/**
 * JavaScript for Special:Search
 */
( function ( mw, $ ) {
	$( function () {
		var $checkboxes, $headerLinks;

		// Emulate HTML5 autofocus behavior in non HTML5 compliant browsers
		if ( !( 'autofocus' in document.createElement( 'input' ) ) ) {
			$( 'input[autofocus]' ).eq( 0 ).focus();
		}

		// Create check all/none button
		$checkboxes = $( '#powersearch input[id^=mw-search-ns]' );
		$( '#mw-search-togglebox' ).append(
			$( '<label>' )
				.text( mw.msg( 'powersearch-togglelabel' ) )
		).append(
			$( '<input type="button" />' )
				.attr( 'id', 'mw-search-toggleall' )
				.prop( 'value', mw.msg( 'powersearch-toggleall' ) )
				.click( function () {
					$checkboxes.prop( 'checked', true );
				} )
		).append(
			$( '<input type="button" />' )
				.attr( 'id', 'mw-search-togglenone' )
				.prop( 'value', mw.msg( 'powersearch-togglenone' ) )
				.click( function () {
					$checkboxes.prop( 'checked', false );
				} )
		);

		// Change the header search links to what user entered
		$headerLinks = $( '.search-types a' );
		$( '#searchText, #powerSearchText' ).change( function () {
			var searchterm = $( this ).val();
			$headerLinks.each( function () {
				var parts = $( this ).attr( 'href' ).split( 'search=' ),
					lastpart = '',
					prefix = 'search=';
				if ( parts.length > 1 && parts[1].indexOf( '&' ) >= 0 ) {
					lastpart = parts[1].substring( parts[1].indexOf( '&' ) );
				} else {
					prefix = '&search=';
				}
				this.href = parts[0] + prefix + encodeURIComponent( searchterm ) + lastpart;
			} );
		} ).trigger( 'change' );

	} );

}( mediaWiki, jQuery ) );
