import org.eclipse.swt.SWT;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.ColorDialog;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;


public class OCCShell extends Canvas {

	OCCViewer viewer = new OCCViewer();
	public OCCShell(Composite parent, int style) {
		
		super(parent, SWT.NO_BACKGROUND |
				SWT.NO_REDRAW_RESIZE );
	
		int  handleParent = handle;

		
		
		if(!viewer.InitViewer(handleParent)){
			System.out.println("Error during Graphics Init");
		}
		this.addPaintListener(new PaintListener(){

			@Override
			public void paintControl(PaintEvent e) {
				if(viewer!= null)
					viewer.RedrawView();
					viewer.UpdateView();

				
			}
			
		});
		this.addListener(SWT.Resize, new Listener() {
		      

			@Override
			public void handleEvent(Event event) {
				// TODO Auto-generated method stub
				
			}
		    });
		
		this.addListener (SWT.MenuDetect, new Listener () {
			public void handleEvent (Event event) {
				Menu menu = new Menu (getShell(), SWT.POP_UP);
				MenuItem item = new MenuItem (menu, SWT.PUSH);
				item.setText ("Set Background Color");
				item.addListener (SWT.Selection, new Listener () {
					public void handleEvent (Event e) {
						 
						ColorDialog cd = new ColorDialog(OCCShell.this.getShell());
					        cd.setText("ColorDialog Demo");
					        cd.setRGB(new RGB(255, 255, 255));
					        RGB newColor = cd.open();
					        if (newColor == null) {
					          return;
					        }
					       viewer.SetBackgroundColor(newColor.red, newColor.green, newColor.blue);
					       viewer.UpdateCurrentViewer();
					      
					}
				});
				MenuItem item2 = new MenuItem (menu, SWT.PUSH);
				item2.setText ("ImportBrep");
				item2.addListener (SWT.Selection, new Listener () {
					public void handleEvent (Event e) {
						FileDialog dialog = new FileDialog(getShell());
						dialog.setFilterExtensions(new String[] {"*.brep"});
						String filename = dialog.open();
						//filename += '\0';
						if (filename == null) return;
						System.out.println(filename);
						
						System.out.println(viewer.SetAISContext(viewer));
						
						
						boolean b = viewer.ImportBRep(filename);
						viewer.UpdateCurrentViewer();
						
						System.out.println(b);
					      
					}
				});
				menu.setLocation (event.x, event.y);
				menu.setVisible (true);
				while (!menu.isDisposed () && menu.isVisible ()) {
					if (!getDisplay().readAndDispatch ()) getDisplay().sleep ();
				}
				menu.dispose ();
			}
		});

		
		
		
	}

	

}