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https://issues.apache.org/jira/browse/CB-538?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13257831#comment-13257831
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Joe Bowser commented on CB-538:
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See CB-132
> Change onReceivedError logic to allow scripts to handle iframe loading errors
> -----------------------------------------------------------------------------
>
> Key: CB-538
> URL: https://issues.apache.org/jira/browse/CB-538
> Project: Apache Callback
> Issue Type: Improvement
> Components: Android
> Affects Versions: 1.6.0
> Reporter: Pavel Zubkou
> Assignee: Joe Bowser
>
> If I understand correctly, onReceivedError handles WebView loading errors,
> both for a document loaded into a WebView and for iframes loaded inside the
> document. Currently onReceivedError has actually to outcomes: load page
> specified via errorUrl property into WebView or show error dialog and close
> activity.
> Both outcomes are not desired when error came from loading iframe since
> application loaded into the WebView loses control of all events and can not
> handle iframe loading error.
> I think it would be more appropriate to check failingUrl and if it does not
> equals to this.url - just do not catch error in onReceivedError, thus
> allowing scripts from document loaded into WebView handle iframe loading
> errors.
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