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 /* 023 * Created 09.03.2004 12:26:39. 024 * $Id: BoxRendererBase.java 1368577 2012-08-02 16:20:31Z lofwyr $ 025 */ 026 027 028 import org.apache.commons.logging.Log; 029 import org.apache.commons.logging.LogFactory; 030 import static org.apache.myfaces.tobago.TobagoConstants.ATTR_HEIGHT; 031 import org.apache.myfaces.tobago.component.ComponentUtil; 032 import org.apache.myfaces.tobago.component.UILayout; 033 import org.apache.myfaces.tobago.util.LayoutUtil; 034 035 import javax.faces.component.UIComponent; 036 import javax.faces.context.FacesContext; 037 038 public abstract class BoxRendererBase extends LayoutableRendererBase { 039 040 private static final Log LOG = LogFactory.getLog(BoxRendererBase.class); 041 042 public boolean getRendersChildren() { 043 return true; 044 } 045 046 public int getFixedHeight(FacesContext facesContext, UIComponent component) { 047 048 int height = 049 ComponentUtil.getIntAttribute(component, ATTR_HEIGHT, -1); 050 if (height != -1) { 051 return height; 052 } 053 054 // ask layoutManager 055 UIComponent layout = UILayout.getLayout(component); 056 if (layout != null) { 057 LayoutInformationProvider renderer = ComponentUtil.getRenderer(facesContext, layout); 058 height = renderer.getFixedHeight(facesContext, component); 059 if (height > -1) { 060 return height; 061 } 062 } 063 064 if (LOG.isInfoEnabled()) { 065 LOG.info("Can't calculate fixedHeight! " 066 + "using estimation by contained components. "); 067 } 068 069 height = LayoutUtil.calculateFixedHeightForChildren(facesContext, component); 070 height += getHeaderHeight(facesContext, component); 071 height += getPaddingHeight(facesContext, component); 072 return height; 073 } 074 075 }