001    package org.apache.myfaces.tobago.taglib.extension;
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    
023    import static org.apache.myfaces.tobago.TobagoConstants.FACET_LAYOUT;
024    import org.apache.myfaces.tobago.apt.annotation.ExtensionTag;
025    import org.apache.myfaces.tobago.apt.annotation.Tag;
026    import org.apache.myfaces.tobago.taglib.component.GridLayoutTag;
027    import org.apache.myfaces.tobago.taglib.component.LabelTag;
028    import org.apache.myfaces.tobago.taglib.component.PanelTag;
029    import org.apache.myfaces.tobago.taglib.decl.HasTip;
030    import org.apache.myfaces.tobago.taglib.decl.HasValue;
031    import org.apache.myfaces.tobago.util.LayoutUtil;
032    
033    import javax.faces.webapp.FacetTag;
034    import javax.servlet.jsp.JspException;
035    import javax.servlet.jsp.tagext.BodyTagSupport;
036    
037    @Tag(name = "label")
038    @ExtensionTag(baseClassName = "org.apache.myfaces.tobago.taglib.component.LabelTag")
039    public class LabelExtensionTag extends BodyTagSupport
040        implements HasValue, HasTip {
041    
042      private static final Log LOG = LogFactory.getLog(LabelExtensionTag.class);
043    
044      public static final String DEFAULT_COLUMNS = "fixed;*";
045    
046      private String value;
047      private String tip;
048      private String rendered;
049      private String columns = DEFAULT_COLUMNS;
050      private String rows = "fixed";
051    
052      private PanelTag panelTag;
053    
054      @Override
055      public int doStartTag() throws JspException {
056    
057        panelTag = new PanelTag();
058        panelTag.setPageContext(pageContext);
059        panelTag.setParent(getParent());
060        if (rendered != null) {
061          panelTag.setRendered(rendered);
062        }
063        panelTag.doStartTag();
064    
065        FacetTag facetTag = new FacetTag();
066        facetTag.setPageContext(pageContext);
067        facetTag.setName(FACET_LAYOUT);
068        facetTag.setParent(panelTag);
069        facetTag.doStartTag();
070    
071        GridLayoutTag gridLayoutTag = new GridLayoutTag();
072        gridLayoutTag.setPageContext(pageContext);
073        gridLayoutTag.setColumns(columns);
074        gridLayoutTag.setRows(rows);
075        gridLayoutTag.setParent(facetTag);
076        gridLayoutTag.doStartTag();
077        gridLayoutTag.doEndTag();
078    
079        facetTag.doEndTag();
080    
081        LabelTag labelTag = new LabelTag();
082        labelTag.setPageContext(pageContext);
083        if (value != null) {
084          labelTag.setValue(value);
085        }
086        if (tip != null) {
087          labelTag.setTip(tip);
088        }
089        labelTag.setFor("@auto");
090        labelTag.setParent(panelTag);
091        labelTag.doStartTag();
092        labelTag.doEndTag();
093    
094        return super.doStartTag();
095      }
096    
097      @Override
098      public int doEndTag() throws JspException {
099        panelTag.doEndTag();
100        return super.doEndTag();
101      }
102    
103      @Override
104      public void release() {
105        super.release();
106        value = null;
107        tip = null;
108        rendered = null;
109        columns = DEFAULT_COLUMNS;
110        rows = "fixed";
111        panelTag = null;
112      }
113    
114      public void setValue(String value) {
115        this.value = value;
116      }
117    
118      public void setTip(String tip) {
119        this.tip = tip;
120      }
121    
122      public void setRendered(String rendered) {
123        this.rendered = rendered;
124      }
125    
126      void setColumns(String columns) {
127        if (!LayoutUtil.checkTokens(columns)) {
128          LOG.warn("Illegal value for columns = \"" + columns + "\" replacing with default: \"" + DEFAULT_COLUMNS + "\"");
129          this.columns = DEFAULT_COLUMNS;
130        } else {
131          this.columns = columns;
132        }
133      }
134    
135      void setRows(String rows) {
136        this.rows = rows;
137      }
138    }