Java(TM) 2 Platform, Standard Edition, v1.2.2 API Specification: Class InputEvent - JDK 5 Documentation v1.2.2, Java 2 SDK 英文文档

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Java^TM 2 Platform
Standard Edition

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java.awt.event
Class InputEvent

java.lang.Object
  |
  +--java.util.EventObject
        |
        +--java.awt.AWTEvent
              |
              +--java.awt.event.ComponentEvent
                    |
                    +--java.awt.event.InputEvent

Direct Known Subclasses:: KeyEvent, MouseEvent

public abstract class InputEvent
extends ComponentEvent

The root event class for all component-level input events. Input events are delivered to listeners before they are processed normally by the source where they originated. This allows listeners and component subclasses to "consume" the event so that the source will not process them in their default manner. For example, consuming mousePressed events on a Button component will prevent the Button from being activated.

See Also:: KeyEvent, KeyAdapter, MouseEvent, MouseAdapter, MouseMotionAdapter, Serialized Form

Field Summary

static int ALT_GRAPH_MASK
          The alt-graph key modifier constant.

static int ALT_MASK
          The alt key modifier constant.

static int BUTTON1_MASK
          The mouse button1 modifier constant.

static int BUTTON2_MASK
          The mouse button2 modifier constant.

static int BUTTON3_MASK
          The mouse button3 modifier constant.

static int CTRL_MASK
          The control key modifier constant.

static int META_MASK
          The meta key modifier constant.

static int SHIFT_MASK
          The shift key modifier constant.

Fields inherited from class java.awt.event.ComponentEvent

COMPONENT_FIRST, COMPONENT_HIDDEN, COMPONENT_LAST, COMPONENT_MOVED, COMPONENT_RESIZED, COMPONENT_SHOWN

Fields inherited from class java.awt.AWTEvent

ACTION_EVENT_MASK, ADJUSTMENT_EVENT_MASK, COMPONENT_EVENT_MASK, consumed, CONTAINER_EVENT_MASK, FOCUS_EVENT_MASK, id, INPUT_METHOD_EVENT_MASK, ITEM_EVENT_MASK, KEY_EVENT_MASK, MOUSE_EVENT_MASK, MOUSE_MOTION_EVENT_MASK, RESERVED_ID_MAX, TEXT_EVENT_MASK, WINDOW_EVENT_MASK

Fields inherited from class java.util.EventObject

source

Method Summary

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

int getModifiers()
          Returns the modifiers flag for this event.

long getWhen()
          Returns the timestamp of when this event occurred.

boolean isAltDown()
          Returns whether or not the Alt modifier is down on this event.

boolean isAltGraphDown()
          Returns whether or not the Alt-Graph modifier is down on this event.

boolean isConsumed()
          Returns whether or not this event has been consumed.

boolean isControlDown()
          Returns whether or not the Control modifier is down on this event.

boolean isMetaDown()
          Returns whether or not the Meta modifier is down on this event.

boolean isShiftDown()
          Returns whether or not the Shift modifier is down on this event.

Methods inherited from class java.awt.event.ComponentEvent

getComponent, paramString

Methods inherited from class java.awt.AWTEvent

finalize, getID, toString

Methods inherited from class java.util.EventObject

getSource

Methods inherited from class java.lang.Object

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

Field Detail

SHIFT_MASK

public static final int SHIFT_MASK

The shift key modifier constant.

CTRL_MASK

public static final int CTRL_MASK

The control key modifier constant.

META_MASK

public static final int META_MASK

The meta key modifier constant.

ALT_MASK

public static final int ALT_MASK

The alt key modifier constant.

ALT_GRAPH_MASK

public static final int ALT_GRAPH_MASK

The alt-graph key modifier constant.

BUTTON1_MASK

public static final int BUTTON1_MASK

The mouse button1 modifier constant.

BUTTON2_MASK

public static final int BUTTON2_MASK

The mouse button2 modifier constant.

BUTTON3_MASK

public static final int BUTTON3_MASK

The mouse button3 modifier constant.

Method Detail

isShiftDown

public boolean isShiftDown()

Returns whether or not the Shift modifier is down on this event.

isControlDown

public boolean isControlDown()

Returns whether or not the Control modifier is down on this event.

isMetaDown

public boolean isMetaDown()

Returns whether or not the Meta modifier is down on this event.

isAltDown

public boolean isAltDown()

Returns whether or not the Alt modifier is down on this event.

isAltGraphDown

public boolean isAltGraphDown()

Returns whether or not the Alt-Graph modifier is down on this event.

getWhen

public long getWhen()

Returns the timestamp of when this event occurred.

getModifiers

public int getModifiers()

Returns the modifiers flag for this event.

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()