ecore_cocoa: allow to override termination sequence

src/lib/ecore_cocoa/Ecore_Cocoa.h

@@ -80,6 +80,17 @@ typedef struct _Ecore_Cocoa_Event_Window_Unfocused Ecore_Cocoa_Event_Window_Unfo
  */
 typedef struct _Ecore_Cocoa_Event_Window_Destroy Ecore_Cocoa_Event_Window_Destroy;
 
+/**
+ * @typedef Ecore_Cocoa_Terminate_Cb
+ * Callback called when a delete request is sent to the application.
+ * Such function must return EINA_TRUE for the application to terminate,
+ * and EINA_FALSE to ignore application termination.
+ * It is typically called by a CMD+Q signal.
+ * @param sender The NSApplication instance to be terminated
+ * @since 1.19
+ */
+typedef Eina_Bool (*Ecore_Cocoa_Terminate_Cb)(Ecore_Cocoa_Object *sender);
+
 /**
  * @typedef Ecore_Cocoa_Cursor
  * Values of the Cocoa cursors handled by Ecore_Cocoa
@@ -527,6 +538,17 @@ EAPI void ecore_cocoa_window_cursor_set(Ecore_Cocoa_Window *win,
 EAPI void ecore_cocoa_window_cursor_show(Ecore_Cocoa_Window *win, Eina_Bool show);
    EINA_ARG_NONNULL(1);
 
+/**
+ * Overrides the default behaviour in response to an application delete
+ * request. When an application receives a delete request (i.e. CMD+Q)
+ * the termination callback will be called and its result will determine
+ * whether the application should terminate or not
+ * @param cb The custom termination callback to set
+ * @see Ecore_Cocoa_Terminate_Cb
+ * @since 1.19
+ */
+EAPI void ecore_cocoa_terminate_cb_set(Ecore_Cocoa_Terminate_Cb cb)
+   EINA_ARG_NONNULL(1);
 
 
 /*

src/lib/ecore_cocoa/ecore_cocoa.m

@@ -387,3 +387,10 @@ ecore_cocoa_titlebar_height_get(void)
      }
    return height;
 }
+
+EAPI void
+ecore_cocoa_terminate_cb_set(Ecore_Cocoa_Terminate_Cb cb)
+{
+   EINA_SAFETY_ON_NULL_RETURN(cb);
+   [NSApp setTerminateCb: cb];
+}

src/lib/ecore_cocoa/ecore_cocoa_app.h

@@ -8,6 +8,7 @@
 {
    Ecore_Timer  *_timer;
    NSDate       *_expiration;
+   Ecore_Cocoa_Terminate_Cb _terminate_cb;
 }
 
 - (NSDate *)eventExpirationDate;
@@ -17,6 +18,8 @@
 - (void)sendEvent:(NSEvent *)anEvent;
 - (id)init;
 - (void)internalUpdate;
+- (void)setTerminateCb:(Ecore_Cocoa_Terminate_Cb)cb;
+- (Ecore_Cocoa_Terminate_Cb)terminateCb;
 
 - (void) pauseNSRunLoopMonitoring;
 - (void) resumeNSRunLoopMonitoring;

src/lib/ecore_cocoa/ecore_cocoa_app.m

@@ -112,6 +112,16 @@ _ecore_cocoa_run_loop_cb(void *data EINA_UNUSED)
    ecore_timer_thaw(_timer);
 }
 
+- (void)setTerminateCb:(Ecore_Cocoa_Terminate_Cb)cb
+{
+   _terminate_cb = cb;
+}
+
+- (Ecore_Cocoa_Terminate_Cb)terminateCb
+{
+   return _terminate_cb;
+}
+
 @end
 
 
@@ -131,8 +141,19 @@ static Ecore_Cocoa_AppDelegate *_appDelegate = nil;
 - (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *) EINA_UNUSED sender
 {
    // XXX This should be alterable (by Elm_Window policy)
-   return YES;
+   return NO;
+}
+
+- (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender
+{
+   NSApplicationTerminateReply status = NSTerminateNow;
+   const Ecore_Cocoa_Terminate_Cb cb = [(Ecore_Cocoa_Application *)sender terminateCb];
+   if (cb)
+     {
+         const Eina_Bool ret = cb(sender);
+         if (!ret) status = NSTerminateCancel;
+     }
+   return status;
 }
 
 @end
-