1 files changed, 63 insertions, 0 deletions
diff --git a/eaaf_core/src/main/java/at/gv/egiz/eaaf/core/impl/gui/interceptor/AsynchSpringMvcGuiBuilderIntercepter.java b/eaaf_core/src/main/java/at/gv/egiz/eaaf/core/impl/gui/interceptor/AsynchSpringMvcGuiBuilderIntercepter.java
new file mode 100644
index 00000000..708e3b84
--- /dev/null
+++ b/eaaf_core/src/main/java/at/gv/egiz/eaaf/core/impl/gui/interceptor/AsynchSpringMvcGuiBuilderIntercepter.java
@@ -0,0 +1,63 @@
+package at.gv.egiz.eaaf.core.impl.gui.interceptor;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.servlet.HandlerInterceptor;
+import org.springframework.web.servlet.LocaleResolver;
+import org.springframework.web.servlet.ModelAndView;
+import org.springframework.web.servlet.ViewResolver;
+
+import at.gv.egiz.eaaf.core.exceptions.GuiBuildException;
+import at.gv.egiz.eaaf.core.impl.gui.utils.MvcGuiRenderUtils;
+import lombok.extern.slf4j.Slf4j;
+
+/**
+ * Intercepter to render GUI in response processing.
+ *
+ * @author tlenz
+ *
+ */
+@Slf4j
+public class AsynchSpringMvcGuiBuilderIntercepter implements HandlerInterceptor {
+
+  private @Autowired(required = false) ViewResolver[] viewResolvers;
+  private @Autowired(required = false) LocaleResolver localeResolver;
+
+  /*
+   * (non-Javadoc)
+   *
+   * @see
+   * org.springframework.web.servlet.HandlerInterceptor#postHandle(javax.servlet.
+   * http. HttpServletRequest, javax.servlet.http.HttpServletResponse,
+   * java.lang.Object, org.springframework.web.servlet.ModelAndView)
+   */
+  @Override
+  public void postHandle(final HttpServletRequest httpReq, final HttpServletResponse httpResp,
+      final Object handler, final ModelAndView modelAndView) throws Exception {
+
+    final ModelAndView model = MvcGuiRenderUtils.getMvcForAsynchRendering(httpReq);
+    if (model != null) {
+      log.debug("Find GUI model: {} Starting model rendering ... ", model.getViewName());
+      renderGui(model, httpReq, httpResp);
+
+    } else {
+      log.trace("No GUI model skipping asynch model rendering");
+
+    }
+
+  }
+
+  private void renderGui(final ModelAndView mav,
+      final HttpServletRequest httpReq, final HttpServletResponse httpResp) throws GuiBuildException {
+    try {
+      MvcGuiRenderUtils.render(mav, httpReq, httpResp, viewResolvers, localeResolver);
+
+    } catch (final Exception e) {
+      log.info("Can NOT generate GUI for illustration", e);
+      throw new GuiBuildException(e.getMessage(), e);
+
+    }
+  }
+}