TGBrowserImpl.java

package org.herac.tuxguitar.gui.tools.browser.filesystem;

import java.io.File;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import org.herac.tuxguitar.gui.tools.browser.base.TGBrowser;
import org.herac.tuxguitar.gui.tools.browser.base.TGBrowserElement;

public class TGBrowserImpl extends TGBrowser {

  private TGBrowserDataImpl data;
  private TGBrowserElementImpl element;
  private File root;

  public TGBrowserImpl(TGBrowserDataImpl data) {
    this.data = data;
  }

  public void cdElement(TGBrowserElement element) {
    this.element = (TGBrowserElementImpl) element;
  }

  public void cdRoot() {
    this.element = null;
  }

  public void cdUp() {
    if (this.element != null) {
      this.element = this.element.getParent();
    }
  }

  public void close() {
    this.root = null;
  }

  public List listElements() {
    List elements = new ArrayList();
    File file = ((this.element != null) ? this.element.getFile() : this.root);
    if (file.exists() && file.isDirectory()) {
      File[] files = file.listFiles();
      for (int i = 0; i < files.length; i++) {
        elements.add(new TGBrowserElementImpl(this.element, files[i]));
      }
    }
    if (!elements.isEmpty()) {
      Collections.sort(elements, new TGBrowserElementComparator());
    }
    return elements;
  }

  public void open() {
    this.root = new File(this.data.getPath());
  }

}