Draft `Editor` API and `TextEditor` widget

3 files changed, 161 insertions, 0 deletions

diff --git a/style/src/lib.rs b/style/src/lib.rs
index 0c555ed8..7a97ac77 100644
--- a/style/src/lib.rs
+++ b/style/src/lib.rs
@@ -35,6 +35,7 @@ pub mod rule;
 pub mod scrollable;
 pub mod slider;
 pub mod svg;
+pub mod text_editor;
 pub mod text_input;
 pub mod theme;
 pub mod toggler;
diff --git a/style/src/text_editor.rs b/style/src/text_editor.rs
new file mode 100644
index 00000000..45c9bad8
--- /dev/null
+++ b/style/src/text_editor.rs
@@ -0,0 +1,47 @@
+//! Change the appearance of a text editor.
+use iced_core::{Background, BorderRadius, Color};
+
+/// The appearance of a text input.
+#[derive(Debug, Clone, Copy)]
+pub struct Appearance {
+    /// The [`Background`] of the text input.
+    pub background: Background,
+    /// The border radius of the text input.
+    pub border_radius: BorderRadius,
+    /// The border width of the text input.
+    pub border_width: f32,
+    /// The border [`Color`] of the text input.
+    pub border_color: Color,
+}
+
+/// A set of rules that dictate the style of a text input.
+pub trait StyleSheet {
+    /// The supported style of the [`StyleSheet`].
+    type Style: Default;
+
+    /// Produces the style of an active text input.
+    fn active(&self, style: &Self::Style) -> Appearance;
+
+    /// Produces the style of a focused text input.
+    fn focused(&self, style: &Self::Style) -> Appearance;
+
+    /// Produces the [`Color`] of the placeholder of a text input.
+    fn placeholder_color(&self, style: &Self::Style) -> Color;
+
+    /// Produces the [`Color`] of the value of a text input.
+    fn value_color(&self, style: &Self::Style) -> Color;
+
+    /// Produces the [`Color`] of the value of a disabled text input.
+    fn disabled_color(&self, style: &Self::Style) -> Color;
+
+    /// Produces the [`Color`] of the selection of a text input.
+    fn selection_color(&self, style: &Self::Style) -> Color;
+
+    /// Produces the style of an hovered text input.
+    fn hovered(&self, style: &Self::Style) -> Appearance {
+        self.focused(style)
+    }
+
+    /// Produces the style of a disabled text input.
+    fn disabled(&self, style: &Self::Style) -> Appearance;
+}
diff --git a/style/src/theme.rs b/style/src/theme.rs
index 893d7202..a1501c01 100644
--- a/style/src/theme.rs
+++ b/style/src/theme.rs
@@ -17,6 +17,7 @@ use crate::rule;
 use crate::scrollable;
 use crate::slider;
 use crate::svg;
+use crate::text_editor;
 use crate::text_input;
 use crate::toggler;
 
@@ -1174,3 +1175,115 @@ impl text_input::StyleSheet for Theme {
         self.placeholder_color(style)
     }
 }
+
+/// The style of a text input.
+#[derive(Default)]
+pub enum TextEditor {
+    /// The default style.
+    #[default]
+    Default,
+    /// A custom style.
+    Custom(Box<dyn text_editor::StyleSheet<Style = Theme>>),
+}
+
+impl text_editor::StyleSheet for Theme {
+    type Style = TextEditor;
+
+    fn active(&self, style: &Self::Style) -> text_editor::Appearance {
+        if let TextEditor::Custom(custom) = style {
+            return custom.active(self);
+        }
+
+        let palette = self.extended_palette();
+
+        text_editor::Appearance {
+            background: palette.background.base.color.into(),
+            border_radius: 2.0.into(),
+            border_width: 1.0,
+            border_color: palette.background.strong.color,
+        }
+    }
+
+    fn hovered(&self, style: &Self::Style) -> text_editor::Appearance {
+        if let TextEditor::Custom(custom) = style {
+            return custom.hovered(self);
+        }
+
+        let palette = self.extended_palette();
+
+        text_editor::Appearance {
+            background: palette.background.base.color.into(),
+            border_radius: 2.0.into(),
+            border_width: 1.0,
+            border_color: palette.background.base.text,
+        }
+    }
+
+    fn focused(&self, style: &Self::Style) -> text_editor::Appearance {
+        if let TextEditor::Custom(custom) = style {
+            return custom.focused(self);
+        }
+
+        let palette = self.extended_palette();
+
+        text_editor::Appearance {
+            background: palette.background.base.color.into(),
+            border_radius: 2.0.into(),
+            border_width: 1.0,
+            border_color: palette.primary.strong.color,
+        }
+    }
+
+    fn placeholder_color(&self, style: &Self::Style) -> Color {
+        if let TextEditor::Custom(custom) = style {
+            return custom.placeholder_color(self);
+        }
+
+        let palette = self.extended_palette();
+
+        palette.background.strong.color
+    }
+
+    fn value_color(&self, style: &Self::Style) -> Color {
+        if let TextEditor::Custom(custom) = style {
+            return custom.value_color(self);
+        }
+
+        let palette = self.extended_palette();
+
+        palette.background.base.text
+    }
+
+    fn selection_color(&self, style: &Self::Style) -> Color {
+        if let TextEditor::Custom(custom) = style {
+            return custom.selection_color(self);
+        }
+
+        let palette = self.extended_palette();
+
+        palette.primary.weak.color
+    }
+
+    fn disabled(&self, style: &Self::Style) -> text_editor::Appearance {
+        if let TextEditor::Custom(custom) = style {
+            return custom.disabled(self);
+        }
+
+        let palette = self.extended_palette();
+
+        text_editor::Appearance {
+            background: palette.background.weak.color.into(),
+            border_radius: 2.0.into(),
+            border_width: 1.0,
+            border_color: palette.background.strong.color,
+        }
+    }
+
+    fn disabled_color(&self, style: &Self::Style) -> Color {
+        if let TextEditor::Custom(custom) = style {
+            return custom.disabled_color(self);
+        }
+
+        self.placeholder_color(style)
+    }
+}