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/*
* Copyright 2011 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 java.lang.annotation.Annotation;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.typeinfo.JClassType;
import com.google.gwt.core.ext.typeinfo.JMethod;
import com.google.gwt.core.ext.typeinfo.JType;
import com.google.gwt.user.rebind.SourceWriter;
public class MethodProperty extends Property {
private final JMethod setter;
private MethodProperty(JClassType beanType, JMethod setter) {
super(getTransportFieldName(setter), beanType, setter
.getParameterTypes()[0]);
this.setter = setter;
}
public static Collection<MethodProperty> findProperties(JClassType type) {
Collection<MethodProperty> properties = new ArrayList<MethodProperty>();
List<JMethod> setters = getSetters(type);
for (JMethod setter : setters) {
properties.add(new MethodProperty(type, setter));
}
return properties;
}
/**
* Returns a list of all setters found in the beanType or its parent class
*
* @param beanType
* The type to check
* @return A list of setter methods from the class and its parents
*/
private static List<JMethod> getSetters(JClassType beanType) {
List<JMethod> setterMethods = new ArrayList<JMethod>();
while (beanType != null
&& !beanType.getQualifiedSourceName().equals(
Object.class.getName())) {
for (JMethod method : beanType.getMethods()) {
// Process all setters that have corresponding fields
if (!method.isPublic() || method.isStatic()
|| !method.getName().startsWith("set")
|| method.getParameterTypes().length != 1) {
// Not setter, skip to next method
continue;
}
setterMethods.add(method);
}
beanType = beanType.getSuperclass();
}
return setterMethods;
}
@Override
public void writeSetterBody(TreeLogger logger, SourceWriter w,
String beanVariable, String valueVariable) {
w.print("((");
w.print(getBeanType().getQualifiedSourceName());
w.print(") ");
w.print(beanVariable);
w.print(").");
w.print(setter.getName());
w.print("((");
w.print(getUnboxedPropertyTypeName());
w.print(") ");
w.print(valueVariable);
w.println(");");
}
@Override
public void writeGetterBody(TreeLogger logger, SourceWriter w,
String beanVariable) {
w.print("return ((");
w.print(getBeanType().getQualifiedSourceName());
w.print(") ");
w.print(beanVariable);
w.print(").");
w.print(findGetter(getBeanType(), setter));
w.print("();");
}
private String findGetter(JClassType beanType, JMethod setterMethod) {
JType setterParameterType = setterMethod.getParameterTypes()[0];
String fieldName = setterMethod.getName().substring(3);
if (setterParameterType.getQualifiedSourceName().equals(
boolean.class.getName())) {
return "is" + fieldName;
} else {
return "get" + fieldName;
}
}
private static String getTransportFieldName(JMethod setter) {
String baseName = setter.getName().substring(3);
return Character.toLowerCase(baseName.charAt(0))
+ baseName.substring(1);
}
@Override
public <T extends Annotation> T getAnnotation(Class<T> annotationClass) {
return setter.getAnnotation(annotationClass);
}
}
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