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Type:
Bug
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Resolution: Unresolved
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Priority:
Major
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None
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Affects Version/s: 10.0.0, 10.2.1
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Component/s: None
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Security Level: Jimmy
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None
Steps to Reproduce
Add data-handler to zk.xml:
<client-config>
<data-handler>
<name>foo</name>
<script>
function (wgt, dataValue) {
console.log(dataValue);
}
</script>
</data-handler>
</client-config>
Run attached zul
Click on "onBind Listener" <- No error
Click on "data-handler"
Current Result
Uncaught TypeError: Failed to mount: Cannot read properties of undefined (reading '0') at Widget.fireX (zk.wpd:5:1152660) at Widget.fire (zk.wpd:5:1153444) at zk.wpd:5:1145125 at window.zk.mount_.doAfterMount (zk.wpd:5:1084780) at window.zk.mount_.mtAU0 (zk.wpd:5:1084606) at window.zk.mount_.mtAU (zk.wpd:5:1084531) at zkx (zk.wpd:5:1086812) at zkx_ (zk.wpd:5:1087332) at Object.addChd (zk.wpd:5:32071) at window.zk.au_.doProcess (zk.wpd:5:8896)
Expected Result
No error
Debug Information
callOnce unlisten block is called during the onBind listener
zk.Widget.prototype.fireX invokes the listeners sequentially.
a direct onBind listener is placed in the lsns array before the callOnce listener.
setWidgetListener onBind is called
callOnce is called and self-removes
a data-handler is place after the callOnce listener in the array
j is 0: lsns array looks like [callOnceLsnr, datahandlerLsnr]
lsnr[j] is callOnceLsrn, lsnr[j] function is called, which removes callOnceLsrn from the lsnr array
lsnr now looks like [datahandlerLsnr], for completes a loop, j is 1
attempt to invoke lsnr[1][0]() where lsnr[1] is null
Workaround
<script><![CDATA[ zk.afterLoad("zk", function(){ window.zk.mount_.create = function(e, z, M) { var b, t, n, c = z[0], O = z[1], r = z[2] || {}, a = z[3] || {}; if (0 === c) { var A = (c = zk.cut(r, "wc")) ? zk.$import(c) : zk.Page; (t = new A({ uuid: O },zk.cut(r, "ct"))).inServer = !0, e && e.appendChild(t, M) } else { if ((n = "#stub" == c) || "#stubs" == c) { if (!(t = (p || o.$)(O) || zAu._wgt$(O))) throw "Unknown stub " + O; var d = new zk.Widget; (t.desktop || 9 === t.z_rod) && t.unbind(), zk._wgtutl.replace(t, d, n) } else { if (!(A = zk.$import(c))) throw "Unknown widget: " + c; (t = new A(window.zkac)).inServer = !0, t.uuid = O; var q = z[5]; q && t.setMold(q) } e && e.appendChild(t, M), zk.cut(r, "z$is") && (t.z$is = !0, t._fellows = {}); var u = zk.cut(r, "z$al"); u && zk.afterLoad((function() { for (var e in u) t.set(e, u[e](), !0) } )); var l = zk.cut(a, "z$al"); l && zk.afterLoad((function() { for (var e = 0, z = l.length; e < z; e++) { var M = l[e]; for (var o in M) t.set(o, M[o](), !0) } } )) } for (b in r) t.set(b, r[b], !0); for (b in a) for (var W = a[b], h = 0, R = W.length; h < R; h++) { var g = W[h]; t.set(b, g, !0) } for (var m = 0, L = z[4], _ = L.length; m < _; ++m) window.zk.mount_.create(t, L[m]); if (zk.loading) zk.afterLoad((function() { return t.afterCompose_() } )); else if (e) t.afterCompose_(); else { var callOnce_1 = function() { t.afterCompose_(); setTimeout(function(){ t.unlisten({ onBind: callOnce_1 }) },0); }; t.listen({ onBind: callOnce_1 }) } return t } }); ]]></script>
