Simplify file_dialog example

examples/file_dialog/src/main.rs

@@ -60,40 +60,7 @@ impl eframe::App for MyApp {
             }
         });
 
-        self.detect_files_being_dropped(ctx);
+        preview_files_being_dropped(ctx);
-    }
-}
-
-impl MyApp {
-    fn detect_files_being_dropped(&mut self, ctx: &egui::Context) {
-        use egui::*;
-
-        // Preview hovering files:
-        if !ctx.input().raw.hovered_files.is_empty() {
-            let mut text = "Dropping files:\n".to_owned();
-            for file in &ctx.input().raw.hovered_files {
-                if let Some(path) = &file.path {
-                    text += &format!("\n{}", path.display());
-                } else if !file.mime.is_empty() {
-                    text += &format!("\n{}", file.mime);
-                } else {
-                    text += "\n???";
-                }
-            }
-
-            let painter =
-                ctx.layer_painter(LayerId::new(Order::Foreground, Id::new("file_drop_target")));
-
-            let screen_rect = ctx.input().screen_rect();
-            painter.rect_filled(screen_rect, 0.0, Color32::from_black_alpha(192));
-            painter.text(
-                screen_rect.center(),
-                Align2::CENTER_CENTER,
-                text,
-                TextStyle::Heading.resolve(&ctx.style()),
-                Color32::WHITE,
-            );
-        }
 
         // Collect dropped files:
         if !ctx.input().raw.dropped_files.is_empty() {
@@ -101,3 +68,34 @@ impl MyApp {
         }
     }
 }
+
+/// Preview hovering files:
+fn preview_files_being_dropped(ctx: &egui::Context) {
+    use egui::*;
+
+    if !ctx.input().raw.hovered_files.is_empty() {
+        let mut text = "Dropping files:\n".to_owned();
+        for file in &ctx.input().raw.hovered_files {
+            if let Some(path) = &file.path {
+                text += &format!("\n{}", path.display());
+            } else if !file.mime.is_empty() {
+                text += &format!("\n{}", file.mime);
+            } else {
+                text += "\n???";
+            }
+        }
+
+        let painter =
+            ctx.layer_painter(LayerId::new(Order::Foreground, Id::new("file_drop_target")));
+
+        let screen_rect = ctx.input().screen_rect();
+        painter.rect_filled(screen_rect, 0.0, Color32::from_black_alpha(192));
+        painter.text(
+            screen_rect.center(),
+            Align2::CENTER_CENTER,
+            text,
+            TextStyle::Heading.resolve(&ctx.style()),
+            Color32::WHITE,
+        );
+    }
+}