wikimedia/mediawiki-extensions-Wikibase

/**
 * @license GPL-2.0-or-later
 * @author H. Snater < mediawiki@snater.com >
 */
( function () {
    'use strict';

    require( './jquery.wikibase.toolbar.js' );

    var PARENT = $.wikibase.toolbar;

    /**
     * Toolbar by default featuring a single button.
     *
     * @extends jQuery.wikibase.toolbar
     *
     * @option {string} [label]
     *         Default: ''
     *
     * @option {string} [title]
     *         Default: ''
     *
     * @option {string} [eventName]
     *         Default: 'action'
     *
     * @option {string} [buttonCssClassSuffix]
     *         Default: null
     *
     * @event <custom name> (see options)
     *        Triggered when the default button is hit.
     *        - {jQuery.Event}
     */
    $.widget( 'wikibase.singlebuttontoolbar', PARENT, {
        /**
         * @see jQuery.wikibase.toolbar.options
         */
        options: {
            label: '',
            title: '',
            eventName: 'action',
            buttonCssClassSuffix: null
        },

        /**
         * @see jQuery.wikibase.toolbar._create
         */
        _create: function () {
            PARENT.prototype._create.call( this );

            if ( !this.options.$content.length ) {
                var $scrapedButton = this._scrapeButton();
                this.options.$content = this._initDefaultButton( $scrapedButton );
                if ( !$scrapedButton ) {
                    this.draw();
                }
            }
        },

        /**
         * @param {jQuery|null} $scrapedButton
         * @return {jQuery}
         */
        _initDefaultButton: function ( $scrapedButton ) {
            var self = this,
                $defaultButton = $scrapedButton || $( '<span>' );

            return $defaultButton.toolbarbutton( {
                $label: this.options.label,
                title: this.options.title,
                cssClassSuffix: this.options.buttonCssClassSuffix
            } )
            .on( 'toolbarbuttonaction.' + this.widgetName, function ( event ) {
                self._trigger( self.options.eventName );
            } );
        },

        /**
         * @return {jQuery}
         */
        _scrapeButton: function () {
            var self = this,
                $defaultButton = null;

            this.getContainer().children( '.wikibase-toolbar-button' ).each( function () {
                var $button = $( this );
                if ( $button.text() === self.options.label ) {
                    $defaultButton = $button;
                    return false;
                }
            } );

            return $defaultButton;
        },

        /**
         * @see jQuery.wikibase.toolbaritem.focus
         */
        focus: function () {
            var button = this.options.$content.first().data( 'toolbarbutton' );
            if ( button ) {
                button.focus();
            } else {
                this.element.trigger( 'focus' );
            }
        }
    } );

}() );