01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17: /**
18: * @author Dmitry A. Durnev
19: * @version $Revision$
20: */package java.awt;
21:
22: public abstract class FocusTraversalPolicy {
23:
24: Toolkit toolkit; // for locking/unlocking only
25:
26: public FocusTraversalPolicy() {
27: toolkit = Toolkit.getDefaultToolkit();
28: }
29:
30: public abstract Component getComponentAfter(Container a0,
31: Component a1);
32:
33: public abstract Component getComponentBefore(Container a0,
34: Component a1);
35:
36: public abstract Component getDefaultComponent(Container a0);
37:
38: public abstract Component getFirstComponent(Container a0);
39:
40: public Component getInitialComponent(Window window) {
41: toolkit.lockAWT();
42: try {
43: Component defaultComp = getDefaultComponent(window);
44: return defaultComp;
45: } finally {
46: toolkit.unlockAWT();
47: }
48: }
49:
50: public abstract Component getLastComponent(Container a0);
51:
52: }
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