1use std::ops::Deref;
  2
  3use gpui3::{
  4    rems, AbsoluteLength, AnyElement, BorrowAppContext, Bounds, LayoutId, Pixels, WindowContext,
  5};
  6
  7use crate::prelude::*;
  8
  9/// Returns the user settings.
 10pub fn user_settings(cx: &WindowContext) -> FakeSettings {
 11    cx.global::<FakeSettings>().clone()
 12}
 13
 14pub fn user_settings_mut<'cx>(cx: &'cx mut WindowContext) -> &'cx mut FakeSettings {
 15    cx.global_mut::<FakeSettings>()
 16}
 17
 18#[derive(Clone)]
 19pub enum SettingValue<T> {
 20    UserDefined(T),
 21    Default(T),
 22}
 23
 24impl<T> Deref for SettingValue<T> {
 25    type Target = T;
 26
 27    fn deref(&self) -> &Self::Target {
 28        match self {
 29            Self::UserDefined(value) => value,
 30            Self::Default(value) => value,
 31        }
 32    }
 33}
 34
 35#[derive(Clone)]
 36pub struct TitlebarSettings {
 37    pub show_project_owner: SettingValue<bool>,
 38    pub show_git_status: SettingValue<bool>,
 39    pub show_git_controls: SettingValue<bool>,
 40}
 41
 42impl Default for TitlebarSettings {
 43    fn default() -> Self {
 44        Self {
 45            show_project_owner: SettingValue::Default(true),
 46            show_git_status: SettingValue::Default(true),
 47            show_git_controls: SettingValue::Default(true),
 48        }
 49    }
 50}
 51
 52// These should be merged into settings
 53#[derive(Clone)]
 54pub struct FakeSettings {
 55    pub default_panel_size: SettingValue<AbsoluteLength>,
 56    pub list_disclosure_style: SettingValue<DisclosureControlStyle>,
 57    pub list_indent_depth: SettingValue<AbsoluteLength>,
 58    pub titlebar: TitlebarSettings,
 59    pub ui_scale: SettingValue<f32>,
 60}
 61
 62impl Default for FakeSettings {
 63    fn default() -> Self {
 64        Self {
 65            titlebar: TitlebarSettings::default(),
 66            list_disclosure_style: SettingValue::Default(DisclosureControlStyle::ChevronOnHover),
 67            list_indent_depth: SettingValue::Default(rems(0.3).into()),
 68            default_panel_size: SettingValue::Default(rems(16.).into()),
 69            ui_scale: SettingValue::Default(1.),
 70        }
 71    }
 72}
 73
 74impl FakeSettings {}
 75
 76pub fn with_settings<E, F>(
 77    settings: FakeSettings,
 78    cx: &mut ViewContext<E::ViewState>,
 79    build_child: F,
 80) -> WithSettings<E>
 81where
 82    E: Element,
 83    F: FnOnce(&mut ViewContext<E::ViewState>) -> E,
 84{
 85    let child = cx.with_global(settings.clone(), |cx| build_child(cx));
 86    WithSettings { settings, child }
 87}
 88
 89pub struct WithSettings<E> {
 90    pub(crate) settings: FakeSettings,
 91    pub(crate) child: E,
 92}
 93
 94impl<E> IntoAnyElement<E::ViewState> for WithSettings<E>
 95where
 96    E: Element,
 97{
 98    fn into_any(self) -> AnyElement<E::ViewState> {
 99        AnyElement::new(self)
100    }
101}
102
103impl<E: Element> Element for WithSettings<E> {
104    type ViewState = E::ViewState;
105    type ElementState = E::ElementState;
106
107    fn id(&self) -> Option<gpui3::ElementId> {
108        None
109    }
110
111    fn initialize(
112        &mut self,
113        view_state: &mut Self::ViewState,
114        element_state: Option<Self::ElementState>,
115        cx: &mut ViewContext<Self::ViewState>,
116    ) -> Self::ElementState {
117        cx.with_global(self.settings.clone(), |cx| {
118            self.child.initialize(view_state, element_state, cx)
119        })
120    }
121
122    fn layout(
123        &mut self,
124        view_state: &mut E::ViewState,
125        element_state: &mut Self::ElementState,
126        cx: &mut ViewContext<E::ViewState>,
127    ) -> LayoutId
128    where
129        Self: Sized,
130    {
131        cx.with_global(self.settings.clone(), |cx| {
132            self.child.layout(view_state, element_state, cx)
133        })
134    }
135
136    fn paint(
137        &mut self,
138        bounds: Bounds<Pixels>,
139        view_state: &mut Self::ViewState,
140        frame_state: &mut Self::ElementState,
141        cx: &mut ViewContext<Self::ViewState>,
142    ) where
143        Self: Sized,
144    {
145        cx.with_global(self.settings.clone(), |cx| {
146            self.child.paint(bounds, view_state, frame_state, cx);
147        });
148    }
149}