Index: client/dom/templates/html/dartium/impl_EventTarget.darttemplate |
diff --git a/client/dom/templates/html/dartium/impl_EventTarget.darttemplate b/client/dom/templates/html/dartium/impl_EventTarget.darttemplate |
new file mode 100644 |
index 0000000000000000000000000000000000000000..6cad86779008d9006e84346ce5be3b6a8abf635f |
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+++ b/client/dom/templates/html/dartium/impl_EventTarget.darttemplate |
@@ -0,0 +1,115 @@ |
+// 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 _EventsImpl implements Events { |
+ |
+ final _EventTargetImpl _ptr; |
+ |
+ final Map<String, EventListenerList> _listenerMap; |
+ |
+ _EventsImpl(this._ptr) : _listenerMap = <EventListenerList>{}; |
+ |
+ EventListenerList operator [](String type) { |
+ return _get(type.toLowerCase()); |
+ } |
+ |
+ EventListenerList _get(String type) { |
+ return _listenerMap.putIfAbsent(type, |
+ () => new _EventListenerListImpl(_ptr, type)); |
+ } |
+} |
+ |
+class _EventListenerWrapper { |
+ final EventListener raw; |
+ final Function wrapped; |
+ final bool useCapture; |
+ _EventListenerWrapper(this.raw, this.wrapped, this.useCapture); |
+} |
+ |
+class _EventListenerListImpl implements EventListenerList { |
+ final _EventTargetImpl _ptr; |
+ final String _type; |
+ List<_EventListenerWrapper> _wrappers; |
+ |
+ _EventListenerListImpl(this._ptr, this._type) : |
+ // TODO(jacobr): switch to <_EventListenerWrapper>[] when the VM allow it. |
+ _wrappers = new List<_EventListenerWrapper>(); |
+ |
+ EventListenerList add(EventListener listener, [bool useCapture = false]) { |
+ _add(listener, useCapture); |
+ return this; |
+ } |
+ |
+ EventListenerList remove(EventListener listener, [bool useCapture = false]) { |
+ _remove(listener, useCapture); |
+ return this; |
+ } |
+ |
+ bool dispatch(Event evt) { |
+ // TODO(jacobr): what is the correct behavior here. We could alternately |
+ // force the event to have the expected type. |
+ assert(evt.type == _type); |
+ return _ptr._dispatchEvent(_unwrap(evt)); |
+ } |
+ |
+ void _add(EventListener listener, bool useCapture) { |
+ _ptr._addEventListener(_type, |
+ _findOrAddWrapper(listener, useCapture), |
+ useCapture); |
+ } |
+ |
+ void _remove(EventListener listener, bool useCapture) { |
+ Function wrapper = _removeWrapper(listener, useCapture); |
+ if (wrapper !== null) { |
+ _ptr._removeEventListener(_type, wrapper, useCapture); |
+ } |
+ } |
+ |
+ Function _removeWrapper(EventListener listener, bool useCapture) { |
+ if (_wrappers === null) { |
+ return null; |
+ } |
+ for (int i = 0; i < _wrappers.length; i++) { |
+ _EventListenerWrapper wrapper = _wrappers[i]; |
+ if (wrapper.raw === listener && wrapper.useCapture == useCapture) { |
+ // Order doesn't matter so we swap with the last element instead of |
+ // performing a more expensive remove from the middle of the list. |
+ if (i + 1 != _wrappers.length) { |
+ _wrappers[i] = _wrappers.removeLast(); |
+ } else { |
+ _wrappers.removeLast(); |
+ } |
+ return wrapper.wrapped; |
+ } |
+ } |
+ return null; |
+ } |
+ |
+ Function _findOrAddWrapper(EventListener listener, bool useCapture) { |
+ if (_wrappers === null) { |
+ _wrappers = <_EventListenerWrapper>[]; |
+ } else { |
+ for (_EventListenerWrapper wrapper in _wrappers) { |
+ if (wrapper.raw === listener && wrapper.useCapture == useCapture) { |
+ return wrapper.wrapped; |
+ } |
+ } |
+ } |
+ final wrapped = (e) { listener(_wrap(e)); }; |
+ _wrappers.add(new _EventListenerWrapper(listener, wrapped, useCapture)); |
+ return wrapped; |
+ } |
+} |
+ |
+class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC { |
+ |
+ Events _on; |
+ |
+ Events get on() { |
+ if (_on == null) _on = new _EventsImpl(this); |
+ return _on; |
+ } |
+ |
+$!MEMBERS |
+} |