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