Fix #8165: Ignore events bubbling through disabled elements.

Although #6911 fixed the case where event.target was disabled, it missed the case where the target was a sub-element.

src/event.js

@@ -398,33 +398,37 @@ jQuery.event = {
 		event.delegateTarget = this;
 
 		// Determine handlers that should run if there are delegated events
-		// Avoid disabled elements in IE (#6911) and non-left-click bubbling in Firefox (#3861)
-		if ( delegateCount && event.target.disabled !== true && !(event.button && event.type === "click") ) {
+		// Avoid non-left-click bubbling in Firefox (#3861)
+		if ( delegateCount && !(event.button && event.type === "click") ) {
 
 			// Pregenerate a single jQuery object for reuse with .is()
 			jqcur = jQuery(this);
 			jqcur.context = this.ownerDocument || this;
 
 			for ( cur = event.target; cur != this; cur = cur.parentNode || this ) {
-				selMatch = {};
-				matches = [];
-				jqcur[0] = cur;
-				for ( i = 0; i < delegateCount; i++ ) {
-					handleObj = handlers[ i ];
-					sel = handleObj.selector;
-
-					if ( selMatch[ sel ] === undefined ) {
-						selMatch[ sel ] = (
-							handleObj.quick ? quickIs( cur, handleObj.quick ) : jqcur.is( sel )
-						);
+			
+				// Don't process events on disabled elements (#6911, #8165)
+				if ( cur.disabled !== true ) {
+					selMatch = {};
+					matches = [];
+					jqcur[0] = cur;
+					for ( i = 0; i < delegateCount; i++ ) {
+						handleObj = handlers[ i ];
+						sel = handleObj.selector;
+
+						if ( selMatch[ sel ] === undefined ) {
+							selMatch[ sel ] = (
+								handleObj.quick ? quickIs( cur, handleObj.quick ) : jqcur.is( sel )
+							);
+						}
+						if ( selMatch[ sel ] ) {
+							matches.push( handleObj );
+						}
 					}
-					if ( selMatch[ sel ] ) {
-						matches.push( handleObj );
+					if ( matches.length ) {
+						handlerQueue.push({ elem: cur, matches: matches });
 					}
 				}
-				if ( matches.length ) {
-					handlerQueue.push({ elem: cur, matches: matches });
-				}
 			}
 		}
 

test/unit/event.js

@@ -1213,8 +1213,8 @@ test("Delegated events in SVG (#10791)", function() {
 	svg.remove();
 });
 
-test("Delegated events in forms (#10844; #11145)", function() {
-	expect(2);
+test("Delegated events in forms (#10844; #11145; #8165)", function() {
+	expect(3);
 
 	// Aliases names like "id" cause havoc
 	var form = jQuery(
@@ -1246,6 +1246,16 @@ test("Delegated events in forms (#10844; #11145)", function() {
 		.end()
 		.off("submit");
 
+	form
+		.append( '<button id="nestyDisabledBtn"><span>Zing</span></button>' )
+		.on( "click", "#nestyDisabledBtn", function() {
+			ok( true, "enabled/disabled button with nesty elements" );
+		})
+		.find( "span" ).trigger( "click" ).end()	// yep
+		.find( "#nestyDisabledBtn" ).prop( "disabled", true ).end()
+		.find( "span" ).trigger( "click" ).end()	// nope
+		.off( "click" );
+
 	form.remove();
 });