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https://issues.apache.org/jira/browse/CB-7179?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16503454#comment-16503454
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ASF GitHub Bot commented on CB-7179:
------------------------------------
dpa99c opened a new pull request #271: CB-7179 (iOS): Add WKWebView support for
iOS
URL: https://github.com/apache/cordova-plugin-inappbrowser/pull/271
### Platforms affected
iOS
### What does this PR do?
This PR adds support for WKWebView to the InappBrowser plugin on iOS.
It:
- builds on the initial work done by [Shazron](https://github.com/shazron)
on the [wkwebview
branch](https://github.com/apache/cordova-plugin-inappbrowser/tree/wkwebview)
branch.
- takes on feedback from #245
- contains some major changes, but with [UIWebView now deprecated in iOS
12](https://developer.apple.com/documentation/uikit/uiwebview?changes=_6&language=objc),
then getting this plugin to support WKWebView seems now to be a higher
priority.
Additional changes in this PR include:
- Separate UIWebView and WKWebView implementations which are invoked by an
intermediate dispatcher dependent on the `usewkwebview` option.
- Adds shared cookie pool via CDVWKProcessPoolFactory, enabling app Webview
to share cookies with IAB Webviews (pulled from [Niklas
Merz](https://github.com/NiklasMerz/cordova-plugin-inappbrowser/tree/add-webview))
- Implements WKWebView delegates to make event handlers and script injection
work
- Replaces iframe bridge with WKScriptMessageHandler bridge
- Updates the automated and manual tests for this plugin to test both
webview implementations when running on iOS.
Any feedback/suggestions/bug reports/collaboration to improve the
implementation in this PR would be most welcome.
### What testing has been done on this change?
The automated and manual tests have been run as [outlined
here](https://github.com/apache/cordova-plugin-inappbrowser/blob/master/CONTRIBUTING.md#running-plugin-tests)
and all tests appear to pass for the iOS platform against both webview
implementations.
Note: other platforms have not been tested because they have not been
changed.
### Notes
- A restructure of the native iOS implementation was necessary in order to
enable the UIWebView and WKWebView implementations to exist side-by-side.
- No dependency has been added on
[cordova-plugin-wkwebview-engine](https://github.com/apache/cordova-plugin-wkwebview-engine)
for the iOS platform
- If `usewkwebview=yes` is set and the WKWebView engine classes don't
exist in the project, the 'loaderror' callback will be invoked when attempting
to call `InappBrowser.open()`.
- Conditional pre-processor statements [are
used](https://github.com/dpa99c/cordova-plugin-inappbrowser/blob/CB-7179/src/ios/CDVInAppBrowser.m#L36)
to detect the presence of WKWebViewEngine classes at build time to prevent
build errors if not present
- Note: the [__has_include
macro](https://clang.llvm.org/docs/LanguageExtensions.html#include-file-checking-macros)
appears to only work in the device environment.
- On the iOS Simulator it always evaluates to false.
- This means the WKWebView implementation only works on
devices - on the Simulator `usewkwebview=yes` will result in a `loaderror`.
- The same classes exist in
[cordova-plugin-ionic-webview](https://github.com/ionic-team/cordova-plugin-ionic-webview)
as in `cordova-plugin-inappbrowser` so `usewkwebview=yes` will work with both.
- There is currently a fair bit of duplication in the UIWebView vs WKWebView
implementations. This could be cleaned up with some refactoring using
inheritance, although this is tricky in Objective-C (not my strongest language).
- `clearsessioncache` is yet to be implemented in the WKWebView
implementation. This is because the [httpCookieStore
interface](https://developer.apple.com/documentation/webkit/wkwebsitedatastore/2881956-httpcookiestore?language=objc)
was only added in iOS 11 and so to support iOS 10 and below, a different
mechanism must be used to find and remove session cookies. This is not trivial
and may not even be possible.
- The WKWebView implementation was initially developed as a separate
WKWebView-only version of this plugin:
[cordova-plugin-inappbrowser-wkwebview](https://github.com/dpa99c/cordova-plugin-inappbrowser-wkwebview)
- A Cordova test project specifically to test switching between Webview
implementations can be [found
here](https://github.com/dpa99c/cordova-plugin-inappbrowser-test/tree/dual_ios_webviews).
### Checklist
- [x] [Reported an issue](http://cordova.apache.org/contribute/issues.html)
in the JIRA database
- https://issues.apache.org/jira/browse/CB-7179
- [x] Commit message follows the format: "CB-3232: (android) Fix bug with
resolving file paths", where CB-xxxx is the JIRA ID & "android" is the platform
affected.
- CB-7179 (iOS): Add support to optionally use WKWebView for iOS
- [x] Added automated test coverage as appropriate for this change.
- No additional test coverage needed as no functionality has changed,
just the implementation.
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> [InAppBrowser][iOS 8] Update to support WKWebView
> -------------------------------------------------
>
> Key: CB-7179
> URL: https://issues.apache.org/jira/browse/CB-7179
> Project: Apache Cordova
> Issue Type: Sub-task
> Components: cordova-plugin-inappbrowser
> Environment: iOS 8
> Reporter: Shazron Abdullah
> Priority: Major
>
> support dual use with UIWebView
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