perf(settings): coalesce refreshes and cache resize previews

shell/ferese-settings/src/panel_preview.rs

@@ -4,7 +4,7 @@ use ferese_panel::layout::{Placement, Resolution};
 use ferese_panel::{Availability, Group, Item, ItemId, ItemKind, Panel, Representation, Zone};
 use ferese_theme::panel::{Sample, Spacing, frame};
 
-use crate::{App, Element, Message, panel_controls, visuals};
+use crate::{App, Element, Message, visuals};
 
 const SAMPLE_AVAILABILITY: Availability = Availability {
     tray: true,
@@ -104,25 +104,7 @@ impl App {
     }
 
     pub(super) fn preview_panel(&self) -> Result<Panel, String> {
-        let panels = match self.draft.item("panels") {
-            Some(panels) => panels.clone(),
-            None => {
-                let crate::store::Edit::Set(_, panels) = panel_controls::initialize(&self.draft)?
-                else {
-                    unreachable!()
-                };
-                panels
-            }
-        };
-        serde_json::from_value::<Vec<Panel>>(panels)
-            .map_err(|error| error.to_string())?
-            .into_iter()
-            .next()
-            .map(|mut panel| {
-                panel.consolidate_clock_controls();
-                panel
-            })
-            .ok_or_else(|| "No panel configured.".into())
+        self.draft.preview_panel()
     }
 
     fn panel_preview_frame(&self, panel: Panel) -> Element<'_, Message> {
@@ -628,6 +610,7 @@ mod tests {
                 "/unused/preview-test.kdl".into(),
                 crate::store::Snapshot::parse(String::new()),
                 None,
+                None,
             ),
         )
         .0;
@@ -764,6 +747,7 @@ mod tests {
                 "/unused/preview-centering.kdl".into(),
                 crate::store::Snapshot::parse(String::new()),
                 None,
+                None,
             ),
         )
         .0;
@@ -873,6 +857,7 @@ mod tests {
                 "/unused/alignment.kdl".into(),
                 crate::store::Snapshot::parse(String::new()),
                 None,
+                None,
             ),
         )
         .0;
@@ -980,6 +965,7 @@ mod tests {
                 "/unused/hover.kdl".into(),
                 crate::store::Snapshot::parse(String::new()),
                 None,
+                None,
             ),
         )
         .0;
@@ -1083,6 +1069,7 @@ mod tests {
                 "/unused/preview-test.kdl".into(),
                 crate::store::Snapshot::parse("panel main { group-surface unknown; }".into()),
                 None,
+                None,
             ),
         )
         .0;