org.w3c.dom.events.Event Maven / Gradle / Ivy
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*
* 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 the GNU
* General Public License version 2 for more details (a copy is
* included at /legal/license.txt).
*
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* 02110-1301 USA
*
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/*
* Copyright (c) 2006 World Wide Web Consortium,
*
* (Massachusetts Institute of Technology, European Research Consortium for
* Informatics and Mathematics, Keio University). All Rights Reserved. This
* work is distributed under the W3C(r) Software License [1] 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.
*
* [1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231
*/
package org.w3c.dom.events;
/**
* The Event interface is used to provide contextual information
* about an event to the handler processing the event. An object which
* implements the Event interface is generally passed as the
* first parameter to an event handler. More specific context information is
* passed to event handlers by deriving additional interfaces from
* Event which contain information directly relating to the
* type of event they accompany. These derived interfaces are also
* implemented by the object passed to the event listener.
* See also the
*
* Document Object Model (DOM) Level 2 Events Specification.
* @since DOM Level 2
*/
public interface Event {
// PhaseType
/**
* The current event phase is the capturing phase.
*/
public static final short CAPTURING_PHASE = 1;
/**
* The event is currently being evaluated at the target
* EventTarget.
*/
public static final short AT_TARGET = 2;
/**
* The current event phase is the bubbling phase.
*/
public static final short BUBBLING_PHASE = 3;
/**
* The name of the event (case-sensitive). The name must be an XML name.
*/
public String getType();
/**
* Used to indicate the EventTarget to which the event was
* originally dispatched.
*/
public EventTarget getTarget();
/**
* Used to indicate the EventTarget whose
* EventListeners are currently being processed. This is
* particularly useful during capturing and bubbling.
*/
public EventTarget getCurrentTarget();
/**
* The namespace URI associated with this event at creation time, or
* null if it is unspecified.
*
For events initialized with a DOM Level 2 Events method
* this is always null.
* @since DOM Level 3
*/
public String getNamespaceURI();
/**
* Used to indicate which phase of event flow is currently being
* evaluated.
*/
public short getEventPhase();
/**
* Used to indicate whether or not an event is a bubbling event. If the
* event can bubble the value is true, else the value is false.
*/
public boolean getBubbles();
/**
* Used to indicate whether or not an event can have its default action
* prevented. If the default action can be prevented the value is true,
* else the value is false.
*/
public boolean getCancelable();
/**
* Used to indicate whether Event.preventDefault() has been
* called for this event.
*
Note: Calling Event.preventDefault()
* for a non-cancelable event has no effect.
* @since DOM Level 3
*/
public boolean getDefaultPrevented();
/**
* Used to specify the time (in milliseconds relative to the epoch) at
* which the event was created. Due to the fact that some systems may
* not provide this information the value of timeStamp may
* be not available for all events. When not available, a value of 0
* will be returned. Examples of epoch time are the time of the system
* start or 0:0:0 UTC 1st January 1970.
*/
public long getTimeStamp();
/**
* The stopPropagation method is used prevent further
* propagation of an event during event flow. If this method is called
* by any EventListener the event will cease propagating
* through the tree. The event will complete dispatch to all listeners
* on the current EventTarget before event flow stops. This
* method may be used during any stage of event flow.
*/
public void stopPropagation();
/**
* If an event is cancelable, the preventDefault method is
* used to signify that the event is to be canceled, meaning any default
* action normally taken by the implementation as a result of the event
* will not occur. If, during any stage of event flow, the
* preventDefault method is called the event is canceled.
* Any default action associated with the event will not occur. Calling
* this method for a non-cancelable event has no effect. Once
* preventDefault has been called it will remain in effect
* throughout the remainder of the event's propagation. This method may
* be used during any stage of event flow.
*/
public void preventDefault();
/**
* The initEvent method is used to initialize the value of an
* Event created through the DocumentEvent
* interface. This method may only be called before the
* Event has been dispatched via the
* dispatchEvent method, though it may be called multiple
* times during that phase if necessary. If called multiple times the
* final invocation takes precedence. If called from a subclass of
* Event interface only the values specified in the
* initEvent method are modified, all other attributes are
* left unchanged.
* @param eventTypeArg Specifies the event type. This type may be any
* event type currently defined in this specification or a new event
* type.. The string must be an XML name. Any new event type must not
* begin with any upper, lower, or mixed case version of the string
* "DOM". This prefix is reserved for future DOM event sets. It is
* also strongly recommended that third parties adding their own
* events use their own prefix to avoid confusion and lessen the
* probability of conflicts with other new events.
* @param canBubbleArg Specifies whether or not the event can bubble.
* @param cancelableArg Specifies whether or not the event's default
* action can be prevented.
*/
public void initEvent(String eventTypeArg,
boolean canBubbleArg,
boolean cancelableArg);
/**
* The initEventNS method is used to initialize the value of
* an Event object and has the same behavior as
* Event.initEvent().
* @param namespaceURIArg Specifies Event.namespaceURI, the
* namespace URI associated with this event, or null if
* no namespace.
* @param eventTypeArg Refer to the Event.initEvent()
* method for a description of this parameter.
* @param canBubbleArg Refer to the Event.initEvent()
* method for a description of this parameter.
* @param cancelableArg Refer to the Event.initEvent()
* method for a description of this parameter.
*
* @since DOM Level 3
*/
public void initEventNS(String namespaceURIArg,
String eventTypeArg,
boolean canBubbleArg,
boolean cancelableArg);
}