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Allow specific custom events to exit trigger early if there are no handlers bound for that type.

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This commit is contained in:
Dave Methvin 2011-04-06 23:41:47 -04:00
parent bbd9c776ea
commit 2f11ba7c98
1 changed files with 15 additions and 2 deletions
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13
src/event.js
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@ -277,6 +277,14 @@ jQuery.event = {
} }
}, },
// Events that are safe to short-circuit if no handlers are attached.
// Native DOM events should not be added, they may have inline handlers.
customEvent: {
"getData": true,
"setData": true,
"changeData": true
},
trigger: function( event, data, elem ) { trigger: function( event, data, elem ) {
// Event object or event type // Event object or event type
var type = event.type || event, var type = event.type || event,
@ -306,6 +314,11 @@ jQuery.event = {
event.namespace = namespaces.join("."); event.namespace = namespaces.join(".");
event.namespace_re = new RegExp("(^|\\.)" + namespaces.join("\\.(?:.*\\.)?") + "(\\.|$)"); event.namespace_re = new RegExp("(^|\\.)" + namespaces.join("\\.(?:.*\\.)?") + "(\\.|$)");
if ( jQuery.event.customEvent[ type ] && !jQuery.event.global[ type ] ) {
// No jQuery handlers for this event type, and it can't have inline handlers
return;
}
// Handle a global trigger // Handle a global trigger
if ( !elem ) { if ( !elem ) {
// Don't bubble custom events when global (to avoid too much overhead) // Don't bubble custom events when global (to avoid too much overhead)