www.pudn.com > jsptree-1.0-b6-src.zip > JSPTreeTag.java
/*
* ====================================================================
* The JSP Tree Software License, Version 1.1
*
* (this license is derived and fully compatible with the Apache Software
* License - see http://www.apache.org/LICENSE.txt)
*
* Copyright (c) 2002-2005 jsptree.sourceforge.net . All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
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* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by
* jsptree.sourceforge.net (http://jsptree.sourceforge.net/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The name "JSP Tree" must not be used to endorse or promote
* products derived from this software without prior written permission.
* For written permission, please contact modano@users.sourceforge.net .
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* 5. Products derived from this software may not be called "JSP Tree",
* nor may "JSP Tree" appear in their name, without prior written
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* ====================================================================
*/
package net.sf.jsptree;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.JspTagException;
import javax.servlet.jsp.tagext.TagSupport;
import java.io.IOException;
import org.apache.log4j.Logger;
import net.sf.jsptree.component.JSPTreeComponent;
import net.sf.jsptree.skin.AbstractSkin;
import net.sf.jsptree.tree.TreeFactory;
/**
* @author Vladislav Kamensky
*/
public class JSPTreeTag extends TagSupport {
private static Logger LOG = Logger.getLogger(JSPTreeTag.class);
private String name;
private TreeFactory treeFactory;
private String pathToXMLTree;
private String startAtDepth;
private String skinName;
private String imagePath;
private String templatePath;
private String stateManagerAction;
private String shareTreeStructure;
private String comparator;
public JSPTreeTag() {
}
public void setName(String name) {
this.name = name;
}
public void setTreeFactory(TreeFactory treeFactory) {
this.treeFactory = treeFactory;
}
public void setXtree(String pathToXMLTree) throws JspTagException {
this.pathToXMLTree = pathToXMLTree;
}
public void setSkin(String skinName) throws JspTagException {
this.skinName = skinName;
}
public void setStartAtDepth(String depth) throws JspTagException {
this.startAtDepth = depth;
}
public void setImagesPath(String imagePath) {
this.imagePath = imagePath;
}
public void setStateManagerAction(String stateManagerAction) {
this.stateManagerAction = stateManagerAction;
}
public void setTemplatePath(String path) {
this.templatePath = path;
}
public void setShareTreeStructure(String s) {
this.shareTreeStructure = s;
}
public void setComparator(String s) {
this.comparator = s;
}
public int doEndTag() throws JspTagException {
JSPTreeComponent treeComponent = new JSPTreeComponent();
treeComponent.setContext(pageContext.getServletContext());
treeComponent.setRequest((HttpServletRequest) pageContext.getRequest());
treeComponent.setResponse((HttpServletResponse) pageContext.getResponse());
if (treeComponent == null) {
LOG.fatal("JSPTree Component could not be constructed");
throw new JspTagException("JSPTree Component could not be constructed");
}
if (treeComponent.getRequestURI() == null) {
LOG.fatal("URL could not be constructed");
throw new JspTagException("URL could not be constructed");
}
if (name == null) {
LOG.fatal("Missing mandatory argument name");
throw new JspTagException("Missing mandatory argument name");
} else {
treeComponent.setName(name);
}
if (templatePath == null) {
LOG.fatal("Missing mandatory argument template path");
throw new JspTagException("Missing mandatory template path");
} else {
treeComponent.setTemplatePath(templatePath);
}
if (treeFactory == null && pathToXMLTree == null) {
LOG.fatal("Missing mandatory argument tree factory or argument xtree. One must be specified");
throw new JspTagException("Missing argument treeFactory or argument xtree. One must be specified");
}
if (treeFactory != null) {
treeComponent.setTreeFactory(treeFactory);
} else {
try {
treeComponent.setXMLTree(pathToXMLTree);
} catch (Exception exception) {
LOG.error("Exception while building tree from XTree: ", exception);
throw new JspTagException("Exception while building tree from XTree: " + exception.getMessage());
}
}
if (skinName == null) {
LOG.fatal("Setting skin of tree to " + "default");
treeComponent.setSkin(AbstractSkin.DEFAULT_SKIN);
} else {
treeComponent.setSkin(skinName);
}
try {
treeComponent.setStartAtDepth(Integer.parseInt(startAtDepth));
} catch (NumberFormatException numberformatexception) {
LOG.error("NumberFormatException while trying to set attribute startAtDepth");
throw new JspTagException("NumberFormatException while trying to set attribute startAtDepth");
}
treeComponent.setImagesPath(imagePath);
treeComponent.setStateManagerAction(stateManagerAction);
treeComponent.setShareTreeStructure(shareTreeStructure);
if (comparator != null) {
try {
Class comparatorClass = Class.forName(comparator);
java.util.Comparator comp = (java.util.Comparator) comparatorClass.newInstance();
treeComponent.setComparator(comp);
} catch (ClassNotFoundException e) {
throw new JspTagException("Exception while setting custom comparator" + e.getMessage());
} catch (InstantiationException e) {
throw new JspTagException("Exception while setting custom comparator" + e.getMessage());
} catch (IllegalAccessException e) {
throw new JspTagException("Exception while setting custom comparator" + e.getMessage());
}
}
try {
treeComponent.printContent(new WebWriter(pageContext.getOut()));
} catch (IOException e) {
LOG.error("IO Error: ", e);
throw new JspTagException("IO Error: " + e.getMessage());
}
if (LOG.isInfoEnabled()) {
LOG.info("ended");
}
return EVAL_PAGE;
}
private boolean isTrueValue(String s, String attributeNmae) throws JspTagException {
boolean flag = false;
if (s != null && s.trim().equalsIgnoreCase("true"))
flag = true;
else if (s != null && s.trim().equalsIgnoreCase("false")) {
flag = false;
} else {
LOG.error("Incorrect value for " + attributeNmae + " attribute. It must be either true or false");
throw new JspTagException("Incorrect value for " + attributeNmae + " attribute. It must be either true or false");
}
return flag;
}
}