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path: root/www/wiki/resources/src/mediawiki.rcfilters/ui/mw.rcfilters.ui.RclTargetPageWidget.js
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( function ( mw ) {
	/**
	 * Widget to select and display target page on Special:RecentChangesLinked (AKA Related Changes)
	 *
	 * @extends OO.ui.Widget
	 *
	 * @constructor
	 * @param {mw.rcfilters.Controller} controller
	 * @param {mw.rcfilters.dm.FilterItem} targetPageModel
	 * @param {Object} [config] Configuration object
	 */
	mw.rcfilters.ui.RclTargetPageWidget = function MwRcfiltersUiRclTargetPageWidget(
		controller, targetPageModel, config
	) {
		config = config || {};

		// Parent
		mw.rcfilters.ui.RclTargetPageWidget.parent.call( this, config );

		this.controller = controller;
		this.model = targetPageModel;

		this.titleSearch = new mw.widgets.TitleInputWidget( {
			validate: false,
			placeholder: mw.msg( 'rcfilters-target-page-placeholder' ),
			showImages: true,
			showDescriptions: true,
			addQueryInput: false
		} );

		// Events
		this.model.connect( this, { update: 'updateUiBasedOnModel' } );

		this.titleSearch.$input.on( {
			blur: this.onLookupInputBlur.bind( this )
		} );

		this.titleSearch.lookupMenu.connect( this, {
			choose: 'onLookupMenuItemChoose'
		} );

		// Initialize
		this.$element
			.addClass( 'mw-rcfilters-ui-rclTargetPageWidget' )
			.append( this.titleSearch.$element );

		this.updateUiBasedOnModel();
	};

	/* Initialization */

	OO.inheritClass( mw.rcfilters.ui.RclTargetPageWidget, OO.ui.Widget );

	/* Methods */

	/**
	 * Respond to the user choosing a title
	 */
	mw.rcfilters.ui.RclTargetPageWidget.prototype.onLookupMenuItemChoose = function () {
		this.titleSearch.$input.blur();
	};

	/**
	 * Respond to titleSearch $input blur
	 */
	mw.rcfilters.ui.RclTargetPageWidget.prototype.onLookupInputBlur = function () {
		this.controller.setTargetPage( this.titleSearch.getQueryValue() );
	};

	/**
	 * Respond to the model being updated
	 */
	mw.rcfilters.ui.RclTargetPageWidget.prototype.updateUiBasedOnModel = function () {
		var title = mw.Title.newFromText( this.model.getValue() ),
			text = title ? title.toText() : this.model.getValue();
		this.titleSearch.setValue( text );
		this.titleSearch.setTitle( text );
	};
}( mediaWiki ) );