Enum FocusEvent.Cause

All Implemented Interfaces:
Serializable, Comparable<FocusEvent.Cause>
Enclosing class:
FocusEvent
public static enum FocusEvent.Cause
extends Enum<FocusEvent.Cause>

This enum represents the cause of a FocusEvent- the reason why it occurred. Possible reasons include mouse events, keyboard focus traversal, window activation. If no cause is provided then the reason is UNKNOWN.

Since:
9

Enum Constants

Enum Constant Description
ACTIVATION

An activation of a toplevel window.
CLEAR_GLOBAL_FOCUS_OWNER

Clearing global focus owner.
MOUSE_EVENT

An activating mouse event.
ROLLBACK

Restoring focus after a focus request has been rejected.
TRAVERSAL

A focus traversal action with unspecified direction.
TRAVERSAL_BACKWARD

A backward focus traversal action.
TRAVERSAL_DOWN

A down-cycle focus traversal action.
TRAVERSAL_FORWARD

A forward focus traversal action.
TRAVERSAL_UP

An up-cycle focus traversal action.
UNEXPECTED

A system action causing an unexpected focus change.
UNKNOWN

The default value.

Methods

Modifier and Type Method Description
static FocusEvent.Cause valueOf​(String name)

Returns the enum constant of this type with the specified name.
static FocusEvent.Cause[] values()

Returns an array containing the constants of this enum type, in the order they are declared.

Methods declared in class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods declared in class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constants

UNKNOWN

public static final FocusEvent.Cause UNKNOWN

The default value.

MOUSE_EVENT

public static final FocusEvent.Cause MOUSE_EVENT

An activating mouse event.

TRAVERSAL

public static final FocusEvent.Cause TRAVERSAL

A focus traversal action with unspecified direction.

TRAVERSAL_UP

public static final FocusEvent.Cause TRAVERSAL_UP

An up-cycle focus traversal action.

TRAVERSAL_DOWN

public static final FocusEvent.Cause TRAVERSAL_DOWN

A down-cycle focus traversal action.

TRAVERSAL_FORWARD

public static final FocusEvent.Cause TRAVERSAL_FORWARD

A forward focus traversal action.

TRAVERSAL_BACKWARD

public static final FocusEvent.Cause TRAVERSAL_BACKWARD

A backward focus traversal action.

ROLLBACK

public static final FocusEvent.Cause ROLLBACK

Restoring focus after a focus request has been rejected.

UNEXPECTED

public static final FocusEvent.Cause UNEXPECTED

A system action causing an unexpected focus change.

ACTIVATION

public static final FocusEvent.Cause ACTIVATION

An activation of a toplevel window.

CLEAR_GLOBAL_FOCUS_OWNER

public static final FocusEvent.Cause CLEAR_GLOBAL_FOCUS_OWNER

Clearing global focus owner.

Methods

values

public static FocusEvent.Cause[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows: 

for (FocusEvent.Cause c : FocusEvent.Cause.values())
    System.out.println(c);

Returns:
an array containing the constants of this enum type, in the order they are declared

valueOf

public static FocusEvent.Cause valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:
name - the name of the enum constant to be returned.
Returns:
the enum constant with the specified name
Throws:
IllegalArgumentException - if this enum type has no constant with the specified name
NullPointerException - if the argument is null

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Documentation extracted from Debian's OpenJDK Development Kit package.
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https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/java/awt/event/FocusEvent.Cause.html