efl-mono: Add custom widget example

2 files changed, 69 insertions, 0 deletions

diff --git a/reference/csharp/ui/src/meson.build b/reference/csharp/ui/src/meson.build
index 12a5ef33..bfe5e9a9 100644
--- a/reference/csharp/ui/src/meson.build
+++ b/reference/csharp/ui/src/meson.build
@@ -20,3 +20,10 @@ executable('efl_reference_ui_focus',
   cs_args : efl_mono_libs,
   install : true
 )
+
+executable('efl_reference_ui_custom_widget',
+  files(['ui_custom_widget.cs']),
+  dependencies : deps,
+  cs_args : efl_mono_libs,
+  install : true
+)
diff --git a/reference/csharp/ui/src/ui_custom_widget.cs b/reference/csharp/ui/src/ui_custom_widget.cs
new file mode 100644
index 00000000..c486be6a
--- /dev/null
+++ b/reference/csharp/ui/src/ui_custom_widget.cs
@@ -0,0 +1,62 @@
+/*
+ * Efl.UI custom widget examples.
+ *
+ * Inherit from an EFL C# class and customize it
+ */
+
+using System;
+
+// This is our own button with customized text functions
+public class MyButton : Efl.Ui.Button
+{
+    // This id shows how our data is preserved when overriden methods
+    // are called from native code
+    private int button_id;
+
+    // Constructor sets an initial text
+    public MyButton(Efl.Object parent, int id = 0) :
+        base(parent)
+    {
+        button_id = id;
+        base.SetText("Base text for button id " + id);
+    }
+
+    // This calls the parent's SetText() method with a modified string
+    public override void SetText(System.String text)
+    {
+        base.SetText("Overriden text for button id " + button_id + ": " + text);
+    }
+}
+
+public class Example : Efl.Csharp.Application
+{
+    protected override void OnInitialize(Eina.Array<System.String> args)
+    {
+        // Create a window and initialize it
+        Efl.Ui.Win win = new Efl.Ui.Win(null, winType: Efl.Ui.WinType.Basic);
+        win.SetText("Custom widget demo");
+        win.SetAutohide(true);
+        win.VisibilityChangedEvt += (object sender, Efl.Gfx.IEntityVisibilityChangedEvt_Args e) => {
+          // Exit the EFL main loop when the window is closed
+          if (e.arg == false)
+              Efl.Ui.Config.Exit();
+        };
+        // Give the window an initial size
+        win.SetSize(new Eina.Size2D(350,250));
+
+        // Instantiate our custom button widget
+        MyButton btn = new MyButton(win, 99);
+        btn.ClickedEvt += (object sender, Efl.Ui.IClickableClickedEvt_Args e) => {
+          // When the button is clicked, change its text
+          MyButton b = (MyButton)sender;
+          b.SetText("Hello!");
+        };
+
+        win.SetContent(btn);
+    }
+    public static void Main()
+    {
+        var example = new Example();
+        example.Launch();
+    }
+}