001 package org.apache.myfaces.tobago.component;
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 static org.apache.myfaces.tobago.TobagoConstants.ATTR_INNER_HEIGHT;
023 import static org.apache.myfaces.tobago.TobagoConstants.ATTR_INNER_WIDTH;
024 import static org.apache.myfaces.tobago.TobagoConstants.FACET_LAYOUT;
025 import org.apache.myfaces.tobago.renderkit.LayoutRenderer;
026 import org.apache.myfaces.tobago.util.LayoutUtil;
027
028 import javax.faces.component.UIComponent;
029 import javax.faces.component.UIComponentBase;
030 import javax.faces.context.FacesContext;
031 import java.io.IOException;
032
033 public abstract class UILayout extends UIComponentBase {
034
035 private static final Log LOG = LogFactory.getLog(UILayout.class);
036
037 public void layoutBegin(FacesContext facesContext, UIComponent component) {
038 // prepare component to render
039 prepareDimension(facesContext, component);
040
041 }
042
043
044 public static void prepareDimension(FacesContext facesContext, UIComponent component) {
045 // LOG.info("prepareDimension for " + component.getClientId(facesContext) + " is " + component.getRendererType());
046 setInnerWidth(facesContext, component);
047 setInnerHeight(facesContext, component);
048 }
049
050 private static void setInnerWidth(FacesContext facesContext, UIComponent component) {
051 Integer layoutWidth = LayoutUtil.getLayoutWidth(component);
052 if (layoutWidth != null) {
053 int space = layoutWidth.intValue();
054 int innerSpace = LayoutUtil.getInnerSpace(facesContext, component, space, true);
055 component.getAttributes().put(ATTR_INNER_WIDTH, Integer.valueOf(innerSpace));
056 }
057 }
058
059 private static void setInnerHeight(FacesContext facesContext, UIComponent component) {
060 Integer layoutHeight = LayoutUtil.getLayoutHeight(component);
061 if (layoutHeight != null) {
062 int space = layoutHeight.intValue();
063 int innerSpace = LayoutUtil.getInnerSpace(facesContext, component, space, false);
064 component.getAttributes().put(ATTR_INNER_HEIGHT, Integer.valueOf(innerSpace));
065 }
066 }
067
068
069 public void encodeChildrenOfComponent(FacesContext facesContext, UIComponent component) throws IOException {
070 ((LayoutRenderer) getRenderer(facesContext)).encodeChildrenOfComponent(facesContext, component);
071 }
072
073
074 public static UILayout getLayout(UIComponent component) {
075 UILayout layout = (UILayout) component.getFacet(FACET_LAYOUT);
076 if (layout == null) {
077 if (component instanceof LayoutProvider) {
078 layout = ((LayoutProvider) component).provideLayout();
079 } else {
080 layout = UIDefaultLayout.getInstance();
081 }
082 }
083 return layout;
084 }
085 }