import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.SashForm;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.DirectoryDialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.ExpandBar;
import org.eclipse.swt.widgets.ExpandItem;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.TabFolder;
import org.eclipse.swt.widgets.Text;

/**
 * A minimal program that draws with JOGL in an SWT Composite.
 *
 * @author Wade Walker
 */
public class OneTriangleSWT {

	private Display display;
	private Shell shell;
	// file explorer
	private FileDialog dialog;
	private DirectoryDialog folderDialog;
	private Text txtPath;
	private ExpandBar blocks;
	private MeshList meshes;
//	private OpenGLCanvas3DJOGL D3Display;
//	private OpenGLCanvas2DJOGL D2Display;
	private TabFolder tabs;

	public OneTriangleSWT() {
		display = new Display();
        shell = new Shell( display );
        shell.setText( "OneTriangle SWT" );
        shell.setLayout( new FillLayout() );
        shell.setSize( 640, 480 );

        SashForm sashForm = new SashForm(shell, SWT.HORIZONTAL);

        final Composite composite_1 = new Composite(sashForm, SWT.BORDER);
//		GridData gd_composite_1 = new GridData(SWT.FILL, SWT.FILL, false, true, 1, 1);
//		gd_composite_1.widthHint = 150;
//		composite_1.setLayoutData(gd_composite_1);
		GridLayout gl_composite_1 = new GridLayout(4, true);
		gl_composite_1.marginRight = 1;
		gl_composite_1.marginLeft = 1;
		gl_composite_1.verticalSpacing = 1;
		gl_composite_1.marginWidth = 0;
		gl_composite_1.marginHeight = 1;
		gl_composite_1.horizontalSpacing = 1;
		composite_1.setLayout(gl_composite_1);
		Button btnDir = new Button(composite_1, SWT.NONE);
		btnDir.setImage(new Image(display, getClass().getResourceAsStream("folder-open.png")));
		btnDir.addSelectionListener(new SelectionListener() {

			@Override
			public void widgetSelected(SelectionEvent arg0) {
				folderDialog = new DirectoryDialog(shell);
				folderDialog.setFilterPath(txtPath.getText());
				String path = folderDialog.open();
				if (path != null)
					txtPath.setText(path);
			}

			@Override
			public void widgetDefaultSelected(SelectionEvent arg0) {}

		});

		Button btnPlus = new Button(composite_1, SWT.NONE);
		btnPlus.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 3, 1));
		btnPlus.setImage(new Image(display, getClass().getResourceAsStream("plus.png")));
		btnPlus.addSelectionListener(new SelectionListener() {

			@Override
			public void widgetSelected(SelectionEvent arg0) {
				dialog = new FileDialog(shell);
				dialog.setFilterPath(txtPath.getText());
				String pathToMesh = dialog.open();
				if (pathToMesh != null) {
					try {
						Bdy bdy = new Bdy(pathToMesh);

						ExpandItem newItem = new ExpandItem(blocks, SWT.NONE);
						newItem.setExpanded(true);
						newItem.setText(dialog.getFileName().substring(0, dialog.getFileName().length()-4));

						BdyPanel bdyPanel = new BdyPanel(blocks, SWT.NONE, bdy);
						newItem.setControl(bdyPanel);
						newItem.setHeight(bdyPanel.computeSize(SWT.DEFAULT, SWT.DEFAULT).y);
						meshes.add(bdy);
//						updateView();
//						bdyPanel.addObserver(JMeshingToolNew.this);
					} catch (Exception e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
				}
			}

			@Override
			public void widgetDefaultSelected(SelectionEvent arg0) {}
		});

		txtPath = new Text(composite_1, SWT.BORDER);
//		txtPath.setText(System.getProperty("user.dir"));
//		txtPath.setText("test");
		txtPath.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 4, 1));

		blocks = new ExpandBar(composite_1, SWT.NONE);
		blocks.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 4, 1));
		blocks.setSize(170, 484);
		/*
*/
		Composite composite = new Triangle( sashForm, SWT.NONE );

		sashForm.setWeights(new int[] {1,3});

		shell.open();

        while( !shell.isDisposed() ) {
            if( !display.readAndDispatch() )
                display.sleep();
        }

        composite.dispose();
        display.dispose();
	}

    public static void main( String [] args ) {
        new OneTriangleSWT();
    }
}