Merge pull request #2123 from iced-rs/text-editor

`TextEditor` widget (or multi-line text input)

1 files changed, 63 insertions, 28 deletions

diff --git a/core/src/renderer/null.rs b/core/src/renderer/null.rs
index 55d58a59..da0f32de 100644
--- a/core/src/renderer/null.rs
+++ b/core/src/renderer/null.rs
@@ -43,6 +43,7 @@ impl Renderer for Null {
 impl text::Renderer for Null {
     type Font = Font;
     type Paragraph = ();
+    type Editor = ();
 
     const ICON_FONT: Font = Font::DEFAULT;
     const CHECKMARK_ICON: char = '0';
@@ -58,19 +59,17 @@ impl text::Renderer for Null {
 
     fn load_font(&mut self, _font: Cow<'static, [u8]>) {}
 
-    fn create_paragraph(&self, _text: Text<'_, Self::Font>) -> Self::Paragraph {
-    }
-
-    fn resize_paragraph(
-        &self,
-        _paragraph: &mut Self::Paragraph,
-        _new_bounds: Size,
+    fn fill_paragraph(
+        &mut self,
+        _paragraph: &Self::Paragraph,
+        _position: Point,
+        _color: Color,
     ) {
     }
 
-    fn fill_paragraph(
+    fn fill_editor(
         &mut self,
-        _paragraph: &Self::Paragraph,
+        _editor: &Self::Editor,
         _position: Point,
         _color: Color,
     ) {
@@ -88,47 +87,83 @@ impl text::Renderer for Null {
 impl text::Paragraph for () {
     type Font = Font;
 
-    fn content(&self) -> &str {
-        ""
+    fn with_text(_text: Text<'_, Self::Font>) -> Self {}
+
+    fn resize(&mut self, _new_bounds: Size) {}
+
+    fn compare(&self, _text: Text<'_, Self::Font>) -> text::Difference {
+        text::Difference::None
     }
 
-    fn text_size(&self) -> Pixels {
-        Pixels(16.0)
+    fn horizontal_alignment(&self) -> alignment::Horizontal {
+        alignment::Horizontal::Left
     }
 
-    fn font(&self) -> Self::Font {
-        Font::default()
+    fn vertical_alignment(&self) -> alignment::Vertical {
+        alignment::Vertical::Top
     }
 
-    fn line_height(&self) -> text::LineHeight {
-        text::LineHeight::default()
+    fn grapheme_position(&self, _line: usize, _index: usize) -> Option<Point> {
+        None
     }
 
-    fn shaping(&self) -> text::Shaping {
-        text::Shaping::default()
+    fn min_bounds(&self) -> Size {
+        Size::ZERO
     }
 
-    fn horizontal_alignment(&self) -> alignment::Horizontal {
-        alignment::Horizontal::Left
+    fn hit_test(&self, _point: Point) -> Option<text::Hit> {
+        None
     }
+}
 
-    fn vertical_alignment(&self) -> alignment::Vertical {
-        alignment::Vertical::Top
+impl text::Editor for () {
+    type Font = Font;
+
+    fn with_text(_text: &str) -> Self {}
+
+    fn cursor(&self) -> text::editor::Cursor {
+        text::editor::Cursor::Caret(Point::ORIGIN)
     }
 
-    fn grapheme_position(&self, _line: usize, _index: usize) -> Option<Point> {
+    fn cursor_position(&self) -> (usize, usize) {
+        (0, 0)
+    }
+
+    fn selection(&self) -> Option<String> {
+        None
+    }
+
+    fn line(&self, _index: usize) -> Option<&str> {
         None
     }
 
+    fn line_count(&self) -> usize {
+        0
+    }
+
+    fn perform(&mut self, _action: text::editor::Action) {}
+
     fn bounds(&self) -> Size {
         Size::ZERO
     }
 
-    fn min_bounds(&self) -> Size {
-        Size::ZERO
+    fn update(
+        &mut self,
+        _new_bounds: Size,
+        _new_font: Self::Font,
+        _new_size: Pixels,
+        _new_line_height: text::LineHeight,
+        _new_highlighter: &mut impl text::Highlighter,
+    ) {
     }
 
-    fn hit_test(&self, _point: Point) -> Option<text::Hit> {
-        None
+    fn highlight<H: text::Highlighter>(
+        &mut self,
+        _font: Self::Font,
+        _highlighter: &mut H,
+        _format_highlight: impl Fn(
+            &H::Highlight,
+        ) -> text::highlighter::Format<Self::Font>,
+    ) {
     }
 }