elementary: add Efl.Ui.Grid_View by leveraging MVVM and Collection/Position_Manager infrastructure.

Co-authored-by: Marcel Hollerbach <mail@marcel-hollerbach.de>

Differential Revision: https://phab.enlightenment.org/D9960

src/lib/elementary/Efl_Ui.h

@@ -335,6 +335,7 @@ typedef Eo Efl_Ui_Spotlight_Indicator;
 # include <efl_ui_view_model.eo.h>
 # include <efl_ui_collection_view.eo.h>
 # include <efl_ui_list_view.eo.h>
+# include <efl_ui_grid_view.eo.h>
 
 # include <efl_ui_scroller.eo.h>
 # include <efl_ui_pan.eo.h>

src/lib/elementary/efl_ui_collection_view.eo

@@ -11,7 +11,7 @@ class @beta Efl.Ui.Collection_View extends Efl.Ui.Layout_Base implements
      object. By using different @.position_manager objects this widget can show unidimensional lists or
      two-dimensional grids of items, for example.
 
-     This class is intended to act as a base for widgets like List_View or Grid_View,
+     This class is intended to act as a base for widgets like List_View or @Efl.Ui.Grid_View,
      which hide this complexity from the user.
 
      Items are generated by the @Efl.Ui.Factory defined with .factory.set to match the content of the

src/lib/elementary/efl_ui_grid_view.c

@@ -0,0 +1,26 @@
+#ifdef HAVE_CONFIG_H
+#include "elementary_config.h"
+#endif
+
+#define ELM_LAYOUT_PROTECTED
+#define EFL_UI_SCROLL_MANAGER_PROTECTED
+#define EFL_UI_SCROLLBAR_PROTECTED
+
+#include <Efl_Ui.h>
+
+#define MY_CLASS      EFL_UI_GRID_VIEW_CLASS
+#define MY_CLASS_PFX  efl_ui_grid_view
+
+#define MY_CLASS_NAME "Efl.Ui.Grid_View"
+
+EOLIAN static Eo *
+_efl_ui_grid_view_efl_object_constructor(Eo *obj, void *pd EINA_UNUSED)
+{
+   obj = efl_constructor(efl_super(obj, MY_CLASS));
+
+   efl_ui_collection_view_position_manager_set(obj, efl_new(EFL_UI_POSITION_MANAGER_GRID_CLASS));
+
+   return obj;
+}
+
+#include "efl_ui_grid_view.eo.c"

src/lib/elementary/efl_ui_grid_view.eo

@@ -0,0 +1,17 @@
+class @beta Efl.Ui.Grid_View extends Efl.Ui.Collection_View
+{
+   [[A scrollable grid of @Efl.Ui.Item objects, typically @Efl.Ui.Grid_Default_Item objects.
+
+     Items are added asynchronously by an @Efl.Ui.Factory from the definition of an @Efl.Model.
+
+     The orientation (vertical or horizontal) of the grid can be set with
+     @Efl.Ui.Layout_Orientable.orientation.
+
+     Items inside this widget can be selected according to the @Efl.Ui.Multi_Selectable_Async.select_mode
+     policy, and the selection can be retrieved with @Efl.Ui.Multi_Selectable_Async.selected_iterator_new.
+   ]]
+   data: null;
+   implements {
+      Efl.Object.constructor;
+   }
+}

src/lib/elementary/meson.build

@@ -186,6 +186,7 @@ pub_eo_files = [
   'efl_ui_view_model.eo',
   'efl_ui_collection_view.eo',
   'efl_ui_collection_view_focus_manager.eo',
+  'efl_ui_grid_view.eo',
 ]
 
 foreach eo_file : pub_eo_files
@@ -899,6 +900,7 @@ elementary_src = [
   'efl_ui_grid_default_item.c',
   'efl_ui_grid.c',
   'efl_ui_list_view.c',
+  'efl_ui_grid_view.c',
   'efl_ui_layout_factory.c',
   'efl_ui_scroller.c',
   'efl_ui_scroll_manager.c',