001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019 020 package org.apache.myfaces.tobago.renderkit; 021 022 import org.apache.commons.logging.Log; 023 import org.apache.commons.logging.LogFactory; 024 import org.apache.myfaces.tobago.component.ComponentUtil; 025 import org.apache.myfaces.tobago.util.LayoutUtil; 026 027 import javax.faces.component.UIComponent; 028 import javax.faces.context.FacesContext; 029 import java.io.IOException; 030 031 032 /* 033 * User: weber 034 * Date: Feb 22, 2005 035 * Time: 3:05:58 PM 036 */ 037 public abstract class LayoutRenderer extends LayoutableRendererBase { 038 039 private static final Log LOG = LogFactory.getLog(LayoutRenderer.class); 040 041 public abstract void prepareRender(FacesContext facesContext, UIComponent component); 042 043 044 public void encodeChildrenOfComponent(FacesContext facesContext, UIComponent component) 045 throws IOException { 046 // use renderer of component 047 LayoutableRendererBase renderer = ComponentUtil.getRenderer(facesContext, component); 048 renderer.encodeChildren(facesContext, component); 049 } 050 051 @Override 052 public int getFixedHeight(FacesContext facesContext, UIComponent component) { 053 int height = 0; 054 055 if (LOG.isInfoEnabled() && component.getChildCount() > 1) { 056 LOG.info("Can't calculate fixedHeight! " 057 + "using estimation by contained components. "); 058 } 059 height += LayoutUtil.calculateFixedHeightForChildren(facesContext, component); 060 061 LayoutInformationProvider containerRenderer = 062 ComponentUtil.getRenderer(facesContext, component); 063 if (containerRenderer != null) { 064 height += containerRenderer.getHeaderHeight(facesContext, component); 065 height += containerRenderer.getPaddingHeight(facesContext, component); 066 } 067 068 return height; 069 } 070 071 }