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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.terminal;
import com.vaadin.Application;
import com.vaadin.RootRequiresMoreInformationException;
import com.vaadin.ui.UI;
public class DefaultRootProvider extends AbstractRootProvider {
@Override
public Class<? extends UI> getRootClass(Application application,
WrappedRequest request) throws RootRequiresMoreInformationException {
Object rootClassNameObj = application
.getProperty(Application.ROOT_PARAMETER);
if (rootClassNameObj instanceof String) {
String rootClassName = rootClassNameObj.toString();
ClassLoader classLoader = request.getDeploymentConfiguration()
.getClassLoader();
if (classLoader == null) {
classLoader = getClass().getClassLoader();
}
try {
Class<? extends UI> rootClass = Class.forName(rootClassName,
true, classLoader).asSubclass(UI.class);
return rootClass;
} catch (ClassNotFoundException e) {
throw new RuntimeException("Could not find root class", e);
}
}
return null;
}
}
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