/* |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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/* |
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* This file is available under and governed by the GNU General Public |
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* License version 2 only, as published by the Free Software Foundation. |
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* However, the following notice accompanied the original version of this |
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* file and, per its terms, should not be removed: |
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* |
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* Copyright (c) 2000 World Wide Web Consortium, |
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* (Massachusetts Institute of Technology, Institut National de |
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* Recherche en Informatique et en Automatique, Keio University). All |
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* Rights Reserved. This program is distributed under the W3C's Software |
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* Intellectual Property License. This program is distributed in the |
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* hope that it will be useful, but WITHOUT ANY WARRANTY; without even |
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* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
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* PURPOSE. |
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* See W3C License http://www.w3.org/Consortium/Legal/ for more details. |
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*/ |
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package org.w3c.dom.events; |
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/** |
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* The <code>Event</code> interface is used to provide contextual information |
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* about an event to the handler processing the event. An object which |
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* implements the <code>Event</code> interface is generally passed as the |
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* first parameter to an event handler. More specific context information is |
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* passed to event handlers by deriving additional interfaces from |
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* <code>Event</code> which contain information directly relating to the |
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* type of event they accompany. These derived interfaces are also |
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* implemented by the object passed to the event listener. |
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* <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>. |
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* @since 1.5, DOM Level 2 |
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*/ |
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public interface Event { |
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// PhaseType |
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/** |
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* The current event phase is the capturing phase. |
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*/ |
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public static final short CAPTURING_PHASE = 1; |
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/** |
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* The event is currently being evaluated at the target |
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* <code>EventTarget</code>. |
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*/ |
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public static final short AT_TARGET = 2; |
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/** |
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* The current event phase is the bubbling phase. |
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*/ |
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public static final short BUBBLING_PHASE = 3; |
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/** |
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* The name of the event (case-insensitive). The name must be an XML name. |
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*/ |
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public String getType(); |
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/** |
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* Used to indicate the <code>EventTarget</code> to which the event was |
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* originally dispatched. |
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*/ |
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public EventTarget getTarget(); |
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/** |
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* Used to indicate the <code>EventTarget</code> whose |
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* <code>EventListeners</code> are currently being processed. This is |
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* particularly useful during capturing and bubbling. |
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*/ |
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public EventTarget getCurrentTarget(); |
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/** |
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* Used to indicate which phase of event flow is currently being |
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* evaluated. |
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*/ |
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public short getEventPhase(); |
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/** |
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* Used to indicate whether or not an event is a bubbling event. If the |
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* event can bubble the value is true, else the value is false. |
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*/ |
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public boolean getBubbles(); |
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/** |
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* Used to indicate whether or not an event can have its default action |
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* prevented. If the default action can be prevented the value is true, |
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* else the value is false. |
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*/ |
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public boolean getCancelable(); |
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/** |
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* Used to specify the time (in milliseconds relative to the epoch) at |
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* which the event was created. Due to the fact that some systems may |
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* not provide this information the value of <code>timeStamp</code> may |
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* be not available for all events. When not available, a value of 0 |
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* will be returned. Examples of epoch time are the time of the system |
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* start or 0:0:0 UTC 1st January 1970. |
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*/ |
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public long getTimeStamp(); |
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/** |
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* The <code>stopPropagation</code> method is used prevent further |
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* propagation of an event during event flow. If this method is called |
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* by any <code>EventListener</code> the event will cease propagating |
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* through the tree. The event will complete dispatch to all listeners |
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* on the current <code>EventTarget</code> before event flow stops. This |
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* method may be used during any stage of event flow. |
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*/ |
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public void stopPropagation(); |
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/** |
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* If an event is cancelable, the <code>preventDefault</code> method is |
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* used to signify that the event is to be canceled, meaning any default |
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* action normally taken by the implementation as a result of the event |
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* will not occur. If, during any stage of event flow, the |
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* <code>preventDefault</code> method is called the event is canceled. |
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* Any default action associated with the event will not occur. Calling |
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* this method for a non-cancelable event has no effect. Once |
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* <code>preventDefault</code> has been called it will remain in effect |
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* throughout the remainder of the event's propagation. This method may |
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* be used during any stage of event flow. |
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*/ |
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public void preventDefault(); |
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/** |
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* The <code>initEvent</code> method is used to initialize the value of an |
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* <code>Event</code> created through the <code>DocumentEvent</code> |
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* interface. This method may only be called before the |
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* <code>Event</code> has been dispatched via the |
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* <code>dispatchEvent</code> method, though it may be called multiple |
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* times during that phase if necessary. If called multiple times the |
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* final invocation takes precedence. If called from a subclass of |
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* <code>Event</code> interface only the values specified in the |
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* <code>initEvent</code> method are modified, all other attributes are |
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* left unchanged. |
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* @param eventTypeArg Specifies the event type. This type may be any |
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* event type currently defined in this specification or a new event |
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* type.. The string must be an XML name. Any new event type must not |
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* begin with any upper, lower, or mixed case version of the string |
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* "DOM". This prefix is reserved for future DOM event sets. It is |
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* also strongly recommended that third parties adding their own |
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* events use their own prefix to avoid confusion and lessen the |
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* probability of conflicts with other new events. |
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* @param canBubbleArg Specifies whether or not the event can bubble. |
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* @param cancelableArg Specifies whether or not the event's default |
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* action can be prevented. |
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*/ |
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public void initEvent(String eventTypeArg, |
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boolean canBubbleArg, |
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boolean cancelableArg); |
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} |