
mustBeBefore = moment( config.mustBeBefore, 'YYYY-MM-DD' );
if (
config.mustBeAfter !== undefined &&
mustBeAfter.isValid()
) {
this.mustBeAfter = mustBeAfter;
}
if (
config.mustBeBefore !== undefined &&
mustBeBefore.isValid()
) {
this.mustBeBefore = mustBeBefore;
}
// Parent constructor
mw.widgets.DateInputWidget.parent.call( this, config );
// Mixin constructors
OO.ui.mixin.IndicatorElement.call( this, config );
// Events
this.calendar.connect( this, {
change: 'onCalendarChange'
} );
this.textInput.connect( this, {
enter: 'onEnter',
change: 'onTextInputChange'
} );
this.$element.on( {
focusout: this.onBlur.bind( this )
} );
this.calendar.$element.on( {
click: this.onCalendarClick.bind( this ),
keypress: this.onCalendarKeyPress.bind( this )
} );
this.$handle.on( {
click: this.onClick.bind( this ),
keypress: this.onKeyPress.bind( this )
} );
// Initialization
// Move 'tabindex' from this.$input (which is invisible) to the visible handle
this.setTabIndexedElement( this.$handle );
this.$handle
.append( this.label.$element, this.$indicator )
.addClass( 'mw-widget-dateInputWidget-handle' );
this.calendar.$element
.addClass( 'mw-widget-dateInputWidget-calendar' );
this.$element
.addClass( 'mw-widget-dateInputWidget' )
.append( this.$handle, this.textInput.$element, this.calendar.$element );
if ( config.$overlay ) {
this.calendar.setFloatableContainer( this.$element );
config.$overlay.append( this.calendar.$element );
// The text input and calendar are not in DOM order, so fix up focus transitions.
this.textInput.$input.on( 'keydown', function ( e ) {
if ( e.which === OO.ui.Keys.TAB ) {
if ( e.shiftKey ) {
// Tabbing backward from text input: normal browser behavior
$.noop();
} else {
// Tabbing forward from text input: just focus the calendar
this.calendar.$element.focus();
return false;
}
}
}.bind( this ) );
this.calendar.$element.on( 'keydown', function ( e ) {
if ( e.which === OO.ui.Keys.TAB ) {
if ( e.shiftKey ) {
// Tabbing backward from calendar: just focus the text input
this.textInput.$input.focus();
return false;
} else {
// Tabbing forward from calendar: focus the text input, then allow normal browser
// behavior to move focus to next focusable after it
this.textInput.$input.focus();
}
}
}.bind( this ) );
}
// Set handle label and hide stuff
this.updateUI();
this.textInput.toggle( false );
this.calendar.toggle( false );
};
/* Inheritance */
OO.inheritClass( mw.widgets.DateInputWidget, OO.ui.InputWidget );
OO.mixinClass( mw.widgets.DateInputWidget, OO.ui.mixin.IndicatorElement );
/* Methods */
/**
* @inheritdoc
* @protected
*/
mw.widgets.DateInputWidget.prototype.getInputElement = function () {
return $( '' );
};
/**
* Respond to calendar date change events.
*
* @private
*/
mw.widgets.DateInputWidget.prototype.onCalendarChange = function () {
this.inCalendar++;
if ( !this.inTextInput ) {
// If this is caused by user typing in the input field, do not set anything.
// The value may be invalid (see #onTextInputChange), but displayable on the calendar.
this.setValue( this.calendar.getDate() );
}
this.inCalendar--;
};
/**
* Respond to text input value change events.
*
* @private
*/
mw.widgets.DateInputWidget.prototype.onTextInputChange = function () {
var mom,
widget = this,
value = this.textInput.getValue(),
valid = this.isValidDate( value );
this.inTextInput++;
if ( value === '' ) {
// No date selected
widget.setValue( '' );
} else if ( valid ) {
// Well-formed date value, parse and set it
mom = moment( value, widget.getInputFormat() );
// Use English locale to avoid number formatting
widget.setValue( mom.locale( 'en' ).format( widget.getInternalFormat() ) );
} else {
// Not well-formed, but possibly partial? Try updating the calendar, but do not set the
// internal value. Generally this only makes sense when 'inputFormat' is little-endian (e.g.
// 'YYYY-MM-DD'), but that's hard to check for, and might be difficult to handle the parsing
// right for weird formats. So limit this trick to only when we're using the default
// 'inputFormat', which is the same as the internal format, 'YYYY-MM-DD'.
if ( widget.getInputFormat() === widget.getInternalFormat() ) {
widget.calendar.setDate( widget.textInput.getValue() );
}
}
widget.inTextInput--;
};
/**
* @inheritdoc
*/
mw.widgets.DateInputWidget.prototype.setValue = function ( value ) {
var oldValue = this.value;
if ( !moment( value, this.getInternalFormat() ).isValid() ) {
value = '';
}
mw.widgets.DateInputWidget.parent.prototype.setValue.call( this, value );
if ( this.value !== oldValue ) {
this.updateUI();
this.setValidityFlag();
}
return this;
};
/**
* Handle text input and calendar blur events.
*
* @private
*/
mw.widgets.DateInputWidget.prototype.onBlur = function () {
var widget = this;
setTimeout( function () {
var $focussed = $( ':focus' );
// Deactivate unless the focus moved to something else inside this widget
if (
!OO.ui.contains( widget.$element[ 0 ], $focussed[ 0 ], true ) &&
// Calendar might be in an $overlay
!OO.ui.contains( widget.calendar.$element[ 0 ], $focussed[ 0 ], true )
) {
widget.deactivate();
}
}, 0 );
};
/**
* @inheritdoc
*/
mw.widgets.DateInputWidget.prototype.focus = function () {
this.activate();
return this;
};
/**
* @inheritdoc
*/
mw.widgets.DateInputWidget.prototype.blur = function () {
this.deactivate();
return this;
};
/**
* Update the contents of the label, text input and status of calendar to reflect selected value.
*
* @private
*/
mw.widgets.DateInputWidget.prototype.updateUI = function () {
if ( this.getValue() === '' ) {
this.textInput.setValue( '' );
this.calendar.setDate( null );
this.label.setLabel( mw.msg( 'mw-widgets-dateinput-no-date' ) );
this.$element.addClass( 'mw-widget-dateInputWidget-empty' );
} else {
if ( !this.inTextInput ) {
this.textInput.setValue( this.getMoment().format( this.getInputFormat() ) );
}
if ( !this.inCalendar ) {
this.calendar.setDate( this.getValue() );
}
this.label.setLabel( this.getMoment().format( this.getDisplayFormat() ) );
this.$element.removeClass( 'mw-widget-dateInputWidget-empty' );
}
};
/**
* Deactivate this input field for data entry. Closes the calendar and hides the text field.
*
* @private
*/
mw.widgets.DateInputWidget.prototype.deactivate = function () {
this.$element.removeClass( 'mw-widget-dateInputWidget-active' );
this.$handle.show();
this.textInput.toggle( false );
this.calendar.toggle( false );
this.setValidityFlag();
};
/**
* Activate this input field for data entry. Opens the calendar and shows the text field.
*
* @private
*/
mw.widgets.DateInputWidget.prototype.activate = function () {
this.calendar.resetUI();
this.$element.addClass( 'mw-widget-dateInputWidget-active' );
this.$handle.hide();
this.textInput.toggle( true );
this.calendar.toggle( true );
this.textInput.$input.focus();
};
/**
* Get the date format to be used for handle label when the input is inactive.
*
* @private
* @return {string} Format string
*/
mw.widgets.DateInputWidget.prototype.getDisplayFormat = function () {
if ( this.displayFormat !== undefined ) {
return this.displayFormat;
}
if ( this.calendar.getPrecision() === 'month' ) {
return 'MMMM YYYY';
} else {
// The formats Moment.js provides:
// * ll: Month name, day of month, year
// * lll: Month name, day of month, year, time
// * llll: Month name, day of month, day of week, year, time
//
// The format we want:
// * ????: Month name, day of month, day of week, year
//
// We try to construct it as 'llll - (lll - ll)' and hope for the best.
// This seems to work well for many languages (maybe even all?).
var localeData = moment.localeData( moment.locale() ),
llll = localeData.longDateFormat( 'llll' ),
lll = localeData.longDateFormat( 'lll' ),
ll = localeData.longDateFormat( 'll' ),
format = llll.replace( lll.replace( ll, '' ), '' );
return format;
}
};
/**
* Get the date format to be used for the text field when the input is active.
*
* @private
* @return {string} Format string
*/
mw.widgets.DateInputWidget.prototype.getInputFormat = function () {
if ( this.inputFormat !== undefined ) {
return this.inputFormat;
}
return {
day: 'YYYY-MM-DD',
month: 'YYYY-MM'
}[ this.calendar.getPrecision() ];
};
/**
* Get the date format to be used internally for the value. This is not configurable in any way,
* and always either 'YYYY-MM-DD' or 'YYYY-MM'.
*
* @private
* @return {string} Format string
*/
mw.widgets.DateInputWidget.prototype.getInternalFormat = function () {
return {
day: 'YYYY-MM-DD',
month: 'YYYY-MM'
}[ this.calendar.getPrecision() ];
};
/**
* Get the Moment object for current value.
*
* @return {Object} Moment object
*/
mw.widgets.DateInputWidget.prototype.getMoment = function () {
return moment( this.getValue(), this.getInternalFormat() );
};
/**
* Handle mouse click events.
*
* @private
* @param {jQuery.Event} e Mouse click event
*/
mw.widgets.DateInputWidget.prototype.onClick = function ( e ) {
if ( !this.isDisabled() && e.which === 1 ) {
this.activate();
}
return false;
};
/**
* Handle key press events.
*
* @private
* @param {jQuery.Event} e Key press event
*/
mw.widgets.DateInputWidget.prototype.onKeyPress = function ( e ) {
if ( !this.isDisabled() &&
( e.which === OO.ui.Keys.SPACE || e.which === OO.ui.Keys.ENTER )
) {
this.activate();
return false;
}
};
/**
* Handle calendar key press events.
*
* @private
* @param {jQuery.Event} e Key press event
*/
mw.widgets.DateInputWidget.prototype.onCalendarKeyPress = function ( e ) {
if ( !this.isDisabled() && e.which === OO.ui.Keys.ENTER ) {
this.deactivate();
this.$handle.focus();
return false;
}
};
/**
* Handle calendar click events.
*
* @private
* @param {jQuery.Event} e Mouse click event
*/
mw.widgets.DateInputWidget.prototype.onCalendarClick = function ( e ) {
if (
!this.isDisabled() &&
e.which === 1 &&
$( e.target ).hasClass( 'mw-widget-calendarWidget-day' )
) {
this.deactivate();
this.$handle.focus();
return false;
}
};
/**
* Handle text input enter events.
*
* @private
*/
mw.widgets.DateInputWidget.prototype.onEnter = function () {
this.deactivate();
this.$handle.focus();
};
/**
* @private
* @param {string} date Date string, to be valid, must be in 'YYYY-MM-DD' or 'YYYY-MM' format or
* (unless the field is required) empty
* @returns {boolean}
*/
mw.widgets.DateInputWidget.prototype.validateDate = function ( date ) {
var isValid;
if ( date === '' ) {
isValid = !this.required;
} else {
isValid = this.isValidDate( date ) && this.isInRange( date );
}
return isValid;
};
/**
* @private
* @param {string} date Date string, to be valid, must be in 'YYYY-MM-DD' or 'YYYY-MM' format
* @returns {boolean}
*/
mw.widgets.DateInputWidget.prototype.isValidDate = function ( date ) {
// "Half-strict mode": for example, for the format 'YYYY-MM-DD', 2015-1-3 instead of 2015-01-03
// is okay, but 2015-01 isn't, and neither is 2015-01-foo. Use Moment's "fuzzy" mode and check
// parsing flags for the details (stoled from implementation of moment#isValid).
var
mom = moment( date, this.getInputFormat() ),
flags = mom.parsingFlags();
return mom.isValid() && flags.charsLeftOver === 0 && flags.unusedTokens.length === 0;
};
/**
* Validates if the date is within the range configured with {@link #cfg-mustBeAfter}
* and {@link #cfg-mustBeBefore}.
*
* @private
* @param {string} date Date string, to be valid, must be empty (no date selected) or in
* 'YYYY-MM-DD' or 'YYYY-MM' format to be valid
* @returns {boolean}
*/
mw.widgets.DateInputWidget.prototype.isInRange = function ( date ) {
var momentDate = moment( date, 'YYYY-MM-DD' ),
isAfter = ( this.mustBeAfter === undefined || momentDate.isAfter( this.mustBeAfter ) ),
isBefore = ( this.mustBeBefore === undefined || momentDate.isBefore( this.mustBeBefore ) );
return isAfter && isBefore;
};
/**
* Get the validity of current value.
*
* This method returns a promise that resolves if the value is valid and rejects if
* it isn't. Uses {@link #validateDate}.
*
* @return {jQuery.Promise} A promise that resolves if the value is valid, rejects if not.
*/
mw.widgets.DateInputWidget.prototype.getValidity = function () {
var isValid = this.validateDate( this.getValue() );
if ( isValid ) {
return $.Deferred().resolve().promise();
} else {
return $.Deferred().reject().promise();
}
};
/**
* Sets the 'invalid' flag appropriately.
*
* @param {boolean} [isValid] Optionally override validation result
*/
mw.widgets.DateInputWidget.prototype.setValidityFlag = function ( isValid ) {
var widget = this,
setFlag = function ( valid ) {
if ( !valid ) {
widget.$input.attr( 'aria-invalid', 'true' );
} else {
widget.$input.removeAttr( 'aria-invalid' );
}
widget.setFlags( { invalid: !valid } );
};
if ( isValid !== undefined ) {
setFlag( isValid );
} else {
this.getValidity().then( function () {
setFlag( true );
}, function () {
setFlag( false );
} );
}
};
}( jQuery, mediaWiki ) );