ZIm/crates/component_preview/src/component_preview.rs
2025-03-31 20:55:27 +02:00

602 lines
19 KiB
Rust

//! # Component Preview
//!
//! A view for exploring Zed components.
use std::iter::Iterator;
use std::sync::Arc;
use client::UserStore;
use component::{ComponentId, ComponentMetadata, components};
use gpui::{
App, Entity, EventEmitter, FocusHandle, Focusable, Task, WeakEntity, Window, list, prelude::*,
uniform_list,
};
use collections::HashMap;
use gpui::{ListState, ScrollHandle, UniformListScrollHandle};
use languages::LanguageRegistry;
use notifications::status_toast::{StatusToast, ToastIcon};
use project::Project;
use ui::{Divider, ListItem, ListSubHeader, prelude::*};
use workspace::{AppState, ItemId, SerializableItem};
use workspace::{Item, Workspace, WorkspaceId, item::ItemEvent};
pub fn init(app_state: Arc<AppState>, cx: &mut App) {
let app_state = app_state.clone();
cx.observe_new(move |workspace: &mut Workspace, _, cx| {
let app_state = app_state.clone();
let weak_workspace = cx.entity().downgrade();
workspace.register_action(
move |workspace, _: &workspace::OpenComponentPreview, window, cx| {
let app_state = app_state.clone();
let language_registry = app_state.languages.clone();
let user_store = app_state.user_store.clone();
let component_preview = cx.new(|cx| {
ComponentPreview::new(
weak_workspace.clone(),
language_registry,
user_store,
None,
cx,
)
});
workspace.add_item_to_active_pane(
Box::new(component_preview),
None,
true,
window,
cx,
)
},
);
})
.detach();
}
enum PreviewEntry {
AllComponents,
Separator,
Component(ComponentMetadata),
SectionHeader(SharedString),
}
impl From<ComponentMetadata> for PreviewEntry {
fn from(component: ComponentMetadata) -> Self {
PreviewEntry::Component(component)
}
}
impl From<SharedString> for PreviewEntry {
fn from(section_header: SharedString) -> Self {
PreviewEntry::SectionHeader(section_header)
}
}
#[derive(Default, Debug, Clone, PartialEq, Eq)]
enum PreviewPage {
#[default]
AllComponents,
Component(ComponentId),
}
struct ComponentPreview {
focus_handle: FocusHandle,
_view_scroll_handle: ScrollHandle,
nav_scroll_handle: UniformListScrollHandle,
component_map: HashMap<ComponentId, ComponentMetadata>,
active_page: PreviewPage,
components: Vec<ComponentMetadata>,
component_list: ListState,
cursor_index: usize,
language_registry: Arc<LanguageRegistry>,
workspace: WeakEntity<Workspace>,
user_store: Entity<UserStore>,
}
impl ComponentPreview {
pub fn new(
workspace: WeakEntity<Workspace>,
language_registry: Arc<LanguageRegistry>,
user_store: Entity<UserStore>,
selected_index: impl Into<Option<usize>>,
cx: &mut Context<Self>,
) -> Self {
let sorted_components = components().all_sorted();
let selected_index = selected_index.into().unwrap_or(0);
let component_list = ListState::new(
sorted_components.len(),
gpui::ListAlignment::Top,
px(1500.0),
{
let this = cx.entity().downgrade();
move |ix, window: &mut Window, cx: &mut App| {
this.update(cx, |this, cx| {
let component = this.get_component(ix);
this.render_preview(&component, window, cx)
.into_any_element()
})
.unwrap()
}
},
);
let mut component_preview = Self {
focus_handle: cx.focus_handle(),
_view_scroll_handle: ScrollHandle::new(),
nav_scroll_handle: UniformListScrollHandle::new(),
language_registry,
user_store,
workspace,
active_page: PreviewPage::AllComponents,
component_map: components().0,
components: sorted_components,
component_list,
cursor_index: selected_index,
};
if component_preview.cursor_index > 0 {
component_preview.scroll_to_preview(component_preview.cursor_index, cx);
}
component_preview.update_component_list(cx);
component_preview
}
fn scroll_to_preview(&mut self, ix: usize, cx: &mut Context<Self>) {
self.component_list.scroll_to_reveal_item(ix);
self.cursor_index = ix;
cx.notify();
}
fn set_active_page(&mut self, page: PreviewPage, cx: &mut Context<Self>) {
self.active_page = page;
cx.notify();
}
fn get_component(&self, ix: usize) -> ComponentMetadata {
self.components[ix].clone()
}
fn scope_ordered_entries(&self) -> Vec<PreviewEntry> {
use std::collections::HashMap;
let mut scope_groups: HashMap<Option<ComponentScope>, Vec<ComponentMetadata>> =
HashMap::default();
for component in &self.components {
scope_groups
.entry(component.scope())
.or_insert_with(Vec::new)
.push(component.clone());
}
for components in scope_groups.values_mut() {
components.sort_by_key(|c| c.name().to_lowercase());
}
let mut entries = Vec::new();
let known_scopes = [
ComponentScope::Layout,
ComponentScope::Input,
ComponentScope::Editor,
ComponentScope::Notification,
ComponentScope::Collaboration,
ComponentScope::VersionControl,
];
// Always show all components first
entries.push(PreviewEntry::AllComponents);
entries.push(PreviewEntry::Separator);
for scope in known_scopes.iter() {
let scope_key = Some(scope.clone());
if let Some(components) = scope_groups.remove(&scope_key) {
if !components.is_empty() {
entries.push(PreviewEntry::SectionHeader(scope.to_string().into()));
for component in components {
entries.push(PreviewEntry::Component(component));
}
}
}
}
for (scope, components) in &scope_groups {
if let Some(ComponentScope::Unknown(_)) = scope {
if !components.is_empty() {
if let Some(scope_value) = scope {
entries.push(PreviewEntry::SectionHeader(scope_value.to_string().into()));
}
for component in components {
entries.push(PreviewEntry::Component(component.clone()));
}
}
}
}
if let Some(components) = scope_groups.get(&None) {
if !components.is_empty() {
entries.push(PreviewEntry::Separator);
entries.push(PreviewEntry::SectionHeader("Uncategorized".into()));
for component in components {
entries.push(PreviewEntry::Component(component.clone()));
}
}
}
entries
}
fn render_sidebar_entry(
&self,
ix: usize,
entry: &PreviewEntry,
cx: &Context<Self>,
) -> impl IntoElement + use<> {
match entry {
PreviewEntry::Component(component_metadata) => {
let id = component_metadata.id();
let selected = self.active_page == PreviewPage::Component(id.clone());
ListItem::new(ix)
.child(Label::new(component_metadata.name().clone()).color(Color::Default))
.selectable(true)
.toggle_state(selected)
.inset(true)
.on_click(cx.listener(move |this, _, _, cx| {
let id = id.clone();
this.set_active_page(PreviewPage::Component(id), cx);
}))
.into_any_element()
}
PreviewEntry::SectionHeader(shared_string) => ListSubHeader::new(shared_string)
.inset(true)
.into_any_element(),
PreviewEntry::AllComponents => {
let selected = self.active_page == PreviewPage::AllComponents;
ListItem::new(ix)
.child(Label::new("All Components").color(Color::Default))
.selectable(true)
.toggle_state(selected)
.inset(true)
.on_click(cx.listener(move |this, _, _, cx| {
this.set_active_page(PreviewPage::AllComponents, cx);
}))
.into_any_element()
}
PreviewEntry::Separator => ListItem::new(ix)
.child(h_flex().pt_3().child(Divider::horizontal_dashed()))
.into_any_element(),
}
}
fn update_component_list(&mut self, cx: &mut Context<Self>) {
let new_len = self.scope_ordered_entries().len();
let entries = self.scope_ordered_entries();
let weak_entity = cx.entity().downgrade();
let new_list = ListState::new(
new_len,
gpui::ListAlignment::Top,
px(1500.0),
move |ix, window, cx| {
let entry = &entries[ix];
weak_entity
.update(cx, |this, cx| match entry {
PreviewEntry::Component(component) => this
.render_preview(component, window, cx)
.into_any_element(),
PreviewEntry::SectionHeader(shared_string) => this
.render_scope_header(ix, shared_string.clone(), window, cx)
.into_any_element(),
PreviewEntry::AllComponents => div().w_full().h_0().into_any_element(),
PreviewEntry::Separator => div().w_full().h_0().into_any_element(),
})
.unwrap()
},
);
self.component_list = new_list;
}
fn render_scope_header(
&self,
_ix: usize,
title: SharedString,
_window: &Window,
_cx: &App,
) -> impl IntoElement {
h_flex()
.w_full()
.h_10()
.items_center()
.child(Headline::new(title).size(HeadlineSize::XSmall))
.child(Divider::horizontal())
}
fn render_preview(
&self,
component: &ComponentMetadata,
window: &mut Window,
cx: &mut App,
) -> impl IntoElement {
let name = component.name();
let scope = component.scope();
let description = component.description();
v_flex()
.py_2()
.child(
v_flex()
.border_1()
.border_color(cx.theme().colors().border)
.rounded_sm()
.w_full()
.gap_4()
.py_4()
.px_6()
.flex_none()
.child(
v_flex()
.gap_1()
.child(
h_flex()
.gap_1()
.text_xl()
.child(div().child(name))
.when_some(scope, |this, scope| {
this.child(div().opacity(0.5).child(format!("({})", scope)))
}),
)
.when_some(description, |this, description| {
this.child(
div()
.text_ui_sm(cx)
.text_color(cx.theme().colors().text_muted)
.max_w(px(600.0))
.child(description),
)
}),
)
.when_some(component.preview(), |this, preview| {
this.child(preview(window, cx))
}),
)
.into_any_element()
}
fn render_all_components(&self) -> impl IntoElement {
v_flex()
.id("component-list")
.px_8()
.pt_4()
.size_full()
.child(
list(self.component_list.clone())
.flex_grow()
.with_sizing_behavior(gpui::ListSizingBehavior::Auto),
)
}
fn render_component_page(
&mut self,
component_id: &ComponentId,
window: &mut Window,
cx: &mut Context<Self>,
) -> impl IntoElement {
let component = self.component_map.get(&component_id);
if let Some(component) = component {
v_flex()
.w_full()
.flex_initial()
.min_h_full()
.child(self.render_preview(component, window, cx))
.into_any_element()
} else {
v_flex()
.size_full()
.items_center()
.justify_center()
.child("Component not found")
.into_any_element()
}
}
fn test_status_toast(&self, cx: &mut Context<Self>) {
if let Some(workspace) = self.workspace.upgrade() {
workspace.update(cx, |workspace, cx| {
let status_toast =
StatusToast::new("`zed/new-notification-system` created!", cx, |this, _cx| {
this.icon(ToastIcon::new(IconName::GitBranchSmall).color(Color::Muted))
.action("Open Pull Request", |_, cx| {
cx.open_url("https://github.com/")
})
});
workspace.toggle_status_toast(status_toast, cx)
});
}
}
}
impl Render for ComponentPreview {
fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
let sidebar_entries = self.scope_ordered_entries();
let active_page = self.active_page.clone();
h_flex()
.id("component-preview")
.key_context("ComponentPreview")
.items_start()
.overflow_hidden()
.size_full()
.track_focus(&self.focus_handle)
.px_2()
.bg(cx.theme().colors().editor_background)
.child(
v_flex()
.h_full()
.child(
uniform_list(
cx.entity().clone(),
"component-nav",
sidebar_entries.len(),
move |this, range, _window, cx| {
range
.map(|ix| {
this.render_sidebar_entry(ix, &sidebar_entries[ix], cx)
})
.collect()
},
)
.track_scroll(self.nav_scroll_handle.clone())
.pt_4()
.w(px(240.))
.h_full()
.flex_1(),
)
.child(
div().w_full().pb_4().child(
Button::new("toast-test", "Launch Toast")
.on_click(cx.listener({
move |this, _, _window, cx| {
this.test_status_toast(cx);
cx.notify();
}
}))
.full_width(),
),
),
)
.child(match active_page {
PreviewPage::AllComponents => self.render_all_components().into_any_element(),
PreviewPage::Component(id) => self
.render_component_page(&id, window, cx)
.into_any_element(),
})
}
}
impl EventEmitter<ItemEvent> for ComponentPreview {}
impl Focusable for ComponentPreview {
fn focus_handle(&self, _: &App) -> gpui::FocusHandle {
self.focus_handle.clone()
}
}
impl Item for ComponentPreview {
type Event = ItemEvent;
fn tab_content_text(&self, _window: &Window, _cx: &App) -> Option<SharedString> {
Some("Component Preview".into())
}
fn telemetry_event_text(&self) -> Option<&'static str> {
None
}
fn show_toolbar(&self) -> bool {
false
}
fn clone_on_split(
&self,
_workspace_id: Option<WorkspaceId>,
_window: &mut Window,
cx: &mut Context<Self>,
) -> Option<gpui::Entity<Self>>
where
Self: Sized,
{
let language_registry = self.language_registry.clone();
let user_store = self.user_store.clone();
let weak_workspace = self.workspace.clone();
let selected_index = self.cursor_index;
Some(cx.new(|cx| {
Self::new(
weak_workspace,
language_registry,
user_store,
selected_index,
cx,
)
}))
}
fn to_item_events(event: &Self::Event, mut f: impl FnMut(workspace::item::ItemEvent)) {
f(*event)
}
}
impl SerializableItem for ComponentPreview {
fn serialized_item_kind() -> &'static str {
"ComponentPreview"
}
fn deserialize(
project: Entity<Project>,
workspace: WeakEntity<Workspace>,
_workspace_id: WorkspaceId,
_item_id: ItemId,
window: &mut Window,
cx: &mut App,
) -> Task<gpui::Result<Entity<Self>>> {
let user_store = project.read(cx).user_store().clone();
let language_registry = project.read(cx).languages().clone();
window.spawn(cx, async move |cx| {
let user_store = user_store.clone();
let language_registry = language_registry.clone();
let weak_workspace = workspace.clone();
cx.update(|_, cx| {
Ok(cx.new(|cx| {
ComponentPreview::new(weak_workspace, language_registry, user_store, None, cx)
}))
})?
})
}
fn cleanup(
_workspace_id: WorkspaceId,
_alive_items: Vec<ItemId>,
_window: &mut Window,
_cx: &mut App,
) -> Task<gpui::Result<()>> {
Task::ready(Ok(()))
// window.spawn(cx, |_| {
// ...
// })
}
fn serialize(
&mut self,
_workspace: &mut Workspace,
_item_id: ItemId,
_closing: bool,
_window: &mut Window,
_cx: &mut Context<Self>,
) -> Option<Task<gpui::Result<()>>> {
// TODO: Serialize the active index so we can re-open to the same place
None
}
fn should_serialize(&self, _event: &Self::Event) -> bool {
false
}
}