Removing Element.rect.

samples/calculator/tape.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.
 
 class Tape {
   static const int OP_NOOP = 0;
   static const int OP_PLUS = 1;
   static const int OP_MINUS = 2;
   static const int OP_MULTI = 3;
   static const int OP_DIV = 4;
@@ skipping 169 matching lines @@
     tapeUI.tape.elements.add(element.elements[0]);
 
     scrollToTapeBottom();
 
     currentOperator = null;
     currentRegister = "";
     total = 0.0;
   }
 
   void scrollToTapeBottom() {
-    tapeUI.tape.rect.then((ElementRect rect) {
+    window.requestLayoutFrame(() {
       // theTape.rect.scroll.top = rect.scroll.height;
       // TODO(terry): Would like to set scrollTop of tape doesn't seem to work
       //              so I scroll by max lines.
       tapeUI.tape.scrollByLines(100000);
     });
   }
 
   void removeActiveElements() {
     final element = new Element.tag('div');
 
@@ skipping 33 matching lines @@
 
   DivElement get activeInput => window.document.query("#activeInput");
   DivElement get activeTotal => window.document.query("#activeTotal");
 
   void clear() {
     final element = new Element.tag('div');
     element.innerHTML = tapeUI.clearCalculation();
     tapeUI.tape.elements.add(element.elements[0]);
   }
 }