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[omnibox] "TypeError: this._searchFinishedCallback is not a function"

Assigned to



WebExtensions: Frontend
a month ago
a month ago


(Reporter: robwu, Assigned: mattw)


(Blocks: 1 bug)

52 Branch

Firefox Tracking Flags

(Not tracked)


(Whiteboard: [omnibox]triaged)

MozReview Requests


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(1 attachment)



a month ago
Version: Firefox Nightly: 54.0a1 (2017-02-07)

Steps to reproduce:

1. Create a directory with the following manifest.json:
    "name": "omnibox test",
    "version": "1",
    "manifest_version": 2,
    "omnibox": {
        "keyword": "test"
2. Visit about:debugging and select manifest.json.
3. Focus the awesomebar and type "test " (including space).
4. Press backspace.
5. Open the global console (which implicitly closes the suggestions list).

The console shows the following error. The first error occurs after step 4, the second error after step 5.

this._searchFinishedCallback is not a function  ExtensionSearchHandler.jsm:72
	cancel resource://gre/modules/ExtensionSearchHandler.jsm:72:5
	handleInputCancelled resource://gre/modules/ExtensionSearchHandler.jsm:289:5
	Search.prototype.execute< resource://gre/components/UnifiedComplete.js:992:7
	next self-hosted:1117:9
	TaskImpl_run resource://gre/modules/Task.jsm:319:42
	bound TaskImpl_run self-hosted:955:17
TypeError: this._searchFinishedCallback is not a function  ExtensionSearchHandler.jsm:72:5
	cancel resource://gre/modules/ExtensionSearchHandler.jsm:72:5
	handleInputCancelled resource://gre/modules/ExtensionSearchHandler.jsm:289:5
	onxblblur chrome://browser/content/urlbarBindings.xml:1240:11


a month ago
Blocks: 1166831
Component: WebExtensions: General → WebExtensions: Frontend
Priority: -- → P3
Whiteboard: [omnibox]triaged

Comment 1

a month ago
This bug occurs specifically when an input session is cancelled or submitted after an input session is started but before any onInputChanged events are fired.
Comment hidden (mozreview-request)


a month ago
Assignee: nobody → mwein

Comment 3

a month ago
Comment on attachment 8837112 [details]
Bug 1339250 - Fix error caused by ending an input session immediately after the session is started

::: toolkit/components/places/ExtensionSearchHandler.jsm:80
(Diff revision 1)
>      this._extension.emit(eventName);
>    }
>    end(eventName, text, disposition) {
> +    if (this._searchFinishedCallback) {
> -    this._searchFinishedCallback();
> +      this._searchFinishedCallback();

It seems that the callback is expected to be called only once (, so maybe it would be good to explicitly null the callback (also the `_suggestionsCallback`) to communicate intent?

And does `addSuggestions` need a null-check too?
Attachment #8837112 - Flags: review?(rob) → review+
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