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Vaadin is a web application framework for Rich Internet Applications (RIA). Vaadin enables easy development and maintenance of fast and secure rich web applications with a stunning look and feel and a wide browser support. It features a server-side architecture with the majority of the logic running on the server. Ajax technology is used at the browser-side to ensure a rich and interactive user experience.

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/*
 * 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 java.lang.annotation.Annotation;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.typeinfo.JClassType;
import com.google.gwt.core.ext.typeinfo.JField;
import com.google.gwt.user.rebind.SourceWriter;

public class FieldProperty extends Property {

    private final JField field;

    private FieldProperty(JClassType beanType, JField field) {
        super(field.getName(), beanType, field.getType());
        this.field = field;
    }

    @Override
    public boolean hasAccessorMethods() {
        return true;
    }

    @Override
    public void writeSetterBody(TreeLogger logger, SourceWriter w,
            String beanVariable, String valueVariable) {
        w.println("%s.@%s::%s = %s;", beanVariable, getBeanType()
                .getQualifiedSourceName(), getName(), unboxValue(valueVariable));
    }

    @Override
    public void writeGetterBody(TreeLogger logger, SourceWriter w,
            String beanVariable) {
        String value = String.format("%s.@%s::%s", beanVariable, getBeanType()
                .getQualifiedSourceName(), getName());
        w.print("return ");
        w.print(boxValue(value));
        w.println(";");
    }

    public static Collection findProperties(JClassType type) {
        Collection properties = new ArrayList();

        List fields = getPublicFields(type);
        for (JField field : fields) {
            properties.add(new FieldProperty(field.getEnclosingType(), field));
        }

        return properties;
    }

    private static List getPublicFields(JClassType type) {
        Set names = new HashSet();
        ArrayList fields = new ArrayList();
        for (JClassType subType : type.getFlattenedSupertypeHierarchy()) {
            JField[] subFields = subType.getFields();
            for (JField field : subFields) {
                if (field.isPublic() && !field.isStatic()
                        && names.add(field.getName())) {
                    fields.add(field);
                }
            }
        }
        return fields;
    }

    @Override
    public  T getAnnotation(Class annotationClass) {
        return field.getAnnotation(annotationClass);
    }

}