AnnotationFileDropHandler (ICEpdf :: Viewer : Swing/AWT Viewer RI 7.3.1 API)

java.lang.Object
- org.icepdf.ri.common.views.annotations.AnnotationFileDropHandler

```
public final class AnnotationFileDropHandler
extends Object
```
AnnotationFileDropHandler provides a callback for processing files that are dragged on a PopupAnnotationComponent. The callback allows a users to register a FileDropHandler for each type of file they wish to support for drag and drop. When a file is dragged on the PopupAnnotationComponent it's file extension is compared against the registered FileDropHandler's and executed if a match is found.

The main use for this call back is converting file content to ASCII for insertion into the respective PopupAnnotationComponent's annotation object.

Since:

6.3.1

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addFileDropHandler(FileDropHandler fileDropHandler)`	Register a FileDropHandler implementation with the AnnotationFileDropHandler.
`static AnnotationFileDropHandler`	`getInstance()`	Gets an instance of the singleton AnnotationFileDropHandler object.
`void`	`handlePopupAnnotationFileDrop(File file, PopupAnnotationComponent popupAnnotationComponent)`	Takes the given file and checks for the FileDropHandler that can handle the extension.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - getInstance
```
public static AnnotationFileDropHandler getInstance()
```
    Gets an instance of the singleton AnnotationFileDropHandler object.
    
    Returns:
    
    singleton instance of the AnnotationFileDropHandler.
  - addFileDropHandler
```
public void addFileDropHandler(FileDropHandler fileDropHandler)
```
    Register a FileDropHandler implementation with the AnnotationFileDropHandler.
    
    Parameters:
    
    fileDropHandler - FileDropHandler to register.
  - handlePopupAnnotationFileDrop
```
public void handlePopupAnnotationFileDrop(File file,
                                          PopupAnnotationComponent popupAnnotationComponent)
```
    Takes the given file and checks for the FileDropHandler that can handle the extension. If a FileDropHandler match is found the FileDropHandler.execute() method is called to process the file and annotation.
    
    Parameters:
    
    file - file that was dragged on the the popup annotation component.
    
    popupAnnotationComponent - annotation component that should be processed by the FileDropHandler.