You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
132 lines
5.5 KiB
132 lines
5.5 KiB
/*
|
|
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*/
|
|
|
|
/*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
* Copyright (c) 2000 World Wide Web Consortium,
|
|
* (Massachusetts Institute of Technology, Institut National de
|
|
* Recherche en Informatique et en Automatique, Keio University). All
|
|
* Rights Reserved. This program is distributed under the W3C's Software
|
|
* Intellectual Property License. This program is distributed in the
|
|
* hope that it will be useful, but WITHOUT ANY WARRANTY; without even
|
|
* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
* PURPOSE.
|
|
* See W3C License http://www.w3.org/Consortium/Legal/ for more details.
|
|
*/
|
|
|
|
package org.w3c.dom.events;
|
|
|
|
/**
|
|
* The <code>EventTarget</code> interface is implemented by all
|
|
* <code>Nodes</code> in an implementation which supports the DOM Event
|
|
* Model. Therefore, this interface can be obtained by using
|
|
* binding-specific casting methods on an instance of the <code>Node</code>
|
|
* interface. The interface allows registration and removal of
|
|
* <code>EventListeners</code> on an <code>EventTarget</code> and dispatch
|
|
* of events to that <code>EventTarget</code>.
|
|
* <p>See also the <a href='http://www.w3.org/TR/2000/REC-DOM-Level-2-Events-20001113'>Document Object Model (DOM) Level 2 Events Specification</a>.
|
|
* @since DOM Level 2
|
|
*/
|
|
public interface EventTarget {
|
|
/**
|
|
* This method allows the registration of event listeners on the event
|
|
* target. If an <code>EventListener</code> is added to an
|
|
* <code>EventTarget</code> while it is processing an event, it will not
|
|
* be triggered by the current actions but may be triggered during a
|
|
* later stage of event flow, such as the bubbling phase.
|
|
* <br> If multiple identical <code>EventListener</code>s are registered
|
|
* on the same <code>EventTarget</code> with the same parameters the
|
|
* duplicate instances are discarded. They do not cause the
|
|
* <code>EventListener</code> to be called twice and since they are
|
|
* discarded they do not need to be removed with the
|
|
* <code>removeEventListener</code> method.
|
|
* @param type The event type for which the user is registering
|
|
* @param listener The <code>listener</code> parameter takes an interface
|
|
* implemented by the user which contains the methods to be called
|
|
* when the event occurs.
|
|
* @param useCapture If true, <code>useCapture</code> indicates that the
|
|
* user wishes to initiate capture. After initiating capture, all
|
|
* events of the specified type will be dispatched to the registered
|
|
* <code>EventListener</code> before being dispatched to any
|
|
* <code>EventTargets</code> beneath them in the tree. Events which
|
|
* are bubbling upward through the tree will not trigger an
|
|
* <code>EventListener</code> designated to use capture.
|
|
*/
|
|
public void addEventListener(String type,
|
|
EventListener listener,
|
|
boolean useCapture);
|
|
|
|
/**
|
|
* This method allows the removal of event listeners from the event
|
|
* target. If an <code>EventListener</code> is removed from an
|
|
* <code>EventTarget</code> while it is processing an event, it will not
|
|
* be triggered by the current actions. <code>EventListener</code>s can
|
|
* never be invoked after being removed.
|
|
* <br>Calling <code>removeEventListener</code> with arguments which do
|
|
* not identify any currently registered <code>EventListener</code> on
|
|
* the <code>EventTarget</code> has no effect.
|
|
* @param type Specifies the event type of the <code>EventListener</code>
|
|
* being removed.
|
|
* @param listener The <code>EventListener</code> parameter indicates the
|
|
* <code>EventListener </code> to be removed.
|
|
* @param useCapture Specifies whether the <code>EventListener</code>
|
|
* being removed was registered as a capturing listener or not. If a
|
|
* listener was registered twice, one with capture and one without,
|
|
* each must be removed separately. Removal of a capturing listener
|
|
* does not affect a non-capturing version of the same listener, and
|
|
* vice versa.
|
|
*/
|
|
public void removeEventListener(String type,
|
|
EventListener listener,
|
|
boolean useCapture);
|
|
|
|
/**
|
|
* This method allows the dispatch of events into the implementations
|
|
* event model. Events dispatched in this manner will have the same
|
|
* capturing and bubbling behavior as events dispatched directly by the
|
|
* implementation. The target of the event is the
|
|
* <code> EventTarget</code> on which <code>dispatchEvent</code> is
|
|
* called.
|
|
* @param evt Specifies the event type, behavior, and contextual
|
|
* information to be used in processing the event.
|
|
* @return The return value of <code>dispatchEvent</code> indicates
|
|
* whether any of the listeners which handled the event called
|
|
* <code>preventDefault</code>. If <code>preventDefault</code> was
|
|
* called the value is false, else the value is true.
|
|
* @exception EventException
|
|
* UNSPECIFIED_EVENT_TYPE_ERR: Raised if the <code>Event</code>'s type
|
|
* was not specified by initializing the event before
|
|
* <code>dispatchEvent</code> was called. Specification of the
|
|
* <code>Event</code>'s type as <code>null</code> or an empty string
|
|
* will also trigger this exception.
|
|
*/
|
|
public boolean dispatchEvent(Event evt)
|
|
throws EventException;
|
|
|
|
}
|