[Webkit-unassigned] [Bug 258558] New: `PageGroup`'s `Preferences`are ignored when creating `WKWebView`
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Tue Jun 27 04:55:33 PDT 2023
https://bugs.webkit.org/show_bug.cgi?id=258558
Bug ID: 258558
Summary: `PageGroup`'s `Preferences`are ignored when creating
`WKWebView`
Product: WebKit
Version: WebKit Nightly Build
Hardware: Unspecified
OS: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: Tools / Tests
Assignee: webkit-unassigned at lists.webkit.org
Reporter: vitaly at igalia.com
There are two APIs to create a `WKWebView`:
- `PlatformWebView(WKPageConfigurationRef configuration)`
- `PlatformWebView(WKContextRef contextRef, WKPageGroupRef pageGroupRef)`
If we want to set some preferences, it's quite straightforward using `WKPageConfigurationRef`:
```
auto configuration = adoptWK(WKPageConfigurationCreate());
auto preferences = adoptWK(WKPreferencesCreate());
WKPageConfigurationSetPreferences(configuration.get(), preferences.get());
```
When using the context and the page group, we don't have access to the configuration object.
But it's possible to set preferences to the page group:
```
WKRetainPtr<WKPageGroupRef> pageGroup = adoptWK(WKPageGroupCreateWithIdentifier(Util::toWK("GetUserMedia").get()));
WKPreferencesRef preferences = WKPageGroupGetPreferences(pageGroup.get());
```
When we then create an instance of `WKWebView` we copy `WKPageConfigruation` into `WKWebViewConfigruation` and pass them as a parameter:
```
auto configuration = adoptNS([WKWebViewConfiguration new]);
if (auto* preferences = WKPageConfigurationGetPreferences(pageConfiguration))
configuration.get().preferences = (WKPreferences *)preferences;
m_view = [[wkViewSubclass alloc] initWithFrame:rect configuration:configuration.get()];
```
But we ignore pageGroup's preferences.
I must say, that it's really confusing to have two levels of `Preferences`:
WKPageConfiguration
|-WKPreferences
|-WKPageGroup
|-WKPreferences
but for now, we should at least copy pageGroup's preferences to WebViewConfiguration.
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