Examples of ae.java.awt.datatransfer.DataFlavor

ae.java.awt.datatransfer.DataFlavor
etf.org/rfc/rfc2045.txt">RFC 2045 and RFC 2046. A content type is typically referred to as a MIME type.
A content type consists of a media type (referred to as the primary type), a subtype, and optional parameters. See RFC 2045 for details on the syntax of a MIME type.
The JRE data transfer implementation interprets the parameter "class" of a MIME type as a representation class. The representation class reflects the class of the object being transferred. In other words, the representation class is the type of object returned by {@link Transferable#getTransferData}. For example, the MIME type of {@link #imageFlavor} is{@code "image/x-java-image;class=ae.java.awt.Image"}, the primary type is {@code image}, the subtype is {@code x-java-image}, and the representation class is {@code ae.java.awt.Image}. When {@code getTransferData} is invokedwith a {@code DataFlavor} of {@code imageFlavor}, an instance of {@code ae.java.awt.Image} is returned.It's important to note that {@code DataFlavor} does no error checkingagainst the representation class. It is up to consumers of {@code DataFlavor}, such as {@code Transferable}, to honor the representation class.
Note, if you do not specify a representation class when creating a {@code DataFlavor}, the default representation class is used. See appropriate documentation for {@code DataFlavor}'s constructors.
Also, {@code DataFlavor} instances with the "text" primaryMIME type may have a "charset" parameter. Refer to RFC 2046 and {@link #selectBestTextFlavor} for details on "text" MIME typesand the "charset" parameter.
Equality of {@code DataFlavors} is determined by the primary type,subtype, and representation class. Refer to {@link #equals(DataFlavor)} fordetails. When determining equality, any optional parameters are ignored. For example, the following produces two {@code DataFlavors} thatare considered identical:
```
 DataFlavor flavor1 = new DataFlavor(Object.class, "X-test/test; class=<java.lang.Object>; foo=bar"); DataFlavor flavor2 = new DataFlavor(Object.class, "X-test/test; class=<java.lang.Object>; x=y"); // The following returns true. flavor1.equals(flavor2); 
```
As mentioned, {@code flavor1} and {@code flavor2} are considered identical.As such, asking a {@code Transferable} for either {@code DataFlavor} returnsthe same results.
For more information on the using data transfer with Swing see the How to Use Drag and Drop and Data Transfer, section in Java Tutorial. @author Blake Sullivan @author Laurence P. G. Cable @author Jeff Dunn

            hashMap.putAll(map);
            flavorToFormatMap = Collections.unmodifiableMap(hashMap);
        }


        public int compare(Object obj1, Object obj2) {
            DataFlavor flavor1 = null;
            DataFlavor flavor2 = null;
            if (order == SELECT_BEST) {
                flavor1 = (DataFlavor)obj1;
                flavor2 = (DataFlavor)obj2;
            } else {
                flavor1 = (DataFlavor)obj2;
                flavor2 = (DataFlavor)obj1;
            }


            if (flavor1.equals(flavor2)) {
                return 0;
            }


            int comp = 0;


            String primaryType1 = flavor1.getPrimaryType();
            String subType1 = flavor1.getSubType();
            String mimeType1 = primaryType1 + "/" + subType1;
            Class class1 = flavor1.getRepresentationClass();


            String primaryType2 = flavor2.getPrimaryType();
            String subType2 = flavor2.getSubType();
            String mimeType2 = primaryType2 + "/" + subType2;
            Class class2 = flavor2.getRepresentationClass();


            if (flavor1.isFlavorTextType() && flavor2.isFlavorTextType()) {
                // First, compare MIME types
                comp = compareIndices(textTypes, mimeType1, mimeType2,
                                      UNKNOWN_OBJECT_LOSES);
                if (comp != 0) {
                    return comp;

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                Map flavorsForFormats = DataTransferer.getInstance().
                    getFlavorsForFormats(formats, SunClipboard.flavorMap);
                for (Iterator iter = flavorsForFormats.keySet().iterator();
                     iter.hasNext(); )
                {
                    DataFlavor flavor = (DataFlavor)iter.next();
                    Long lFormat = (Long)flavorsForFormats.get(flavor);


                    fetchOneFlavor(clipboard, flavor, lFormat, cached_data);
                }

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                    }
                }
                public List getFlavorsForNative(String nat) {
                    Map flavors =
                        getFlavorsForNatives(new String[] { nat } );
                    DataFlavor flavor = (DataFlavor)flavors.get(nat);
                    if (flavor != null) {
                        List list = new ArrayList(1);
                        list.add(flavor);
                        return list;
                    } else {

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        // 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 natives = map.getNativesForFlavor(flavor);


                currentIndex += natives.size();


                for (Iterator iter = natives.iterator(); iter.hasNext(); ) {
                    Long lFormat =
                        getFormatForNativeAsLong((String)iter.next());
                    Integer index = Integer.valueOf(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);
                    }
                }

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            long format = formats[i];
            String nat = getNativeForFormat(format);
            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())
                {
                    Long lFormat = Long.valueOf(format);
                    Object mapping =
                        DataTransferer.createMapping(lFormat, flavor);
                    flavorMap.put(flavor, lFormat);
                    mappingSet.add(mapping);
                    flavorSet.add(flavor);
                }
            }
        }


        // Second step: for each DataFlavor try to figure out which of the
        // specified formats is the best to translate to this flavor.
        // Then map each flavor to the best format.
        // For the given flavor, FlavorTable indicates which native will
        // best reflect data in the specified flavor to the underlying native
        // platform. We assume that this native is the best to translate
        // to this flavor.
        // Note: FlavorTable allows one-way mappings, so we can occasionally
        // map a flavor to the format for which the corresponding
        // format-to-flavor mapping doesn't exist. For this reason we have built
        // a mappingSet of all format-to-flavor mappings for the specified formats
        // and check if the format-to-flavor mapping exists for the
        // (flavor,format) pair being added.
        for (Iterator flavorIter = flavorSet.iterator();
             flavorIter.hasNext(); ) {
            DataFlavor flavor = (DataFlavor)flavorIter.next();


            List natives = map.getNativesForFlavor(flavor);


            for (Iterator nativeIter = natives.iterator();
                 nativeIter.hasNext(); ) {

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        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);
                }
            }
        }

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                    if (done) {
                        return;
                    }
                    byte[] data = null;
                    try {
                        DataFlavor flavor = (DataFlavor)formatMap.get(Long.valueOf(format));
                        if (flavor != null) {
                            data = translateTransferable(contents, flavor, format);
                        }
                    } catch (Exception e) {
                        e.printStackTrace();
                        data = null;
                    }
                    try {
                        getToolkitThreadBlockedHandler().lock();
                        stack.push(data);
                        getToolkitThreadBlockedHandler().exit();
                    } finally {
                        getToolkitThreadBlockedHandler().unlock();
                        done = true;
                    }
                }
            };


            final AppContext appContext = SunToolkit.targetToAppContext(source);


            getToolkitThreadBlockedHandler().lock();


            if (appContext != null) {
                appContext.put(DATA_CONVERTER_KEY, dataConverter);
            }


            SunToolkit.executeOnEventHandlerThread(source, dataConverter);


            while (stack.empty()) {
                getToolkitThreadBlockedHandler().enter();
            }


            if (appContext != null) {
                appContext.remove(DATA_CONVERTER_KEY);
            }


            ret = (byte[])stack.pop();
        } finally {
            getToolkitThreadBlockedHandler().unlock();
        } else {
            DataFlavor flavor = (DataFlavor)
                formatMap.get(Long.valueOf(format));
            if (flavor != null) {
                ret = translateTransferable(contents, flavor, format);
            }
        }

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Related Classes of ae.java.awt.datatransfer.DataFlavor

ae.sun.awt.datatransfer.ClipboardTransferable

ae.sun.awt.datatransfer.DataTransferer

ae.sun.awt.datatransfer.DataTransferer$DataFlavorComparator

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