nz.net.ultraq.thymeleaf.decorators.html.HtmlBodyDecorator.groovy Maven / Gradle / Ivy
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A dialect for Thymeleaf that allows you to use layout/decorator templates to style your content.
/*
* Copyright 2013, Emanuel Rabina (http://www.ultraq.net.nz/)
*
* 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 nz.net.ultraq.thymeleaf.decorators.html
import nz.net.ultraq.thymeleaf.decorators.Decorator
import nz.net.ultraq.thymeleaf.models.AttributeMerger
import org.thymeleaf.context.ITemplateContext
import org.thymeleaf.model.IModel
/**
* A decorator specific to processing an HTML {@code } element.
*
* @author Emanuel Rabina
*/
class HtmlBodyDecorator implements Decorator {
private final ITemplateContext context
/**
* Constructor, sets up the element decorator context.
*
* @param context
*/
HtmlBodyDecorator(ITemplateContext context) {
this.context = context
}
/**
* Decorate the {@code } part.
*
* @param targetBodyModel
* @param sourceBodyModel
* @return Result of the decoration.
*/
@Override
IModel decorate(IModel targetBodyModel, IModel sourceBodyModel) {
// If one of the parameters is missing return a copy of the other, or
// nothing if both parameters are missing.
if (!targetBodyModel || !sourceBodyModel) {
return targetBodyModel?.cloneModel() ?: sourceBodyModel?.cloneModel()
}
return new AttributeMerger(context).merge(targetBodyModel, sourceBodyModel)
}
}