ecore_evas: Introduce cnp / dnd API for ecore evas

The idea of copy and paste here is:
- The user specifies the content he wants to have in the selection
  buffer with a Eina_Content, these content pointer ownerships are
  passed to the called. Internally ecore_evas code will memorieze the
  pointer, and pass on function callbacks to the modules, which then do
  not have to deal with the ownership.

- In case the module does not specify these APIs, the callback
  implementation will be called, which only works for cnp *not* dnd.

- Action and mime types are handled as strings, which allows way better
  custom organisations.

(The docs needs improvement)

Reviewed-by: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Differential Revision: https://phab.enlightenment.org/D11192

17 files changed, 1120 insertions, 47 deletions

diff --git a/src/lib/ecore_evas/Ecore_Evas.h b/src/lib/ecore_evas/Ecore_Evas.h
index d59900d788..ddc3622741 100644
--- a/src/lib/ecore_evas/Ecore_Evas.h
+++ b/src/lib/ecore_evas/Ecore_Evas.h
@@ -3669,6 +3669,219 @@ EAPI unsigned long ecore_evas_pixmap_colormap_get(const Ecore_Evas *ee);
  */
 EAPI int ecore_evas_pixmap_depth_get(const Ecore_Evas *ee);
 
+typedef enum {
+   ECORE_EVAS_SELECTION_BUFFER_SELECTION_BUFFER = 0,      /**< Stores selected / highlighted selection */
+   ECORE_EVAS_SELECTION_BUFFER_COPY_AND_PASTE_BUFFER = 1, /**< Stores copied things (Ctrl + C) */
+   ECORE_EVAS_SELECTION_BUFFER_DRAG_AND_DROP_BUFFER = 2,  /**< Stores dragged things while drag and drop is happening. */
+   ECORE_EVAS_SELECTION_BUFFER_LAST = 3,
+} Ecore_Evas_Selection_Buffer;
+
+/**
+ * @brief Callback called when the content of one of the selection buffers changes.
+ *
+ * @param[in] ee The Ecore_Evas that handles this selection.
+ * @param[in] selection The selection buffer that has changed.
+ */
+typedef void (*Ecore_Evas_Selection_Changed_Cb)(Ecore_Evas *ee, unsigned int seat, Ecore_Evas_Selection_Buffer selection);
+
+/**
+ * @brief Sets a callback for Ecore_Evas to be called when a selection buffer changes.
+ *
+ * @param[in] ee The Ecore_Evas to set the callback on.
+ * @param[in] cb The function to call.
+ *
+ * A call to this function will set a callback on an Ecore_Evas, causing
+ * @p func to be called whenever @p ee selections change.
+ * Only one such callback can exist for each Ecore_Evas. Calling this method multiple
+ * times overwrites previous functions. Use a NULL @p func to stop being notified.
+ *
+ * You will not be notified about selection changes caused by yourself. (TODO: bu5hm4n?)
+ *
+ * @warning If and when this function is called depends on the underlying
+ * windowing system.
+ */
+EAPI void ecore_evas_callback_selection_changed_set(Ecore_Evas *ee, Ecore_Evas_Selection_Changed_Cb cb);
+
+/**
+ * @brief Sets the content of the specified selection buffer.
+ *
+ * @param[in] ee The Ecore_Evas to set the selection buffer on.
+ * @param[in] buffer The selection buffer to set.
+ * @param[in] content Content to set to the selection buffer. The Eina_Content specifies the MIME type of the data.
+ * Ownership of the content is transferred.
+ *
+ * @note Only ECORE_EVAS_SELECTION_BUFFER_SELECTION_BUFFER and ECORE_EVAS_SELECTION_BUFFER_COPY_AND_PASTE_BUFFER
+ * buffers can be set. Drag and drop operations use a different set of methods.
+ */
+EAPI Eina_Bool ecore_evas_selection_set(Ecore_Evas *ee, unsigned int seat, Ecore_Evas_Selection_Buffer buffer, Eina_Content *content);
+
+/**
+ * @brief Checks if the specified selection buffer has content.
+ *
+ * @param[in] ee The ecore evas to query
+ * @param[in] buffer Which selection buffer to ask
+ *
+ * @return EINA_TRUE if there is an available selection for the specified buffer.
+ *
+ * EINA_TRUE is also returned when the selection is in the window associated with @p ee
+ *
+ * @note Due to the asynchronous nature of selection buffers, this method might not return
+ * the right result when invoked from the selection callback set with ecore_evas_callback_selection_changed_set.
+ */
+EAPI Eina_Bool ecore_evas_selection_exists(Ecore_Evas *ee, unsigned int seat, Ecore_Evas_Selection_Buffer buffer);
+
+/**
+ * @brief Retrieves the content of the specified selection buffer.
+ *
+ * @param[in] ee The ecore evas to query.
+ * @param[in] buffer Selection buffer to retrieve.
+ * @param[in] acceptable_types MIME types which are acceptable for the returned Eina_Content.
+ * The iterator contains plain strings (char *). Ownership is transferred for the iterator but not for the strings.
+ * This is convenient for the usual case of a hard-coded array of strings, since the iterator can be generated
+ * on the fly, used and forgotten.
+ *
+ * @return An Eina_Future containing an Eina_Content which has one of the types in @p acceptable_type.
+ * An error is delivered when no matching type is found or when the requested selection buffer is empty.
+ *
+ * This method is time consuming, therefore, it is recommended to verify the existence of a selection
+ * using ecore_evas_selection_exists before calling it.
+ */
+EAPI Eina_Future* ecore_evas_selection_get(Ecore_Evas *ee, unsigned int seat, Ecore_Evas_Selection_Buffer buffer, Eina_Iterator *acceptable_types);
+
+/**
+ * @brief This method is called when the mouse pointer enters or exits the specified window while
+ * performing a drag operation.
+ *
+ * @param[in] ee The Ecore Evas the drag operation started on.
+ * @param[in] p Position (in window coordinates) where the event occurred.
+ * @param[in] inside @c EINA_TRUE if the pointer just entered this window. @c EINA_FALSE if it has just exited.
+ *
+ * Set this callback using ecore_evas_callback_drop_state_changed_set.
+ */
+typedef void (*Ecore_Evas_Drag_Finished)(Ecore_Evas *ee, unsigned int seat, void *data, Eina_Bool accepted);
+
+/**
+ * @brief Starts a new drag operation.
+ *
+ * @param[in] ee The Ecore Evas the drag operation started on.
+ * @param[in] content The content to delivery at the drop site (ownership is transferred).
+ * The Eina_Content has data and its associated MIME type, plus a list of alternate types that can be provided.
+ * @param[in] drag_rep An Ecore_Evas used as a visual representation of the content being dragged.
+ * It must have the same type as @p ee. This is the transparent object dragged along the mouse pointer to indicate that
+ * a drag operation is in progress.
+ * @p terminate_cb will be called when @p drag_rep is not needed anymore and it must be disposed of.
+ * Use @p data to convey @p drag_rep to @p terminate_cb. For example, if @p drag_rep is owned by an Efl_Window, @p data
+ * can point to that window.
+ * @param[in] action Action the target application should perform upon receiving this content. It is entirely up to the
+ * target application to honor (or even understand) this request.
+ * @return @c EINA_TRUE if the drag operation has been successfully started.
+ *
+ * This method must be called when a drag operation is initiated in order to provide the necessary information.
+ */
+EAPI Eina_Bool ecore_evas_drag_start(Ecore_Evas *ee, unsigned int seat, Eina_Content *content, Ecore_Evas *drag_rep, const char* action, Ecore_Evas_Drag_Finished terminate_cb, void *data);
+
+/**
+ * @brief Cancels an ongoing drag operation.
+ *
+ * @param[in] ee The Ecore Evas the drag operation started on.
+ * @return @c EINA_TRUE if the drag operation has been successfully cancelled.
+ *
+ * The initiator of a drag operation can call this method to abort it.
+ */
+EAPI Eina_Bool ecore_evas_drag_cancel(Ecore_Evas *ee, unsigned int seat);
+
+/**
+ * @brief This method is called when the mouse pointer enters or exits the specified window while
+ * performing a drag operation.
+ *
+ * @param[in] ee The Ecore Evas the drag operation started on.
+ * @param[in] p Position (in window coordinates) where the event occurred.
+ * @param[in] inside @c EINA_TRUE if the pointer just entered this window. @c EINA_FALSE if it has just exited.
+ *
+ * Set this callback using ecore_evas_callback_drop_state_changed_set.
+ */
+typedef void (*Ecore_Evas_State_Changed)(Ecore_Evas *ee, unsigned int seat, Eina_Position2D p, Eina_Bool inside);
+
+/**
+ * @brief Sets the method (callback) to call when the mouse pointer enters or exits the specified window while
+ * performing a drag operation.
+ *
+ * @param[in] ee The Ecore Evas the drag operation started on.
+ * @param[in] cb Method to call when the events are received.
+ *
+ * Only one such callback can exist for each Ecore_Evas. Calling this method multiple
+ * times overwrites previous functions. Use a NULL @cb func to stop being notified.
+ */
+EAPI void ecore_evas_callback_drop_state_changed_set(Ecore_Evas *ee, Ecore_Evas_State_Changed cb);
+
+/**
+ * @brief This method is called when the mouse pointer moves over the specified window while
+ * performing a drag operation.
+ *
+ * @param[in] ee The Ecore Evas the drag operation started on.
+ * @param[in] p Position (in window coordinates) where the event occurred.
+ *
+ * Set this callback using ecore_evas_callback_drop_motion_set.
+ */
+
+typedef void (*Ecore_Evas_Motion_Cb)(Ecore_Evas *ee, unsigned int seat, Eina_Position2D p);
+/**
+ * @brief Sets the method (callback) to call when the mouse pointer moves over the specified window while
+ * performing a drag operation.
+ *
+ * @param[in] ee The Ecore Evas the drag operation started on.
+ * @param[in] cb Method to call when the events are received.
+ *
+ * Only one such callback can exist for each Ecore_Evas. Calling this method multiple
+ * times overwrites previous functions. Use a NULL @cb func to stop being notified.
+ */
+EAPI void ecore_evas_callback_drop_motion_set(Ecore_Evas *ee, Ecore_Evas_Motion_Cb cb);
+
+/**
+ * @brief This method is called when the mouse pointer is released over the specified window while
+ * performing a drag operation (thus dropping the dragged content over the window).
+ *
+ * @param[in] ee The Ecore Evas the drag operation started on.
+ * @param[in] p Position (in window coordinates) where the event occurred.
+ *
+ * The dropped data can be retrieved using ecore_evas_selection_get and the
+ * ECORE_EVAS_SELECTION_BUFFER_DRAG_AND_DROP_BUFFER buffer.
+ *
+ * Set this callback using ecore_evas_callback_drop_drop_set.
+ */
+typedef void (*Ecore_Evas_Drop_Cb)(Ecore_Evas *ee, unsigned int seat, Eina_Position2D p, const char *action);
+
+/**
+ * @brief Sets the method (callback) to call when the mouse pointer is released over the specified window while
+ * performing a drag operation (thus dropping the dragged content over the window).
+ *
+ * @param[in] ee The Ecore Evas the drag operation started on.
+ * @param[in] cb Method to call when the events are received.
+ *
+ * Only one such callback can exist for each Ecore_Evas. Calling this method multiple
+ * times overwrites previous functions. Use a NULL @cb func to stop being notified.
+ */
+EAPI void ecore_evas_callback_drop_drop_set(Ecore_Evas *ee, Ecore_Evas_Drop_Cb cb);
+
+// app calls this (from one of the motion cb's, for example) to know the type (and auto conversion) of the thing being dragged.
+// This is the same as calling selection_get and retrieving the types from there (but faster).
+/**
+ * @brief Retrieves the list of types the data currently being dragged can be automatically converted to.
+ *
+ * @param[in] ee The Ecore Evas the drag operation started on.
+ * @return
+ *
+ * This can be used in any of the drag and drop callbacks (Ecore_Evas_State_Changed, Ecore_Evas_Motion_Cb and
+ * Ecore_Evas_Drop_Cb) to check if the data being dragged is acceptable and give the user some early feedback
+ * before the data is actually dropped on the window.
+ *
+ * This is functionally equivalent to calling ecore_evas_selection_get and examining the available types in the
+ * returned Eina_Content, but much faster since the actual data does not have to be asynchronously requested to the
+ * initiator application.
+ */
+EAPI Eina_Accessor* ecore_evas_drop_available_types_get(Ecore_Evas *ee, unsigned int seat);
+
+
 /**
  * @}
  */
@@ -3685,3 +3898,4 @@ EAPI int ecore_evas_pixmap_depth_get(const Ecore_Evas *ee);
 #define EAPI
 
 #endif
+
diff --git a/src/lib/ecore_evas/ecore_evas.c b/src/lib/ecore_evas/ecore_evas.c
index d3c26ddb19..a95f7903d8 100644
--- a/src/lib/ecore_evas/ecore_evas.c
+++ b/src/lib/ecore_evas/ecore_evas.c
@@ -652,6 +652,10 @@ ecore_evas_init(void)
    iface.del = _ecore_evas_animator_del;
    ecore_evas_object_animator_init(&iface);
 
+   ecore_evas_no_matching_type = eina_error_msg_register("No fitting type could be found");
+   ecore_evas_no_selection = eina_error_msg_register("No selection available");
+   ecore_evas_request_replaced = eina_error_msg_register("Selection request replaced");
+
    return _ecore_evas_init_count;
 
  shutdown_ecore:
@@ -2818,7 +2822,7 @@ ecore_evas_shadow_geometry_get(const Ecore_Evas *ee, int *l, int *r, int *t, int
    if (b) *b = ee->shadow.b;
 }
 
-EAPI void 
+EAPI void
 ecore_evas_pointer_xy_get(const Ecore_Evas *ee, Evas_Coord *x, Evas_Coord *y)
 {
    if (x) *x = 0;
@@ -2828,7 +2832,7 @@ ecore_evas_pointer_xy_get(const Ecore_Evas *ee, Evas_Coord *x, Evas_Coord *y)
    IFE;
 }
 
-EAPI Eina_Bool 
+EAPI Eina_Bool
 ecore_evas_pointer_warp(const Ecore_Evas *ee, Evas_Coord x, Evas_Coord y)
 {
    ECORE_EVAS_CHECK(ee, EINA_FALSE);
@@ -2905,7 +2909,7 @@ ecore_evas_pixmap_visual_get(const Ecore_Evas *ee)
    return NULL;
 }
 
-EAPI unsigned long 
+EAPI unsigned long
 ecore_evas_pixmap_colormap_get(const Ecore_Evas *ee)
 {
    ECORE_EVAS_CHECK(ee, 0);
@@ -2932,7 +2936,7 @@ ecore_evas_pixmap_colormap_get(const Ecore_Evas *ee)
    return 0;
 }
 
-EAPI int 
+EAPI int
 ecore_evas_pixmap_depth_get(const Ecore_Evas *ee)
 {
    ECORE_EVAS_CHECK(ee, 0);
@@ -3524,6 +3528,9 @@ _ecore_evas_free(Ecore_Evas *ee)
      free(iface);
 
    ee->engine.ifaces = NULL;
+
+   if (ee->fallback_interface)
+     fallback_selection_shutdown(ee);
    free(ee);
 }
 
@@ -3542,7 +3549,7 @@ _ecore_evas_idle_timeout_update(Ecore_Evas *ee)
 {
    if (ee->engine.idle_flush_timer)
      ecore_timer_del(ee->engine.idle_flush_timer);
-   ee->engine.idle_flush_timer = 
+   ee->engine.idle_flush_timer =
      ecore_timer_loop_add(IDLE_FLUSH_TIME, _ecore_evas_cb_idle_flush, ee);
 }
 
@@ -4007,7 +4014,7 @@ ecore_evas_software_x11_pixmap_new(const char *disp_name, Ecore_X_Window parent,
 
 }
 
-EAPI Ecore_X_Pixmap 
+EAPI Ecore_X_Pixmap
 ecore_evas_software_x11_pixmap_get(const Ecore_Evas *ee)
 {
    Ecore_Evas_Interface_Software_X11 *iface;
@@ -4082,7 +4089,7 @@ ecore_evas_gl_x11_pixmap_new(const char *disp_name, Ecore_X_Window parent, int x
 
 }
 
-EAPI Ecore_X_Pixmap 
+EAPI Ecore_X_Pixmap
 ecore_evas_gl_x11_pixmap_get(const Ecore_Evas *ee)
 {
    Ecore_Evas_Interface_Gl_X11 *iface;
@@ -5449,3 +5456,344 @@ _ecore_evas_animator_thaw(Ecore_Animator *in)
                                            EINA_INLIST_GET(animator));
    _ticking_start(ee);
 }
+
+EAPI void
+ecore_evas_callback_selection_changed_set(Ecore_Evas *ee, Ecore_Evas_Selection_Changed_Cb func)
+{
+   ECORE_EVAS_CHECK(ee);
+   ee->func.fn_selection_changed = func;
+}
+
+static Ecore_Evas_Selection_Seat_Buffers*
+_fetch_selection_buffers_of_seat(Ecore_Evas *ee, unsigned int seat, Eina_Bool create)
+{
+   Ecore_Evas_Selection_Seat_Buffers *buffers;
+   if (!ee->selection_buffers)
+     ee->selection_buffers = eina_hash_int32_new(free);
+
+   buffers = eina_hash_find(ee->selection_buffers, &seat);
+
+   if (!buffers && create)
+     {
+        buffers = calloc(1, sizeof(Ecore_Evas_Selection_Seat_Buffers));
+        buffers->seat = seat;
+        eina_hash_add(ee->selection_buffers, &seat, buffers);
+     }
+   return buffers;
+}
+
+static Eina_Bool
+_deliver_cb(Ecore_Evas *ee, unsigned int seat, Ecore_Evas_Selection_Buffer buffer, const char *type, Eina_Rw_Slice *slice)
+{
+   Ecore_Evas_Selection_Seat_Buffers *buffers;
+   Eina_Content *content;
+   Eina_Content *converted = NULL;
+   Eina_Bool result = EINA_FALSE;
+
+   INF("Delivery request on seat %d in buffer %d", seat, buffer);
+
+   buffers = _fetch_selection_buffers_of_seat(ee, seat, EINA_FALSE);
+   EINA_SAFETY_ON_NULL_GOTO(buffers, free_everything);
+   content = buffers->selection_buffer[buffer];
+   EINA_SAFETY_ON_NULL_GOTO(content, free_everything);
+   if (!eina_streq(type, eina_content_type_get(content)))
+     converted = eina_content_convert(content, type);
+   else
+     converted = content;
+
+   EINA_SAFETY_ON_NULL_GOTO(converted, free_everything);
+   *slice = eina_slice_dup(eina_content_data_get(converted));
+   result = EINA_TRUE;
+
+   if (buffer == ECORE_EVAS_SELECTION_BUFFER_DRAG_AND_DROP_BUFFER)
+     {
+        ee->drag.accepted = EINA_TRUE;
+     }
+
+free_everything:
+   if (converted && content && !eina_streq(type, eina_content_type_get(content)))
+     eina_content_free(converted);
+
+   return result;
+}
+
+static void
+_cancel_cb(Ecore_Evas *ee, unsigned int seat, Ecore_Evas_Selection_Buffer buffer)
+{
+   Ecore_Evas_Selection_Seat_Buffers *buffers;
+
+   INF("Cancel request on seat %d in buffer %d", seat, buffer);
+
+   buffers = _fetch_selection_buffers_of_seat(ee, seat, EINA_FALSE);
+   EINA_SAFETY_ON_FALSE_RETURN(buffers);
+   EINA_SAFETY_ON_FALSE_RETURN(buffers->selection_buffer[buffer]);
+   eina_content_free(buffers->selection_buffer[buffer]);
+   buffers->selection_buffer[buffer] = NULL;
+
+   if (buffer == ECORE_EVAS_SELECTION_BUFFER_DRAG_AND_DROP_BUFFER)
+     {
+        ee->drag.rep = NULL;
+        if (ee->drag.free)
+          ee->drag.free(ee, seat, ee->drag.data, EINA_FALSE);
+        ee->drag.free = NULL;
+     }
+}
+
+#define CALL(call)  (ee->engine.func->fn_ ##call ? : fallback_ ##call)
+
+static Eina_Array*
+_iterator_to_array(Eina_Iterator *iter, const char *existing_type)
+{
+   Eina_Array *ret = eina_array_new(10);
+   const char *type;
+
+   if (existing_type)
+     eina_array_push(ret, existing_type);
+
+   EINA_ITERATOR_FOREACH(iter, type)
+     {
+        eina_array_push(ret, type);
+     }
+   eina_iterator_free(iter);
+
+   return ret;
+}
+
+EAPI Eina_Bool
+ecore_evas_selection_set(Ecore_Evas *ee, unsigned int seat, Ecore_Evas_Selection_Buffer buffer, Eina_Content *content)
+{
+   EINA_SAFETY_ON_NULL_RETURN_VAL(ee, EINA_FALSE);
+   EINA_SAFETY_ON_FALSE_RETURN_VAL(buffer >= 0 && buffer < ECORE_EVAS_SELECTION_BUFFER_LAST, EINA_FALSE);
+   Eina_Iterator *available_type = NULL;
+   Eina_Bool success;
+   Ecore_Evas_Selection_Seat_Buffers *buffers;
+
+   INF("Selection set on seat %d in buffer %d", seat, buffer);
+
+   buffers = _fetch_selection_buffers_of_seat(ee, seat, EINA_TRUE);
+
+   if (content)
+     available_type = eina_content_possible_conversions(content);
+
+   if (buffer == ECORE_EVAS_SELECTION_BUFFER_DRAG_AND_DROP_BUFFER)
+     {
+        ERR("You cannot set a selection with this API, please use the API to start a drag operation");
+        return EINA_FALSE;
+     }
+
+   success = CALL(selection_claim)(ee, seat, buffer, _iterator_to_array(available_type, content ? eina_content_type_get(content) : NULL), content ? _deliver_cb : NULL, content ? _cancel_cb : NULL);
+   if (success)
+     {
+        EINA_SAFETY_ON_FALSE_RETURN_VAL(buffers->selection_buffer[buffer] == NULL, EINA_FALSE);
+        //keep this after the claim, the claim might call cancel, which would overwrite this.
+        buffers->selection_buffer[buffer] = content;
+     }
+   else
+     {
+        eina_content_free(content);
+     }
+
+   return success;
+}
+
+EAPI Eina_Bool
+ecore_evas_selection_exists(Ecore_Evas *ee, unsigned int seat, Ecore_Evas_Selection_Buffer buffer)
+{
+   EINA_SAFETY_ON_NULL_RETURN_VAL(ee, EINA_FALSE);
+   EINA_SAFETY_ON_FALSE_RETURN_VAL(buffer >= 0 && buffer < ECORE_EVAS_SELECTION_BUFFER_LAST, EINA_FALSE);
+   Ecore_Evas_Selection_Seat_Buffers *buffers;
+
+   INF("Exists request on seat %d in buffer %d", seat, buffer);
+
+   buffers = _fetch_selection_buffers_of_seat(ee, seat, EINA_TRUE);
+   if (buffers->selection_buffer[buffer])
+     return EINA_TRUE;
+   else
+     {
+        return CALL(selection_has_owner)(ee, seat, buffer);
+     }
+}
+
+static Eina_Array*
+_iterator_to_array_stringshared(Eina_Iterator *iter)
+{
+   Eina_Array *ret = eina_array_new(10);
+   const char *type;
+
+   EINA_ITERATOR_FOREACH(iter, type)
+     {
+        eina_array_push(ret, eina_stringshare_add(type));
+     }
+   eina_iterator_free(iter);
+
+   return ret;
+}
+
+EAPI Eina_Future*
+ecore_evas_selection_get(Ecore_Evas *ee, unsigned int seat, Ecore_Evas_Selection_Buffer buffer, Eina_Iterator *acceptable_types)
+{
+   EINA_SAFETY_ON_NULL_RETURN_VAL(ee, NULL);
+   EINA_SAFETY_ON_FALSE_RETURN_VAL(buffer >= 0 && buffer < ECORE_EVAS_SELECTION_BUFFER_LAST, NULL);
+
+   INF("Selection get request on seat %d in buffer %d", seat, buffer);
+
+   return CALL(selection_request)(ee, seat, buffer, _iterator_to_array_stringshared(acceptable_types));
+}
+
+EAPI Eina_Bool
+ecore_evas_drag_start(Ecore_Evas *ee, unsigned int seat, Eina_Content *content, Ecore_Evas *drag_rep, const char* action, Ecore_Evas_Drag_Finished terminate_cb, void *data)
+{
+   EINA_SAFETY_ON_NULL_RETURN_VAL(ee, EINA_FALSE);
+   EINA_SAFETY_ON_NULL_RETURN_VAL(content, EINA_FALSE);
+   Eina_Iterator *available_type = eina_content_possible_conversions(content);
+   Eina_Bool success;
+   Ecore_Evas_Selection_Seat_Buffers *buffers;
+
+   INF("Drag start on seat %d", seat);
+
+   buffers = _fetch_selection_buffers_of_seat(ee, seat, EINA_TRUE);
+   success = CALL(dnd_start)(ee, seat, _iterator_to_array(available_type, eina_content_type_get(content)), drag_rep, _deliver_cb, _cancel_cb, action);
+   EINA_SAFETY_ON_FALSE_RETURN_VAL(buffers->selection_buffer[ECORE_EVAS_SELECTION_BUFFER_DRAG_AND_DROP_BUFFER] == NULL, EINA_FALSE);
+   //keep this after the claim, the claim might call cancel, which would overwrite this.
+   buffers->selection_buffer[ECORE_EVAS_SELECTION_BUFFER_DRAG_AND_DROP_BUFFER] = content;
+
+   ee->drag.rep = drag_rep;
+   ee->drag.free = terminate_cb;
+   ee->drag.data = data;
+   ee->drag.accepted = EINA_FALSE;
+
+   return success;
+}
+
+EAPI Eina_Bool
+ecore_evas_drag_cancel(Ecore_Evas *ee, unsigned int seat)
+{
+   EINA_SAFETY_ON_NULL_RETURN_VAL(ee, EINA_FALSE);
+
+   INF("Drag cancel on seat %d", seat);
+
+   return CALL(dnd_stop)(ee, seat);
+}
+
+EAPI void
+ecore_evas_callback_drop_motion_set(Ecore_Evas *ee, Ecore_Evas_Motion_Cb cb)
+{
+   ECORE_EVAS_CHECK(ee);
+   ee->func.fn_dnd_motion = cb;
+}
+
+EAPI void
+ecore_evas_callback_drop_state_changed_set(Ecore_Evas *ee, Ecore_Evas_State_Changed cb)
+{
+   ECORE_EVAS_CHECK(ee);
+   ee->func.fn_dnd_state_change = cb;
+}
+
+EAPI void
+ecore_evas_callback_drop_drop_set(Ecore_Evas *ee, Ecore_Evas_Drop_Cb cb)
+{
+   ECORE_EVAS_CHECK(ee);
+   ee->func.fn_dnd_drop = cb;
+}
+
+typedef struct {
+   Eina_Array *available_mime_types;
+   Eina_Position2D pos;
+} Ecore_Evas_Active_Dnd;
+
+static void
+_ecore_evas_active_dnd_free(Ecore_Evas_Active_Dnd *dnd)
+{
+   eina_array_free(dnd->available_mime_types);
+   free(dnd);
+}
+
+EAPI void
+ecore_evas_dnd_enter(Ecore_Evas *ee, unsigned int seat, Eina_Iterator *available_types, Eina_Position2D pos)
+{
+   Eina_Stringshare *s;
+   Ecore_Evas_Active_Dnd *dnd;
+
+   ECORE_EVAS_CHECK(ee);
+   if (!ee->active_drags)
+     {
+        ee->active_drags = eina_hash_int32_new((Eina_Free_Cb)_ecore_evas_active_dnd_free);
+     }
+
+   dnd = calloc(1, sizeof(Ecore_Evas_Active_Dnd));
+   dnd->available_mime_types = eina_array_new(5);
+   eina_hash_add(ee->active_drags, &seat, dnd);
+
+   EINA_ITERATOR_FOREACH(available_types, s)
+     {
+        eina_array_push(dnd->available_mime_types, s);
+     }
+   eina_iterator_free(available_types);
+
+   if (ee->func.fn_dnd_state_change)
+     ee->func.fn_dnd_state_change(ee, seat, pos, EINA_TRUE);
+}
+
+EAPI void
+ecore_evas_dnd_position_set(Ecore_Evas *ee, unsigned int seat, Eina_Position2D pos)
+{
+   Ecore_Evas_Active_Dnd *dnd;
+
+   ECORE_EVAS_CHECK(ee);
+   EINA_SAFETY_ON_NULL_RETURN(ee->active_drags);
+   dnd = eina_hash_find(ee->active_drags, &seat);
+   EINA_SAFETY_ON_NULL_RETURN(dnd);
+   dnd->pos = pos;
+   if (ee->func.fn_dnd_motion)
+     ee->func.fn_dnd_motion(ee, seat, pos);
+}
+
+EAPI void
+ecore_evas_dnd_leave(Ecore_Evas *ee, unsigned int seat, Eina_Position2D pos)
+{
+   Ecore_Evas_Active_Dnd *dnd;
+
+   ECORE_EVAS_CHECK(ee);
+   EINA_SAFETY_ON_NULL_RETURN(ee->active_drags);
+   dnd = eina_hash_find(ee->active_drags, &seat);
+   EINA_SAFETY_ON_NULL_RETURN(dnd);
+
+   if (ee->func.fn_dnd_state_change)
+     ee->func.fn_dnd_state_change(ee, seat, pos, EINA_FALSE);
+   eina_hash_del(ee->active_drags, &seat, dnd);
+   if (eina_hash_population(ee->active_drags) == 0)
+     {
+        eina_hash_free(ee->active_drags);
+        ee->active_drags = NULL;
+     }
+}
+
+EAPI Eina_Position2D
+ecore_evas_dnd_pos_get(Ecore_Evas *ee, unsigned int seat)
+{
+   Ecore_Evas_Active_Dnd *dnd;
+
+   ECORE_EVAS_CHECK_GOTO(ee, err);
+   EINA_SAFETY_ON_NULL_RETURN_VAL(ee->active_drags, EINA_POSITION2D(0, 0));
+   dnd = eina_hash_find(ee->active_drags, &seat);
+   EINA_SAFETY_ON_NULL_RETURN_VAL(dnd, EINA_POSITION2D(0, 0));
+
+   return dnd->pos;
+err:
+   return EINA_POSITION2D(0, 0);
+}
+
+EAPI Eina_Accessor*
+ecore_evas_drop_available_types_get(Ecore_Evas *ee, unsigned int seat)
+{
+   Ecore_Evas_Active_Dnd *dnd;
+
+   ECORE_EVAS_CHECK_GOTO(ee, err);
+   EINA_SAFETY_ON_NULL_RETURN_VAL(ee->active_drags, NULL);
+   dnd = eina_hash_find(ee->active_drags, &seat);
+   EINA_SAFETY_ON_NULL_RETURN_VAL(dnd, NULL);
+
+   return eina_array_accessor_new(dnd->available_mime_types);
+err:
+   return NULL;
+}
diff --git a/src/lib/ecore_evas/ecore_evas_fallback_selection.c b/src/lib/ecore_evas/ecore_evas_fallback_selection.c
new file mode 100644
index 0000000000..1088e617f7
--- /dev/null
+++ b/src/lib/ecore_evas/ecore_evas_fallback_selection.c
@@ -0,0 +1,115 @@
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <Ecore.h>
+#include "ecore_private.h"
+#include "Ecore_Evas.h"
+#include "ecore_evas_private.h"
+#include <Efl_Core.h>
+
+typedef struct {
+   Ecore_Evas_Selection_Callbacks callbacks[ECORE_EVAS_SELECTION_BUFFER_LAST];
+   int seat;
+} Ecore_Evas_Fallback_Selection_Data;
+
+static Ecore_Evas_Fallback_Selection_Data data[ECORE_EVAS_SELECTION_BUFFER_LAST];
+
+void
+fallback_selection_shutdown(Ecore_Evas *ee)
+{
+   for (int i = 0; i < ECORE_EVAS_SELECTION_BUFFER_LAST; ++i)
+     {
+        if (data->callbacks[i].cancel)
+          data->callbacks[i].cancel(ee, data->seat, i);
+     }
+}
+
+Eina_Bool
+fallback_selection_claim(Ecore_Evas *ee, unsigned int seat, Ecore_Evas_Selection_Buffer selection, Eina_Array *available_types, Ecore_Evas_Internal_Delivery delivery, Ecore_Evas_Internal_Cancel cancel)
+{
+   Ecore_Evas_Selection_Callbacks *callbacks = &data->callbacks[selection];
+
+   if (callbacks->cancel)
+     {
+        callbacks->cancel(ee, data->seat, selection);
+        eina_array_free(callbacks->available_types);
+     }
+
+   callbacks->delivery = delivery;
+   callbacks->cancel = cancel;
+   callbacks->available_types = available_types;
+   data->seat = seat;
+
+   if (ee->func.fn_selection_changed)
+     ee->func.fn_selection_changed(ee, seat, selection);
+
+   return EINA_TRUE;
+}
+
+Eina_Bool
+fallback_selection_has_owner(Ecore_Evas *ee EINA_UNUSED, unsigned int seat EINA_UNUSED, Ecore_Evas_Selection_Buffer selection EINA_UNUSED)
+{
+   return EINA_FALSE; //if the real selection buffer does not contain it, then we dont know it either.
+}
+
+Eina_Stringshare*
+available_types(Eina_Array *acceptable_types, Eina_Array *available_types)
+{
+   unsigned int found_type_id = INT_MAX;
+   Eina_Stringshare *found_type = NULL;
+   Eina_Stringshare *type;
+
+   for (unsigned int i = 0; i < eina_array_count_get(acceptable_types); ++i)
+     {
+        unsigned int out = -1;
+
+        type = eina_array_data_get(acceptable_types, i);
+
+        if (!eina_array_find(available_types, type, &out))
+          continue;
+        if (out >= found_type_id)
+          continue;
+        found_type_id = out;
+        found_type = type;
+        eina_stringshare_del(type);
+     }
+  eina_array_free(acceptable_types);
+
+  return found_type;
+}
+
+Eina_Future*
+fallback_selection_request(Ecore_Evas *ee EINA_UNUSED, unsigned int seat, Ecore_Evas_Selection_Buffer selection, Eina_Array *acceptable_type)
+{
+   Ecore_Evas_Selection_Callbacks callbacks = data->callbacks[selection];
+   Eina_Content *result;
+   Eina_Stringshare *serving_type;
+   Eina_Rw_Slice slice_data;
+   Eina_Value value;
+
+   if (!callbacks.delivery)
+     return eina_future_resolved(efl_loop_future_scheduler_get(efl_main_loop_get()), eina_value_int_init(0));
+
+   serving_type = available_types(acceptable_type, callbacks.available_types);
+   if (!serving_type)
+     return NULL; //Silent return cause we cannot deliver a good type
+
+   EINA_SAFETY_ON_FALSE_RETURN_VAL(callbacks.delivery(ee, seat, selection, serving_type, &slice_data), NULL);
+   result = eina_content_new(eina_rw_slice_slice_get(slice_data), serving_type);
+   value = eina_value_content_init(result);
+   eina_content_free(result);
+
+   return eina_future_resolved(efl_loop_future_scheduler_get(efl_main_loop_get()), value);
+}
+Eina_Bool
+fallback_dnd_start(Ecore_Evas *ee EINA_UNUSED, unsigned int seat EINA_UNUSED, Eina_Array *available_types EINA_UNUSED, Ecore_Evas *drag_rep EINA_UNUSED, Ecore_Evas_Internal_Delivery delivery EINA_UNUSED, Ecore_Evas_Internal_Cancel cancel EINA_UNUSED, const char* action EINA_UNUSED)
+{
+   return EINA_FALSE;
+}
+
+Eina_Bool
+fallback_dnd_stop(Ecore_Evas *ee EINA_UNUSED, unsigned int seat EINA_UNUSED)
+{
+   return EINA_FALSE;
+}
diff --git a/src/lib/ecore_evas/ecore_evas_private.h b/src/lib/ecore_evas/ecore_evas_private.h
index 474b7a35ed..10191b0152 100644
--- a/src/lib/ecore_evas/ecore_evas_private.h
+++ b/src/lib/ecore_evas/ecore_evas_private.h
@@ -33,6 +33,10 @@
 
 EAPI extern int _ecore_evas_log_dom;
 
+EAPI Eina_Error ecore_evas_no_matching_type;
+EAPI Eina_Error ecore_evas_no_selection;
+EAPI Eina_Error ecore_evas_request_replaced;
+
 #ifdef ECORE_EVAS_DEFAULT_LOG_COLOR
 # undef ECORE_EVAS_DEFAULT_LOG_COLOR
 #endif
@@ -78,6 +82,13 @@ typedef struct _Ecore_Evas_Interface Ecore_Evas_Interface;
 typedef struct _Ecore_Evas_Aux_Hint Ecore_Evas_Aux_Hint;
 typedef struct _Ecore_Evas_Cursor Ecore_Evas_Cursor;
 
+typedef Eina_Bool (*Ecore_Evas_Internal_Delivery)(Ecore_Evas *ee, unsigned int seat, Ecore_Evas_Selection_Buffer buffer, const char *type, Eina_Rw_Slice *slice);
+typedef void (*Ecore_Evas_Internal_Cancel)(Ecore_Evas *ee, unsigned int seat, Ecore_Evas_Selection_Buffer buffer);
+typedef struct {
+   Ecore_Evas_Internal_Delivery delivery;
+   Ecore_Evas_Internal_Cancel cancel;
+   Eina_Array *available_types;
+} Ecore_Evas_Selection_Callbacks;
 /* Engines interfaces */
 struct _Ecore_Evas_Engine_Func
 {
@@ -171,6 +182,12 @@ struct _Ecore_Evas_Engine_Func
    Eina_Bool (*fn_prepare)(Ecore_Evas *ee);
 
    double (*fn_last_tick_get)(Ecore_Evas *ee);
+
+   Eina_Bool (*fn_selection_claim)(Ecore_Evas *ee, unsigned int seat, Ecore_Evas_Selection_Buffer selection, Eina_Array *available_types, Ecore_Evas_Internal_Delivery delivery, Ecore_Evas_Internal_Cancel cancel);
+   Eina_Bool (*fn_selection_has_owner)(Ecore_Evas *ee, unsigned int seat, Ecore_Evas_Selection_Buffer selection);
+   Eina_Future* (*fn_selection_request)(Ecore_Evas *ee, unsigned int seat, Ecore_Evas_Selection_Buffer selection, Eina_Array *acceptable_types); // a future containing a Eina_Content, type must be in acceptable_types
+   Eina_Bool (*fn_dnd_start)(Ecore_Evas *ee, unsigned int seat, Eina_Array *available_types, Ecore_Evas *drag_rep, Ecore_Evas_Internal_Delivery delivery, Ecore_Evas_Internal_Cancel cancel, const char *action);
+   Eina_Bool (*fn_dnd_stop)(Ecore_Evas *ee, unsigned int seat);
 };
 
 struct _Ecore_Evas_Interface
@@ -202,6 +219,11 @@ struct _Ecore_Evas_Cursor {
    int pos_y;
 };
 
+typedef struct {
+   unsigned int seat;
+   Eina_Content *selection_buffer[ECORE_EVAS_SELECTION_BUFFER_LAST];
+} Ecore_Evas_Selection_Seat_Buffers;
+
 struct _Ecore_Evas
 {
    EINA_INLIST;
@@ -224,6 +246,8 @@ struct _Ecore_Evas
 
    Eina_List  *vnc_server; /* @since 1.19 */
 
+   Eina_Hash  *selection_buffers;
+
    struct {
       int      x, y, w, h;
    } req;
@@ -259,7 +283,7 @@ struct _Ecore_Evas
          Eina_Bool       supported;      // indicate that the underlying window system supports window manager rotation protocol
          Eina_Bool       app_set;        // indicate that the ee supports window manager rotation protocol
          Eina_Bool       win_resize;     // indicate that the ee will be resized by the WM
-         int             angle;          // rotation value which is decided by the WM 
+         int             angle;          // rotation value which is decided by the WM
          int             w, h;           // window size to rotate
          int             preferred_rot;  // preferred rotation hint
          int            *available_rots; // array of avaialable rotation values
@@ -323,6 +347,10 @@ struct _Ecore_Evas
       void          (*fn_focus_device_out) (Ecore_Evas *ee, Efl_Input_Device *seat);
       void          (*fn_device_mouse_in) (Ecore_Evas *ee, Efl_Input_Device *mouse);
       void          (*fn_device_mouse_out) (Ecore_Evas *ee, Efl_Input_Device *mouse);
+      void          (*fn_selection_changed) (Ecore_Evas *ee, unsigned int seat, Ecore_Evas_Selection_Buffer selection);
+      void          (*fn_dnd_motion) (Ecore_Evas *ee, unsigned int seat, Eina_Position2D p);
+      void          (*fn_dnd_state_change) (Ecore_Evas *ee, unsigned int seat, Eina_Position2D p, Eina_Bool inside);
+      void          (*fn_dnd_drop)(Ecore_Evas *ee, unsigned int seat, Eina_Position2D p, const char *action);
    } func;
 
    Ecore_Evas_Engine engine;
@@ -353,6 +381,14 @@ struct _Ecore_Evas
       unsigned char rotation_changed : 1;
    } delayed;
 
+   Eina_Hash *active_drags;
+   struct {
+      Ecore_Evas *rep;
+      void *data;
+      Ecore_Evas_Drag_Finished free;
+      Eina_Bool accepted;
+   } drag;
+
    int refcount;
 //#define ECORE_EVAS_ASYNC_RENDER_DEBUG 1 /* TODO: remove me */
 #ifdef ECORE_EVAS_ASYNC_RENDER_DEBUG
@@ -374,6 +410,7 @@ struct _Ecore_Evas
    unsigned char first_frame : 1;
    unsigned char self_del : 1;
    unsigned char evas_dying : 1;
+   unsigned char fallback_interface : 1;
 };
 
 struct _Ecore_Evas_Aux_Hint
@@ -486,6 +523,20 @@ EAPI Eina_Bool ecore_evas_render(Ecore_Evas *ee);
 EAPI Evas *ecore_evas_evas_new(Ecore_Evas *ee, int w, int h);
 EAPI void ecore_evas_done(Ecore_Evas *ee, Eina_Bool single_window);
 
+EAPI void ecore_evas_dnd_position_set(Ecore_Evas *ee, unsigned int seat, Eina_Position2D pos);
+EAPI void ecore_evas_dnd_leave(Ecore_Evas *ee, unsigned int seat, Eina_Position2D pos);
+EAPI void ecore_evas_dnd_enter(Ecore_Evas *ee, unsigned int seat, Eina_Iterator *available_types, Eina_Position2D pos);
+EAPI Eina_Position2D ecore_evas_dnd_pos_get(Ecore_Evas *ee, unsigned int seat);
+
+
+void fallback_selection_init(Ecore_Evas *ee);
+void fallback_selection_shutdown(Ecore_Evas *ee);
+Eina_Bool fallback_selection_claim(Ecore_Evas *ee, unsigned int seat, Ecore_Evas_Selection_Buffer selection, Eina_Array *available_types, Ecore_Evas_Internal_Delivery delivery, Ecore_Evas_Internal_Cancel cancel);
+Eina_Bool fallback_selection_has_owner(Ecore_Evas *ee, unsigned int seat, Ecore_Evas_Selection_Buffer selection);
+Eina_Future* fallback_selection_request(Ecore_Evas *ee, unsigned int seat, Ecore_Evas_Selection_Buffer selection, Eina_Array *acceptable_type);
+Eina_Bool fallback_dnd_start(Ecore_Evas *ee, unsigned int seat, Eina_Array *available_types, Ecore_Evas *drag_rep, Ecore_Evas_Internal_Delivery delivery, Ecore_Evas_Internal_Cancel cancel, const char* action);
+Eina_Bool fallback_dnd_stop(Ecore_Evas *ee, unsigned int seat);
+
 #ifdef IPA_YLNO_ESU_LANRETNI_MLE
 EAPI Ecore_Evas *_wayland_shm_new(const char *disp_name, Ecore_Window parent, int x, int y, int w, int h, Eina_Bool frame);
 EAPI Ecore_Evas *_wayland_egl_new(const char *disp_name, Ecore_Window parent, int x, int y, int w, int h, Eina_Bool frame, const int *opt);
diff --git a/src/lib/ecore_evas/meson.build b/src/lib/ecore_evas/meson.build
index c0fb459a56..890e3c42b3 100644
--- a/src/lib/ecore_evas/meson.build
+++ b/src/lib/ecore_evas/meson.build
@@ -23,7 +23,8 @@ ecore_evas_src = [
   'ecore_evas_cocoa.h',
   'ecore_evas_win32.h',
   'ecore_evas_x11.h',
-  'ecore_evas_util.c'
+  'ecore_evas_util.c',
+  'ecore_evas_fallback_selection.c'
 ]
 
 
diff --git a/src/lib/elementary/meson.build b/src/lib/elementary/meson.build
index 145d958e21..0cb3fc7db9 100644
--- a/src/lib/elementary/meson.build
+++ b/src/lib/elementary/meson.build
@@ -947,7 +947,7 @@ elementary_src = [
   'efl_ui_collection_view.c',
   'efl_ui_pager.c',
   'efl_ui_stack.c',
-  'efl_ui_separator.c'
+  'efl_ui_separator.c',
 ]
 
 elementary_deps = [emile, eo, efl, edje, ethumb, ethumb_client, emotion, ecore_imf, ecore_con, eldbus, efreet, efreet_mime, efreet_trash, eio, atspi, dl, intl]
diff --git a/src/modules/ecore_evas/engines/sdl/ecore_evas_sdl.c b/src/modules/ecore_evas/engines/sdl/ecore_evas_sdl.c
index 8abc7401b6..ef4ba057b9 100644
--- a/src/modules/ecore_evas/engines/sdl/ecore_evas_sdl.c
+++ b/src/modules/ecore_evas/engines/sdl/ecore_evas_sdl.c
@@ -455,6 +455,9 @@ static Ecore_Evas_Engine_Func _ecore_sdl_engine_func =
    NULL, //fn_pointer_device_xy_get
    NULL, //fn_prepare
    NULL, //fn_last_tick_get
+   NULL, //fn_selection_claim
+   NULL, //fn_selection_has_owner
+   NULL, //fn_selection_request
 };
 
 static Ecore_Evas*
diff --git a/src/modules/ecore_evas/engines/wayland/ecore_evas_wayland_common.c b/src/modules/ecore_evas/engines/wayland/ecore_evas_wayland_common.c
index c14bdbcd33..e0e2094e2f 100644
--- a/src/modules/ecore_evas/engines/wayland/ecore_evas_wayland_common.c
+++ b/src/modules/ecore_evas/engines/wayland/ecore_evas_wayland_common.c
@@ -881,14 +881,14 @@ _rotation_do(Ecore_Evas *ee, int rotation, int resize)
                     {
                        /* resize the canvas */
                        evas_output_size_set(ee->evas, ee->req.w, ee->req.h);
-                       evas_output_viewport_set(ee->evas, 0, 0, 
+                       evas_output_viewport_set(ee->evas, 0, 0,
                                                 ee->req.w, ee->req.h);
                     }
                   else
                     {
                        /* resize the canvas */
                        evas_output_size_set(ee->evas, ee->req.h, ee->req.w);
-                       evas_output_viewport_set(ee->evas, 0, 0, 
+                       evas_output_viewport_set(ee->evas, 0, 0,
                                                 ee->req.h, ee->req.w);
                     }
                }
@@ -2474,6 +2474,9 @@ static Ecore_Evas_Engine_Func _ecore_wl_engine_func =
    _ecore_evas_wl_common_pointer_device_xy_get,
    _ecore_evas_wl_common_prepare,
    NULL, //fn_last_tick_get
+   NULL, //fn_selection_claim
+   NULL, //fn_selection_has_owner
+   NULL, //fn_selection_request
 };
 
 static void
diff --git a/src/modules/ecore_evas/engines/win32/ecore_evas_win32.c b/src/modules/ecore_evas/engines/win32/ecore_evas_win32.c
index 39def9d49f..6198ed4bac 100644
--- a/src/modules/ecore_evas/engines/win32/ecore_evas_win32.c
+++ b/src/modules/ecore_evas/engines/win32/ecore_evas_win32.c
@@ -1284,6 +1284,9 @@ static Ecore_Evas_Engine_Func _ecore_win32_engine_func =
      NULL, //fn_pointer_device_xy_get
      NULL, //fn_prepare
      NULL, //fn_last_tick_get
+     NULL, //fn_selection_claim
+     NULL, //fn_selection_has_owner
+     NULL, //fn_selection_request
 };
 
 #endif /* BUILD_ECORE_EVAS_WIN32 */
diff --git a/src/modules/ecore_evas/engines/x/ecore_evas_x.c b/src/modules/ecore_evas/engines/x/ecore_evas_x.c
index abea314d33..fb6eaa63f1 100644
--- a/src/modules/ecore_evas/engines/x/ecore_evas_x.c
+++ b/src/modules/ecore_evas/engines/x/ecore_evas_x.c
@@ -361,7 +361,7 @@ _ecore_evas_x_aux_hints_supported_update(Ecore_Evas *ee)
         for (i = 0; i < num; i++)
           {
              hint = eina_stringshare_add(str[i]);
-             ee->prop.aux_hint.supported_list = 
+             ee->prop.aux_hint.supported_list =
                eina_list_append(ee->prop.aux_hint.supported_list, hint);
           }
 
@@ -414,7 +414,7 @@ _ecore_evas_x_gl_window_new(Ecore_Evas *ee, Ecore_X_Window parent, int x, int y,
                        op++;
                        einfo->vsync = opt[op];
                     }
-#ifdef EVAS_ENGINE_GL_X11_SWAP_MODE_EXISTS                  
+#ifdef EVAS_ENGINE_GL_X11_SWAP_MODE_EXISTS
                   else if (opt[op] == ECORE_EVAS_GL_X11_OPT_SWAP_MODE)
                     {
                        op++;
@@ -845,7 +845,7 @@ _ecore_evas_x_event_property_change(void *data EINA_UNUSED, int type EINA_UNUSED
               Eina_Bool focus_skip : 1;
            } prop;
         } prev;
-        
+
         prev.x.modal = edata->state.modal;
         prev.x.sticky = edata->state.sticky;
         prev.x.maximized_v = edata->state.maximized_v;
@@ -856,7 +856,7 @@ _ecore_evas_x_event_property_change(void *data EINA_UNUSED, int type EINA_UNUSED
         prev.x.fullscreen = edata->state.fullscreen;
         prev.x.above = edata->state.above;
         prev.x.below = edata->state.below;
-        
+
         prev.prop.modal = ee->prop.modal;
         prev.prop.maximized = ee->prop.maximized;
         prev.prop.sticky = ee->prop.sticky;
@@ -879,7 +879,7 @@ _ecore_evas_x_event_property_change(void *data EINA_UNUSED, int type EINA_UNUSED
         ee->prop.sticky     = EINA_FALSE;
         ee->prop.fullscreen = EINA_FALSE;
 //        ee->prop.focus_skip = EINA_FALSE;
-        
+
         ecore_x_netwm_window_state_get(e->win, &state, &num);
         if (state)
           {
@@ -1253,7 +1253,7 @@ _ecore_evas_x_event_mouse_in(void *data EINA_UNUSED, int type EINA_UNUSED, void
    if ((!ee) || (ee->ignore_events)) return ECORE_CALLBACK_PASS_ON; /* pass on event */
    if (e->win != ee->prop.window) return ECORE_CALLBACK_PASS_ON;
    edata = ee->engine.data;
-/*   
+/*
     {
        time_t t;
        char *ct;
@@ -1304,7 +1304,7 @@ _ecore_evas_x_event_mouse_in(void *data EINA_UNUSED, int type EINA_UNUSED, void
         edata->outdelay = NULL;
         _fake_out(ee);
      }
-   
+
    /* if (e->mode != ECORE_X_EVENT_MODE_NORMAL) return 0; */
    if (!_ecore_evas_mouse_in_check(ee, NULL))
      {
@@ -1388,7 +1388,7 @@ _ecore_evas_x_event_mouse_out(void *data EINA_UNUSED, int type EINA_UNUSED, void
         ecore_timer_del(edata->outdelay);
         edata->outdelay = NULL;
      }
-   
+
 //   if (e->mode != ECORE_X_EVENT_MODE_NORMAL) return 0;
 //   printf("OUT: ee->in=%i, e->mode=%i, e->detail=%i, dount_count=%i\n",
 //          ee->in, e->mode, e->detail, evas_event_down_count_get(ee->evas));
@@ -1417,7 +1417,7 @@ _ecore_evas_x_event_window_focus_in(void *data EINA_UNUSED, int type EINA_UNUSED
    ee = ecore_event_window_match(e->win);
    if ((!ee) || (ee->ignore_events)) return ECORE_CALLBACK_PASS_ON; /* pass on event */
    if (e->win != ee->prop.window) return ECORE_CALLBACK_PASS_ON;
-//xx// filtering with these doesnt help   
+//xx// filtering with these doesnt help
 //xx//   if (e->mode == ECORE_X_EVENT_MODE_UNGRAB) return ECORE_CALLBACK_PASS_ON;
    _ecore_evas_focus_device_set(ee, NULL, EINA_TRUE);
    return ECORE_CALLBACK_PASS_ON;
@@ -1433,7 +1433,7 @@ _ecore_evas_x_event_window_focus_out(void *data EINA_UNUSED, int type EINA_UNUSE
    ee = ecore_event_window_match(e->win);
    if ((!ee) || (ee->ignore_events)) return ECORE_CALLBACK_PASS_ON; /* pass on event */
    if (e->win != ee->prop.window) return ECORE_CALLBACK_PASS_ON;
-//xx// filtering with these doesnt help   
+//xx// filtering with these doesnt help
 //xx//   if (e->mode == ECORE_X_EVENT_MODE_GRAB) return ECORE_CALLBACK_PASS_ON;
 
 //   if (ee->prop.fullscreen)
@@ -2145,7 +2145,7 @@ _ecore_evas_x_resize(Ecore_Evas *ee, int w, int h)
      }
 
    /* check for valid property window
-    * 
+    *
     * NB: If we do not have one, check for valid pixmap rendering */
    if (!ee->prop.window)
      {
@@ -2153,7 +2153,7 @@ _ecore_evas_x_resize(Ecore_Evas *ee, int w, int h)
         if ((edata->pixmap.w != vw) || (edata->pixmap.h != vh))
           {
              /* free the backing pixmap */
-             if (edata->pixmap.back) 
+             if (edata->pixmap.back)
                ecore_x_pixmap_free(edata->pixmap.back);
           }
      }
@@ -2918,7 +2918,7 @@ _ecore_evas_x_aspect_set(Ecore_Evas *ee, double aspect)
 
    ee->prop.aspect = aspect;
    _ecore_evas_x_size_pos_hints_update(ee);
-// netwm state  
+// netwm state
 //   if (ee->should_be_visible)
 //     ecore_x_netwm_state_request_send(ee->prop.window, ee->engine.x.win_root,
 //                                      ECORE_X_WINDOW_STATE_STICKY, -1, sticky);
@@ -3545,14 +3545,14 @@ norandr:
    if (!found) goto norandr;
 }
 
-static void 
+static void
 _ecore_evas_x_pointer_xy_get(const Ecore_Evas *ee, Evas_Coord *x, Evas_Coord *y)
 {
    if (ee->prop.window)
      ecore_x_pointer_xy_get(ee->prop.window, x, y);
 }
 
-static Eina_Bool 
+static Eina_Bool
 _ecore_evas_x_pointer_warp(const Ecore_Evas *ee, Evas_Coord x, Evas_Coord y)
 {
    return ecore_x_pointer_warp(ee->prop.window, x, y);
@@ -3754,6 +3754,9 @@ static Ecore_Evas_Engine_Func _ecore_x_engine_func =
    NULL, //fn_pointer_device_xy_get
    NULL, //fn_prepare
    NULL, //fn_last_tick_get
+   NULL, //fn_selection_claim
+   NULL, //fn_selection_has_owner
+   NULL, //fn_selection_request
 };
 
 /*
@@ -3772,19 +3775,19 @@ _ecore_evas_x_render_pre(void *data, Evas *e EINA_UNUSED, void *event_info EINA_
    /* printf("\tPixman Size: %d %d\n", edata->pixmap.w, edata->pixmap.h); */
    /* printf("\tEE Size: %d %d\n", ee->w, ee->h); */
 
-   /* before rendering to the back buffer pixmap, we should check the 
-    * size. If the back buffer is not the proper size, destroy it and 
+   /* before rendering to the back buffer pixmap, we should check the
+    * size. If the back buffer is not the proper size, destroy it and
     * create a new one at the proper size */
    if ((edata->pixmap.w != ee->w) || (edata->pixmap.h != ee->h))
      {
         int fw = 0, fh = 0;
 
         /* free the backing pixmap */
-        if (edata->pixmap.back) 
+        if (edata->pixmap.back)
           ecore_x_pixmap_free(edata->pixmap.back);
 
-        edata->pixmap.back = 
-          ecore_x_pixmap_new(edata->win_root, ee->w, ee->h, 
+        edata->pixmap.back =
+          ecore_x_pixmap_new(edata->win_root, ee->w, ee->h,
                              edata->pixmap.depth);
 
         evas_output_framespace_get(ee->evas, NULL, NULL, &fw, &fh);
@@ -3803,7 +3806,7 @@ _ecore_evas_x_render_pre(void *data, Evas *e EINA_UNUSED, void *event_info EINA_
 
                   if (!evas_engine_info_set(ee->evas, (Evas_Engine_Info *)einfo))
                     {
-                       ERR("evas_engine_info_set() init engine '%s' failed.", 
+                       ERR("evas_engine_info_set() init engine '%s' failed.",
                            ee->driver);
                     }
                }
@@ -3821,7 +3824,7 @@ _ecore_evas_x_render_pre(void *data, Evas *e EINA_UNUSED, void *event_info EINA_
 
                   if (!evas_engine_info_set(ee->evas, (Evas_Engine_Info *)einfo))
                     {
-                       ERR("evas_engine_info_set() init engine '%s' failed.", 
+                       ERR("evas_engine_info_set() init engine '%s' failed.",
                            ee->driver);
                     }
                }
@@ -3844,8 +3847,8 @@ _ecore_evas_x_flush_post(void *data, Evas *e EINA_UNUSED, void *event_info EINA_
         /* printf("\tBack Pixmap: %d\n", edata->pixmap.back); */
         /* printf("\tFront Pixmap: %d\n", edata->pixmap.front); */
 
-        /* done drawing to the back buffer. flip it to the front so that 
-         * any calls to "fetch pixmap" will return the front buffer already 
+        /* done drawing to the back buffer. flip it to the front so that
+         * any calls to "fetch pixmap" will return the front buffer already
          * pre-rendered */
 
         /* record the current front buffer */
@@ -3870,7 +3873,7 @@ _ecore_evas_x_flush_post(void *data, Evas *e EINA_UNUSED, void *event_info EINA_
 
                   if (!evas_engine_info_set(ee->evas, (Evas_Engine_Info *)einfo))
                     {
-                       ERR("evas_engine_info_set() init engine '%s' failed.", 
+                       ERR("evas_engine_info_set() init engine '%s' failed.",
                            ee->driver);
                     }
                }
@@ -3888,7 +3891,7 @@ _ecore_evas_x_flush_post(void *data, Evas *e EINA_UNUSED, void *event_info EINA_
 
                   if (!evas_engine_info_set(ee->evas, (Evas_Engine_Info *)einfo))
                     {
-                       ERR("evas_engine_info_set() init engine '%s' failed.", 
+                       ERR("evas_engine_info_set() init engine '%s' failed.",
                            ee->driver);
                     }
                }
@@ -4307,9 +4310,9 @@ ecore_evas_software_x11_pixmap_new_internal(const char *disp_name, Ecore_X_Windo
         edata->pixmap.colormap = einfo->info.colormap;
 
         /* create front and back pixmaps for double-buffer rendering */
-        edata->pixmap.front = 
+        edata->pixmap.front =
           ecore_x_pixmap_new(parent, w, h, edata->pixmap.depth);
-        edata->pixmap.back = 
+        edata->pixmap.back =
           ecore_x_pixmap_new(parent, w, h, edata->pixmap.depth);
 
         einfo->info.drawable = edata->pixmap.back;
@@ -4322,7 +4325,7 @@ ecore_evas_software_x11_pixmap_new_internal(const char *disp_name, Ecore_X_Windo
           }
      }
 
-   /* FIXME: Allow of these set properties or do something with the 
+   /* FIXME: Allow of these set properties or do something with the
     * ee->prop.window (x window), which we do not have in pixmap case */
 
    /* _ecore_evas_x_hints_update(ee); */
@@ -4370,7 +4373,7 @@ _ecore_evas_software_x11_pixmap_visual_get(const Ecore_Evas *ee)
    return edata->pixmap.visual;
 }
 
-static unsigned long 
+static unsigned long
 _ecore_evas_software_x11_pixmap_colormap_get(const Ecore_Evas *ee)
 {
    if (!(!strcmp(ee->driver, "software_x11"))) return 0;
@@ -4378,7 +4381,7 @@ _ecore_evas_software_x11_pixmap_colormap_get(const Ecore_Evas *ee)
    return edata->pixmap.colormap;
 }
 
-static int 
+static int
 _ecore_evas_software_x11_pixmap_depth_get(const Ecore_Evas *ee)
 {
    if (!(!strcmp(ee->driver, "software_x11"))) return 0;
@@ -4719,9 +4722,9 @@ ecore_evas_gl_x11_pixmap_new_internal(const char *disp_name, Ecore_X_Window pare
         edata->pixmap.colormap = einfo->info.colormap;
 
         /* create front and back pixmaps for double-buffer rendering */
-        edata->pixmap.front = 
+        edata->pixmap.front =
           ecore_x_pixmap_new(parent, w, h, edata->pixmap.depth);
-        edata->pixmap.back = 
+        edata->pixmap.back =
           ecore_x_pixmap_new(parent, w, h, edata->pixmap.depth);
 
         einfo->info.drawable = edata->pixmap.back;
@@ -4779,7 +4782,7 @@ _ecore_evas_gl_x11_pixmap_visual_get(const Ecore_Evas *ee)
    return edata->pixmap.visual;
 }
 
-static unsigned long 
+static unsigned long
 _ecore_evas_gl_x11_pixmap_colormap_get(const Ecore_Evas *ee)
 {
    if (!(!strcmp(ee->driver, "opengl_x11"))) return 0;
@@ -4787,7 +4790,7 @@ _ecore_evas_gl_x11_pixmap_colormap_get(const Ecore_Evas *ee)
    return edata->pixmap.colormap;
 }
 
-static int 
+static int
 _ecore_evas_gl_x11_pixmap_depth_get(const Ecore_Evas *ee)
 {
    if (!(!strcmp(ee->driver, "opengl_x11"))) return 0;
diff --git a/src/tests/ecore/ecore_suite.c b/src/tests/ecore/ecore_suite.c
index b9248a814a..a0f6d19aba 100644
--- a/src/tests/ecore/ecore_suite.c
+++ b/src/tests/ecore/ecore_suite.c
@@ -30,6 +30,7 @@ static const Efl_Test_Case etc[] = {
   { "Ecore_Job", ecore_test_ecore_job },
   { "Ecore_Args", ecore_test_ecore_args },
   { "Ecore_Pipe", ecore_test_ecore_pipe },
+  { "Ecore_Evas_Selection", ecore_test_ecore_evas_selection },
   { NULL, NULL }
 };
 
diff --git a/src/tests/ecore/ecore_suite.h b/src/tests/ecore/ecore_suite.h
index a3327412fe..2621535f59 100644
--- a/src/tests/ecore/ecore_suite.h
+++ b/src/tests/ecore/ecore_suite.h
@@ -23,5 +23,6 @@ void ecore_test_ecore_file(TCase *tc);
 void ecore_test_ecore_job(TCase *tc);
 void ecore_test_ecore_args(TCase *tc);
 void ecore_test_ecore_pipe(TCase *tc);
+void ecore_test_ecore_evas_selection(TCase *tc);
 
 #endif /* _ECORE_SUITE_H */
diff --git a/src/tests/ecore/ecore_test_ecore_evas.c b/src/tests/ecore/ecore_test_ecore_evas.c
index 2e53f62082..0e7b09c41b 100644
--- a/src/tests/ecore/ecore_test_ecore_evas.c
+++ b/src/tests/ecore/ecore_test_ecore_evas.c
@@ -3,6 +3,7 @@
 #endif
 
 #include <Ecore_Evas.h>
+#include <Efl_Core.h>
 
 #include "ecore_suite.h"
 
@@ -70,8 +71,51 @@ EFL_START_TEST(ecore_test_ecore_evas_cocoa)
 }
 EFL_END_TEST
 
+static Eina_Value
+_verify_and_exit(void *data, const Eina_Value value, const Eina_Future *dead_future EINA_UNUSED)
+{
+   ck_assert_ptr_eq(eina_value_type_get(&value), EINA_VALUE_TYPE_CONTENT);
+   Eina_Content *content = eina_value_to_content(&value);
+   Eina_Content *reference = data;
+
+   ck_assert_int_eq(eina_content_data_get(content).len, eina_content_data_get(reference).len);
+   ck_assert_str_eq(eina_content_data_get(content).mem, eina_content_data_get(reference).mem);
+   ck_assert_str_eq(eina_content_type_get(content), eina_content_type_get(reference));
+
+   efl_loop_quit(efl_main_loop_get(), eina_value_int_init(0));
+
+   return EINA_VALUE_EMPTY;
+}
+
+EFL_START_TEST(ecore_test_ecore_evas_fallback_selection)
+{
+   Ecore_Evas *ee;
+   ecore_evas_init();
+
+   ee = ecore_evas_buffer_new(WINDOW_WIDTH, WINDOW_HEIGHT);
+   fail_if(ee == NULL);
+
+   for (int i = 0; i < ECORE_EVAS_SELECTION_BUFFER_LAST; ++i)
+     {
+        ck_assert_int_eq(ecore_evas_selection_exists(ee, 0, i), EINA_FALSE);
+     }
+   Eina_Content *content = eina_content_new((Eina_Slice)EINA_SLICE_STR_FULL("asdf"), "text/plain");
+   Eina_Content *ref = eina_content_new((Eina_Slice)EINA_SLICE_STR_FULL("asdf"), "text/plain");
+   ecore_evas_selection_set(ee, 0, ECORE_EVAS_SELECTION_BUFFER_SELECTION_BUFFER, content);
+
+   const char *types[] = {eina_stringshare_add("text/plain")};
+
+   Eina_Future *f = ecore_evas_selection_get(ee, 0, ECORE_EVAS_SELECTION_BUFFER_SELECTION_BUFFER, EINA_C_ARRAY_ITERATOR_NEW(types));
+   ck_assert_ptr_ne(f, NULL);
+   eina_future_then(f, _verify_and_exit, ref);
+   efl_task_run(efl_main_loop_get());
+   ecore_evas_shutdown();
+}
+EFL_END_TEST
+
 void ecore_test_ecore_evas(TCase *tc)
 {
    tcase_add_test(tc, ecore_test_ecore_evas_associate);
    tcase_add_test(tc, ecore_test_ecore_evas_cocoa);
+   tcase_add_test(tc, ecore_test_ecore_evas_fallback_selection);
 }
diff --git a/src/tests/ecore/ecore_test_ecore_evas_selection.c b/src/tests/ecore/ecore_test_ecore_evas_selection.c
new file mode 100644
index 0000000000..9efc5fe722
--- /dev/null
+++ b/src/tests/ecore/ecore_test_ecore_evas_selection.c
@@ -0,0 +1,89 @@
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <Ecore_Evas.h>
+#include <Efl_Core.h>
+
+#include "ecore_suite.h"
+
+#define WINDOW_HEIGHT 200
+#define WINDOW_WIDTH 200
+
+static int log_abort;
+static int log_abort_level;
+
+void
+fail_on_errors_teardown(void)
+{
+   eina_log_abort_on_critical_set(log_abort);
+   eina_log_abort_on_critical_level_set(log_abort_level);
+}
+
+void
+fail_on_errors_setup(void)
+{
+   log_abort = eina_log_abort_on_critical_get();
+   log_abort_level = eina_log_abort_on_critical_level_get();
+   eina_log_abort_on_critical_level_set(2);
+   eina_log_abort_on_critical_set(1);
+}
+
+static Ecore_Evas *ee;
+
+void
+_setup(void)
+{
+   ecore_evas_init();
+   ee = ecore_evas_buffer_new(50, 50);
+}
+
+void
+_teardown(void)
+{
+   ecore_evas_free(ee);
+   ecore_evas_shutdown();
+}
+
+EFL_START_TEST(ecore_test_selection_get_twice)
+{
+   //this is just running this and checking that we do not error
+   for (int i = 0; i < ECORE_EVAS_SELECTION_BUFFER_LAST; ++i)
+     {
+        if (i == ECORE_EVAS_SELECTION_BUFFER_DRAG_AND_DROP_BUFFER) continue;
+        const char *types[] = {eina_stringshare_add("text/plain")};
+        ck_assert_ptr_ne(ecore_evas_selection_get(ee, 0, i, EINA_C_ARRAY_ITERATOR_NEW(types)), NULL);
+     }
+   for (int i = 0; i < ECORE_EVAS_SELECTION_BUFFER_LAST; ++i)
+     {
+        if (i == ECORE_EVAS_SELECTION_BUFFER_DRAG_AND_DROP_BUFFER) continue;
+        const char *types[] = {eina_stringshare_add("text/plain")};
+        ck_assert_ptr_ne(ecore_evas_selection_get(ee, 0, i, EINA_C_ARRAY_ITERATOR_NEW(types)), NULL);
+     }
+}
+EFL_END_TEST
+
+EFL_START_TEST(ecore_test_selection_claim_twice)
+{
+   //this is just running this and checking that we do not error
+   for (int i = 0; i < ECORE_EVAS_SELECTION_BUFFER_LAST; ++i)
+     {
+        if (i == ECORE_EVAS_SELECTION_BUFFER_DRAG_AND_DROP_BUFFER) continue;
+        Eina_Content *content = eina_content_new((Eina_Slice)EINA_SLICE_STR_FULL("asdf"), "text/plain");
+        ck_assert_int_eq(ecore_evas_selection_set(ee, 0, i, content), EINA_TRUE);
+     }
+   for (int i = 0; i < ECORE_EVAS_SELECTION_BUFFER_LAST; ++i)
+     {
+        if (i == ECORE_EVAS_SELECTION_BUFFER_DRAG_AND_DROP_BUFFER) continue;
+        Eina_Content *content = eina_content_new((Eina_Slice)EINA_SLICE_STR_FULL("asdf"), "text/plain");
+        ck_assert_int_eq(ecore_evas_selection_set(ee, 0, i, content), EINA_TRUE);
+     }
+}
+EFL_END_TEST
+void ecore_test_ecore_evas_selection(TCase *tc)
+{
+   tcase_add_checked_fixture(tc, fail_on_errors_setup, fail_on_errors_teardown);
+   tcase_add_checked_fixture(tc, _setup, _teardown);
+   tcase_add_test(tc, ecore_test_selection_get_twice);
+   tcase_add_test(tc, ecore_test_selection_claim_twice);
+}
diff --git a/src/tests/ecore/meson.build b/src/tests/ecore/meson.build
index 9ce6848ce2..48c9350638 100644
--- a/src/tests/ecore/meson.build
+++ b/src/tests/ecore/meson.build
@@ -13,6 +13,7 @@ ecore_suite_src = [
   'ecore_test_job.c',
   'ecore_test_args.c',
   'ecore_test_pipe.c',
+  'ecore_test_ecore_evas_selection.c',
   'ecore_suite.h'
 ]
 
diff --git a/src/tests/elementary/efl_ui_window_cnp_dnd_slave.c b/src/tests/elementary/efl_ui_window_cnp_dnd_slave.c
new file mode 100644
index 0000000000..bf8c6d50bd
--- /dev/null
+++ b/src/tests/elementary/efl_ui_window_cnp_dnd_slave.c
@@ -0,0 +1,191 @@
+#define EFL_BETA_API_SUPPORT 1
+
+#include <Efl.h>
+#include <Efl_Ui.h>
+#include <Elementary.h>
+#include "efl_ui_grid_view.eo.h"
+
+static Ecore_Evas *ee;
+
+static Eina_Value
+_deliverty_cb(void *data, const Eina_Value value, const Eina_Future *dead_future EINA_UNUSED)
+{
+   Ecore_Evas_Selection_Buffer buffer = (intptr_t)data;
+   Eina_Content *content;
+
+   if (eina_value_type_get(&value) != EINA_VALUE_TYPE_CONTENT)
+     {
+        char *error = eina_value_to_string(&value);
+        printf("Value not a content, message: \"%s\"\n", error);
+        return EINA_VALUE_EMPTY;
+     }
+
+   content = eina_value_to_content(&value);
+   printf("Got Content of selection %d with type %s\n", buffer, eina_content_type_get(content));
+   if (!strncmp(eina_content_type_get(content), "text", strlen("text")))
+     {
+        printf("Content: %s\n", (char*)eina_content_data_get(content).mem);
+     }
+
+   return EINA_VALUE_EMPTY;
+}
+
+static void
+_selection_changed(Ecore_Evas *ee, unsigned int seat EINA_UNUSED, Ecore_Evas_Selection_Buffer selection)
+{
+   printf("Selection %d of %p has changed\n", selection, ee);
+}
+
+static void
+_request_selection(Ecore_Evas *ee, unsigned int seat EINA_UNUSED, Ecore_Evas_Selection_Buffer selection)
+{
+   const char *types[] = {eina_stringshare_add("text/plain"), eina_stringshare_add("text/plain;charset=utf-8")};
+   printf("Selection %d of %p has changed\n", selection, ee);
+   Eina_Future *future = ecore_evas_selection_get(ee, 0, selection, EINA_C_ARRAY_ITERATOR_NEW(types));
+   eina_future_then(future, _deliverty_cb, .data = ((void*)(intptr_t)selection));
+}
+
+static void
+_motion_cb(Ecore_Evas *ee, unsigned int seat EINA_UNUSED, Eina_Position2D p)
+{
+   printf("Drag and Drop has moved on the window %p (%d, %d)\n", ee, p.x, p.y);
+}
+
+static void
+_enter_state_change_cb(Ecore_Evas *ee, unsigned int seat EINA_UNUSED, Eina_Position2D p, Eina_Bool inside)
+{
+   if (inside)
+     printf("Drag and Drop has entered the window %p (%d, %d)\n", ee, p.x, p.y);
+   else
+     printf("Drag and Drop has left the window %p (%d, %d)\n", ee, p.x, p.y);
+}
+
+static void
+_drop_cb(Ecore_Evas *ee, unsigned int seat EINA_UNUSED, Eina_Position2D p, const char *action EINA_UNUSED)
+{
+   const char *types[] = {eina_stringshare_add("text/plain")};
+   printf("Drag and Drop has droped on the window %p (%d, %d)\n", ee, p.x, p.y);
+   Eina_Future *f = ecore_evas_selection_get(ee, 0, ECORE_EVAS_SELECTION_BUFFER_DRAG_AND_DROP_BUFFER, EINA_C_ARRAY_ITERATOR_NEW(types));
+   eina_future_then(f, _deliverty_cb, .data = ((void*)(intptr_t)ECORE_EVAS_SELECTION_BUFFER_DRAG_AND_DROP_BUFFER));
+}
+
+static void
+_efl_ui_terminated(Ecore_Evas *ee EINA_UNUSED, unsigned int seat EINA_UNUSED, void *data, Eina_Bool accepted EINA_UNUSED)
+{
+   efl_del(data);
+}
+
+static Eo*
+_start_dnd(Ecore_Evas *ee)
+{
+   Ecore_Evas *ee2;
+   Eina_Content *content = eina_content_new((Eina_Slice)EINA_SLICE_STR_FULL("This is sample content"), "text/plain");
+   Efl_Ui_Win *win;
+   Efl_Ui_Button *btn;
+
+   win = efl_add(EFL_UI_WIN_CLASS, efl_main_loop_get());
+   ee2 = ecore_evas_ecore_evas_get(evas_object_evas_get(win));
+
+   btn = efl_add(EFL_UI_BUTTON_CLASS, win);
+   efl_text_set(btn, "Test");
+   efl_content_set(win, btn);
+
+   evas_object_geometry_set(win, 0, 0, 100, 100);
+
+   ecore_evas_drag_start(ee, 0, content, ee2, "copy", _efl_ui_terminated, win);
+
+   return win;
+}
+
+static void
+_start_op(void *data, const Efl_Event *ev EINA_UNUSED)
+{
+   _start_dnd(data);
+}
+
+static Eina_Value
+_delete_cb(Eo *obj, void *data EINA_UNUSED, const Eina_Value value EINA_UNUSED)
+{
+   Ecore_Evas *ee ;
+   ee = ecore_evas_ecore_evas_get(evas_object_evas_get(obj));
+
+   ecore_evas_drag_cancel(ee, 0);
+
+   return EINA_VALUE_EMPTY;
+}
+
+static void
+_start_delayed_del_op(void *data, const Efl_Event *ev EINA_UNUSED)
+{
+   _start_dnd(data);
+   efl_future_then(ev->object, efl_loop_timeout(efl_main_loop_get(), 2.0), _delete_cb);
+}
+
+EAPI_MAIN void
+efl_main(void *data EINA_UNUSED, const Efl_Event *ev)
+{
+   Efl_Ui_Textbox *txt, *win, *bx, *btn;
+   Efl_Loop_Arguments *args = ev->info;
+   char *goal;
+
+   win = efl_add(EFL_UI_WIN_CLASS, efl_main_loop_get());
+   ee = ecore_evas_ecore_evas_get(evas_object_evas_get(win));
+
+   bx = efl_add(EFL_UI_BOX_CLASS, win);
+
+   txt = efl_add(EFL_UI_TEXTBOX_CLASS, win);
+   efl_text_set(txt, "Sample for CNP and DND interaction");
+   efl_pack_end(bx, txt);
+
+   btn = efl_add(EFL_UI_BUTTON_CLASS, win);
+   efl_gfx_hint_weight_set(btn, 1.0, 0.0);
+   efl_event_callback_add(btn, EFL_INPUT_EVENT_PRESSED, _start_op, ee);
+   efl_text_set(btn, "Start DND op");
+   efl_pack_end(bx, btn);
+
+   btn = efl_add(EFL_UI_BUTTON_CLASS, win);
+   efl_gfx_hint_weight_set(btn, 1.0, 0.0);
+   efl_event_callback_add(btn, EFL_INPUT_EVENT_PRESSED, _start_delayed_del_op, ee);
+   efl_text_set(btn, "Start DND op self destroy after 2 sec");
+   efl_pack_end(bx, btn);
+
+   efl_content_set(win, bx);
+   efl_gfx_entity_size_set(win, EINA_SIZE2D(320, 320));
+
+   goal = eina_array_data_get(args->argv, 1);
+
+   if (eina_streq(goal, "--monitor"))
+     {
+        ecore_evas_callback_selection_changed_set(ee, _selection_changed);
+        ecore_evas_callback_drop_drop_set(ee, _drop_cb);
+        ecore_evas_callback_drop_motion_set(ee, _motion_cb);
+        ecore_evas_callback_drop_state_changed_set(ee, _enter_state_change_cb);
+     }
+   else if (eina_streq(goal, "--show-selections"))
+     {
+        ecore_evas_callback_selection_changed_set(ee, _request_selection);
+     }
+   else if (eina_streq(goal, "--set-selection"))
+     {
+        if (eina_array_count(args->argv) < 3)
+          {
+             printf("Error, --set-selection only requires exactly 1 keyword (The selection to set).\n");
+             return;
+          }
+        char *selection = eina_array_data_get(args->argv, 2);
+        Eina_Content *content = eina_content_new((Eina_Slice)EINA_SLICE_STR_FULL(selection), "text/plain");
+        ecore_evas_selection_set(ee, 0, ECORE_EVAS_SELECTION_BUFFER_COPY_AND_PASTE_BUFFER, content);
+     }
+   else if (eina_streq(goal, "--show-owner"))
+     {
+        for (int i = 0; i < ECORE_EVAS_SELECTION_BUFFER_LAST; ++i)
+          {
+             printf("Selection buffer %d : %d\n", i, ecore_evas_selection_exists(ee, 0, i));
+          }
+     }
+   else
+     {
+        printf("Error, goal %s not found\n", goal);
+     }
+}
+EFL_MAIN()
diff --git a/src/tests/elementary/meson.build b/src/tests/elementary/meson.build
index 7f5fd03733..1b43da7064 100644
--- a/src/tests/elementary/meson.build
+++ b/src/tests/elementary/meson.build
@@ -187,6 +187,11 @@ efl_ui_compile_test = executable('efl_ui_compile_test',
   dependencies: [elementary, eio],
 )
 
+executable('efl_ui_window_cnp_dnd_slave',
+  'efl_ui_window_cnp_dnd_slave.c',
+  dependencies: [elementary],
+)
+
 test('elementary-suite', elementary_suite,
   env : test_env
 )