Label text update methods

scripts/sao-ui/src/widgets/button.rs

@@ -48,6 +48,12 @@ impl RoundButton {
             icon,
         }
     }
+
+    pub fn set_text(&mut self, text: &str) {
+        if let Some(icon) = self.icon.as_mut() {
+            icon.set_text(text);
+        }
+    }
 }
 
 impl Button for RoundButton {

scripts/sao-ui/src/widgets/text.rs

@@ -128,6 +128,14 @@ impl Icon {
             offset: Vec2::ZERO,
         }
     }
+
+    pub fn set_text(&mut self, text: &str) {
+        if self.text.text != text {
+            self.text.text = text.to_string();
+            self.layout = None;
+            self.dirty = true;
+        }
+    }
 }
 
 impl Widget for Icon {