JavaDrawViewer.java

/*
 * @(#)JavaDrawViewer.java 5.1
 *
 */

package CH.ifa.draw.samples.javadraw;

import java.applet.Applet;
import java.awt.BorderLayout;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;

import CH.ifa.draw.framework.Drawing;
import CH.ifa.draw.framework.DrawingEditor;
import CH.ifa.draw.framework.DrawingView;
import CH.ifa.draw.framework.Tool;
import CH.ifa.draw.standard.StandardDrawing;
import CH.ifa.draw.standard.StandardDrawingView;
import CH.ifa.draw.util.Iconkit;
import CH.ifa.draw.util.StorableInput;


public  class JavaDrawViewer extends Applet implements DrawingEditor {

	private Drawing         fDrawing;
	private Tool            fTool;
	private StandardDrawingView fView;
	private Iconkit         fIconkit;

	public void init() {
		setLayout(new BorderLayout());
	    fView = new StandardDrawingView(this, 400, 370);
		add("Center", fView);
		fTool = new FollowURLTool(view(), this);

		fIconkit = new Iconkit(this);

		String filename = getParameter("Drawing");
		if (filename != null) {
		    loadDrawing(filename);
			fView.setDrawing(fDrawing);
		} else
		    showStatus("Unable to load drawing");
	}

	private void loadDrawing(String filename) {
		try {
			URL url = new URL(getCodeBase(), filename);
			InputStream stream = url.openStream();
			StorableInput reader = new StorableInput(stream);
			fDrawing = (Drawing)reader.readStorable();
		} catch (IOException e) {
			fDrawing = new StandardDrawing();
			System.out.println("Error when Loading: " + e);
			showStatus("Error when Loading: " + e);
		}
	}

	/**
	 * Gets the editor's drawing view.
	 */
	public DrawingView view() {
		return fView;
	}

	/**
	 * Gets the editor's drawing.
	 */
	public Drawing drawing() {
		return fDrawing;
	}

	/**
	 * Gets the current the tool (there is only one):
	 */
	public Tool tool() {
		return fTool;
	}

	/**
	 * Sets the editor's default tool. Do nothing since we only have one tool.
	 */
	public void toolDone() {}

	/**
	 * Ignore selection changes, we don't show any selection
	 */
	public void selectionChanged(DrawingView view) {}
}