pits and exits

src/grid.rs

@@ -18,7 +18,7 @@ impl Grid {
                 CellPosition(x,y)
             );
             cell.inner.connect_clicked(app_state.clone());
-            cell.inner.connect_drag_drop(app_state.clone());
+            cell.inner.connect_dragging(app_state.clone());
             inner.attach(cell.as_ref(), x, y, 1, 1);
         }
         Grid { inner }
@@ -43,7 +43,6 @@ impl CellWidget {
             builder
                 .get_object("cell")
                 .unwrap();
-        eventbox.set_events(gdk::EventMask::BUTTON_PRESS_MASK);
 
         let header: gtk::Label =
             builder
@@ -55,6 +54,19 @@ impl CellWidget {
                 .get_object("position")
                 .unwrap();
         position.set_text(&format!("{}x{}", pos.0, pos.1));
+        // Drag-and-drop capacity
+        let targets = vec![];
+        eventbox.drag_source_set(
+            gdk::ModifierType::MODIFIER_MASK,
+            &targets,
+            gdk::DragAction::COPY,
+        );
+        eventbox.drag_dest_set(
+            gtk::DestDefaults::ALL,
+            &targets,
+            gdk::DragAction::COPY,
+        );
+
 
         let cell = CellWidget {
             eventbox,
@@ -80,32 +92,47 @@ impl CellWidget {
             });
     }
 
-    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,
-        );
+    pub fn connect_dragging(&self, state: AppState) {
 
-        //let app_state = state.clone();
-        self.eventbox.connect_drag_begin(|_,_| {
+        // TODO: start over.
+        // Use this for reference :
+        // https://python-gtk-3-tutorial.readthedocs.io/en/latest/drag_and_drop.html
+
+        // For starters, avoid using app_state and just copy the content of
+        // source cell inside dest cell.
+
+        let state1 = state.clone();
+        self.eventbox.connect_drag_begin(move |_,_| {
             println!("Lift...");
+            let mut state = state1.borrow_mut();
+            state.pending = Some(pawn::PawnData{name: "Dropped".to_string(), position: None});
             // Copy the current instance data
             // inside app_state.pending
         });
-        self.eventbox.connect_drag_end(|_,_| {
+        // TODO: Add failed signal to remove data
+        let state2 = state.clone();
+        let content = self.content.clone();
+        self.eventbox.connect_drag_end(move |_,_| {
             println!("Drop !");
+            let mut state = state2.borrow_mut();
+            if state.pending.is_none() {
+                content.set_text("Emptied");
+            }
+            state.pending = None;
             // Same as clicked, grab data
         });
-        // TODO: Add failed signal to remove data
-    }
+        let state3 = state.clone();
+        let content = self.content.clone();
+        self.eventbox.connect_drag_drop(move |_,drag_ctx,_,_,time| {
+            println!("Got ! {:?}", "");
+            let mut state = state3.borrow_mut();
+            if let Some(data) = state.pending.take() {
+                content.set_text(&data.name);
+            };
+            drag_ctx.drag_finish(true, true, time);
+            gtk::Inhibit(true)
+        });
+   }
 }
 
 impl AsRef<gtk::EventBox> for CellWidget {