fix #33 Need a way to know if an event handler attribute value was provi...

hsp/rt/cptwrapper.js

@@ -211,8 +211,8 @@ var CptWrapper = klass({
                 }
                 if (att.type === "callback") {
                     // create an even callback function
-                    this.createEventFunction(k.slice(2));
-                    cpt[k].isEmpty=(iAtt===undefined);
+                    var isEmpty = !this.createEventFunction(k.slice(2));
+                    cpt[k].isEmpty = isEmpty;
                     continue;
                 } else if (att.type === "template") {
                     v=null;
@@ -268,6 +268,17 @@ var CptWrapper = klass({
                 self.nodeInstance.onEvent(evtData);
             }
         };
+        if (this.nodeInstance) {
+            var evh = this.nodeInstance.evtHandlers;
+            if (evh) {
+                for (var i = 0; i < evh.length; i++) {
+                    if (evh[i].evtType === evtType) {
+                        return true;
+                    }
+                }
+            }
+        }
+        return false;
     },
 
     /**

test/rt/cptwrapper.spec.hsp

@@ -192,6 +192,9 @@ describe("Component Nodes", function () {
     expect(c.value).to.equal(0);
     expect(c.isValid).to.equal(false);
 
+    //Issue #33
+    expect(c.onbeforereset.isEmpty).to.be.ok();
+
     cw.$dispose();
     expect(cw.cpt).to.equal(null);
     expect(c["+json:observers"]).to.equal(undefined);
@@ -334,12 +337,24 @@ it("tests a component inside another template", function() {
 
     expect(resetCount).to.equal(1); //validate that "onbeforereset" callback has been called
     expect(lastEvtType).to.equal("beforereset");
-    expect(isBrCbEmpty).to.equal(true);
+    expect(isBrCbEmpty).to.equal(false);
     expect(lastResetArg).to.equal(123);
     expect(lastEvtType2).to.equal("afterreset");
     expect(lastEvtOldValue2).to.equal(42);
   });
 
+  it("tests if callback is not empty (issue #33)", function() {
+    isBrCbEmpty=false;
+    var d={value:'42'};
+    var n=test(d);
+    var cptButton=n.node.childNodes[3];
+
+    fireEvent("click",cptButton);
+    hsp.refresh();
+
+    expect(isBrCbEmpty).to.equal(false); 
+  });
+
   it("tests if callback is empty", function() {
     isBrCbEmpty=false;
     var d={value:'42'};