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nsISupports
Last changed in Gecko 16.0 (Firefox 16.0 / Thunderbird 16.0 / SeaMonkey 2.13)nsIPrivateDOMEvent interface was merged into this interface. Everything marked as Gecko 16.0 was previously available in that interface. See bug 761613.Method overview
boolean Deserialize(in ConstIPCMessagePtr aMsg, out voidPtr aIter); Violates the XPCOM interface guidelines |
void duplicatePrivateData(); Native code only! |
nsEventPtr GetInternalNSEvent(); Violates the XPCOM interface guidelines |
boolean getPreventDefault(); Deprecated since Gecko 16.0 |
void initEvent(in DOMString eventTypeArg, in boolean canBubbleArg, in boolean cancelableArg); |
boolean IsDispatchStopped(); Violates the XPCOM interface guidelines |
void preventBubble(); Obsolete since Gecko 24 |
void preventCapture(); Obsolete since Gecko 24 |
void preventDefault(); |
void Serialize(in IPCMessagePtr aMsg, in boolean aSerializeInterfaceType); Violates the XPCOM interface guidelines |
void setTarget(in nsIDOMEventTarget aTarget); Native code only! |
void SetTrusted(in boolean aTrusted); Native code only! |
void stopImmediatePropagation(); |
void stopPropagation(); |
Attributes
| Attribute | Type | Description |
bubbles |
boolean |
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. Read only. |
cancelable |
boolean |
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. Read only. |
currentTarget |
|
Used to indicate the EventTarget whose EventListeners are currently being processed. This is particularly useful during capturing and bubbling. Read only. |
defaultPrevented |
boolean |
Used to indicate whether preventDefault() has been called for this event. Read only. |
eventPhase |
unsigned short |
Used to indicate which phase of event flow is currently being evaluated. Read only. |
explicitOriginalTarget |
|
The explicit original target of the event. If the event was retargeted for some reason other than an anonymous boundary crossing, this will be set to the target before the retargeting occurs. For example, mouse events are retargeted to their parent node when they happen over text nodes (bug 185889), and in that case .target will show the parent and .explicitOriginalTarget will show the text node. .explicitOriginalTarget differs from .originalTarget in that it will never contain anonymous content. Read only. |
isTrusted |
boolean |
Read only. |
originalTarget |
|
The original target of the event, before any retargetings. Read only. |
target |
|
Used to indicate the EventTarget to which the event was originally dispatched. Read only. |
timeStamp |
DOMTimeStamp |
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. Read only. |
type |
DOMString |
The name of the event (case-insensitive). The name must be an XML name. Read only. |
Constants
| Constant | Value | Description |
NONE |
0 |
The event is not being dispatched. |
CAPTURING_PHASE |
1 |
The current event phase is the capturing phase. |
AT_TARGET |
2 |
The event is currently being evaluated at the target EventTarget. |
BUBBLING_PHASE |
3 |
The current event phase is the bubbling phase. |
MOUSEDOWN |
0x00000001 |
|
MOUSEUP |
0x00000002 |
|
MOUSEOVER |
0x00000004 |
|
MOUSEOUT |
0x00000008 |
|
MOUSEMOVE |
0x00000010 |
|
MOUSEDRAG |
0x00000020 |
|
CLICK |
0x00000040 |
|
DBLCLICK |
0x00000080 |
|
KEYDOWN |
0x00000100 |
|
KEYUP |
0x00000200 |
|
KEYPRESS |
0x00000400 |
|
DRAGDROP |
0x00000800 |
|
FOCUS |
0x00001000 |
|
BLUR |
0x00002000 |
|
SELECT |
0x00004000 |
|
CHANGE |
0x00008000 |
|
RESET |
0x00010000 |
|
SUBMIT |
0x00020000 |
|
SCROLL |
0x00040000 |
|
LOAD |
0x00080000 |
|
UNLOAD |
0x00100000 |
|
XFER_DONE |
0x00200000 |
|
ABORT |
0x00400000 |
|
ERROR |
0x00800000 |
|
LOCATE |
0x01000000 |
|
MOVE |
0x02000000 |
|
RESIZE |
0x04000000 |
|
FORWARD |
0x08000000 |
|
HELP |
0x10000000 |
|
BACK |
0x20000000 |
|
TEXT |
0x40000000 |
|
ALT_MASK |
0x00000001 |
|
CONTROL_MASK |
0x00000002 |
|
SHIFT_MASK |
0x00000004 |
|
META_MASK |
0x00000008 |
Methods
Deserialize()
boolean Deserialize( in ConstIPCMessagePtr aMsg, out voidPtr aIter );
Parameters
-
aMsg -
aIter
Return value
duplicatePrivateData
void duplicatePrivateData();
Parameters
None.
GetInternalNSEvent()
nsEventPtr GetInternalNSEvent();
Parameters
None.
Return value
getPreventDefault()
Deprecated since Gecko 16.0 (Firefox 16.0 / Thunderbird 16.0 / SeaMonkey 2.13)
This feature has been removed from the Web. Though some browsers may still support it, it is in the process of being dropped. Do not use it in old or new projects. Pages or Web apps using it may break at any time.
defaultPrevented attribute instead. This method will be removed in future releases, see bug 691151.boolean getPreventDefault();
Parameters
None.
Return value
initEvent()
This 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.
void initEvent( in DOMString eventTypeArg, in boolean canBubbleArg, in boolean cancelableArg );
Parameters
-
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.
-
canBubbleArg - Specifies whether or not the event can bubble.
-
cancelableArg - Specifies whether or not the event's default action can be prevented.
IsDispatchStopped()
boolean IsDispatchStopped();
Parameters
None.
Return value
preventBubble()
Obsolete since Gecko 24 (Firefox 24 / Thunderbird 24 / SeaMonkey 2.21)
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.
stopPropagation() instead.void preventBubble();
Parameters
None.
preventCapture()
Obsolete since Gecko 24 (Firefox 24 / Thunderbird 24 / SeaMonkey 2.21)
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.
stopPropagation() instead.void preventCapture();
Parameters
None.
preventDefault()
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.
void preventDefault();
Parameters
None.
Serialize()
void Serialize( in IPCMessagePtr aMsg, in boolean aSerializeInterfaceType );
Parameters
-
aMsg -
aSerializeInterfaceType
setTarget
void setTarget( in nsIDOMEventTarget aTarget );
Parameters
-
aTarget
SetTrusted
void SetTrusted( in boolean aTrusted );
Parameters
-
aTrusted
stopImmediatePropagation()
Prevents other event listeners from being triggered and, unlike stopPropagation() its effect is immediate.
void stopImmediatePropagation();
Parameters
None.
stopPropagation()
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.
void stopPropagation();
Parameters
None.