646 lines
21 KiB
Rust
646 lines
21 KiB
Rust
use anyhow::Result;
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use gpui::{
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actions, anchored, deferred, div, point, prelude::FluentBuilder as _, px, size, AnchorCorner,
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AnyElement, AppContext, Bounds, Context, DismissEvent, DispatchPhase, Element, ElementId,
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EventEmitter, FocusHandle, FocusableView, Global, GlobalElementId, Hitbox,
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InteractiveElement as _, IntoElement, LayoutId, ManagedView, MouseButton, MouseDownEvent,
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ParentElement, Pixels, Point, Render, Style, Styled, Subscription, View, ViewContext,
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VisualContext, WindowBackgroundAppearance, WindowContext, WindowId, WindowOptions,
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};
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use std::{cell::RefCell, rc::Rc};
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use crate::{theme::ActiveTheme, Selectable};
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actions!(popover, [Open, Dismiss]);
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pub fn init(cx: &mut AppContext) {
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cx.set_global(PopoverWindowState { window_id: None });
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}
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pub struct PopoverContent {
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focus_handle: FocusHandle,
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content: Rc<dyn Fn(&mut WindowContext) -> AnyElement>,
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}
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impl PopoverContent {
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pub fn new<B>(cx: &mut WindowContext, content: B) -> View<Self>
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where
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B: Fn(&mut WindowContext) -> AnyElement + 'static,
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{
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cx.new_view(|cx| {
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let focus_handle = cx.focus_handle();
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Self {
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focus_handle,
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content: Rc::new(content),
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}
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})
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}
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}
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impl EventEmitter<DismissEvent> for PopoverContent {}
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impl FocusableView for PopoverContent {
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fn focus_handle(&self, _cx: &AppContext) -> FocusHandle {
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self.focus_handle.clone()
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}
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}
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impl Render for PopoverContent {
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fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {
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div().p_4().max_w_128().child(self.content.clone()(cx))
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}
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}
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#[derive(Debug, Clone, Copy, PartialEq, Eq)]
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enum PopupMode {
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View,
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Window,
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}
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pub struct Popover<M: ManagedView> {
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id: ElementId,
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anchor: AnchorCorner,
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trigger: Option<Box<dyn FnOnce(bool, &WindowContext) -> AnyElement + 'static>>,
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content: Option<Rc<dyn Fn(&mut WindowContext) -> View<M> + 'static>>,
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mouse_button: MouseButton,
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mode: PopupMode,
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}
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impl<M> Popover<M>
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where
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M: ManagedView,
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{
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/// Create a new Popover with `view` mode.
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pub fn new(id: impl Into<ElementId>) -> Self {
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Self {
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id: id.into(),
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anchor: AnchorCorner::TopLeft,
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trigger: None,
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content: None,
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mouse_button: MouseButton::Left,
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mode: PopupMode::View,
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}
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}
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/// Set Popover to use Window mode
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pub fn window_mode(mut self) -> Self {
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self.mode = PopupMode::Window;
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self
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}
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pub fn anchor(mut self, anchor: AnchorCorner) -> Self {
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self.anchor = anchor;
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self
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}
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/// Set the mouse button to trigger the popover, default is `MouseButton::Left`.
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pub fn mouse_button(mut self, mouse_button: MouseButton) -> Self {
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self.mouse_button = mouse_button;
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self
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}
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pub fn trigger<T>(mut self, trigger: T) -> Self
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where
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T: Selectable + IntoElement + 'static,
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{
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self.trigger = Some(Box::new(|is_open, _| {
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trigger.selected(is_open).into_any_element()
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}));
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self
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}
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/// Set the content of the popover.
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///
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/// The `content` is a closure that returns an `AnyElement`.
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pub fn content<C>(mut self, content: C) -> Self
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where
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C: Fn(&mut WindowContext) -> View<M> + 'static,
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{
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self.content = Some(Rc::new(content));
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self
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}
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fn render_trigger(&mut self, is_open: bool, cx: &mut WindowContext) -> impl IntoElement {
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let base = div().id("popover-trigger");
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if self.trigger.is_none() {
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return base;
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}
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let trigger = self.trigger.take().unwrap();
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base.child((trigger)(is_open, cx)).into_element()
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}
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fn resolved_corner(&self, bounds: Bounds<Pixels>) -> Point<Pixels> {
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match self.anchor {
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AnchorCorner::TopLeft => AnchorCorner::BottomLeft,
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AnchorCorner::TopRight => AnchorCorner::BottomRight,
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AnchorCorner::BottomLeft => AnchorCorner::TopLeft,
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AnchorCorner::BottomRight => AnchorCorner::TopRight,
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}
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.corner(bounds)
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}
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fn with_element_state<R>(
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&mut self,
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id: &GlobalElementId,
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cx: &mut WindowContext,
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f: impl FnOnce(&mut Self, &mut PopoverElementState<M>, &mut WindowContext) -> R,
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) -> R {
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cx.with_optional_element_state::<PopoverElementState<M>, _>(
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Some(id),
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|element_state, cx| {
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let mut element_state = element_state.unwrap().unwrap_or_default();
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let result = f(self, &mut element_state, cx);
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(result, Some(element_state))
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},
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)
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}
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}
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impl<M> IntoElement for Popover<M>
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where
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M: ManagedView,
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{
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type Element = Self;
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fn into_element(self) -> Self::Element {
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self
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}
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}
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pub struct PopoverElementState<M> {
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trigger_layout_id: Option<LayoutId>,
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popover_layout_id: Option<LayoutId>,
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popover_element: Option<AnyElement>,
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trigger_element: Option<AnyElement>,
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content_view: Rc<RefCell<Option<View<M>>>>,
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/// Trigger bounds for positioning the popover.
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trigger_bounds: Option<Bounds<Pixels>>,
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}
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impl<M> Default for PopoverElementState<M> {
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fn default() -> Self {
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Self {
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trigger_layout_id: None,
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popover_layout_id: None,
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popover_element: None,
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trigger_element: None,
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content_view: Rc::new(RefCell::new(None)),
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trigger_bounds: None,
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}
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}
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}
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pub struct PrepaintState {
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hitbox: Hitbox,
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/// Trigger bounds for limit a rect to handle mouse click.
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trigger_bounds: Option<Bounds<Pixels>>,
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popover_bounds: Option<Bounds<Pixels>>,
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}
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impl<M: ManagedView> Element for Popover<M> {
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type RequestLayoutState = PopoverElementState<M>;
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type PrepaintState = PrepaintState;
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fn id(&self) -> Option<ElementId> {
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Some(self.id.clone())
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}
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fn request_layout(
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&mut self,
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id: Option<&gpui::GlobalElementId>,
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cx: &mut WindowContext,
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) -> (gpui::LayoutId, Self::RequestLayoutState) {
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let mode = self.mode;
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self.with_element_state(id.unwrap(), cx, |view, element_state, cx| {
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let mut popover_layout_id = None;
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let mut popover_element = None;
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let mut is_open = false;
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if let Some(content_view) = element_state.content_view.borrow_mut().as_mut() {
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is_open = true;
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let mut anchored = anchored().snap_to_window().anchor(view.anchor);
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if let Some(trigger_bounds) = element_state.trigger_bounds {
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anchored = anchored.position(view.resolved_corner(trigger_bounds));
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}
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let mut element = if mode == PopupMode::Window {
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// layout the content view, to let the popover know the size of the content for window size.
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anchored
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.child(
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div()
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.border_1()
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.border_color(cx.theme().border)
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.child(content_view.clone()),
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)
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.into_any()
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} else {
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let content_view_mut = element_state.content_view.clone();
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let bg_color = cx.theme().popover;
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let anchor = view.anchor;
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deferred(
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anchored.child(
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div()
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.size_full()
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.occlude()
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.border_1()
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.border_color(cx.theme().border)
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.shadow_lg()
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.rounded_lg()
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.bg(bg_color)
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.map(|this| match anchor {
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AnchorCorner::TopLeft | AnchorCorner::TopRight => this.top_2(),
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AnchorCorner::BottomLeft | AnchorCorner::BottomRight => {
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this.bottom_2()
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}
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})
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.child(content_view.clone())
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.on_mouse_down_out(move |_, cx| {
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// Update the element_state.content_view to `None`,
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// so that the `paint`` method will not paint it.
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*content_view_mut.borrow_mut() = None;
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cx.refresh();
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}),
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),
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)
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.with_priority(1)
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.into_any()
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};
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popover_layout_id = Some(element.request_layout(cx));
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popover_element = Some(element);
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}
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let mut trigger_element = view.render_trigger(is_open, cx).into_any_element();
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let trigger_layout_id = trigger_element.request_layout(cx);
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let layout_id = cx.request_layout(
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Style::default(),
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popover_layout_id.into_iter().chain(Some(trigger_layout_id)),
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);
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(
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layout_id,
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PopoverElementState {
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trigger_layout_id: Some(trigger_layout_id),
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popover_layout_id,
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popover_element,
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trigger_element: Some(trigger_element),
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..Default::default()
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},
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)
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})
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}
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fn prepaint(
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&mut self,
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_id: Option<&gpui::GlobalElementId>,
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_bounds: gpui::Bounds<gpui::Pixels>,
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request_layout: &mut Self::RequestLayoutState,
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cx: &mut WindowContext,
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) -> Self::PrepaintState {
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if let Some(element) = &mut request_layout.trigger_element {
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element.prepaint(cx);
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}
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if let Some(element) = &mut request_layout.popover_element {
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element.prepaint(cx);
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}
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let trigger_bounds = request_layout
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.trigger_layout_id
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.map(|id| cx.layout_bounds(id));
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// Prepare the popover, for get the bounds of it for open window size.
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let popover_bounds = request_layout
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.popover_layout_id
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.map(|id| cx.layout_bounds(id));
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let hitbox = cx.insert_hitbox(trigger_bounds.unwrap_or_default(), false);
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PrepaintState {
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trigger_bounds,
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popover_bounds,
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hitbox,
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}
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}
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fn paint(
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&mut self,
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id: Option<&gpui::GlobalElementId>,
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_bounds: gpui::Bounds<gpui::Pixels>,
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request_layout: &mut Self::RequestLayoutState,
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prepaint: &mut Self::PrepaintState,
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cx: &mut WindowContext,
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) {
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let anchor = self.anchor;
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let mode = self.mode;
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self.with_element_state(id.unwrap(), cx, |this, element_state, cx| {
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element_state.trigger_bounds = prepaint.trigger_bounds;
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if let Some(mut element) = request_layout.trigger_element.take() {
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element.paint(cx);
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}
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if mode == PopupMode::Window {
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if let Some(content_view) = element_state.content_view.take() {
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let popover_bounds = prepaint.popover_bounds.unwrap();
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let trigger_bounds = prepaint.trigger_bounds.unwrap();
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PopoverWindow::open_popover(
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content_view,
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trigger_bounds,
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popover_bounds,
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anchor,
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cx,
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)
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.expect("BUG: failed to open popover window.");
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return;
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}
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} else {
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if let Some(mut element) = request_layout.popover_element.take() {
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element.paint(cx);
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return;
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}
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}
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// When mouse click down in the trigger bounds, open the popover.
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let Some(content_build) = this.content.take() else {
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return;
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};
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let old_content_view = element_state.content_view.clone();
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let hitbox_id = prepaint.hitbox.id;
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let mouse_button = this.mouse_button;
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cx.on_mouse_event(move |event: &MouseDownEvent, phase, cx| {
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if phase == DispatchPhase::Bubble
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&& event.button == mouse_button
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&& hitbox_id.is_hovered(cx)
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{
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cx.stop_propagation();
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cx.prevent_default();
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let new_content_view = (content_build)(cx);
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let old_content_view1 = old_content_view.clone();
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let previous_focus_handle = cx.focused();
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cx.subscribe(&new_content_view, move |modal, _: &DismissEvent, cx| {
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if modal.focus_handle(cx).contains_focused(cx) {
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if let Some(previous_focus_handle) = previous_focus_handle.as_ref() {
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cx.focus(previous_focus_handle);
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}
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}
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*old_content_view1.borrow_mut() = None;
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close_popover(cx);
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cx.refresh();
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})
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.detach();
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cx.focus_view(&new_content_view);
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*old_content_view.borrow_mut() = Some(new_content_view);
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cx.refresh();
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}
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});
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// Click parent window to dimiss popover
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if mode == PopupMode::Window {
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let content_view = element_state.content_view.clone();
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cx.on_mouse_event(move |_: &MouseDownEvent, _, cx| {
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*content_view.borrow_mut() = None;
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close_popover(cx);
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});
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}
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});
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}
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}
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struct PopoverWindowState {
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window_id: Option<WindowId>,
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}
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impl Global for PopoverWindowState {}
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impl PopoverWindowState {
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fn window_id(cx: &AppContext) -> Option<WindowId> {
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cx.try_global::<Self>().and_then(|state| state.window_id)
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}
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fn set_window_id(window_id: WindowId, cx: &mut WindowContext) {
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cx.set_global(PopoverWindowState {
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window_id: Some(window_id),
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});
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}
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fn close_window(cx: &mut AppContext) {
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if let Some(window) = cx
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.windows()
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.into_iter()
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.find(|window| Some(window.window_id()) == PopoverWindowState::window_id(cx))
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{
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cx.update_window(window, |_, cx| {
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cx.remove_window();
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})
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.ok();
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}
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}
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}
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pub struct PopoverWindow<M: ManagedView> {
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view: View<M>,
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anchor: AnchorCorner,
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close_when_deactivate: bool,
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_subscriptions: Vec<Subscription>,
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}
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pub fn close_popover(cx: &mut AppContext) {
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PopoverWindowState::close_window(cx);
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}
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impl<M> PopoverWindow<M>
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where
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M: ManagedView,
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{
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pub fn open_popover(
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view: View<M>,
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trigger_bounds: Bounds<Pixels>,
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bounds: Bounds<Pixels>,
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anchor: AnchorCorner,
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cx: &mut WindowContext,
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) -> Result<()> {
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// Every open_popover will close the existing one
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PopoverWindowState::close_window(cx);
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let display = cx.display();
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let window_bounds = cx.bounds();
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// TODO: avoid out of the screen bounds
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let border_bounds = if cfg!(target_os = "windows") {
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Bounds {
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origin: point(px(-8.0), px(5.0)),
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size: size(px(16.0), px(8.0)),
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}
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} else {
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Bounds {
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origin: point(px(-8.0), px(0.0)),
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size: size(px(20.0), px(20.0)),
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}
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};
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let trigger_screen_bounds = Bounds {
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origin: window_bounds.origin + trigger_bounds.origin + border_bounds.origin,
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size: trigger_bounds.size,
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};
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let popover_offset = px(2.);
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let popover_origin = match anchor {
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AnchorCorner::TopLeft => {
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trigger_screen_bounds.lower_left() + point(px(0.), popover_offset)
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}
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AnchorCorner::TopRight => {
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trigger_screen_bounds.lower_right() + point(-bounds.size.width, popover_offset)
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}
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AnchorCorner::BottomLeft => {
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trigger_screen_bounds.origin
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- point(
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px(0.0),
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bounds.size.height + border_bounds.size.height + popover_offset,
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)
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}
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AnchorCorner::BottomRight => {
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trigger_screen_bounds.upper_right()
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- point(
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bounds.size.width,
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bounds.size.height + border_bounds.size.height + popover_offset,
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)
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}
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};
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let bounds = Bounds {
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origin: popover_origin,
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size: size(
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bounds.size.width + border_bounds.size.width,
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bounds.size.height + border_bounds.size.height,
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),
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};
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let view = view.clone();
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cx.spawn(|mut cx| async move {
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let window = cx
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.open_window(
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WindowOptions {
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titlebar: None,
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window_bounds: Some(gpui::WindowBounds::Windowed(bounds)),
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window_background: WindowBackgroundAppearance::Transparent,
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// NOTE: on Windows in currently must use PopUp kind, otherwise the window will be sizeable.
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// And the PopUp kind can fast open.
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kind: gpui::WindowKind::PopUp,
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is_movable: false,
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focus: true,
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show: true,
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|
display_id: display.map(|d| d.id()),
|
|
..Default::default()
|
|
},
|
|
|cx| {
|
|
let mut _subscriptions = Vec::new();
|
|
|
|
let view = cx.new_view(|cx| {
|
|
// Listen to window diactivation to close window
|
|
_subscriptions.push(
|
|
cx.observe_window_activation(Self::window_activation_changed),
|
|
);
|
|
|
|
PopoverWindow {
|
|
view,
|
|
anchor,
|
|
close_when_deactivate: true,
|
|
_subscriptions,
|
|
}
|
|
});
|
|
|
|
view
|
|
},
|
|
)
|
|
.expect("BUG: faild to create a new window.");
|
|
|
|
cx.update(|cx| {
|
|
PopoverWindowState::set_window_id(window.window_id(), cx);
|
|
})
|
|
.expect("BUG: failed to set window id.")
|
|
})
|
|
.detach();
|
|
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
impl<M> PopoverWindow<M>
|
|
where
|
|
M: ManagedView,
|
|
{
|
|
fn window_activation_changed(&mut self, cx: &mut ViewContext<Self>) {
|
|
if self.close_when_deactivate {
|
|
if !cx.is_window_active() {
|
|
self.dismiss(cx);
|
|
}
|
|
}
|
|
}
|
|
|
|
fn dismiss(&mut self, cx: &mut ViewContext<Self>) {
|
|
cx.remove_window();
|
|
}
|
|
}
|
|
|
|
impl<M> FocusableView for PopoverWindow<M>
|
|
where
|
|
M: ManagedView,
|
|
{
|
|
fn focus_handle(&self, cx: &AppContext) -> FocusHandle {
|
|
self.view.focus_handle(cx)
|
|
}
|
|
}
|
|
|
|
impl<M> Render for PopoverWindow<M>
|
|
where
|
|
M: ManagedView,
|
|
{
|
|
fn render(&mut self, cx: &mut gpui::ViewContext<Self>) -> impl IntoElement {
|
|
let is_windows = cfg!(target_os = "windows");
|
|
|
|
div()
|
|
.id("PopoverWindow")
|
|
.size_full()
|
|
.when(!is_windows, |this| this.p_2())
|
|
.when(is_windows, |this| this.bg(cx.theme().popover))
|
|
.text_color(cx.theme().popover_foreground)
|
|
// Leave margin for show window shadow
|
|
.map(|d| match self.anchor {
|
|
AnchorCorner::TopLeft | AnchorCorner::TopRight => d.mt_8(),
|
|
AnchorCorner::BottomLeft | AnchorCorner::BottomRight => d.mb_8(),
|
|
})
|
|
.child(
|
|
div()
|
|
.when(!is_windows, |this| {
|
|
this.bg(cx.theme().popover)
|
|
.border_1()
|
|
.border_color(cx.theme().border)
|
|
.shadow_lg()
|
|
.rounded_lg()
|
|
})
|
|
.bg(cx.theme().popover)
|
|
.child(self.view.clone())
|
|
.on_mouse_down(
|
|
gpui::MouseButton::Left,
|
|
cx.listener(|_, _, cx| {
|
|
cx.stop_propagation();
|
|
|
|
PopoverWindowState::close_window(cx);
|
|
}),
|
|
),
|
|
)
|
|
}
|
|
}
|