/*******************************************************************************
 * Copyright (c) 2013 Association for Decentralized Information Management
 * in Industry THTH ry.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Semantum Oy - testcase for Simantics issue #3518 workaround
 *******************************************************************************/
package org.simantics.utils.ui;

import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Vector;

import javax.swing.JComponent;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;

import org.eclipse.swt.SWT;
import org.eclipse.swt.awt.SWT_AWT;
import org.eclipse.swt.custom.CTabFolder;
import org.eclipse.swt.custom.CTabItem;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.TabFolder;
import org.eclipse.swt.widgets.TabItem;

/**
 * See Eclipse bug 377104 (https://bugs.eclipse.org/bugs/show_bug.cgi?id=377104)
 * for original patches and ideas for this testcase.
 */
public class SWTAWTTest {

	public static void main(String[] args) {
		final Display display = Display.getDefault();

		tryCTabFolder();
		tryTabFolder();
		trySideBySide();

		display.addFilter(SWT.Activate, new Listener() {			
			@Override
			public void handleEvent(Event event) {
				System.out.println("SWT.Activate: " + event.widget + " (" + System.identityHashCode(event.widget) + ")");
			}
		});

		while (!display.isDisposed()) {
			if (!display.readAndDispatch()) {
				display.sleep();
				System.out.print(".");
			}
		}
	}

	private static void tryTabFolder() {
		Shell shell = new Shell();
		shell.setText("TabFolder");
		shell.setLayout(new FillLayout());
		TabFolder folder = new TabFolder(shell, SWT.NONE);
		for (int i = 0; i < 2; i++) {
			TabItem item = new TabItem(folder, SWT.NONE);
			item.setText("#" + i);
			item.setControl(openTable(folder));
		}
		folder.setSelection(0);

		folder = new TabFolder(shell, SWT.NONE);
		for (int i = 0; i < 2; i++) {
			TabItem item = new TabItem(folder, SWT.NONE);
			item.setText("#" + i);
			item.setControl(openTable(folder));
		}
		folder.setSelection(0);
		shell.open();
	}

	private static void tryCTabFolder() {
		Shell shell = new Shell();
		shell.setText("CTabFolder");
		shell.setLayout(new FillLayout());
		CTabFolder folder = new CTabFolder(shell, SWT.NONE);
		for (int i = 0; i < 2; i++) {
			CTabItem item = new CTabItem(folder, SWT.NONE);
			item.setText("#" + i);
			item.setControl(openTable(folder));
		}
		folder.setSelection(0);

		folder = new CTabFolder(shell, SWT.NONE);
		for (int i = 0; i < 2; i++) {
			CTabItem item = new CTabItem(folder, SWT.NONE);
			item.setText("#" + i);
			item.setControl(openTable(folder));
		}
		folder.setSelection(0);
		shell.open();
	}

	private static void trySideBySide() {
		Shell shell = new Shell();
		shell.setText("Side by Side (FillLayout)");
		shell.setLayout(new FillLayout());
		openTable(shell);
		openTable(shell);
		shell.open();
	}

	private static Control openTable(Composite outer) {
		final Composite parent = new Composite(outer, SWT.EMBEDDED);
		final Frame frame = SWT_AWT.new_Frame(parent);
		final Display display = outer.getDisplay();

		String ver = System.getProperty("java.version");
		if (ver.startsWith("1.7") || ver.startsWith("1.8"))
		{
			frame.addWindowListener(new WindowAdapter()
			{
				@Override
				public void windowActivated(WindowEvent e)
				{
					display.asyncExec(new Runnable()
					{
						@Override
						public void run()
						{
							if (display.getFocusControl() == parent)
							{
								try {
									Method m = Shell.class.getDeclaredMethod("setActiveControl", Control.class);
									boolean accessible = m.isAccessible();
									if (!accessible)
										m.setAccessible(true);
									m.invoke(parent.getShell(), parent);
									if (!accessible)
										m.setAccessible(false);
								} catch (SecurityException e) {
									e.printStackTrace();
								} catch (NoSuchMethodException e) {
									e.printStackTrace();
								} catch (IllegalArgumentException e) {
									e.printStackTrace();
								} catch (IllegalAccessException e) {
									e.printStackTrace();
								} catch (InvocationTargetException e) {
									e.getCause().printStackTrace();
								}
							}
						}
					});
				}
			});
		}

		SwingUtilities.invokeLater(new Runnable() {
			public void run() {
				//final InputContext input = frame.getInputContext();
				frame.add(createTable());

			}
		});
		return parent;
	}

	private static JComponent createTable() {
		/* Creating components */
		int nrows = 1000, ncolumns = 10;
		Vector<Object> rows = new Vector<Object>();
		for (int i = 0; i < nrows; i++) {
			Vector<Object> row = new Vector<Object>();
			for (int j = 0; j < ncolumns; j++) {
				row.addElement("Item " + i + "-" + j);
			}
			rows.addElement(row);
		}
		Vector<Object> columns = new Vector<Object>();
		for (int i = 0; i < ncolumns; i++) {
			columns.addElement("Column " + i);
		}
		JTable table = new JTable(rows, columns);
		table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
		table.createDefaultColumnsFromModel();
		JScrollPane scrollPane = new JScrollPane(table);
		return scrollPane;
	}

}