/* Copyright 2012 Aguzzi Cristiano
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 jada.ngeditor.persistence;
import de.lessvoid.nifty.Nifty;
import jada.ngeditor.model.GUI;
import jada.ngeditor.model.GUIFactory;
import jada.ngeditor.model.IDgenerator;
import jada.ngeditor.model.elements.GCostumControl;
import jada.ngeditor.model.elements.GElement;
import jada.ngeditor.model.elements.specials.GUseControls;
import jada.ngeditor.model.elements.specials.GUseStyle;
import jada.ngeditor.model.exception.NoProductException;
import jada.ngeditor.model.utils.ClassUtils;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Set;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.namespace.QName;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
/**
*
* @author cris
*/
public class GUIReader {
private Nifty loader;
private Set<String> errors;
private final GElementFactory gElementFactory;
public GUIReader(Nifty loader) throws ClassNotFoundException, IOException {
this.loader = loader;
this.errors = new HashSet<String>();
gElementFactory = new GUIReader.GElementFactory();
}
public GUI readGUI(File f) throws ParserConfigurationException, IOException, SAXException, NoProductException {
return this.readGUI(new FileInputStream(f));
}
public GUI readGUI(InputStream is) throws ParserConfigurationException, IOException, SAXException, NoProductException {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.parse(is);
document.getDocumentElement().normalize();
GUI result = GUIFactory.getInstance().createGUI(loader);
IDgenerator.getInstance().invalidate();
Element root = (Element) document.getElementsByTagName("nifty").item(0);
NodeList screens = document.getElementsByTagName("screen");
for (int i = 0; i < screens.getLength(); i++) {
if (screens.item(i).getNodeType() == Node.ELEMENT_NODE) {
Element screen = (Element) screens.item(i);
System.out.println("id " + screen.getAttribute("id"));
try {
this.addRecursiveChild(screen, null, result);
} catch (NoProductException ex) {
this.errors.add(ex.getProduct());
continue;
}
}
}
NodeList useControls = document.getElementsByTagName("useControls");
for (int i = 0; i < useControls.getLength(); i++) {
if (useControls.item(i).getNodeType() == Node.ELEMENT_NODE){
GUseControls controls = new GUseControls();
Element contEle = (Element) useControls.item(i);
controls.setFilename(contEle.getAttribute("filename"));
result.addUseControls(controls);
}
}
NodeList useStyles = document.getElementsByTagName("useStyles");
for (int i = 0; i < useStyles.getLength(); i++) {
if (useStyles.item(i).getNodeType() == Node.ELEMENT_NODE){
GUseStyle styles = new GUseStyle();
Element styleEle = (Element) useStyles.item(i);
styles.setFilename(styleEle.getAttribute("filename"));
result.addUseStyles(styles);
}
}
return result;
}
private void addRecursiveChild(Element element, GElement parent, GUI gui) throws NoProductException {
GElement Gchild = this.gElementFactory.createGElement(element);
gui.addElementToParent(Gchild, parent);
NodeList child = element.getChildNodes();
for (int i = 0; i < child.getLength(); i++) {
if (child.item(i).getNodeType() == Node.ELEMENT_NODE) {
Element cur = (Element) child.item(i);
try {
addRecursiveChild(cur, Gchild, gui);
} catch (NoProductException e) {
this.errors.add(e.getProduct());
continue;
}
}
}
}
/**
* Provide all tag not loaded by the editor
*
* @return a string with all the tag
*/
public String getTagNotLoaded() {
String res = "";
for (String sel : this.errors) {
res += sel + ", ";
}
return res.substring(0, res.length() > 0 ? res.length() - 1 : 0);
}
private class GElementFactory {
private HashMap<String, Class<? extends GElement>> mappings = new HashMap<String, Class<? extends GElement>>();
private GElementFactory() throws ClassNotFoundException, IOException {
Set<Class<? extends GElement>> classes = ClassUtils.findAllGElements();
for (Class c : classes) {
ControlBinding binding = (ControlBinding) c.getAnnotation(ControlBinding.class);
if (binding != null) {
mappings.put(binding.name().toString(), c);
} else {
XmlRootElement element = (XmlRootElement) c.getAnnotation(XmlRootElement.class);
if (element != null) {
mappings.put(element.name(), c);
}
}
}
}
public GElement createGElement(Element element) throws NoProductException {
String tag = element.getTagName();
GElement gchild = null;
try {
if ("control".equals(tag)) {
gchild = this.internalInst(element.getAttribute("name"), element.getAttribute("id"),true);
} else {
gchild = this.internalInst(tag, element.getAttribute("id"),false);
}
HashMap<QName, String> temp = new HashMap<QName, String>();
NamedNodeMap attr = element.getAttributes();
for (int i = 0; i < attr.getLength(); i++) {
String key = attr.item(i).getNodeName();
String value = attr.item(i).getNodeValue();
temp.put(QName.valueOf("" + key), value);
}
gchild.setXmlAttributes(temp);
} catch (Exception e) {
throw new NoProductException(tag);
}
return gchild;
}
private GElement internalInst(String name, String id,boolean control) throws NoSuchMethodException, InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {
if(control && !mappings.containsKey(name)){
return new GCostumControl(name, id);
}
Constructor<? extends GElement> constructor = this.mappings.get(name).getConstructor(String.class);
if (IDgenerator.getInstance().isUnique(this.mappings.get(name), id)) {
IDgenerator.getInstance().addID(id, this.mappings.get(name));
} else {
id = IDgenerator.getInstance().generate(this.mappings.get(name));
}
GElement res = constructor.newInstance(id);
return res;
}
}
}