working on drag-n-drop

src/grid.rs

@@ -17,7 +17,8 @@ impl Grid {
             let cell = grid::Cell::new(
                 CellPosition(x,y)
             );
-            cell.connect_clicked(app_state.clone());
+            cell.inner.connect_clicked(app_state.clone());
+            cell.inner.connect_drag_drop(app_state.clone());
             inner.attach(cell.as_ref(), x, y, 1, 1);
         }
         Grid { inner }
@@ -37,30 +38,13 @@ impl CellWidget {
         let cell_src = include_str!("../res/cell.glade");
         let builder = gtk::Builder::new_from_string(&cell_src);
 
+        // Set up reactivity on buttons
         let eventbox: gtk::EventBox =
             builder
                 .get_object("cell")
                 .unwrap();
         eventbox.set_events(gdk::EventMask::BUTTON_PRESS_MASK);
 
-        // Drag-and-drop capacity
-        let targets = vec![];
-        eventbox.drag_dest_set(
-            gtk::DestDefaults::ALL,
-            &targets,
-            gdk::DragAction::COPY,
-        );
-        eventbox.drag_source_set(
-            gdk::ModifierType::MODIFIER_MASK,
-            &targets,
-            gdk::DragAction::COPY,
-        );
-        eventbox.connect_drag_begin(|_,_| {
-            println!("Lift...");
-        });
-        eventbox.connect_drag_end(|_,_| {
-            println!("Drop !");
-        });
         let header: gtk::Label =
             builder
                 .get_object("header")
@@ -95,6 +79,33 @@ impl CellWidget {
                 gtk::Inhibit(true)
             });
     }
+
+    pub fn connect_drag_drop(&self, _state: AppState) {
+        // Drag-and-drop capacity
+        let targets = vec![];
+        self.eventbox.drag_dest_set(
+            gtk::DestDefaults::ALL,
+            &targets,
+            gdk::DragAction::COPY,
+        );
+        self.eventbox.drag_source_set(
+            gdk::ModifierType::MODIFIER_MASK,
+            &targets,
+            gdk::DragAction::COPY,
+        );
+
+        //let app_state = state.clone();
+        self.eventbox.connect_drag_begin(|_,_| {
+            println!("Lift...");
+            // Copy the current instance data
+            // inside app_state.pending
+        });
+        self.eventbox.connect_drag_end(|_,_| {
+            println!("Drop !");
+            // Same as clicked, grab data
+        });
+        // TODO: Add failed signal to remove data
+    }
 }
 
 impl AsRef<gtk::EventBox> for CellWidget {
@@ -116,10 +127,6 @@ impl Cell {
             position
         }
     }
-
-    fn connect_clicked(&self, state: AppState) {
-        self.inner.connect_clicked(state);
-    }
 }
 
 impl AsRef<gtk::EventBox> for Cell {