/**
* Copyright (C) 2012 JBoss Inc
*
* Licensed 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.jboss.dashboard.ui.taglib.factory;
import org.jboss.dashboard.commons.cdi.CDIBeanLocator;
import org.apache.commons.jxpath.JXPathContext;
import org.apache.commons.jxpath.JXPathException;
import org.apache.commons.lang.StringEscapeUtils;
import org.jboss.dashboard.ui.components.BeanHandler;
import org.jboss.dashboard.ui.components.UIBeanHandler;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.TagData;
import javax.servlet.jsp.tagext.TagExtraInfo;
import javax.servlet.jsp.tagext.VariableInfo;
import java.io.IOException;
public class PropertyTag extends GenericFactoryTag {
private static transient org.slf4j.Logger log = org.slf4j.LoggerFactory.getLogger(PropertyTag.class.getName());
public static final String VALUE_NAME = "value";
public static class TEI extends TagExtraInfo {
public VariableInfo[] getVariableInfo(TagData data) {
String varName = data.getId();
return (new VariableInfo[]{
new VariableInfo(varName == null ? VALUE_NAME : varName, "java.lang.Object", true, VariableInfo.NESTED)
});
}
}
private boolean valueIsHTML;
private Object value;
public boolean isValueIsHTML() {
return valueIsHTML;
}
public void setValueIsHTML(boolean valueIsHTML) {
this.valueIsHTML = valueIsHTML;
}
/**
* @see javax.servlet.jsp.tagext.TagSupport
*/
public int doEndTag() throws JspException {
try {
if (super.bodyContent == null) {
Object value = getValue();
String textValue = value == null ? "" : value.toString();
pageContext.getOut().print(valueIsHTML ? textValue : StringEscapeUtils.escapeHtml(textValue));
} else {
pageContext.getOut().print(bodyContent.getString());
}
} catch (IOException e) {
handleError(e);
}
value = null;
return EVAL_PAGE;
}
protected Object getValue() {
if (value != null) return value;
Object beanObject = CDIBeanLocator.getBeanByNameOrType(getBeanName());
if (beanObject != null) {
JXPathContext ctx = JXPathContext.newContext(beanObject);
try {
return value = ctx.getValue(getProperty());
} catch (JXPathException jxpe) {
log.warn("Can't read property " + getProperty() + " in " + getBeanName() + ": ", jxpe);
}
}
return null;
}
/**
* @see javax.servlet.jsp.tagext.TagSupport
*/
public int doStartTag() throws JspException {
try {
Object value = getValue();
String valueName = id == null ? VALUE_NAME : id;
if (value == null) pageContext.removeAttribute(valueName);
else pageContext.setAttribute(valueName, value);
} catch (Exception e) {
handleError(e);
}
return EVAL_BODY_AGAIN;
}
}