gov.redhawk.ui.port.nxmblocks.SddsNxmBlockControls.java Source code

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Here is the source code for gov.redhawk.ui.port.nxmblocks.SddsNxmBlockControls.java

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/**
 * This file is protected by Copyright.
 * Please refer to the COPYRIGHT file distributed with this source distribution.
 *
 * This file is part of REDHAWK IDE.
 *
 * 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.
 *
 */
package gov.redhawk.ui.port.nxmblocks;

import java.nio.ByteOrder;

import org.eclipse.core.databinding.DataBindingContext;
import org.eclipse.core.databinding.beans.PojoProperties;
import org.eclipse.core.databinding.observable.value.IObservableValue;
import org.eclipse.jface.databinding.viewers.ViewerProperties;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.ComboViewer;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;

/**
 * Adjust/override SDDS NXM block settings user entry dialog.
 * @noreference This class is provisional/beta and is subject to API changes
 * @since 4.4
 */
public class SddsNxmBlockControls {

    private final SddsNxmBlockSettings settings;
    private final DataBindingContext dataBindingCtx;

    // widgets
    private ComboViewer dataByteOrderField;

    public SddsNxmBlockControls(SddsNxmBlockSettings settings, DataBindingContext dataBindingCtx) {
        this.settings = settings;
        this.dataBindingCtx = dataBindingCtx;
    }

    public void createControls(final Composite container) {
        container.setLayout(new GridLayout(2, false));
        Label label;

        // === data byte order ===
        label = new Label(container, SWT.NONE);
        label.setText("Data Byte Order:");
        this.dataByteOrderField = new ComboViewer(container, SWT.READ_ONLY);
        this.dataByteOrderField.getCombo().setLayoutData(GridDataFactory.fillDefaults().grab(true, false).create());
        this.dataByteOrderField.getCombo()
                .setToolTipText("Custom data byte order to override value in SDDS packets.");
        this.dataByteOrderField.setContentProvider(ArrayContentProvider.getInstance()); // ArrayContentProvider does not store any state, therefore can re-use instances
        this.dataByteOrderField.setLabelProvider(new LabelProvider());
        this.dataByteOrderField.setInput(new ByteOrder[] { ByteOrder.BIG_ENDIAN, ByteOrder.LITTLE_ENDIAN });

        addDataBindings();
    }

    protected void addDataBindings() {
        IObservableValue boTargetObservableValue = ViewerProperties.singleSelection()
                .observe(this.dataByteOrderField);
        IObservableValue boModelObservableValue = PojoProperties.value(SddsNxmBlockSettings.PROP_DATA_BYTE_ORDER)
                .observe(this.settings);
        dataBindingCtx.bindValue(boTargetObservableValue, boModelObservableValue);
    }

}