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Extension for usb4java which implements javax.usb (JSR-80).
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/*
 * Copyright (C) 2011 Klaus Reimer 
 * See LICENSE.md for licensing information.
 */

package org.usb4java.javax;

import java.util.ArrayList;
import java.util.List;

import javax.usb.UsbConfiguration;
import javax.usb.UsbConst;
import javax.usb.UsbControlIrp;
import javax.usb.UsbDeviceDescriptor;
import javax.usb.UsbException;
import javax.usb.UsbHub;
import javax.usb.UsbPort;
import javax.usb.UsbStringDescriptor;
import javax.usb.event.UsbDeviceListener;
import javax.usb.util.DefaultUsbControlIrp;

import org.usb4java.javax.descriptors.SimpleUsbDeviceDescriptor;

/**
 * The virtual USB root hub.
 *
 * @author Klaus Reimer ([email protected])
 */
final class RootHub implements UsbHub,
    UsbPorts
{
    /** The manufacturer string. */
    private static final String MANUFACTURER = "usb4java";

    /** The manufacturer string. */
    private static final String PRODUCT = "root hub";

    /** The serial number. */
    private static final String SERIAL_NUMBER = "1.0.0";

    /** The configurations. */
    private final List configurations =
            new ArrayList(1);

    /** The device descriptor. */
    private final UsbDeviceDescriptor descriptor =
        new SimpleUsbDeviceDescriptor(
            UsbConst.DESCRIPTOR_MIN_LENGTH_DEVICE,
            UsbConst.DESCRIPTOR_TYPE_DEVICE,
            (short) 0x101,
            UsbConst.HUB_CLASSCODE,
            (byte) 0,
            (byte) 0,
            (byte) 8,
            (short) 0xffff,
            (short) 0xffff,
            (byte) 0,
            (byte) 1,
            (byte) 2,
            (byte) 3,
            (byte) 1);

    /** The device listeners. */
    private final DeviceListenerList listeners = new DeviceListenerList();

    /** The root hub ports. */
    private final Ports rootPorts = new Ports(this);

    /**
     * Constructor.
     */
    RootHub()
    {
        this.configurations.add(new RootHubConfiguration(this));
    }

    @Override
    public UsbPort getParentUsbPort()
    {
        return null;
    }

    @Override
    public boolean isUsbHub()
    {
        return true;
    }

    @Override
    public String getManufacturerString()
    {
        return MANUFACTURER;
    }

    @Override
    public String getSerialNumberString()
    {
        return SERIAL_NUMBER;
    }

    @Override
    public String getProductString()
    {
        return PRODUCT;
    }

    @Override
    public Object getSpeed()
    {
        return UsbConst.DEVICE_SPEED_UNKNOWN;
    }

    @Override
    public List getUsbConfigurations()
    {
        return this.configurations;
    }

    @Override
    public UsbConfiguration getUsbConfiguration(final byte number)
    {
        if (number != 1) return null;
        return this.configurations.get(0);
    }

    @Override
    public boolean containsUsbConfiguration(final byte number)
    {
        return number == 1;
    }

    @Override
    public byte getActiveUsbConfigurationNumber()
    {
        return 1;
    }

    @Override
    public UsbConfiguration getActiveUsbConfiguration()
    {
        return this.configurations.get(0);
    }

    @Override
    public boolean isConfigured()
    {
        return true;
    }

    @Override
    public UsbDeviceDescriptor getUsbDeviceDescriptor()
    {
        return this.descriptor;
    }

    @Override
    public UsbStringDescriptor getUsbStringDescriptor(final byte index)
        throws UsbException
    {
        throw new UsbException(
            "Can't get USB string descriptor from virtual device");
    }

    @Override
    public String getString(final byte index) throws UsbException
    {
        throw new UsbException("Can't get string from virtual device");
    }

    @Override
    public void syncSubmit(final UsbControlIrp irp) throws UsbException
    {
        throw new UsbException("Can't syncSubmit on virtual device");
    }

    @Override
    public void asyncSubmit(final UsbControlIrp irp) throws UsbException
    {
        throw new UsbException("Can't asyncSubmit on virtual device");
    }

    @Override
    public void syncSubmit(final List list) throws UsbException
    {
        throw new UsbException("Can't syncSubmit on virtual device");
    }

    @Override
    public void asyncSubmit(final List list) throws UsbException
    {
        throw new UsbException("Can't asyncSubmit on virtual device");
    }

    @Override
    public UsbControlIrp createUsbControlIrp(final byte bmRequestType,
        final byte bRequest,
        final short wValue, final short wIndex)
    {
        return new DefaultUsbControlIrp(bmRequestType, bRequest, wValue,
            wIndex);
    }

    @Override
    public void addUsbDeviceListener(final UsbDeviceListener listener)
    {
        this.listeners.add(listener);
    }

    @Override
    public void removeUsbDeviceListener(final UsbDeviceListener listener)
    {
        this.listeners.remove(listener);
    }

    @Override
    public byte getNumberOfPorts()
    {
        return this.rootPorts.getNumberOfPorts();
    }

    @Override
    public List getUsbPorts()
    {
        return this.rootPorts.getUsbPorts();
    }

    @Override
    public Port getUsbPort(final byte number)
    {
        return this.rootPorts.getUsbPort(number);
    }

    @Override
    public List getAttachedUsbDevices()
    {
        return this.rootPorts.getAttachedUsbDevices();
    }

    @Override
    public boolean isUsbDeviceAttached(final AbstractDevice device)
    {
        return this.rootPorts.isUsbDeviceAttached(device);
    }

    @Override
    public boolean isRootUsbHub()
    {
        return true;
    }

    @Override
    public void connectUsbDevice(final AbstractDevice device)
    {
        this.rootPorts.connectUsbDevice(device);
    }

    @Override
    public void disconnectUsbDevice(final AbstractDevice device)
    {
        this.rootPorts.disconnectUsbDevice(device);
    }

    @Override
    public String toString()
    {
        return this.getManufacturerString() + " " + this.getProductString() + 
            " " + this.getSerialNumberString();
    }
}