/*
* Copyright 2000-2014 Vaadin Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.vaadin.server.widgetsetutils.metadata;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.JClassType;
import com.google.gwt.core.ext.typeinfo.JMethod;
import com.vaadin.client.annotations.OnStateChange;
import com.vaadin.shared.ui.Connect;
/**
* Visits Connector classes and check for methods with @OnStateChange
* annotations.
*
* @since 7.2
* @author Vaadin Ltd
*/
public class OnStateChangeVisitor extends TypeVisitor {
@Override
public void visitConnector(TreeLogger logger, JClassType type,
ConnectorBundle bundle) throws UnableToCompleteException {
Connect connectAnnotation = type.getAnnotation(Connect.class);
if (connectAnnotation != null) {
// Find all the annotated methods in all the superclasses
JClassType connector = type;
while (connector != null) {
for (JMethod method : connector.getMethods()) {
if (method.getAnnotation(OnStateChange.class) != null) {
bundle.setNeedsInvoker(connector, method);
bundle.setNeedsOnStateChangeHandler(type, method);
}
}
connector = connector.getSuperclass();
}
}
}
}