PDFBackgroundTask (Big Faceless PDF Library 2.28.4)

All Known Implementing Classes:

BackgroundSignatureVerifier, BackgroundTextExtractor, ThumbnailPanel.ThumbnailSidePanel
```
public interface PDFBackgroundTask
```
This interface should be implemented by any features in the Viewer that run in a background thread. These features need to be paused when an exclusive lock on the whole PDF is required, such as when the PDF is saved. An example of one of these objects is the SidePanel returned from ThumbnailPanel

Since:

2.11.7

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`isPaused()`	Return true if the task has been paused with the `pause()` method
`boolean`	`isRunning()`	Returns true if the task is still running
`void`	`pause()`	Pause the task until the `unpause()` method is called.
`void`	`unpause()`	Unpause the task after a call to `pause()`

- Method Detail
  - isPaused
```
boolean isPaused()
```
    Return true if the task has been paused with the pause() method
  - pause
```
void pause()
    throws InterruptedException
```
    Pause the task until the unpause() method is called. This method waits until the task has actually paused.
    
    Throws:
    
    InterruptedException
  - unpause
```
void unpause()
```
    Unpause the task after a call to pause()
  - isRunning
```
boolean isRunning()
```
    Returns true if the task is still running