CodeEditor: Add basic code completion and snippet support

Bug: 48828
Change-Id: If7d165fc849ca9687dd7d511b0d111b9969fb2a7

CodeEditor.php

@@ -68,6 +68,7 @@ $wgResourceModules['ext.codeEditor.ace'] = array(
 		'ace/mode-json.js',
 		'ace/mode-css.js',
 		'ace/mode-lua.js',
+		'ace/ext-language_tools.js',
 	),
 ) + $tpl;
 

modules/jquery.codeEditor.js

@@ -183,6 +183,10 @@
 					container.width( box.width() )
 						.height( box.height() );
 
+					// Non-lazy loaded dependencies: Enable code completion
+					ace.require( 'ace/ext/language_tools' );
+
+					// Load the editor now
 					context.codeEditor = ace.edit( editdiv[0] );
 					context.codeEditor.getSession().setValue( box.val() );
 
@@ -193,6 +197,12 @@
 
 					context.codeEditor.setReadOnly( box.prop( 'readonly' ) );
 
+					// The options to enable
+					context.codeEditor.setOptions( {
+						enableBasicAutocompletion: true,
+						enableSnippets: true
+					} );
+
 					// fakeout for bug 29328
 					context.$iframe = [
 						{