Strong html

tools/dom/src/AttributeMap.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.
 
 part of html;
 
 abstract class _AttributeMap implements Map<String, String> {
   final Element _element;
 
   _AttributeMap(this._element);
 
   void addAll(Map<String, String> other) {
     other.forEach((k, v) { this[k] = v; });
   }
 
-  bool containsValue(String value) {
+  bool containsValue(Object value) {
     for (var v in this.values) {
       if (value == v) {
         return true;
       }
     }
     return false;
   }
 
   String putIfAbsent(String key, String ifAbsent()) {
     if (!containsKey(key)) {
@@ skipping 11 matching lines @@
   void forEach(void f(String key, String value)) {
     for (var key in keys) {
       var value = this[key];
       f(key, value);
     }
   }
 
   Iterable<String> get keys {
     // TODO: generate a lazy collection instead.
     var attributes = _element._attributes;
-    var keys = new List<String>();
+    var keys = <String>[];
     for (int i = 0, len = attributes.length; i < len; i++) {
-      if (_matches(attributes[i])) {
-        keys.add(attributes[i].name);
+      _Attr attr = attributes[i];
+      if (_matches(attr)) {
+        keys.add(attr.name);
       }
     }
     return keys;
   }
 
   Iterable<String> get values {
     // TODO: generate a lazy collection instead.
     var attributes = _element._attributes;
-    var values = new List<String>();
+    var values = <String>[];
     for (int i = 0, len = attributes.length; i < len; i++) {
-      if (_matches(attributes[i])) {
-        values.add(attributes[i].value);
+      _Attr attr = attributes[i];
+      if (_matches(attr)) {
+        values.add(attr.value);
       }
     }
     return values;
   }
 
   /**
    * Returns true if there is no {key, value} pair in the map.
    */
   bool get isEmpty {
     return length == 0;
@@ skipping 10 matching lines @@
   bool _matches(Node node);
 }
 
 /**
  * Wrapper to expose [Element.attributes] as a typed map.
  */
 class _ElementAttributeMap extends _AttributeMap {
 
   _ElementAttributeMap(Element element): super(element);
 
-  bool containsKey(String key) {
+  bool containsKey(Object key) {
     return _element._hasAttribute(key);
   }
 
-  String operator [](String key) {
+  String operator [](Object key) {
     return _element.getAttribute(key);
   }
 
   void operator []=(String key, String value) {
     _element.setAttribute(key, value);
   }
 
-  String remove(String key) {
+  String remove(Object key) {
     String value = _element.getAttribute(key);
     _element._removeAttribute(key);
     return value;
   }
 
   /**
    * The number of {key, value} pairs in the map.
    */
   int get length {
     return keys.length;
   }
 
   bool _matches(Node node) => node._namespaceUri == null;
 }
 
 /**
  * Wrapper to expose namespaced attributes as a typed map.
  */
 class _NamespacedAttributeMap extends _AttributeMap {
 
   final String _namespace;
 
   _NamespacedAttributeMap(Element element, this._namespace): super(element);
 
-  bool containsKey(String key) {
+  bool containsKey(Object key) {
     return _element._hasAttributeNS(_namespace, key);
   }
 
-  String operator [](String key) {
+  String operator [](Object key) {
     return _element.getAttributeNS(_namespace, key);
   }
 
   void operator []=(String key, String value) {
     _element.setAttributeNS(_namespace, key, value);
   }
 
-  String remove(String key) {
+  String remove(Object key) {
     String value = this[key];
     _element._removeAttributeNS(_namespace, key);
     return value;
   }
 
   /**
    * The number of {key, value} pairs in the map.
    */
   int get length {
     return keys.length;
@@ skipping 13 matching lines @@
 
   _DataAttributeMap(this._attributes);
 
   // interface Map
 
   void addAll(Map<String, String> other) {
     other.forEach((k, v) { this[k] = v; });
   }
 
   // TODO: Use lazy iterator when it is available on Map.
-  bool containsValue(String value) => values.any((v) => v == value);
+  bool containsValue(Object value) => values.any((v) => v == value);
 
-  bool containsKey(String key) => _attributes.containsKey(_attr(key));
+  bool containsKey(Object key) => _attributes.containsKey(_attr(key));
 
-  String operator [](String key) => _attributes[_attr(key)];
+  String operator [](Object key) => _attributes[_attr(key)];
 
   void operator []=(String key, String value) {
     _attributes[_attr(key)] = value;
   }
 
   String putIfAbsent(String key, String ifAbsent()) =>
     _attributes.putIfAbsent(_attr(key), ifAbsent);
 
-  String remove(String key) => _attributes.remove(_attr(key));
+  String remove(Object key) => _attributes.remove(_attr(key));
 
   void clear() {
     // Needs to operate on a snapshot since we are mutating the collection.
     for (String key in keys) {
       remove(key);
     }
   }
 
   void forEach(void f(String key, String value)) {
     _attributes.forEach((String key, String value) {
       if (_matches(key)) {
         f(_strip(key), value);
       }
     });
   }
 
   Iterable<String> get keys {
-    final keys = new List<String>();
+    final keys = <String>[];
     _attributes.forEach((String key, String value) {
       if (_matches(key)) {
         keys.add(_strip(key));
       }
     });
     return keys;
   }
 
   Iterable<String> get values {
-    final values = new List<String>();
+    final values = <String>[];
     _attributes.forEach((String key, String value) {
       if (_matches(key)) {
         values.add(value);
       }
     });
     return values;
   }
 
   int get length => keys.length;
 
@@ skipping 29 matching lines @@
   String _toHyphenedName(String word) {
     var sb = new StringBuffer();
     for (int i = 0; i < word.length; i++) {
       var lower = word[i].toLowerCase();
       if (word[i] != lower && i > 0) sb.write('-');
       sb.write(lower);
     }
     return sb.toString();
   }
 }