com.nokia.tools.startuptip.ui.StartupTipDialog.java Source code

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Here is the source code for com.nokia.tools.startuptip.ui.StartupTipDialog.java

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/*
* Copyright (c) 2006-2010 Nokia Corporation and/or its subsidiary(-ies). 
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of "Eclipse Public License v1.0"
* which accompanies this distribution, and is available
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description:
*
*/

package com.nokia.tools.startuptip.ui;

import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.TrayDialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.browser.Browser;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;

import com.nokia.tools.startuptip.Settings;
import com.nokia.tools.startuptip.TipSelector;
import com.nokia.tools.startuptip.branding.BrandingUtil;
import com.nokia.tools.startuptip.preferences.StartupTipPreferences;

/**
 * The specialized startup tip dialog which shows the tips on startup.
 * 
 */
public class StartupTipDialog extends TrayDialog {

    private static final int PREVIOUS_ID = -1;
    private static final String PREVIOUS_LABEL = Messages.STARTUP_TIP_DIALOG_NEXT_LABEL;
    private Browser tipBrowser;
    private Button showSTipsOnStartup;
    private TipSelector tipSelector;
    private Image titlebarImage;

    /**
     * Creates the instance of <code>StartupTipDialog</code>. Invoke
     * <code>open()</code> method to display the dialog.
     * 
     * @param parent
     */
    public StartupTipDialog(Shell parent) {
        super(parent);
        tipBrowser = new Browser(parent, SWT.NONE);
    }

    @Override
    protected Control createDialogArea(Composite parent) {

        Composite area = (Composite) super.createDialogArea(parent);
        GridLayout layout = new GridLayout();
        layout.marginBottom = 0;
        layout.marginHeight = 0;
        area.setLayout(layout);

        Composite container = new Composite(area, SWT.NONE);
        container.setLayoutData(new GridData(GridData.FILL_BOTH));

        setHelpAvailable(false);

        layout = new GridLayout();
        container.setLayout(layout);

        tipBrowser = new Browser(container, SWT.NONE);
        GridData gd = new GridData(GridData.FILL_HORIZONTAL);
        tipBrowser.setLayoutData(gd);
        int width = Integer.parseInt(Settings.STARTUP_TIP_DIALOG_WIDTH);
        int height = Integer.parseInt(Settings.STARTUP_TIP_DIALOG_HEIGHT);
        tipBrowser.setSize(width, height);

        tipSelector = new TipSelector();
        tipBrowser.setUrl(tipSelector.getNextTip());

        showSTipsOnStartup = new Button(container, SWT.CHECK);
        showSTipsOnStartup.setText(Messages.SHOW_TIP_ON_STARTUP);
        showSTipsOnStartup.setEnabled(true);
        showSTipsOnStartup.setSelection(StartupTipPreferences.getInstance().showTipOnStartup());

        showSTipsOnStartup.addSelectionListener(new SelectionListener() {

            public void widgetDefaultSelected(SelectionEvent e) {

            }

            public void widgetSelected(SelectionEvent e) {
                StartupTipPreferences.getInstance().setShowTipOnStartup(((Button) e.getSource()).getSelection());

            }
        });
        gd = new GridData();
        //gd.
        showSTipsOnStartup.setLayoutData(gd);

        Label separator = new Label(area, SWT.HORIZONTAL | SWT.SEPARATOR);
        separator.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

        getShell().setText(Messages.STARTUP_TIP_DIALOG_TITLE);
        getShell().setImage(titlebarImage = BrandingUtil.getDialogTitleBarImage());
        return area;

    }

    @Override
    protected void buttonPressed(int buttonId) {
        if (IDialogConstants.OK_ID == buttonId) {
            okPressed();
        } else if (IDialogConstants.NEXT_ID == buttonId) {
            nextPressed();
        } else if (StartupTipDialog.PREVIOUS_ID == buttonId) {
            previousPressed();
        }
    }

    private void previousPressed() {
        tipBrowser.setUrl(tipSelector.getPreviousTip());
        if (!tipSelector.previousAvailable()) {
            previousButton.setEnabled(false);
        }

    }

    protected void nextPressed() {
        tipBrowser.setUrl(tipSelector.getNextTip());
        previousButton.setEnabled(true);

    }

    private Button previousButton;

    @Override
    protected void createButtonsForButtonBar(Composite parent) {
        previousButton = createButton(parent, StartupTipDialog.PREVIOUS_ID, StartupTipDialog.PREVIOUS_LABEL, false);
        if (!tipSelector.previousAvailable()) {
            previousButton.setEnabled(false);
        }
        createButton(parent, IDialogConstants.NEXT_ID, IDialogConstants.NEXT_LABEL, false);
        createButton(parent, IDialogConstants.OK_ID, IDialogConstants.OK_LABEL, true);
    }

    @Override
    public boolean close() {
        Browser.clearSessions();
        tipBrowser = null;
        if (titlebarImage != null) {
            titlebarImage.dispose();
        }
        return super.close();
    }
}