java类java.awt.datatransfer.SystemFlavorMap的实例源码

public boolean isNativeFormatAvailable(String nativeFormat) {
    if (nativeFormat == null) {
        return false;
    }
    if (nativeFormat.equals(FORMAT_TEXT)) {
        return (text != null);
    }
    if (nativeFormat.equals(FORMAT_FILE_LIST)) {
        return (fileList != null);
    }
    if (nativeFormat.equals(FORMAT_URL)) {
        return (url != null);
    }
    if (nativeFormat.equals(FORMAT_HTML)) {
        return (html != null);
    }
    if (nativeFormat.equals(FORMAT_IMAGE)) {
        return (rawBitmap != null);
    }
    try {
        DataFlavor df = SystemFlavorMap.decodeDataFlavor(nativeFormat);
        return serializedObjects.containsKey(df.getRepresentationClass());
    } catch (Exception e) {
        return false;
    }
}

private Object getSerializedObject(DataFlavor f)
        throws IOException, UnsupportedFlavorException {
    String nativeFormat = SystemFlavorMap.encodeDataFlavor(f);
    if ((nativeFormat == null) || 
            !data.isNativeFormatAvailable(nativeFormat)) {
        throw new UnsupportedFlavorException(f);
    }
    byte bytes[] = data.getSerializedObject(f.getRepresentationClass());
    if (bytes == null) {
        // awt.4F=Data is not available
        throw new IOException(Messages.getString("awt.4F")); //$NON-NLS-1$
    }
    ByteArrayInputStream str = new ByteArrayInputStream(bytes);
    try {
        return new ObjectInputStream(str).readObject();
    } catch (ClassNotFoundException ex) {
        throw new IOException(ex.getMessage());
    }
}

public static DataFlavor createDataFlavor(@Nonnull final String mimeType, @Nullable final Class<?> klass, final boolean register) {
  try {
    final DataFlavor flavor =
            klass != null ? new DataFlavor(mimeType + ";class=" + klass.getName(), null, klass.getClassLoader()) : new DataFlavor(mimeType);

    if (register) {
      final FlavorMap map = SystemFlavorMap.getDefaultFlavorMap();
      if (map instanceof SystemFlavorMap) {
        ((SystemFlavorMap)map).addUnencodedNativeForFlavor(flavor, mimeType);
      }
    }

    return flavor;
  }
  catch (ClassNotFoundException e) {
    LOG.error(e);
    //noinspection ConstantConditions
    return null;
  }
}

/**
 * Creates a new DropTarget given the <code>Component</code>
 * to associate itself with, an <code>int</code> representing
 * the default acceptable action(s) to
 * support, a <code>DropTargetListener</code>
 * to handle event processing, a <code>boolean</code> indicating
 * if the <code>DropTarget</code> is currently accepting drops, and
 * a <code>FlavorMap</code> to use (or null for the default <CODE>FlavorMap</CODE>).
 * <P>
 * The Component will receive drops only if it is enabled.
 * @param c         The <code>Component</code> with which this <code>DropTarget</code> is associated
 * @param ops       The default acceptable actions for this <code>DropTarget</code>
 * @param dtl       The <code>DropTargetListener</code> for this <code>DropTarget</code>
 * @param act       Is the <code>DropTarget</code> accepting drops.
 * @param fm        The <code>FlavorMap</code> to use, or null for the default <CODE>FlavorMap</CODE>
 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
 *            returns true
 * @see java.awt.GraphicsEnvironment#isHeadless
 */
public DropTarget(Component c, int ops, DropTargetListener dtl,
                  boolean act, FlavorMap fm)
    throws HeadlessException
{
    if (GraphicsEnvironment.isHeadless()) {
        throw new HeadlessException();
    }

    component = c;

    setDefaultActions(ops);

    if (dtl != null) try {
        addDropTargetListener(dtl);
    } catch (TooManyListenersException tmle) {
        // do nothing!
    }

    if (c != null) {
        c.setDropTarget(this);
        setActive(act);
    }

    if (fm != null) {
        flavorMap = fm;
    } else {
        flavorMap = SystemFlavorMap.getDefaultFlavorMap();
    }
}

/**
 * Deserializes this <code>DragSource</code>. This method first performs
 * default deserialization. Next, this object's <code>FlavorMap</code> is
 * deserialized by using the next object in the stream.
 * If the resulting <code>FlavorMap</code> is <code>null</code>, this
 * object's <code>FlavorMap</code> is set to the default FlavorMap for
 * this thread's <code>ClassLoader</code>.
 * Next, this object's listeners are deserialized by reading a
 * <code>null</code>-terminated sequence of 0 or more key/value pairs
 * from the stream:
 * <ul>
 * <li>If a key object is a <code>String</code> equal to
 * <code>dragSourceListenerK</code>, a <code>DragSourceListener</code> is
 * deserialized using the corresponding value object and added to this
 * <code>DragSource</code>.
 * <li>If a key object is a <code>String</code> equal to
 * <code>dragSourceMotionListenerK</code>, a
 * <code>DragSourceMotionListener</code> is deserialized using the
 * corresponding value object and added to this <code>DragSource</code>.
 * <li>Otherwise, the key/value pair is skipped.
 * </ul>
 *
 * @see java.awt.datatransfer.SystemFlavorMap#getDefaultFlavorMap
 * @since 1.4
 */
private void readObject(ObjectInputStream s)
  throws ClassNotFoundException, IOException {
    s.defaultReadObject();

    // 'flavorMap' was written explicitly
    flavorMap = (FlavorMap)s.readObject();

    // Implementation assumes 'flavorMap' is never null.
    if (flavorMap == null) {
        flavorMap = SystemFlavorMap.getDefaultFlavorMap();
    }

    Object keyOrNull;
    while (null != (keyOrNull = s.readObject())) {
        String key = ((String)keyOrNull).intern();

        if (dragSourceListenerK == key) {
            addDragSourceListener((DragSourceListener)(s.readObject()));
        } else if (dragSourceMotionListenerK == key) {
            addDragSourceMotionListener(
                (DragSourceMotionListener)(s.readObject()));
        } else {
            // skip value for unrecognized key
            s.readObject();
        }
    }
}

/**
 * Creates a new DropTarget given the <code>Component</code>
 * to associate itself with, an <code>int</code> representing
 * the default acceptable action(s) to
 * support, a <code>DropTargetListener</code>
 * to handle event processing, a <code>boolean</code> indicating
 * if the <code>DropTarget</code> is currently accepting drops, and
 * a <code>FlavorMap</code> to use (or null for the default <CODE>FlavorMap</CODE>).
 * <P>
 * The Component will receive drops only if it is enabled.
 * @param c         The <code>Component</code> with which this <code>DropTarget</code> is associated
 * @param ops       The default acceptable actions for this <code>DropTarget</code>
 * @param dtl       The <code>DropTargetListener</code> for this <code>DropTarget</code>
 * @param act       Is the <code>DropTarget</code> accepting drops.
 * @param fm        The <code>FlavorMap</code> to use, or null for the default <CODE>FlavorMap</CODE>
 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
 *            returns true
 * @see java.awt.GraphicsEnvironment#isHeadless
 */
public DropTarget(Component c, int ops, DropTargetListener dtl,
                  boolean act, FlavorMap fm)
    throws HeadlessException
{
    if (GraphicsEnvironment.isHeadless()) {
        throw new HeadlessException();
    }

    component = c;

    setDefaultActions(ops);

    if (dtl != null) try {
        addDropTargetListener(dtl);
    } catch (TooManyListenersException tmle) {
        // do nothing!
    }

    if (c != null) {
        c.setDropTarget(this);
        setActive(act);
    }

    if (fm != null) {
        flavorMap = fm;
    } else {
        flavorMap = SystemFlavorMap.getDefaultFlavorMap();
    }
}

/**
 * Deserializes this <code>DragSource</code>. This method first performs
 * default deserialization. Next, this object's <code>FlavorMap</code> is
 * deserialized by using the next object in the stream.
 * If the resulting <code>FlavorMap</code> is <code>null</code>, this
 * object's <code>FlavorMap</code> is set to the default FlavorMap for
 * this thread's <code>ClassLoader</code>.
 * Next, this object's listeners are deserialized by reading a
 * <code>null</code>-terminated sequence of 0 or more key/value pairs
 * from the stream:
 * <ul>
 * <li>If a key object is a <code>String</code> equal to
 * <code>dragSourceListenerK</code>, a <code>DragSourceListener</code> is
 * deserialized using the corresponding value object and added to this
 * <code>DragSource</code>.
 * <li>If a key object is a <code>String</code> equal to
 * <code>dragSourceMotionListenerK</code>, a
 * <code>DragSourceMotionListener</code> is deserialized using the
 * corresponding value object and added to this <code>DragSource</code>.
 * <li>Otherwise, the key/value pair is skipped.
 * </ul>
 *
 * @see java.awt.datatransfer.SystemFlavorMap#getDefaultFlavorMap
 * @since 1.4
 */
private void readObject(ObjectInputStream s)
  throws ClassNotFoundException, IOException {
    s.defaultReadObject();

    // 'flavorMap' was written explicitly
    flavorMap = (FlavorMap)s.readObject();

    // Implementation assumes 'flavorMap' is never null.
    if (flavorMap == null) {
        flavorMap = SystemFlavorMap.getDefaultFlavorMap();
    }

    Object keyOrNull;
    while (null != (keyOrNull = s.readObject())) {
        String key = ((String)keyOrNull).intern();

        if (dragSourceListenerK == key) {
            addDragSourceListener((DragSourceListener)(s.readObject()));
        } else if (dragSourceMotionListenerK == key) {
            addDragSourceMotionListener(
                (DragSourceMotionListener)(s.readObject()));
        } else {
            // skip value for unrecognized key
            s.readObject();
        }
    }
}

static String[] retrieveFormatsToTest() {
    SystemFlavorMap sfm = (SystemFlavorMap) SystemFlavorMap.getDefaultFlavorMap();
    java.util.List<String> ln = sfm.getNativesForFlavor(DataFlavor.imageFlavor);
    if (OSInfo.OSType.WINDOWS.equals(OSInfo.getOSType()) && !ln.contains("METAFILEPICT")) {
        // for test failing on JDK without this fix
        ln.add("METAFILEPICT");
    }
    return ln.toArray(new String[ln.size()]);
}

static public DataFlavor getByteDataFlavorForNative(String[] nats) {
    FlavorTable flavorTable = (FlavorTable) SystemFlavorMap.getDefaultFlavorMap();

    for (String nat : nats) {
        java.util.List<DataFlavor> flavors = flavorTable.getFlavorsForNative(nat);
        for (DataFlavor flavor : flavors) {
            if (flavor != null
                    && flavor.getRepresentationClass().equals(byte[].class)) {
                return flavor;
            }
        }
    }
    throw new RuntimeException("No data flavor was found for natives: " + Arrays.toString(nats));
}

/**
 * Creates a new DropTarget given the {@code Component}
 * to associate itself with, an {@code int} representing
 * the default acceptable action(s) to
 * support, a {@code DropTargetListener}
 * to handle event processing, a {@code boolean} indicating
 * if the {@code DropTarget} is currently accepting drops, and
 * a {@code FlavorMap} to use (or null for the default {@code FlavorMap}).
 * <P>
 * The Component will receive drops only if it is enabled.
 * @param c         The {@code Component} with which this {@code DropTarget} is associated
 * @param ops       The default acceptable actions for this {@code DropTarget}
 * @param dtl       The {@code DropTargetListener} for this {@code DropTarget}
 * @param act       Is the {@code DropTarget} accepting drops.
 * @param fm        The {@code FlavorMap} to use, or null for the default {@code FlavorMap}
 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
 *            returns true
 * @see java.awt.GraphicsEnvironment#isHeadless
 */
public DropTarget(Component c, int ops, DropTargetListener dtl,
                  boolean act, FlavorMap fm)
    throws HeadlessException
{
    if (GraphicsEnvironment.isHeadless()) {
        throw new HeadlessException();
    }

    component = c;

    setDefaultActions(ops);

    if (dtl != null) try {
        addDropTargetListener(dtl);
    } catch (TooManyListenersException tmle) {
        // do nothing!
    }

    if (c != null) {
        c.setDropTarget(this);
        setActive(act);
    }

    if (fm != null) {
        flavorMap = fm;
    } else {
        flavorMap = SystemFlavorMap.getDefaultFlavorMap();
    }
}