Looks like the same problem we just discussed ;-).
In fbs:
this.hookCalls(debuggr.onFunctionCall, false);
passes in a function, which is assigned to 'callback':
hookCalls: function(callBack, unhookAtBottom)
...
contextCached = callBack(contextCached, frame, hookFrameCount, true);
So 'this' is not set.
this.onFunctionCall = bind(this.onFunctionCall, this);
in the module initialize should fix it. I am puzzled as to why this
did not come up when we were experimenting with traceAll....
On Jan 6, 4:54 pm, Manoj <[email protected]> wrote:
> After updating to the latest (r1641), I'm running into a weird problem
> that I haven't been able to debug so far.
> In my extension I'm registering a listener with Firebug.Debugger as
> follows:
>
> initContext: function(context, persistedState)
> {
> ...
> Firebug.Debugger.addListener(jsObserver);
> FBTrace.sysout("listeners = " + Firebug.Debugger.fbListeners);
> ...
>
> }
>
> I've verified right after the addListener() call that
> Firebug.Debugger.fbListeners has the correct listener object. Yet,
> when the onFunctionCall() callback is dispatched, the following
> exception is encountered:
>
> "Exception in lib.dispatch onFunctionCall listeners is undefined"
>
> Stack:
> firebug1.4/components/firebug-trace-service.js (251) [...]
> firebug1.4/components/firebug-trace-service.js (232) [...]
> chrome://firebug/content/lib.js (2445) [...]
> chrome://firebug/content/debugger.js (921) [...]
> firebug1.4/components/firebug-service.js (2156) [...]
> () [...]
>
> Properties:
> stack:
> "((void 0),"onFunctionCall",[object Array])@chrome://firebug/content/
> lib.js:2427\n(null,[object Object],1,true)@chrome://firebug/content/
> debugger.js:921\ncallHook([object XPCWrappedNative_NoHelper],2)
> @firebug1.4/components/firebug-service.js:2156\nonclick([object
> MouseEvent])@http://clicktest.html:0\n";
>
> It appears that Firebug.Debugger.fbListeners is somehow null now. The
> problem seems to be introduced at change 1501.
>
> I'm using firebug code from:http://fbug.googlecode.com/svn/branches/firebug1.4
>
> Regards,
> Manoj
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