chore: fix input auto-grow height

crates/ui/src/input/state.rs

@@ -220,6 +220,7 @@ pub struct InputState {
     pub(super) rows: usize,
     pub(super) min_rows: usize,
     pub(super) max_rows: Option<usize>,
+    pub(super) auto_grow: bool,
     pub(super) pattern: Option<regex::Regex>,
     pub(super) validate: Validate,
     pub(crate) scroll_handle: ScrollHandle,
@@ -284,6 +285,7 @@ impl InputState {
             rows: 3,
             min_rows: 3,
             max_rows: None,
+            auto_grow: false,
             height: None,
             last_layout: None,
             last_bounds: None,
@@ -489,6 +491,12 @@ impl InputState {
         self
     }
 
+    /// Set the auto-grow mode for the multi-line Textarea.
+    pub fn auto_grow(mut self) -> Self {
+        self.auto_grow = true;
+        self
+    }
+
     /// Set the text of the input field.
     ///
     /// And the selection_range will be reset to 0..0.
@@ -1010,25 +1018,6 @@ impl InputState {
         });
     }
 
-    fn check_to_auto_grow(&mut self, _: &mut Window, cx: &mut Context<Self>) {
-        if !self.is_multi_line() {
-            return;
-        }
-
-        let Some(max_rows) = self.max_rows else {
-            return;
-        };
-
-        let changed_rows = ((self.scroll_size.height - self.input_bounds.size.height)
-            / self.last_line_height) as isize;
-
-        self.rows = (self.rows as isize + changed_rows)
-            .clamp(self.min_rows as isize, max_rows as isize)
-            .max(0) as usize;
-
-        cx.notify();
-    }
-
     pub(super) fn clean(&mut self, window: &mut Window, cx: &mut Context<Self>) {
         self.replace_text("", window, cx);
     }
@@ -1591,6 +1580,10 @@ impl EntityInputHandler for InputState {
         self.marked_range = None;
     }
 
+    /// Replace text in range.
+    ///
+    /// - If the new text is invalid, it will not be replaced.
+    /// - If `range_utf16` is not provided, the current selected range will be used.
     fn replace_text_in_range(
         &mut self,
         range_utf16: Option<Range<usize>>,
@@ -1628,7 +1621,6 @@ impl EntityInputHandler for InputState {
 
         self.update_preferred_x_offset(cx);
         self.update_scroll_offset(None, cx);
-        self.check_to_auto_grow(window, cx);
 
         cx.emit(InputEvent::Change(self.unmask_value()));
         cx.notify();