package org.rendersnake.ext.spring;
import java.util.Locale;
import org.rendersnake.Renderable;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.web.servlet.View;
import org.springframework.web.servlet.ViewResolver;
/**
* RenderableViewResolver is a view resolver that does a lookup for
* a Renderable component in the application context.
* If such a component is found then create a new RenderableView to
* perform the actual rendering on a HtmlCanvas.
* <p/>
* Usage in servlet-config.xml
* <p>
* {@code
* <bean class="org.rendersnake.ext.spring.RenderableViewResolver" />
* }
* </p>
*
* @author e.micklei
*/
public class RenderableViewResolver implements ViewResolver, ApplicationContextAware {
private ApplicationContext appCtx;
private String contentType = "text/html; charset=UTF-8";
/**
* Find the Renderable component in the application context.
* Return a RenderableView on that component or null if no bean is found.
*
* @throws Exception
* @return a RenderableView | null
*/
public View resolveViewName(String viewName, Locale locale) throws Exception {
final Renderable component = appCtx.getBean(viewName, Renderable.class);
if (component == null) return null;
return new RenderableView(component, this.contentType);
}
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
this.appCtx = applicationContext;
}
public void setContentType(String contentType) {
this.contentType = contentType;
}
}