add radio button to set max rows to usize::MAX

dont reset max width points value if clicked when already selected

Author: dmackdev

examples/demo/src/apps/wrapping.rs

@@ -9,17 +9,19 @@ use super::Show;
 
 pub struct WrappingExample {
     value: Value,
-    state: JsonTreeWrapping,
+    wrap: JsonTreeWrapping,
+    use_maximum_max_rows: bool,
 }
 
 impl WrappingExample {
     pub fn new(value: Value) -> Self {
         Self {
             value,
-            state: JsonTreeWrapping {
+            wrap: JsonTreeWrapping {
                 max_rows: 1,
                 max_width: JsonTreeMaxWidth::UiAvailableWidth,
             },
+            use_maximum_max_rows: false,
         }
     }
 }
@@ -34,43 +36,62 @@ impl Show for WrappingExample {
         ui.add_space(10.0);
 
         ui.label(egui::RichText::new("Max Rows:").monospace());
-        ui.add(
-            DragValue::new(&mut self.state.max_rows)
-                .speed(0.1)
-                .range(1..=5),
-        );
+        ui.horizontal(|ui| {
+            if ui
+                .radio_value(&mut self.use_maximum_max_rows, false, "Custom")
+                .changed()
+            {
+                self.wrap.max_rows = 1;
+            }
+
+            if !self.use_maximum_max_rows {
+                ui.add(
+                    DragValue::new(&mut self.wrap.max_rows)
+                        .speed(0.1)
+                        .range(1..=10),
+                );
+            }
+        });
+
+        if ui
+            .radio_value(&mut self.use_maximum_max_rows, true, "usize::MAX")
+            .clicked()
+        {
+            self.wrap.max_rows = usize::MAX;
+        }
 
         ui.label(egui::RichText::new("Max Width:").monospace());
         ui.horizontal(|ui| {
             if ui
                 .radio(
-                    matches!(self.state.max_width, JsonTreeMaxWidth::Pt(_)),
+                    matches!(self.wrap.max_width, JsonTreeMaxWidth::Pt(_)),
                     "Points",
                 )
                 .clicked()
+                && !matches!(self.wrap.max_width, JsonTreeMaxWidth::Pt(_))
             {
-                self.state.max_width = JsonTreeMaxWidth::Pt(100.0);
+                self.wrap.max_width = JsonTreeMaxWidth::Pt(100.0);
             }
-            if let JsonTreeMaxWidth::Pt(ref mut pts) = &mut self.state.max_width {
+            if let JsonTreeMaxWidth::Pt(ref mut pts) = &mut self.wrap.max_width {
                 ui.add(DragValue::new(pts).speed(10.0).range(100.0..=10000.0));
             }
         });
 
         if ui
             .radio(
-                matches!(self.state.max_width, JsonTreeMaxWidth::UiAvailableWidth),
+                matches!(self.wrap.max_width, JsonTreeMaxWidth::UiAvailableWidth),
                 "Available Width",
             )
             .clicked()
         {
-            self.state.max_width = JsonTreeMaxWidth::UiAvailableWidth;
+            self.wrap.max_width = JsonTreeMaxWidth::UiAvailableWidth;
         }
 
         JsonTree::new(self.title(), &self.value)
             .style(JsonTreeStyle::new().wrap(JsonTreeWrappingParams {
-                value_no_parent: self.state,
-                value_expanded_parent: self.state,
-                value_collapsed_root: self.state,
+                value_no_parent: self.wrap,
+                value_expanded_parent: self.wrap,
+                value_collapsed_root: self.wrap,
             }))
             .default_expand(DefaultExpand::All)
             .show(ui);