package org.apache.myfaces.tobago.internal.taglib.extension;
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import org.apache.myfaces.tobago.apt.annotation.ExtensionTag;
import org.apache.myfaces.tobago.apt.annotation.Tag;
import org.apache.myfaces.tobago.component.Facets;
import org.apache.myfaces.tobago.internal.layout.LayoutUtils;
import org.apache.myfaces.tobago.internal.taglib.GridLayoutTag;
import org.apache.myfaces.tobago.internal.taglib.LabelTag;
import org.apache.myfaces.tobago.internal.taglib.PanelTag;
import org.apache.myfaces.tobago.internal.taglib.declaration.HasLabelWidth;
import org.apache.myfaces.tobago.internal.taglib.declaration.HasTip;
import org.apache.myfaces.tobago.internal.taglib.declaration.HasValue;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.faces.webapp.FacetTag;
import javax.faces.webapp.UIComponentTag;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.BodyTagSupport;
/**
* Renders a label to any component.
* <br />
* Short syntax of:
* <br />
* <pre>
* <tc:panel>
* <f:facet name="layout">
* <tc:gridLayout columns="auto;*"/>
* </f:facet>
* <tc:label value="#{label}" for="@auto"/>
* ...
* </tc:panel>
* </pre>
* This is the universal version of the special versions: <tx:in>, etc.
* In other words:
* <pre>
* <tx:label>
* <tc:in/>
* </tx:label>
* </pre>
* does the same like
* <pre>
* <tx:in/>
* </pre>
*/
@Tag(name = "label")
@ExtensionTag(baseClassName = "org.apache.myfaces.tobago.internal.taglib.LabelTag")
public class LabelExtensionTag extends BodyTagSupport
implements HasValue, HasLabelWidth, HasTip {
private static final Logger LOG = LoggerFactory.getLogger(LabelExtensionTag.class);
public static final String DEFAULT_COLUMNS = "auto;*";
private String value;
private String tip;
private String rendered;
private String columns = DEFAULT_COLUMNS;
private String rows = "auto";
private String labelWidth;
private String markup;
private PanelTag panelTag;
@Override
public int doStartTag() throws JspException {
panelTag = new PanelTag();
panelTag.setPageContext(pageContext);
panelTag.setParent(getParent());
if (rendered != null) {
panelTag.setRendered(rendered);
}
if (tip != null) {
panelTag.setTip(tip);
}
if (id != null) {
panelTag.setId(id);
}
panelTag.doStartTag();
FacetTag facetTag = new FacetTag();
facetTag.setPageContext(pageContext);
facetTag.setName(Facets.LAYOUT);
facetTag.setParent(panelTag);
facetTag.doStartTag();
if (labelWidth != null) {
setColumns(labelWidth + ";*");
}
GridLayoutTag gridLayoutTag = new GridLayoutTag();
gridLayoutTag.setPageContext(pageContext);
gridLayoutTag.setColumns(columns);
gridLayoutTag.setRows(rows);
gridLayoutTag.setParent(facetTag);
gridLayoutTag.doStartTag();
gridLayoutTag.doEndTag();
facetTag.doEndTag();
LabelTag labelTag = new LabelTag();
labelTag.setPageContext(pageContext);
if (value != null) {
labelTag.setValue(value);
}
if (markup != null) {
labelTag.setMarkup(markup);
}
labelTag.setFor("@auto");
labelTag.setParent(panelTag);
labelTag.doStartTag();
labelTag.doEndTag();
return super.doStartTag();
}
@Override
public int doEndTag() throws JspException {
panelTag.doEndTag();
return super.doEndTag();
}
@Override
public void release() {
super.release();
value = null;
tip = null;
rendered = null;
columns = DEFAULT_COLUMNS;
rows = "auto";
panelTag = null;
labelWidth = null;
markup = null;
}
public void setValue(String value) {
this.value = value;
}
public void setTip(String tip) {
this.tip = tip;
}
public void setRendered(String rendered) {
this.rendered = rendered;
}
void setColumns(String columns) {
if (!(UIComponentTag.isValueReference(columns) || LayoutUtils.checkTokens(columns))) {
LOG.warn("Illegal value for columns = \"" + columns + "\" replacing with default: \"" + DEFAULT_COLUMNS + "\"");
this.columns = DEFAULT_COLUMNS;
} else {
this.columns = columns;
}
}
void setRows(String rows) {
this.rows = rows;
}
public void setLabelWidth(String labelWidth) {
this.labelWidth = labelWidth;
}
public void setMarkup(String markup) {
this.markup = markup;
}
}