Class TextEvent

java.lang.Object

java.util.EventObject

java.awt.AWTEvent

java.awt.event.TextEvent

All Implemented Interfaces:

Serializable

public class TextEvent
extends AWTEvent

A semantic event which indicates that an object's text changed. This high-level event is generated by an object (such as a TextComponent) when its text changes. The event is passed to every TextListener object which registered to receive such events using the component's addTextListener method.

The object that implements the TextListener interface gets this TextEvent when the event occurs. The listener is spared the details of processing individual mouse movements and key strokes Instead, it can process a "meaningful" (semantic) event like "text changed".

An unspecified behavior will be caused if the id parameter of any particular TextEvent instance is not in the range from TEXT_FIRST to TEXT_LAST.

Since:

1.1

See Also:

• TextComponent
• TextListener
• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final int	TEXT_FIRST	The first number in the range of ids used for text events.
static final int	TEXT_LAST	The last number in the range of ids used for text events.
static final int	TEXT_VALUE_CHANGED	This event id indicates that object's text changed.

Fields declared in class java.awt.AWTEvent

ACTION_EVENT_MASK, ADJUSTMENT_EVENT_MASK, COMPONENT_EVENT_MASK, consumed, CONTAINER_EVENT_MASK, FOCUS_EVENT_MASK, HIERARCHY_BOUNDS_EVENT_MASK, HIERARCHY_EVENT_MASK, id, INPUT_METHOD_EVENT_MASK, INVOCATION_EVENT_MASK, ITEM_EVENT_MASK, KEY_EVENT_MASK, MOUSE_EVENT_MASK, MOUSE_MOTION_EVENT_MASK, MOUSE_WHEEL_EVENT_MASK, PAINT_EVENT_MASK, RESERVED_ID_MAX, TEXT_EVENT_MASK, WINDOW_EVENT_MASK, WINDOW_FOCUS_EVENT_MASK, WINDOW_STATE_EVENT_MASK

Fields declared in class java.util.EventObject

source

Constructor Summary

Constructors

Constructor	Description
TextEvent(Object source, int id)	Constructs a TextEvent object.

Method Summary

Modifier and Type	Method	Description
String	paramString()	Returns a parameter string identifying this text event.

Methods declared in class java.awt.AWTEvent

consume, getID, isConsumed, setSource, toString

Methods declared in class java.util.EventObject

getSource

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

TEXT_FIRST

public static final int TEXT_FIRST

The first number in the range of ids used for text events.

See Also:

• Constant Field Values

TEXT_LAST

public static final int TEXT_LAST

The last number in the range of ids used for text events.

See Also:

• Constant Field Values

TEXT_VALUE_CHANGED

public static final int TEXT_VALUE_CHANGED

This event id indicates that object's text changed.

See Also:

• Constant Field Values

Constructor Details

TextEvent

public TextEvent(Object source,
 int id)

Constructs a TextEvent object.

This method throws an IllegalArgumentException if source is null.

Parameters:

source - The (TextComponent) object that originated the event

id - An integer that identifies the event type. For information on allowable values, see the class description for TextEvent

Throws:

IllegalArgumentException - if source is null

See Also:

• EventObject.getSource()
• AWTEvent.getID()

Method Details

paramString

public String paramString()

Returns a parameter string identifying this text event. This method is useful for event-logging and for debugging.

Overrides:

paramString in class AWTEvent

Returns:

a string identifying the event and its attributes