/*
* 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.
*/
package org.apache.empire.jsf2.components;
import java.io.IOException;
import javax.faces.component.UIOutput;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.apache.empire.commons.ObjectUtils;
import org.apache.empire.commons.StringUtils;
import org.apache.empire.data.DataType;
import org.apache.empire.jsf2.controls.InputControl;
import org.apache.empire.jsf2.utils.TagEncodingHelper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ValueTag extends UIOutput // implements NamingContainer
{
// Logger
private static final Logger log = LoggerFactory.getLogger(ValueTag.class);
private TagEncodingHelper helper = new TagEncodingHelper(this, "eVal");
public ValueTag()
{
log.trace("component value created");
}
@Override
public String getFamily()
{
return "javax.faces.NamingContainer";
}
@Override
public void encodeBegin(FacesContext context)
throws IOException
{
// add label and input components when the view is loaded for the first time
super.encodeBegin(context);
helper.encodeBegin();
InputControl control = helper.getInputControl();
InputControl.ValueInfo vi = helper.getValueInfo(context);
// render components
ResponseWriter writer = context.getResponseWriter();
String tag = writeStartElement(vi, writer);
control.renderValue(vi, writer);
if (tag != null)
writer.endElement(tag);
}
protected String writeStartElement(InputControl.ValueInfo vi, ResponseWriter writer)
throws IOException
{
// Map<String, Object> map = getAttributes();
String tag = helper.getTagAttributeString("tag");
Object title = helper.getTagAttributeValue("title");
// Check
if (tag == null && title == null && helper.getTagAttributeValue("styleClass")==null)
return null;
// Write tag
if (StringUtils.isEmpty(tag))
tag="span";
writer.startElement(tag, this);
// Detect type and additional style
String addlStyle = null;
DataType dataType = vi.getColumn().getDataType();
if (dataType.isNumeric())
{ try {
Object val = helper.getDataValue(true);
if (val!=null && ObjectUtils.getInteger(val)<0)
addlStyle = "eValNeg";
} catch(Exception e) {
log.warn("Unable to detect sign of numeric value {}. Message is {}!", vi.getColumn().getName(), e.getMessage());
}
}
// render attributes
helper.writeAttribute(writer, "class", helper.getTagStyleClass(dataType, addlStyle));
helper.writeAttribute(writer, "style", helper.getTagAttributeString("style"));
helper.writeAttribute(writer, "title", helper.getValueTooltip(title));
return tag;
}
}