Added different startup screen and ability to open and save project into files

Examples/Nodify.Calculator/App.xaml

@@ -2,7 +2,7 @@
              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:nodify="https://miroiu.github.io/nodify"
-             StartupUri="MainWindow.xaml">
+             StartupUri="StartupWindow.xaml">
     <Application.Resources>
         <ResourceDictionary>
             <ResourceDictionary.MergedDictionaries>

Examples/Nodify.Calculator/LiteDBHelper.cs

@@ -6,17 +6,16 @@ using System.Linq.Expressions;
 
 public class LiteDbHelper<T> : IDisposable where T : class
 {
-    private string dbPath = @"MyData.db";
     private readonly LiteDatabase _database;
     private readonly ILiteCollection<T> _collection;
 
     /// <summary>
     /// Initializes a new instance of the LiteDbHelper class.
     /// </summary>
-    /// <param name="databasePath">The path to the LiteDB database file.</param>
     /// <param name="collectionName">The name of the collection to work with.</param>
     public LiteDbHelper(string collectionName)
     {
+        var dbPath = Nodify.Calculator.ProjectManager.DatabasePath;
         _database = new LiteDatabase(dbPath);
         _collection = _database.GetCollection<T>(collectionName);
     }

Examples/Nodify.Calculator/MainWindow.xaml

@@ -71,7 +71,7 @@
         </shared:TabControlEx>
 
         <Expander Header="Click to hide/show"
-                  IsExpanded="True"
+                  IsExpanded="False"
                   Margin="10"
                   HorizontalAlignment="Left"
                   VerticalAlignment="Bottom">

Examples/Nodify.Calculator/NewProjectDialog.xaml

@@ -0,0 +1,48 @@
+<Window x:Class="Nodify.Calculator.NewProjectDialog"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        Title="New Project"
+        Width="450"
+        Height="250"
+        WindowStartupLocation="CenterOwner"
+        ResizeMode="NoResize"
+        Background="#2D2D30"
+        Foreground="White">
+    <Grid Margin="20">
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="*" />
+            <RowDefinition Height="Auto" />
+        </Grid.RowDefinitions>
+
+        <TextBlock Text="Project Name:" Grid.Row="0" Margin="0 0 0 4" />
+        <TextBox x:Name="ProjectNameBox" Grid.Row="1" Margin="0 0 0 14"
+                 Background="#3E3E42" Foreground="White" Padding="6" FontSize="14" />
+
+        <TextBlock Text="Location:" Grid.Row="2" Margin="0 0 0 4" />
+        <Grid Grid.Row="3" Margin="0 0 0 14">
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="*" />
+                <ColumnDefinition Width="Auto" />
+            </Grid.ColumnDefinitions>
+            <TextBox x:Name="LocationBox" Grid.Column="0"
+                     Background="#3E3E42" Foreground="White" Padding="6" FontSize="14"
+                     IsReadOnly="True" />
+            <Button Content="Browse..." Grid.Column="1" Margin="8 0 0 0"
+                    Padding="12 4" Click="Browse_Click"
+                    Background="#3E3E42" Foreground="White" Cursor="Hand" />
+        </Grid>
+
+        <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" Grid.Row="5">
+            <Button Content="Create" Width="90" Margin="0 0 10 0" Padding="6"
+                    Click="Create_Click" IsDefault="True"
+                    Background="#6366f1" Foreground="White" Cursor="Hand" />
+            <Button Content="Cancel" Width="90" Padding="6"
+                    Click="Cancel_Click" IsCancel="True"
+                    Background="#3E3E42" Foreground="White" Cursor="Hand" />
+        </StackPanel>
+    </Grid>
+</Window>

Examples/Nodify.Calculator/NewProjectDialog.xaml.cs

@@ -0,0 +1,56 @@
+using System.IO;
+using System.Windows;
+using System.Windows.Forms;
+using MessageBox = System.Windows.MessageBox;
+
+namespace Nodify.Calculator
+{
+    public partial class NewProjectDialog : Window
+    {
+        public string ProjectName { get; private set; } = string.Empty;
+        public string ProjectDirectory { get; private set; } = string.Empty;
+
+        public NewProjectDialog()
+        {
+            InitializeComponent();
+        }
+
+        private void Browse_Click(object sender, RoutedEventArgs e)
+        {
+            using var dialog = new FolderBrowserDialog
+            {
+                Description = "Select project location",
+                UseDescriptionForTitle = true
+            };
+
+            if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
+            {
+                LocationBox.Text = dialog.SelectedPath;
+            }
+        }
+
+        private void Create_Click(object sender, RoutedEventArgs e)
+        {
+            if (string.IsNullOrWhiteSpace(ProjectNameBox.Text))
+            {
+                MessageBox.Show("Please enter a project name.", "Validation", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            if (string.IsNullOrWhiteSpace(LocationBox.Text))
+            {
+                MessageBox.Show("Please select a project location.", "Validation", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
+            ProjectName = ProjectNameBox.Text.Trim();
+            ProjectDirectory = Path.Combine(LocationBox.Text, ProjectName);
+            DialogResult = true;
+        }
+
+        private void Cancel_Click(object sender, RoutedEventArgs e)
+        {
+            DialogResult = false;
+        }
+    }
+}

Examples/Nodify.Calculator/Nodify.Calculator.csproj

@@ -4,6 +4,7 @@
     <OutputType>WinExe</OutputType>
     <TargetFrameworks>net9-windows;</TargetFrameworks>
     <UseWPF>true</UseWPF>
+    <UseWindowsForms>true</UseWindowsForms>
     <Nullable>enable</Nullable>
   </PropertyGroup>
   <ItemGroup>

Examples/Nodify.Calculator/OperationsMenuViewModel.cs

@@ -148,7 +148,7 @@ namespace Nodify.Calculator
             }
 
             operations.AddRange(OperationFactory.GetSystemNodes());
-            operations.AddRange(OperationFactory.GetOperationsInfo(typeof(OperationsContainer)));
+            //operations.AddRange(OperationFactory.GetOperationsInfo(typeof(OperationsContainer)));
 
             SwaggerOperations = new NodifyObservableCollection<OperationInfoViewModel>();
             LoadSwaggerNodesFromDb();

Examples/Nodify.Calculator/ProjectManager.cs

@@ -0,0 +1,36 @@
+using System.IO;
+
+namespace Nodify.Calculator
+{
+    public static class ProjectManager
+    {
+        public const string ProjectExtension = ".avep";
+        public const string ProjectFilter = "API Visual Executor Project (*.avep)|*.avep";
+
+        public static string ProjectName { get; private set; } = string.Empty;
+        public static string ProjectDirectory { get; private set; } = string.Empty;
+        public static string ProjectFilePath { get; private set; } = string.Empty;
+        public static string DatabasePath { get; private set; } = "MyData.db";
+
+        public static void CreateProject(string name, string directory)
+        {
+            ProjectName = name;
+            ProjectDirectory = directory;
+            ProjectFilePath = Path.Combine(directory, name + ProjectExtension);
+            DatabasePath = Path.Combine(directory, name + ".db");
+
+            Directory.CreateDirectory(directory);
+
+            // Write a simple project file
+            File.WriteAllText(ProjectFilePath, $"{{\"name\":\"{name}\"}}");
+        }
+
+        public static void OpenProject(string projectFilePath)
+        {
+            ProjectFilePath = projectFilePath;
+            ProjectDirectory = Path.GetDirectoryName(projectFilePath)!;
+            ProjectName = Path.GetFileNameWithoutExtension(projectFilePath);
+            DatabasePath = Path.Combine(ProjectDirectory, ProjectName + ".db");
+        }
+    }
+}

Examples/Nodify.Calculator/StartupWindow.xaml

@@ -0,0 +1,39 @@
+<Window x:Class="Nodify.Calculator.StartupWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        Title="API Visual Executor"
+        Width="500"
+        Height="380"
+        WindowStartupLocation="CenterScreen"
+        ResizeMode="NoResize"
+        Background="#1E1E1E"
+        Foreground="White">
+    <Grid>
+        <StackPanel VerticalAlignment="Center" HorizontalAlignment="Center" Width="360">
+            <TextBlock Text="API Visual Executor"
+                       FontSize="26" FontWeight="Bold"
+                       Foreground="#6366f1"
+                       HorizontalAlignment="Center"
+                       Margin="0 0 0 8" />
+            <TextBlock Text="Create or open a project to get started"
+                       FontSize="13" Foreground="Gray"
+                       HorizontalAlignment="Center"
+                       Margin="0 0 0 30" />
+
+            <Button Content="➕  New Project"
+                    Height="48" FontSize="16"
+                    Margin="0 0 0 14"
+                    Background="#6366f1" Foreground="White"
+                    BorderThickness="0" Cursor="Hand"
+                    Click="NewProject_Click" />
+
+            <Button Content="📂  Open Project"
+                    Height="48" FontSize="16"
+                    Margin="0 0 0 14"
+                    Background="#3E3E42" Foreground="White"
+                    BorderThickness="1" BorderBrush="#555"
+                    Cursor="Hand"
+                    Click="OpenProject_Click" />
+        </StackPanel>
+    </Grid>
+</Window>

Examples/Nodify.Calculator/StartupWindow.xaml.cs

@@ -0,0 +1,50 @@
+using Microsoft.Win32;
+using System.IO;
+using System.Windows;
+
+namespace Nodify.Calculator
+{
+    public partial class StartupWindow : Window
+    {
+        public StartupWindow()
+        {
+            InitializeComponent();
+        }
+
+        private void NewProject_Click(object sender, RoutedEventArgs e)
+        {
+            var dialog = new NewProjectDialog();
+            dialog.Owner = this;
+            if (dialog.ShowDialog() != true)
+                return;
+
+            ProjectManager.CreateProject(dialog.ProjectName, dialog.ProjectDirectory);
+            OpenMainWindow();
+        }
+
+        private void OpenProject_Click(object sender, RoutedEventArgs e)
+        {
+            var ofd = new OpenFileDialog
+            {
+                Title = "Open Project",
+                Filter = ProjectManager.ProjectFilter,
+                DefaultExt = ProjectManager.ProjectExtension
+            };
+
+            if (ofd.ShowDialog() != true)
+                return;
+
+            ProjectManager.OpenProject(ofd.FileName);
+            OpenMainWindow();
+        }
+
+        private void OpenMainWindow()
+        {
+            var mainWindow = new MainWindow();
+            mainWindow.Title = $"API Visual Executor — {ProjectManager.ProjectName}";
+            Application.Current.MainWindow = mainWindow;
+            mainWindow.Show();
+            Close();
+        }
+    }
+}