GeoGebraAppletPreloader.java

package geogebra;

import java.awt.Color;

import javax.swing.JApplet;

import org.geogebra.common.GeoGebraConstants;

/**
 * Applet to load all GeoGebra jar files in the background.
 */
public class GeoGebraAppletPreloader extends JApplet {
	private static final long serialVersionUID = 1L;

	@Override
	public void init() {
		setBackground(Color.white);
		System.out.println("GeoGebraAppletPreloader "
				+ GeoGebraConstants.VERSION_STRING + " started");
		loadAllJarFiles(true);
	}

	/**
	 * Loads all jar files in a background task.
	 * 
	 * @param loadJavaScriptJAR
	 *            true to load geogebra_javascript.jar
	 */
	public static void loadAllJarFiles(final boolean loadJavaScriptJAR) {
		Thread jarLoader = new Thread() {
			@Override
			public void run() {
				// touch on file in all jar files to force loading

				// load main jar
				System.out.print("loading geogebra_main.jar... ");
				System.out.flush();
				try {
					org.geogebra.desktop.main.AppD.class.getClass();
					System.out.println("done");
				} catch (Exception e) {
					System.out.println("failed");
				} catch (Throwable e) {
					System.out.println("failed");
				}
				System.out.flush();

				// load main jar
				System.out.print("loading geogebra_algos.jar... ");
				System.out.flush();
				try {
					org.geogebra.common.kernel.discrete.AlgoVoronoi.class
							.getClass();
					System.out.println("done");
				} catch (Exception e) {
					System.out.println("failed");
				} catch (Throwable e) {
					System.out.println("failed");
				}
				System.out.flush();

				// load cas jar
				System.out.print("loading geogebra_cas.jar... ");
				System.out.flush();
				try {
					org.geogebra.common.cas.GeoGebraCAS.class.getClass();
					System.out.println("done");
				} catch (Exception e) {
					System.out.println("failed");
				} catch (Throwable e) {
					System.out.println("failed");
				}
				System.out.flush();

				// load gui jar
				System.out.print("loading geogebra_gui.jar... ");
				System.out.flush();
				try {
					org.geogebra.desktop.gui.GuiManagerD.class.getClass();
					System.out.println("done");
				} catch (Exception e) {
					System.out.println("failed");
				} catch (Throwable e) {
					System.out.println("failed");
				}
				System.out.flush();

				// force loading properties
				System.out.print("loading geogebra_properties.jar... ");
				System.out.flush();
				try {
					Object url = GeoGebraAppletPreloader.class.getResource(
							"/org/geogebra/desktop/properties/plain.properties");
					if (url != null) {
						System.out.println("done");
					} else {
						System.out.println("not found");
					}
				} catch (Exception e) {
					System.out.println("not found");
				} catch (Throwable e) {
					System.out.println("not found");
				}
				System.out.flush();

				// load export jar
				System.out.print("loading geogebra_export.jar... ");
				System.out.flush();
				try {
					org.geogebra.desktop.export.WorksheetExportDialog.class
							.getClass();
					System.out.println("done");
				} catch (Exception e) {
					System.out.println("failed");
				} catch (Throwable e) {
					System.out.println("failed");
				}
				System.out.flush();

				// load jlatexmath jar
				System.out.print("loading jlatexmath.jar... ");
				System.out.flush();
				try {
					com.himamis.retex.renderer.share.TeXFormula.class
							.getClass();
					System.out.println("done");
				} catch (Exception e) {
					System.out.println("failed");
				} catch (Throwable e) {
					System.out.println("failed");
				}
				System.out.flush();

				if (loadJavaScriptJAR) {
					// load javascript jar
					System.out.print("loading geogebra_javascript.jar... ");
					System.out.flush();
					try {
						org.mozilla.javascript.Context.class.getClass();
						System.out.println("done");
					} catch (Exception e) {
						System.out.println("failed");
					} catch (Throwable e) {
						System.out.println("failed");
					}
					System.out.flush();
				}

			}
		};
		jarLoader.start();
	}
}