/*
* Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 David Berkman
*
* This file is part of the SmallMind Code Project.
*
* The SmallMind Code Project is free software, you can redistribute
* it and/or modify it under either, at your discretion...
*
* 1) The terms of GNU Affero General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* ...or...
*
* 2) The terms of the Apache License, Version 2.0.
*
* The SmallMind Code Project is distributed in the hope that it will
* be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License or Apache License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* and the Apache License along with the SmallMind Code Project. If not, see
* <http://www.gnu.org/licenses/> or <http://www.apache.org/licenses/LICENSE-2.0>.
*
* Additional permission under the GNU Affero GPL version 3 section 7
* ------------------------------------------------------------------
* If you modify this Program, or any covered work, by linking or
* combining it with other code, such other code is not for that reason
* alone subject to any of the requirements of the GNU Affero GPL
* version 3.
*/
package org.smallmind.swing.menu;
import java.awt.event.KeyEvent;
import java.io.IOException;
import java.util.Iterator;
import java.util.LinkedList;
import javax.swing.AbstractButton;
import javax.swing.Action;
import javax.swing.ImageIcon;
import javax.swing.JComponent;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.smallmind.nutsnbolts.xml.XMLEntityResolver;
import org.smallmind.nutsnbolts.xml.XMLErrorHandler;
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.InputSource;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
public class MenuXmlParser implements ContentHandler {
private static final String ALPHABET = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
private static final int[] VK_CODES = {KeyEvent.VK_A, KeyEvent.VK_B, KeyEvent.VK_C, KeyEvent.VK_D, KeyEvent.VK_E, KeyEvent.VK_F, KeyEvent.VK_G, KeyEvent.VK_H, KeyEvent.VK_I, KeyEvent.VK_J, KeyEvent.VK_K, KeyEvent.VK_L, KeyEvent.VK_M, KeyEvent.VK_N, KeyEvent.VK_O, KeyEvent.VK_P, KeyEvent.VK_Q, KeyEvent.VK_R, KeyEvent.VK_S, KeyEvent.VK_T, KeyEvent.VK_U, KeyEvent.VK_V, KeyEvent.VK_W, KeyEvent.VK_X, KeyEvent.VK_Y, KeyEvent.VK_Z};
private MenuModel menuModel;
private MenuActionProvider actionProvider;
private LinkedList<JComponent> menuStack;
public static MenuModel parse (InputSource inputSource, MenuActionProvider actionProvider)
throws IOException, SAXException, ParserConfigurationException {
SAXParserFactory parserFactory;
SAXParser parser;
MenuXmlParser contentHandler;
MenuModel menuModel;
parserFactory = SAXParserFactory.newInstance();
parserFactory.setValidating(true);
parserFactory.setNamespaceAware(true);
parser = parserFactory.newSAXParser();
menuModel = new MenuModel();
contentHandler = new MenuXmlParser(menuModel, actionProvider);
parser.getXMLReader().setProperty("http://java.sun.com/xml/jaxp/properties/schemaLanguage", "http://www.w3.org/2001/XMLSchema");
parser.getXMLReader().setContentHandler(contentHandler);
parser.getXMLReader().setEntityResolver(XMLEntityResolver.getInstance());
parser.getXMLReader().setErrorHandler(XMLErrorHandler.getInstance());
parser.getXMLReader().parse(inputSource);
return menuModel;
}
private MenuXmlParser (MenuModel menuModel, MenuActionProvider actionProvider) {
this.menuModel = menuModel;
this.actionProvider = actionProvider;
menuStack = new LinkedList<JComponent>();
}
public void setDocumentLocator (Locator locator) {
}
public void startDocument ()
throws SAXException {
}
public void endDocument ()
throws SAXException {
}
private void pushMenuItem (JMenuItem menuItem) {
if (menuStack.getLast() instanceof JMenuBar) {
((JMenuBar)menuStack.getLast()).add((JMenu)menuItem);
}
else {
((JMenu)menuStack.getLast()).add(menuItem);
}
menuStack.add(menuItem);
}
private String getActionPath () {
StringBuilder pathBuilder;
Iterator menuStackIter;
Object menuObject;
pathBuilder = new StringBuilder();
menuStackIter = menuStack.iterator();
while (menuStackIter.hasNext()) {
menuObject = menuStackIter.next();
if (!(menuObject instanceof JMenuBar)) {
if (pathBuilder.length() != 0) {
pathBuilder.append("/");
}
pathBuilder.append(((AbstractButton)menuObject).getText());
}
}
return pathBuilder.toString();
}
public void startElement (String namespaceURI, String localName, String qName, Attributes atts)
throws SAXException {
JMenu menu;
JMenuItem menuItem;
Action menuAction;
String actionPath;
String mnemonic;
String icon;
if (qName.equals("menu-bar")) {
menuStack.add(menuModel.addMenuBar());
}
else if (qName.equals("menu")) {
menu = new JMenu(atts.getValue("text"));
if ((mnemonic = atts.getValue("mnemonic")) != null) {
menu.setMnemonic(VK_CODES[ALPHABET.indexOf(mnemonic.charAt(0))]);
}
if ((icon = atts.getValue("icon")) != null) {
menu.setIcon(new ImageIcon(Thread.currentThread().getContextClassLoader().getResource(icon)));
}
pushMenuItem(menu);
}
else if (qName.equals("menu-item")) {
pushMenuItem(new JMenuItem());
}
else if (qName.equals("separator")) {
((JMenu)menuStack.getLast()).addSeparator();
}
else if (qName.equals("definition")) {
actionPath = getActionPath() + atts.getValue("text");
menuItem = (JMenuItem)menuStack.getLast();
menuItem.setText(atts.getValue("text"));
menuItem.setEnabled(Boolean.parseBoolean(atts.getValue("enabled")));
menuItem.setActionCommand(actionPath);
if ((mnemonic = atts.getValue("mnemonic")) != null) {
menuItem.setMnemonic(VK_CODES[ALPHABET.indexOf(mnemonic.charAt(0))]);
}
if ((icon = atts.getValue("icon")) != null) {
menuItem.setIcon(new ImageIcon(Thread.currentThread().getContextClassLoader().getResource(icon)));
}
menuItem.addActionListener(actionProvider.getDefaultActionListener());
menuModel.addMenuReference(actionPath, menuItem);
}
else if (qName.equals("action")) {
if ((menuAction = actionProvider.getAction(atts.getValue("class"))) == null) {
throw new SAXException("No such Action (" + atts.getValue("class") + ")");
}
actionPath = getActionPath() + menuAction.getValue(Action.NAME);
menuItem = (JMenuItem)menuStack.getLast();
menuItem.setAction(menuAction);
menuItem.setActionCommand(getActionPath());
menuModel.addMenuReference(actionPath, menuItem);
}
}
public void endElement (String namespaceURI, String localName, String qName)
throws SAXException {
if (qName.equals("menu-bar") || qName.equals("menu") || qName.equals("menu-item")) {
menuStack.removeLast();
}
}
public void characters (char[] ch, int start, int length)
throws SAXException {
}
public void ignorableWhitespace (char[] ch, int start, int length)
throws SAXException {
}
public void processingInstruction (String target, String data)
throws SAXException {
}
public void skippedEntity (String name)
throws SAXException {
}
public void startPrefixMapping (String prefix, String uri)
throws SAXException {
}
public void endPrefixMapping (String prefix)
throws SAXException {
}
}