Bug 142603 – Web Inspector: Console Errors during provisional document loads get lost with "Clear Log on Reload"

• Component: Web Inspector
• Status: RESOLVED FIXED

[Joseph Pecoraro]

* SUMMARY
Console Errors during provisional document loads get lost with "Clear Log on Reload".

* STEPS TO REPRODUCE
1. Enable "Clear Log on Reload" in Web Inspector's console (context menu in Console Log View)
2. Inspect <https://docs.google.com/spreadsheets/d/1ch7X6RljdfAFjfGY926UkLrPxZTrcbIYg0bGmrJ8gHQ/edit?usp=sharing_eid> [you do not need access to the file]
3. Reload
  => error message shows in console then gets cleared

* NOTES

Order of events:

    -> Page.reload
      -> Page.frameWillStartLoading
      -> Network.requestWillBeSent

    -> Network.responseReceived (error)
      -> Console.messageAdded

    -> commit
      -> Console.messagesCleared
      -> Page.frameNavigated

So we receive the error during provisional loading, and auto-clear it. We should preserve these messages that relate more to the new page, not the old page.

<rdar://problem/20044957>

[Joseph Pecoraro]

Created attachment 248470 [details]
[PATCH] Proposed Fix

I tried an approach using a marker ConsoleSession in the JavaScriptLogViewController. It quickly got more complex then this, and being yet-another-Session had styling issues that I couldn't figure out. This approach is far simpler and gives expected behavior with very few drawbacks given the rare cases it would occur.

[Timothy Hatcher]

Comment on attachment 248470 [details]
[PATCH] Proposed Fix

View in context: https://bugs.webkit.org/attachment.cgi?id=248470&action=review

> Source/WebInspectorUI/ChangeLog:11
> +        Detect a provisional load has started to start save messages that come in at this time.

Whoa. Nice fix.

> Source/WebInspectorUI/UserInterface/Views/LogContentView.js:33
> +    // FIXME: Try to use a marker, instead of a list of messages that get re-added.

Yeah, that would be good. Maybe the console rework can fix this.

[WebKit Commit Bot]

Comment on attachment 248470 [details]
[PATCH] Proposed Fix

Clearing flags on attachment: 248470

Committed r181437: <http://trac.webkit.org/changeset/181437>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.