Make isEmpty a getter.

pkg/dartdoc/lib/src/client/dropdown.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 List libraryList;
 InputElement searchInput;
 DivElement dropdown;
 
 /**
  * Update the search drop down based on the current search text.
  */
 updateDropDown(Event event) {
   if (libraryList == null) return;
   if (searchInput == null) return;
   if (dropdown == null) return;
 
   var results = <Result>[];
   String text = searchInput.value;
   if (text == currentSearchText) {
     return;
   }
-  if (text.isEmpty()) {
+  if (text.isEmpty) {
     updateResults(text, results);
     hideDropDown();
     return;
   }
   if (text.contains('.')) {
     // Search type members.
     String typeText = text.substring(0, text.indexOf('.'));
     String memberText = text.substring(text.indexOf('.') + 1);
 
-    if (typeText.isEmpty() && memberText.isEmpty()) {
+    if (typeText.isEmpty && memberText.isEmpty) {
       // Don't search on '.'.
-    } else if (typeText.isEmpty()) {
+    } else if (typeText.isEmpty) {
       // Search text is of the form '.id' => Look up members.
       matchAllMembers(results, memberText);
-    } else if (memberText.isEmpty()) {
+    } else if (memberText.isEmpty) {
       // Search text is of the form 'Type.' => Look up members in 'Type'.
       matchAllMembersInType(results, typeText, memberText);
     } else {
       // Search text is of the form 'Type.id' => Look up member 'id' in 'Type'.
       matchMembersInType(results, text, typeText, memberText);
     }
   } else {
     // Search all entities.
     var searchText = new SearchText(text);
     for (Map<String,Dynamic> library in libraryList)  {
       matchLibrary(results, searchText, library);
       matchLibraryMembers(results, searchText, library);
       matchTypes(results, searchText, library);
     }
   }
   var elements = <Element>[];
   var table = new TableElement();
   table.classes.add('drop-down-table');
   elements.add(table);
 
-  if (results.isEmpty()) {
+  if (results.isEmpty) {
     var row = table.insertRow(0);
     row.innerHTML = "<tr><td>No matches found for '$text'.</td></tr>";
   } else {
     results.sort(resultComparator);
 
     var count = 0;
     for (Result result in results) {
       result.addRow(table);
       if (++count >= 10) {
         break;
@@ skipping 163 matching lines @@
   }
 }
 
 String currentSearchText;
 Result _currentResult;
 List<Result> currentResults = const <Result>[];
 
 void updateResults(String searchText, List<Result> results) {
   currentSearchText = searchText;
   currentResults = results;
-  if (currentResults.isEmpty()) {
+  if (currentResults.isEmpty) {
     _currentResultIndex = -1;
     currentResult = null;
   } else {
     _currentResultIndex = 0;
     currentResult = currentResults[0];
   }
 }
 
 int _currentResultIndex;
 
@@ skipping 45 matching lines @@
     if (currentResult != null) {
       window.location.href = currentResult.url;
       event.preventDefault();
       hideDropDown();
     }
   }
 }
 
 /** Show the search drop down unless there are no current results. */
 void showDropDown() {
-  if (currentResults.isEmpty()) {
+  if (currentResults.isEmpty) {
     hideDropDown();
   } else {
     dropdown.style.visibility = 'visible';
   }
 }
 
 /** Used to prevent hiding the drop down when it is clicked. */
 bool hideDropDownSuspend = false;
 
 /** Hide the search drop down unless suspended. */
@@ skipping 28 matching lines @@
   searchInput = query('#q');
   dropdown = query('#drop-down');
 
   searchInput.on.keyDown.add(handleUpDown);
   searchInput.on.keyUp.add(updateDropDown);
   searchInput.on.change.add(updateDropDown);
   searchInput.on.reset.add(updateDropDown);
   searchInput.on.focus.add((event) => showDropDown());
   searchInput.on.blur.add((event) => hideDropDown());
 }