Move button finding to view

eek/eek-gtk-keyboard.c

@@ -498,7 +498,7 @@ on_button_pressed (struct squeek_button *button,
 
     struct button_place place = {
         .button = button,
-        .row = eek_keyboard_get_row(view, button),
+        .row = squeek_view_get_row(view, button),
     };
     if (!place.row) {
         return;

eek/eek-keyboard.c

@@ -294,26 +294,6 @@ struct GetRowData {
     struct squeek_key *needle;
 };
 
-void find_button_in_row(struct squeek_row *row, gpointer user_data) {
-    struct GetRowData *data = user_data;
-    if (data->row) {
-        return;
-    }
-    if (squeek_row_contains(row, data->button)) {
-        data->row = row;
-    }
-}
-
-struct squeek_row *eek_keyboard_get_row(struct squeek_view *view,
-                                     struct squeek_button *button) {
-    struct GetRowData data = {
-        .button = button,
-        .row = NULL,
-    };
-    squeek_view_foreach(view, find_button_in_row, &data);
-    return data.row;
-}
-
 void find_key_in_row(struct squeek_row *row, gpointer user_data) {
     struct GetRowData *data = user_data;
     if (data->button) {

eek/eek-keyboard.h

@@ -61,8 +61,6 @@ struct _LevelKeyboard {
 };
 typedef struct _LevelKeyboard LevelKeyboard;
 
-struct squeek_row *eek_keyboard_get_row(struct squeek_view *view,
-                                      struct squeek_button *button);
 struct squeek_button *eek_keyboard_find_button_by_name(LevelKeyboard *keyboard,
                                       const gchar        *name);
 

src/layout.h

@@ -68,6 +68,8 @@ void squeek_view_foreach(struct squeek_view*,
                             RowCallback   callback,
                             gpointer      user_data);
 
+struct squeek_row *squeek_view_get_row(struct squeek_view *view,
+                                       struct squeek_button *button);
 
 void squeek_row_place_buttons(struct squeek_row *row, LevelKeyboard *keyboard);
 #endif

src/layout.rs

@@ -185,19 +185,6 @@ pub mod c {
         let row = unsafe { &mut *row };
         row.bounds = Some(bounds);
     }
-
-    #[no_mangle]
-    pub extern "C"
-    fn squeek_row_contains(
-        row: *mut ::layout::Row,
-        needle: *const ::layout::Button,
-    ) -> u32 {
-        let row = unsafe { &mut *row };
-        row.buttons.iter().position(
-            // TODO: wrap Button properly in Rc; this comparison is unreliable
-            |button| button.as_ref() as *const ::layout::Button == needle
-        ).is_some() as u32
-    }
     
     #[no_mangle]
     pub extern "C"
@@ -413,12 +400,54 @@ pub mod c {
                 None => ptr::null_mut(),
             }
         }
+        
+        fn squeek_row_contains(row: &Row, needle: *const Button) -> bool {
+            row.buttons.iter().position(
+                // TODO: wrap Button properly in Rc; this comparison is unreliable
+                |button| button.as_ref() as *const ::layout::Button == needle
+            ).is_some()
+        }
+        
+        #[no_mangle]
+        pub extern "C"
+        fn squeek_view_get_row(
+            view: *mut View,
+            needle: *const ::layout::Button,
+        ) -> *mut Row {
+            let view = unsafe { &mut *view };
+            let result = view.rows.iter_mut().find(|row| {
+                squeek_row_contains(row, needle)
+            });
+            match result {
+                Some(row) => row.as_mut() as *mut Row,
+                None => ptr::null_mut(),
+            }
+        }
+        
+        #[cfg(test)]
+        mod test {
+            use super::*;
+
+            #[test]
+            fn row_has_button() {
+                let mut row = Row::new(0);
+                let button = squeek_row_create_button(&mut row as *mut Row, 0, 0);
+                assert_eq!(squeek_row_contains(&row, button), true);
+                let shared_button = squeek_row_create_button_with_state(
+                    &mut row as *mut Row,
+                    button
+                );
+                assert_eq!(squeek_row_contains(&row, shared_button), true);
+                let row = Row::new(0);
+                assert_eq!(squeek_row_contains(&row, button), false);
+            }
+        }
     }
     
     #[cfg(test)]
     mod test {
         use super::*;
-        
+
         #[test]
         fn button_has_key() {
             let button = squeek_button_new(0, 0);
@@ -431,17 +460,6 @@ pub mod c {
             let shared_button = squeek_button_new_with_state(button);
             assert_eq!(squeek_button_has_key(shared_button, state), 1);
         }
-        
-        #[test]
-        fn row_has_button() {
-            let row = squeek_row_new(0);
-            let button = squeek_row_create_button(row, 0, 0);
-            assert_eq!(squeek_row_contains(row, button), 1);
-            let shared_button = squeek_row_create_button_with_state(row, button);
-            assert_eq!(squeek_row_contains(row, shared_button), 1);
-            let row = squeek_row_new(0);
-            assert_eq!(squeek_row_contains(row, button), 0);
-        }
     }
 }