01: /*
02: * Copyright 2007 Google Inc.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License"); you may not
05: * use this file except in compliance with the License. You may obtain a copy of
06: * the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12: * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13: * License for the specific language governing permissions and limitations under
14: * the License.
15: */
16: package com.google.gwt.user.client.ui;
17:
18: /**
19: * A widget that implements this interface fires the events defined by
20: * the {@link DisclosureHandler} interface.
21: */
22: public interface FiresDisclosureEvents {
23:
24: /**
25: * Adds a handler interface to receive open events.
26: *
27: * @param handler the handler to add
28: */
29: void addEventHandler(DisclosureHandler handler);
30:
31: /**
32: * Removes a previously added handler interface.
33: *
34: * @param handler the handler to remove.
35: */
36: void removeEventHandler(DisclosureHandler handler);
37: }
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