DevTools: Substring autocomplete in Console and StylesSideBar.

third_party/WebKit/Source/devtools/front_end/ui/SuggestBox.js

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 260 matching lines @@
 
   /**
    * @param {string} query
    * @param {string} text
    * @param {string=} className
    * @return {!Element}
    */
   _createItemElement(query, text, className) {
     var element = createElementWithClass('div', 'suggest-box-content-item source-code ' + (className || ''));
     element.tabIndex = -1;
-    if (query && query.length && !text.indexOf(query)) {
-      element.createChild('span', 'query').textContent = query;
-      element.createChild('span').textContent = text.substring(query.length).trimEnd(50);
-    } else {
-      element.createChild('span').textContent = text.trimEnd(50);
-    }
+    var displayText = text.trimEnd(50 + query.length);
+    var index = displayText.toLowerCase().indexOf(query.toLowerCase());
+    if (index > 0)
+      element.createChild('span').textContent = displayText.substring(0, index);
+    if (index > -1)
+      element.createChild('span', 'query').textContent = displayText.substring(index, index + query.length);
+    element.createChild('span').textContent = displayText.substring(index > -1 ? index + query.length : 0);
     element.__fullValue = text;
     element.createChild('span', 'spacer');
     element.addEventListener('mousedown', this._onItemMouseDown.bind(this), false);
     return element;
   }
 
   /**
    * @param {!WebInspector.SuggestBox.Suggestions} items
    * @param {string} userEnteredText
    * @param {function(number): !Promise<{detail:string, description:string}>=} asyncDetails
@@ skipping 70 matching lines @@
    * @param {string} userEnteredText
    * @return {boolean}
    */
   _canShowBox(completions, canShowForSingleItem, userEnteredText) {
     if (!completions || !completions.length)
       return false;
 
     if (completions.length > 1)
       return true;
 
+    if (!completions[0].title.startsWith(userEnteredText))
+      return true;
+
     // Do not show a single suggestion if it is the same as user-entered query, even if allowed to show single-item suggest boxes.
     return canShowForSingleItem && completions[0].title !== userEnteredText;
   }
 
   _ensureRowCountPerViewport() {
     if (this._rowCountPerViewport)
       return;
     if (!this._items.length)
       return;
 
@@ skipping 181 matching lines @@
     this.element.style.left = containerBox.x + 'px';
     this.element.style.top = containerBox.y + 'px';
     this.element.style.height = containerBox.height + 'px';
     this.element.style.width = containerBox.width + 'px';
   }
 
   dispose() {
     this.element.remove();
   }
 };