Deprecating Element.elements for Element.children.

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 100 matching lines @@
     }
     if (op != OP_NOOP) {
       currentOperator = op;
     }
 
     final element = new Element.tag('div');
 
     DivElement active = activeInput;
     if (op == OP_NOOP) {
       if (active != null) {
-        String displayedOp = active.elements[0].text;
+        String displayedOp = active.children[0].text;
         active.innerHTML = tapeUI.firstOp(displayedOp, number);
       } else {
         element.innerHTML = tapeUI.displayOpAndNumber(opAsStr, number);
-        tapeUI.tape.elements.add(element.elements[0]);
+        tapeUI.tape.children.add(element.children[0]);
         element.innerHTML = tapeUI.alignSubTotal();;
-        tapeUI.tape.elements.add(element.elements[0]);
+        tapeUI.tape.children.add(element.children[0]);
         element.innerHTML = tapeUI.lineBreak();
-        tapeUI.tape.elements.add(element.elements[0]);
+        tapeUI.tape.children.add(element.children[0]);
       }
 
       // Update running total if it exist.
       active = activeTotal;
       if (active != null) {
         active.text = "= ${formatOutput(displayTotal)}";
       }
     } else {
       removeActiveElements();
 
       String leftSide;
       if (op == OP_EQUAL) {
         leftSide = tapeUI.displayEqual();
       } else {
         leftSide = tapeUI.displayOp(opAsStr);
       }
 
       element.innerHTML = leftSide;
-      tapeUI.tape.elements.add(element.elements[0]);
+      tapeUI.tape.children.add(element.children[0]);
 
       if (op == OP_EQUAL) {
         element.innerHTML = tapeUI.displayTotal(formatOutput(displayTotal));
       } else {
         element.innerHTML = tapeUI.displayActiveTotal();
       }
-      tapeUI.tape.elements.add(element.elements[0]);
+      tapeUI.tape.children.add(element.children[0]);
 
       element.innerHTML = tapeUI.lineBreak();
-      tapeUI.tape.elements.add(element.elements[0]);
+      tapeUI.tape.children.add(element.children[0]);
     }
 
     scrollToTapeBottom();
   }
 
   String formatOutput(double displayTotal) {
     String formattedNum = "${displayTotal.toStringAsFixed(5)}";
     int dotIdx = formattedNum.indexOf(".");
     if (dotIdx >= 0) {
       if (formattedNum.substring(dotIdx) == ".00000") {
         formattedNum = formattedNum.substring(0, dotIdx);
       }
     }
 
     return formattedNum;
   }
 
   void displayError(String err) {
     removeActiveElements();
     DivElement element = new Element.tag("div");
     element.innerHTML = tapeUI.displayError(err);
-    tapeUI.tape.elements.add(element.elements[0]);
+    tapeUI.tape.children.add(element.children[0]);
 
     scrollToTapeBottom();
 
     currentOperator = null;
     currentRegister = "";
     total = 0.0;
   }
 
   void scrollToTapeBottom() {
     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');
 
     DivElement active = activeInput;
     if (active != null) {
       element.innerHTML = tapeUI.replaceActiveOp(active.innerHTML);
-      active.replaceWith(element.elements[0]);
+      active.replaceWith(element.children[0]);
 
       active = activeTotal;
       if (active != null) {
         element.innerHTML = tapeUI.replaceActiveTotal(active.text);
-        active.replaceWith(element.elements[0]);
+        active.replaceWith(element.children[0]);
       }
     }
   }
 
   void clearTotal() {
     final element = new Element.tag('div');
 
     element.innerHTML = tapeUI.clearCalculation();
-    tapeUI.tape.elements.add(element.elements[0]);
+    tapeUI.tape.children.add(element.children[0]);
 
     scrollToTapeBottom();
   }
 
   bool get isClear {
-    return tapeUI.tape.elements.last.classes.contains(TapeUI.clearCalc);
+    return tapeUI.tape.children.last.classes.contains(TapeUI.clearCalc);
   }
 
   void clearTape() {
-    tapeUI.tape.elements.clear();
+    tapeUI.tape.children.clear();
 
     SettingsDialog settingsUI = new SettingsDialog();
-    tapeUI.tape.elements.add(settingsUI.root);
+    tapeUI.tape.children.add(settingsUI.root);
     mySettings = new Settings(settingsUI, Settings.THEME_BUTTON);
   }
 
   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]);
+    tapeUI.tape.children.add(element.children[0]);
   }
 }