Class InputMethodEvent

public class InputMethodEvent
extends AWTEvent

Input method events contain information about text that is being composed using an input method. Whenever the text changes, the input method sends an event. If the text component that's currently using the input method is an active client, the event is dispatched to that component. Otherwise, it is dispatched to a separate composition window.

The text included with the input method event consists of two parts: committed text and composed text. Either part may be empty. The two parts together replace any uncommitted composed text sent in previous events, or the currently selected committed text. Committed text should be integrated into the text component's persistent data, it will not be sent again. Composed text may be sent repeatedly, with changes to reflect the user's editing operations. Committed text always precedes composed text.

Fields

INPUT_METHOD_FIRST

@Native
public static final int INPUT_METHOD_FIRST

Marks the first integer id for the range of input method event ids.

See Also:

Constant Field Values

INPUT_METHOD_TEXT_CHANGED

@Native
public static final int INPUT_METHOD_TEXT_CHANGED

The event type indicating changed input method text. This event is generated by input methods while processing input.

See Also:

Constant Field Values

CARET_POSITION_CHANGED

@Native
public static final int CARET_POSITION_CHANGED

The event type indicating a changed insertion point in input method text. This event is generated by input methods while processing input if only the caret changed.

See Also:

Constant Field Values

INPUT_METHOD_LAST

@Native
public static final int INPUT_METHOD_LAST

Marks the last integer id for the range of input method event ids.

See Also:

Constant Field Values

Constructors

InputMethodEvent

public InputMethodEvent(Component source,
                        int id,
                        long when,
                        AttributedCharacterIterator text,
                        int committedCharacterCount,
                        TextHitInfo caret,
                        TextHitInfo visiblePosition)

Parameters:

source - the object where the event originated

id - the event type

when - a long integer that specifies the time the event occurred

text - the combined committed and composed text, committed text first; must be null when the event type is CARET_POSITION_CHANGED; may be null for INPUT_METHOD_TEXT_CHANGED if there's no committed or composed text

committedCharacterCount - the number of committed characters in the text

caret - the caret (a.k.a. insertion point); null if there's no caret within current composed text

visiblePosition - the position that's most important to be visible; null if there's no recommendation for a visible position within current composed text

Throws:

IllegalArgumentException - if id is not in the range INPUT_METHOD_FIRST..INPUT_METHOD_LAST; or if id is CARET_POSITION_CHANGED and text is not null; or if committedCharacterCount is not in the range 0..(text.getEndIndex() - text.getBeginIndex())

IllegalArgumentException - if source is null

Since:

1.4

InputMethodEvent

public InputMethodEvent(Component source,
                        int id,
                        AttributedCharacterIterator text,
                        int committedCharacterCount,
                        TextHitInfo caret,
                        TextHitInfo visiblePosition)

Parameters:

source - the object where the event originated

id - the event type

text - the combined committed and composed text, committed text first; must be null when the event type is CARET_POSITION_CHANGED; may be null for INPUT_METHOD_TEXT_CHANGED if there's no committed or composed text

committedCharacterCount - the number of committed characters in the text

caret - the caret (a.k.a. insertion point); null if there's no caret within current composed text

visiblePosition - the position that's most important to be visible; null if there's no recommendation for a visible position within current composed text

Throws:

IllegalArgumentException - if id is not in the range INPUT_METHOD_FIRST..INPUT_METHOD_LAST; or if id is CARET_POSITION_CHANGED and text is not null; or if committedCharacterCount is not in the range 0..(text.getEndIndex() - text.getBeginIndex())

IllegalArgumentException - if source is null

InputMethodEvent

public InputMethodEvent(Component source,
                        int id,
                        TextHitInfo caret,
                        TextHitInfo visiblePosition)

Parameters:

source - the object where the event originated

id - the event type

caret - the caret (a.k.a. insertion point); null if there's no caret within current composed text

visiblePosition - the position that's most important to be visible; null if there's no recommendation for a visible position within current composed text

Throws:

IllegalArgumentException - if id is not in the range INPUT_METHOD_FIRST..INPUT_METHOD_LAST

IllegalArgumentException - if source is null

Methods

getText

public AttributedCharacterIterator getText()

Gets the combined committed and composed text. Characters from index 0 to index getCommittedCharacterCount() - 1 are committed text, the remaining characters are composed text.

Returns:

the text. Always null for CARET_POSITION_CHANGED; may be null for INPUT_METHOD_TEXT_CHANGED if there's no composed or committed text.

getCommittedCharacterCount

public int getCommittedCharacterCount()

Gets the number of committed characters in the text.

getCaret

public TextHitInfo getCaret()

Returns:

the caret (a.k.a. insertion point). Null if there's no caret within current composed text.

getVisiblePosition

public TextHitInfo getVisiblePosition()

Returns:

the position that's most important to be visible. Null if there's no recommendation for a visible position within current composed text.

consume

public void consume()

Consumes this event so that it will not be processed in the default manner by the source which originated it.

Overrides:

consume in class AWTEvent

isConsumed

public boolean isConsumed()

Returns whether or not this event has been consumed.

Overrides:

isConsumed in class AWTEvent

See Also:

consume()

getWhen

public long getWhen()

Returns the time stamp of when this event occurred.

Returns:

this event's timestamp

Since:

1.4

paramString

public String paramString()

Returns a parameter string identifying this event. This method is useful for event-logging and for debugging. It contains the event ID in text form, the characters of the committed and composed text separated by "+", the number of committed characters, the caret, and the visible position.

Overrides:

paramString in class AWTEvent

Returns:

a string identifying the event and its attributes