use gpui::{    actions,    elements::{Component, Flex, ParentElement, SafeStylable},    AppContext, Element, Entity, ModelHandle, Task, View, ViewContext, ViewHandle, WeakViewHandle,};use project::Project;use theme::components::{action_button::Button, label::Label, ComponentExt};use workspace::{    item::Item, register_deserializable_item, ItemId, Pane, PaneBackdrop, Workspace, WorkspaceId,}; pub fn init(cx: &mut AppContext) {    cx.add_action(ComponentTest::toggle_disclosure);    cx.add_action(ComponentTest::toggle_toggle);    cx.add_action(ComponentTest::deploy);    register_deserializable_item::<ComponentTest>(cx);} actions!(    test,    [NoAction, ToggleDisclosure, ToggleToggle, NewComponentTest]); struct ComponentTest {    disclosed: bool,    toggled: bool,} impl ComponentTest {    fn new() -> Self {        Self {            disclosed: false,            toggled: false,        }    }     fn deploy(workspace: &mut Workspace, _: &NewComponentTest, cx: &mut ViewContext<Workspace>) {        workspace.add_item(Box::new(cx.add_view(|_| ComponentTest::new())), cx);    }     fn toggle_disclosure(&mut self, _: &ToggleDisclosure, cx: &mut ViewContext<Self>) {        self.disclosed = !self.disclosed;        cx.notify();    }     fn toggle_toggle(&mut self, _: &ToggleToggle, cx: &mut ViewContext<Self>) {        self.toggled = !self.toggled;        cx.notify();    }} impl Entity for ComponentTest {    type Event = ();} impl View for ComponentTest {    fn ui_name() -> &'static str {        "Component Test"    }     fn render(&mut self, cx: &mut gpui::ViewContext<Self>) -> gpui::AnyElement<Self> {        let theme = theme::current(cx);         PaneBackdrop::new(            cx.view_id(),            Flex::column()                .with_spacing(10.)                .with_child(                    Button::action(NoAction)                        .with_tooltip("Here's what a tooltip looks like", theme.tooltip.clone())                        .with_contents(Label::new("Click me!"))                        .with_style(theme.component_test.button.clone())                        .element(),                )                .with_child(                    Button::action(ToggleToggle)                        .with_tooltip("Here's what a tooltip looks like", theme.tooltip.clone())                        .with_contents(Label::new("Toggle me!"))                        .toggleable(self.toggled)                        .with_style(theme.component_test.toggle.clone())                        .element(),                )                .with_child(                    Label::new("A disclosure")                        .disclosable(Some(self.disclosed), Box::new(ToggleDisclosure))                        .with_style(theme.component_test.disclosure.clone())                        .element(),                )                .constrained()                .with_width(200.)                .aligned()                .into_any(),        )        .into_any()    }} impl Item for ComponentTest {    fn tab_content<V: 'static>(        &self,        _: Option<usize>,        style: &theme::Tab,        _: &AppContext,    ) -> gpui::AnyElement<V> {        gpui::elements::Label::new("Component test", style.label.clone()).into_any()    }     fn serialized_item_kind() -> Option<&'static str> {        Some("ComponentTest")    }     fn deserialize(        _project: ModelHandle<Project>,        _workspace: WeakViewHandle<Workspace>,        _workspace_id: WorkspaceId,        _item_id: ItemId,        cx: &mut ViewContext<Pane>,    ) -> Task<anyhow::Result<ViewHandle<Self>>> {        Task::ready(Ok(cx.add_view(|_| Self::new())))    }}