/*******************************************************************************
* 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.ofbiz.webapp.taglib;
import java.io.IOException;
import java.lang.reflect.Method;
import java.util.Collection;
import javax.servlet.jsp.JspTagException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.BodyContent;
import javax.servlet.jsp.tagext.BodyTagSupport;
import org.ofbiz.base.util.Debug;
/**
* IfTag - Conditional Tag.
*/
public class IfTag extends BodyTagSupport {
public static final String module = IfTag.class.getName();
private String name = null;
private String value = null;
private String type = null;
private Integer size = null;
public void setName(String name) {
this.name = name;
}
public void setValue(String value) {
this.value = value;
}
public void setType(String type) {
this.type = type;
}
public void setSize(String size) throws NumberFormatException {
this.size = Integer.valueOf(size);
}
public String getName() {
return name;
}
public String getValue() {
return value;
}
public String getType() {
return type;
}
public String getSize() {
if (size == null)
return null;
return size.toString();
}
@Override
public int doStartTag() throws JspTagException {
Object object = null;
try {
object = pageContext.findAttribute(name);
if (object == null) {
object = pageContext.getRequest().getParameter(name);
}
if (object == null) {
return SKIP_BODY;
}
} catch (RuntimeException e) {
Debug.logError(e, module);
return SKIP_BODY;
}
if (size != null) {
int localSize = size.intValue();
try {
if (object instanceof Collection) {
// the object is a Collection so compare the size.
if (((Collection<?>) object).size() > localSize)
return EVAL_BODY_AGAIN;
} else if (object instanceof String) {
// the object is a Collection so compare the size.
if (((String) object).length() > localSize)
return EVAL_BODY_AGAIN;
} else {
// use reflection to find a size() method
try {
Method sizeMethod = object.getClass().getMethod("size", (Class[]) null);
int objectSize = ((Integer) sizeMethod.invoke(object, (Object[]) null)).intValue();
if (objectSize > localSize)
return EVAL_BODY_AGAIN;
} catch (Exception e) {
Debug.logError(e, module);
return SKIP_BODY;
}
}
} catch (RuntimeException e) {
Debug.logError(e, module);
return SKIP_BODY;
}
} else if (object instanceof Boolean || "Boolean".equalsIgnoreCase(type)) {
// Assume the object is a Boolean and compare to the Boolean value of value.
try {
Boolean b = (Boolean) object;
if (value != null) {
Boolean v = Boolean.valueOf(value);
if (b.equals(v))
return EVAL_BODY_AGAIN;
} else {
if (b.booleanValue())
return EVAL_BODY_AGAIN;
}
} catch (RuntimeException e) {
Debug.logError(e, module);
return SKIP_BODY;
}
} else if (value != null) {
if (object instanceof String || "String".equalsIgnoreCase(type)) {
// Assume the object is a string and compare to the String value of value.
try {
String s = (String) object;
if (s.equals(value))
return EVAL_BODY_AGAIN;
} catch (RuntimeException e) {
Debug.logError(e, module);
return SKIP_BODY;
}
} else if (object instanceof Integer || "Integer".equalsIgnoreCase(type)) {
// Assume the object is a Integer and compare to the Integer value of value.
try {
Integer i = (Integer) object;
Integer v = Integer.valueOf(value);
if (i.equals(v))
return EVAL_BODY_AGAIN;
} catch (RuntimeException e) {
Debug.logError(e, module);
return SKIP_BODY;
}
} else if (object instanceof Long || "Long".equalsIgnoreCase(type)) {
// Assume the object is a Integer and compare to the Integer value of value.
try {
Long i = (Long) object;
Long v = Long.valueOf(value);
if (i.equals(v))
return EVAL_BODY_AGAIN;
} catch (RuntimeException e) {
Debug.logError(e, module);
return SKIP_BODY;
}
} else if (object instanceof Float || "Float".equalsIgnoreCase(type)) {
// Assume the object is a Double and compare to the Double value of value.
try {
Float d = (Float) object;
Float v = Float.valueOf(value);
if (d.equals(v))
return EVAL_BODY_AGAIN;
} catch (RuntimeException e) {
Debug.logError(e, module);
return SKIP_BODY;
}
} else if (object instanceof Double || "Double".equalsIgnoreCase(type)) {
// Assume the object is a Double and compare to the Double value of value.
try {
Double d = (Double) object;
Double v = Double.valueOf(value);
if (d.equals(v))
return EVAL_BODY_AGAIN;
} catch (RuntimeException e) {
Debug.logError(e, module);
return SKIP_BODY;
}
} else {
// Assume the object is an Object and compare to the Object named value.
Object valueObject = null;
try {
valueObject = pageContext.findAttribute(value);
if (valueObject != null && valueObject.equals(object))
return EVAL_BODY_AGAIN;
} catch (RuntimeException e) {
Debug.logError(e, module);
return SKIP_BODY;
}
}
} else {
// basicly if no other comparisons available, just check to see if
// the thing is null or not, and since we've already checked that,
// treat as true here
return EVAL_BODY_AGAIN;
}
return SKIP_BODY;
}
@Override
public int doAfterBody() {
return SKIP_BODY;
}
@Override
public int doEndTag() {
try {
BodyContent body = getBodyContent();
if (body != null) {
JspWriter out = body.getEnclosingWriter();
String bodyString = body.getString();
body.clearBody();
//Debug.logInfo("printing string: " + bodyString, module);
out.print(bodyString);
}
} catch (IOException e) {
Debug.logError(e, "IfTag Error.", module);
}
return EVAL_PAGE;
}
}