org.openscada.sec.ui.CallbackDialog.java Source code

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Here is the source code for org.openscada.sec.ui.CallbackDialog.java

Source

/*
 * This file is part of the openSCADA project
 * 
 * Copyright (C) 2013 Jens Reimann (ctron@dentrassi.de)
 *
 * openSCADA is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * openSCADA is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with openSCADA. If not, see
 * <http://opensource.org/licenses/lgpl-3.0.html> for a copy of the LGPLv3 License.
 */

package org.openscada.sec.ui;

import java.util.List;

import org.eclipse.core.databinding.DataBindingContext;
import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.TitleAreaDialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
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.Shell;

public class CallbackDialog extends TitleAreaDialog {
    private final List<CallbackWidgetFactory> factories;

    private DataBindingContext dbc;

    public CallbackDialog(final Shell parentShell, final List<CallbackWidgetFactory> callbacks) {
        super(parentShell);
        this.factories = callbacks;
    }

    public boolean openDialog() {
        if (this.factories.isEmpty()) {
            return false;
        } else {
            open();
            return true;
        }
    }

    @Override
    protected Control createDialogArea(final Composite parent) {
        final Composite wrapper = (Composite) super.createDialogArea(parent);

        initializeDialogUnits(wrapper);
        final Composite contents = createComposite(wrapper);
        contents.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
        Dialog.applyDialogFont(wrapper);

        return wrapper;
    }

    private Composite createComposite(final Composite wrapper) {
        this.dbc = new DataBindingContext(SWTObservables.getRealm(wrapper.getDisplay()));

        wrapper.addDisposeListener(new DisposeListener() {

            @Override
            public void widgetDisposed(final DisposeEvent e) {
                CallbackDialog.this.dbc.dispose();
            }
        });

        final Composite composite = new Composite(wrapper, SWT.NONE);
        composite.setLayout(new GridLayout(2, false));

        for (final CallbackWidgetFactory factory : this.factories) {
            factory.createGridWidgets(this.dbc, composite);
        }

        return composite;
    }

    @Override
    protected void okPressed() {
        for (final CallbackWidgetFactory factory : this.factories) {
            factory.complete();
        }
        super.okPressed();
    }
}