Setup Samples base

.vscode/launch.json

@@ -0,0 +1,57 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": ".NET Core Launch (console)",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build",
+            "program": "BuildOutput/Samples/Samples.dll",
+            "args": [],
+            "cwd": "${workspaceFolder}",
+            "console": "internalConsole",
+            "stopAtEntry": false,
+            "internalConsoleOptions": "openOnSessionStart"
+        },
+        {
+            "name": ".NET Core Launch (web)",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build",
+            "program": "${workspaceFolder}/bin/Debug/<insert-target-framework-here>/<insert-project-name-here>.dll",
+            "args": [],
+            "cwd": "${workspaceFolder}",
+            "stopAtEntry": false,
+            "internalConsoleOptions": "openOnSessionStart",
+            "launchBrowser": {
+                "enabled": true,
+                "args": "${auto-detect-url}",
+                "windows": {
+                    "command": "cmd.exe",
+                    "args": "/C start ${auto-detect-url}"
+                },
+                "osx": {
+                    "command": "open"
+                },
+                "linux": {
+                    "command": "xdg-open"
+                }
+            },
+            "env": {
+                "ASPNETCORE_ENVIRONMENT": "Development"
+            },
+            "sourceFileMap": {
+                "/Views": "${workspaceFolder}/Views"
+            }
+        },
+        {
+            "name": ".NET Core Attach",
+            "type": "coreclr",
+            "request": "attach",
+            "processId": "${command:pickProcess}"
+        }
+    ]
+}

.vscode/settings.json

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+{
+    "files.exclude": {
+        "**/obj/": true
+    }
+}

.vscode/tasks.json

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+{
+    // See https://go.microsoft.com/fwlink/?LinkId=733558
+    // for the documentation about the tasks.json format
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build",
+            "command": "dotnet build Source/Samples/Samples.csproj",
+            "type": "shell",
+            "group": "build",
+            "presentation": {
+                "reveal": "silent"
+            },
+            "problemMatcher": "$msCompile"
+        }
+    ]
+}

Source/Samples/Category.cs

@@ -0,0 +1,9 @@
+
+namespace Samples
+{
+    enum Category
+    {
+        Widgets,
+        Dialogs
+    }
+}

Source/Samples/MainWindow.cs

@@ -1,37 +1,116 @@
-using System;
 using Gtk;
-using UI = Gtk.Builder.ObjectAttribute;
+using System;
+using System.Collections.Generic;
 
 namespace Samples
 {
     class MainWindow : Window
     {
-#pragma warning disable 0649
-        [UI] private Label _label1;
-        [UI] private Button _button1;
-#pragma warning restore 0649
+        private HeaderBar _headerBar;
+        private HPaned _panned;
+        private TreeView _treeView;
+        private Box _boxContent;
+        private TreeStore _store;
+        private Dictionary<string, (Type type, Widget widget)> _items;
 
-        private int _counter;
-
-        public MainWindow() : this(new Builder("MainWindow.glade")) { }
-
-        private MainWindow(Builder builder) : base(builder.GetObject("MainWindow").Handle)
+        public MainWindow() : base(WindowType.Toplevel)
         {
-            builder.Autoconnect(this);
-            
-            DeleteEvent += Window_DeleteEvent;
-            _button1.Clicked += Button1_Clicked;
+            // Setup GUI
+            WindowPosition = WindowPosition.Center;
+            DefaultSize = new Gdk.Size(800, 600);
+
+            _headerBar = new HeaderBar();
+            _headerBar.ShowCloseButton = true;
+            _headerBar.Title = "GtkSharp Sample Application";
+
+            var btnClickMe = new Button();
+            btnClickMe.AlwaysShowImage = true;
+            btnClickMe.Image = Image.NewFromIconName("document-new-symbolic", IconSize.Button);
+            _headerBar.PackStart(btnClickMe);
+
+            Titlebar = _headerBar;
+
+            _panned = new HPaned();
+            _panned.Position = 200;
+
+            _treeView = new TreeView();
+            _treeView.HeadersVisible = false;
+            _panned.Pack1(_treeView, false, true);
+
+            _boxContent = new Box(Orientation.Vertical, 0);
+            _panned.Pack2(_boxContent, true, true);
+
+            Child = _panned;
+
+            // Fill up data
+            FillUpTreeView();
+
+            // Connect events
+            _treeView.Selection.Changed += Selection_Changed;
+            Destroyed += (sender, e) => Application.Quit();
         }
 
-        private void Window_DeleteEvent(object sender, DeleteEventArgs a)
+        private void Selection_Changed(object sender, EventArgs e)
         {
-            Application.Quit();
+            if (_treeView.Selection.GetSelected(out TreeIter iter))
+            {
+                var s = _store.GetValue(iter, 0).ToString();
+
+                while (_boxContent.Children.Length > 0)
+                    _boxContent.Remove(_boxContent.Children[0]);
+
+                if (_items.TryGetValue(s, out var item))
+                {
+                    if (item.widget == null)
+                        _items[s] = item = (item.type, Activator.CreateInstance(item.type) as Widget);
+                    
+                    _boxContent.PackStart(item.widget, true, true, 0);
+                    _boxContent.ShowAll();
+                }
+
+            }
         }
 
-        private void Button1_Clicked(object sender, EventArgs a)
+        private void FillUpTreeView()
         {
-            _counter++;
-            _label1.Text = "Hello World! This button has been clicked " + _counter + " time(s).";
+            // Init cells
+            var cellName = new CellRendererText();
+
+            // Init columns
+            var columeSections = new TreeViewColumn();
+            columeSections.Title = "Sections";
+            columeSections.PackStart(cellName, true);
+
+            columeSections.AddAttribute(cellName, "text", 0);
+
+            _treeView.AppendColumn(columeSections);
+
+            // Init treeview
+            _store = new TreeStore(typeof(string));
+            _treeView.Model = _store;
+
+            // Setup category base
+            var dict = new Dictionary<Category, TreeIter>();
+            foreach (var category in Enum.GetValues(typeof(Category)))
+                dict[(Category)category] = _store.AppendValues(category.ToString());
+
+            // Fill up categories
+            _items = new Dictionary<string, (Type type, Widget widget)>();
+            var maintype = typeof(SectionAttribute);
+
+            foreach (var type in maintype.Assembly.GetTypes())
+            {
+                foreach (var attribute in type.GetCustomAttributes(true))
+                {
+                    if (attribute is SectionAttribute a)
+                    {
+                        _store.AppendValues(dict[a.Category], a.Name);
+                        _items[a.Name] = (type, null);
+                    }
+                }
+            }
+
+            _treeView.ExpandAll();
         }
     }
-}
+}

Source/Samples/MainWindow.glade

@@ -1,46 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<interface>
-  <requires lib="gtk+" version="3.18"/>
-  <object class="GtkWindow" id="MainWindow">
-    <property name="can_focus">False</property>
-    <property name="title" translatable="yes">Example Window</property>
-    <property name="default_width">480</property>
-    <property name="default_height">240</property>
-    <child>
-      <object class="GtkBox">
-        <property name="visible">True</property>
-        <property name="can_focus">False</property>
-        <property name="margin_left">4</property>
-        <property name="margin_right">4</property>
-        <property name="margin_top">4</property>
-        <property name="margin_bottom">4</property>
-        <property name="orientation">vertical</property>
-        <child>
-          <object class="GtkLabel" id="_label1">
-            <property name="visible">True</property>
-            <property name="can_focus">False</property>
-            <property name="label" translatable="yes">Hello World!</property>
-          </object>
-          <packing>
-            <property name="expand">True</property>
-            <property name="fill">True</property>
-            <property name="position">0</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="_button1">
-            <property name="label" translatable="yes">Click me!</property>
-            <property name="visible">True</property>
-            <property name="can_focus">False</property>
-            <property name="receives_default">True</property>
-          </object>
-          <packing>
-            <property name="expand">False</property>
-            <property name="fill">True</property>
-            <property name="position">1</property>
-          </packing>
-        </child>
-      </object>
-    </child>
-  </object>
-</interface>

Source/Samples/Program.cs

@@ -5,19 +5,67 @@ namespace Samples
 {
     class Program
     {
+        public static Application App;
+
+        public static Window Win;
+
         [STAThread]
         public static void Main(string[] args)
         {
             Application.Init();
 
-            var app = new Application("org.Samples.Samples", GLib.ApplicationFlags.None);
-            app.Register(GLib.Cancellable.Current);
+            App = new Application("org.Samples.Samples", GLib.ApplicationFlags.None);
+            App.Register(GLib.Cancellable.Current);
 
-            var win = new MainWindow();
-            app.AddWindow(win);
+            Win = new MainWindow();
+            App.AddWindow(Win);
 
-            win.Show();
+            var menu = new GLib.Menu();
+            menu.AppendItem(new GLib.MenuItem("Help", "app.help"));
+            menu.AppendItem(new GLib.MenuItem("About", "app.about"));
+            menu.AppendItem(new GLib.MenuItem("Quit", "app.quit"));
+            App.AppMenu = menu;
+
+            var helpAction = new GLib.SimpleAction("help", null);
+            helpAction.Activated += HelpActivated;
+            App.AddAction(helpAction);
+
+            var aboutAction = new GLib.SimpleAction("about", null);
+            aboutAction.Activated += AboutActivated;
+            App.AddAction(aboutAction);
+
+            var quitAction = new GLib.SimpleAction("quit", null);
+            quitAction.Activated += QuitActivated;
+            App.AddAction(quitAction);
+
+            Win.ShowAll();
             Application.Run();
         }
+
+        private static void HelpActivated(object sender, EventArgs e)
+        {
+
+        }
+
+        private static void AboutActivated(object sender, EventArgs e)
+        {
+            var dialog = new AboutDialog();
+            dialog.TransientFor = Win;
+            dialog.ProgramName = "GtkSharp Sample Application";
+            dialog.Version = "1.0.0.0";
+            dialog.Comments = "A sample application for the GtkSharp project.";
+            dialog.LogoIconName = "system-run-symbolic";
+            dialog.License = "This sample application is licensed under public domain.";
+            dialog.Website = "https://www.github.com/GtkSharp/GtkSharp";
+            dialog.WebsiteLabel = "GtkSharp Website";
+
+            dialog.Run();
+            dialog.Hide();
+        }
+
+        private static void QuitActivated(object sender, EventArgs e)
+        {
+            Application.Quit();
+        }
     }
 }

Source/Samples/SectionAttribute.cs

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+using System;
+
+namespace Samples
+{
+    class SectionAttribute : Attribute
+    {
+        public string Name { get; set; }
+
+        public Category Category { get; set; }
+    }
+}

Source/Samples/Sections/Dialogs/AboutDialogCategory.cs

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+using System;
+using Gtk;
+
+namespace Samples
+{
+    [SectionAttribute(Name = "AboutDialog", Category = Category.Dialogs)]
+    class AboutDialogCategory : Box
+    {
+        public AboutDialogCategory() : base(Orientation.Vertical, 0)
+        {
+
+        }
+    }
+}

Source/Samples/Sections/Widgets/ButtonCategory.cs

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+using System;
+using Gtk;
+
+namespace Samples
+{
+    [SectionAttribute(Name = "Button", Category = Category.Widgets)]
+    class ButtonCategory : Box
+    {
+        public ButtonCategory() : base(Orientation.Vertical, 0)
+        {
+            var btn = new Button("Click Me");
+            PackStart(btn, true, true, 0);
+        }
+    }
+}