/* Copyright (C) 2004 - 2008  Versant Inc.  http://www.db4o.com

This file is part of the sharpen open source java to c# translator.

sharpen is free software; you can redistribute it and/or modify it under
the terms of version 2 of the GNU General Public License as published
by the Free Software Foundation and as clarified by db4objects' GPL 
interpretation policy, available at
http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
Suite 350, San Mateo, CA 94403, USA.

sharpen is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. */

package sharpen.ui.dialogs;

import org.eclipse.core.resources.*;
import org.eclipse.jface.viewers.*;
import org.eclipse.jface.window.*;
import org.eclipse.swt.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.widgets.*;
import org.eclipse.ui.dialogs.*;
import org.eclipse.ui.views.navigator.*;

/**
  */
public class FolderSelectionDialog extends ElementTreeSelectionDialog implements ISelectionChangedListener {

	private Button fNewFolderButton;
	private IContainer fSelectedContainer;

	public FolderSelectionDialog(Shell parent, ILabelProvider labelProvider, ITreeContentProvider contentProvider) {
		super(parent, labelProvider, contentProvider);
		setComparator(new ResourceComparator(ResourceComparator.NAME));
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)
	 */
	protected Control createDialogArea(Composite parent) {
		Composite result= (Composite)super.createDialogArea(parent);
		
		getTreeViewer().addSelectionChangedListener(this);
		
		Button button = new Button(result, SWT.PUSH);
		button.setText("Select Output Folder"); 
		button.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent event) {
				newFolderButtonPressed();
			}
		});
		button.setFont(parent.getFont());
		fNewFolderButton= button;
		
		applyDialogFont(result);
		
		return result;
	}

	private void updateNewFolderButtonState() {
		IStructuredSelection selection= (IStructuredSelection) getTreeViewer().getSelection();
		fSelectedContainer= null;
		if (selection.size() == 1) {
			Object first= selection.getFirstElement();
			if (first instanceof IContainer) {
				fSelectedContainer= (IContainer) first;
			}
		}
		fNewFolderButton.setEnabled(fSelectedContainer != null);
	}	
	
	protected void newFolderButtonPressed() {
		NewFolderDialog dialog= new NewFolderDialog(getShell(), fSelectedContainer);
		if (dialog.open() == Window.OK) {
			TreeViewer treeViewer= getTreeViewer();
			treeViewer.refresh(fSelectedContainer);
			Object createdFolder= dialog.getResult()[0];
			treeViewer.reveal(createdFolder);
			treeViewer.setSelection(new StructuredSelection(createdFolder));
		}
	}
	
	/* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.ISelectionChangedListener#selectionChanged(org.eclipse.jface.viewers.SelectionChangedEvent)
	 */
	public void selectionChanged(SelectionChangedEvent event) {
		updateNewFolderButtonState();
	}
	


}