Java SystemEvent类代码示例

import javax.faces.event.SystemEvent; //导入依赖的package包/类
/**
 * viewIdに対応付けられているActionListener実装クラスインスタンスを生成する.
 * <p>
 * 設定ファイル(system-event-listener.properties)で、イベント名とviewId(画面ID)
 * を組み合わせた内容が設定キーです。
 * <p>
 * 例）prerender.admin.adminHome=jp.co.opentone.bsol.mer.view.admin.AdminHomePrerenderListener
 * <p>
 * 引数prefixには上例の"prerender"に該当する文字列を指定します.
 * @param event {@link SystemEvent}
 * @param prefix 設定prefix
 * @return 生成したActionListenerインスタンス. 設定無しの場合はnull
 * @throws AbortProcessingException {@link AbortProcessingException}
 */
protected ExtendedActionListener createActionEventListener(SystemEvent event, String prefix)
    throws AbortProcessingException {
    ExtendedActionListener listener = null;

    Object source = event.getSource();
    if (source instanceof UIViewRoot) {
        UIViewRoot viewRoot = (UIViewRoot) source;
        String viewId = viewRoot.getViewId();
        if (StringUtils.isNotEmpty(viewId)) {
            // viewIdをプロパティキーに変換
            String propKey = PropertyUtil.createPropertyKeyForViewId(prefix, viewId);
            listener = createActionEventListener(propKey);
        }
    }
    return listener;
}
 

import javax.faces.event.SystemEvent; //导入依赖的package包/类
@Override
public void processEvent(SystemEvent event) throws AbortProcessingException {
    if (event instanceof PreValidateEvent) {
        UIViewRoot viewRoot = getUIViewRoot(event);
        if (null != viewRoot) {
            ActionListener listener
                = createActionEventListener(event, PROP_VALIDATOR_PREFIX);
            if (null != listener) {
                // PreValidaeEventは必要な場合だけ登録されるので、存在しない場合でも
                // エラーではありません.
                ActionEvent ae = new ActionEvent(viewRoot);
                listener.processAction(ae);
            }
        }
    }
}
 

import javax.faces.event.SystemEvent; //导入依赖的package包/类
/**
 * We get PreDestroyViewMapEvent events from the JSF servlet and destroy our
 * contextual instances. This should (theoretically!) also get fired if the
 * webapp closes, so there should be no need to manually track all view
 * scopes and destroy them at a shutdown.
 * 
 * @see javax.faces.event.SystemEventListener#processEvent(javax.faces.event.SystemEvent)
 */
@SuppressWarnings("unchecked")
@Override
public void processEvent(final SystemEvent event) {
	if (event instanceof PreDestroyViewMapEvent) {
		Map<Contextual<?>, Object> componentInstanceMap = getComponentInstanceMap();
		Map<Contextual<?>, CreationalContext<?>> creationalContextMap = getCreationalInstanceMap();

		if (componentInstanceMap != null) {
			for (Map.Entry<Contextual<?>, Object> componentEntry : componentInstanceMap.entrySet()) {
				/*
				 * No way to inform the compiler of type <T> information, so
				 * it has to be abandoned here :(
				 */
				Contextual contextual = componentEntry.getKey();
				Object instance = componentEntry.getValue();
				CreationalContext creational = creationalContextMap.get(contextual);

				contextual.destroy(instance, creational);
			}
		}
	}
}
 

import javax.faces.event.SystemEvent; //导入依赖的package包/类
public void processEvent(SystemEvent event) throws AbortProcessingException {
	if (event instanceof PostAddToViewEvent) {
		for (UIComponent child : getChildren()) {
			// Add form-label class to span children
			if (child instanceof HtmlOutputLabel) {
				HtmlOutputLabel label = (HtmlOutputLabel) child;
				label.setStyleClass(StyleClass.of("form-label").add(label.getStyleClass()).toString());
			}

			// Add label from form-element to inputs with no label and vise-versa
			else if (child instanceof UIInput) {
				String elemLabel = getLabel();
				String inputLabel = (String) child.getAttributes().get("label");
				if (elemLabel != null && inputLabel == null)
					child.getAttributes().put("label", elemLabel);
				else if (elemLabel == null && inputLabel != null)
					setLabel(inputLabel);
			}
		}
	}
}
 

import javax.faces.event.SystemEvent; //导入依赖的package包/类
/**
 * We get PreDestroyViewMapEvent events from the JSF servlet and destroy our
 * contextual instances. This should (theoretically!) also get fired if the
 * webapp closes, so there should be no need to manually track all view
 * scopes and destroy them at a shutdown.
 * 
 * @see javax.faces.event.SystemEventListener#processEvent(javax.faces.event.SystemEvent)
 */
@Override
public void processEvent(final SystemEvent event) {
	if (event instanceof PreDestroyViewMapEvent) {
		Map<Contextual<?>, Object> componentInstanceMap = getComponentInstanceMap();
		Map<Contextual<?>, CreationalContext<?>> creationalContextMap = getCreationalInstanceMap();

		if (componentInstanceMap != null) {
			for (Map.Entry<Contextual<?>, Object> componentEntry : componentInstanceMap.entrySet()) {
				/*
				 * No way to inform the compiler of type <T> information, so
				 * it has to be abandoned here :(
				 */
				Contextual contextual = componentEntry.getKey();
				Object instance = componentEntry.getValue();
				CreationalContext creational = creationalContextMap.get(contextual);

				contextual.destroy(instance, creational);
			}
		}
	}
}
 

import javax.faces.event.SystemEvent; //导入依赖的package包/类
@Override
  public void processEvent(SystemEvent event) throws AbortProcessingException 
  {
     /** UIViewRoot root = (UIViewRoot) event.getSource();
      FacesContext ctx = FacesContext.getCurrentInstance();
String path = ctx.getExternalContext().getRequestContextPath();

      ResponseWriter writer = ctx.getResponseWriter();
      
      try 
      {
      	writer = new CsapiHtmlResponseWriterImpl(((ServletResponse) ctx.getExternalContext().getResponse()).getWriter(), null, null);
      }
      catch (IOException ex) 
      {
      	ex.printStackTrace();
      }
      ctx.setResponseWriter(writer);
      **/
  }
 

import javax.faces.event.SystemEvent; //导入依赖的package包/类
@Override
public void publishEvent(FacesContext context,
                         Class<? extends SystemEvent> systemEventClass,
                         Class<?> sourceBaseType,
                         Object source)
{
  // do nothing
}
 

import javax.faces.event.SystemEvent; //导入依赖的package包/类
@Override
public void subscribeToEvent(Class<? extends SystemEvent> systemEventClass,
                             Class<?> sourceClass,
                             SystemEventListener listener)
{
  // make unit tests happy
}
 

import javax.faces.event.SystemEvent; //导入依赖的package包/类
@Override
public void unsubscribeFromEvent(Class<? extends SystemEvent> systemEventClass,
                                 Class<?> sourceClass,
                                 SystemEventListener listener)
{
  // make unit tests happy
}
 

import javax.faces.event.SystemEvent; //导入依赖的package包/类
@Override
public void subscribeToEvent(Class<? extends SystemEvent> eventClass, ComponentSystemEventListener componentListener)
{
  if (eventClass == null)
  {
      throw new NullPointerException("eventClass required");
  }
  if (componentListener == null)
  {
      throw new NullPointerException("componentListener required");
  }

  FacesBean bean = getFacesBean();

  AttachedObjects<Class<? extends SystemEvent>, SystemEventListener> eventStorage =
    (AttachedObjects<Class<? extends SystemEvent>, SystemEventListener>)bean.getProperty(_SYSTEM_EVENT_LISTENERS_KEY);

  if (eventStorage == null)
  {
    eventStorage = new AttachedObjects<Class<? extends SystemEvent>, SystemEventListener>();
    bean.setProperty(_SYSTEM_EVENT_LISTENERS_KEY, eventStorage);
  }

  if (componentListener instanceof SystemEventListener && componentListener instanceof StateHolder)
    eventStorage.addAttachedObject(eventClass, (SystemEventListener) componentListener);
  else
    eventStorage.addAttachedObject(eventClass, new ComponentSystemEventListenerWrapper(componentListener, this));
}
 

import javax.faces.event.SystemEvent; //导入依赖的package包/类
@Override
public void unsubscribeFromEvent(Class<? extends SystemEvent> eventClass,
                                 ComponentSystemEventListener componentListener)
{
  if (eventClass == null)
  {
      throw new NullPointerException("eventClass required");
  }
  if (componentListener == null)
  {
      throw new NullPointerException("componentListener required");
  }

  FacesBean bean = getFacesBean();

  AttachedObjects<Class<? extends SystemEvent>, SystemEventListener> eventStorage =
    (AttachedObjects<Class<? extends SystemEvent>, SystemEventListener>)bean.getProperty(_SYSTEM_EVENT_LISTENERS_KEY);

  if (eventStorage == null)
  {
    return;
  }

  if (componentListener instanceof SystemEventListener && componentListener instanceof StateHolder)
  {
    eventStorage.removeAttachedObject(eventClass, (SystemEventListener) componentListener);
  }
  else
  {
    // ComponentSystemEventListenerWrapper implements equals() to compare listener and component
    eventStorage.removeAttachedObject(eventClass, new ComponentSystemEventListenerWrapper(componentListener, this));
  }
}
 

import javax.faces.event.SystemEvent; //导入依赖的package包/类
@Override
public List<SystemEventListener> getListenersForEventClass(Class<? extends SystemEvent> eventClass)
{
  FacesBean bean = getFacesBean();

  AttachedObjects<Class<? extends SystemEvent>, SystemEventListener> eventStorage =
    (AttachedObjects<Class<? extends SystemEvent>, SystemEventListener>)bean.getProperty(_SYSTEM_EVENT_LISTENERS_KEY);

  if (eventStorage == null)
  {
    return Collections.emptyList();
  }

  return eventStorage.getAttachedObjectList(eventClass);
}
 

import javax.faces.event.SystemEvent; //导入依赖的package包/类
/**
 * システムイベントの発生元の{@code UIInput}でバリデーションエラーが発生していた場合、入力項目の{@code styleClass}
 * 属性に {@code inputError}を追加します。 バリデーションエラーが発生していなかった場合、入力項目の
 * {@code styleClass}属性から{@code inputError}を除去します。
 */
@Override
public void processEvent(SystemEvent event) throws AbortProcessingException {
    UIInput input = (UIInput) event.getSource();
    if (input.isValid()) {
        removeErrorStyleClass(input.getAttributes());
    } else {
        addErrorStyleClass(input.getAttributes());
    }
}
 

import javax.faces.event.SystemEvent; //导入依赖的package包/类
/**
 * SystemEventのソースがUIViewRootの場合はUIViewRootを返します.
 * @param event {@link SystemEvent}
 * @return ソースがUIViewRootの場合はUIViewRoot. そうでない場合はnull.
 */
protected UIViewRoot getUIViewRoot(SystemEvent event) {
    UIViewRoot viewRoot = null;
    Object source = event.getSource();
    if (source instanceof UIViewRoot) {
        viewRoot = (UIViewRoot) source;
    }
    return viewRoot;
}
 

import javax.faces.event.SystemEvent; //导入依赖的package包/类
/**
 * SystemEventのソースがUIViewRootの場合はviewIdを返します.
 * @param event {@link SystemEvent}
 * @return ソースがUIViewRootの場合はviewId. そうでない場合はnull.
 */
protected String getViewId(SystemEvent event) {
    String viewId = null;
    UIViewRoot viewRoot = getUIViewRoot(event);
    if (null != viewRoot) {
        viewId = viewRoot.getViewId();
    }
    return viewId;
}