ThreadContext (PraxisCORE 5.4.0 API)

```
public interface ThreadContext
```
An optional context available from the Root lookup, providing the ability to query whether code is running on the Root thread, and to pass tasks to invoke on the Root thread.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`invokeLater(Runnable task)`	Execute a task on the Root thread.
`boolean`	`isInUpdate()`	Check whether the current thread is the active thread executing inside a Root update.
`boolean`	`isRootThread()`	Check whether the current thread is the thread currently driving a Root implementation.

- Method Detail
  - isInUpdate
```
boolean isInUpdate()
```
    Check whether the current thread is the active thread executing inside a Root update.
    
    Returns:
    
    current thread is in Root update
  - isRootThread
```
boolean isRootThread()
```
    Check whether the current thread is the thread currently driving a Root implementation. This is a looser check than isInUpdate() where a Root implementation may be driven by an external context - eg. UI event thread. It will always return true when isInUpdate() returns true. This method does not return true if a thread has been returned to a pool. As a guide, it will return true if blocking the current thread would block the Root from executing.
    
    Returns:
    
    current thread is Root executing thread
  - invokeLater
```
void invokeLater(Runnable task)
```
    Execute a task on the Root thread. The task should carefully check that its state is still valid - eg. a component should check that it has not been removed from the Root hierarchy.
    
    Parameters:
    
    task - task to be executed