Java DataFlavor.isRepresentationClassSerializable方法代码示例

import java.awt.datatransfer.DataFlavor; //导入方法依赖的package包/类
/**
 * Returns a Set of all DataFlavors for which
 * 1) a mapping from at least one of the specified formats exists in the
 * specified map and
 * 2) the data translation for this mapping can be performed by the data
 * transfer subsystem.
 *
 * @param formats the data formats
 * @param map the FlavorTable which contains mappings between
 *            DataFlavors and data formats
 * @throws NullPointerException if formats or map is {@code null}
 */
public Set<DataFlavor> getFlavorsForFormatsAsSet(long[] formats, FlavorTable map) {
    Set<DataFlavor> flavorSet = new HashSet<>(formats.length);

    for (long format : formats) {
        List<DataFlavor> flavors = map.getFlavorsForNative(getNativeForFormat(format));
        for (DataFlavor flavor : flavors) {
            // Don't explicitly test for String, since it is just a special
            // case of Serializable
            if (flavor.isFlavorTextType() ||
                    flavor.isFlavorJavaFileListType() ||
                    DataFlavor.imageFlavor.equals(flavor) ||
                    flavor.isRepresentationClassSerializable() ||
                    flavor.isRepresentationClassInputStream() ||
                    flavor.isRepresentationClassRemote()) {
                flavorSet.add(flavor);
            }
        }
    }

    return flavorSet;
}
 

import java.awt.datatransfer.DataFlavor; //导入方法依赖的package包/类
/**
 * Returns a Set of all DataFlavors for which
 * 1) a mapping from at least one of the specified formats exists in the
 * specified map and
 * 2) the data translation for this mapping can be performed by the data
 * transfer subsystem.
 *
 * @param formats the data formats
 * @param map the FlavorTable which contains mappings between
 *            DataFlavors and data formats
 * @throws NullPointerException if formats or map is <code>null</code>
 */
public Set getFlavorsForFormatsAsSet(long[] formats, FlavorTable map) {
    Set flavorSet = new HashSet(formats.length);

    for (int i = 0; i < formats.length; i++) {
        String nat = getNativeForFormat(formats[i]);
        List flavors = map.getFlavorsForNative(nat);

        for (Iterator iter = flavors.iterator(); iter.hasNext(); ) {
            DataFlavor flavor = (DataFlavor)iter.next();

            // Don't explicitly test for String, since it is just a special
            // case of Serializable
            if (flavor.isFlavorTextType() ||
                flavor.isFlavorJavaFileListType() ||
                DataFlavor.imageFlavor.equals(flavor) ||
                flavor.isRepresentationClassSerializable() ||
                flavor.isRepresentationClassInputStream() ||
                flavor.isRepresentationClassRemote())
            {
                flavorSet.add(flavor);
            }
        }
    }

    return flavorSet;
}
 

import java.awt.datatransfer.DataFlavor; //导入方法依赖的package包/类
/**
 * Returns a Map whose keys are all of the possible formats into which data
 * in the specified DataFlavors can be translated. The value of each key
 * is the DataFlavor in which the Transferable's data should be requested
 * when converting to the format.
 * <p>
 * The map keys are sorted according to the native formats preference
 * order.
 *
 * @param flavors the data flavors
 * @param map the FlavorTable which contains mappings between
 *            DataFlavors and data formats
 * @throws NullPointerException if flavors or map is {@code null}
 */
public SortedMap<Long, DataFlavor> getFormatsForFlavors(DataFlavor[] flavors,
                                                        FlavorTable map)
{
    Map<Long,DataFlavor> formatMap = new HashMap<>(flavors.length);
    Map<Long,DataFlavor> textPlainMap = new HashMap<>(flavors.length);
    // Maps formats to indices that will be used to sort the formats
    // according to the preference order.
    // Larger index value corresponds to the more preferable format.
    Map<Long, Integer> indexMap = new HashMap<>(flavors.length);
    Map<Long, Integer> textPlainIndexMap = new HashMap<>(flavors.length);

    int currentIndex = 0;

    // Iterate backwards so that preferred DataFlavors are used over
    // other DataFlavors. (See javadoc for
    // Transferable.getTransferDataFlavors.)
    for (int i = flavors.length - 1; i >= 0; i--) {
        DataFlavor flavor = flavors[i];
        if (flavor == null) continue;

        // Don't explicitly test for String, since it is just a special
        // case of Serializable
        if (flavor.isFlavorTextType() ||
            flavor.isFlavorJavaFileListType() ||
            DataFlavor.imageFlavor.equals(flavor) ||
            flavor.isRepresentationClassSerializable() ||
            flavor.isRepresentationClassInputStream() ||
            flavor.isRepresentationClassRemote())
        {
            List<String> natives = map.getNativesForFlavor(flavor);

            currentIndex += natives.size();

            for (String aNative : natives) {
                Long lFormat = getFormatForNativeAsLong(aNative);
                Integer index = currentIndex--;

                formatMap.put(lFormat, flavor);
                indexMap.put(lFormat, index);

                // SystemFlavorMap.getNativesForFlavor will return
                // text/plain natives for all text/*. While this is good
                // for a single text/* flavor, we would prefer that
                // text/plain native data come from a text/plain flavor.
                if (("text".equals(flavor.getPrimaryType()) &&
                        "plain".equals(flavor.getSubType())) ||
                        flavor.equals(DataFlavor.stringFlavor)) {
                    textPlainMap.put(lFormat, flavor);
                    textPlainIndexMap.put(lFormat, index);
                }
            }

            currentIndex += natives.size();
        }
    }

    formatMap.putAll(textPlainMap);
    indexMap.putAll(textPlainIndexMap);

    // Sort the map keys according to the formats preference order.
    Comparator<Long> comparator = DataFlavorUtil.getIndexOrderComparator(indexMap).reversed();
    SortedMap<Long, DataFlavor> sortedMap = new TreeMap<>(comparator);
    sortedMap.putAll(formatMap);

    return sortedMap;
}