/* 

	File:	FileDialog.java

	Author:	Chris Johnson
		johnson@dcs.gla.ac.uk

	Modified: 21.10.98

	Description:
	Illustrates dialogs to load and save a file.

*/


import java.applet.Applet;
import java.awt.*;

public class FileDialogTest extends Applet{
	
	Button load = new Button("Load file...");
	Button save = new Button("Save file...");
	FileDialog dialog;
	String filename;
	
	public void init(){
		add(load);	/* set up buttons that users presses on */ 
		add(save);	/* initial screen to then call up either*/
	}			/* the load or save dialogs as appropriate */
	
		
	
	public boolean action(Event event, Object what){
			
		showStatus(null);
			
		if (event.target == load){
			Button button = load;
			Frame myFrame = getFrame(button);
			dialog = new FileDialog(myFrame, "Load A File");
		}
		else if (event.target == save){
			Button button = save;
			Frame myFrame = getFrame(button);
			dialog = new FileDialog(myFrame, "Save A File", FileDialog.SAVE);
		}
			
		dialog.show();
			
		if((filename = dialog.getFile())!= null)
			showStatus(filename);
		else
			showStatus("FileDialog Cancelled");
			
		return true;
	}

	static Frame getFrame (Component c) {

		Frame frame = null;

		while ((c= c.getParent())!= null){
			if (c instanceof Frame)
			frame = (Frame) c;
		}
		return frame;
	}
	
}