package org.herac.tuxguitar.gui.items.xml;

import java.io.File;
import java.io.IOException;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.apache.log4j.Logger;
import org.herac.tuxguitar.gui.editors.chord.ChordSelector;
import org.herac.tuxguitar.gui.items.ItemManager;
import org.w3c.dom.Document;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

public class ToolBarsReader {
  private static final String ATTR_ENABLED = "enabled";
  private static final String ATTR_NAME = "name";
  private static final String ITEM_TAG = "toolbar";

  private static Document getDocument(File file)
      throws ParserConfigurationException, SAXException, IOException {
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    DocumentBuilder builder = factory.newDocumentBuilder();
    Document document = builder.parse(file);
    return document;
  }

  public static void loadToolBars(ItemManager manager, File file) {
    try {
      if (file.exists()) {
        loadToolBars(manager, getDocument(file).getFirstChild());
      }
    } catch (Throwable throwable) {
      LOG.error(throwable);
    }
  }
  

  /** The Logger for this class. */
  public static final transient Logger LOG = Logger
      .getLogger(ToolBarsReader.class);
  

  private static void loadToolBars(ItemManager manager, Node node) {
    NodeList listNode = node.getChildNodes();
    int index = 0;
    for (int i = 0; i < listNode.getLength(); i++) {
      Node child = listNode.item(i);
      String nameNode = child.getNodeName();

      if (nameNode.equals(ITEM_TAG)) {
        NamedNodeMap params = child.getAttributes();

        Node name = params.getNamedItem(ATTR_NAME);
        Node enabled = params.getNamedItem(ATTR_ENABLED);

        if (name == null || enabled == null || name.getNodeValue() == null
            || enabled.getNodeValue() == null) {
          System.err.println("Invalid ToolBar Attributes.");
          continue;
        }
        manager.setToolBarStatus(name.getNodeValue(), Boolean.valueOf(
            enabled.getNodeValue().trim()).booleanValue(), index++);
      }
    }
  }
}