modular-ui: use boxes where it makes sense

src/gui/modular/button.rs

@@ -172,7 +172,7 @@ pub struct ButtonData {
 }
 
 pub fn modular_button_init(button: &mut ModularControl, data: &ButtonData) {
-    button.state = Some(ModularData::Button(data.clone()));
+    button.state = Some(ModularData::Button(Box::new(data.clone())));
     button.on_press = Some(modular_button_dn);
     button.on_release = Some(modular_button_up);
     button.on_scroll = Some(modular_button_scroll);

src/gui/modular/label.rs

@@ -98,7 +98,7 @@ pub fn modular_label_init(label: &mut ModularControl, content: &LabelContent) {
     };
 
     if let Some(state) = state {
-        label.state = Some(ModularData::Label(state));
+        label.state = Some(ModularData::Label(Box::new(state)));
         label.on_update = Some(label_update);
     }
 }
@@ -107,7 +107,7 @@ pub(super) fn label_update(control: &mut ModularControl, _: &mut (), app: &mut A
     let ModularData::Label(data) = control.state.as_mut().unwrap() else {
         panic!("Label control has no state");
     };
-    match data {
+    match data.as_mut() {
         LabelData::Battery {
             device,
             low_threshold,

src/gui/modular/mod.rs

@@ -70,7 +70,7 @@ pub enum ModularElement {
         bg_color: Arc<str>,
         text: Arc<str>,
         #[serde(flatten)]
-        data: ButtonData,
+        data: Box<ButtonData>,
     },
     /// Convenience type to save you from having to create a bunch of labels
     BatteryList {
@@ -90,7 +90,7 @@ pub enum ModularElement {
         bg_color: Arc<str>,
         layout: ListLayout,
         #[serde(flatten)]
-        template: OverlayListTemplate,
+        template: Box<OverlayListTemplate>,
     },
 }
 
@@ -107,8 +107,8 @@ pub enum ListLayout {
 }
 
 pub enum ModularData {
-    Label(LabelData),
-    Button(ButtonData),
+    Label(Box<LabelData>),
+    Button(Box<ButtonData>),
 }
 
 pub fn modular_canvas(