Přidání stránky přehledu všech poznámek, přepsání na MVVM.

winui-learning/winui-learning/App.xaml.cs

@@ -1,20 +1,4 @@
 using Microsoft.UI.Xaml;
-using Microsoft.UI.Xaml.Controls;
-using Microsoft.UI.Xaml.Controls.Primitives;
-using Microsoft.UI.Xaml.Data;
-using Microsoft.UI.Xaml.Input;
-using Microsoft.UI.Xaml.Media;
-using Microsoft.UI.Xaml.Navigation;
-using Microsoft.UI.Xaml.Shapes;
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Runtime.InteropServices.WindowsRuntime;
-using Windows.ApplicationModel;
-using Windows.ApplicationModel.Activation;
-using Windows.Foundation;
-using Windows.Foundation.Collections;
 
 // To learn more about WinUI, the WinUI project structure,
 // and more about our project templates, see: http://aka.ms/winui-project-info.

winui-learning/winui-learning/MainWindow.xaml

@@ -31,7 +31,7 @@
             </TitleBar.IconSource>
         </TitleBar>
 
-        <Frame x:Name="rootFrame" Grid.Row="1" 
+        <Frame x:Name="rootFrame" Grid.Row="1"
-               SourcePageType="views:NotePage"/>
+                SourcePageType="views:AllNotesPage"/>
     </Grid>
 </Window>

winui-learning/winui-learning/MainWindow.xaml.cs

@@ -13,6 +13,8 @@ public sealed partial class MainWindow : Window
     public MainWindow()
     {
         InitializeComponent();
+        ExtendsContentIntoTitleBar = true;
+        SetTitleBar(AppTitleBar);
     }
 }
 

winui-learning/winui-learning/Models/AllNotesModel.cs

@@ -0,0 +1,52 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Threading.Tasks;
+using Windows.Storage;
+
+namespace winui_learning.Models;
+
+public class AllNotesModel
+{
+    public ObservableCollection<NoteModel> Notes { get; set; } = new ObservableCollection<NoteModel>();
+
+    public AllNotesModel()
+    {
+        LoadNotes();
+    }
+
+    public async void LoadNotes()
+    {
+        Notes.Clear();
+        // Get the folder where the notes are stored.
+        StorageFolder storageFolder =
+                      ApplicationData.Current.LocalFolder;
+        await GetFilesInFolderAsync(storageFolder);
+    }
+
+    private async Task GetFilesInFolderAsync(StorageFolder folder)
+    {
+        // Each StorageItem can be either a folder or a file.
+        IReadOnlyList<IStorageItem> storageItems =
+                                    await folder.GetItemsAsync();
+        foreach (IStorageItem item in storageItems)
+        {
+            if (item.IsOfType(StorageItemTypes.Folder))
+            {
+                // Recursively get items from subfolders.
+                await GetFilesInFolderAsync((StorageFolder)item);
+            }
+            else if (item.IsOfType(StorageItemTypes.File))
+            {
+                StorageFile file = (StorageFile)item;
+                NoteModel note = new NoteModel()
+                {
+                    Filename = file.Name,
+                    Text = await FileIO.ReadTextAsync(file),
+                    Date = file.DateCreated.DateTime
+                };
+                Notes.Add(note);
+            }
+        }
+    }
+}

winui-learning/winui-learning/Models/NoteModel.cs

@@ -1,12 +1,41 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
 using System.Threading.Tasks;
+using Windows.Storage;
 
 namespace winui_learning.Models
 {
-    internal class NoteModel
+    public class NoteModel
     {
+        private StorageFolder storageFolder = ApplicationData.Current.LocalFolder;
+        public string Filename { get; set; } = string.Empty;
+        public string Text { get; set; } = string.Empty;
+        public DateTime Date { get; set; } = DateTime.Now;
+
+        public NoteModel()
+        {
+            Filename = "notes" + DateTime.Now.ToBinary().ToString() + ".txt";
+        }
+
+        public async Task SaveAsync()
+        {
+            // Save the note to a file.
+            StorageFile noteFile = (StorageFile)await storageFolder.TryGetItemAsync(Filename);
+            if (noteFile is null)
+            {
+                noteFile = await storageFolder.CreateFileAsync(Filename, CreationCollisionOption.ReplaceExisting);
+            }
+            await FileIO.WriteTextAsync(noteFile, Text);
+        }
+
+        public async Task DeleteAsync()
+        {
+            // Delete the note from the file system.
+            StorageFile noteFile = (StorageFile)await storageFolder.TryGetItemAsync(Filename);
+            if (noteFile is not null)
+            {
+                await noteFile.DeleteAsync();
+            }
+        }
     }
 }
+

winui-learning/winui-learning/Views/AllNotesPage.xaml

@@ -0,0 +1,69 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Page
+    x:Class="winui_learning.Views.AllNotesPage"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:models="using:winui_learning.Models"
+    mc:Ignorable="d">
+    
+    <Page.Resources>
+        <DataTemplate x:Key="NoteItemTemplate" 
+                      x:DataType="models:NoteModel">
+            <ItemContainer CornerRadius="{StaticResource OverlayCornerRadius}">
+                
+                <Grid Background="{ThemeResource CardBackgroundFillColorDefaultBrush}"
+                      BorderThickness="1" 
+                      BorderBrush="{ThemeResource CardStrokeColorDefaultBrush}"
+                      CornerRadius="{StaticResource OverlayCornerRadius}">
+                    
+                    <Grid.RowDefinitions>
+                        <RowDefinition Height="120"/>
+                        <RowDefinition Height="Auto"/>
+                    </Grid.RowDefinitions>
+                    
+                    <TextBlock Text="{x:Bind Text}" Margin="12,8"
+                               TextWrapping="Wrap"
+                               TextTrimming="WordEllipsis"
+                               />
+                    
+                    <Border Grid.Row="1" Padding="8,6,0,6"
+                            Background="{ThemeResource SubtleFillColorSecondaryBrush}">
+                        <TextBlock Text="{x:Bind Date}"
+                                   Style="{StaticResource CaptionTextBlockStyle}"
+                                   Foreground="{ThemeResource TextFillColorSecondaryBrush}"/>
+                    </Border>
+                </Grid>
+            </ItemContainer>
+        </DataTemplate>
+    </Page.Resources>
+
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="*"/>
+        </Grid.RowDefinitions>
+
+        <CommandBar DefaultLabelPosition="Right">
+            <AppBarButton Icon="Add" Label="New note"/>
+            <CommandBar.Content>
+                <TextBlock Text="Quick notes" Margin="16,8" 
+                           Style="{ThemeResource SubtitleTextBlockStyle}"/>
+            </CommandBar.Content>
+        </CommandBar>
+
+        <ItemsView 
+            ItemsSource="{x:Bind allNotesModel.Notes}" 
+            Grid.Row="1" Padding="16" 
+            ItemTemplate="{StaticResource NoteItemTemplate}">
+            
+            <ItemsView.Layout>
+                <UniformGridLayout MinItemWidth="200"
+                                   MinColumnSpacing="12"
+                                   MinRowSpacing="12"
+                                   ItemsJustification="Start"/>
+            </ItemsView.Layout>
+        </ItemsView>
+    </Grid>
+</Page>

winui-learning/winui-learning/Views/AllNotesPage.xaml.cs

@@ -0,0 +1,18 @@
+using Microsoft.UI.Xaml.Controls;
+using winui_learning.Models;
+
+// To learn more about WinUI, the WinUI project structure,
+// and more about our project templates, see: http://aka.ms/winui-project-info.
+
+namespace winui_learning.Views
+{
+   public sealed partial class AllNotesPage : Page
+   {
+        public AllNotesModel allNotesModel = new AllNotesModel();
+
+        public AllNotesPage()
+        {
+            InitializeComponent();
+        }
+   }
+}

winui-learning/winui-learning/Views/NotePage.xaml

@@ -19,21 +19,23 @@
             <ColumnDefinition Width="*"/>
         </Grid.ColumnDefinitions>
 
-        <TextBox x:Name="NoteEditor"
+        <TextBox 
-         AcceptsReturn="True"
+            x:Name="NoteEditor"
-         TextWrapping="Wrap"
+            Header="{x:Bind note.Date.ToString()}"
-         PlaceholderText="Enter your note"
+            Text="{x:Bind note.Text, Mode=TwoWay}"
-         Header="New note"
+            AcceptsReturn="True"
-         ScrollViewer.VerticalScrollBarVisibility="Auto"
+            TextWrapping="Wrap"
-         Width="400"
+            PlaceholderText="Enter your note"
-         Grid.Column="1"/>
+            ScrollViewer.VerticalScrollBarVisibility="Auto"
+            Width="400"
+            Grid.Column="1"/>
 
         <StackPanel Orientation="Horizontal"
             HorizontalAlignment="Right"
             Spacing="4"
             Grid.Row="1" Grid.Column="1">
-            <Button Content="Save" Style="{StaticResource AccentButtonStyle}" Click="Save"/>
+            <Button Content="Save" Style="{StaticResource AccentButtonStyle}" Click="ButtonClick_Save"/>
-            <Button Content="Delete" Click="Delete"/>
+            <Button Content="Delete" Click="ButtonClick_Delete"/>
         </StackPanel>
     </Grid>
 </Page>

winui-learning/winui-learning/Views/NotePage.xaml.cs

@@ -1,19 +1,6 @@
 using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Controls;
-using Microsoft.UI.Xaml.Controls.Primitives;
+using winui_learning.Models;
-using Microsoft.UI.Xaml.Data;
-using Microsoft.UI.Xaml.Input;
-using Microsoft.UI.Xaml.Media;
-using Microsoft.UI.Xaml.Navigation;
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Runtime.InteropServices.WindowsRuntime;
-using System.Threading.Tasks;
-using Windows.Foundation;
-using Windows.Foundation.Collections;
-using Windows.Storage;
 
 // To learn more about WinUI, the WinUI project structure,
 // and more about our project templates, see: http://aka.ms/winui-project-info.
@@ -25,42 +12,26 @@ namespace winui_learning.Views
     /// </summary>
     public sealed partial class NotePage : Page
     {
-        private StorageFolder storageFolder = ApplicationData.Current.LocalFolder;
+        private NoteModel? note;
-        private StorageFile? noteFile = null;
-        private string fileName = "note.txt";
 
         public NotePage()
         {
             InitializeComponent();
-            Loaded += NotePage_Loaded;
         }
 
-        private async void NotePage_Loaded(object sender, RoutedEventArgs e)
+        private async void ButtonClick_Save(object sender, RoutedEventArgs e)
         {
-            noteFile = (StorageFile)await storageFolder.TryGetItemAsync(fileName);
+            if (note is not null)
-            
-            if (noteFile is not null)
             {
-                NoteEditor.Text = await FileIO.ReadTextAsync(noteFile);
+                await note.SaveAsync();
             }
         }
 
-        private async void Save(object sender, RoutedEventArgs e)
+        private async void ButtonClick_Delete(object sender, RoutedEventArgs e)
         {
-            if (noteFile is null)
+            if (note is not null)
             {
-                noteFile = await storageFolder.CreateFileAsync(fileName, CreationCollisionOption.ReplaceExisting);
+                await note.DeleteAsync();
-            }
-            await FileIO.WriteTextAsync(noteFile, NoteEditor.Text);
-        }
-
-        private async void Delete(object sender, RoutedEventArgs e)
-        {
-            if (noteFile is not null)
-            {
-                await noteFile.DeleteAsync();
-                noteFile = null;
-                NoteEditor.Text = string.Empty;
             }
         }
     }

winui-learning/winui-learning/winui-learning.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
     <TargetFramework>net8.0-windows10.0.19041.0</TargetFramework>
@@ -50,7 +50,9 @@
     </Page>
   </ItemGroup>
   <ItemGroup>
-    <Folder Include="Views\" />
+    <Page Update="Views\AllNotesPage.xaml">
+      <Generator>MSBuild:Compile</Generator>
+    </Page>
   </ItemGroup>
 
   <!--