eu.geclipse.ui.internal.preference.GEclipsePreferencePage.java Source code

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Here is the source code for eu.geclipse.ui.internal.preference.GEclipsePreferencePage.java

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/*****************************************************************************
 * Copyright (c) 2006, 2007 g-Eclipse Consortium 
 * 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
 *
 * Initial development of the original code was made for the
 * g-Eclipse project founded by European Union
 * project number: FP6-IST-034327  http://www.geclipse.eu/
 *
 * Contributors:
 *    Mathias Stuempert - initial API and implementation
 *****************************************************************************/

package eu.geclipse.ui.internal.preference;

import org.eclipse.jface.preference.PreferencePage;
import org.eclipse.jface.resource.ImageRegistry;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.program.Program;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Link;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;

import eu.geclipse.ui.internal.Activator;

/**
 * This class represents a preference page that is contributed to the
 * PreferenceConstants dialog. By subclassing <samp>FieldEditorPreferencePage</samp>,
 * we can use the field support built into JFace that allows us to create a page
 * that is small and knows how to save, restore and apply itself.
 * <p>
 * This page is used to modify preferences only. They are stored in the
 * preference store that belongs to the main plug-in class. That way,
 * preferences can be accessed directly via the preference store.
 */
public class GEclipsePreferencePage extends PreferencePage implements IWorkbenchPreferencePage {

    /**
     * Construct a new <code>GEclipsePreferencePage</code>.
     */
    public GEclipsePreferencePage() {
        super();
        setPreferenceStore(Activator.getDefault().getPreferenceStore());
        // setDescription("A demonstration of a preference page implementation");
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.preference.PreferencePage#createContents(org.eclipse.swt.widgets.Composite)
     */
    @Override
    protected Control createContents(final Composite parent) {

        initializeDialogUnits(parent);
        noDefaultAndApplyButton();
        Display display = Display.getCurrent();

        GridData gData;
        GridLayout layout;

        layout = new GridLayout(2, false);
        layout.marginHeight = 0;
        layout.marginWidth = 0;
        parent.setLayout(layout);

        Composite imgComp = new Composite(parent, SWT.NONE);
        layout = new GridLayout(1, false);
        layout.marginTop = 8;
        layout.marginLeft = 0;
        layout.marginRight = 0;
        imgComp.setLayout(layout);
        imgComp.setBackground(new Color(display, 255, 255, 255));
        gData = new GridData(GridData.FILL_VERTICAL);
        gData.grabExcessVerticalSpace = true;
        imgComp.setLayoutData(gData);

        ImageRegistry imgReg = Activator.getDefault().getImageRegistry();
        Image logo = imgReg.get("geclipse_logo_prefs"); //$NON-NLS-1$
        Label logoLabel = new Label(imgComp, SWT.TOP);
        logoLabel.setImage(logo);
        logoLabel.setBackground(new Color(display, 255, 255, 255));
        gData = new GridData();
        gData.horizontalAlignment = GridData.CENTER;
        gData.verticalAlignment = GridData.BEGINNING;
        logoLabel.setLayoutData(gData);

        Composite infoComp = new Composite(parent, SWT.NONE);
        gData = new GridData(GridData.FILL_BOTH);
        gData.grabExcessHorizontalSpace = true;
        gData.grabExcessVerticalSpace = true;
        infoComp.setLayoutData(gData);

        layout = new GridLayout(1, false);
        infoComp.setLayout(layout);

        Label infoLabel1 = new Label(infoComp, SWT.LEFT);
        infoLabel1.setText("These are the preferences for the g-Eclipse plugin"); //$NON-NLS-1$
        infoLabel1.setFont(new Font(display, "Arial", 10, SWT.BOLD)); //$NON-NLS-1$
        gData = new GridData();
        gData.verticalAlignment = GridData.BEGINNING;
        gData.verticalIndent = 24;
        infoLabel1.setLayoutData(gData);

        Label infoLabel2 = new Label(infoComp, SWT.LEFT);
        infoLabel2.setText("To change specific preferences of g-Eclipse\nchoose from the tree on the left."); //$NON-NLS-1$
        gData = new GridData(GridData.FILL_VERTICAL);
        gData.verticalAlignment = GridData.BEGINNING;
        gData.verticalIndent = 12;
        gData.grabExcessVerticalSpace = true;
        infoLabel2.setLayoutData(gData);

        Link geclLink = new Link(infoComp, SWT.LEFT);
        geclLink.setText("Find us at <a href=\"http://www.geclipse.eu\">www.geclipse.eu</a>."); //$NON-NLS-1$
        gData = new GridData();
        gData.verticalAlignment = GridData.END;
        gData.verticalIndent = 12;
        geclLink.setLayoutData(gData);
        geclLink.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(final SelectionEvent e) {
                String href = e.text;
                Program.launch(href);
            }
        });

        return parent;

    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
     */
    public void init(final IWorkbench workbench) {
        // Nothing to do here
    }

}