java.awt.datatransfer.SystemFlavorMap#getFlavorsForNatives ( )源码实例Demo

public void doTest() throws Exception {
    // Initialize DataFlavors and arrays used for test data
    initMappings();

    boolean passed = true;
    flavorMap = (SystemFlavorMap)SystemFlavorMap.getDefaultFlavorMap();

    // Get all the native strings and preferred DataFlavor mappings
    hash = new Hashtable(flavorMap.getFlavorsForNatives(null));
    hashSize = hash.size();

    // GetNativesForFlavor using unknown DataFlavor (verify 2-way mapping)
    //
    // If a new DataFlavor is specified, the method should establish a mapping
    // in both directions between specified DataFlavor and an encoded
    // version of its MIME type as its native.
    System.out.println("GetNativesForFlavor using new DataFlavor");

    comp1 = new Vector(Arrays.asList(test_natives_set));
    comp2 = new Vector(flavorMap.getNativesForFlavor(test_flavor1));

    comp3 = new Vector(Arrays.asList(test_flavors_set));
    comp4 = new Vector(flavorMap.getFlavorsForNative(test_encoded));

    if ( !comp1.equals(comp2) || !comp3.equals(comp4) ) {
        throw new RuntimeException("\n*** After passing a new DataFlavor" +
            "\nwith getNativesForFlavor(DataFlavor flav)" +
            "\nthe mapping in both directions was not established.");
    }
    else
       System.out.println("GetNativesForFlavor using new DataFlavor: Test Passes");
}
 

public void doTest() {
    flavorMap = (SystemFlavorMap)SystemFlavorMap.getDefaultFlavorMap();

    // Get SystemFlavorMap Maps of String Natives and DataFlavors
    mapFlavors = flavorMap.getNativesForFlavors(null);
    mapNatives = flavorMap.getFlavorsForNatives(null);

    hashFlavors = new Hashtable(mapFlavors);
    hashNatives = new Hashtable(mapNatives);

    // Assertion: Verify getNativesForFlavors(null) is returning the full list
    //            of String Native entries
    List listNatives = flavorMap.getNativesForFlavor(null);
    verifyListAllNativeEntries(listNatives);

    // Assertion: Verify getFlavorsForNatives(null) is returning the full list
    //            of DataFlavor entries
    List listFlavors = flavorMap.getFlavorsForNative(null);
    verifyListAllDataFlavorEntries(listFlavors);

    // Assertion: Verify getNativesForFlavor(DataFlavor flav) is returning the list
    //            of Native Strings (for all supported DataFlavors)
    //
    //            Verify that the first list item is the most preferred Native
    verifyListNativeEntries();

    // Assertion: Verify getFlavorsForNative(String nat) is returning the list
    //            of DataFlavors(for all supported natives)
    //
    //            Verify that the first list item is the most preferred DataFlavor
    verifyListDataFlavorEntries();
}
 

public void doTest() {
    flavorMap = (SystemFlavorMap)SystemFlavorMap.getDefaultFlavorMap();

    // Get SystemFlavorMap Maps of String Natives and DataFlavors
    mapFlavors = flavorMap.getNativesForFlavors(null);
    mapNatives = flavorMap.getFlavorsForNatives(null);

    hashFlavors = new Hashtable(mapFlavors);
    hashNatives = new Hashtable(mapNatives);


    // Test setFlavorsForNative(String nat, DataFlavors[] flavors);
    //
    // Enumerate through all the system defined String natives,
    // and for each String native, define it again to the SystemFlavorMap
    // with a slightly modified String native (name).
    //
    // For verification, a seperate Hashtable will be maintained of the additions.
    String key;
    hashVerify = new Hashtable();

    for (Enumeration e = hashNatives.keys() ; e.hasMoreElements() ;) {
        key = (String)e.nextElement();

        java.util.List listFlavors = flavorMap.getFlavorsForNative(key);
        Vector vectorFlavors = new Vector(listFlavors);
        DataFlavor[] arrayFlavors = (DataFlavor[])vectorFlavors.toArray(new DataFlavor[0]);

        key = key.concat("TEST");   // construct a unique String native
                                    // define the new String native entry
        flavorMap.setFlavorsForNative(key, arrayFlavors);
                                    // keep track of this new native entry
        hashVerify.put(key, vectorFlavors);
    }

    // After establishing "new" mappings, verify that the defined
    // DataFlavors can be retrieved and that the List (order) is preserved.
    verifyNewMappings();
}