ISignatureController (zk 10.0.0 API)

java.lang.Object
- org.zkoss.stateless.state.ISignatureController

```
public class ISignatureController
extends java.lang.Object
```
An ISignature controller to control undo, clear, save, and some status with the given signature instance.
Note: this class is not thread-safe, so when it's used in multi-threading environment, the developer should handle the threading issue.

Author:

katherine

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`ISignature`	`build()`	Returns the immutable signature instance that the controller to build with.
`void`	`clear()`	Clears the signature.
`static ISignatureController`	`of(ISignature owner)`	Returns the controller instance with the given `signature`
`void`	`save()`	Saves the Signature.
`void`	`undo()`	Undoes the signature.

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

- Method Detail
  - undo
```
public void undo()
```
    Undoes the signature.
  - clear
```
public void clear()
```
    Clears the signature.
  - save
```
public void save()
```
    Saves the Signature. It will upload a file and fire an onSave event to server, upload file type is according to ISignature.getSaveType().
  - of
```
public static ISignatureController of(ISignature owner)
```
    Returns the controller instance with the given signature
    
    Parameters:
    
    owner - The controller to control with
  - build
```
public ISignature build()
```
    Returns the immutable signature instance that the controller to build with.