csharp: MVVM parts support

Summary:
Parts binding will follow a similar approach to regular property
binding:

`var error = factory.PartName().PropertyName().Bind(modelProperty);`

* Changed both `Bind()` overloads to return the error code from
  `efl_ui_property_bind`
* Also properties from interfaces implemented didn't have their `Bindable`
  wrapper methds available.

Depends on D9563

Reviewers: felipealmeida, cedric, SanghyeonLee, woohyun

Reviewed By: cedric

Tags: #efl

Differential Revision: https://phab.enlightenment.org/D9564

1 files changed, 13 insertions, 0 deletions

diff --git a/src/tests/efl_mono/Parts.cs b/src/tests/efl_mono/Parts.cs
index 3de0b6c94b..00a67bae56 100644
--- a/src/tests/efl_mono/Parts.cs
+++ b/src/tests/efl_mono/Parts.cs
@@ -39,6 +39,19 @@ public static class TestParts
     }
 }
 
+public static class TestMVVMParts
+{
+    public static void mvvm_dynamic_parts()
+    {
+        var factory = new Efl.Ui.ItemFactory<Efl.Ui.ListDefaultItem>();
+
+        var bindablePart = factory.TextPart();
+        var error = bindablePart.Markup().Bind("name");
+
+        Test.AssertEquals(error, Eina.Error.NO_ERROR);
+    }
+}
+
 #endif
 
 }