jdk.awt.event.ContainerEvent
A low-level event which indicates that a container's contents changed because a component was added or removed.
Container events are provided for notification purposes ONLY; The AWT will automatically handle changes to the containers contents internally so that the program works properly regardless of whether the program is receiving these events or not.
This low-level event is generated by a container object (such as a Panel) when a component is added to it or removed from it. The event is passed to every ContainerListener or ContainerAdapter object which registered to receive such events using the component's addContainerListener method. (ContainerAdapter objects implement the ContainerListener interface.) Each such listener object gets this ContainerEvent when the event occurs.
An unspecified behavior will be caused if the id parameter of any particular ContainerEvent instance is not in the range from CONTAINER_FIRST to CONTAINER_LAST.
A low-level event which indicates that a container's contents changed because a component was added or removed. Container events are provided for notification purposes ONLY; The AWT will automatically handle changes to the containers contents internally so that the program works properly regardless of whether the program is receiving these events or not. This low-level event is generated by a container object (such as a Panel) when a component is added to it or removed from it. The event is passed to every ContainerListener or ContainerAdapter object which registered to receive such events using the component's addContainerListener method. (ContainerAdapter objects implement the ContainerListener interface.) Each such listener object gets this ContainerEvent when the event occurs. An unspecified behavior will be caused if the id parameter of any particular ContainerEvent instance is not in the range from CONTAINER_FIRST to CONTAINER_LAST.
*-component-addedclj
Static Constant.
This event indicates that a component was added to the container.
type: int
Static Constant. This event indicates that a component was added to the container. type: int
*-component-removedclj
Static Constant.
This event indicates that a component was removed from the container.
type: int
Static Constant. This event indicates that a component was removed from the container. type: int
*-container-firstclj
Static Constant.
The first number in the range of ids used for container events.
type: int
Static Constant. The first number in the range of ids used for container events. type: int
*-container-lastclj
Static Constant.
The last number in the range of ids used for container events.
type: int
Static Constant. The last number in the range of ids used for container events. type: int
->container-eventclj
(->container-event source id child)Constructor.
Constructs a ContainerEvent object. This method throws an IllegalArgumentException if source is null.
source - The Component object (container) that originated the event - java.awt.Component
id - An integer indicating the type of event. For information on allowable values, see the class description for ContainerEvent - int
child - the component that was added or removed - java.awt.Component
throws: java.lang.IllegalArgumentException - if source is null
Constructor. Constructs a ContainerEvent object. This method throws an IllegalArgumentException if source is null. source - The Component object (container) that originated the event - `java.awt.Component` id - An integer indicating the type of event. For information on allowable values, see the class description for ContainerEvent - `int` child - the component that was added or removed - `java.awt.Component` throws: java.lang.IllegalArgumentException - if source is null
get-childclj
(get-child this)Returns the component that was affected by the event.
returns: the Component object that was added or removed - java.awt.Component
Returns the component that was affected by the event. returns: the Component object that was added or removed - `java.awt.Component`
get-containerclj
(get-container this)Returns the originator of the event.
returns: the Container object that originated
the event, or null if the object is not a
Container. - java.awt.Container
Returns the originator of the event. returns: the Container object that originated the event, or null if the object is not a Container. - `java.awt.Container`
param-stringclj
(param-string this)Returns a parameter string identifying this event. This method is useful for event-logging and for debugging.
returns: a string identifying the event and its attributes - java.lang.String
Returns a parameter string identifying this event. This method is useful for event-logging and for debugging. returns: a string identifying the event and its attributes - `java.lang.String`
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