terminal/src/cascadia/TerminalSettingsEditor/MainPage.idl

// Copyright (c) Microsoft Corporation.
// Licensed under the MIT license.

namespace Microsoft.Terminal.Settings.Editor
{
    // Due to a XAML Compiler bug, it is hard for us to propagate an HWND into a XAML-using runtimeclass.
    // To work around that, we'll only propagate the HWND (when we need to) into the settings' toplevel page
    // and use IHostedInWindow to hide the implementation detail where we use IInitializeWithWindow (shobjidl_core)
    // https://github.com/microsoft/microsoft-ui-xaml/issues/3331
    interface IHostedInWindow
    {
        Boolean TryPropagateHostingWindow(IInspectable i);
        UInt64 GetHostingWindow();
    }

    [default_interface] runtimeclass MainPage : Windows.UI.Xaml.Controls.Page, IHostedInWindow
    {
        MainPage(Microsoft.Terminal.Settings.Model.CascadiaSettings settings);

        void UpdateSettings(Microsoft.Terminal.Settings.Model.CascadiaSettings settings);
        event Windows.Foundation.TypedEventHandler<Object, Microsoft.Terminal.Settings.Model.SettingsTarget> OpenJson;

        // Due to the aforementioned bug, we can't use IInitializeWithWindow _here_ either.
        // Let's just smuggle the HWND in as a UInt64 :|
        void SetHostingWindow(UInt64 window);
    }
}