144 lines
3.9 KiB
Rust
144 lines
3.9 KiB
Rust
use std::marker::PhantomData;
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use gpui2::{hsla, red, AnyElement, ElementId, ExternalPaths, Hsla, Length, Size};
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use smallvec::SmallVec;
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use crate::prelude::*;
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#[derive(Default, PartialEq)]
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pub enum SplitDirection {
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#[default]
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Horizontal,
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Vertical,
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}
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#[derive(Element)]
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pub struct Pane<S: 'static + Send + Sync> {
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id: ElementId,
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state_type: PhantomData<S>,
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size: Size<Length>,
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fill: Hsla,
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children: SmallVec<[AnyElement<S>; 2]>,
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}
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impl<S: 'static + Send + Sync> Pane<S> {
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pub fn new(id: impl Into<ElementId>, size: Size<Length>) -> Self {
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// Fill is only here for debugging purposes, remove before release
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Self {
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id: id.into(),
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state_type: PhantomData,
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size,
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fill: hsla(0.3, 0.3, 0.3, 1.),
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// fill: system_color.transparent,
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children: SmallVec::new(),
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}
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}
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pub fn fill(mut self, fill: Hsla) -> Self {
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self.fill = fill;
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self
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}
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fn render(&mut self, view: &mut S, cx: &mut ViewContext<S>) -> impl Element<ViewState = S> {
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div()
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.id(self.id.clone())
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.flex()
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.flex_initial()
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.bg(self.fill)
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.w(self.size.width)
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.h(self.size.height)
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.relative()
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.child(
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div()
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.z_index(0)
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.size_full()
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.children(self.children.drain(..)),
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)
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.child(
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// TODO kb! Figure out why we can't we see the red background when we drag a file over this div.
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div()
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.z_index(1)
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.id("drag-target")
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.drag_over::<ExternalPaths>(|d| d.bg(red()))
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.on_drop(|_, files: ExternalPaths, _| {
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dbg!("dropped files!", files);
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})
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.absolute()
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.inset_0(),
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)
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}
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}
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impl<S: 'static + Send + Sync> ParentElement for Pane<S> {
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fn children_mut(&mut self) -> &mut SmallVec<[AnyElement<Self::ViewState>; 2]> {
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&mut self.children
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}
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}
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#[derive(Element)]
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pub struct PaneGroup<S: 'static + Send + Sync> {
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state_type: PhantomData<S>,
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groups: Vec<PaneGroup<S>>,
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panes: Vec<Pane<S>>,
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split_direction: SplitDirection,
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}
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impl<S: 'static + Send + Sync> PaneGroup<S> {
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pub fn new_groups(groups: Vec<PaneGroup<S>>, split_direction: SplitDirection) -> Self {
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Self {
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state_type: PhantomData,
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groups,
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panes: Vec::new(),
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split_direction,
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}
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}
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pub fn new_panes(panes: Vec<Pane<S>>, split_direction: SplitDirection) -> Self {
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Self {
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state_type: PhantomData,
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groups: Vec::new(),
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panes,
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split_direction,
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}
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}
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fn render(&mut self, view: &mut S, cx: &mut ViewContext<S>) -> impl Element<ViewState = S> {
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let theme = theme(cx);
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if !self.panes.is_empty() {
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let el = div()
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.flex()
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.flex_1()
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.gap_px()
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.w_full()
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.h_full()
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.children(self.panes.iter_mut().map(|pane| pane.render(view, cx)));
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if self.split_direction == SplitDirection::Horizontal {
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return el;
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} else {
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return el.flex_col();
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}
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}
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if !self.groups.is_empty() {
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let el = div()
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.flex()
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.flex_1()
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.gap_px()
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.w_full()
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.h_full()
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.bg(theme.editor)
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.children(self.groups.iter_mut().map(|group| group.render(view, cx)));
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if self.split_direction == SplitDirection::Horizontal {
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return el;
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} else {
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return el.flex_col();
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}
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}
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unreachable!()
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}
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}
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