/**
* IndicatorElement is often mixed into other classes to generate an indicator.
* Indicators are small graphics that are generally used in two ways:
*
* - To draw attention to the status of an item. For example, an indicator might be
* used to show that an item in a list has errors that need to be resolved.
* - To clarify the function of a control that acts in an exceptional way (a button
* that opens a menu instead of performing an action directly, for example).
*
* For a list of indicators included in the library, please see the
* [OOUI documentation on MediaWiki][1].
*
* Note that indicators don't come with any functionality by default. See e.g.
* {@link OO.ui.SearchInputWidget SearchInputWidget} for a working 'clear' or
* {@link OO.ui.ComboBoxInputWidget ComboBoxInputWidget} for a working 'down' indicator.
*
* [1]: https://www.mediawiki.org/wiki/OOUI/Widgets/Icons,_Indicators,_and_Labels#Indicators
*
* @abstract
* @class
*
* @constructor
* @param {Object} [config] Configuration options
* @param {jQuery} [config.$indicator] The indicator element created by the class. If this
* configuration is omitted, the indicator element will use a generated `<span>`.
* @param {string} [config.indicator] Symbolic name of the indicator (e.g. ‘required’ or ‘down’).
* See the [OOUI documentation on MediaWiki][2] for a list of indicators included
* in the library.
* [2]: https://www.mediawiki.org/wiki/OOUI/Widgets/Icons,_Indicators,_and_Labels#Indicators
*/
OO.ui.mixin.IndicatorElement = function OoUiMixinIndicatorElement( config ) {
// Configuration initialization
config = config || {};
// Properties
this.$indicator = null;
this.indicator = null;
// Initialization
this.setIndicator( config.indicator || this.constructor.static.indicator );
this.setIndicatorElement( config.$indicator || $( '<span>' ) );
};
/* Setup */
OO.initClass( OO.ui.mixin.IndicatorElement );
/* Static Properties */
/**
* Symbolic name of the indicator (e.g. ‘required’ or ‘down’).
* The static property will be overridden if the #indicator configuration is used.
*
* @static
* @property {string|null}
*/
OO.ui.mixin.IndicatorElement.static.indicator = null;
/**
* A text string used as the indicator title, a function that returns title text, or `null`
* for no title. The static property will be overridden if the #indicatorTitle configuration is
* used.
*
* @static
* @property {string|Function|null}
*/
OO.ui.mixin.IndicatorElement.static.indicatorTitle = null;
/* Methods */
/**
* Set the indicator element.
*
* If an element is already set, it will be cleaned up before setting up the new element.
*
* @param {jQuery} $indicator Element to use as indicator
*/
OO.ui.mixin.IndicatorElement.prototype.setIndicatorElement = function ( $indicator ) {
Iif ( this.$indicator ) {
this.$indicator
.removeClass( 'oo-ui-indicatorElement-indicator oo-ui-indicator-' + this.indicator )
.removeAttr( 'title' );
}
this.$indicator = $indicator
.addClass( 'oo-ui-indicatorElement-indicator' )
.toggleClass( 'oo-ui-indicatorElement-noIndicator', !this.indicator )
.toggleClass( 'oo-ui-indicator-' + this.indicator, !!this.indicator );
Eif ( this.indicatorTitle !== null ) {
this.$indicator.attr( 'title', this.indicatorTitle );
}
this.updateThemeClasses();
};
/**
* Set the indicator by its symbolic name. Built-in names currently include ‘clear’, ‘up’,
* ‘down’ and ‘required’ (declared via indicators.json). Use `null` to remove the indicator.
*
* @param {string|null} indicator Symbolic name of indicator, or `null` for no indicator
* @chainable
* @return {OO.ui.Element} The element, for chaining
*/
OO.ui.mixin.IndicatorElement.prototype.setIndicator = function ( indicator ) {
indicator = typeof indicator === 'string' && indicator.length ? indicator.trim() : null;
if ( this.indicator !== indicator ) {
if ( this.$indicator ) {
if ( this.indicator !== null ) {
this.$indicator.removeClass( 'oo-ui-indicator-' + this.indicator );
}
if ( indicator !== null ) {
this.$indicator.addClass( 'oo-ui-indicator-' + indicator );
}
}
this.indicator = indicator;
}
this.$element.toggleClass( 'oo-ui-indicatorElement', !!this.indicator );
if ( this.$indicator ) {
this.$indicator.toggleClass( 'oo-ui-indicatorElement-noIndicator', !this.indicator );
}
this.updateThemeClasses();
return this;
};
/**
* Get the symbolic name of the indicator (e.g., ‘required’ or ‘down’).
*
* @return {string|null} Symbolic name of indicator, null if not set
*/
OO.ui.mixin.IndicatorElement.prototype.getIndicator = function () {
return this.indicator;
};
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