BidiClassifier

Kotlin |Java

public class BidiClassifier
extends Object

java.lang.Object
↳	android.icu.text.BidiClassifier

Overrides default Bidi class values with custom ones.

The override mechanism requires to define a subclass of BidiClassifier which overrides the classifier method to assign customized Bidi classes.

This may be useful for assigning Bidi classes to PUA characters, or for special application needs. For instance, an application may want to handle all spaces like L or R characters (according to the base direction) when creating the visual ordering of logical lines which are part of a report organized in columns: there should not be interaction between adjacent cells.

To start using this customized classifier with a Bidi object, it must be specified by calling the Bidi.setCustomClassifier method; after that, the method classify of the custom BidiClassifier will be called by the UBA implementation any time the class of a character is to be determined.

See also:

Bidi.setCustomClassifier(BidiClassifier)

Summary

Public constructors
`BidiClassifier(Object context)`

Public methods
`int`	`classify(int c)` Gets customized Bidi class for the code point `c`.
`Object`	`getContext()` Returns the current classifier context.
`void`	`setContext(Object context)` Sets classifier context, which can be used either by a caller or callee for various purposes.

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

Public constructors

BidiClassifier

Added in API level 29

public BidiClassifier (Object context)

Parameters
`context`	`Object`: Context for this classifier instance. May be null.

Public methods

classify

Added in API level 29

public int classify (int c)

Gets customized Bidi class for the code point c.

Default implementation, to be overridden.

Parameters
`c`	`int`: Code point to be classified.

Returns
`int`	An integer representing directional property / Bidi class for the given code point `c`, or UCharacter.getIntPropertyMaxValue(UProperty.BIDI_CLASS)+1 to signify that there is no need to override the standard Bidi class for the given code point.

getContext

Added in API level 29

public Object getContext ()

Returns the current classifier context.

Returns
`Object`

setContext

Added in API level 29

public void setContext (Object context)

Sets classifier context, which can be used either by a caller or callee for various purposes.

Parameters
`context`	`Object`: Context for this classifier instance. May be null.