mirror of
https://github.com/zed-industries/zed.git
synced 2024-10-27 16:57:08 +00:00
380 lines
11 KiB
Rust
380 lines
11 KiB
Rust
use crate::{Autoscroll, Editor, Event, MultiBuffer, NavigationData, ToOffset, ToPoint as _};
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use anyhow::Result;
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use gpui::{
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elements::*, AppContext, Entity, ModelContext, ModelHandle, MutableAppContext, RenderContext,
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Subscription, Task, View, ViewContext, ViewHandle, WeakModelHandle,
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};
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use language::{Bias, Buffer, Diagnostic};
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use postage::watch;
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use project::worktree::File;
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use project::{Project, ProjectEntry, ProjectPath};
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use std::rc::Rc;
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use std::{fmt::Write, path::PathBuf};
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use text::{Point, Selection};
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use util::TryFutureExt;
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use workspace::{
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ItemHandle, ItemView, ItemViewHandle, NavHistory, PathOpener, Settings, StatusItemView,
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WeakItemHandle, Workspace,
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};
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pub struct BufferOpener;
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#[derive(Clone)]
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pub struct BufferItemHandle(pub ModelHandle<Buffer>);
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#[derive(Clone)]
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struct WeakBufferItemHandle(WeakModelHandle<Buffer>);
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impl PathOpener for BufferOpener {
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fn open(
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&self,
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project: &mut Project,
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project_path: ProjectPath,
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cx: &mut ModelContext<Project>,
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) -> Option<Task<Result<Box<dyn ItemHandle>>>> {
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let buffer = project.open_buffer(project_path, cx);
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let task = cx.spawn(|_, _| async move {
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let buffer = buffer.await?;
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Ok(Box::new(BufferItemHandle(buffer)) as Box<dyn ItemHandle>)
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});
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Some(task)
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}
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}
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impl ItemHandle for BufferItemHandle {
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fn add_view(
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&self,
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window_id: usize,
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workspace: &Workspace,
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nav_history: Rc<NavHistory>,
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cx: &mut MutableAppContext,
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) -> Box<dyn ItemViewHandle> {
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let buffer = cx.add_model(|cx| MultiBuffer::singleton(self.0.clone(), cx));
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let weak_buffer = buffer.downgrade();
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Box::new(cx.add_view(window_id, |cx| {
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let mut editor = Editor::for_buffer(
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buffer,
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crate::settings_builder(weak_buffer, workspace.settings()),
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cx,
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);
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editor.nav_history = Some(nav_history);
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editor
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}))
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}
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fn boxed_clone(&self) -> Box<dyn ItemHandle> {
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Box::new(self.clone())
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}
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fn to_any(&self) -> gpui::AnyModelHandle {
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self.0.clone().into()
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}
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fn downgrade(&self) -> Box<dyn workspace::WeakItemHandle> {
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Box::new(WeakBufferItemHandle(self.0.downgrade()))
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}
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fn project_entry(&self, cx: &AppContext) -> Option<ProjectEntry> {
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File::from_dyn(self.0.read(cx).file()).and_then(|f| f.project_entry(cx))
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}
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fn id(&self) -> usize {
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self.0.id()
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}
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}
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impl WeakItemHandle for WeakBufferItemHandle {
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fn upgrade(&self, cx: &AppContext) -> Option<Box<dyn ItemHandle>> {
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self.0
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.upgrade(cx)
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.map(|buffer| Box::new(BufferItemHandle(buffer)) as Box<dyn ItemHandle>)
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}
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fn id(&self) -> usize {
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self.0.id()
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}
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}
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impl ItemView for Editor {
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type ItemHandle = BufferItemHandle;
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fn item_handle(&self, cx: &AppContext) -> Self::ItemHandle {
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BufferItemHandle(self.buffer.read(cx).as_singleton().unwrap())
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}
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fn navigate(&mut self, data: Box<dyn std::any::Any>, cx: &mut ViewContext<Self>) {
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if let Some(data) = data.downcast_ref::<NavigationData>() {
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let buffer = self.buffer.read(cx).read(cx);
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let offset = if buffer.can_resolve(&data.anchor) {
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data.anchor.to_offset(&buffer)
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} else {
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buffer.clip_offset(data.offset, Bias::Left)
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};
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drop(buffer);
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let nav_history = self.nav_history.take();
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self.select_ranges([offset..offset], Some(Autoscroll::Fit), cx);
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self.nav_history = nav_history;
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}
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}
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fn title(&self, cx: &AppContext) -> String {
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let filename = self
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.buffer()
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.read(cx)
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.file(cx)
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.and_then(|file| file.file_name());
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if let Some(name) = filename {
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name.to_string_lossy().into()
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} else {
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"untitled".into()
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}
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}
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fn project_entry(&self, cx: &AppContext) -> Option<ProjectEntry> {
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File::from_dyn(self.buffer().read(cx).file(cx)).and_then(|file| file.project_entry(cx))
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}
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fn clone_on_split(&self, cx: &mut ViewContext<Self>) -> Option<Self>
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where
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Self: Sized,
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{
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Some(self.clone(cx))
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}
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fn deactivated(&mut self, cx: &mut ViewContext<Self>) {
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if let Some(selection) = self.newest_selection_internal() {
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self.push_to_nav_history(selection.head(), None, cx);
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}
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}
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fn is_dirty(&self, cx: &AppContext) -> bool {
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self.buffer().read(cx).read(cx).is_dirty()
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}
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fn has_conflict(&self, cx: &AppContext) -> bool {
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self.buffer().read(cx).read(cx).has_conflict()
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}
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fn can_save(&self, cx: &AppContext) -> bool {
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self.project_entry(cx).is_some()
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}
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fn save(&mut self, cx: &mut ViewContext<Self>) -> Result<Task<Result<()>>> {
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let buffer = self.buffer().clone();
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Ok(cx.spawn(|editor, mut cx| async move {
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buffer
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.update(&mut cx, |buffer, cx| buffer.format(cx).log_err())
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.await;
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editor.update(&mut cx, |editor, cx| {
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editor.request_autoscroll(Autoscroll::Fit, cx)
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});
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buffer
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.update(&mut cx, |buffer, cx| buffer.save(cx))?
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.await?;
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Ok(())
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}))
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}
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fn can_save_as(&self, _: &AppContext) -> bool {
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true
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}
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fn save_as(
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&mut self,
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project: ModelHandle<Project>,
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abs_path: PathBuf,
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cx: &mut ViewContext<Self>,
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) -> Task<Result<()>> {
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let buffer = self
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.buffer()
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.read(cx)
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.as_singleton()
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.expect("cannot call save_as on an excerpt list")
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.clone();
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project.update(cx, |project, cx| {
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project.save_buffer_as(buffer, abs_path, cx)
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})
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}
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fn should_activate_item_on_event(event: &Event) -> bool {
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matches!(event, Event::Activate)
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}
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fn should_close_item_on_event(event: &Event) -> bool {
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matches!(event, Event::Closed)
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}
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fn should_update_tab_on_event(event: &Event) -> bool {
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matches!(
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event,
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Event::Saved | Event::Dirtied | Event::FileHandleChanged
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)
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}
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}
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pub struct CursorPosition {
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position: Option<Point>,
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selected_count: usize,
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settings: watch::Receiver<Settings>,
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_observe_active_editor: Option<Subscription>,
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}
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impl CursorPosition {
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pub fn new(settings: watch::Receiver<Settings>) -> Self {
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Self {
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position: None,
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selected_count: 0,
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settings,
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_observe_active_editor: None,
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}
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}
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fn update_position(&mut self, editor: ViewHandle<Editor>, cx: &mut ViewContext<Self>) {
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let editor = editor.read(cx);
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let buffer = editor.buffer().read(cx).snapshot(cx);
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self.selected_count = 0;
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let mut last_selection: Option<Selection<usize>> = None;
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for selection in editor.local_selections::<usize>(cx) {
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self.selected_count += selection.end - selection.start;
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if last_selection
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.as_ref()
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.map_or(true, |last_selection| selection.id > last_selection.id)
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{
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last_selection = Some(selection);
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}
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}
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self.position = last_selection.map(|s| s.head().to_point(&buffer));
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cx.notify();
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}
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}
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impl Entity for CursorPosition {
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type Event = ();
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}
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impl View for CursorPosition {
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fn ui_name() -> &'static str {
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"CursorPosition"
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}
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fn render(&mut self, _: &mut RenderContext<Self>) -> ElementBox {
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if let Some(position) = self.position {
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let theme = &self.settings.borrow().theme.workspace.status_bar;
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let mut text = format!("{},{}", position.row + 1, position.column + 1);
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if self.selected_count > 0 {
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write!(text, " ({} selected)", self.selected_count).unwrap();
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}
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Label::new(text, theme.cursor_position.clone()).boxed()
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} else {
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Empty::new().boxed()
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}
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}
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}
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impl StatusItemView for CursorPosition {
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fn set_active_pane_item(
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&mut self,
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active_pane_item: Option<&dyn ItemViewHandle>,
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cx: &mut ViewContext<Self>,
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) {
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if let Some(editor) = active_pane_item.and_then(|item| item.to_any().downcast::<Editor>()) {
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self._observe_active_editor = Some(cx.observe(&editor, Self::update_position));
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self.update_position(editor, cx);
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} else {
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self.position = None;
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self._observe_active_editor = None;
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}
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cx.notify();
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}
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}
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pub struct DiagnosticMessage {
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settings: watch::Receiver<Settings>,
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diagnostic: Option<Diagnostic>,
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_observe_active_editor: Option<Subscription>,
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}
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impl DiagnosticMessage {
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pub fn new(settings: watch::Receiver<Settings>) -> Self {
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Self {
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diagnostic: None,
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settings,
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_observe_active_editor: None,
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}
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}
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fn update(&mut self, editor: ViewHandle<Editor>, cx: &mut ViewContext<Self>) {
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let editor = editor.read(cx);
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let buffer = editor.buffer().read(cx);
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let cursor_position = editor.newest_selection::<usize>(&buffer.read(cx)).head();
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let new_diagnostic = buffer
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.read(cx)
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.diagnostics_in_range::<_, usize>(cursor_position..cursor_position)
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.filter(|entry| !entry.range.is_empty())
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.min_by_key(|entry| (entry.diagnostic.severity, entry.range.len()))
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.map(|entry| entry.diagnostic);
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if new_diagnostic != self.diagnostic {
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self.diagnostic = new_diagnostic;
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cx.notify();
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}
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}
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}
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impl Entity for DiagnosticMessage {
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type Event = ();
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}
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impl View for DiagnosticMessage {
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fn ui_name() -> &'static str {
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"DiagnosticMessage"
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}
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fn render(&mut self, _: &mut RenderContext<Self>) -> ElementBox {
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if let Some(diagnostic) = &self.diagnostic {
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let theme = &self.settings.borrow().theme.workspace.status_bar;
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Flex::row()
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.with_child(
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Svg::new("icons/warning.svg")
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.with_color(theme.diagnostic_icon_color)
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.constrained()
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.with_height(theme.diagnostic_icon_size)
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.contained()
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.with_margin_right(theme.diagnostic_icon_spacing)
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.boxed(),
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)
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.with_child(
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Label::new(
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diagnostic.message.lines().next().unwrap().to_string(),
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theme.diagnostic_message.clone(),
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)
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.boxed(),
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)
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.boxed()
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} else {
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Empty::new().boxed()
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}
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}
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}
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impl StatusItemView for DiagnosticMessage {
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fn set_active_pane_item(
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&mut self,
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active_pane_item: Option<&dyn ItemViewHandle>,
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cx: &mut ViewContext<Self>,
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) {
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if let Some(editor) = active_pane_item.and_then(|item| item.to_any().downcast::<Editor>()) {
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self._observe_active_editor = Some(cx.observe(&editor, Self::update));
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self.update(editor, cx);
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} else {
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self.diagnostic = Default::default();
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self._observe_active_editor = None;
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}
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cx.notify();
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}
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}
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