// 编写处理Action事件的方法
 public void processAction(ActionEvent event) {
   // 获取当前的FacesContext对象
   FacesContext context = FacesContext.getCurrentInstance();
   // 获取JSF页面中<f:view.../>元素
   UIViewRoot viewRoot = context.getViewRoot();
   // 通过ID获取<f:view.../>内的<h:form.../>子元素。
   UIComponent comp = viewRoot.findComponent("addForm");
   // 通过ID获取<h:form.../>内的第一个<h:inputText.../>子元素。
   UIInput input = (UIInput) comp.findComponent("name");
   // 通过ID获取<h:form.../>内的第二个<h:inputText.../>子元素。
   HtmlInputText price = (HtmlInputText) comp.findComponent("price");
   if (input.getValue().equals("疯狂Java讲义")) {
     price.setSize(60);
     price.setValue("99.0元");
     price.setStyle("background-color:#9999ff;" + "font-weight:bold");
   }
 }
Beispiel #2
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 @SuppressWarnings({"UnusedDeclaration"})
 protected UIComponent findReparentedComponent(
     FaceletContext ctx, UIComponent parent, String tagId) {
   UIComponent facet = parent.getFacets().get(UIComponent.COMPOSITE_FACET_NAME);
   if (facet != null) {
     UIComponent newParent = facet.findComponent((String) parent.getAttributes().get(tagId));
     if (newParent != null) return ComponentSupport.findChildByTagId(newParent, tagId);
   }
   return null;
 }
  public static String findClientIds(String ids, UIComponent component, FacesContext context)
      throws IOException {
    if (ids == null) return null;

    StringBuilder clientIds = new StringBuilder();
    String[] idlist = ids.split("[\\s]");
    for (String id : idlist) {
      if (!id.startsWith("@")) {
        UIComponent found = component.findComponent(id);
        if (found != null) {
          if (clientIds.length() > 0) clientIds.append(" ");
          clientIds.append(found.getClientId(context));
        } else {
          throw new IOException("Cannot find id " + id + " within components NamingContainer");
        }
      }
    }

    return clientIds.toString();
  }
  @SuppressWarnings("unchecked")
  public void showCake(ActionEvent event) {
    UIComponent root = FacesContext.getCurrentInstance().getViewRoot();
    UIPanel cake = (UIPanel) root.findComponent("cake");
    cake.setRendered(true);
    List cakeParts = cake.getChildren();
    cakeParts.clear();

    HtmlGraphicImage cakeLeftSide = new HtmlGraphicImage();
    cakeLeftSide.setUrl("images/cake_left.gif");
    cakeParts.add(cakeLeftSide);

    for (int i = 0; i < userAge; i++) {
      HtmlGraphicImage candle = new HtmlGraphicImage();
      candle.setUrl("images/candle_on.gif");
      cakeParts.add(candle);
    }

    HtmlGraphicImage cakeRightSide = new HtmlGraphicImage();
    cakeRightSide.setUrl("images/cake_right.gif");
    cakeParts.add(cakeRightSide);
  }
 public void clearCake() {
   UIComponent root = FacesContext.getCurrentInstance().getViewRoot();
   UIPanel cake = (UIPanel) root.findComponent("cake");
   cake.setRendered(false);
   cake.getChildren().clear();
 }
Beispiel #6
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  public static String findClientIds(FacesContext context, UIComponent component, String list) {
    if (list == null) return "@none";

    // System.out.println("ComponentUtils.findClientIds()  component.clientId: " +
    // component.getClientId(context) + "  list: " + list);

    String[] ids = list.split("[,\\s]+");
    StringBuilder buffer = new StringBuilder();

    for (int i = 0; i < ids.length; i++) {
      if (i != 0) buffer.append(" ");
      String id = ids[i].trim();
      // System.out.println("ComponentUtils.findClientIds()    ["+i+"]  id: " + id);

      if (id.equals("@all") || id.equals("@none")) {
        // System.out.println("ComponentUtils.findClientIds()    ["+i+"]  " + id);
        buffer.append(id);
      } else if (id.equals("@this")) {
        // System.out.println("ComponentUtils.findClientIds()    ["+i+"]  @this  : " +
        // component.getClientId(context));
        buffer.append(component.getClientId(context));
      } else if (id.equals("@parent")) {
        // System.out.println("ComponentUtils.findClientIds()    ["+i+"]  @parent: " +
        // component.getParent().getClientId(context));
        buffer.append(component.getParent().getClientId(context));
      } else if (id.equals("@form")) {
        UIComponent form = ComponentUtils.findParentForm(context, component);
        if (form == null)
          throw new FacesException(
              "Component " + component.getClientId(context) + " needs to be enclosed in a form");

        buffer.append(form.getClientId(context));
      } else {
        UIComponent comp = component.findComponent(id);

        // For portlets, if the standard search doesn't work, it may be necessary to do an absolute
        // search
        // which requires including the portlet's namespace. So the resulting encoded id looks
        // something
        // like portletNamespace:container:componentId.  We make the search absolute by pre-pending
        // a leading colon (:).
        if (comp == null) {
          String encodedId = encodeNameSpace(context, id);
          if (!encodedId.startsWith(":")) {
            encodedId = ":" + encodedId;
          }
          comp = component.findComponent(encodedId);
          //                    System.out.println("ComponentUtils.findClientIds()   ["+i+"]  comp
          // : " + (comp == null ? "null" : comp.getClientId(context)) + "  id: " + encodedId);
        }

        if (comp != null) {
          buffer.append(comp.getClientId(context));
        } else {
          if (context.getApplication().getProjectStage().equals(ProjectStage.Development)) {
            logger.log(Level.INFO, "Cannot find component with identifier \"{0}\" in view.", id);
          }
          buffer.append(id);
        }
      }
    }

    return buffer.toString();
  }