modules/javafx.web/src/main/java/com/sun/javafx/webkit/UIClientImpl.java

*** 310,320 ****
      private final static DataFormat DF_DRAG_IMAGE_OFFSET = getDataFormat(DRAG_IMAGE_OFFSET);
  
      @Override public void startDrag(WCImage image,
          int imageOffsetX, int imageOffsetY,
          int eventPosX, int eventPosY,
!         String[] mimeTypes, Object[] values, boolean isImageSource
      ){
          content = new ClipboardContent();
          for (int i = 0; i < mimeTypes.length; ++i) if (values[i] != null) {
              try {
                  content.put(getDataFormat(mimeTypes[i]),
--- 310,321 ----
      private final static DataFormat DF_DRAG_IMAGE_OFFSET = getDataFormat(DRAG_IMAGE_OFFSET);
  
      @Override public void startDrag(WCImage image,
          int imageOffsetX, int imageOffsetY,
          int eventPosX, int eventPosY,
!         String[] mimeTypes, Object[] values,
!         boolean isImageSource, String imageFileExt
      ){
          content = new ClipboardContent();
          for (int i = 0; i < mimeTypes.length; ++i) if (values[i] != null) {
              try {
                  content.put(getDataFormat(mimeTypes[i]),
*** 349,367 ****
              if (isImageSource) {
                  Object platformImage = image.getWidth() > 0 && image.getHeight() > 0 ?
                          image.getPlatformImage() : null;
                  if (platformImage != null) {
                      try {
!                         File temp = File.createTempFile("jfx", ".png");
                          temp.deleteOnExit();
                          ImageIO.write(
                              toBufferedImage(Toolkit.getImageAccessor().fromPlatformImage(
                                  Toolkit.getToolkit().loadPlatformImage(
                                      platformImage
                                  )
                              )),
!                             "png",
                              temp);
                          content.put(DataFormat.FILES, Arrays.asList(temp));
                      } catch (IOException | SecurityException e) {
                          //That is ok. It was just an attempt.
                          //e.printStackTrace();
--- 350,368 ----
              if (isImageSource) {
                  Object platformImage = image.getWidth() > 0 && image.getHeight() > 0 ?
                          image.getPlatformImage() : null;
                  if (platformImage != null) {
                      try {
!                         File temp = File.createTempFile("jfx", "." + imageFileExt);
                          temp.deleteOnExit();
                          ImageIO.write(
                              toBufferedImage(Toolkit.getImageAccessor().fromPlatformImage(
                                  Toolkit.getToolkit().loadPlatformImage(
                                      platformImage
                                  )
                              )),
!                             imageFileExt,
                              temp);
                          content.put(DataFormat.FILES, Arrays.asList(temp));
                      } catch (IOException | SecurityException e) {
                          //That is ok. It was just an attempt.
                          //e.printStackTrace();