Bug 193226 – Web Inspector: Audit: provide a way to determine whether a give node has event listeners

• Component: Web Inspector
• Status: RESOLVED FIXED

[Devin Rousso]

This is similar to the Console's `getEventListeners` or `DOM.getEventListenersForNode`, except that it returns true/false.

[Devin Rousso]

<rdar://problem/46800005>

[Devin Rousso]

Created attachment 358566 [details]
Patch

[Devin Rousso]

Created attachment 358849 [details]
Patch

Throw an error when called outside of a test

[Joseph Pecoraro]

Comment on attachment 358849 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=358849&action=review

r=me

> LayoutTests/inspector/audit/run-dom.html:13
> +    function evaluateStringForTest(func, target, args) {
> +        return `DOM.${func}(document.querySelector("#${target}")${args ? ", " + JSON.stringify(args) : ""})`;
> +    }

This kind of code generation makes the test compact but hurts readability and comprehension. If this test ever fails someone has to wade through this to figure out whats going on, when instead there could have been a straightforward test with a little duplication but much clearer execution. You don't have to change the test, but this is something to consider in the future.

> LayoutTests/inspector/audit/run-dom.html:53
> +            let functions = new Map;
> +            for (let test of tests)
> +                functions.set(test.func, test);

So this only performs the last `hasEventListeners` test.

> Source/WebCore/inspector/InspectorAuditDOMUtilities.cpp:38
> +#define ERROR_IF_NO_ACTIVE_AUDIT() if (!m_auditAgent.hasActiveAudit()) return Exception { NotAllowedError, "Unable to run outside of an Inspector Audit"_s };

Style: Make this multiple lines to improve readability.

[Devin Rousso]

Comment on attachment 358849 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=358849&action=review

>> LayoutTests/inspector/audit/run-dom.html:53
>> +                functions.set(test.func, test);
> 
> So this only performs the last `hasEventListeners` test.

The point of this isn't really to test every case from above, more-so to just check that calling the function at all outside of a test will throw an error.  The arguments are irrelevant.

[Devin Rousso]

Created attachment 359145 [details]
Patch

[Devin Rousso]

Created attachment 359146 [details]
Patch

AUDIT => WebInspectorAudit

[EWS Watchlist]

Comment on attachment 359146 [details]
Patch

Attachment 359146 [details] did not pass ios-sim-ews (ios-simulator-wk2):
Output: https://webkit-queues.webkit.org/results/10756832

New failing tests:
imported/w3c/web-platform-tests/webrtc/simplecall-no-ssrcs.https.html

[EWS Watchlist]

Created attachment 359150 [details]
Archive of layout-test-results from ews121 for ios-simulator-wk2

The attached test failures were seen while running run-webkit-tests on the ios-sim-ews.
Bot: ews121  Port: ios-simulator-wk2  Platform: Mac OS X 10.13.6

[WebKit Commit Bot]

Comment on attachment 359146 [details]
Patch

Clearing flags on attachment: 359146

Committed r239987: <https://trac.webkit.org/changeset/239987>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.