优化更新代码，添加界面功能并整合

WPFluent/Services/INavigationService.cs

@@ -0,0 +1,81 @@
+
+
+
+using WPFluent.Controls;
+
+namespace WPFluent;
+
+/// <summary>
+/// Represents a contract with a <see cref="System.Windows.FrameworkElement"/> that contains <see
+/// cref="INavigationView"/>. Through defined <see cref="INavigationViewPageProvider"/> service allows you to use the
+/// Dependency Injection pattern in <c>WPF UI</c> navigation.
+/// </summary>
+public interface INavigationService
+{
+    /// <summary>
+    /// Provides direct access to the control responsible for navigation.
+    /// </summary>
+    /// <returns>Instance of the <see cref="INavigationView"/> control.</returns>
+    INavigationView GetNavigationControl();
+
+    /// <summary>
+    /// Navigates the NavigationView to the previous journal entry.
+    /// </summary>
+    /// <returns><see langword="true"/> if the operation succeeds. <see langword="false"/> otherwise.</returns>
+    bool GoBack();
+
+    /// <summary>
+    /// Lets you navigate to the selected page based on it's type. Should be used with <see
+    /// cref="INavigationViewPageProvider"/>.
+    /// </summary>
+    /// <param name="pageType"><see langword="Type"/> of the page.</param>
+    /// <returns><see langword="true"/> if the operation succeeds. <see langword="false"/> otherwise.</returns>
+    bool Navigate(Type pageType);
+
+    /// <summary>
+    /// Lets you navigate to the selected page based on it's tag. Should be used with <see
+    /// cref="INavigationViewPageProvider"/>.
+    /// </summary>
+    /// <param name="pageIdOrTargetTag">Id or tag of the page.</param>
+    /// <returns><see langword="true"/> if the operation succeeds. <see langword="false"/> otherwise.</returns>
+    bool Navigate(string pageIdOrTargetTag);
+
+    /// <summary>
+    /// Lets you navigate to the selected page based on it's type, Should be used with <see
+    /// cref="INavigationViewPageProvider"/>.
+    /// </summary>
+    /// <param name="pageType"><see langword="Type"/> of the page.</param>
+    /// <param name="dataContext">DataContext <see cref="object"/></param>
+    /// <returns><see langword="true"/> if the operation succeeds. <see langword="false"/> otherwise.</returns>
+    bool Navigate(Type pageType, object? dataContext);
+
+    /// <summary>
+    /// Lets you navigate to the selected page based on it's tag. Should be used with <see
+    /// cref="INavigationViewPageProvider"/>.
+    /// </summary>
+    /// <param name="pageIdOrTargetTag">Id or tag of the page.</param>
+    /// <param name="dataContext">DataContext <see cref="object"/></param>
+    /// <returns><see langword="true"/> if the operation succeeds. <see langword="false"/> otherwise.</returns>
+    bool Navigate(string pageIdOrTargetTag, object? dataContext);
+
+    /// <summary>
+    /// Synchronously adds an element to the navigation stack and navigates current navigation Frame to the
+    /// </summary>
+    /// <param name="pageType">Type of control to be synchronously added to the navigation stack</param>
+    /// <returns><see langword="true"/> if the operation succeeds. <see langword="false"/> otherwise.</returns>
+    bool NavigateWithHierarchy(Type pageType);
+
+    /// <summary>
+    /// Synchronously adds an element to the navigation stack and navigates current navigation Frame to the
+    /// </summary>
+    /// <param name="pageType">Type of control to be synchronously added to the navigation stack</param>
+    /// <param name="dataContext">DataContext <see cref="object"/></param>
+    /// <returns><see langword="true"/> if the operation succeeds. <see langword="false"/> otherwise.</returns>
+    bool NavigateWithHierarchy(Type pageType, object? dataContext);
+
+    /// <summary>
+    /// Lets you attach the control that represents the <see cref="INavigationView"/>.
+    /// </summary>
+    /// <param name="navigation">Instance of the <see cref="INavigationView"/>.</param>
+    void SetNavigationControl(INavigationView navigation);
+}