01: // Copyright 2007 The Apache Software Foundation
02: //
03: // Licensed under the Apache License, Version 2.0 (the "License");
04: // you may not use this file except in compliance with the License.
05: // You may obtain a copy of the License at
06: //
07: // http://www.apache.org/licenses/LICENSE-2.0
08: //
09: // Unless required by applicable law or agreed to in writing, software
10: // distributed under the License is distributed on an "AS IS" BASIS,
11: // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12: // See the License for the specific language governing permissions and
13: // limitations under the License.
14:
15: package org.apache.tapestry.util;
16:
17: import java.util.List;
18:
19: import org.apache.tapestry.OptionGroupModel;
20: import org.apache.tapestry.OptionModel;
21: import org.apache.tapestry.SelectModel;
22: import org.apache.tapestry.SelectModelVisitor;
23:
24: /**
25: * Base class for {@link SelectModel} implementations, whose primary job is to provide the
26: * {@link #visit(SelectModelVisitor)} method.
27: */
28: public abstract class AbstractSelectModel implements SelectModel {
29: public final void visit(SelectModelVisitor visitor) {
30: List<OptionGroupModel> groups = getOptionGroups();
31:
32: if (groups != null) {
33: for (OptionGroupModel groupModel : groups) {
34: visitor.beginOptionGroup(groupModel);
35:
36: visitOptions(groupModel.getOptions(), visitor);
37:
38: visitor.endOptionGroup(groupModel);
39: }
40: }
41:
42: visitOptions(getOptions(), visitor);
43: }
44:
45: private void visitOptions(List<OptionModel> options,
46: SelectModelVisitor vistor) {
47: if (options != null) {
48: for (OptionModel optionModel : options)
49: vistor.option(optionModel);
50: }
51: }
52:
53: }
|