org.eclipse.edt.ide.ui.internal.dialogs.OptionalMessageDialog.java Source code

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Here is the source code for org.eclipse.edt.ide.ui.internal.dialogs.OptionalMessageDialog.java

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/*******************************************************************************
 * Copyright  2008, 2013 IBM Corporation and others.
 * 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
 *
 * Contributors:
 * IBM Corporation - initial API and implementation
 *
 *******************************************************************************/
package org.eclipse.edt.ide.ui.internal.dialogs;

import org.eclipse.edt.ide.ui.EDTUIPlugin;
import org.eclipse.edt.ide.ui.internal.UINlsStrings;
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;

/**
 * This is a <code>MessageDialog</code> which allows the user
 * to choose that the dialog isn't shown again the next time.
 */
public class OptionalMessageDialog extends MessageDialog {

    // String constants for widgets
    private static final String CHECKBOX_TEXT = UINlsStrings.OptionalMessageDialog_dontShowAgain;

    // Dialog store id constants
    private static final String STORE_ID = "OptionalMessageDialog.hide."; //$NON-NLS-1$

    public static final int NOT_SHOWN = IDialogConstants.CLIENT_ID + 1;

    private Button fHideDialogCheckBox;
    private String fId;

    /**
     * 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) {
        if (!isDialogEnabled(id))
            return OptionalMessageDialog.NOT_SHOWN;

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

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

    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));

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

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

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