makes content moving work

res/cell.glade

@@ -19,11 +19,12 @@
         <property name="shadow_type">in</property>
         <child>
           <object class="GtkBox" id="box">
-            <property name="width_request">128</property>
+            <property name="width_request">96</property>
-            <property name="height_request">128</property>
+            <property name="height_request">96</property>
             <property name="visible">True</property>
             <property name="can_focus">False</property>
             <property name="orientation">vertical</property>
+            <property name="homogeneous">True</property>
             <child>
               <object class="GtkLabel" id="header">
                 <property name="visible">True</property>
@@ -43,14 +44,17 @@
               </packing>
             </child>
             <child>
-              <object class="GtkLabel" id="content">
+              <object class="GtkButton" id="desc_btn">
-                <property name="visible">True</property>
+                <property name="label" translatable="yes">Desc. </property>
-                <property name="can_focus">False</property>
+                <property name="can_focus">True</property>
-                <property name="label" translatable="yes">Occupancy
+                <property name="receives_default">False</property>
-     Status</property>
+                <property name="halign">center</property>
+                <property name="valign">end</property>
+                <property name="margin_bottom">5</property>
+                <property name="relief">none</property>
               </object>
               <packing>
-                <property name="expand">True</property>
+                <property name="expand">False</property>
                 <property name="fill">True</property>
                 <property name="position">1</property>
               </packing>
@@ -59,7 +63,6 @@
         </child>
         <child type="label">
           <object class="GtkLabel" id="position">
-            <property name="visible">True</property>
             <property name="can_focus">False</property>
             <property name="label" translatable="yes">_x_</property>
             <attributes>

res/main.glade

@@ -71,51 +71,6 @@
                     <property name="valign">center</property>
                     <property name="hexpand">True</property>
                     <property name="vexpand">True</property>
-                    <child>
-                      <object class="GtkEventBox">
-                        <property name="visible">True</property>
-                        <property name="can_focus">False</property>
-                        <signal name="drag-begin" handler="drag_begin" swapped="no"/>
-                        <child>
-                          <object class="GtkLabel">
-                            <property name="visible">True</property>
-                            <property name="can_focus">False</property>
-                            <property name="label" translatable="yes">label</property>
-                            <signal name="drag-begin" handler="drag_begin" swapped="no"/>
-                          </object>
-                        </child>
-                      </object>
-                      <packing>
-                        <property name="left_attach">1</property>
-                        <property name="top_attach">0</property>
-                      </packing>
-                    </child>
-                    <child>
-                      <object class="GtkEventBox">
-                        <property name="visible">True</property>
-                        <property name="can_focus">False</property>
-                        <child>
-                          <object class="GtkLabel">
-                            <property name="visible">True</property>
-                            <property name="can_focus">False</property>
-                            <property name="label" translatable="yes">label</property>
-                          </object>
-                        </child>
-                      </object>
-                      <packing>
-                        <property name="left_attach">1</property>
-                        <property name="top_attach">1</property>
-                      </packing>
-                    </child>
-                    <child>
-                      <placeholder/>
-                    </child>
-                    <child>
-                      <placeholder/>
-                    </child>
-                    <child>
-                      <placeholder/>
-                    </child>
                     <child>
                       <placeholder/>
                     </child>

src/grid.rs

@@ -18,7 +18,7 @@ impl Grid {
                 CellPosition(x,y)
             );
             cell.inner.connect_clicked(app_state.clone());
-            cell.inner.connect_dragging(app_state.clone());
+            cell.inner.desc_btn.set_visible(false);
             inner.attach(cell.as_ref(), x, y, 1, 1);
         }
         Grid { inner }
@@ -30,13 +30,13 @@ struct CellWidget {
     eventbox: gtk::EventBox,
     position: gtk::Label,
     header : gtk::Label,
-    content: gtk::Label,
+    desc_btn: gtk::Button,
 }
 
 impl CellWidget {
     fn new(pos: CellPosition, header_text: &str) -> Self {
-        let cell_src = include_str!("../res/cell.glade");
+        let cell_src = "/home/artus/Projets/rust/playmat/res/cell.glade";
-        let builder = gtk::Builder::new_from_string(&cell_src);
+        let builder = gtk::Builder::new_from_file(cell_src);
 
         // Set up reactivity on buttons
         let eventbox: gtk::EventBox =
@@ -54,85 +54,93 @@ impl CellWidget {
                 .get_object("position")
                 .unwrap();
         position.set_text(&format!("{}x{}", pos.0, pos.1));
+
         // Drag-and-drop capacity
-        let targets = vec![];
+        let desc_btn: gtk::Button =
+            builder
+                .get_object("desc_btn")
+                .unwrap();
+        desc_btn.set_visible(false);
+        // The data to be send
+        let targets = vec![
+            gtk::TargetEntry::new("text/plain", gtk::TargetFlags::SAME_APP, 0)
+        ];
         eventbox.drag_source_set(
             gdk::ModifierType::MODIFIER_MASK,
             &targets,
-            gdk::DragAction::COPY,
+            gdk::DragAction::MOVE,
         );
+        let h = header.clone();
+        // Send data to the drop site
+        eventbox.connect_drag_data_get(
+            move |_,_,data,info,time| {
+                println!("Send...");
+                if let Some(to_send) = h.get_text() {
+                    data.set_text(&to_send);
+                }
+            }
+        );
+        let h = header.clone();
+        let b = desc_btn.clone();
+        // Empty the cell on successfull move
+        eventbox.connect_drag_data_delete(
+            move |w,drag| {
+                println!("Cleaning... {:#?}", (&drag.drag_drop_succeeded()));
+                h.set_text("");
+                b.set_visible(false);
+            }
+        );
+
         eventbox.drag_dest_set(
             gtk::DestDefaults::ALL,
             &targets,
-            gdk::DragAction::COPY,
+            gdk::DragAction::MOVE,
+        );
+        // Retrieve data from the source
+        let h = header.clone();
+        let b = desc_btn.clone();
+        eventbox.connect_drag_data_received(
+            move |_,drag,_,_,data,info,time| {
+                let del =
+                    // Check if cell is not already occupied
+                    if !(h.get_text().unwrap().as_str() == "") {
+                        // TODO: Find what to do to abort, since
+                        // DragContext methods don't seem to work...
+                        println!("Overriding !!");
+                        false
+                    } else {
+                        println!("Dropped !");
+                        if let Some(text) = data.get_text() {
+                            h.set_text(&text);
+                            b.set_visible(true);
+                        } else {
+                            eprintln!("No data !");
+                        }
+                        true
+                    };
+            }
         );
-
-
         let cell = CellWidget {
             eventbox,
             position,
             header,
-            content: builder.get_object("content").unwrap(),
+            desc_btn
         };
         cell
     }
 
     pub fn connect_clicked(&self, state: AppState) {
         let header = self.header.clone();
-        let content = self.content.clone();
         self.eventbox
             .connect_button_press_event(move |_,_| {
                 let mut state = state.borrow_mut();
                 if let Some(data) = state.pending.take() {
                     println!("{:?}", data);
-                    content.set_text(&data.name);
+                    header.set_text(&data.name);
                 };
-                header.set_text("Is Clicked.");
                 gtk::Inhibit(true)
             });
     }
-
-    pub fn connect_dragging(&self, state: AppState) {
-
-        // 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
-        });
-        // 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
-        });
-        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 {

src/main.rs

@@ -61,8 +61,8 @@ impl App {
         self.inner.connect_activate(
             move |app| {
                 println!("Activate App");
-                let main_src = include_str!("../res/main.glade");
+                let main_src = "/home/artus/Projets/rust/playmat/res/main.glade";
-                let builder = gtk::Builder::new_from_string(main_src);
+                let builder = gtk::Builder::new_from_file(main_src);
                 let win: gtk::ApplicationWindow =
                     builder
                         .get_object("app")

src/pawn.rs

@@ -39,8 +39,8 @@ pub struct Pawn {
 
 impl Pawn {
     pub fn new<S: Into<String>>(name: S) -> Self {
-        let pawn_src = include_str!("../res/pawn.glade");
+        let pawn_src = "/home/artus/Projets/rust/playmat/res/pawn.glade";
-        let builder = gtk::Builder::new_from_string(pawn_src);
+        let builder = gtk::Builder::new_from_file(pawn_src);
         let name = name.into();
         let label: gtk::Label =
             builder