ComponentEvent

Class Overview

A low-level event which indicates that a component moved, changed size, or changed visibility (also, the root class for the other component-level events).

Component events are provided for notification purposes ONLY; The AWT will automatically handle component moves and resizes internally so that GUI layout works properly regardless of whether a program is receiving these events or not.

In addition to serving as the base class for other component-related events (InputEvent, FocusEvent, WindowEvent, ContainerEvent), this class defines the events that indicate changes in a component's size, position, or visibility.

This low-level event is generated by a component object (such as a List) when the component is moved, resized, rendered invisible, or made visible again. The event is passed to every ComponentListener or ComponentAdapter object which registered to receive such events using the component's addComponentListener method. (ComponentAdapter objects implement the ComponentListener interface.) Each such listener object gets this ComponentEvent when the event occurs.

Summary

[Expand] Inherited Constants

From class java.awt.AWTEvent long ACTION_EVENT_MASK The event mask for selecting action events. long ADJUSTMENT_EVENT_MASK The event mask for selecting adjustment events. long COMPONENT_EVENT_MASK The event mask for selecting component events. long CONTAINER_EVENT_MASK The event mask for selecting container events. long FOCUS_EVENT_MASK The event mask for selecting focus events. long HIERARCHY_BOUNDS_EVENT_MASK The event mask for selecting hierarchy bounds events. long HIERARCHY_EVENT_MASK The event mask for selecting hierarchy events. long INPUT_METHOD_EVENT_MASK The event mask for selecting input method events. long INVOCATION_EVENT_MASK The event mask for selecting invocation events. long ITEM_EVENT_MASK The event mask for selecting item events. long KEY_EVENT_MASK The event mask for selecting key events. long MOUSE_EVENT_MASK The event mask for selecting mouse events. long MOUSE_MOTION_EVENT_MASK The event mask for selecting mouse motion events. long MOUSE_WHEEL_EVENT_MASK The event mask for selecting mouse wheel events. long PAINT_EVENT_MASK The event mask for selecting paint events. int RESERVED_ID_MAX The maximum value for reserved AWT event IDs. long TEXT_EVENT_MASK The event mask for selecting text events. long WINDOW_EVENT_MASK The event mask for selecting window events. long WINDOW_FOCUS_EVENT_MASK The event mask for selecting window focus events. long WINDOW_STATE_EVENT_MASK The event mask for selecting window state events.

[Expand] Inherited Fields
From class java.awt.AWTEvent protected boolean consumed Controls whether or not the event is sent back down to the peer once the source has processed it - false means it's sent to the peer; true means it's not. protected int id The event's id.@serial
From class java.util.EventObject protected Object source The object on which the Event initially occurred.

[Expand] Inherited Methods
From class java.awt.AWTEvent void consume() Consumes this event, if this event can be consumed. int getID() Returns the event type. boolean isConsumed() Returns whether this event has been consumed. String paramString() Returns a string representing the state of this Event. void setSource(Object newSource) Retargets an event to a new source. String toString() Returns a String representation of this object.
From class java.util.EventObject Object getSource() The object on which the Event initially occurred. String toString() Returns a String representation of this EventObject.
From class java.lang.Object Object clone() Creates and returns a copy of this object. boolean equals(Object obj) Indicates whether some other object is "equal to" this one. void finalize() Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. final Class<?> getClass() Returns the runtime class of this Object. int hashCode() Returns a hash code value for the object. final void notify() Wakes up a single thread that is waiting on this object's monitor. final void notifyAll() Wakes up all threads that are waiting on this object's monitor. String toString() Returns a string representation of the object. final void wait() Causes the current thread to wait until another thread invokes the notify() method or the notifyAll() method for this object. final void wait(long timeout, int nanos) Causes the current thread to wait until another thread invokes the notify() method or the notifyAll() method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed. final void wait(long timeout) Causes the current thread to wait until either another thread invokes the notify() method or the notifyAll() method for this object, or a specified amount of time has elapsed.