feat: TableStyle manager (TABLESTYLE command + dialog)

- TABLESTYLE/TS command: LIST, NEW subcommands for managing table styles
- Table Style Manager dialog: style list with details panel showing
  name, margins, suppression flags, and row styles (data/header/title)
  with text style, height, and alignment per row type
- New / Delete buttons in the dialog

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/app/commands.rs

@@ -2085,6 +2085,59 @@ impl H7CAD {
             }
 
             // ── DimStyle management ───────────────────────────────────────
+            // TABLESTYLE — Table Style Manager.
+            cmd if cmd == "TABLESTYLE" || cmd == "TS" || cmd.starts_with("TABLESTYLE ") => {
+                use acadrust::objects::{TableStyle, ObjectType};
+                let raw_rest = cmd.split_once(' ').map(|(_, r)| r.trim()).unwrap_or("");
+                let parts: Vec<&str> = raw_rest.split_whitespace().collect();
+                let sub = parts.first().map(|s| s.to_uppercase()).unwrap_or_default();
+                match sub.as_str() {
+                    "" | "DIALOG" | "UI" => {
+                        return Task::done(Message::TableStyleDialogOpen);
+                    }
+                    "LIST" | "?" => {
+                        let doc = &self.tabs[i].scene.document;
+                        let styles: Vec<String> = doc.objects.values()
+                            .filter_map(|o| if let ObjectType::TableStyle(s) = o { Some(s) } else { None })
+                            .map(|s| format!("{}  (h_margin:{:.2} v_margin:{:.2})", s.name, s.horizontal_margin, s.vertical_margin))
+                            .collect();
+                        if styles.is_empty() {
+                            self.command_line.push_output("No table styles.");
+                        } else {
+                            self.command_line.push_output(&format!("TableStyles:\n  {}", styles.join("\n  ")));
+                        }
+                    }
+                    "NEW" | "N" => {
+                        let name = parts.get(1).copied().unwrap_or("").to_string();
+                        if name.is_empty() {
+                            self.command_line.push_error("Usage: TABLESTYLE NEW <name>");
+                        } else {
+                            let doc = &self.tabs[i].scene.document;
+                            let exists = doc.objects.values().any(|o| {
+                                matches!(o, ObjectType::TableStyle(s) if s.name.eq_ignore_ascii_case(&name))
+                            });
+                            if exists {
+                                self.command_line.push_error(&format!("TABLESTYLE: '{}' already exists.", name));
+                            } else {
+                                self.push_undo_snapshot(i, "TABLESTYLE NEW");
+                                let mut style = TableStyle::standard();
+                                style.name = name.clone();
+                                let nh = acadrust::Handle::new(self.tabs[i].scene.document.next_handle());
+                                style.handle = nh;
+                                self.tabs[i].scene.document.objects.insert(nh, ObjectType::TableStyle(style));
+                                self.tabs[i].dirty = true;
+                                self.command_line.push_output(&format!("TABLESTYLE: '{}' created.", name));
+                            }
+                        }
+                    }
+                    _ => {
+                        self.command_line.push_error(
+                            "Usage: TABLESTYLE [LIST|NEW <name>]"
+                        );
+                    }
+                }
+            }
+
             // MLSTYLE — Multiline Style Manager.
             // Usage:
             //   MLSTYLE                — open dialog

src/app/mod.rs

@@ -94,6 +94,10 @@ pub(super) struct H7CAD {
     mlstyle_open: bool,
     mlstyle_selected: String,
 
+    // ── TableStyle Dialog ─────────────────────────────────────────────────
+    tablestyle_open: bool,
+    tablestyle_selected: String,
+
     // ── DimStyle Dialog ───────────────────────────────────────────────────
     dimstyle_open: bool,
     /// Name of the style currently shown in the dialog.
@@ -339,6 +343,12 @@ pub enum Message {
     PlotStyleLoaded(Option<crate::io::plot_style::PlotStyleTable>),
     /// Clear the active plot style table.
     PlotStyleClear,
+    // ── TableStyle Dialog ─────────────────────────────────────────────────
+    TableStyleDialogOpen,
+    TableStyleDialogClose,
+    TableStyleDialogSelect(String),
+    TableStyleDialogNew,
+    TableStyleDialogDelete,
     // ── MLineStyle Dialog ─────────────────────────────────────────────────
     MlStyleDialogOpen,
     MlStyleDialogClose,
@@ -407,6 +417,9 @@ impl H7CAD {
             page_setup_scale: "Fit".to_string(),
             // Plot style
             active_plot_style: None,
+            // TableStyle dialog
+            tablestyle_open: false,
+            tablestyle_selected: "Standard".to_string(),
             // MLineStyle dialog
             mlstyle_open: false,
             mlstyle_selected: "Standard".to_string(),

src/app/update.rs

@@ -2126,6 +2126,73 @@ impl H7CAD {
                 Task::none()
             }
 
+            // ── TableStyle Dialog ─────────────────────────────────────────────
+            Message::TableStyleDialogOpen => {
+                use acadrust::objects::ObjectType;
+                let i = self.active_tab;
+                self.tablestyle_selected = self.tabs[i].scene.document.objects.values()
+                    .find_map(|o| if let ObjectType::TableStyle(s) = o { Some(s.name.clone()) } else { None })
+                    .unwrap_or_else(|| "Standard".to_string());
+                self.tablestyle_open = true;
+                Task::none()
+            }
+            Message::TableStyleDialogClose => {
+                self.tablestyle_open = false;
+                Task::none()
+            }
+            Message::TableStyleDialogSelect(name) => {
+                self.tablestyle_selected = name;
+                Task::none()
+            }
+
+            Message::TableStyleDialogNew => {
+                use acadrust::objects::ObjectType;
+                let i = self.active_tab;
+                let doc = &self.tabs[i].scene.document;
+                let mut n = 1u32;
+                let new_name = loop {
+                    let candidate = format!("TS{}", n);
+                    let taken = doc.objects.values().any(|o| {
+                        matches!(o, ObjectType::TableStyle(s) if s.name.eq_ignore_ascii_case(&candidate))
+                    });
+                    if !taken { break candidate; }
+                    n += 1;
+                };
+                self.push_undo_snapshot(i, "TABLESTYLE NEW");
+                let mut style = acadrust::objects::TableStyle::standard();
+                style.name = new_name.clone();
+                let nh = acadrust::Handle::new(self.tabs[i].scene.document.next_handle());
+                style.handle = nh;
+                self.tabs[i].scene.document.objects.insert(nh, ObjectType::TableStyle(style));
+                self.tablestyle_selected = new_name;
+                self.tabs[i].dirty = true;
+                Task::none()
+            }
+            Message::TableStyleDialogDelete => {
+                use acadrust::objects::ObjectType;
+                let i = self.active_tab;
+                let name = self.tablestyle_selected.clone();
+                if name.eq_ignore_ascii_case("Standard") {
+                    self.command_line.push_error("Cannot delete the Standard style.");
+                    return Task::none();
+                }
+                let handle = self.tabs[i].scene.document.objects.iter()
+                    .find_map(|(&h, o)| {
+                        if let ObjectType::TableStyle(s) = o {
+                            if s.name == name { Some(h) } else { None }
+                        } else { None }
+                    });
+                if let Some(h) = handle {
+                    self.push_undo_snapshot(i, "TABLESTYLE DEL");
+                    self.tabs[i].scene.document.objects.remove(&h);
+                    self.tablestyle_selected = self.tabs[i].scene.document.objects.values()
+                        .find_map(|o| if let ObjectType::TableStyle(s) = o { Some(s.name.clone()) } else { None })
+                        .unwrap_or_else(|| "Standard".to_string());
+                    self.tabs[i].dirty = true;
+                }
+                Task::none()
+            }
+
             // ── MLineStyle Dialog ─────────────────────────────────────────────
             Message::MlStyleDialogOpen => {
                 use acadrust::objects::ObjectType;

src/app/view.rs

@@ -227,6 +227,21 @@ impl H7CAD {
             iced::widget::Space::new().width(0).height(0).into()
         };
 
+        let tablestyle_layer: Element<'_, Message> = if self.tablestyle_open {
+            use acadrust::objects::ObjectType;
+            let tab = &self.tabs[self.active_tab];
+            let styles: Vec<String> = tab.scene.document.objects.values()
+                .filter_map(|o| if let ObjectType::TableStyle(s) = o { Some(s.name.clone()) } else { None })
+                .collect();
+            let selected_style = tab.scene.document.objects.values()
+                .find_map(|o| if let ObjectType::TableStyle(s) = o {
+                    if s.name == self.tablestyle_selected { Some(s) } else { None }
+                } else { None });
+            tablestyle_overlay(styles, &self.tablestyle_selected, selected_style)
+        } else {
+            iced::widget::Space::new().width(0).height(0).into()
+        };
+
         let mlstyle_layer: Element<'_, Message> = if self.mlstyle_open {
             use acadrust::objects::ObjectType;
             let tab = &self.tabs[self.active_tab];
@@ -256,7 +271,7 @@ impl H7CAD {
             iced::widget::Space::new().width(0).height(0).into()
         };
 
-        stack![main_ui, self.app_menu.view(), snap_layer, dropdown_layer, layout_ctx_layer, page_setup_layer, mlstyle_layer, dimstyle_layer].into()
+        stack![main_ui, self.app_menu.view(), snap_layer, dropdown_layer, layout_ctx_layer, page_setup_layer, tablestyle_layer, mlstyle_layer, dimstyle_layer].into()
     }
 
     pub fn subscription(&self) -> Subscription<Message> {
@@ -1037,6 +1052,152 @@ fn dimstyle_overlay<'a>(
     stack![catcher, positioned].into()
 }
 
+// ── TableStyle Dialog overlay ───────────────────────────────────────────────
+
+fn tablestyle_overlay<'a>(
+    styles: Vec<String>,
+    selected: &'a str,
+    selected_style: Option<&'a acadrust::objects::TableStyle>,
+) -> Element<'a, Message> {
+    use iced::Length::Shrink;
+
+    const PANEL_BG:  Color = Color { r: 0.15, g: 0.15, b: 0.15, a: 1.0 };
+    const BORDER:    Color = Color { r: 0.35, g: 0.35, b: 0.35, a: 1.0 };
+    const TEXT_COL:  Color = Color { r: 0.88, g: 0.88, b: 0.88, a: 1.0 };
+    const DIM_COL:   Color = Color { r: 0.55, g: 0.55, b: 0.55, a: 1.0 };
+    const ACCENT:    Color = Color { r: 0.25, g: 0.50, b: 0.85, a: 1.0 };
+    const ACTIVE_BG: Color = Color { r: 0.20, g: 0.40, b: 0.70, a: 1.0 };
+
+    let btn_style = |accent: bool| move |_: &Theme, status: button::Status| button::Style {
+        background: Some(Background::Color(match (accent, status) {
+            (true, button::Status::Hovered | button::Status::Pressed) =>
+                Color { r: 0.20, g: 0.42, b: 0.72, a: 1.0 },
+            (false, button::Status::Hovered | button::Status::Pressed) =>
+                Color { r: 0.28, g: 0.28, b: 0.28, a: 1.0 },
+            (true, _) => ACCENT,
+            _ => Color { r: 0.22, g: 0.22, b: 0.22, a: 1.0 },
+        })),
+        text_color: TEXT_COL,
+        border: Border { color: BORDER, width: 1.0, radius: 4.0.into() },
+        ..Default::default()
+    };
+
+    // Style list.
+    let style_items: Vec<Element<'_, Message>> = styles.iter().map(|name| {
+        let is_sel = name.as_str() == selected;
+        button(text(name.clone()).size(11).color(TEXT_COL))
+            .on_press(Message::TableStyleDialogSelect(name.clone()))
+            .style(move |_: &Theme, st| button::Style {
+                background: Some(Background::Color(match (is_sel, st) {
+                    (true, _) => ACTIVE_BG,
+                    (false, button::Status::Hovered | button::Status::Pressed) =>
+                        Color { r: 0.26, g: 0.26, b: 0.26, a: 1.0 },
+                    _ => Color::TRANSPARENT,
+                })),
+                text_color: TEXT_COL,
+                ..Default::default()
+            })
+            .padding([3, 8])
+            .width(Fill)
+            .into()
+    }).collect();
+
+    let style_panel = container(
+        column(style_items).spacing(2)
+    )
+    .style(|_: &Theme| container::Style {
+        background: Some(Background::Color(Color { r: 0.12, g: 0.12, b: 0.12, a: 1.0 })),
+        border: Border { color: BORDER, width: 1.0, radius: 4.0.into() },
+        ..Default::default()
+    })
+    .padding(4)
+    .width(160)
+    .height(240);
+
+    // Right panel: details.
+    let details: Element<'_, Message> = if let Some(s) = selected_style {
+        let info_row = |label: &'static str, val: String| -> Element<'_, Message> {
+            row![
+                text(label).size(11).color(DIM_COL).width(140),
+                text(val).size(11).color(TEXT_COL),
+            ].spacing(8).align_y(iced::Center).into()
+        };
+        let row_info = |row_label: &'static str, rs: &acadrust::objects::RowCellStyle| -> Element<'_, Message> {
+            column![
+                text(row_label).size(11).color(ACCENT),
+                info_row("  Text Style:", rs.text_style_name.clone()),
+                info_row("  Text Height:", format!("{:.4}", rs.text_height)),
+                info_row("  Alignment:", format!("{:?}", rs.alignment)),
+            ].spacing(3).into()
+        };
+        column![
+            info_row("Name:", s.name.clone()),
+            info_row("H Margin:", format!("{:.4}", s.horizontal_margin)),
+            info_row("V Margin:", format!("{:.4}", s.vertical_margin)),
+            info_row("Title Suppressed:", s.title_suppressed.to_string()),
+            info_row("Header Suppressed:", s.header_suppressed.to_string()),
+            row_info("Data Row:", &s.data_row_style),
+            row_info("Header Row:", &s.header_row_style),
+            row_info("Title Row:", &s.title_row_style),
+        ].spacing(5).into()
+    } else {
+        text("No style selected.").size(11).color(DIM_COL).into()
+    };
+
+    let right_panel = column![
+        details,
+        Space::new().height(Fill),
+        row![
+            button(text("New").size(11))
+                .on_press(Message::TableStyleDialogNew)
+                .style(btn_style(true))
+                .padding([5, 10]),
+            button(text("Delete").size(11))
+                .on_press(Message::TableStyleDialogDelete)
+                .style(btn_style(false))
+                .padding([5, 10]),
+        ].spacing(6),
+    ]
+    .spacing(10)
+    .width(280)
+    .height(240);
+
+    let panel = container(
+        column![
+            row![
+                text("Table Style Manager").size(13).color(TEXT_COL),
+                Space::new().width(Fill),
+                button(text("✕").size(12).color(DIM_COL))
+                    .on_press(Message::TableStyleDialogClose)
+                    .style(|_: &Theme, _| button::Style {
+                        background: Some(Background::Color(Color::TRANSPARENT)),
+                        text_color: DIM_COL,
+                        ..Default::default()
+                    })
+                    .padding([2, 6]),
+            ].align_y(iced::Center),
+            row![style_panel, right_panel].spacing(12).align_y(iced::Top),
+        ].spacing(10).padding(16)
+    )
+    .style(|_: &Theme| container::Style {
+        background: Some(Background::Color(PANEL_BG)),
+        border: Border { color: BORDER, width: 1.0, radius: 6.0.into() },
+        ..Default::default()
+    })
+    .width(Shrink);
+
+    let catcher = mouse_area(
+        container(iced::widget::Space::new().width(Fill).height(Fill))
+    ).on_press(Message::TableStyleDialogClose);
+
+    let positioned = container(panel)
+        .width(Fill).height(Fill)
+        .align_x(iced::Alignment::Center)
+        .align_y(iced::Alignment::Center);
+
+    stack![catcher, positioned].into()
+}
+
 // ── MLineStyle Dialog overlay ───────────────────────────────────────────────
 
 fn mlstyle_overlay<'a>(