Platform Specifics are not working

[jsuarezruiz]

Description

Defined Platform Specifics are not working on .NET MAUI.

Android

• Button UseDefaultPadding and UseDefaultShadow.
• Entry ImeOptions.
• ImageButton IsShadowEnabled, ShadowColor and ShadowRadius. With the new Shadows API we can achieve the same effect also on all platforms.
• ListView IsFastScrollEnabled.
• NavigationPage BarHeight.
• Page SendDisappearingEventOnPause, SendAppearingEventOnResume and ShouldPreserveKeyboardOnResume. With the new lifecycle events API we can achieve the same.
• Application WindowSoftInputModeAdjust.
• SwipeView SwipeTransitionMode.
• TabbedPage IsSwipePagingEnabled.
• TabbedPage IsSmoothScrollEnabled.
• ViewCell IsContextActionsLegacyModeEnabled. No longer necessary.
• VisualElement Elevation. With the new ZIndex property can achieve something similar.
• WebView MixedContentMode, EnableZoomControls and DisplayZoomControls.

iOS

• Application EnableAccessibilityScalingForNamedFontSizes. No longer necessary.
• Cell DefaultBackgroundColor.
• DatePicker UpdateMode.
• Entry CursorColor.
• Entry AdjustsFontSizeToFitWidth.
• FlyoutPage ApplyShadow.
• ContentPage ModalPresentationStyle.
• NavigationPage PrefersLargeTitles.
• NavigationPage IsNavigationBarTranslucent.
• ListView GroupHeaderStyle, RowAnimationsEnabled and SeparatorStyle.
• Application HandleControlUpdatesOnMainThread. No longer necessary.
• Application PanGestureRecognizerShouldRecognizeSimultaneously.
• NavigationPage HideNavigationBarSeparator and StatusBarTextColorMode.
• Page UseSafeArea
• PrefersHomeIndicatorAutoHidden, PrefersStatusBarHidden and PreferredStatusBarUpdateAnimation. ([iOS] Implement PrefersHomeIndicatorAutoHidden, PrefersStatusBarHidden and PreferredStatusBarUpdateAnimation Platform Specifics #19970)
• Picker UpdateMode.
• ScrollView ShouldDelayContentTouches.
• SearchBar SearchBarStyle.
• SwipeView SwipeTransitionMode.
• TabbedPage TranslucencyMode.
• TimePicker UpdateMode.
• VisualElement IsShadowEnabled, ShadowColor, ShadowOpacity and ShadowRadius. With the new Shadows API we can achieve the same effect also on all platforms.
• VisualElement IsLegacyColorModeEnabled. No longer necessary.
• VisualElement BlurEffect and CanBecomeFirstResponder.
• [regression/7.0.0] ISafeAreaView.IgnoreSafeArea isn't respected in .NET 7 #12823

Windows

• Application ImageDirectory.
• FlyoutPage CollapseStyle and CollapsedPaneWidth. While in Xamarin.Forms we used a custom control called FlyoutPageControl where we included properties to manage this Platform Specifics, in .NET MAUI we use RootNavigationView https://docs.microsoft.com/en-us/windows/winui/api/microsoft.ui.xaml.controls.navigationview?view=winui-3.0 without this options without customize the control.
• InputView DetectReadingOrderFromContent.
• ListView SelectionMode.
• Page ToolbarPlacement.
• RefreshView RefreshPullDirection.
• SearchBar IsSpellCheckEnabled.
• TabbedPage HeaderIconsEnabled. ([Windows] Implement TabbedPage HeaderIconsEnabled Platform Specific #19969)
• VisualElement AccessKey, AccessKeyPlacement, AccessKeyHorizontalOffset and AccessKeyVerticalOffset.
• VisualElement IsLegacyColorModeEnabled. No longer necessary.
• WebView ExecutionMode. We need to review this case. In Xamarin.Forms we was using Windows.UI.Xaml.Controls.WebView where we can define if hosts HTML content on the UI thread or on a non-UI thread. https://docs.microsoft.com/en-us/uwp/api/windows.ui.xaml.controls.webviewexecutionmode?view=winrt-22000. However, in .NET MAUI we use Microsoft.UI.Xaml.Controls.Webview2 without this option. (see Show platform UI for alert/prompt in webviews #6963)
• WebView IsJavaScriptAlertEnabled. (see Show platform UI for alert/prompt in webviews #6963)

More information: https://docs.microsoft.com/en-us/xamarin/xamarin-forms/platform/

Steps to Reproduce

Verified with the .NET MAUI Gallery.

To verify it just download https://github.com/davidbritch/dotnet-maui-samples/tree/main/PlatformIntegration/PlatformSpecifics
Launch the App in any platform and test any samples.

Version with bug

Preview 14 (current)

Last version that worked well

Unknown/Other

Affected platforms

iOS, Android, Windows, macOS

Affected platform versions

Windows SDK 10.0.17134.0, Android 11, iOS 15

Did you find any workaround?

No response

Relevant log output

No response

[davidbritch]

I think we could also remove:

Android: TabbedPage.BarItemColor/BarSelectedItemColor (justification: TabbedPage has SelectedTabColor/UnselectedTabColor properties).
Android: ViewCell.IsContextActionsLegacyModeEnabled
Android: VisualElement.Elevation (justification: MAUI has ZIndex property).
iOS: Application.EnableAccessibilityScalingForNamedFontSizes (justification: there are no named font sizes).

I'm unsure whether this can be removed:

iOS: Application.HandleControlUpdatesOnMainThread (can't remember why this was needed).

[victorsigga]

Hello guys, toolbar placement on UWP is on the list of features to be developed soon ?

[mattleibow]

@PureWeen didn't we implement safe areas already... Is just the platform specific not hooked up because we now have the general feature on all the things? @hartez ?

[Zhanglirong-Winnie]

Verified this issue with Visual Studio Enterprise 17.8.0 Preview 2.0. Can be repro via sample project.
dotnet-maui-samples-main.zip

[d2dyno1]

When can we expect wider customization for RootNavigationView? I'm looking to change "PaneDisplayMode" as well as "PaneTitle" on WinUI's NavigationView or at least use a workaround which would also move the hamburger button out of the titlebar area

[jsuarezruiz]

Because NavigationPage reuse a lot of code from Xamarin.Forms renderer, NavigationPage BarHeight is working:

Marked as done.

[jsuarezruiz]

We already have specific issues created by the pending platform specifics. Close this big issue in favor of the specific ones.