diff options
Diffstat (limited to 'widget/src/checkbox.rs')
| -rw-r--r-- | widget/src/checkbox.rs | 55 |
1 files changed, 39 insertions, 16 deletions
diff --git a/widget/src/checkbox.rs b/widget/src/checkbox.rs index 6f559ccc..0ff4d58b 100644 --- a/widget/src/checkbox.rs +++ b/widget/src/checkbox.rs @@ -28,7 +28,7 @@ pub use crate::style::checkbox::{Appearance, StyleSheet}; /// /// let is_checked = true; /// -/// Checkbox::new("Toggle me!", is_checked, Message::CheckboxToggled); +/// Checkbox::new("Toggle me!", is_checked).on_toggle(Message::CheckboxToggled); /// ``` /// ///  @@ -43,7 +43,7 @@ pub struct Checkbox< Renderer: text::Renderer, { is_checked: bool, - on_toggle: Box<dyn Fn(bool) -> Message + 'a>, + on_toggle: Option<Box<dyn Fn(bool) -> Message + 'a>>, label: String, width: Length, size: f32, @@ -70,18 +70,12 @@ where /// Creates a new [`Checkbox`]. /// /// It expects: - /// * a boolean describing whether the [`Checkbox`] is checked or not /// * the label of the [`Checkbox`] - /// * a function that will be called when the [`Checkbox`] is toggled. It - /// will receive the new state of the [`Checkbox`] and must produce a - /// `Message`. - pub fn new<F>(label: impl Into<String>, is_checked: bool, f: F) -> Self - where - F: 'a + Fn(bool) -> Message, - { + /// * a boolean describing whether the [`Checkbox`] is checked or not + pub fn new(label: impl Into<String>, is_checked: bool) -> Self { Checkbox { is_checked, - on_toggle: Box::new(f), + on_toggle: None, label: label.into(), width: Length::Shrink, size: Self::DEFAULT_SIZE, @@ -101,6 +95,31 @@ where } } + /// Sets the function that will be called when the [`Checkbox`] is toggled. + /// It will receive the new state of the [`Checkbox`] and must produce a + /// `Message`. + /// + /// Unless `on_toggle` is called, the [`Checkbox`] will be disabled. + pub fn on_toggle<F>(mut self, f: F) -> Self + where + F: 'a + Fn(bool) -> Message, + { + self.on_toggle = Some(Box::new(f)); + self + } + + /// Sets the function that will be called when the [`Checkbox`] is toggled, + /// if `Some`. + /// + /// If `None`, the checkbox will be disabled. + pub fn on_toggle_maybe<F>(mut self, f: Option<F>) -> Self + where + F: Fn(bool) -> Message + 'a, + { + self.on_toggle = f.map(|f| Box::new(f) as _); + self + } + /// Sets the size of the [`Checkbox`]. pub fn size(mut self, size: impl Into<Pixels>) -> Self { self.size = size.into().0; @@ -235,9 +254,10 @@ where let mouse_over = cursor.is_over(layout.bounds()); if mouse_over { - shell.publish((self.on_toggle)(!self.is_checked)); - - return event::Status::Captured; + if let Some(on_toggle) = &self.on_toggle { + shell.publish((on_toggle)(!self.is_checked)); + return event::Status::Captured; + } } } _ => {} @@ -254,7 +274,7 @@ where _viewport: &Rectangle, _renderer: &Renderer, ) -> mouse::Interaction { - if cursor.is_over(layout.bounds()) { + if cursor.is_over(layout.bounds()) && self.on_toggle.is_some() { mouse::Interaction::Pointer } else { mouse::Interaction::default() @@ -272,10 +292,13 @@ where viewport: &Rectangle, ) { let is_mouse_over = cursor.is_over(layout.bounds()); + let is_disabled = self.on_toggle.is_none(); let mut children = layout.children(); - let custom_style = if is_mouse_over { + let custom_style = if is_disabled { + theme.disabled(&self.style, self.is_checked) + } else if is_mouse_over { theme.hovered(&self.style, self.is_checked) } else { theme.active(&self.style, self.is_checked) |