1 files changed, 35 insertions, 0 deletions
diff --git a/resources/src/mediawiki.special/mediawiki.special.import.js b/resources/src/mediawiki.special/mediawiki.special.import.js
new file mode 100644
index 00000000..a9a985eb
--- /dev/null
+++ b/resources/src/mediawiki.special/mediawiki.special.import.js
@@ -0,0 +1,35 @@
+/*!
+ * JavaScript for Special:Import
+ */
+( function ( $ ) {
+	function updateImportSubprojectList() {
+		var $projectField = $( '#mw-import-table-interwiki #interwiki' ),
+			$subprojectField = $projectField.parent().find( '#subproject' ),
+			$selected = $projectField.find( ':selected' ),
+			oldValue = $subprojectField.val(),
+			option, options;
+
+		if ( $selected.attr( 'data-subprojects' ) ) {
+			options = $.map( $selected.attr( 'data-subprojects' ).split( ' ' ), function ( el ) {
+				option = document.createElement( 'option' );
+				option.appendChild( document.createTextNode( el ) );
+				option.setAttribute( 'value', el );
+				if ( oldValue === el ) {
+					option.setAttribute( 'selected', 'selected' );
+				}
+				return option;
+			} );
+			$subprojectField.show().empty().append( options );
+		} else {
+			$subprojectField.hide();
+		}
+	}
+
+	$( function () {
+		var $projectField = $( '#mw-import-table-interwiki #interwiki' );
+		if ( $projectField.length ) {
+			$projectField.change( updateImportSubprojectList );
+			updateImportSubprojectList();
+		}
+	} );
+}( jQuery ) );