i18n: dialogs follow the interface language; Spanish dialogs

ROADMAP.md

@@ -93,14 +93,17 @@ The ribbon is translated into Japanese, Simplified Chinese, Korean, Brazilian Po
 and German (266–268 labels each, ~12% of ~2,200 strings; merged 10-10 in #31, #104, #82, German
 added 10-11), the
 interface follows the system language, and CJK, Thai and Hebrew text falls back to system fonts
-(#38). Dialogs, menus and messages are English; formulas and number formats are en-US only.
+(#38). Dialogs and message boxes follow the interface language (Spanish translated in full;
+other languages fall back to English per string); context menus, task panes and status messages
+are still English. Spanish also has Spanish formula entry (`;` separators, decimal comma, 10 local
+function names); number formats are en-US only.
 Localized German formulas and numbers are in PR #163. Detail: [localization-parity.md](docs/localization-parity.md).
 
 | Language | Code | Status | UI strings |
 |---|---|---|---|
 | English | en | full (source language) | 100% |
 | Simplified Chinese | zh-Hans | menus only | ~12% |
-| Spanish | es | none | 0% |
+| Spanish | es | ribbon and dialogs | ~35% |
 | Hindi | hi | none | 0% |
 | Arabic | ar | none (no RTL layout, no shaping) | 0% |
 | French | fr | none | 0% |

contributors/people.toml

@@ -61,6 +61,9 @@ sync_github_name = true
 real_name = "James Symes"
 sync_github_name = true
 
+[people.manucarcor]
+real_name = "Manuel Carmona"
+display_name = "manucarcor"
 
 [people.Silvertree2010]
 display_name = "Netter"

crates/ui-egui/src/i18n.rs

@@ -117,7 +117,12 @@ impl Language {
     /// A label that needs two translations (Home's text "Orientation" vs Page Layout's print
     /// "Orientation") is keyed `context|label`: English shows only the part after the `|`.
     pub fn tr(self, text: &str) -> &str {
-        let translated = match self {
+        self.translation(text).unwrap_or_else(|| text.rsplit_once('|').map_or(text, |(_, label)| label))
+    }
+
+    /// The catalog's entry for an interface label, if this language has one (`None` for English).
+    pub fn translation(self, text: &str) -> Option<&'static str> {
+        match self {
             Self::En => None,
             Self::Es => es::translate(text),
             Self::Ja => JAPANESE.iter().find(|(english, _)| *english == text).map(|(_, translated)| *translated),

crates/ui-egui/src/widgets.rs

@@ -280,13 +280,15 @@ pub fn message_box(app: &mut SheetApp, ctx: &egui::Context) {
             ui.painter().circle_filled(r.center(), 16.0, Color32::from_rgb(0xF2, 0xC3, 0x2E));
             ui.painter().text(r.center(), Align2::CENTER_CENTER, "!", theme::ui_bold(20.0), Color32::WHITE);
             ui.vertical(|ui| {
-                ui.label(egui::RichText::new(title).strong());
-                ui.add(egui::Label::new(msg).wrap());
+                ui.label(egui::RichText::new(tr(ui, &title)).strong());
+                ui.add(egui::Label::new(tr(ui, &msg)).wrap());
             });
         });
         ui.add_space(8.0);
         ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
-            if ui.button("  OK  ").clicked() || ui.input(|i| i.key_pressed(egui::Key::Enter) || i.key_pressed(egui::Key::Escape)) {
+            if ui.button(format!("  {}  ", tr(ui, "OK"))).clicked()
+                || ui.input(|i| i.key_pressed(egui::Key::Enter) || i.key_pressed(egui::Key::Escape))
+            {
                 close = true;
             }
         });

crates/ui-egui/tests/interaction.rs

@@ -539,6 +539,35 @@ fn dialogs_open_and_close() {
     }
 }
 
+#[test]
+fn dialogs_draw_in_the_interface_language() {
+    // Dialogs followed the interface language only in the formula language; their chrome was English.
+    let mut h = harness(blank());
+    h.state_mut().ui.language = gridcraft_ui_egui::i18n::Language::Es;
+    h.state_mut().open_dialog("find", json!({"replace": true}));
+    h.run_steps(3);
+    for label in ["Buscar y reemplazar", "Reemplazar con:", "Reemplazar todos", "Buscar siguiente", "Coincidir mayúsculas y minúsculas"] {
+        h.get_by_label(label);
+    }
+    assert!(h.query_by_label("Find Next").is_none(), "no English left in Find and Replace");
+    key(&mut h, Key::Escape, Modifiers::NONE);
+
+    h.state_mut().open_dialog("formatCells", json!({"tab": "Alignment"}));
+    h.run_steps(3);
+    for label in ["Formato de celdas", "Número", "Alineación", "Relleno", "Proteger", "Reducir hasta ajustar"] {
+        h.get_by_label(label);
+    }
+    // OK and Cancel carry padding in the label.
+    assert!(h.query_by_label_contains("Aceptar").is_some() && h.query_by_label_contains("Cancelar").is_some());
+    key(&mut h, Key::Escape, Modifiers::NONE);
+
+    h.state_mut().open_dialog("insertCells", json!({}));
+    h.run_steps(3);
+    h.get_by_label("Desplazar las celdas hacia abajo").click();
+    h.run_steps(2);
+    assert_eq!(h.state().dialog.as_ref().and_then(|d| d.values.get("shift")).and_then(|v| v.as_str()), Some("down"), "options keep their values");
+}
+
 #[test]
 fn data_analysis_dialog_runs_a_tool_and_asks_before_overwriting() {
     let mut s = blank();

docs/localization-parity.md

@@ -18,6 +18,12 @@ right-to-left sheets and full complex-script support. Part of
   dialog, every dialog title and the shared OK/Cancel buttons; the other dialogs, menus,
   context menus, task panes, status messages, command labels and function descriptions are still
   English literals. Untranslated labels fall back to English.
+- **Dialogs follow the interface language** (2026-10-12): `dialogs.rs` keeps titles, tabs, field
+  labels and options English (they are ids for the control channel) and translates them when drawn,
+  as do message boxes. Spanish covers every dialog string, checked by
+  `dialogs::tests::spanish_translates_every_dialog_string`; other languages fall back to English
+  per string until their catalogs grow. Spanish now has 764 entries (~35%) and Spanish formula
+  entry (`docs/formula-input.md`).
 - **About 2,200 user-visible strings** in all (heuristic source scan: ~1,700 UI and command
   strings plus ~500 function descriptions), so each shipped language covers **~12%** (measured
   count / estimated total).
@@ -45,7 +51,7 @@ separators, number/date formats, machine translation with agent review, and scri
 |---|---|---|---|---|---|---|---|
 | English | en | ~2,200 / ~2,200 (100%, source) | yes | Latin: yes | yes | full | — |
 | Simplified Chinese (Mandarin) | zh-Hans | 266 (~12%) | no | CJK system-font fallback (#38); IME unverified; PDF can't export | no | menus only | 8–13 h |
-| Spanish | es | 0 (0%) | no | Latin: yes | no | none | 6–10 h |
+| Spanish | es | 764 (~35%) | dialogs: yes; tooltips partly; help no | Latin: yes | no | ribbon and dialogs | 4–7 h |
 | Hindi | hi | 0 (0%) | no | Devanagari: **no shaping** | no | none | 12–18 h |
 | Arabic | ar | 0 (0%) | no | **no shaping, no RTL UI**; Sheet Right-to-Left mirrors the grid (#146) | no | none | 25–35 h |
 | French | fr | 0 (0%) | no | Latin: yes | no | none | 6–10 h |