Add Memory::any_popup_open() (#2464)

* Added the "any_popup_open()" function

* Updated CHANGELOG.md

* add PR link to changelog

Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>

CHANGELOG.md

@@ -8,6 +8,7 @@ NOTE: [`epaint`](crates/epaint/CHANGELOG.md), [`eframe`](crates/eframe/CHANGELOG
 ### Added ⭐
 * `Event::Key` now has a `repeat` field that is set to `true` if the event was the result of a key-repeat ([#2435](https://github.com/emilk/egui/pull/2435)).
 * Add `Slider::drag_value_speed`, which lets you ask for finer precision when dragging the slider value rather than the actual slider.
+* Add `Memory::any_popup_open`, which returns true if any popup is currently open ([#2464](https://github.com/emilk/egui/pull/2464)).
 
 ### Fixed 🐛
 * Expose `TextEdit`'s multiline flag to AccessKit ([#2448](https://github.com/emilk/egui/pull/2448)).

crates/egui/src/memory.rs

@@ -479,6 +479,10 @@ impl Memory {
         self.popup == Some(popup_id) || self.everything_is_visible()
     }
 
+    pub fn any_popup_open(&self) -> bool {
+        self.popup.is_some() || self.everything_is_visible()
+    }
+
     pub fn open_popup(&mut self, popup_id: Id) {
         self.popup = Some(popup_id);
     }