ErrorDialog.java

/*
 * Copyright (C) 2008 Clam <clamisgood@gmail.com>
 * Copyright (C) 2011 IsmAvatar <IsmAvatar@gmail.com>
 * Copyright (C) 2014 Robert B. Colton
 *
 * This file is part of LateralGM.
 * LateralGM is free software and comes with ABSOLUTELY NO WARRANTY.
 * See LICENSE for details.
 */

package org.lateralgm.components;

import java.awt.Desktop;
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.Toolkit;
import java.awt.datatransfer.StringSelection;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

import org.lateralgm.main.LGM;
import org.lateralgm.main.Prefs;
import org.lateralgm.messages.Messages;

public class ErrorDialog extends JDialog implements ActionListener
	{
	private static final long serialVersionUID = 1L;
	private static final int DEBUG_HEIGHT = 200;
	private static ErrorDialog INSTANCE = null;

	private String submitURI = Prefs.issueURI;
	protected JTextArea debugInfo;
	protected JButton copy;
	protected JButton submit;
	protected JButton cancel;
	protected JScrollPane scroll;
	protected JOptionPane optionpane;

	public static ErrorDialog getInstance()
		{
			if (INSTANCE == null) {
				INSTANCE = new ErrorDialog(LGM.frame,
						Messages.getString("ErrorDialog.UNCAUGHT_TITLE"), //$NON-NLS-1$
						Messages.getString("ErrorDialog.UNCAUGHT_MESSAGE"), //$NON-NLS-1$
						Prefs.issueURI); //$NON-NLS-1$
			}
			return INSTANCE;
		}

	public static String generateAgnosticInformation()
		{
		String ret = "Operating System: " + System.getProperty("os.name");
		ret += "\nVersion: " + System.getProperty("os.version");
		ret += "\nArchitecture: " + System.getProperty("os.arch");

		ret += "\n\nJava Name: " + System.getProperty("java.vm.name");
		ret += "\nJava Vendor: " + System.getProperty("java.vendor");
		ret += "\nVersion: " + System.getProperty("java.version");

		ret += "\n\nAvailable processors (cores): " + Runtime.getRuntime().availableProcessors();
		ret += "\nFree memory (bytes): " + Runtime.getRuntime().freeMemory();
		long maxMemory = Runtime.getRuntime().maxMemory();
		ret += "\nMaximum memory (bytes): " + (maxMemory == Long.MAX_VALUE ? "no limit" : maxMemory);
		ret += "\nTotal memory available to JVM (bytes): " + Runtime.getRuntime().totalMemory();

		/* Get a list of all filesystem roots on this system */
		File[] roots = File.listRoots();

		/* For each filesystem root, print some info */
		for (File root : roots)
			{
			ret += "\n\nFile system root: " + root.getAbsolutePath();
			ret += "\nTotal space (bytes): " + root.getTotalSpace();
			ret += "\nFree space (bytes): " + root.getFreeSpace();
			ret += "\nUsable space (bytes): " + root.getUsableSpace();
			}

		ret += "\n\nStack trace:";
		return ret;
		}

	public void setMessage(String message)
		{
		optionpane.setMessage(new Object[] { message, scroll });
		}

	public void setDebugInfo(String text)
		{
		debugInfo.setText("\n" + text);
		debugInfo.setCaretPosition(0);
		}

	public void setDebugInfo(Throwable e)
		{
		debugInfo.setText("\n" + throwableToString(e));
		debugInfo.setCaretPosition(0);
		}

	public void appendDebugInfo(String text)
		{
		debugInfo.append("\n" + text);
		}

	public void appendDebugInfo(Throwable e)
		{
		debugInfo.append("\n" + throwableToString(e));
		}

	private static JButton makeButton(String key, ActionListener listener)
		{
		JButton but = new JButton(Messages.getString(key),LGM.getIconForKey(key));
		but.addActionListener(listener);
		return but;
		}

	public ErrorDialog(Frame parent, String title, String message, String url)
		{
		this(parent,title,message,"",url);
		}

	public ErrorDialog(Frame parent, String title, String message, Throwable e, String url)
		{
		this(parent,title,message,throwableToString(e),url);
		}

	public ErrorDialog(Frame parent, String title, String message, Throwable e)
		{
		this(parent,title,message,throwableToString(e),Prefs.issueURI);
		}

	public ErrorDialog(Frame parent, String title, String message, String debugText, String uri)
		{
		super(parent, title);
		setResizable(false);
		setModalExclusionType(ModalExclusionType.TOOLKIT_EXCLUDE);
		submitURI = uri;

		this.debugInfo = new JTextArea();
		debugInfo.setEditable(false);
		// show the caret anyway
		debugInfo.addFocusListener(new FocusListener() {

		@Override
		public void focusGained(FocusEvent e)
		{
			debugInfo.getCaret().setVisible(true);
			debugInfo.getCaret().setSelectionVisible(true);
		}

		@Override
		public void focusLost(FocusEvent e)
		{
			debugInfo.getCaret().setVisible(false);
			debugInfo.getCaret().setSelectionVisible(false);
		}

		});
		debugInfo.setText(ErrorDialog.generateAgnosticInformation());
		this.appendDebugInfo(debugText);
		scroll = new JScrollPane(debugInfo);

		Dimension dim = new Dimension(scroll.getWidth(),DEBUG_HEIGHT);
		scroll.setPreferredSize(dim);
		copy = makeButton("ErrorDialog.COPY",this); //$NON-NLS-1$
		submit = makeButton("ErrorDialog.SUBMIT",this); //$NON-NLS-1$
		cancel = makeButton("ErrorDialog.CANCEL",this); //$NON-NLS-1$

		dim = new Dimension(Math.max(copy.getPreferredSize().width, cancel.getPreferredSize().width),
			copy.getPreferredSize().height);
		submit.setPreferredSize(dim);
		copy.setPreferredSize(dim);
		cancel.setPreferredSize(dim);
		optionpane = new JOptionPane(new Object[] { message, scroll },
			JOptionPane.ERROR_MESSAGE, JOptionPane.DEFAULT_OPTION, null,
			new JButton[] { copy, submit, cancel });
		setContentPane(optionpane);
		setSize(640, 480);
		setLocationRelativeTo(parent);
		}

	protected static String throwableToString(Throwable e)
		{
		StringWriter sw = new StringWriter();
		e.printStackTrace(new PrintWriter(sw));
		return sw.toString();
		}

	public void actionPerformed(ActionEvent e)
		{
		if (e.getSource() == submit)
			{
			try
				{
					Desktop.getDesktop().browse(java.net.URI.create(submitURI));
				}
			catch (IOException e1)
				{
					JOptionPane.showMessageDialog(this,
						Messages.format("ErrorDialog.DESKTOP_MESSAGE", submitURI),
						Messages.getString("ErrorDialog.DESKTOP_TITLE"), JOptionPane.ERROR_MESSAGE);
				}
			}
		else if (e.getSource() == copy)
			{
			Toolkit.getDefaultToolkit().getSystemClipboard().setContents(
				new StringSelection(debugInfo.getText()), null);
			}
		else if (e.getSource() == cancel)
			{
			dispose();
			}

		}
	}