Make Storage implement Map.

lib/html/frog/html_frog.dart

 #library('html');
 
 // 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.
 
 // DO NOT EDIT
 // Auto-generated dart:html library.
 
 
@@ skipping 13621 matching lines @@
 
   _SpeechRecognitionAlternativeImpl item(int index) native;
 }
 
 class _SpeechRecognitionResultListImpl implements SpeechRecognitionResultList native "*SpeechRecognitionResultList" {
 
   final int length;
 
   _SpeechRecognitionResultImpl item(int index) native;
 }
+// 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 _StorageImpl implements Storage native "*Storage" {
 
+  // TODO(nweiz): update this when maps support lazy iteration
+  bool containsValue(String value) => getValues().some((e) => e == value);
+
+  bool containsKey(String key) => getItem(key) != null;
+
+  String operator [](String key) => getItem(key);
+
+  void operator []=(String key, String value) => setItem(key, value);
+
+  String putIfAbsent(String key, String ifAbsent()) {
+    if (!containsKey(key)) this[key] = ifAbsent();
+    return this[key];
+  }
+
+  String remove(String key) {
+    final value = this[key];
+    removeItem(key);
+    return value;
+  }
+
+  void forEach(void f(String key, String value)) {
+    for (var i = 0; true; i++) {
+      final key = key(i);
+      if (key == null) return;
+
+      f(key, this[key]);
+    }
+  }
+
+  Collection<String> getKeys() {
+    final keys = [];
+    forEach((k, v) => keys.add(k));
+    return keys;
+  }
+
+  Collection<String> getValues() {
+    final values = [];
+    forEach((k, v) => values.add(v));
+    return values;
+  }
+
+  bool isEmpty() => key(0) == null;
+
   final int length;
 
   void clear() native;
 
   String getItem(String key) native;
 
   String key(int index) native;
 
   void removeItem(String key) native;
 
   void setItem(String key, String data) native;
+
 }
 
 class _StorageEventImpl extends _EventImpl implements StorageEvent native "*StorageEvent" {
 
   final String key;
 
   final String newValue;
 
   final String oldValue;
 
@@ skipping 14433 matching lines @@
 interface SpeechRecognitionResultList {
 
   final int length;
 
   SpeechRecognitionResult item(int index);
 }
 // 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.
 
-// WARNING: Do not edit - generated code.
-
-interface Storage {
+interface Storage extends Map<String, String> {
+/*
 
   final int length;

[Jacob, 2012/04/02 21:06:41]

mark these 3 fields as private in systemhtml.py and you won't have to comment
them out here.

[nweiz, 2012/04/02 22:32:14]

Done.

 
   void clear();
 
   String getItem(String key);
 
   String key(int index);
 
   void removeItem(String key);
 
   void setItem(String key, String data);
+
+*/
 }
 // 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.
 
 // WARNING: Do not edit - generated code.
 
 interface StorageEvent extends Event {
 
   final String key;
@@ skipping 3954 matching lines @@
     if (length < 0) throw new IllegalArgumentException('length');
     if (start < 0) throw new IndexOutOfRangeException(start);
     int end = start + length;
     if (end > a.length) throw new IndexOutOfRangeException(end);
     for (int i = start; i < end; i++) {
       accumulator.add(a[i]);
     }
     return accumulator;
   }
 }