fix(mleader): use lineweight choices

Replace the raw sentinel input with typed CAD lineweight options so special
values display correctly and unsupported values cannot be entered.

Refs #522

src/app/mod.rs

@@ -630,7 +630,6 @@ pub(super) struct OpenCADStudio {
     mls_line_color: String,
     mls_text_color: String,
     mls_description: String,
-    mls_line_weight: String,
     mls_align_space: String,
     mls_block_color: String,
     mls_block_rotation: String,
@@ -2336,6 +2335,7 @@ pub enum Message {
         field: &'static str,
         value: String,
     },
+    MLeaderStyleLineWeightChanged(LineWeight),
     /// Set an Option<Handle> field (linetype / arrowhead / text style / block)
     /// from a dropdown of record names ("None" clears it).
     MLeaderStyleSetHandle {
@@ -2677,7 +2677,6 @@ impl OpenCADStudio {
             mls_line_color: String::new(),
             mls_text_color: String::new(),
             mls_description: String::new(),
-            mls_line_weight: String::new(),
             mls_align_space: String::new(),
             mls_block_color: String::new(),
             mls_block_rotation: String::new(),

src/app/update/mod.rs

@@ -4809,6 +4809,13 @@ impl OpenCADStudio {
             Message::MLeaderStyleSetEnum { field, value } => {
                 self.on_mleader_style_set_enum(field, value)
             }
+            Message::MLeaderStyleLineWeightChanged(line_weight) => {
+                let i = self.active_tab;
+                if let Some(s) = self.mleaderstyle_mut(i) {
+                    s.line_weight = line_weight;
+                }
+                Task::none()
+            }
             Message::MLeaderStyleSetHandle { field, value } => {
                 self.on_mleader_style_set_handle(field, value)
             }

src/app/update/style.rs

@@ -178,7 +178,6 @@ impl OpenCADStudio {
             .map(|c| c.to_string())
             .unwrap_or_default();
         self.mls_description = s.description.clone();
-        self.mls_line_weight = s.line_weight.value().to_string();
         self.mls_align_space = format!("{:.4}", s.align_space);
         self.mls_block_color = s
             .block_content_color
@@ -699,7 +698,6 @@ pub(super) fn on_text_style_dialog_open(&mut self) -> Task<Message> {
                     "line_color" => self.mls_line_color = value,
                     "text_color" => self.mls_text_color = value,
                     "description" => self.mls_description = value,
-                    "line_weight" => self.mls_line_weight = value,
                     "align_space" => self.mls_align_space = value,
                     "block_color" => self.mls_block_color = value,
                     "block_rotation" => self.mls_block_rotation = value,
@@ -863,7 +861,6 @@ pub(super) fn on_text_style_dialog_open(&mut self) -> Task<Message> {
                     self.mls_text_color.parse::<i16>().ok(),
                 );
                 let desc = self.mls_description.clone();
-                let lw = self.mls_line_weight.parse::<i16>().ok();
                 let align = self.mls_align_space.parse::<f64>().ok();
                 let bclr = self.mls_block_color.parse::<i16>().ok();
                 let brot = self.mls_block_rotation.parse::<f64>().ok();
@@ -906,9 +903,6 @@ pub(super) fn on_text_style_dialog_open(&mut self) -> Task<Message> {
                         s.text_color = acadrust::types::Color::from_index(v);
                     }
                     s.description = desc;
-                    if let Some(v) = lw {
-                        s.line_weight = acadrust::types::LineWeight::from_value(v);
-                    }
                     if let Some(v) = align {
                         s.align_space = v;
                     }

src/app/view/modal.rs

@@ -393,7 +393,6 @@ impl OpenCADStudio {
                         line_color: &self.mls_line_color,
                         text_color: &self.mls_text_color,
                         description: &self.mls_description,
-                        line_weight: &self.mls_line_weight,
                         align_space: &self.mls_align_space,
                         block_color: &self.mls_block_color,
                         block_rotation: &self.mls_block_rotation,

src/ui/style/mleaderstyle.rs

@@ -83,7 +83,6 @@ pub struct MLeaderStyleView<'a> {
     pub line_color: &'a str,
     pub text_color: &'a str,
     pub description: &'a str,
-    pub line_weight: &'a str,
     pub align_space: &'a str,
     pub block_color: &'a str,
     pub block_rotation: &'a str,
@@ -176,6 +175,23 @@ fn enum_row<'a>(
     .into()
 }
 
+fn lineweight_row<'a>(selected: acadrust::types::LineWeight) -> Element<'a, Message> {
+    let selected = crate::ui::properties::LwItem(selected);
+    row![
+        text("Line weight:").size(11).color(DIM).width(150),
+        pick_list(
+            crate::ui::properties::lw_options(),
+            Some(selected),
+            |item| Message::MLeaderStyleLineWeightChanged(item.0)
+        )
+        .text_size(11)
+        .width(190),
+    ]
+    .spacing(8)
+    .align_y(iced::Center)
+    .into()
+}
+
 /// The 11 horizontal text-attachment variants (debug names).
 const ATTACH_OPTS: [&str; 11] = [
     "TopOfTopLine",
@@ -245,7 +261,7 @@ pub fn view_window<'a>(v: MLeaderStyleView<'a>) -> Element<'a, Message> {
                     "path_type"
                 ),
                 color_row("Line color (ACI):", v.line_color, "line_color", v.color_open == Some("line_color")),
-                num_row("Line weight:", "-2", v.line_weight, "line_weight"),
+                lineweight_row(s.line_weight),
                 handle_row(
                     "Line type:",
                     v.lt_opts.clone(),