Show the message 'No files match "abc"' if the search results are empty.

chrome/browser/resources/file_manager/js/file_manager.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * FileManager constructor.
  *
  * FileManager objects encapsulate the functionality of the file selector
  * dialogs, as well as the full screen file manager application (though the
  * latter is not yet implemented).
@@ skipping 4319 matching lines @@
       event.target.setAttribute('checked', 'checked');
     else
       event.target.removeAttribute('checked');
 
     var changeInfo = {};
     changeInfo[pref] = inverted ? !newValue : newValue;
     chrome.fileBrowserPrivate.setGDataPreferences(changeInfo);
   };
 
   FileManager.prototype.onSearchBoxUpdate_ = function(event) {
-    var searchString = this.dialogDom_.querySelector('#search-box').value;
+    var searchString = this.document_.getElementById('search-box').value;

[SeRya, 2012/05/15 14:08:03]

var searchBox = this.document_.getElementById('search-box');

[Oleg Eterevsky, 2012/05/15 14:16:51]

Why? I don't need it.

     if (searchString) {
       this.directoryModel_.addFilter(
           'searchbox',
           function(e) {
             return e.name.substr(0, searchString.length) == searchString;
           });
+
+      this.reportEmptySearchResults_ = function() {
+        if (this.directoryModel_.getFileList().length === 0) {
+          var text = strf('SEARCH_NO_MATCHING_FILES', searchString);
+          this.document_.getElementById('no-search-results').innerHTML = text;
+          this.document_.getElementById('no-search-results').removeAttribute(

[SeRya, 2012/05/15 14:08:03]

.hidden = false;

[Oleg Eterevsky, 2012/05/15 14:16:51]

Done.

+              'hidden');
+        }
+      }.bind(this);
+
+      this.directoryModel_.addEventListener(
+          'rescan-completed', this.reportEmptySearchResults_);

[SeRya, 2012/05/15 14:08:03]

The 'splice' event of fileList is better because it may be changed before rescan
happen (it is not completely wrong because rescan happens anyway but probably
with delay).

For instance we have code that instantly insert just copied file into the file
list not waiting rescan.

[Oleg Eterevsky, 2012/05/15 14:16:51]

I don't believe there is any difference.

     } else {
       this.directoryModel_.removeFilter('searchbox');
+      this.document_.getElementById('no-search-results').setAttribute('hidden',

[SeRya, 2012/05/15 14:08:03]

There is a setter for 'hidden'. Use ".hidden = true".

[Oleg Eterevsky, 2012/05/15 14:16:51]

Done.

+                                                                      'true');
+      this.directoryModel_.removeEventListener(
+          'rescan-completed', this.reportEmptySearchResults_);
     }
   };
 
   FileManager.prototype.decorateSplitter = function(splitterElement) {
     var self = this;
 
     var Splitter = cr.ui.Splitter;
 
     var customSplitter = cr.ui.define('div');
 
@@ skipping 120 matching lines @@
 
     this.directoryModel_.addEventListener('scan-completed', maybeShowBanner);
     this.directoryModel_.addEventListener('rescan-completed', maybeShowBanner);
 
     var style = this.document_.createElement('link');
     style.rel = 'stylesheet';
     style.href = 'css/gdrive_welcome.css';
     this.document_.head.appendChild(style);
   };
 })();