com.nokia.tools.variant.common.ui.dialogs.OptionalMessageDialog.java Source code

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Here is the source code for com.nokia.tools.variant.common.ui.dialogs.OptionalMessageDialog.java

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/*
 * Copyright (c) 2009 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: This file is part of com.nokia.tools.variant.common.ui component.
 */

package com.nokia.tools.variant.common.ui.dialogs;

import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.IDialogSettings;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
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.Shell;

import com.nokia.tools.variant.common.ui.CommonUIPlugin;

/**
 * This is a {@link MessageDialog} which allows the user to choose that the
 * dialog isn't shown again the next time.
 * 
 * The original code is taken from JDT.
 * 
 */
public class OptionalMessageDialog extends MessageDialog {

    // String constants for widgets
    private static final String CHECKBOX_TEXT = "Do not show again";

    /** Constant for the configuration store prefix */
    private static final String STORE_ID = "OptionalMessageDialog.hide."; //$NON-NLS-1$

    /** Status code indicating the "not shown" dialog result */
    public static final int NOT_SHOWN = IDialogConstants.CLIENT_ID + 1;

    private final String id;
    private final String checkBoxText;
    private Button hideDialogCheckBox;

    /**
     * Opens the dialog but only if the user hasn't choosen to hide it. Returns
     * <code>NOT_SHOWN</code> if the dialog was not shown.
     */
    public static int open(String id, Shell parent, String title, Image titleImage, String message, int dialogType,
            String[] buttonLabels, int defaultButtonIndex) {
        return open(id, parent, title, titleImage, message, dialogType, buttonLabels, defaultButtonIndex,
                CHECKBOX_TEXT);
    }

    public static int open(String id, Shell parent, String title, Image titleImage, String message, int dialogType,
            String[] buttonLabels, int defaultButtonIndex, String checkboxText) {
        if (!isDialogEnabled(id))
            return OptionalMessageDialog.NOT_SHOWN;

        MessageDialog dialog = new OptionalMessageDialog(id, parent, title, titleImage, message, dialogType,
                buttonLabels, defaultButtonIndex, checkboxText);
        return dialog.open();
    }

    protected OptionalMessageDialog(String id, Shell parent, String title, Image titleImage, String message,
            int dialogType, String[] buttonLabels, int defaultButtonIndex) {
        this(id, parent, title, titleImage, message, dialogType, buttonLabels, defaultButtonIndex, CHECKBOX_TEXT);
    }

    protected OptionalMessageDialog(String id, Shell parent, String title, Image titleImage, String message,
            int dialogType, String[] buttonLabels, int defaultButtonIndex, String checkBoxText) {
        super(parent, title, titleImage, message, dialogType, buttonLabels, defaultButtonIndex);
        this.id = id;
        this.checkBoxText = checkBoxText;
    }

    protected Control createCustomArea(Composite parent) {
        Composite composite = new Composite(parent, SWT.NONE);
        GridLayout layout = new GridLayout();
        layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
        layout.marginWidth = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
        layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
        composite.setLayout(layout);
        composite.setLayoutData(new GridData(GridData.FILL_BOTH));

        hideDialogCheckBox = new Button(composite, SWT.CHECK | SWT.LEFT);
        hideDialogCheckBox.setText(checkBoxText);
        hideDialogCheckBox.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent e) {
                setDialogEnabled(id, !((Button) e.widget).getSelection());
            }
        });
        applyDialogFont(hideDialogCheckBox);
        return hideDialogCheckBox;
    }

    // --------------- Configuration handling --------------

    /**
     * Returns this dialog
     * 
     * @return the settings to be used
     */
    private static IDialogSettings getDialogSettings() {
        IDialogSettings settings = CommonUIPlugin.getDefault().getDialogSettings();
        settings = settings.getSection(STORE_ID);
        if (settings == null)
            settings = CommonUIPlugin.getDefault().getDialogSettings().addNewSection(STORE_ID);
        return settings;
    }

    /**
     * Answers whether the optional dialog is enabled and should be shown.
     */
    public static boolean isDialogEnabled(String key) {
        IDialogSettings settings = getDialogSettings();
        return !settings.getBoolean(key);
    }

    /**
     * Sets whether the optional dialog is enabled and should be shown.
     */
    public static void setDialogEnabled(String key, boolean isEnabled) {
        IDialogSettings settings = getDialogSettings();
        settings.put(key, !isEnabled);
    }

    /**
     * Clears all remembered information about hidden dialogs
     */
    public static void clearAllRememberedStates() {
        IDialogSettings settings = CommonUIPlugin.getDefault().getDialogSettings();
        settings.addNewSection(STORE_ID);
    }
}