SequenceSupport

java.lang.Object
- com.twelvemonkeys.imageio.util.SequenceSupport

```
public final class SequenceSupport
extends java.lang.Object
```
A tiny utility class that keeps state for sequences. For use by ImageWriter implementations that supports sequence (multiple images in same stream).

See Also:

ImageWriter.canWriteSequence()

Field Summary

Fields
Modifier and Type Field Description

private int index

Constructor Summary

Constructors
Constructor Description

SequenceSupport()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`advance()`	Advances the current sequence.
`int`	`current()`	Gets the current sequence index.
`int`	`end()`	Ends the current sequence.
`void`	`reset()`	Resets the sequence to initial state, regardless of the current sequence state.
`void`	`start()`	Starts a new sequence.

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

- Field Detail
  - index
```
private int index
```
- Constructor Detail
  - SequenceSupport
```
public SequenceSupport()
```
- Method Detail
  - reset
```
public void reset()
```
    Resets the sequence to initial state, regardless of the current sequence state.
  - start
```
public void start()
```
    Starts a new sequence.
    
    Throws:
    
    java.lang.IllegalStateException - if a sequence is already running.
    
    See Also:
    
    ImageWriter.prepareWriteSequence(IIOMetadata)
  - advance
```
public int advance()
```
    Advances the current sequence.
    
    Returns:
    
    the current sequence index.
    
    Throws:
    
    java.lang.IllegalStateException - if a sequence is not running.
    
    See Also:
    
    ImageWriter.writeToSequence(IIOImage, ImageWriteParam)
  - current
```
public int current()
```
    Gets the current sequence index.
    
    Returns:
    
    the current sequence index, or -1 if a sequence is not running.
  - end
```
public int end()
```
    Ends the current sequence. The sequence is reset to initial state, and a new sequence may be started.
    
    Returns:
    
    the current (last) sequence index
    
    Throws:
    
    java.lang.IllegalStateException - if a sequence is not running.
    
    See Also:
    
    ImageWriter.endWriteSequence()