Пример #1
0
  protected void addViewParameters(
      FacesContext ctx, String viewId, Map<String, List<String>> existingParameters) {

    UIViewRoot currentRoot = ctx.getViewRoot();
    String currentViewId = currentRoot.getViewId();
    Collection<UIViewParameter> toViewParams;
    Collection<UIViewParameter> currentViewParams;
    boolean currentIsSameAsNew = false;
    currentViewParams = ViewMetadata.getViewParameters(currentRoot);

    if (currentViewId.equals(viewId)) {
      currentIsSameAsNew = true;
      toViewParams = currentViewParams;
    } else {
      ViewDeclarationLanguage pdl = getViewDeclarationLanguage(ctx, viewId);
      ViewMetadata viewMetadata = pdl.getViewMetadata(ctx, viewId);
      UIViewRoot root = viewMetadata.createMetadataView(ctx);
      toViewParams = ViewMetadata.getViewParameters(root);
    }

    if (toViewParams.isEmpty()) {
      return;
    }

    for (UIViewParameter viewParam : toViewParams) {
      String value;
      // don't bother looking at view parameter if it's been overridden
      if (existingParameters.containsKey(viewParam.getName())) {
        continue;
      } else if (paramHasValueExpression(viewParam)) {
        value = viewParam.getStringValueFromModel(ctx);
      } else {
        // Anonymous view parameter:
        // Get string value from UIViewParameter instance stored in current view
        if (currentIsSameAsNew) {
          value = viewParam.getStringValue(ctx);
        }
        // ...or transfer string value from matching UIViewParameter instance stored in current view
        else {
          value = getStringValueToTransfer(ctx, viewParam, currentViewParams);
        }
      }
      if (value != null) {
        List<String> existing = existingParameters.get(viewParam.getName());
        if (existing == null) {
          existing = new ArrayList<String>(4);
          existingParameters.put(viewParam.getName(), existing);
        }
        existing.add(value);
      }
    }
  }
Пример #2
0
  /**
   * PRECONDITION: the necessary factories have been installed in the ServletContext attr set.
   *
   * <p>
   *
   * <p>POSTCONDITION: The facesContext has been initialized with a tree.
   */
  public void execute(FacesContext facesContext) throws FacesException {

    if (LOGGER.isLoggable(Level.FINE)) {
      LOGGER.fine("Entering RestoreViewPhase");
    }
    if (null == facesContext) {
      throw new FacesException(
          MessageUtils.getExceptionMessageString(MessageUtils.NULL_CONTEXT_ERROR_MESSAGE_ID));
    }

    // If an app had explicitely set the tree in the context, use that;
    //
    UIViewRoot viewRoot = facesContext.getViewRoot();
    if (viewRoot != null) {
      if (LOGGER.isLoggable(Level.FINE)) {
        LOGGER.fine("Found a pre created view in FacesContext");
      }
      facesContext.getViewRoot().setLocale(facesContext.getExternalContext().getRequestLocale());

      // do per-component actions
      UIViewRoot root = facesContext.getViewRoot();
      final PostRestoreStateEvent event = new PostRestoreStateEvent(root);
      try {
        root.visitTree(
            VisitContext.createVisitContext(facesContext),
            new VisitCallback() {

              public VisitResult visit(VisitContext context, UIComponent target) {
                event.setComponent(target);
                target.processEvent(event);
                return VisitResult.ACCEPT;
              }
            });
      } catch (AbortProcessingException e) {
        facesContext
            .getApplication()
            .publishEvent(
                ExceptionQueuedEvent.class, new ExceptionQueuedEventContext(facesContext, e));
      }

      if (!facesContext.isPostback()) {
        facesContext.renderResponse();
      }
      return;
    }

    // Reconstitute or create the request tree
    Map requestMap = facesContext.getExternalContext().getRequestMap();
    String viewId = (String) requestMap.get("javax.servlet.include.path_info");
    if (viewId == null) {
      viewId = facesContext.getExternalContext().getRequestPathInfo();
    }

    // It could be that this request was mapped using
    // a prefix mapping in which case there would be no
    // path_info.  Query the servlet path.
    if (viewId == null) {
      viewId = (String) requestMap.get("javax.servlet.include.servlet_path");
    }

    if (viewId == null) {
      viewId = facesContext.getExternalContext().getRequestServletPath();
    }

    if (viewId == null) {
      if (LOGGER.isLoggable(Level.WARNING)) {
        LOGGER.warning("viewId is null");
      }
      throw new FacesException(
          MessageUtils.getExceptionMessageString(MessageUtils.NULL_REQUEST_VIEW_ERROR_MESSAGE_ID));
    }

    ViewHandler viewHandler = Util.getViewHandler(facesContext);

    boolean isPostBack = (facesContext.isPostback() && !isErrorPage(facesContext));
    if (isPostBack) {
      // try to restore the view
      viewRoot = viewHandler.restoreView(facesContext, viewId);
      if (viewRoot == null) {
        if (is11CompatEnabled(facesContext)) {
          // 1.1 -> create a new view and flag that the response should
          //        be immediately rendered
          if (LOGGER.isLoggable(Level.FINE)) {
            LOGGER.fine("Postback: recreating a view for " + viewId);
          }
          viewRoot = viewHandler.createView(facesContext, viewId);
          facesContext.renderResponse();

        } else {
          Object[] params = {viewId};
          throw new ViewExpiredException(
              MessageUtils.getExceptionMessageString(
                  MessageUtils.RESTORE_VIEW_ERROR_MESSAGE_ID, params),
              viewId);
        }
      }

      facesContext.setViewRoot(viewRoot);

      if (LOGGER.isLoggable(Level.FINE)) {
        LOGGER.fine("Postback: restored view for " + viewId);
      }
    } else {
      if (LOGGER.isLoggable(Level.FINE)) {
        LOGGER.fine("New request: creating a view for " + viewId);
      }

      ViewDeclarationLanguage vdl =
          facesContext
              .getApplication()
              .getViewHandler()
              .getViewDeclarationLanguage(facesContext, viewId);

      if (vdl != null) {
        // If we have one, get the ViewMetadata...
        ViewMetadata metadata = vdl.getViewMetadata(facesContext, viewId);

        if (metadata != null) { // perhaps it's not supported
          // and use it to create the ViewRoot.  This will have, at most
          // the UIViewRoot and its metadata facet.
          viewRoot = metadata.createMetadataView(facesContext);

          // Only skip to render response if there are no view parameters
          Collection<UIViewParameter> params = ViewMetadata.getViewParameters(viewRoot);
          if (params.isEmpty()) {
            facesContext.renderResponse();
          }
        }
      } else {
        facesContext.renderResponse();
      }

      if (null == viewRoot) {
        viewRoot = (Util.getViewHandler(facesContext)).createView(facesContext, viewId);
      }
      facesContext.setViewRoot(viewRoot);
      assert (null != viewRoot);
      facesContext.getApplication().publishEvent(PostAddToViewEvent.class, viewRoot);
    }

    if (LOGGER.isLoggable(Level.FINE)) {
      LOGGER.fine("Exiting RestoreViewPhase");
    }
  }
Пример #3
0
  /**
   * PRECONDITION: the necessary factories have been installed in the ServletContext attr set.
   *
   * <p>
   *
   * <p>POSTCONDITION: The facesContext has been initialized with a tree.
   */
  public void execute(FacesContext facesContext) throws FacesException {

    if (LOGGER.isLoggable(Level.FINE)) {
      LOGGER.fine("Entering RestoreViewPhase");
    }
    if (null == facesContext) {
      throw new FacesException(
          MessageUtils.getExceptionMessageString(MessageUtils.NULL_CONTEXT_ERROR_MESSAGE_ID));
    }

    // If an app had explicitely set the tree in the context, use that;
    //
    UIViewRoot viewRoot = facesContext.getViewRoot();
    if (viewRoot != null) {
      if (LOGGER.isLoggable(Level.FINE)) {
        LOGGER.fine("Found a pre created view in FacesContext");
      }
      facesContext.getViewRoot().setLocale(facesContext.getExternalContext().getRequestLocale());

      // do per-component actions
      deliverPostRestoreStateEvent(facesContext);

      if (!facesContext.isPostback()) {
        facesContext.renderResponse();
      }
      return;
    }
    FacesException thrownException = null;

    try {

      // Reconstitute or create the request tree
      Map requestMap = facesContext.getExternalContext().getRequestMap();
      String viewId = (String) requestMap.get("javax.servlet.include.path_info");
      if (viewId == null) {
        viewId = facesContext.getExternalContext().getRequestPathInfo();
      }

      // It could be that this request was mapped using
      // a prefix mapping in which case there would be no
      // path_info.  Query the servlet path.
      if (viewId == null) {
        viewId = (String) requestMap.get("javax.servlet.include.servlet_path");
      }

      if (viewId == null) {
        viewId = facesContext.getExternalContext().getRequestServletPath();
      }

      if (viewId == null) {
        throw new FacesException(
            MessageUtils.getExceptionMessageString(
                MessageUtils.NULL_REQUEST_VIEW_ERROR_MESSAGE_ID));
      }

      ViewHandler viewHandler = Util.getViewHandler(facesContext);

      boolean isPostBack = (facesContext.isPostback() && !isErrorPage(facesContext));
      if (isPostBack) {
        if (isCSRFOptionEnabled(facesContext)) {
          String convertedViewId = viewHandler.deriveViewId(facesContext, viewId);
          if (!TokenHelper.verifyToken(facesContext, convertedViewId)) {
            throw new FacesException("Token verification failed.");
          }
        }
        facesContext.setProcessingEvents(false);
        // try to restore the view
        viewRoot = viewHandler.restoreView(facesContext, viewId);
        if (viewRoot == null) {
          if (is11CompatEnabled(facesContext)) {
            // 1.1 -> create a new view and flag that the response should
            //        be immediately rendered
            if (LOGGER.isLoggable(Level.FINE)) {
              LOGGER.fine("Postback: recreating a view for " + viewId);
            }
            viewRoot = viewHandler.createView(facesContext, viewId);
            facesContext.renderResponse();

          } else {
            Object[] params = {viewId};
            throw new ViewExpiredException(
                MessageUtils.getExceptionMessageString(
                    MessageUtils.RESTORE_VIEW_ERROR_MESSAGE_ID, params),
                viewId);
          }
        }

        facesContext.setViewRoot(viewRoot);
        facesContext.setProcessingEvents(true);
        if (LOGGER.isLoggable(Level.FINE)) {
          LOGGER.fine("Postback: restored view for " + viewId);
        }
      } else {
        if (LOGGER.isLoggable(Level.FINE)) {
          LOGGER.fine("New request: creating a view for " + viewId);
        }

        ViewDeclarationLanguage vdl =
            facesContext
                .getApplication()
                .getViewHandler()
                .getViewDeclarationLanguage(facesContext, viewId);

        if (vdl != null) {
          // If we have one, get the ViewMetadata...
          ViewMetadata metadata = vdl.getViewMetadata(facesContext, viewId);

          if (metadata != null) { // perhaps it's not supported
            // and use it to create the ViewRoot.  This will have, at most
            // the UIViewRoot and its metadata facet.
            viewRoot = metadata.createMetadataView(facesContext);

            // Only skip to render response if there are no view parameters
            Collection<UIViewParameter> params = ViewMetadata.getViewParameters(viewRoot);
            if (params.isEmpty()) {
              facesContext.renderResponse();
            }
          }
        } else {
          facesContext.renderResponse();
        }

        if (null == viewRoot) {
          viewRoot = (Util.getViewHandler(facesContext)).createView(facesContext, viewId);
        }
        facesContext.setViewRoot(viewRoot);
        assert (null != viewRoot);
      }
    } catch (FacesException fe) {
      thrownException = fe;
    } finally {
      if (null == thrownException) {
        deliverPostRestoreStateEvent(facesContext);
      } else {
        throw thrownException;
      }
    }

    if (LOGGER.isLoggable(Level.FINE)) {
      LOGGER.fine("Exiting RestoreViewPhase");
    }
  }