org.pwsafe.passwordsafeswt.dialog.LicenseDialog.java Source code

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Here is the source code for org.pwsafe.passwordsafeswt.dialog.LicenseDialog.java

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/*
 * $Id$
 * Copyright (c) 2008-2014 David Muller <roxon@users.sourceforge.net>.
 * All rights reserved. Use of the code is allowed under the
 * Artistic License 2.0 terms, as specified in the LICENSE file
 * distributed with this code, or available from
 * http://www.opensource.org/licenses/artistic-license-2.0.php
 */
package org.pwsafe.passwordsafeswt.dialog;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.MalformedURLException;
import java.net.URL;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.IMessageProvider;
import org.eclipse.jface.dialogs.TitleAreaDialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

/**
 * @author roxon
 * 
 */
public class LicenseDialog extends TitleAreaDialog {

    private static final Log LOG = LogFactory.getLog(LicenseDialog.class);

    public LicenseDialog(Shell parentShell) {
        super(parentShell);
        setShellStyle(getShellStyle() | SWT.RESIZE);
    }

    /**
     * Creates the dialog's contents
     * 
     * @param parent the parent composite
     * @return Control
     */
    @Override
    protected Control createContents(Composite parent) {
        Control contents = super.createContents(parent);

        // Set the title
        setTitle(Messages.getString("LicenseDialog.Title")); //$NON-NLS-1$

        // Set the message
        setMessage(Messages.getString("LicenseDialog.Message"), IMessageProvider.INFORMATION); //$NON-NLS-1$

        return contents;
    }

    @Override
    protected Control createDialogArea(Composite parent) {
        // create the top level composite for the dialog area
        final Composite composite = new Composite(parent, SWT.NONE);
        final GridLayout layout = new GridLayout();
        layout.marginHeight = 0;
        layout.marginWidth = 2;
        layout.verticalSpacing = 0;
        layout.horizontalSpacing = 0;
        composite.setLayout(layout);
        composite.setLayoutData(new GridData(GridData.FILL_BOTH));
        composite.setFont(parent.getFont());
        // Build the separator line
        final Label titleBarSeparator = new Label(composite, SWT.HORIZONTAL | SWT.SEPARATOR);
        titleBarSeparator.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

        final Group group = new Group(composite, SWT.NONE);
        group.setText(Messages.getString("LicenseDialog.LicenseLabel")); //$NON-NLS-1$
        group.setLayoutData(new GridData(GridData.FILL_BOTH));
        final GridLayout gridLayout_2 = new GridLayout();
        gridLayout_2.marginHeight = 5;
        group.setLayout(gridLayout_2);

        final Text txtLicence = new Text(group, SWT.V_SCROLL | SWT.H_SCROLL | SWT.READ_ONLY | SWT.MULTI);
        final GridData txtGrid = new GridData(SWT.FILL, SWT.CENTER, true, true);
        txtGrid.horizontalIndent = 6;
        txtGrid.minimumHeight = 300;
        txtGrid.minimumWidth = 300;
        txtLicence.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, true));

        // ColorRegistry colors = JFaceResources.getColorRegistry();
        // Color foreground = colors.get("WHITE");
        // Color background = colors.get("WHITE");
        //
        // if (foreground != null)
        // txtLicence.setForeground(foreground);
        // if (background != null)
        // txtLicence.setBackground(background);

        txtLicence.setText(getLicence().toString());

        return composite;
    }

    private StringBuilder getLicence() {
        final StringBuilder licence = new StringBuilder(2048);
        final String licenceFileName = "LICENSE"; //$NON-NLS-1$
        URL address = getClass().getResource("../" + licenceFileName); //$NON-NLS-1$
        if (address == null) {
            address = getClass().getResource(licenceFileName);
        }
        InputStream in = null;
        try {
            if (address == null) {
                address = new File(licenceFileName).toURI().toURL();
            }
            LOG.debug("License path " + address); //$NON-NLS-1$

            in = address.openStream();
            in = new BufferedInputStream(in);

            InputStreamReader inReader = null;
            inReader = new InputStreamReader(in, "UTF-8"); //$NON-NLS-1$
            while (true) {
                int c = inReader.read();
                if (c == -1)
                    break;
                licence.append((char) c);
            }
            inReader.close();
        } catch (MalformedURLException e) {
            LOG.error(e);
        } catch (UnsupportedEncodingException e1) {
            LOG.error(e1);

        } catch (IOException e) {
            LOG.error(e);
        } finally {
            if (in != null)
                try {
                    in.close();
                } catch (IOException e) {
                    LOG.warn("Exception on close" + e);
                }
        }
        return licence;
    }

    /**
     * Adds buttons to this dialog's button bar.
     * <p>
     * The <code>Dialog</code> implementation of this framework method adds
     * standard ok and cancel buttons using the <code>createButton</code>
     * framework method. These standard buttons will be accessible from
     * <code>getCancelButton</code>, and <code>getOKButton</code>. Subclasses
     * may override.
     * </p>
     * 
     * @param parent the button bar composite
     */
    @Override
    protected void createButtonsForButtonBar(Composite parent) {
        // create OK and Cancel buttons by default
        createButton(parent, IDialogConstants.OK_ID, IDialogConstants.OK_LABEL, true);

    }

}