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/**
* Widgets are compositions of one or more OOjs UI elements that users can both view
* and interact with. All widgets can be configured and modified via a standard API,
* and their state can change dynamically according to a model.
*
* @abstract
* @class
* @extends OO.ui.Element
* @mixins OO.EventEmitter
*
* @constructor
* @param {Object} [config] Configuration options
* @cfg {boolean} [disabled=false] Disable the widget. Disabled widgets cannot be used and their
* appearance reflects this state.
*/
OO.ui.Widget = function OoUiWidget( config ) {
// Initialize config
config = $.extend( { disabled: false }, config );
// Parent constructor
OO.ui.Widget.super.call( this, config );
// Mixin constructors
OO.EventEmitter.call( this );
// Properties
this.disabled = null;
this.wasDisabled = null;
// Initialization
this.$element.addClass( 'oo-ui-widget' );
this.setDisabled( !!config.disabled );
};
/* Setup */
OO.inheritClass( OO.ui.Widget, OO.ui.Element );
OO.mixinClass( OO.ui.Widget, OO.EventEmitter );
/* Events */
/**
* @event disable
*
* A 'disable' event is emitted when a widget is disabled.
*
* @param {boolean} disabled Widget is disabled
*/
/**
* @event toggle
*
* A 'toggle' event is emitted when the visibility of the widget changes.
*
* @param {boolean} visible Widget is visible
*/
/* Methods */
/**
* Check if the widget is disabled.
*
* @return {boolean} Widget is disabled
*/
OO.ui.Widget.prototype.isDisabled = function () {
return this.disabled;
};
/**
* Set the 'disabled' state of the widget.
*
* When a widget is disabled, it cannot be used and its appearance is updated to reflect this state.
*
* @param {boolean} disabled Disable widget
* @chainable
*/
OO.ui.Widget.prototype.setDisabled = function ( disabled ) {
var isDisabled;
this.disabled = !!disabled;
isDisabled = this.isDisabled();
if ( isDisabled !== this.wasDisabled ) {
this.$element.toggleClass( 'oo-ui-widget-disabled', isDisabled );
this.$element.toggleClass( 'oo-ui-widget-enabled', !isDisabled );
this.$element.attr( 'aria-disabled', isDisabled.toString() );
this.emit( 'disable', isDisabled );
this.updateThemeClasses();
}
this.wasDisabled = isDisabled;
return this;
};
/**
* Update the disabled state, in case of changes in parent widget.
*
* @chainable
*/
OO.ui.Widget.prototype.updateDisabled = function () {
this.setDisabled( this.disabled );
return this;
};
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