示例#1
0
 @Override
 public Block getRenderingBlock(Parameters frameworkParameters) {
   HttpServletRequest request = frameworkParameters.get(Parameter.REQUEST);
   State state = State.getState(request);
   if (state.isRendering()) {
     return state.getBlock();
   } else {
     return null;
   }
 }
示例#2
0
  /**
   * Basic Framework implicitely also processes, i'm not sure if we should require any framework to
   * do that (perhaps we could say, that the render method must process, if that is necessary, and
   * not yet done).
   */
  @Override
  public void render(
      Renderer renderer,
      Parameters blockParameters,
      Parameters frameworkParameters,
      Writer w,
      WindowState windowState)
      throws FrameworkException {
    ServletRequest request = frameworkParameters.get(Parameter.REQUEST);
    if (request == null) {
      throw new IllegalArgumentException("No request object given");
    }

    State state = State.getState(request);
    if (state
        .isRendering()) { // mm:component used during rending of a component, that's fine, but use a
                          // new State.
      state = new State(request);
      log.debug("Alreadying rendering, taking a new state for sub-block-rendering: " + state);
    }

    log.debug("Rendering " + renderer.getBlock() + " " + renderer);
    Object prevHints = request.getAttribute(RenderHints.KEY);
    try {

      request.setAttribute(COMPONENT_CLASS_KEY, getComponentClass());
      request.setAttribute(COMPONENT_CURRENTUSER_KEY, getUserNode(frameworkParameters));

      Renderer actualRenderer = state.startBlock(frameworkParameters, renderer);
      if (!actualRenderer.equals(renderer)) {
        Parameters newBlockParameters = actualRenderer.getBlock().createParameters();
        newBlockParameters.setAllIfDefined(blockParameters);
        blockParameters = newBlockParameters;
      }
      state.setAction(request.getParameter(ACTION.getName()));
      if (state.needsProcess()) {
        log.service("Performing action on " + actualRenderer.getBlock());
        Processor processor = actualRenderer.getBlock().getProcessor();
        state.process(processor);
        log.service("Processing " + actualRenderer.getBlock() + " " + processor);
        setBlockParametersForProcess(state, blockParameters);
        processor.process(blockParameters);
        state.endProcess();
      }

      state.render(actualRenderer);

      setBlockParametersForRender(state, blockParameters);

      RenderHints hints =
          new RenderHints(
              actualRenderer,
              windowState,
              state.getId(),
              getComponentClass(),
              RenderHints.Mode.NORMAL);
      request.setAttribute(RenderHints.KEY, hints);
      actualRenderer.render(blockParameters, w, hints);
      request.setAttribute("org.mmbase.framework.hints", hints);
    } catch (FrameworkException fe) {
      log.debug(fe);
      URI uri = renderer.getUri();
      Renderer error =
          new ErrorRenderer(
              renderer.getType(),
              renderer.getBlock(),
              (uri != null) ? uri.toString() : null,
              500,
              fe);
      RenderHints hints =
          new RenderHints(
              error, windowState, state.getId(), getComponentClass(), RenderHints.Mode.NORMAL);
      error.render(blockParameters, w, hints);
    } finally {
      request.setAttribute(RenderHints.KEY, prevHints);
      state.endBlock();
    }
  }