package org.springframework.web.servlet.view.tiles3;
import java.util.Locale;
import java.util.Map;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.tiles.TilesContainer;
import org.apache.tiles.access.TilesAccess;
import org.apache.tiles.renderer.DefinitionRenderer;
import org.apache.tiles.request.AbstractRequest;
import org.apache.tiles.request.ApplicationContext;
import org.apache.tiles.request.Request;
import org.apache.tiles.request.render.Renderer;
import org.apache.tiles.request.servlet.ServletRequest;
import org.apache.tiles.request.servlet.ServletUtil;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import org.springframework.web.servlet.support.JstlUtils;
import org.springframework.web.servlet.support.RequestContext;
import org.springframework.web.servlet.support.RequestContextUtils;
import org.springframework.web.servlet.view.AbstractUrlBasedView;
public class TilesView extends AbstractUrlBasedView {
@Nullable
private Renderer renderer;
private boolean exposeJstlAttributes = true;
private boolean alwaysInclude = false;
@Nullable
private ApplicationContext applicationContext;
public void setRenderer(Renderer renderer) {
this.renderer = renderer;
}
protected void setExposeJstlAttributes(boolean exposeJstlAttributes) {
this.exposeJstlAttributes = exposeJstlAttributes;
}
public void setAlwaysInclude(boolean alwaysInclude) {
this.alwaysInclude = alwaysInclude;
}
@Override
public void afterPropertiesSet() throws Exception {
super.afterPropertiesSet();
ServletContext servletContext = getServletContext();
Assert.state(servletContext != null, "No ServletContext");
this.applicationContext = ServletUtil.getApplicationContext(servletContext);
if (this.renderer == null) {
TilesContainer container = TilesAccess.getContainer(this.applicationContext);
this.renderer = new DefinitionRenderer(container);
}
}
@Override
public boolean checkResource(final Locale locale) throws Exception {
Assert.state(this.renderer != null, "No Renderer set");
HttpServletRequest servletRequest = null;
RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();
if (requestAttributes instanceof ServletRequestAttributes) {
servletRequest = ((ServletRequestAttributes) requestAttributes).getRequest();
}
Request request = new ServletRequest(this.applicationContext, servletRequest, null) {
@Override
public Locale getRequestLocale() {
return locale;
}
};
return this.renderer.isRenderable(getUrl(), request);
}
@Override
protected void renderMergedOutputModel(Map<String, Object> model, HttpServletRequest request,
HttpServletResponse response) throws Exception {
Assert.state(this.renderer != null, "No Renderer set");
exposeModelAsRequestAttributes(model, request);
if (this.exposeJstlAttributes) {
JstlUtils.exposeLocalizationContext(new RequestContext(request, getServletContext()));
}
if (this.alwaysInclude) {
request.setAttribute(AbstractRequest.FORCE_INCLUDE_ATTRIBUTE_NAME, true);
}
Request tilesRequest = createTilesRequest(request, response);
this.renderer.render(getUrl(), tilesRequest);
}
protected Request createTilesRequest(final HttpServletRequest request, HttpServletResponse response) {
return new ServletRequest(this.applicationContext, request, response) {
@Override
public Locale getRequestLocale() {
return RequestContextUtils.getLocale(request);
}
};
}
}