Class TextEvent
java.lang.Object
java.util.EventObject
java.awt.AWTEvent
java.awt.event.TextEvent
- All Implemented Interfaces:
Serializable
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:
-
Field Summary
Modifier and TypeFieldDescriptionstatic final int
The first number in the range of ids used for text events.static final int
The last number in the range of ids used for text events.static final int
This event id indicates that object's text changed.Fields inherited from 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 inherited from class java.util.EventObject
source
-
Constructor Summary
-
Method Summary
Modifier and TypeMethodDescriptionReturns a parameter string identifying this text event.Methods inherited from class java.util.EventObject
getSource
-
Field Details
-
TEXT_FIRST
public static final int TEXT_FIRSTThe first number in the range of ids used for text events.- See Also:
-
TEXT_LAST
public static final int TEXT_LASTThe last number in the range of ids used for text events.- See Also:
-
TEXT_VALUE_CHANGED
public static final int TEXT_VALUE_CHANGEDThis event id indicates that object's text changed.- See Also:
-
-
Constructor Details
-
TextEvent
Constructs aTextEvent
object.This method throws an
IllegalArgumentException
ifsource
isnull
.- Parameters:
source
- The (TextComponent
) object that originated the eventid
- An integer that identifies the event type. For information on allowable values, see the class description forTextEvent
- Throws:
IllegalArgumentException
- ifsource
is null- See Also:
-
-
Method Details
-
paramString
Returns a parameter string identifying this text event. This method is useful for event-logging and for debugging.- Overrides:
paramString
in classAWTEvent
- Returns:
- a string identifying the event and its attributes
-