Index: sdk/lib/html/src/AttributeMap.dart |
diff --git a/sdk/lib/html/src/AttributeMap.dart b/sdk/lib/html/src/AttributeMap.dart |
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+++ b/sdk/lib/html/src/AttributeMap.dart |
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+// 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> { |
+ |
+ bool containsValue(String value) { |
+ for (var v in this.values) { |
+ if (value == v) { |
+ return true; |
+ } |
+ } |
+ return false; |
+ } |
+ |
+ String putIfAbsent(String key, String ifAbsent()) { |
+ if (!containsKey(key)) { |
+ this[key] = ifAbsent(); |
+ } |
+ return this[key]; |
+ } |
+ |
+ void clear() { |
+ for (var key in keys) { |
+ remove(key); |
+ } |
+ } |
+ |
+ void forEach(void f(String key, String value)) { |
+ for (var key in keys) { |
+ var value = this[key]; |
+ f(key, value); |
+ } |
+ } |
+ |
+ Collection<String> get keys { |
+ // TODO: generate a lazy collection instead. |
+ var attributes = _element.$dom_attributes; |
+ var keys = new List<String>(); |
+ for (int i = 0, len = attributes.length; i < len; i++) { |
+ if (_matches(attributes[i])) { |
+ keys.add(attributes[i].$dom_localName); |
+ } |
+ } |
+ return keys; |
+ } |
+ |
+ Collection<String> get values { |
+ // TODO: generate a lazy collection instead. |
+ var attributes = _element.$dom_attributes; |
+ var values = new List<String>(); |
+ for (int i = 0, len = attributes.length; i < len; i++) { |
+ if (_matches(attributes[i])) { |
+ values.add(attributes[i].value); |
+ } |
+ } |
+ return values; |
+ } |
+ |
+ /** |
+ * Returns true if there is no {key, value} pair in the map. |
+ */ |
+ bool get isEmpty { |
+ return length == 0; |
+ } |
+ |
+ /** |
+ * Checks to see if the node should be included in this map. |
+ */ |
+ bool _matches(Node node); |
+} |
+ |
+/** |
+ * Wrapper to expose [Element.attributes] as a typed map. |
+ */ |
+class _ElementAttributeMap extends _AttributeMap { |
+ |
+ final Element _element; |
+ |
+ _ElementAttributeMap(this._element); |
+ |
+ bool containsKey(String key) { |
+ return _element.$dom_hasAttribute(key); |
+ } |
+ |
+ String operator [](String key) { |
+ return _element.$dom_getAttribute(key); |
+ } |
+ |
+ void operator []=(String key, value) { |
+ _element.$dom_setAttribute(key, '$value'); |
+ } |
+ |
+ String remove(String key) { |
+ String value = _element.$dom_getAttribute(key); |
+ _element.$dom_removeAttribute(key); |
+ return value; |
+ } |
+ |
+ /** |
+ * The number of {key, value} pairs in the map. |
+ */ |
+ int get length { |
+ return keys.length; |
+ } |
+ |
+ bool _matches(Node node) => node.$dom_namespaceURI == null; |
+} |
+ |
+/** |
+ * Wrapper to expose namespaced attributes as a typed map. |
+ */ |
+class _NamespacedAttributeMap extends _AttributeMap { |
+ |
+ final Element _element; |
+ final String _namespace; |
+ |
+ _NamespacedAttributeMap(this._element, this._namespace); |
+ |
+ bool containsKey(String key) { |
+ return _element.$dom_hasAttributeNS(_namespace, key); |
+ } |
+ |
+ String operator [](String key) { |
+ return _element.$dom_getAttributeNS(_namespace, key); |
+ } |
+ |
+ void operator []=(String key, value) { |
+ _element.$dom_setAttributeNS(_namespace, key, '$value'); |
+ } |
+ |
+ String remove(String key) { |
+ String value = this[key]; |
+ _element.$dom_removeAttributeNS(_namespace, key); |
+ return value; |
+ } |
+ |
+ /** |
+ * The number of {key, value} pairs in the map. |
+ */ |
+ int get length { |
+ return keys.length; |
+ } |
+ |
+ bool _matches(Node node) => node.$dom_namespaceURI == _namespace; |
+} |
+ |
+ |
+/** |
+ * Provides a Map abstraction on top of data-* attributes, similar to the |
+ * dataSet in the old DOM. |
+ */ |
+class _DataAttributeMap implements Map<String, String> { |
+ |
+ final Map<String, String> $dom_attributes; |
+ |
+ _DataAttributeMap(this.$dom_attributes); |
+ |
+ // interface Map |
+ |
+ // TODO: Use lazy iterator when it is available on Map. |
+ bool containsValue(String value) => values.some((v) => v == value); |
+ |
+ bool containsKey(String key) => $dom_attributes.containsKey(_attr(key)); |
+ |
+ String operator [](String key) => $dom_attributes[_attr(key)]; |
+ |
+ void operator []=(String key, value) { |
+ $dom_attributes[_attr(key)] = '$value'; |
+ } |
+ |
+ String putIfAbsent(String key, String ifAbsent()) => |
+ $dom_attributes.putIfAbsent(_attr(key), ifAbsent); |
+ |
+ String remove(String key) => $dom_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)) { |
+ $dom_attributes.forEach((String key, String value) { |
+ if (_matches(key)) { |
+ f(_strip(key), value); |
+ } |
+ }); |
+ } |
+ |
+ Collection<String> get keys { |
+ final keys = new List<String>(); |
+ $dom_attributes.forEach((String key, String value) { |
+ if (_matches(key)) { |
+ keys.add(_strip(key)); |
+ } |
+ }); |
+ return keys; |
+ } |
+ |
+ Collection<String> get values { |
+ final values = new List<String>(); |
+ $dom_attributes.forEach((String key, String value) { |
+ if (_matches(key)) { |
+ values.add(value); |
+ } |
+ }); |
+ return values; |
+ } |
+ |
+ int get length => keys.length; |
+ |
+ // TODO: Use lazy iterator when it is available on Map. |
+ bool get isEmpty => length == 0; |
+ |
+ // Helpers. |
+ String _attr(String key) => 'data-$key'; |
+ bool _matches(String key) => key.startsWith('data-'); |
+ String _strip(String key) => key.substring(5); |
+} |