org.jcryptool.commands.ui.eclipseconsole.CommandsUiStartup.java Source code

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Here is the source code for org.jcryptool.commands.ui.eclipseconsole.CommandsUiStartup.java

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// -----BEGIN DISCLAIMER-----
/*******************************************************************************
 * Copyright (c) 2011 JCrypTool Team and Contributors
 *
 * 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
 *******************************************************************************/
// -----END DISCLAIMER-----
package org.jcryptool.commands.ui.eclipseconsole;

import java.io.IOException;
import java.util.Observable;
import java.util.Observer;

import org.apache.commons.cli.ParseException;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.IStartup;
import org.eclipse.ui.console.ConsolePlugin;
import org.eclipse.ui.console.IConsole;
import org.eclipse.ui.console.IOConsole;
import org.eclipse.ui.console.IOConsoleOutputStream;
import org.jcryptool.commands.core.evaluator.CommandEvaluator;
import org.jcryptool.commands.ui.CommandsUIPlugin;
import org.jcryptool.commands.ui.eclipseconsole.console.IOConsolePromptShell;
import org.jcryptool.core.logging.utils.LogUtil;

public class CommandsUiStartup implements IStartup {

    private static final String PROMPT = Messages.CommandsUiStartup_prompt;

    public void earlyStartup() {
        final IOConsole ioConsole = new IOConsole(Messages.CommandsUiStartup_consolename, null);
        ioConsole.setConsoleWidth(0);
        ConsolePlugin.getDefault().getConsoleManager().addConsoles(new IConsole[] { ioConsole });
        CommandsUIPlugin.getDefault().setIoConsole(ioConsole);

        final CommandEvaluator evaluator = new CommandEvaluator();
        final IOConsolePromptShell monitor = new IOConsolePromptShell(ioConsole) {
            @Override
            protected void sendPrompt(final IOConsoleOutputStream o) throws IOException {
                Display.getDefault().syncExec(new Runnable() {
                    public void run() {
                        Color prevColor = o.getColor();
                        int prevStyle = o.getFontStyle();
                        o.setColor(Display.getDefault().getSystemColor(SWT.COLOR_RED));
                        try {
                            o.write(PROMPT);
                        } catch (IOException e) {
                            LogUtil.logError(CommandsUIPlugin.PLUGIN_ID, e);
                        }
                        o.setColor(prevColor);
                        o.setFontStyle(prevStyle);
                    }
                });
            }

            @Override
            protected void initializeConsole(IOConsoleOutputStream o) {
                super.initializeConsole(o);
                try {
                    o.write(Messages.CommandsUiStartup_welcome + Messages.CommandsUiStartup_welcome_tip);
                } catch (IOException e) {
                    LogUtil.logError(CommandsUIPlugin.PLUGIN_ID, e);
                }
            }
        };
        Observer monitorObserver = new Observer() {
            public void update(Observable o, Object arg) {
                String line = monitor.getLine();

                String result = Messages.CommandsUiStartup_eval_error;
                try {
                    result = evaluator.evaluate(line).getResult();
                } catch (ParseException e) {
                    LogUtil.logError(CommandsUIPlugin.PLUGIN_ID, e);
                }

                IOConsoleOutputStream outStream = ioConsole.newOutputStream();
                try {
                    outStream.write(result + "\n\n"); //$NON-NLS-1$
                } catch (IOException e) {
                    LogUtil.logError(CommandsUIPlugin.PLUGIN_ID, e);
                }

                try {
                    outStream.close();
                } catch (IOException e) {
                    LogUtil.logError(CommandsUIPlugin.PLUGIN_ID, e);
                }
            }
        };

        monitor.addObserver(monitorObserver);
        monitor.startMonitoring();
    }

}