ui: simply hide post button if buffer is empty

Fixes: 8464a1d22c ("disable post button if draft buffer empty")
Signed-off-by: William Casarin <jb55@jb55.com>

src/ui/note/post.rs

@@ -208,10 +208,15 @@ impl<'a> PostView<'a> {
                             }
 
                             ui.with_layout(egui::Layout::right_to_left(egui::Align::BOTTOM), |ui| {
+                                if self.draft.buffer.is_empty() {
+                                    // Don't render button if our buffer is empty
+                                    return None;
+                                }
+
                                 if ui
                                     .add_sized(
                                         [91.0, 32.0],
-                                        post_button(!self.draft.buffer.is_empty()),
+                                        egui::Button::new("Post now")
                                     )
                                     .clicked()
                                 {
@@ -239,23 +244,6 @@ impl<'a> PostView<'a> {
     }
 }
 
-fn post_button(interactive: bool) -> impl egui::Widget {
-    move |ui: &mut egui::Ui| {
-        let button = egui::Button::new("Post now");
-        if interactive {
-            ui.add(button)
-        } else {
-            ui.add(
-                button
-                    .sense(egui::Sense::hover())
-                    .fill(ui.visuals().widgets.noninteractive.bg_fill)
-                    .stroke(ui.visuals().widgets.noninteractive.bg_stroke),
-            )
-            .on_hover_cursor(egui::CursorIcon::NotAllowed)
-        }
-    }
-}
-
 mod preview {
     use super::*;