Screen.java

package org.lobobrowser.html.js;

import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;

import org.lobobrowser.js.AbstractScriptableDelegate;

public class Screen extends AbstractScriptableDelegate {
  private final GraphicsEnvironment graphicsEnvironment;
  private final GraphicsDevice graphicsDevice;

  /**
   * @param context
   */
  Screen() {
    super();
    if (GraphicsEnvironment.isHeadless()) {
      this.graphicsEnvironment = null;
      this.graphicsDevice = null;
    } else {
      this.graphicsEnvironment = GraphicsEnvironment.getLocalGraphicsEnvironment();
      this.graphicsDevice = this.graphicsEnvironment.getDefaultScreenDevice();
    }
  }

  public int getHeight() {
    final GraphicsDevice gd = this.graphicsDevice;
    return gd == null ? 0 : gd.getDisplayMode().getHeight();
  }

  public int getPixelDepth() {
    return this.getColorDepth();
  }

  public int getWidth() {
    final GraphicsEnvironment ge = this.graphicsEnvironment;
    if (ge == null) {
      return 0;
    }
    final GraphicsDevice gd = ge.getDefaultScreenDevice();
    return gd.getDisplayMode().getWidth();
  }

  public int getAvailHeight() {
    final GraphicsEnvironment ge = this.graphicsEnvironment;
    if (ge == null) {
      return 0;
    }
    return ge.getMaximumWindowBounds().height;
  }

  public int getAvailWidth() {
    final GraphicsEnvironment ge = this.graphicsEnvironment;
    if (ge == null) {
      return 0;
    }
    return ge.getMaximumWindowBounds().width;
  }

  public int getColorDepth() {
    final GraphicsDevice gd = this.graphicsDevice;
    if (gd == null) {
      return 0;
    }
    return gd.getDisplayMode().getBitDepth();
  }
}