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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,54 @@ | ||
| // Copyright (c) 2022 .NET Foundation and Contributors. All rights reserved. | ||
| // Licensed to the .NET Foundation under one or more agreements. | ||
| // The .NET Foundation licenses this file to you under the MIT license. | ||
| // See the LICENSE file in the project root for full license information. | ||
|
|
||
| using Microsoft.Maui.Controls; | ||
|
|
||
| namespace ReactiveUI.Maui; | ||
|
|
||
| /// <summary> | ||
| /// ReactiveShell. | ||
| /// </summary> | ||
| /// <typeparam name="TViewModel">The type of the view model.</typeparam> | ||
| /// <seealso cref="Microsoft.Maui.Controls.Shell" /> | ||
| /// <seealso cref="ReactiveUI.IViewFor<TViewModel>" /> | ||
| public class ReactiveShell<TViewModel> : Shell, IViewFor<TViewModel> | ||
| where TViewModel : class | ||
| { | ||
| /// <summary> | ||
| /// The view model bindable property. | ||
| /// </summary> | ||
| public static readonly BindableProperty ViewModelProperty = BindableProperty.Create( | ||
| nameof(ViewModel), | ||
| typeof(TViewModel), | ||
| typeof(ReactiveShell<TViewModel>), | ||
| default(TViewModel), | ||
| BindingMode.OneWay, | ||
| propertyChanged: OnViewModelChanged); | ||
|
|
||
| /// <summary> | ||
| /// Gets or sets the ViewModel to display. | ||
| /// </summary> | ||
| public TViewModel? ViewModel | ||
| { | ||
| get => (TViewModel)GetValue(ViewModelProperty); | ||
| set => SetValue(ViewModelProperty, value); | ||
| } | ||
|
|
||
| /// <inheritdoc/> | ||
| object? IViewFor.ViewModel | ||
| { | ||
| get => ViewModel; | ||
| set => ViewModel = (TViewModel?)value; | ||
| } | ||
|
|
||
| /// <inheritdoc/> | ||
| protected override void OnBindingContextChanged() | ||
| { | ||
| base.OnBindingContextChanged(); | ||
| ViewModel = BindingContext as TViewModel; | ||
| } | ||
|
|
||
| private static void OnViewModelChanged(BindableObject bindableObject, object oldValue, object newValue) => bindableObject.BindingContext = newValue; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| // Copyright (c) 2022 .NET Foundation and Contributors. All rights reserved. | ||
| // Licensed to the .NET Foundation under one or more agreements. | ||
| // The .NET Foundation licenses this file to you under the MIT license. | ||
| // See the LICENSE file in the project root for full license information. | ||
|
|
||
| using System; | ||
| using Microsoft.Maui.Controls; | ||
| using Splat; | ||
|
|
||
| namespace ReactiveUI.Maui; | ||
|
|
||
| /// <summary> | ||
| /// ReactiveShellContent. | ||
| /// </summary> | ||
| /// <typeparam name="TViewModel">The type of the view model.</typeparam> | ||
| /// <seealso cref="Microsoft.Maui.Controls.ShellContent" /> | ||
| /// <seealso cref="ReactiveUI.IActivatableView" /> | ||
| public class ReactiveShellContent<TViewModel> : ShellContent, IActivatableView | ||
| where TViewModel : class | ||
| { | ||
| /// <summary> | ||
| /// The contract property. | ||
| /// </summary> | ||
| public static readonly BindableProperty ContractProperty = BindableProperty.Create( | ||
| nameof(Contract), | ||
| typeof(string), | ||
| typeof(ReactiveShellContent<TViewModel>), | ||
| null, | ||
| BindingMode.Default, | ||
| propertyChanged: ViewModelChanged); | ||
|
|
||
| /// <summary> | ||
| /// The view model property. | ||
| /// </summary> | ||
| public static readonly BindableProperty ViewModelProperty = BindableProperty.Create( | ||
| nameof(ViewModel), | ||
| typeof(TViewModel), | ||
| typeof(ReactiveShellContent<TViewModel>), | ||
| default(TViewModel), | ||
| BindingMode.Default, | ||
| propertyChanged: ViewModelChanged); | ||
|
|
||
| /// <summary> | ||
| /// Initializes a new instance of the <see cref="ReactiveShellContent{TViewModel}" /> class. | ||
| /// </summary> | ||
| public ReactiveShellContent() | ||
| { | ||
| var view = Locator.Current.GetService<IViewFor<TViewModel>>(Contract); | ||
| if (view is not null) | ||
| { | ||
| ContentTemplate = new DataTemplate(() => view); | ||
| } | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Gets or sets the view model. | ||
| /// </summary> | ||
| /// <value> | ||
| /// The view model. | ||
| /// </value> | ||
| public TViewModel? ViewModel | ||
| { | ||
| get => (TViewModel)GetValue(ViewModelProperty); | ||
| set => SetValue(ViewModelProperty, value); | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Gets or sets the contract for the view. | ||
| /// </summary> | ||
| /// <value> | ||
| /// The contract. | ||
| /// </value> | ||
| public string? Contract | ||
| { | ||
| get => (string?)GetValue(ContractProperty); | ||
| set => SetValue(ContractProperty, value); | ||
| } | ||
|
|
||
| private static void ViewModelChanged(BindableObject bindable, object oldValue, object newValue) | ||
| { | ||
| if (Locator.Current is null) | ||
| { | ||
| throw new NullReferenceException(nameof(Locator.Current)); | ||
| } | ||
|
|
||
| if (bindable is ReactiveShellContent<TViewModel> svm) | ||
| { | ||
| var view = Locator.Current.GetService<IViewFor<TViewModel>>(svm.Contract); | ||
| if (view is not null) | ||
| { | ||
| svm.ContentTemplate = new DataTemplate(() => view); | ||
| } | ||
| } | ||
| } | ||
| } |
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