switch to Rc<RefCell<...>> for widget storage

src/core/text/build.rs

@@ -75,7 +75,7 @@ impl TextBuilderOutput for TextOutput {
             builder.attrs.line_height,
         ));
         let hint = builder.hint.get(ui);
-        let font_system = &mut ui.data.text.font_system;
+        let font_system = &mut ui.data.text.borrow_mut().font_system;
         buf.set_text(font_system, &builder.content, &Attrs::new(), SHAPING, None);
         let mut text = Text {
             content: builder.content.into(),
@@ -101,8 +101,9 @@ impl TextBuilderOutput for TextEditOutput {
         let mut text = TextEdit::new(
             TextView::new(buf, builder.attrs, builder.hint.get(ui)),
             builder.output.single_line,
+            ui.data.text.clone(),
         );
-        let font_system = &mut ui.data.text.font_system;
+        let font_system = &mut ui.data.text.borrow_mut().font_system;
         text.buf
             .set_text(font_system, &builder.content, &Attrs::new(), SHAPING, None);
         builder.attrs.apply(font_system, &mut text.buf, None);

src/core/text/edit.rs

@@ -1,7 +1,7 @@
 use std::ops::{Deref, DerefMut};
 
 use crate::prelude::*;
-use cosmic_text::{Affinity, Attrs, Cursor, FontSystem, LayoutRun, Motion};
+use cosmic_text::{Affinity, Attrs, Cursor, LayoutRun, Motion};
 use unicode_segmentation::UnicodeSegmentation;
 use winit::{
     event::KeyEvent,
@@ -13,17 +13,19 @@ pub struct TextEdit {
     selection: TextSelection,
     history: Vec<(String, TextSelection)>,
     double_hit: Option<Cursor>,
+    data: TextData,
     pub single_line: bool,
 }
 
 impl TextEdit {
-    pub fn new(view: TextView, single_line: bool) -> Self {
+    pub fn new(view: TextView, single_line: bool, data: TextData) -> Self {
         Self {
             view,
             selection: Default::default(),
             history: Default::default(),
             double_hit: None,
             single_line,
+            data,
         }
     }
     pub fn select_content(&self, start: Cursor, end: Cursor) -> String {
@@ -42,6 +44,369 @@ impl TextEdit {
             str
         }
     }
+
+    pub fn take(&mut self) -> String {
+        let text = self
+            .buf
+            .lines
+            .drain(..)
+            .map(|l| l.into_text())
+            .collect::<Vec<_>>()
+            .join("\n");
+        self.set("");
+        text
+    }
+
+    pub fn set(&mut self, text: &str) {
+        let text = self.string(text);
+        self.view.buf.set_text(
+            &mut self.data.borrow_mut().font_system,
+            &text,
+            &Attrs::new(),
+            SHAPING,
+            None,
+        );
+        self.selection.clear();
+    }
+
+    pub fn motion(&mut self, motion: Motion, select: bool) {
+        if let TextSelection::Pos(cursor) = self.selection
+            && let Some(new) = self.buf_motion(cursor, motion)
+        {
+            self.selection = if select {
+                TextSelection::Span {
+                    start: cursor,
+                    end: new,
+                }
+            } else {
+                TextSelection::Pos(new)
+            };
+        } else if let TextSelection::Span { start, end } = self.selection {
+            if select {
+                if let Some(cursor) = self.buf_motion(end, motion) {
+                    self.selection = TextSelection::Span { start, end: cursor };
+                }
+            } else {
+                let (start, end) = sort_cursors(start, end);
+                match motion {
+                    Motion::Left | Motion::LeftWord => self.selection = TextSelection::Pos(start),
+                    Motion::Right | Motion::RightWord => self.selection = TextSelection::Pos(end),
+                    _ => {
+                        if let Some(cursor) = self.buf_motion(end, motion) {
+                            self.selection = TextSelection::Pos(cursor);
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    pub fn replace(&mut self, len: usize, text: &str) {
+        let text = self.string(text);
+        for _ in 0..len {
+            self.delete(false);
+        }
+        self.insert_inner(&text, false);
+    }
+
+    fn string(&self, text: &str) -> String {
+        if self.single_line {
+            text.replace('\n', "")
+        } else {
+            text.to_string()
+        }
+    }
+
+    pub fn insert(&mut self, text: &str) {
+        let text = self.string(text);
+        let mut lines = text.split('\n');
+        let Some(first) = lines.next() else {
+            return;
+        };
+        self.insert_inner(first, true);
+        for line in lines {
+            self.newline();
+            self.insert_inner(line, true);
+        }
+    }
+
+    pub fn clear_span(&mut self) -> bool {
+        if let TextSelection::Span { start, end } = self.selection {
+            self.delete_between(start, end);
+            let (start, _) = sort_cursors(start, end);
+            self.selection = TextSelection::Pos(start);
+            true
+        } else {
+            false
+        }
+    }
+
+    pub fn delete_between(&mut self, start: Cursor, end: Cursor) {
+        let lines = &mut self.view.buf.lines;
+        let (start, end) = sort_cursors(start, end);
+        if start.line == end.line {
+            let line = &mut lines[start.line];
+            let text = line.text();
+            let text = text[..start.index].to_string() + &text[end.index..];
+            edit_line(line, text);
+        } else {
+            // start
+            let start_text = lines[start.line].text()[..start.index].to_string();
+            let end_text = &lines[end.line].text()[end.index..];
+            let text = start_text + end_text;
+            edit_line(&mut lines[start.line], text);
+        }
+        // between
+        let range = (start.line + 1)..=end.line;
+        if !range.is_empty() {
+            lines.splice(range, None);
+        }
+    }
+
+    fn insert_inner(&mut self, text: &str, mov: bool) {
+        self.clear_span();
+        if let TextSelection::Pos(cursor) = self.selection {
+            let line = &mut self.view.buf.lines[cursor.line];
+            let mut line_text = line.text().to_string();
+            line_text.insert_str(cursor.index, text);
+            edit_line(line, line_text);
+            if mov {
+                for _ in 0..text.chars().count() {
+                    self.motion(Motion::Right, false);
+                }
+            }
+        }
+    }
+
+    pub fn newline(&mut self) {
+        if self.single_line {
+            return;
+        }
+        self.clear_span();
+        if let TextSelection::Pos(cursor) = &mut self.selection {
+            let lines = &mut self.view.buf.lines;
+            let line = &mut lines[cursor.line];
+            let new = line.split_off(cursor.index);
+            cursor.line += 1;
+            lines.insert(cursor.line, new);
+            cursor.index = 0;
+        }
+    }
+
+    pub fn backspace(&mut self, word: bool) {
+        if !self.clear_span()
+            && let TextSelection::Pos(cursor) = &mut self.selection
+            && (cursor.index != 0 || cursor.line != 0)
+        {
+            self.motion(if word { Motion::LeftWord } else { Motion::Left }, false);
+            self.delete(word);
+        }
+    }
+
+    pub fn delete(&mut self, word: bool) {
+        if self.clear_span() {
+            return;
+        }
+        if let TextSelection::Pos(cursor) = &mut self.selection {
+            if word {
+                let start = *cursor;
+                if let Some(end) = self.buf_motion(start, Motion::RightWord) {
+                    self.delete_between(start, end);
+                }
+            } else {
+                let lines = &mut self.view.buf.lines;
+                let line = &mut lines[cursor.line];
+                if cursor.index == line.text().len() {
+                    if cursor.line == lines.len() - 1 {
+                        return;
+                    }
+                    let add = lines.remove(cursor.line + 1).into_text();
+                    let line = &mut lines[cursor.line];
+                    let mut cur = line.text().to_string();
+                    cur.push_str(&add);
+                    edit_line(line, cur);
+                } else {
+                    let mut text = line.text().to_string();
+                    text.remove(cursor.index);
+                    edit_line(line, text);
+                }
+            }
+        }
+    }
+
+    fn buf_motion(&mut self, cursor: Cursor, motion: Motion) -> Option<Cursor> {
+        self.view
+            .buf
+            .cursor_motion(
+                &mut self.data.borrow_mut().font_system,
+                cursor,
+                None,
+                motion,
+            )
+            .map(|r| r.0)
+    }
+
+    pub fn select_word_at(&mut self, cursor: Cursor) {
+        if let (Some(start), Some(end)) = (
+            self.buf_motion(cursor, Motion::LeftWord),
+            self.buf_motion(cursor, Motion::RightWord),
+        ) {
+            self.selection = TextSelection::Span { start, end };
+        }
+    }
+
+    pub fn select_line_at(&mut self, cursor: Cursor) {
+        let end = self.buf.lines[cursor.line].text().len();
+        self.selection = TextSelection::Span {
+            start: Cursor::new(cursor.line, 0),
+            end: Cursor::new(cursor.line, end),
+        }
+    }
+
+    pub fn select(&mut self, pos: Vec2, size: Vec2, drag: bool, recent: bool) {
+        let pos = pos - self.region().top_left().to_abs(size);
+        let hit = self.buf.hit(pos.x, pos.y);
+        let sel = &mut self.selection;
+        match sel {
+            TextSelection::None => {
+                if !drag && let Some(hit) = hit {
+                    *sel = TextSelection::Pos(hit)
+                }
+            }
+            TextSelection::Pos(pos) => match (hit, drag) {
+                (None, false) => *sel = TextSelection::None,
+                (None, true) => (),
+                (Some(hit), false) => {
+                    if recent && hit == *pos {
+                        self.double_hit = Some(hit);
+                        return self.select_word_at(hit);
+                    } else {
+                        *pos = hit
+                    }
+                }
+                (Some(end), true) => *sel = TextSelection::Span { start: *pos, end },
+            },
+            TextSelection::Span { start, end } => match (hit, drag) {
+                (None, false) => *sel = TextSelection::None,
+                (None, true) => *sel = TextSelection::Pos(*start),
+                (Some(hit), false) => {
+                    if recent
+                        && let Some(double) = self.double_hit
+                        && double == hit
+                    {
+                        return self.select_line_at(hit);
+                    } else {
+                        *sel = TextSelection::Pos(hit)
+                    }
+                }
+                (Some(hit), true) => *end = hit,
+            },
+        }
+        if let TextSelection::Span { start, end } = sel
+            && start == end
+        {
+            *sel = TextSelection::Pos(*start);
+        }
+    }
+
+    pub fn deselect(&mut self) {
+        self.selection = TextSelection::None;
+    }
+
+    pub fn apply_event(&mut self, event: &KeyEvent, modifiers: &Modifiers) -> TextInputResult {
+        let old = (self.content(), self.selection);
+        let mut undo = false;
+        let res = self.apply_event_inner(event, modifiers, &mut undo);
+        if undo && let Some((old, selection)) = self.history.pop() {
+            self.set(&old);
+            self.selection = selection;
+        } else if self.content() != old.0 {
+            self.history.push(old);
+        }
+        res
+    }
+
+    fn apply_event_inner(
+        &mut self,
+        event: &KeyEvent,
+        modifiers: &Modifiers,
+        undo: &mut bool,
+    ) -> TextInputResult {
+        match &event.logical_key {
+            Key::Named(named) => match named {
+                NamedKey::Backspace => self.backspace(modifiers.control),
+                NamedKey::Delete => self.delete(modifiers.control),
+                NamedKey::Space => self.insert(" "),
+                NamedKey::Enter => {
+                    if modifiers.shift {
+                        self.newline();
+                    } else {
+                        return TextInputResult::Submit;
+                    }
+                }
+                NamedKey::ArrowRight => {
+                    if modifiers.control {
+                        self.motion(Motion::RightWord, modifiers.shift)
+                    } else {
+                        self.motion(Motion::Right, modifiers.shift)
+                    }
+                }
+                NamedKey::ArrowLeft => {
+                    if modifiers.control {
+                        self.motion(Motion::LeftWord, modifiers.shift)
+                    } else {
+                        self.motion(Motion::Left, modifiers.shift)
+                    }
+                }
+                NamedKey::ArrowUp => self.motion(Motion::Up, modifiers.shift),
+                NamedKey::ArrowDown => self.motion(Motion::Down, modifiers.shift),
+                NamedKey::Escape => {
+                    self.deselect();
+                    return TextInputResult::Unfocus;
+                }
+                _ => return TextInputResult::Unused,
+            },
+            Key::Character(text) => {
+                if modifiers.control {
+                    match text.as_str() {
+                        "v" => return TextInputResult::Paste,
+                        "c" => {
+                            if let TextSelection::Span { start, end } = self.selection {
+                                let content = self.select_content(start, end);
+                                return TextInputResult::Copy(content);
+                            }
+                        }
+                        "x" => {
+                            if let TextSelection::Span { start, end } = self.selection {
+                                let content = self.select_content(start, end);
+                                self.clear_span();
+                                return TextInputResult::Copy(content);
+                            }
+                        }
+                        "a" => {
+                            if !self.buf.lines[0].text().is_empty() || self.buf.lines.len() > 1 {
+                                let lines = &self.buf.lines;
+                                let last_line = lines.len() - 1;
+                                let last_idx = lines[last_line].text().len();
+                                self.selection = TextSelection::Span {
+                                    start: Cursor::new(0, 0),
+                                    end: Cursor::new(last_line, last_idx),
+                                };
+                            }
+                        }
+                        "z" => {
+                            *undo = true;
+                        }
+                        _ => self.insert(text),
+                    }
+                } else {
+                    self.insert(text);
+                }
+            }
+            _ => return TextInputResult::Unused,
+        }
+        TextInputResult::Used
+    }
 }
 
 impl Widget for TextEdit {
@@ -175,373 +540,6 @@ fn cursor_pos(cursor: Cursor, buf: &TextBuffer) -> Option<Vec2> {
     prev
 }
 
-pub struct TextEditCtx<'a> {
-    pub text: &'a mut TextEdit,
-    pub font_system: &'a mut FontSystem,
-}
-
-impl<'a> TextEditCtx<'a> {
-    pub fn take(&mut self) -> String {
-        let text = self
-            .text
-            .buf
-            .lines
-            .drain(..)
-            .map(|l| l.into_text())
-            .collect::<Vec<_>>()
-            .join("\n");
-        self.text
-            .buf
-            .set_text(self.font_system, "", &Attrs::new(), SHAPING, None);
-        self.text.selection.clear();
-        text
-    }
-
-    pub fn set(&mut self, text: &str) {
-        let text = self.string(text);
-        self.text
-            .buf
-            .set_text(self.font_system, &text, &Attrs::new(), SHAPING, None);
-        self.text.selection.clear();
-    }
-
-    pub fn motion(&mut self, motion: Motion, select: bool) {
-        if let TextSelection::Pos(cursor) = self.text.selection
-            && let Some(new) = self.buf_motion(cursor, motion)
-        {
-            if select {
-                self.text.selection = TextSelection::Span {
-                    start: cursor,
-                    end: new,
-                };
-            } else {
-                self.text.selection = TextSelection::Pos(new);
-            }
-        } else if let TextSelection::Span { start, end } = self.text.selection {
-            if select {
-                if let Some(cursor) = self.buf_motion(end, motion) {
-                    self.text.selection = TextSelection::Span { start, end: cursor };
-                }
-            } else {
-                let (start, end) = sort_cursors(start, end);
-                let sel = &mut self.text.selection;
-                match motion {
-                    Motion::Left | Motion::LeftWord => *sel = TextSelection::Pos(start),
-                    Motion::Right | Motion::RightWord => *sel = TextSelection::Pos(end),
-                    _ => {
-                        if let Some(cursor) = self.buf_motion(end, motion) {
-                            self.text.selection = TextSelection::Pos(cursor);
-                        }
-                    }
-                }
-            }
-        }
-    }
-
-    pub fn replace(&mut self, len: usize, text: &str) {
-        let text = self.string(text);
-        for _ in 0..len {
-            self.delete(false);
-        }
-        self.insert_inner(&text, false);
-    }
-
-    fn string(&self, text: &str) -> String {
-        if self.text.single_line {
-            text.replace('\n', "")
-        } else {
-            text.to_string()
-        }
-    }
-
-    pub fn insert(&mut self, text: &str) {
-        let text = self.string(text);
-        let mut lines = text.split('\n');
-        let Some(first) = lines.next() else {
-            return;
-        };
-        self.insert_inner(first, true);
-        for line in lines {
-            self.newline();
-            self.insert_inner(line, true);
-        }
-    }
-
-    pub fn clear_span(&mut self) -> bool {
-        if let TextSelection::Span { start, end } = self.text.selection {
-            self.delete_between(start, end);
-            let (start, _) = sort_cursors(start, end);
-            self.text.selection = TextSelection::Pos(start);
-            true
-        } else {
-            false
-        }
-    }
-
-    pub fn delete_between(&mut self, start: Cursor, end: Cursor) {
-        let lines = &mut self.text.view.buf.lines;
-        let (start, end) = sort_cursors(start, end);
-        if start.line == end.line {
-            let line = &mut lines[start.line];
-            let text = line.text();
-            let text = text[..start.index].to_string() + &text[end.index..];
-            edit_line(line, text);
-        } else {
-            // start
-            let start_text = lines[start.line].text()[..start.index].to_string();
-            let end_text = &lines[end.line].text()[end.index..];
-            let text = start_text + end_text;
-            edit_line(&mut lines[start.line], text);
-        }
-        // between
-        let range = (start.line + 1)..=end.line;
-        if !range.is_empty() {
-            lines.splice(range, None);
-        }
-    }
-
-    fn insert_inner(&mut self, text: &str, mov: bool) {
-        self.clear_span();
-        if let TextSelection::Pos(cursor) = &mut self.text.selection {
-            let line = &mut self.text.view.buf.lines[cursor.line];
-            let mut line_text = line.text().to_string();
-            line_text.insert_str(cursor.index, text);
-            edit_line(line, line_text);
-            if mov {
-                for _ in 0..text.chars().count() {
-                    self.motion(Motion::Right, false);
-                }
-            }
-        }
-    }
-
-    pub fn newline(&mut self) {
-        if self.text.single_line {
-            return;
-        }
-        self.clear_span();
-        if let TextSelection::Pos(cursor) = &mut self.text.selection {
-            let lines = &mut self.text.view.buf.lines;
-            let line = &mut lines[cursor.line];
-            let new = line.split_off(cursor.index);
-            cursor.line += 1;
-            lines.insert(cursor.line, new);
-            cursor.index = 0;
-        }
-    }
-
-    pub fn backspace(&mut self, word: bool) {
-        if !self.clear_span()
-            && let TextSelection::Pos(cursor) = &mut self.text.selection
-            && (cursor.index != 0 || cursor.line != 0)
-        {
-            self.motion(if word { Motion::LeftWord } else { Motion::Left }, false);
-            self.delete(word);
-        }
-    }
-
-    pub fn delete(&mut self, word: bool) {
-        if !self.clear_span()
-            && let TextSelection::Pos(cursor) = &mut self.text.selection
-        {
-            if word {
-                let start = *cursor;
-                if let Some(end) = self.buf_motion(start, Motion::RightWord) {
-                    self.delete_between(start, end);
-                }
-            } else {
-                let lines = &mut self.text.view.buf.lines;
-                let line = &mut lines[cursor.line];
-                if cursor.index == line.text().len() {
-                    if cursor.line == lines.len() - 1 {
-                        return;
-                    }
-                    let add = lines.remove(cursor.line + 1).into_text();
-                    let line = &mut lines[cursor.line];
-                    let mut cur = line.text().to_string();
-                    cur.push_str(&add);
-                    edit_line(line, cur);
-                } else {
-                    let mut text = line.text().to_string();
-                    text.remove(cursor.index);
-                    edit_line(line, text);
-                }
-            }
-        }
-    }
-
-    fn buf_motion(&mut self, cursor: Cursor, motion: Motion) -> Option<Cursor> {
-        self.text
-            .buf
-            .cursor_motion(self.font_system, cursor, None, motion)
-            .map(|r| r.0)
-    }
-
-    pub fn select_word_at(&mut self, cursor: Cursor) {
-        if let (Some(start), Some(end)) = (
-            self.buf_motion(cursor, Motion::LeftWord),
-            self.buf_motion(cursor, Motion::RightWord),
-        ) {
-            self.text.selection = TextSelection::Span { start, end };
-        }
-    }
-
-    pub fn select_line_at(&mut self, cursor: Cursor) {
-        let end = self.text.buf.lines[cursor.line].text().len();
-        self.text.selection = TextSelection::Span {
-            start: Cursor::new(cursor.line, 0),
-            end: Cursor::new(cursor.line, end),
-        }
-    }
-
-    pub fn select(&mut self, pos: Vec2, size: Vec2, drag: bool, recent: bool) {
-        let pos = pos - self.text.region().top_left().to_abs(size);
-        let hit = self.text.buf.hit(pos.x, pos.y);
-        let sel = &mut self.text.selection;
-        match sel {
-            TextSelection::None => {
-                if !drag && let Some(hit) = hit {
-                    *sel = TextSelection::Pos(hit)
-                }
-            }
-            TextSelection::Pos(pos) => match (hit, drag) {
-                (None, false) => *sel = TextSelection::None,
-                (None, true) => (),
-                (Some(hit), false) => {
-                    if recent && hit == *pos {
-                        self.text.double_hit = Some(hit);
-                        return self.select_word_at(hit);
-                    } else {
-                        *pos = hit
-                    }
-                }
-                (Some(end), true) => *sel = TextSelection::Span { start: *pos, end },
-            },
-            TextSelection::Span { start, end } => match (hit, drag) {
-                (None, false) => *sel = TextSelection::None,
-                (None, true) => *sel = TextSelection::Pos(*start),
-                (Some(hit), false) => {
-                    if recent
-                        && let Some(double) = self.text.double_hit
-                        && double == hit
-                    {
-                        return self.select_line_at(hit);
-                    } else {
-                        *sel = TextSelection::Pos(hit)
-                    }
-                }
-                (Some(hit), true) => *end = hit,
-            },
-        }
-        if let TextSelection::Span { start, end } = sel
-            && start == end
-        {
-            *sel = TextSelection::Pos(*start);
-        }
-    }
-
-    pub fn deselect(&mut self) {
-        self.text.selection = TextSelection::None;
-    }
-
-    pub fn apply_event(&mut self, event: &KeyEvent, modifiers: &Modifiers) -> TextInputResult {
-        let old = (self.text.content(), self.text.selection);
-        let mut undo = false;
-        let res = self.apply_event_inner(event, modifiers, &mut undo);
-        if undo && let Some((old, selection)) = self.text.history.pop() {
-            self.set(&old);
-            self.text.selection = selection;
-        } else if self.text.content() != old.0 {
-            self.text.history.push(old);
-        }
-        res
-    }
-
-    fn apply_event_inner(
-        &mut self,
-        event: &KeyEvent,
-        modifiers: &Modifiers,
-        undo: &mut bool,
-    ) -> TextInputResult {
-        match &event.logical_key {
-            Key::Named(named) => match named {
-                NamedKey::Backspace => self.backspace(modifiers.control),
-                NamedKey::Delete => self.delete(modifiers.control),
-                NamedKey::Space => self.insert(" "),
-                NamedKey::Enter => {
-                    if modifiers.shift {
-                        self.newline();
-                    } else {
-                        return TextInputResult::Submit;
-                    }
-                }
-                NamedKey::ArrowRight => {
-                    if modifiers.control {
-                        self.motion(Motion::RightWord, modifiers.shift)
-                    } else {
-                        self.motion(Motion::Right, modifiers.shift)
-                    }
-                }
-                NamedKey::ArrowLeft => {
-                    if modifiers.control {
-                        self.motion(Motion::LeftWord, modifiers.shift)
-                    } else {
-                        self.motion(Motion::Left, modifiers.shift)
-                    }
-                }
-                NamedKey::ArrowUp => self.motion(Motion::Up, modifiers.shift),
-                NamedKey::ArrowDown => self.motion(Motion::Down, modifiers.shift),
-                NamedKey::Escape => {
-                    self.deselect();
-                    return TextInputResult::Unfocus;
-                }
-                _ => return TextInputResult::Unused,
-            },
-            Key::Character(text) => {
-                if modifiers.control {
-                    match text.as_str() {
-                        "v" => return TextInputResult::Paste,
-                        "c" => {
-                            if let TextSelection::Span { start, end } = self.text.selection {
-                                let content = self.text.select_content(start, end);
-                                return TextInputResult::Copy(content);
-                            }
-                        }
-                        "x" => {
-                            if let TextSelection::Span { start, end } = self.text.selection {
-                                let content = self.text.select_content(start, end);
-                                self.clear_span();
-                                return TextInputResult::Copy(content);
-                            }
-                        }
-                        "a" => {
-                            if !self.text.buf.lines[0].text().is_empty()
-                                || self.text.buf.lines.len() > 1
-                            {
-                                let lines = &self.text.buf.lines;
-                                let last_line = lines.len() - 1;
-                                let last_idx = lines[last_line].text().len();
-                                self.text.selection = TextSelection::Span {
-                                    start: Cursor::new(0, 0),
-                                    end: Cursor::new(last_line, last_idx),
-                                };
-                            }
-                        }
-                        "z" => {
-                            *undo = true;
-                        }
-                        _ => self.insert(text),
-                    }
-                } else {
-                    self.insert(text);
-                }
-            }
-            _ => return TextInputResult::Unused,
-        }
-        TextInputResult::Used
-    }
-}
-
 #[derive(Default)]
 pub struct Modifiers {
     pub shift: bool,

src/core/text/mod.rs

@@ -21,11 +21,11 @@ pub struct TextView {
     // cache
     tex: Option<RenderedText>,
     width: Option<f32>,
-    pub hint: Option<WidgetId>,
+    pub hint: Option<WidgetRef>,
 }
 
 impl TextView {
-    pub fn new(buf: TextBuffer, attrs: TextAttrs, hint: Option<WidgetId>) -> Self {
+    pub fn new(buf: TextBuffer, attrs: TextAttrs, hint: Option<WidgetRef>) -> Self {
         Self {
             attrs: attrs.into(),
             buf: buf.into(),
@@ -67,9 +67,12 @@ impl TextView {
             return tex.clone();
         }
         self.width = width;
-        let font_system = &mut ctx.text.font_system;
-        self.attrs.apply(font_system, &mut self.buf, width);
-        self.buf.shape_until_scroll(font_system, false);
+        let mut text_data = ctx.text.borrow_mut();
+        self.attrs
+            .apply(&mut text_data.font_system, &mut self.buf, width);
+        self.buf
+            .shape_until_scroll(&mut text_data.font_system, false);
+        drop(text_data);
         let tex = ctx.draw_text(&mut self.buf, &self.attrs);
         self.tex = Some(tex.clone());
         self.attrs.changed = false;
@@ -136,7 +139,7 @@ impl Text {
         if self.content.changed {
             self.content.changed = false;
             self.view.buf.set_text(
-                &mut ctx.text.font_system,
+                &mut ctx.text.borrow_mut().font_system,
                 &self.content,
                 &Attrs::new().family(self.view.attrs.family),
                 SHAPING,