Refactoring: post review corrections.

plugins/autocomplete/plugin.js

@@ -92,9 +92,9 @@
 	 *
 	 *	// Finally, instantiate the autocomplete class.
 	 *	new CKEDITOR.plugins.autocomplete( editor, {
-	 *  	textTestCallback: textTestCallback,
-	 *  	dataCallback: dataCallback
-	 *  } );
+	 *		textTestCallback: textTestCallback,
+	 *		dataCallback: dataCallback
+	 *	} );
 	 * ```
 	 *
 	 * # Changing the behavior of the autocomplete class by subclassing it

tests/plugins/textwatcher/manual/throttle.html

@@ -3,35 +3,57 @@
 	height: 200px;
 	overflow-y: auto;
 }
+
+#performance-msg {
+	position: absolute;
+	top: 20px;
+	border: 2px solid orange;
+	color: orange;
+	background: #111;
+	padding: 0.3em;
+	right: 150px;
+	display: none;
+}
 </style>
+<div id="performance-msg">
+	Your browser does not have
+	<var>performance.now()</var>
+	function. So you have to feel out the timings :(
+</div>
 <strong>Logger: </strong>
 <ul id="logger"></ul>
 <div id="editor1" ></div>
 
 <script>
 	var logger = document.getElementById( 'logger' ),
+		hasPerformance = window.performance && window.performance.now,
 		editor = CKEDITOR.replace( 'editor1', {
 		on: {
 			instanceReady: function() {
-				var counter = 0,
-					counterInterval = 100,
-
+				var lastTime = null,
 					textWatcher = new CKEDITOR.plugins.textWatcher( editor, function( selectionRange ) {
-					var matchEl = document.createElement( 'li' );
+						var now = hasPerformance ? performance.now() : null,
+							matchEl = document.createElement( 'li' );
 
-					matchEl.innerText = 'Time: ' + counter + 'ms, Text: ' + selectionRange.startContainer.getText();
-					logger.appendChild( matchEl );
+						if ( lastTime === null ) {
+							lastTime = now;
+						}
 
-					if ( counter == 0 ) {
-						setInterval( function() {
-							counter += counterInterval;
-						}, counterInterval );
-					}
+						matchEl.innerText = hasPerformance ? 'Delta: ' + ( now - lastTime ) + 'ms, ' : '';
+						matchEl.innerText += 'Text: ' + selectionRange.startContainer.getText();
+						logger.appendChild( matchEl );
 
-				}, 2000 );
+						lastTime = now;
+
+						// Throttling set slightly higher than expected due to https://github.com/ckeditor/ckeditor-dev/pull/2001#discussion_r194047585.
+					}, 2002 );
 
 				textWatcher.attach();
 			}
 		}
 	} );
+
+	if ( !hasPerformance ) {
+		CKEDITOR.document.getById( 'performance-msg' ).setStyle( 'display', 'block' );
+	}
 </script>

tests/plugins/textwatcher/manual/throttle.md

@@ -4,16 +4,15 @@
 
 1. Focus the editor.
 1. Start typing `a` constantly.
-1. Check log above the editor. 
+1. Check log above the editor.
 
 ## Expected
 
 Typed text should be logged:
+
 1. Immediately after first typed character.
 1. Not more often than once every 2000ms.
 
 ## Unexpected
 
 Typed text is logged immediately or in invalid interval times.
-
-***Other details*** Measured time by logger can have slight error +/- 100ms.