Java FacesContext類代碼示例

import javax.faces.context.FacesContext; //導入依賴的package包/類
@Override
protected Integer getDefaultColumns(
  RenderingContext rc,
  UIComponent      component,
  FacesBean        bean)
{
  Integer columnsInteger = null;

  Converter converter = getConverter(component, bean);

  // Ignoring the "default" converter code is intentional;  we'll just
  // fall through to _DEFAULT_COLUMNS here to save time
  if (converter instanceof ColorConverter)
  {
    int columns = ((ColorConverter) converter).getColumns(FacesContext.getCurrentInstance());
    columnsInteger = columns;
  }
  else
  {
    columnsInteger = _DEFAULT_COLUMNS;
  }

  return columnsInteger;
}
 

import javax.faces.context.FacesContext; //導入依賴的package包/類
public void onPoll(PollEvent event)
{
  if ( __model != null && (__model.getMaximum() <= __model.getValue()) )
  {
    //pu: This means the background task is complete.
    //  End the task and navigate off to a different page.
    endProcess();
    try
    {
      ExternalContext ec = FacesContext.getCurrentInstance().getExternalContext();
      ec.redirect("../components/progressEnd.jspx?taskStatus=completed");
    }
    catch(IOException ioe)
    {
      _LOG.log(Level.WARNING, "Could not redirect", ioe);
    }
    catch (RuntimeException re)
    {
      _LOG.log(Level.SEVERE, "Could not redirect", re);
      throw re;
    }
  }
}
 

import javax.faces.context.FacesContext; //導入依賴的package包/類
@Override
public void encodeBegin(FacesContext context) throws IOException
{
  if (context == null)
    throw new NullPointerException();

  // Call UIComponent.pushComponentToEL(javax.faces.context.FacesContext, javax.faces.component.UIComponent)
  pushComponentToEL(context, this);

  if (!isRendered())
    return;

  context.getApplication().publishEvent(context,  PreRenderComponentEvent.class, UIComponent.class, this);

  _cacheRenderer(context);
  Renderer renderer = getRenderer(context);

  // if there is a Renderer for this component
  if (renderer != null)
  {
    renderer.encodeBegin(context, this);
  }
}
 

import javax.faces.context.FacesContext; //導入依賴的package包/類
/**
 * Removes (if any) the previously added simple component change for the supplied component and 
 *  attribute 
 *  
 * @return The removed ComponentChange instance, or null if the ComponentChange was not removed
 */
private ComponentChange _removeSimpleComponentChange(
  FacesContext facesContext,
  UIComponent component,
  AttributeComponentChange componentChange)
{
  String sessionKey = _getSessionKey(facesContext);
  ChangesForView changesForView = _getChangesForView(facesContext, sessionKey, true);
  String logicalScopedId = 
    ComponentUtils.getLogicalScopedIdForComponent(component, facesContext.getViewRoot());

  // first remove from the simple component changes structure that we maintained for convenience
  changesForView.removeAttributeChange(logicalScopedId, componentChange);

  // next, remove (replace with null) any attribute change for this attribute from the global 
  //  changes list, handling the case where the component could have been moved after the 
  //  attribute change was added
  return _replaceAttributeChange(facesContext,
                                 component,
                                 componentChange.getAttributeName(),
                                 null,
                                 true);
}
 

import javax.faces.context.FacesContext; //導入依賴的package包/類
@Override
public void validate(FacesContext context, UIComponent uiComponent,
        Object input) throws ValidatorException {
    
    TenantService tenantService = serviceLocator.findService(TenantService.class);
    
    String tenantKey = input.toString();

    if (StringUtils.isBlank(tenantKey) || "0".equals(tenantKey)) {
        return;
    }

    try {
        tenantService.getTenantByKey(Long.parseLong(tenantKey));
    } catch (ObjectNotFoundException e) {

        String msg = JSFUtils
                .getText(BaseBean.ERROR_TENANT_NO_LONGER_EXISTS, null);
        FacesMessage facesMessage = new FacesMessage(
                FacesMessage.SEVERITY_ERROR, msg, null);
        throw new ValidatorException(facesMessage);
    }
}
 

import javax.faces.context.FacesContext; //導入依賴的package包/類
/**
 * Appends an image child to the panelGroup in the underlying JSP document
 */
public void appendChildToDocument(ActionEvent event)
{
  UIComponent eventSource = event.getComponent();
  UIComponent uic = eventSource.findComponent("pg1");
  
  // only allow the image to be added once
  if (_findChildById(uic,"oi3") != null)
    return;
    
  FacesContext fc = FacesContext.getCurrentInstance();

  DocumentFragment imageFragment = _createDocumentFragment(_IMAGE_MARK_UP);
  
  if (imageFragment != null)
  {
    DocumentChange change = new AddChildDocumentChange(imageFragment);
    
    ChangeManager apm = RequestContext.getCurrentInstance().getChangeManager();
    
    apm.addDocumentChange(fc, uic, change);
  }
}
 

import javax.faces.context.FacesContext; //導入依賴的package包/類
private FacesMessage _getMaximumMessage(
  FacesContext context,
  UIComponent component,
  Object value,
  Object max)
{
  Converter converter = _getConverter(context, component);

  Object cValue = _getConvertedValue(context, component, converter, value);
  Object cMax   = _getConvertedValue(context, component, converter, max);

  Object msg   = _getRawMaximumMessageDetail();
  Object label = ValidatorUtils.getComponentLabel(component);

  Object[] params = {label, cValue, cMax};

  return MessageFactory.getMessage(context,
                                   MAXIMUM_MESSAGE_ID,
                                   msg,
                                   params,
                                   component);
}
 

import javax.faces.context.FacesContext; //導入依賴的package包/類
@Override
protected boolean skipDecode(FacesContext context)
{
  // =-=AEW HACK!  When executing a "dialog return" from the filter,
  // we've generally saved off the original parameters such that
  // decoding again isn't a problem.  But we can run into some problems:
  //  (1) A component that doesn't know about ReturnEvents:  it'll
  //    decode again, thereby firing the event again that launched
  //    the dialog (and you go right back to the dialog)
  //  (2) The component does know about ReturnEvents, but
  //      someone launches a dialog in response to the ReturnEvent,
  //      after setting the value of an input field.  But since
  //      we've still saved off the original parameters,
  //      now we're back in
  // The best fix would really be somehow skipping the Apply Request
  // Values phase altogether, while still queueing the ReturnEvent
  // properly.  But how the heck is that gonna happen?
  return TrinidadFilterImpl.isExecutingDialogReturn(context);
}
 

import javax.faces.context.FacesContext; //導入依賴的package包/類
@Override
public Object call () throws Exception {
    java.lang.reflect.Method setFC = FacesContext.class.getDeclaredMethod("setCurrentInstance", FacesContext.class);
    setFC.setAccessible(true);
    ClassLoader oldTCCL = Thread.currentThread().getContextClassLoader();
    Thread.currentThread().setContextClassLoader(this.getClass().getClassLoader());
    FacesContext ctx = createMockFacesContext();
    try {
        setFC.invoke(null, ctx);
        return super.call();
    }
    finally {
        setFC.invoke(null, (FacesContext) null);
        Thread.currentThread().setContextClassLoader(oldTCCL);
    }
}
 

import javax.faces.context.FacesContext; //導入依賴的package包/類
@Override
public Object saveState(FacesContext context)
{
  RowKeySet rowKeys = (RowKeySet)super.getProperty(DISCLOSED_ROW_KEYS_KEY);
  if (rowKeys != null)
  {
    // make sure the set does not pin the model in memory
    rowKeys.setCollectionModel(null);
  }
  rowKeys = (RowKeySet)super.getProperty(SELECTED_ROW_KEYS_KEY);
  if (rowKeys != null)
  {
    // make sure the set does not pin the model in memory
    rowKeys.setCollectionModel(null);
  }
  return super.saveState(context);
}
 

import javax.faces.context.FacesContext; //導入依賴的package包/類
@Override
public String getAsString(FacesContext context, UIComponent component, Object object) {
    if (object == null) {
        return "";
    }
    
    Guardian guardian = (Guardian) object;
    Long id = guardian.getId();
    if (id != null) {
        String stringId = String.valueOf(id.longValue());
        this.getViewMap(context).put(stringId, object);
        return stringId;
    } else {
        return "0";
    }
}
 

import javax.faces.context.FacesContext; //導入依賴的package包/類
/**
 * Gets the client-id of this component, without any NamingContainers.
 * This id changes depending on the currency Object.
 * Because this implementation uses currency strings, the local client ID is
 * not stable for very long. Its lifetime is the same as that of a
 * currency string.
 * @see #getCurrencyString
 * @return the local clientId
 */
@Override
public final String getContainerClientId(FacesContext context)
{
  String id = getClientId(context);
  String key = getCurrencyString();
  if (key != null)
  {
    StringBuilder bld = __getSharedStringBuilder();
    bld.append(id).append(NamingContainer.SEPARATOR_CHAR).append(key);
    id = bld.toString();
  }

  return id;
}
 

import javax.faces.context.FacesContext; //導入依賴的package包/類
public void treeToTable()
/*     */   {
/*  77 */     Map params = FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap();
/*  78 */     String property = (String)params.get("property");
/*  79 */     String droppedColumnId = (String)params.get("droppedColumnId");
/*  80 */     String dropPos = (String)params.get("dropPos");
/*     */ 
/*  82 */     String[] droppedColumnTokens = droppedColumnId.split(":");
/*  83 */     int draggedColumnIndex = Integer.parseInt(droppedColumnTokens[(droppedColumnTokens.length - 1)]);
/*  84 */     int dropColumnIndex = draggedColumnIndex + Integer.parseInt(dropPos);
/*     */ 
/*  87 */     this.columns.add(dropColumnIndex, new ColumnModel(property.toUpperCase(), property));
/*     */ 
/*  90 */     TreeNode root = (TreeNode)this.availableColumns.getChildren().get(0);
/*  91 */     for (TreeNode node : root.getChildren()) {
/*  92 */       ColumnModel model = (ColumnModel)node.getData();
/*  93 */       if (model.getProperty().equals(property)) {
/*  94 */         root.getChildren().remove(node);
/*  95 */         break;
/*     */       }
/*     */     }
/*     */   }
 

import javax.faces.context.FacesContext; //導入依賴的package包/類
/**
 */
protected void renderShortDescAsHiddenLabel(
  FacesContext     context,
  RenderingContext rc,
  UIComponent      component,
  FacesBean        bean
  ) throws IOException
{
  if (HiddenLabelUtils.supportsHiddenLabels(rc) &&
      isHiddenLabelRequired(rc))
  {
    String clientId = getClientId(context, component);
    if (HiddenLabelUtils.wantsHiddenLabel(rc, clientId))
    {
      String hiddenLabel = getHiddenLabel(component, bean);
      if (hiddenLabel != null)
      {
        HiddenLabelUtils.outputHiddenLabel(context,
                                           rc,
                                           clientId,
                                           hiddenLabel,
                                           component);
      }
    }
  }
}
 

import javax.faces.context.FacesContext; //導入依賴的package包/類
/**
 * Coerces an object into an action URI, calling the view-handler.
 */
static public String toActionUri(FacesContext fc, Object o)
{
  if (o == null)
    return null;

  String uri = o.toString();

  // Treat two slashes as server-relative
  if (uri.startsWith("//"))
  {
    return uri.substring(1);
  }
  else
  {
    return fc.getApplication().getViewHandler().getActionURL(fc, uri);
  }
}