dk.teachus.frontend.models.ApplicationConfigurationModel.java Source code

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Here is the source code for dk.teachus.frontend.models.ApplicationConfigurationModel.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 dk.teachus.frontend.models;

import org.apache.wicket.model.IModel;
import org.apache.wicket.util.string.Strings;

import dk.teachus.frontend.TeachUsApplication;

public class ApplicationConfigurationModel<T> implements IModel<T> {
    private static final long serialVersionUID = 1L;

    private String configurationKey;

    public ApplicationConfigurationModel(String configurationKey) {
        if (Strings.isEmpty(configurationKey)) {
            throw new IllegalArgumentException("Configuration key must not be null.");
        }

        this.configurationKey = configurationKey;
    }

    public T getObject() {
        return convertConfigurationValue(
                TeachUsApplication.get().getConfiguration().getConfiguration(configurationKey));
    }

    @SuppressWarnings("unchecked")
    protected T convertConfigurationValue(String configurationValue) {
        return (T) configurationValue;
    }

    public void setObject(T object) {
        TeachUsApplication.get().getConfiguration().setConfiguration(configurationKey, convertModelValue(object));
    }

    protected String convertModelValue(T modelValue) {
        return String.valueOf(modelValue);
    }

    public void detach() {
    }

}