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zed/crates/workspace/src/pane.rs

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mod dragged_item_receiver;
use super::{ItemHandle, SplitDirection};
use crate::{
dock::{icon_for_dock_anchor, AnchorDockBottom, AnchorDockRight, Dock, ExpandDock},
item::WeakItemHandle,
toolbar::Toolbar,
Item, NewFile, NewSearch, NewTerminal, Workspace,
};
use anyhow::{anyhow, Result};
use collections::{HashMap, HashSet, VecDeque};
use context_menu::{ContextMenu, ContextMenuItem};
use drag_and_drop::Draggable;
pub use dragged_item_receiver::{dragged_item_receiver, handle_dropped_item};
use futures::StreamExt;
use gpui::{
actions,
elements::*,
geometry::{
rect::RectF,
vector::{vec2f, Vector2F},
},
impl_actions,
keymap_matcher::KeymapContext,
platform::{CursorStyle, MouseButton, NavigationDirection, PromptLevel},
Action, AnyViewHandle, AnyWeakViewHandle, AppContext, AsyncAppContext, Entity, EventContext,
ModelHandle, MouseRegion, Quad, Task, View, ViewContext, ViewHandle, WeakViewHandle,
WindowContext,
};
use project::{Project, ProjectEntryId, ProjectPath};
use serde::Deserialize;
use settings::{Autosave, DockAnchor, Settings};
use std::{any::Any, cell::RefCell, cmp, mem, path::Path, rc::Rc};
use theme::Theme;
use util::ResultExt;
#[derive(Clone, Deserialize, PartialEq)]
pub struct ActivateItem(pub usize);
#[derive(Clone, PartialEq)]
pub struct CloseItemById {
pub item_id: usize,
pub pane: WeakViewHandle<Pane>,
}
#[derive(Clone, PartialEq)]
pub struct CloseItemsToTheLeftById {
pub item_id: usize,
pub pane: WeakViewHandle<Pane>,
}
#[derive(Clone, PartialEq)]
pub struct CloseItemsToTheRightById {
pub item_id: usize,
pub pane: WeakViewHandle<Pane>,
}
actions!(
pane,
[
ActivatePrevItem,
ActivateNextItem,
ActivateLastItem,
CloseActiveItem,
CloseInactiveItems,
CloseCleanItems,
CloseItemsToTheLeft,
CloseItemsToTheRight,
CloseAllItems,
ReopenClosedItem,
SplitLeft,
SplitUp,
SplitRight,
SplitDown,
]
);
#[derive(Clone, Deserialize, PartialEq)]
pub struct GoBack {
#[serde(skip_deserializing)]
pub pane: Option<WeakViewHandle<Pane>>,
}
#[derive(Clone, Deserialize, PartialEq)]
pub struct GoForward {
#[serde(skip_deserializing)]
pub pane: Option<WeakViewHandle<Pane>>,
}
impl_actions!(pane, [GoBack, GoForward, ActivateItem]);
const MAX_NAVIGATION_HISTORY_LEN: usize = 1024;
pub type BackgroundActions = fn() -> &'static [(&'static str, &'static dyn Action)];
pub fn init(cx: &mut AppContext) {
cx.add_action(|pane: &mut Pane, action: &ActivateItem, cx| {
pane.activate_item(action.0, true, true, cx);
});
cx.add_action(|pane: &mut Pane, _: &ActivateLastItem, cx| {
pane.activate_item(pane.items.len() - 1, true, true, cx);
});
cx.add_action(|pane: &mut Pane, _: &ActivatePrevItem, cx| {
pane.activate_prev_item(true, cx);
});
cx.add_action(|pane: &mut Pane, _: &ActivateNextItem, cx| {
pane.activate_next_item(true, cx);
});
cx.add_async_action(Pane::close_active_item);
cx.add_async_action(Pane::close_inactive_items);
cx.add_async_action(Pane::close_clean_items);
cx.add_async_action(Pane::close_items_to_the_left);
cx.add_async_action(Pane::close_items_to_the_right);
cx.add_async_action(Pane::close_all_items);
cx.add_action(|pane: &mut Pane, _: &SplitLeft, cx| pane.split(SplitDirection::Left, cx));
cx.add_action(|pane: &mut Pane, _: &SplitUp, cx| pane.split(SplitDirection::Up, cx));
cx.add_action(|pane: &mut Pane, _: &SplitRight, cx| pane.split(SplitDirection::Right, cx));
cx.add_action(|pane: &mut Pane, _: &SplitDown, cx| pane.split(SplitDirection::Down, cx));
cx.add_action(|workspace: &mut Workspace, _: &ReopenClosedItem, cx| {
Pane::reopen_closed_item(workspace, cx).detach();
});
cx.add_action(|workspace: &mut Workspace, action: &GoBack, cx| {
Pane::go_back(workspace, action.pane.clone(), cx).detach();
});
cx.add_action(|workspace: &mut Workspace, action: &GoForward, cx| {
Pane::go_forward(workspace, action.pane.clone(), cx).detach();
});
}
#[derive(Debug)]
pub enum Event {
ActivateItem { local: bool },
Remove,
RemoveItem { item_id: usize },
Split(SplitDirection),
ChangeItemTitle,
}
pub struct Pane {
items: Vec<Box<dyn ItemHandle>>,
activation_history: Vec<usize>,
is_active: bool,
active_item_index: usize,
last_focused_view_by_item: HashMap<usize, AnyWeakViewHandle>,
autoscroll: bool,
nav_history: Rc<RefCell<NavHistory>>,
toolbar: ViewHandle<Toolbar>,
tab_bar_context_menu: TabBarContextMenu,
tab_context_menu: ViewHandle<ContextMenu>,
docked: Option<DockAnchor>,
_background_actions: BackgroundActions,
workspace: WeakViewHandle<Workspace>,
}
pub struct ItemNavHistory {
history: Rc<RefCell<NavHistory>>,
item: Rc<dyn WeakItemHandle>,
}
struct NavHistory {
mode: NavigationMode,
backward_stack: VecDeque<NavigationEntry>,
forward_stack: VecDeque<NavigationEntry>,
closed_stack: VecDeque<NavigationEntry>,
paths_by_item: HashMap<usize, ProjectPath>,
pane: WeakViewHandle<Pane>,
}
#[derive(Copy, Clone)]
enum NavigationMode {
Normal,
GoingBack,
GoingForward,
ClosingItem,
ReopeningClosedItem,
Disabled,
}
impl Default for NavigationMode {
fn default() -> Self {
Self::Normal
}
}
pub struct NavigationEntry {
pub item: Rc<dyn WeakItemHandle>,
pub data: Option<Box<dyn Any>>,
}
struct DraggedItem {
item: Box<dyn ItemHandle>,
pane: WeakViewHandle<Pane>,
}
pub enum ReorderBehavior {
None,
MoveAfterActive,
MoveToIndex(usize),
}
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
enum TabBarContextMenuKind {
New,
Split,
Dock,
}
struct TabBarContextMenu {
kind: TabBarContextMenuKind,
handle: ViewHandle<ContextMenu>,
}
impl TabBarContextMenu {
fn handle_if_kind(&self, kind: TabBarContextMenuKind) -> Option<ViewHandle<ContextMenu>> {
if self.kind == kind {
return Some(self.handle.clone());
}
None
}
}
impl Pane {
pub fn new(
workspace: WeakViewHandle<Workspace>,
docked: Option<DockAnchor>,
background_actions: BackgroundActions,
cx: &mut ViewContext<Self>,
) -> Self {
let handle = cx.weak_handle();
let context_menu = cx.add_view(ContextMenu::new);
context_menu.update(cx, |menu, _| {
menu.set_position_mode(OverlayPositionMode::Local)
});
Self {
items: Vec::new(),
activation_history: Vec::new(),
is_active: true,
active_item_index: 0,
last_focused_view_by_item: Default::default(),
autoscroll: false,
nav_history: Rc::new(RefCell::new(NavHistory {
mode: NavigationMode::Normal,
backward_stack: Default::default(),
forward_stack: Default::default(),
closed_stack: Default::default(),
paths_by_item: Default::default(),
pane: handle.clone(),
})),
toolbar: cx.add_view(|_| Toolbar::new(handle)),
tab_bar_context_menu: TabBarContextMenu {
kind: TabBarContextMenuKind::New,
handle: context_menu,
},
tab_context_menu: cx.add_view(ContextMenu::new),
docked,
_background_actions: background_actions,
workspace,
}
}
pub(crate) fn workspace(&self) -> &WeakViewHandle<Workspace> {
&self.workspace
}
pub fn is_active(&self) -> bool {
self.is_active
}
pub fn set_active(&mut self, is_active: bool, cx: &mut ViewContext<Self>) {
self.is_active = is_active;
cx.notify();
}
pub fn set_docked(&mut self, docked: Option<DockAnchor>, cx: &mut ViewContext<Self>) {
self.docked = docked;
cx.notify();
}
pub fn nav_history_for_item<T: Item>(&self, item: &ViewHandle<T>) -> ItemNavHistory {
ItemNavHistory {
history: self.nav_history.clone(),
item: Rc::new(item.downgrade()),
}
}
pub fn go_back(
workspace: &mut Workspace,
pane: Option<WeakViewHandle<Pane>>,
cx: &mut ViewContext<Workspace>,
) -> Task<Result<()>> {
Self::navigate_history(
workspace,
pane.unwrap_or_else(|| workspace.active_pane().downgrade()),
NavigationMode::GoingBack,
cx,
)
}
pub fn go_forward(
workspace: &mut Workspace,
pane: Option<WeakViewHandle<Pane>>,
cx: &mut ViewContext<Workspace>,
) -> Task<Result<()>> {
Self::navigate_history(
workspace,
pane.unwrap_or_else(|| workspace.active_pane().downgrade()),
NavigationMode::GoingForward,
cx,
)
}
pub fn reopen_closed_item(
workspace: &mut Workspace,
cx: &mut ViewContext<Workspace>,
) -> Task<Result<()>> {
Self::navigate_history(
workspace,
workspace.active_pane().downgrade(),
NavigationMode::ReopeningClosedItem,
cx,
)
}
pub fn disable_history(&mut self) {
self.nav_history.borrow_mut().disable();
}
pub fn enable_history(&mut self) {
self.nav_history.borrow_mut().enable();
}
pub fn can_navigate_backward(&self) -> bool {
!self.nav_history.borrow().backward_stack.is_empty()
}
pub fn can_navigate_forward(&self) -> bool {
!self.nav_history.borrow().forward_stack.is_empty()
}
fn history_updated(&mut self, cx: &mut ViewContext<Self>) {
self.toolbar.update(cx, |_, cx| cx.notify());
}
fn navigate_history(
workspace: &mut Workspace,
pane: WeakViewHandle<Pane>,
mode: NavigationMode,
cx: &mut ViewContext<Workspace>,
) -> Task<Result<()>> {
let to_load = if let Some(pane) = pane.upgrade(cx) {
cx.focus(&pane);
pane.update(cx, |pane, cx| {
loop {
// Retrieve the weak item handle from the history.
let entry = pane.nav_history.borrow_mut().pop(mode, cx)?;
// If the item is still present in this pane, then activate it.
if let Some(index) = entry
.item
.upgrade(cx)
.and_then(|v| pane.index_for_item(v.as_ref()))
{
let prev_active_item_index = pane.active_item_index;
pane.nav_history.borrow_mut().set_mode(mode);
pane.activate_item(index, true, true, cx);
pane.nav_history
.borrow_mut()
.set_mode(NavigationMode::Normal);
let mut navigated = prev_active_item_index != pane.active_item_index;
if let Some(data) = entry.data {
navigated |= pane.active_item()?.navigate(data, cx);
}
if navigated {
break None;
}
}
// If the item is no longer present in this pane, then retrieve its
// project path in order to reopen it.
else {
break pane
.nav_history
.borrow()
.paths_by_item
.get(&entry.item.id())
.cloned()
.map(|project_path| (project_path, entry));
}
}
})
} else {
None
};
if let Some((project_path, entry)) = to_load {
// If the item was no longer present, then load it again from its previous path.
let task = workspace.load_path(project_path, cx);
cx.spawn(|workspace, mut cx| async move {
let task = task.await;
let mut navigated = false;
if let Some((project_entry_id, build_item)) = task.log_err() {
let prev_active_item_id = pane.update(&mut cx, |pane, _| {
pane.nav_history.borrow_mut().set_mode(mode);
pane.active_item().map(|p| p.id())
})?;
let item = workspace.update(&mut cx, |workspace, cx| {
let pane = pane
.upgrade(cx)
.ok_or_else(|| anyhow!("pane was dropped"))?;
anyhow::Ok(Self::open_item(
workspace,
pane.clone(),
project_entry_id,
true,
cx,
build_item,
))
})??;
pane.update(&mut cx, |pane, cx| {
navigated |= Some(item.id()) != prev_active_item_id;
pane.nav_history
.borrow_mut()
.set_mode(NavigationMode::Normal);
if let Some(data) = entry.data {
navigated |= item.navigate(data, cx);
}
})?;
}
if !navigated {
workspace
.update(&mut cx, |workspace, cx| {
Self::navigate_history(workspace, pane, mode, cx)
})?
.await?;
}
Ok(())
})
} else {
Task::ready(Ok(()))
}
}
pub(crate) fn open_item(
workspace: &mut Workspace,
pane: ViewHandle<Pane>,
project_entry_id: ProjectEntryId,
focus_item: bool,
cx: &mut ViewContext<Workspace>,
build_item: impl FnOnce(&mut ViewContext<Pane>) -> Box<dyn ItemHandle>,
) -> Box<dyn ItemHandle> {
let existing_item = pane.update(cx, |pane, cx| {
for (index, item) in pane.items.iter().enumerate() {
if item.is_singleton(cx)
&& item.project_entry_ids(cx).as_slice() == [project_entry_id]
{
let item = item.boxed_clone();
return Some((index, item));
}
}
None
});
if let Some((index, existing_item)) = existing_item {
pane.update(cx, |pane, cx| {
pane.activate_item(index, focus_item, focus_item, cx);
});
existing_item
} else {
let new_item = pane.update(cx, |_, cx| build_item(cx));
Pane::add_item(
workspace,
&pane,
new_item.clone(),
true,
focus_item,
None,
cx,
);
new_item
}
}
pub(crate) fn add_item(
workspace: &mut Workspace,
pane: &ViewHandle<Pane>,
item: Box<dyn ItemHandle>,
activate_pane: bool,
focus_item: bool,
destination_index: Option<usize>,
cx: &mut ViewContext<Workspace>,
) {
// If no destination index is specified, add or move the item after the active item.
let mut insertion_index = {
let pane = pane.read(cx);
cmp::min(
if let Some(destination_index) = destination_index {
destination_index
} else {
pane.active_item_index + 1
},
pane.items.len(),
)
};
item.added_to_pane(workspace, pane.clone(), cx);
// Does the item already exist?
let project_entry_id = if item.is_singleton(cx) {
item.project_entry_ids(cx).get(0).copied()
} else {
None
};
let existing_item_index = pane.read(cx).items.iter().position(|existing_item| {
if existing_item.id() == item.id() {
true
} else if existing_item.is_singleton(cx) {
existing_item
.project_entry_ids(cx)
.get(0)
.map_or(false, |existing_entry_id| {
Some(existing_entry_id) == project_entry_id.as_ref()
})
} else {
false
}
});
if let Some(existing_item_index) = existing_item_index {
// If the item already exists, move it to the desired destination and activate it
pane.update(cx, |pane, cx| {
if existing_item_index != insertion_index {
cx.reparent(item.as_any());
let existing_item_is_active = existing_item_index == pane.active_item_index;
// If the caller didn't specify a destination and the added item is already
// the active one, don't move it
if existing_item_is_active && destination_index.is_none() {
insertion_index = existing_item_index;
} else {
pane.items.remove(existing_item_index);
if existing_item_index < pane.active_item_index {
pane.active_item_index -= 1;
}
insertion_index = insertion_index.min(pane.items.len());
pane.items.insert(insertion_index, item.clone());
if existing_item_is_active {
pane.active_item_index = insertion_index;
} else if insertion_index <= pane.active_item_index {
pane.active_item_index += 1;
}
}
cx.notify();
}
pane.activate_item(insertion_index, activate_pane, focus_item, cx);
});
} else {
pane.update(cx, |pane, cx| {
cx.reparent(item.as_any());
pane.items.insert(insertion_index, item);
if insertion_index <= pane.active_item_index {
pane.active_item_index += 1;
}
pane.activate_item(insertion_index, activate_pane, focus_item, cx);
cx.notify();
});
}
}
pub fn items_len(&self) -> usize {
self.items.len()
}
pub fn items(&self) -> impl Iterator<Item = &Box<dyn ItemHandle>> + DoubleEndedIterator {
self.items.iter()
}
pub fn items_of_type<T: View>(&self) -> impl '_ + Iterator<Item = ViewHandle<T>> {
self.items
.iter()
.filter_map(|item| item.as_any().clone().downcast())
}
pub fn active_item(&self) -> Option<Box<dyn ItemHandle>> {
self.items.get(self.active_item_index).cloned()
}
pub fn item_for_entry(
&self,
entry_id: ProjectEntryId,
cx: &AppContext,
) -> Option<Box<dyn ItemHandle>> {
self.items.iter().find_map(|item| {
if item.is_singleton(cx) && item.project_entry_ids(cx).as_slice() == [entry_id] {
Some(item.boxed_clone())
} else {
None
}
})
}
pub fn index_for_item(&self, item: &dyn ItemHandle) -> Option<usize> {
self.items.iter().position(|i| i.id() == item.id())
}
pub fn activate_item(
&mut self,
index: usize,
activate_pane: bool,
focus_item: bool,
cx: &mut ViewContext<Self>,
) {
use NavigationMode::{GoingBack, GoingForward};
if index < self.items.len() {
let prev_active_item_ix = mem::replace(&mut self.active_item_index, index);
if prev_active_item_ix != self.active_item_index
|| matches!(self.nav_history.borrow().mode, GoingBack | GoingForward)
{
if let Some(prev_item) = self.items.get(prev_active_item_ix) {
prev_item.deactivated(cx);
}
cx.emit(Event::ActivateItem {
local: activate_pane,
});
}
if let Some(newly_active_item) = self.items.get(index) {
self.activation_history
.retain(|&previously_active_item_id| {
previously_active_item_id != newly_active_item.id()
});
self.activation_history.push(newly_active_item.id());
}
self.update_toolbar(cx);
if focus_item {
self.focus_active_item(cx);
}
self.autoscroll = true;
cx.notify();
}
}
pub fn activate_prev_item(&mut self, activate_pane: bool, cx: &mut ViewContext<Self>) {
let mut index = self.active_item_index;
if index > 0 {
index -= 1;
} else if !self.items.is_empty() {
index = self.items.len() - 1;
}
self.activate_item(index, activate_pane, activate_pane, cx);
}
pub fn activate_next_item(&mut self, activate_pane: bool, cx: &mut ViewContext<Self>) {
let mut index = self.active_item_index;
if index + 1 < self.items.len() {
index += 1;
} else {
index = 0;
}
self.activate_item(index, activate_pane, activate_pane, cx);
}
pub fn close_active_item(
workspace: &mut Workspace,
_: &CloseActiveItem,
cx: &mut ViewContext<Workspace>,
) -> Option<Task<Result<()>>> {
let pane_handle = workspace.active_pane().clone();
let pane = pane_handle.read(cx);
if pane.items.is_empty() {
return None;
}
let active_item_id = pane.items[pane.active_item_index].id();
let task = Self::close_item_by_id(workspace, pane_handle, active_item_id, cx);
Some(cx.foreground().spawn(async move {
task.await?;
Ok(())
}))
}
pub fn close_item_by_id(
workspace: &mut Workspace,
pane: ViewHandle<Pane>,
item_id_to_close: usize,
cx: &mut ViewContext<Workspace>,
) -> Task<Result<()>> {
Self::close_items(workspace, pane, cx, move |view_id| {
view_id == item_id_to_close
})
}
pub fn close_inactive_items(
workspace: &mut Workspace,
_: &CloseInactiveItems,
cx: &mut ViewContext<Workspace>,
) -> Option<Task<Result<()>>> {
let pane_handle = workspace.active_pane().clone();
let pane = pane_handle.read(cx);
let active_item_id = pane.items[pane.active_item_index].id();
let task = Self::close_items(workspace, pane_handle, cx, move |item_id| {
item_id != active_item_id
});
Some(cx.foreground().spawn(async move {
task.await?;
Ok(())
}))
}
pub fn close_clean_items(
workspace: &mut Workspace,
_: &CloseCleanItems,
cx: &mut ViewContext<Workspace>,
) -> Option<Task<Result<()>>> {
let pane_handle = workspace.active_pane().clone();
let pane = pane_handle.read(cx);
let item_ids: Vec<_> = pane
.items()
.filter(|item| !item.is_dirty(cx))
.map(|item| item.id())
.collect();
let task = Self::close_items(workspace, pane_handle, cx, move |item_id| {
item_ids.contains(&item_id)
});
Some(cx.foreground().spawn(async move {
task.await?;
Ok(())
}))
}
pub fn close_items_to_the_left(
workspace: &mut Workspace,
_: &CloseItemsToTheLeft,
cx: &mut ViewContext<Workspace>,
) -> Option<Task<Result<()>>> {
let pane_handle = workspace.active_pane().clone();
let pane = pane_handle.read(cx);
let active_item_id = pane.items[pane.active_item_index].id();
let task = Self::close_items_to_the_left_by_id(workspace, pane_handle, active_item_id, cx);
Some(cx.foreground().spawn(async move {
task.await?;
Ok(())
}))
}
pub fn close_items_to_the_left_by_id(
workspace: &mut Workspace,
pane: ViewHandle<Pane>,
item_id: usize,
cx: &mut ViewContext<Workspace>,
) -> Task<Result<()>> {
let item_ids: Vec<_> = pane
.read(cx)
.items()
.take_while(|item| item.id() != item_id)
.map(|item| item.id())
.collect();
let task = Self::close_items(workspace, pane, cx, move |item_id| {
item_ids.contains(&item_id)
});
cx.foreground().spawn(async move {
task.await?;
Ok(())
})
}
pub fn close_items_to_the_right(
workspace: &mut Workspace,
_: &CloseItemsToTheRight,
cx: &mut ViewContext<Workspace>,
) -> Option<Task<Result<()>>> {
let pane_handle = workspace.active_pane().clone();
let pane = pane_handle.read(cx);
let active_item_id = pane.items[pane.active_item_index].id();
let task = Self::close_items_to_the_right_by_id(workspace, pane_handle, active_item_id, cx);
Some(cx.foreground().spawn(async move {
task.await?;
Ok(())
}))
}
pub fn close_items_to_the_right_by_id(
workspace: &mut Workspace,
pane: ViewHandle<Pane>,
item_id: usize,
cx: &mut ViewContext<Workspace>,
) -> Task<Result<()>> {
let item_ids: Vec<_> = pane
.read(cx)
.items()
.rev()
.take_while(|item| item.id() != item_id)
.map(|item| item.id())
.collect();
let task = Self::close_items(workspace, pane, cx, move |item_id| {
item_ids.contains(&item_id)
});
cx.foreground().spawn(async move {
task.await?;
Ok(())
})
}
pub fn close_all_items(
workspace: &mut Workspace,
_: &CloseAllItems,
cx: &mut ViewContext<Workspace>,
) -> Option<Task<Result<()>>> {
let pane_handle = workspace.active_pane().clone();
let task = Self::close_items(workspace, pane_handle, cx, move |_| true);
Some(cx.foreground().spawn(async move {
task.await?;
Ok(())
}))
}
pub fn close_items(
workspace: &mut Workspace,
pane: ViewHandle<Pane>,
cx: &mut ViewContext<Workspace>,
should_close: impl 'static + Fn(usize) -> bool,
) -> Task<Result<()>> {
let project = workspace.project().clone();
// Find the items to close.
let mut items_to_close = Vec::new();
for item in &pane.read(cx).items {
if should_close(item.id()) {
items_to_close.push(item.boxed_clone());
}
}
// If a buffer is open both in a singleton editor and in a multibuffer, make sure
// to focus the singleton buffer when prompting to save that buffer, as opposed
// to focusing the multibuffer, because this gives the user a more clear idea
// of what content they would be saving.
items_to_close.sort_by_key(|item| !item.is_singleton(cx));
let pane = pane.downgrade();
cx.spawn(|workspace, mut cx| async move {
let mut saved_project_items_ids = HashSet::default();
for item in items_to_close.clone() {
// Find the item's current index and its set of project item models. Avoid
// storing these in advance, in case they have changed since this task
// was started.
let (item_ix, mut project_item_ids) = pane.read_with(&cx, |pane, cx| {
(pane.index_for_item(&*item), item.project_item_model_ids(cx))
})?;
let item_ix = if let Some(ix) = item_ix {
ix
} else {
continue;
};
// Check if this view has any project items that are not open anywhere else
// in the workspace, AND that the user has not already been prompted to save.
// If there are any such project entries, prompt the user to save this item.
workspace.read_with(&cx, |workspace, cx| {
for item in workspace.items(cx) {
if !items_to_close
.iter()
.any(|item_to_close| item_to_close.id() == item.id())
{
let other_project_item_ids = item.project_item_model_ids(cx);
project_item_ids.retain(|id| !other_project_item_ids.contains(id));
}
}
})?;
let should_save = project_item_ids
.iter()
.any(|id| saved_project_items_ids.insert(*id));
if should_save
&& !Self::save_item(project.clone(), &pane, item_ix, &*item, true, &mut cx)
.await?
{
break;
}
// Remove the item from the pane.
pane.update(&mut cx, |pane, cx| {
if let Some(item_ix) = pane.items.iter().position(|i| i.id() == item.id()) {
pane.remove_item(item_ix, false, cx);
}
})?;
}
pane.update(&mut cx, |_, cx| cx.notify())?;
Ok(())
})
}
fn remove_item(&mut self, item_index: usize, activate_pane: bool, cx: &mut ViewContext<Self>) {
self.activation_history
.retain(|&history_entry| history_entry != self.items[item_index].id());
if item_index == self.active_item_index {
let index_to_activate = self
.activation_history
.pop()
.and_then(|last_activated_item| {
self.items.iter().enumerate().find_map(|(index, item)| {
(item.id() == last_activated_item).then_some(index)
})
})
// We didn't have a valid activation history entry, so fallback
// to activating the item to the left
.unwrap_or_else(|| item_index.min(self.items.len()).saturating_sub(1));
self.activate_item(index_to_activate, activate_pane, activate_pane, cx);
}
let item = self.items.remove(item_index);
cx.emit(Event::RemoveItem { item_id: item.id() });
if self.items.is_empty() {
item.deactivated(cx);
self.update_toolbar(cx);
cx.emit(Event::Remove);
}
if item_index < self.active_item_index {
self.active_item_index -= 1;
}
self.nav_history
.borrow_mut()
.set_mode(NavigationMode::ClosingItem);
item.deactivated(cx);
self.nav_history
.borrow_mut()
.set_mode(NavigationMode::Normal);
if let Some(path) = item.project_path(cx) {
self.nav_history
.borrow_mut()
.paths_by_item
.insert(item.id(), path);
} else {
self.nav_history
.borrow_mut()
.paths_by_item
.remove(&item.id());
}
cx.notify();
}
pub async fn save_item(
project: ModelHandle<Project>,
pane: &WeakViewHandle<Pane>,
item_ix: usize,
item: &dyn ItemHandle,
should_prompt_for_save: bool,
cx: &mut AsyncAppContext,
) -> Result<bool> {
const CONFLICT_MESSAGE: &str =
"This file has changed on disk since you started editing it. Do you want to overwrite it?";
const DIRTY_MESSAGE: &str = "This file contains unsaved edits. Do you want to save it?";
let (has_conflict, is_dirty, can_save, is_singleton) = cx.read(|cx| {
(
item.has_conflict(cx),
item.is_dirty(cx),
item.can_save(cx),
item.is_singleton(cx),
)
});
if has_conflict && can_save {
let mut answer = pane.update(cx, |pane, cx| {
pane.activate_item(item_ix, true, true, cx);
cx.prompt(
PromptLevel::Warning,
CONFLICT_MESSAGE,
&["Overwrite", "Discard", "Cancel"],
)
})?;
match answer.next().await {
Some(0) => pane.update(cx, |_, cx| item.save(project, cx))?.await?,
Some(1) => pane.update(cx, |_, cx| item.reload(project, cx))?.await?,
_ => return Ok(false),
}
} else if is_dirty && (can_save || is_singleton) {
let will_autosave = cx.read(|cx| {
matches!(
cx.global::<Settings>().autosave,
Autosave::OnFocusChange | Autosave::OnWindowChange
) && Self::can_autosave_item(&*item, cx)
});
let should_save = if should_prompt_for_save && !will_autosave {
let mut answer = pane.update(cx, |pane, cx| {
pane.activate_item(item_ix, true, true, cx);
cx.prompt(
PromptLevel::Warning,
DIRTY_MESSAGE,
&["Save", "Don't Save", "Cancel"],
)
})?;
match answer.next().await {
Some(0) => true,
Some(1) => false,
_ => return Ok(false),
}
} else {
true
};
if should_save {
if can_save {
pane.update(cx, |_, cx| item.save(project, cx))?.await?;
} else if is_singleton {
let start_abs_path = project
.read_with(cx, |project, cx| {
let worktree = project.visible_worktrees(cx).next()?;
Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
})
.unwrap_or_else(|| Path::new("").into());
let mut abs_path = cx.update(|cx| cx.prompt_for_new_path(&start_abs_path));
if let Some(abs_path) = abs_path.next().await.flatten() {
pane.update(cx, |_, cx| item.save_as(project, abs_path, cx))?
.await?;
} else {
return Ok(false);
}
}
}
}
Ok(true)
}
fn can_autosave_item(item: &dyn ItemHandle, cx: &AppContext) -> bool {
let is_deleted = item.project_entry_ids(cx).is_empty();
item.is_dirty(cx) && !item.has_conflict(cx) && item.can_save(cx) && !is_deleted
}
pub fn autosave_item(
item: &dyn ItemHandle,
project: ModelHandle<Project>,
cx: &mut WindowContext,
) -> Task<Result<()>> {
if Self::can_autosave_item(item, cx) {
item.save(project, cx)
} else {
Task::ready(Ok(()))
}
}
pub fn focus_active_item(&mut self, cx: &mut ViewContext<Self>) {
if let Some(active_item) = self.active_item() {
cx.focus(active_item.as_any());
}
}
pub fn move_item(
workspace: &mut Workspace,
from: ViewHandle<Pane>,
to: ViewHandle<Pane>,
item_id_to_move: usize,
destination_index: usize,
cx: &mut ViewContext<Workspace>,
) {
let item_to_move = from
.read(cx)
.items()
.enumerate()
.find(|(_, item_handle)| item_handle.id() == item_id_to_move);
if item_to_move.is_none() {
log::warn!("Tried to move item handle which was not in `from` pane. Maybe tab was closed during drop");
return;
}
let (item_ix, item_handle) = item_to_move.unwrap();
let item_handle = item_handle.clone();
if from != to {
// Close item from previous pane
from.update(cx, |from, cx| {
from.remove_item(item_ix, false, cx);
});
}
// This automatically removes duplicate items in the pane
Pane::add_item(
workspace,
&to,
item_handle,
true,
true,
Some(destination_index),
cx,
);
cx.focus(&to);
}
pub fn split(&mut self, direction: SplitDirection, cx: &mut ViewContext<Self>) {
cx.emit(Event::Split(direction));
}
fn deploy_split_menu(&mut self, cx: &mut ViewContext<Self>) {
self.tab_bar_context_menu.handle.update(cx, |menu, cx| {
menu.show(
Default::default(),
AnchorCorner::TopRight,
vec![
ContextMenuItem::action("Split Right", SplitRight),
ContextMenuItem::action("Split Left", SplitLeft),
ContextMenuItem::action("Split Up", SplitUp),
ContextMenuItem::action("Split Down", SplitDown),
],
cx,
);
});
self.tab_bar_context_menu.kind = TabBarContextMenuKind::Split;
}
fn deploy_dock_menu(&mut self, cx: &mut ViewContext<Self>) {
self.tab_bar_context_menu.handle.update(cx, |menu, cx| {
menu.show(
Default::default(),
AnchorCorner::TopRight,
vec![
ContextMenuItem::action("Anchor Dock Right", AnchorDockRight),
ContextMenuItem::action("Anchor Dock Bottom", AnchorDockBottom),
ContextMenuItem::action("Expand Dock", ExpandDock),
],
cx,
);
});
self.tab_bar_context_menu.kind = TabBarContextMenuKind::Dock;
}
fn deploy_new_menu(&mut self, cx: &mut ViewContext<Self>) {
self.tab_bar_context_menu.handle.update(cx, |menu, cx| {
menu.show(
Default::default(),
AnchorCorner::TopRight,
vec![
ContextMenuItem::action("New File", NewFile),
ContextMenuItem::action("New Terminal", NewTerminal),
ContextMenuItem::action("New Search", NewSearch),
],
cx,
);
});
self.tab_bar_context_menu.kind = TabBarContextMenuKind::New;
}
fn deploy_tab_context_menu(
&mut self,
position: Vector2F,
target_item_id: usize,
cx: &mut ViewContext<Self>,
) {
let active_item_id = self.items[self.active_item_index].id();
let is_active_item = target_item_id == active_item_id;
let target_pane = cx.weak_handle();
// The `CloseInactiveItems` action should really be called "CloseOthers" and the behaviour should be dynamically based on the tab the action is ran on. Currenlty, this is a weird action because you can run it on a non-active tab and it will close everything by the actual active tab
self.tab_context_menu.update(cx, |menu, cx| {
menu.show(
position,
AnchorCorner::TopLeft,
if is_active_item {
vec![
ContextMenuItem::action("Close Active Item", CloseActiveItem),
ContextMenuItem::action("Close Inactive Items", CloseInactiveItems),
ContextMenuItem::action("Close Clean Items", CloseCleanItems),
ContextMenuItem::action("Close Items To The Left", CloseItemsToTheLeft),
ContextMenuItem::action("Close Items To The Right", CloseItemsToTheRight),
ContextMenuItem::action("Close All Items", CloseAllItems),
]
} else {
// In the case of the user right clicking on a non-active tab, for some item-closing commands, we need to provide the id of the tab, for the others, we can reuse the existing command.
vec![
ContextMenuItem::handler("Close Inactive Item", {
let workspace = self.workspace.clone();
let pane = target_pane.clone();
move |cx| {
if let Some((workspace, pane)) =
workspace.upgrade(cx).zip(pane.upgrade(cx))
{
workspace.update(cx, |workspace, cx| {
Self::close_item_by_id(workspace, pane, target_item_id, cx)
.detach_and_log_err(cx);
})
}
}
}),
ContextMenuItem::action("Close Inactive Items", CloseInactiveItems),
ContextMenuItem::action("Close Clean Items", CloseCleanItems),
ContextMenuItem::handler("Close Items To The Left", {
let workspace = self.workspace.clone();
let pane = target_pane.clone();
move |cx| {
if let Some((workspace, pane)) =
workspace.upgrade(cx).zip(pane.upgrade(cx))
{
workspace.update(cx, |workspace, cx| {
Self::close_items_to_the_left_by_id(
workspace,
pane,
target_item_id,
cx,
)
.detach_and_log_err(cx);
})
}
}
}),
ContextMenuItem::handler("Close Items To The Right", {
let workspace = self.workspace.clone();
let pane = target_pane.clone();
move |cx| {
if let Some((workspace, pane)) =
workspace.upgrade(cx).zip(pane.upgrade(cx))
{
workspace.update(cx, |workspace, cx| {
Self::close_items_to_the_right_by_id(
workspace,
pane,
target_item_id,
cx,
)
.detach_and_log_err(cx);
})
}
}
}),
ContextMenuItem::action("Close All Items", CloseAllItems),
]
},
cx,
);
});
}
pub fn toolbar(&self) -> &ViewHandle<Toolbar> {
&self.toolbar
}
fn update_toolbar(&mut self, cx: &mut ViewContext<Self>) {
let active_item = self
.items
.get(self.active_item_index)
.map(|item| item.as_ref());
self.toolbar.update(cx, |toolbar, cx| {
toolbar.set_active_pane_item(active_item, cx);
});
}
fn render_tabs(&mut self, cx: &mut ViewContext<Self>) -> impl Element<Self> {
let theme = cx.global::<Settings>().theme.clone();
let pane = cx.handle().downgrade();
let autoscroll = if mem::take(&mut self.autoscroll) {
Some(self.active_item_index)
} else {
None
};
let pane_active = self.is_active;
enum Tabs {}
let mut row = Flex::row().scrollable::<Tabs>(1, autoscroll, cx);
for (ix, (item, detail)) in self
.items
.iter()
.cloned()
.zip(self.tab_details(cx))
.enumerate()
{
let detail = if detail == 0 { None } else { Some(detail) };
let tab_active = ix == self.active_item_index;
row.add_child({
enum TabDragReceiver {}
let mut receiver =
dragged_item_receiver::<TabDragReceiver, _, _>(ix, ix, true, None, cx, {
let item = item.clone();
let pane = pane.clone();
let detail = detail.clone();
let theme = cx.global::<Settings>().theme.clone();
let mut tooltip_theme = theme.tooltip.clone();
tooltip_theme.max_text_width = None;
let tab_tooltip_text = item.tab_tooltip_text(cx).map(|a| a.to_string());
move |mouse_state, cx| {
let tab_style =
theme.workspace.tab_bar.tab_style(pane_active, tab_active);
let hovered = mouse_state.hovered();
enum Tab {}
let mouse_event_handler =
MouseEventHandler::<Tab, Pane>::new(ix, cx, |_, cx| {
Self::render_tab(
&item,
pane.clone(),
ix == 0,
detail,
hovered,
tab_style,
cx,
)
})
.on_down(MouseButton::Left, move |_, this, cx| {
this.activate_item(ix, true, true, cx);
})
.on_click(MouseButton::Middle, {
let item_id = item.id();
move |_, pane, cx| {
let workspace = pane.workspace.clone();
let pane = cx.weak_handle();
cx.window_context().defer(move |cx| {
if let Some((workspace, pane)) =
workspace.upgrade(cx).zip(pane.upgrade(cx))
{
workspace.update(cx, |workspace, cx| {
Self::close_item_by_id(
workspace, pane, item_id, cx,
)
.detach_and_log_err(cx);
});
}
});
}
})
.on_down(
MouseButton::Right,
move |event, pane, cx| {
pane.deploy_tab_context_menu(event.position, item.id(), cx);
},
);
if let Some(tab_tooltip_text) = tab_tooltip_text {
mouse_event_handler
.with_tooltip::<Self>(
ix,
tab_tooltip_text,
None,
tooltip_theme,
cx,
)
.into_any()
} else {
mouse_event_handler.into_any()
}
}
});
if !pane_active || !tab_active {
receiver = receiver.with_cursor_style(CursorStyle::PointingHand);
}
receiver.as_draggable(
DraggedItem {
item,
pane: pane.clone(),
},
{
let theme = cx.global::<Settings>().theme.clone();
let detail = detail.clone();
move |dragged_item: &DraggedItem, cx: &mut ViewContext<Workspace>| {
let tab_style = &theme.workspace.tab_bar.dragged_tab;
Self::render_dragged_tab(
&dragged_item.item,
dragged_item.pane.clone(),
false,
detail,
false,
&tab_style,
cx,
)
}
},
)
})
}
// Use the inactive tab style along with the current pane's active status to decide how to render
// the filler
let filler_index = self.items.len();
let filler_style = theme.workspace.tab_bar.tab_style(pane_active, false);
enum Filler {}
row.add_child(
dragged_item_receiver::<Filler, _, _>(0, filler_index, true, None, cx, |_, _| {
Empty::new()
.contained()
.with_style(filler_style.container)
.with_border(filler_style.container.border)
})
.flex(1., true)
.into_any_named("filler"),
);
row
}
fn tab_details(&self, cx: &AppContext) -> Vec<usize> {
let mut tab_details = (0..self.items.len()).map(|_| 0).collect::<Vec<_>>();
let mut tab_descriptions = HashMap::default();
let mut done = false;
while !done {
done = true;
// Store item indices by their tab description.
for (ix, (item, detail)) in self.items.iter().zip(&tab_details).enumerate() {
if let Some(description) = item.tab_description(*detail, cx) {
if *detail == 0
|| Some(&description) != item.tab_description(detail - 1, cx).as_ref()
{
tab_descriptions
.entry(description)
.or_insert(Vec::new())
.push(ix);
}
}
}
// If two or more items have the same tab description, increase their level
// of detail and try again.
for (_, item_ixs) in tab_descriptions.drain() {
if item_ixs.len() > 1 {
done = false;
for ix in item_ixs {
tab_details[ix] += 1;
}
}
}
}
tab_details
}
fn render_tab(
item: &Box<dyn ItemHandle>,
pane: WeakViewHandle<Pane>,
first: bool,
detail: Option<usize>,
hovered: bool,
tab_style: &theme::Tab,
cx: &mut ViewContext<Self>,
) -> AnyElement<Self> {
let title = item.tab_content(detail, &tab_style, cx);
Self::render_tab_with_title(title, item, pane, first, hovered, tab_style, cx)
}
fn render_dragged_tab(
item: &Box<dyn ItemHandle>,
pane: WeakViewHandle<Pane>,
first: bool,
detail: Option<usize>,
hovered: bool,
tab_style: &theme::Tab,
cx: &mut ViewContext<Workspace>,
) -> AnyElement<Workspace> {
let title = item.dragged_tab_content(detail, &tab_style, cx);
Self::render_tab_with_title(title, item, pane, first, hovered, tab_style, cx)
}
fn render_tab_with_title<T: View>(
title: AnyElement<T>,
item: &Box<dyn ItemHandle>,
pane: WeakViewHandle<Pane>,
first: bool,
hovered: bool,
tab_style: &theme::Tab,
cx: &mut ViewContext<T>,
) -> AnyElement<T> {
let mut container = tab_style.container.clone();
if first {
container.border.left = false;
}
Flex::row()
.with_child({
let diameter = 7.0;
let icon_color = if item.has_conflict(cx) {
Some(tab_style.icon_conflict)
} else if item.is_dirty(cx) {
Some(tab_style.icon_dirty)
} else {
None
};
Canvas::new(move |scene, bounds, _, _, _| {
if let Some(color) = icon_color {
let square = RectF::new(bounds.origin(), vec2f(diameter, diameter));
scene.push_quad(Quad {
bounds: square,
background: Some(color),
border: Default::default(),
corner_radius: diameter / 2.,
});
}
})
.constrained()
.with_width(diameter)
.with_height(diameter)
.aligned()
})
.with_child(title.aligned().contained().with_style(ContainerStyle {
margin: Margin {
left: tab_style.spacing,
right: tab_style.spacing,
..Default::default()
},
..Default::default()
}))
.with_child(
if hovered {
let item_id = item.id();
enum TabCloseButton {}
let icon = Svg::new("icons/x_mark_8.svg");
MouseEventHandler::<TabCloseButton, _>::new(item_id, cx, |mouse_state, _| {
if mouse_state.hovered() {
icon.with_color(tab_style.icon_close_active)
} else {
icon.with_color(tab_style.icon_close)
}
})
.with_padding(Padding::uniform(4.))
.with_cursor_style(CursorStyle::PointingHand)
.on_click(MouseButton::Left, {
let pane = pane.clone();
move |_, _, cx| {
let pane = pane.clone();
cx.window_context().defer(move |cx| {
if let Some(pane) = pane.upgrade(cx) {
if let Some(workspace) = pane.read(cx).workspace.upgrade(cx) {
workspace.update(cx, |workspace, cx| {
Self::close_item_by_id(workspace, pane, item_id, cx)
.detach_and_log_err(cx);
});
}
}
});
}
})
.into_any_named("close-tab-icon")
.constrained()
} else {
Empty::new().constrained()
}
.with_width(tab_style.close_icon_width)
.aligned(),
)
.contained()
.with_style(container)
.constrained()
.with_height(tab_style.height)
.into_any()
}
fn render_tab_bar_buttons(
&mut self,
theme: &Theme,
cx: &mut ViewContext<Self>,
) -> AnyElement<Self> {
Flex::row()
// New menu
.with_child(render_tab_bar_button(
0,
"icons/plus_12.svg",
cx,
|pane, cx| pane.deploy_new_menu(cx),
self.tab_bar_context_menu
.handle_if_kind(TabBarContextMenuKind::New),
))
.with_child(
self.docked
.map(|anchor| {
// Add the dock menu button if this pane is a dock
let dock_icon = icon_for_dock_anchor(anchor);
render_tab_bar_button(
1,
dock_icon,
cx,
|pane, cx| pane.deploy_dock_menu(cx),
self.tab_bar_context_menu
.handle_if_kind(TabBarContextMenuKind::Dock),
)
})
.unwrap_or_else(|| {
// Add the split menu if this pane is not a dock
render_tab_bar_button(
2,
"icons/split_12.svg",
cx,
|pane, cx| pane.deploy_split_menu(cx),
self.tab_bar_context_menu
.handle_if_kind(TabBarContextMenuKind::Split),
)
}),
)
// Add the close dock button if this pane is a dock
.with_children(self.docked.map(|_| {
render_tab_bar_button(
3,
"icons/x_mark_8.svg",
cx,
|this, cx| {
if let Some(workspace) = this.workspace.upgrade(cx) {
cx.window_context().defer(move |cx| {
workspace.update(cx, |workspace, cx| {
Dock::hide_dock(workspace, &Default::default(), cx)
})
});
}
},
None,
)
}))
.contained()
.with_style(theme.workspace.tab_bar.pane_button_container)
.flex(1., false)
.into_any()
}
fn render_blank_pane(
&mut self,
theme: &Theme,
_cx: &mut ViewContext<Self>,
) -> AnyElement<Self> {
let background = theme.workspace.background;
Empty::new()
.contained()
.with_background_color(background)
.into_any()
}
}
impl Entity for Pane {
type Event = Event;
}
impl View for Pane {
fn ui_name() -> &'static str {
"Pane"
}
fn render(&mut self, cx: &mut ViewContext<Self>) -> AnyElement<Self> {
enum MouseNavigationHandler {}
MouseEventHandler::<MouseNavigationHandler, _>::new(0, cx, |_, cx| {
let active_item_index = self.active_item_index;
if let Some(active_item) = self.active_item() {
Flex::column()
.with_child({
let theme = cx.global::<Settings>().theme.clone();
let mut stack = Stack::new();
enum TabBarEventHandler {}
stack.add_child(
MouseEventHandler::<TabBarEventHandler, _>::new(0, cx, |_, _| {
Empty::new()
.contained()
.with_style(theme.workspace.tab_bar.container)
})
.on_down(
MouseButton::Left,
move |_, this, cx| {
this.activate_item(active_item_index, true, true, cx);
},
),
);
let mut tab_row = Flex::row()
.with_child(self.render_tabs(cx).flex(1., true).into_any_named("tabs"));
if self.is_active {
tab_row.add_child(self.render_tab_bar_buttons(&theme, cx))
}
stack.add_child(tab_row);
stack
.constrained()
.with_height(theme.workspace.tab_bar.height)
.flex(1., false)
.into_any_named("tab bar")
})
.with_child({
enum PaneContentTabDropTarget {}
dragged_item_receiver::<PaneContentTabDropTarget, _, _>(
0,
self.active_item_index + 1,
false,
if self.docked.is_some() {
None
} else {
Some(100.)
},
cx,
{
let toolbar = self.toolbar.clone();
let toolbar_hidden = toolbar.read(cx).hidden();
move |_, cx| {
Flex::column()
.with_children(
(!toolbar_hidden)
.then(|| ChildView::new(&toolbar, cx).expanded()),
)
.with_child(
ChildView::new(active_item.as_any(), cx).flex(1., true),
)
}
},
)
.flex(1., true)
})
.with_child(ChildView::new(&self.tab_context_menu, cx))
.into_any()
} else {
enum EmptyPane {}
let theme = cx.global::<Settings>().theme.clone();
dragged_item_receiver::<EmptyPane, _, _>(0, 0, false, None, cx, |_, cx| {
self.render_blank_pane(&theme, cx)
})
.on_down(MouseButton::Left, |_, _, cx| {
cx.focus_parent_view();
})
.into_any()
}
})
.on_down(
MouseButton::Navigate(NavigationDirection::Back),
move |_, pane, cx| {
if let Some(workspace) = pane.workspace.upgrade(cx) {
let pane = cx.weak_handle();
cx.window_context().defer(move |cx| {
workspace.update(cx, |workspace, cx| {
Pane::go_back(workspace, Some(pane), cx).detach_and_log_err(cx)
})
})
}
},
)
.on_down(MouseButton::Navigate(NavigationDirection::Forward), {
move |_, pane, cx| {
if let Some(workspace) = pane.workspace.upgrade(cx) {
let pane = cx.weak_handle();
cx.window_context().defer(move |cx| {
workspace.update(cx, |workspace, cx| {
Pane::go_forward(workspace, Some(pane), cx).detach_and_log_err(cx)
})
})
}
}
})
.into_any_named("pane")
}
fn focus_in(&mut self, focused: AnyViewHandle, cx: &mut ViewContext<Self>) {
self.toolbar.update(cx, |toolbar, cx| {
toolbar.pane_focus_update(true, cx);
});
if let Some(active_item) = self.active_item() {
if cx.is_self_focused() {
// Pane was focused directly. We need to either focus a view inside the active item,
// or focus the active item itself
if let Some(weak_last_focused_view) =
self.last_focused_view_by_item.get(&active_item.id())
{
if let Some(last_focused_view) = weak_last_focused_view.upgrade(cx) {
cx.focus(&last_focused_view);
return;
} else {
self.last_focused_view_by_item.remove(&active_item.id());
}
}
cx.focus(active_item.as_any());
} else if focused != self.tab_bar_context_menu.handle {
self.last_focused_view_by_item
.insert(active_item.id(), focused.downgrade());
}
}
}
fn focus_out(&mut self, _: AnyViewHandle, cx: &mut ViewContext<Self>) {
self.toolbar.update(cx, |toolbar, cx| {
toolbar.pane_focus_update(false, cx);
});
}
fn keymap_context(&self, _: &AppContext) -> KeymapContext {
let mut keymap = Self::default_keymap_context();
if self.docked.is_some() {
keymap.add_identifier("docked");
}
keymap
}
}
fn render_tab_bar_button<F: 'static + Fn(&mut Pane, &mut EventContext<Pane>)>(
index: usize,
icon: &'static str,
cx: &mut ViewContext<Pane>,
on_click: F,
context_menu: Option<ViewHandle<ContextMenu>>,
) -> AnyElement<Pane> {
enum TabBarButton {}
Stack::new()
.with_child(
MouseEventHandler::<TabBarButton, _>::new(index, cx, |mouse_state, cx| {
let theme = &cx.global::<Settings>().theme.workspace.tab_bar;
let style = theme.pane_button.style_for(mouse_state, false);
Svg::new(icon)
.with_color(style.color)
.constrained()
.with_width(style.icon_width)
.aligned()
.constrained()
.with_width(style.button_width)
.with_height(style.button_width)
})
.with_cursor_style(CursorStyle::PointingHand)
.on_click(MouseButton::Left, move |_, pane, cx| on_click(pane, cx)),
)
.with_children(
context_menu.map(|menu| ChildView::new(&menu, cx).aligned().bottom().right()),
)
.flex(1., false)
.into_any_named("tab bar button")
}
impl ItemNavHistory {
pub fn push<D: 'static + Any>(&self, data: Option<D>, cx: &mut WindowContext) {
self.history.borrow_mut().push(data, self.item.clone(), cx);
}
pub fn pop_backward(&self, cx: &mut WindowContext) -> Option<NavigationEntry> {
self.history.borrow_mut().pop(NavigationMode::GoingBack, cx)
}
pub fn pop_forward(&self, cx: &mut WindowContext) -> Option<NavigationEntry> {
self.history
.borrow_mut()
.pop(NavigationMode::GoingForward, cx)
}
}
impl NavHistory {
fn set_mode(&mut self, mode: NavigationMode) {
self.mode = mode;
}
fn disable(&mut self) {
self.mode = NavigationMode::Disabled;
}
fn enable(&mut self) {
self.mode = NavigationMode::Normal;
}
fn pop(&mut self, mode: NavigationMode, cx: &mut WindowContext) -> Option<NavigationEntry> {
let entry = match mode {
NavigationMode::Normal | NavigationMode::Disabled | NavigationMode::ClosingItem => {
return None
}
NavigationMode::GoingBack => &mut self.backward_stack,
NavigationMode::GoingForward => &mut self.forward_stack,
NavigationMode::ReopeningClosedItem => &mut self.closed_stack,
}
.pop_back();
if entry.is_some() {
self.did_update(cx);
}
entry
}
fn push<D: 'static + Any>(
&mut self,
data: Option<D>,
item: Rc<dyn WeakItemHandle>,
cx: &mut WindowContext,
) {
match self.mode {
NavigationMode::Disabled => {}
NavigationMode::Normal | NavigationMode::ReopeningClosedItem => {
if self.backward_stack.len() >= MAX_NAVIGATION_HISTORY_LEN {
self.backward_stack.pop_front();
}
self.backward_stack.push_back(NavigationEntry {
item,
data: data.map(|data| Box::new(data) as Box<dyn Any>),
});
self.forward_stack.clear();
}
NavigationMode::GoingBack => {
if self.forward_stack.len() >= MAX_NAVIGATION_HISTORY_LEN {
self.forward_stack.pop_front();
}
self.forward_stack.push_back(NavigationEntry {
item,
data: data.map(|data| Box::new(data) as Box<dyn Any>),
});
}
NavigationMode::GoingForward => {
if self.backward_stack.len() >= MAX_NAVIGATION_HISTORY_LEN {
self.backward_stack.pop_front();
}
self.backward_stack.push_back(NavigationEntry {
item,
data: data.map(|data| Box::new(data) as Box<dyn Any>),
});
}
NavigationMode::ClosingItem => {
if self.closed_stack.len() >= MAX_NAVIGATION_HISTORY_LEN {
self.closed_stack.pop_front();
}
self.closed_stack.push_back(NavigationEntry {
item,
data: data.map(|data| Box::new(data) as Box<dyn Any>),
});
}
}
self.did_update(cx);
}
fn did_update(&self, cx: &mut WindowContext) {
if let Some(pane) = self.pane.upgrade(cx) {
cx.defer(move |cx| {
pane.update(cx, |pane, cx| pane.history_updated(cx));
});
}
}
}
pub struct PaneBackdrop<V: View> {
child_view: usize,
child: AnyElement<V>,
}
impl<V: View> PaneBackdrop<V> {
pub fn new(pane_item_view: usize, child: AnyElement<V>) -> Self {
PaneBackdrop {
child,
child_view: pane_item_view,
}
}
}
impl<V: View> Element<V> for PaneBackdrop<V> {
type LayoutState = ();
type PaintState = ();
fn layout(
&mut self,
constraint: gpui::SizeConstraint,
view: &mut V,
cx: &mut ViewContext<V>,
) -> (Vector2F, Self::LayoutState) {
let size = self.child.layout(constraint, view, cx);
(size, ())
}
fn paint(
&mut self,
scene: &mut gpui::SceneBuilder,
bounds: RectF,
visible_bounds: RectF,
_: &mut Self::LayoutState,
view: &mut V,
cx: &mut ViewContext<V>,
) -> Self::PaintState {
let background = cx.global::<Settings>().theme.editor.background;
let visible_bounds = bounds.intersection(visible_bounds).unwrap_or_default();
scene.push_quad(gpui::Quad {
bounds: RectF::new(bounds.origin(), bounds.size()),
background: Some(background),
..Default::default()
});
let child_view_id = self.child_view;
scene.push_mouse_region(
MouseRegion::new::<Self>(child_view_id, 0, visible_bounds).on_down(
gpui::platform::MouseButton::Left,
move |_, _: &mut V, cx| {
let window_id = cx.window_id();
cx.app_context().focus(window_id, Some(child_view_id))
},
),
);
scene.paint_layer(Some(bounds), |scene| {
self.child
.paint(scene, bounds.origin(), visible_bounds, view, cx)
})
}
fn rect_for_text_range(
&self,
range_utf16: std::ops::Range<usize>,
_bounds: RectF,
_visible_bounds: RectF,
_layout: &Self::LayoutState,
_paint: &Self::PaintState,
view: &V,
cx: &gpui::ViewContext<V>,
) -> Option<RectF> {
self.child.rect_for_text_range(range_utf16, view, cx)
}
fn debug(
&self,
_bounds: RectF,
_layout: &Self::LayoutState,
_paint: &Self::PaintState,
view: &V,
cx: &gpui::ViewContext<V>,
) -> serde_json::Value {
gpui::json::json!({
"type": "Pane Back Drop",
"view": self.child_view,
"child": self.child.debug(view, cx),
})
}
}
#[cfg(test)]
mod tests {
use std::sync::Arc;
use super::*;
use crate::item::test::{TestItem, TestProjectItem};
use gpui::{executor::Deterministic, TestAppContext};
use project::FakeFs;
#[gpui::test]
async fn test_remove_active_empty(cx: &mut TestAppContext) {
Settings::test_async(cx);
let fs = FakeFs::new(cx.background());
let project = Project::test(fs, None, cx).await;
let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
workspace.update(cx, |workspace, cx| {
assert!(Pane::close_active_item(workspace, &CloseActiveItem, cx).is_none())
});
}
#[gpui::test]
async fn test_add_item_with_new_item(cx: &mut TestAppContext) {
cx.foreground().forbid_parking();
Settings::test_async(cx);
let fs = FakeFs::new(cx.background());
let project = Project::test(fs, None, cx).await;
let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
// 1. Add with a destination index
// a. Add before the active item
set_labeled_items(&workspace, &pane, ["A", "B*", "C"], cx);
workspace.update(cx, |workspace, cx| {
Pane::add_item(
workspace,
&pane,
Box::new(cx.add_view(|_| TestItem::new().with_label("D"))),
false,
false,
Some(0),
cx,
);
});
assert_item_labels(&pane, ["D*", "A", "B", "C"], cx);
// b. Add after the active item
set_labeled_items(&workspace, &pane, ["A", "B*", "C"], cx);
workspace.update(cx, |workspace, cx| {
Pane::add_item(
workspace,
&pane,
Box::new(cx.add_view(|_| TestItem::new().with_label("D"))),
false,
false,
Some(2),
cx,
);
});
assert_item_labels(&pane, ["A", "B", "D*", "C"], cx);
// c. Add at the end of the item list (including off the length)
set_labeled_items(&workspace, &pane, ["A", "B*", "C"], cx);
workspace.update(cx, |workspace, cx| {
Pane::add_item(
workspace,
&pane,
Box::new(cx.add_view(|_| TestItem::new().with_label("D"))),
false,
false,
Some(5),
cx,
);
});
assert_item_labels(&pane, ["A", "B", "C", "D*"], cx);
// 2. Add without a destination index
// a. Add with active item at the start of the item list
set_labeled_items(&workspace, &pane, ["A*", "B", "C"], cx);
workspace.update(cx, |workspace, cx| {
Pane::add_item(
workspace,
&pane,
Box::new(cx.add_view(|_| TestItem::new().with_label("D"))),
false,
false,
None,
cx,
);
});
set_labeled_items(&workspace, &pane, ["A", "D*", "B", "C"], cx);
// b. Add with active item at the end of the item list
set_labeled_items(&workspace, &pane, ["A", "B", "C*"], cx);
workspace.update(cx, |workspace, cx| {
Pane::add_item(
workspace,
&pane,
Box::new(cx.add_view(|_| TestItem::new().with_label("D"))),
false,
false,
None,
cx,
);
});
assert_item_labels(&pane, ["A", "B", "C", "D*"], cx);
}
#[gpui::test]
async fn test_add_item_with_existing_item(cx: &mut TestAppContext) {
cx.foreground().forbid_parking();
Settings::test_async(cx);
let fs = FakeFs::new(cx.background());
let project = Project::test(fs, None, cx).await;
let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
// 1. Add with a destination index
// 1a. Add before the active item
let [_, _, _, d] = set_labeled_items(&workspace, &pane, ["A", "B*", "C", "D"], cx);
workspace.update(cx, |workspace, cx| {
Pane::add_item(workspace, &pane, d, false, false, Some(0), cx);
});
assert_item_labels(&pane, ["D*", "A", "B", "C"], cx);
// 1b. Add after the active item
let [_, _, _, d] = set_labeled_items(&workspace, &pane, ["A", "B*", "C", "D"], cx);
workspace.update(cx, |workspace, cx| {
Pane::add_item(workspace, &pane, d, false, false, Some(2), cx);
});
assert_item_labels(&pane, ["A", "B", "D*", "C"], cx);
// 1c. Add at the end of the item list (including off the length)
let [a, _, _, _] = set_labeled_items(&workspace, &pane, ["A", "B*", "C", "D"], cx);
workspace.update(cx, |workspace, cx| {
Pane::add_item(workspace, &pane, a, false, false, Some(5), cx);
});
assert_item_labels(&pane, ["B", "C", "D", "A*"], cx);
// 1d. Add same item to active index
let [_, b, _] = set_labeled_items(&workspace, &pane, ["A", "B*", "C"], cx);
workspace.update(cx, |workspace, cx| {
Pane::add_item(workspace, &pane, b, false, false, Some(1), cx);
});
assert_item_labels(&pane, ["A", "B*", "C"], cx);
// 1e. Add item to index after same item in last position
let [_, _, c] = set_labeled_items(&workspace, &pane, ["A", "B*", "C"], cx);
workspace.update(cx, |workspace, cx| {
Pane::add_item(workspace, &pane, c, false, false, Some(2), cx);
});
assert_item_labels(&pane, ["A", "B", "C*"], cx);
// 2. Add without a destination index
// 2a. Add with active item at the start of the item list
let [_, _, _, d] = set_labeled_items(&workspace, &pane, ["A*", "B", "C", "D"], cx);
workspace.update(cx, |workspace, cx| {
Pane::add_item(workspace, &pane, d, false, false, None, cx);
});
assert_item_labels(&pane, ["A", "D*", "B", "C"], cx);
// 2b. Add with active item at the end of the item list
let [a, _, _, _] = set_labeled_items(&workspace, &pane, ["A", "B", "C", "D*"], cx);
workspace.update(cx, |workspace, cx| {
Pane::add_item(workspace, &pane, a, false, false, None, cx);
});
assert_item_labels(&pane, ["B", "C", "D", "A*"], cx);
// 2c. Add active item to active item at end of list
let [_, _, c] = set_labeled_items(&workspace, &pane, ["A", "B", "C*"], cx);
workspace.update(cx, |workspace, cx| {
Pane::add_item(workspace, &pane, c, false, false, None, cx);
});
assert_item_labels(&pane, ["A", "B", "C*"], cx);
// 2d. Add active item to active item at start of list
let [a, _, _] = set_labeled_items(&workspace, &pane, ["A*", "B", "C"], cx);
workspace.update(cx, |workspace, cx| {
Pane::add_item(workspace, &pane, a, false, false, None, cx);
});
assert_item_labels(&pane, ["A*", "B", "C"], cx);
}
#[gpui::test]
async fn test_add_item_with_same_project_entries(cx: &mut TestAppContext) {
cx.foreground().forbid_parking();
Settings::test_async(cx);
let fs = FakeFs::new(cx.background());
let project = Project::test(fs, None, cx).await;
let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
// singleton view
workspace.update(cx, |workspace, cx| {
let item = TestItem::new()
.with_singleton(true)
.with_label("buffer 1")
.with_project_items(&[TestProjectItem::new(1, "one.txt", cx)]);
Pane::add_item(
workspace,
&pane,
Box::new(cx.add_view(|_| item)),
false,
false,
None,
cx,
);
});
assert_item_labels(&pane, ["buffer 1*"], cx);
// new singleton view with the same project entry
workspace.update(cx, |workspace, cx| {
let item = TestItem::new()
.with_singleton(true)
.with_label("buffer 1")
.with_project_items(&[TestProjectItem::new(1, "1.txt", cx)]);
Pane::add_item(
workspace,
&pane,
Box::new(cx.add_view(|_| item)),
false,
false,
None,
cx,
);
});
assert_item_labels(&pane, ["buffer 1*"], cx);
// new singleton view with different project entry
workspace.update(cx, |workspace, cx| {
let item = TestItem::new()
.with_singleton(true)
.with_label("buffer 2")
.with_project_items(&[TestProjectItem::new(2, "2.txt", cx)]);
Pane::add_item(
workspace,
&pane,
Box::new(cx.add_view(|_| item)),
false,
false,
None,
cx,
);
});
assert_item_labels(&pane, ["buffer 1", "buffer 2*"], cx);
// new multibuffer view with the same project entry
workspace.update(cx, |workspace, cx| {
let item = TestItem::new()
.with_singleton(false)
.with_label("multibuffer 1")
.with_project_items(&[TestProjectItem::new(1, "1.txt", cx)]);
Pane::add_item(
workspace,
&pane,
Box::new(cx.add_view(|_| item)),
false,
false,
None,
cx,
);
});
assert_item_labels(&pane, ["buffer 1", "buffer 2", "multibuffer 1*"], cx);
// another multibuffer view with the same project entry
workspace.update(cx, |workspace, cx| {
let item = TestItem::new()
.with_singleton(false)
.with_label("multibuffer 1b")
.with_project_items(&[TestProjectItem::new(1, "1.txt", cx)]);
Pane::add_item(
workspace,
&pane,
Box::new(cx.add_view(|_| item)),
false,
false,
None,
cx,
);
});
assert_item_labels(
&pane,
["buffer 1", "buffer 2", "multibuffer 1", "multibuffer 1b*"],
cx,
);
}
#[gpui::test]
async fn test_remove_item_ordering(deterministic: Arc<Deterministic>, cx: &mut TestAppContext) {
Settings::test_async(cx);
let fs = FakeFs::new(cx.background());
let project = Project::test(fs, None, cx).await;
let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
add_labeled_item(&workspace, &pane, "A", false, cx);
add_labeled_item(&workspace, &pane, "B", false, cx);
add_labeled_item(&workspace, &pane, "C", false, cx);
add_labeled_item(&workspace, &pane, "D", false, cx);
assert_item_labels(&pane, ["A", "B", "C", "D*"], cx);
pane.update(cx, |pane, cx| pane.activate_item(1, false, false, cx));
add_labeled_item(&workspace, &pane, "1", false, cx);
assert_item_labels(&pane, ["A", "B", "1*", "C", "D"], cx);
workspace.update(cx, |workspace, cx| {
Pane::close_active_item(workspace, &CloseActiveItem, cx);
});
deterministic.run_until_parked();
assert_item_labels(&pane, ["A", "B*", "C", "D"], cx);
pane.update(cx, |pane, cx| pane.activate_item(3, false, false, cx));
assert_item_labels(&pane, ["A", "B", "C", "D*"], cx);
workspace.update(cx, |workspace, cx| {
Pane::close_active_item(workspace, &CloseActiveItem, cx);
});
deterministic.run_until_parked();
assert_item_labels(&pane, ["A", "B*", "C"], cx);
workspace.update(cx, |workspace, cx| {
Pane::close_active_item(workspace, &CloseActiveItem, cx);
});
deterministic.run_until_parked();
assert_item_labels(&pane, ["A", "C*"], cx);
workspace.update(cx, |workspace, cx| {
Pane::close_active_item(workspace, &CloseActiveItem, cx);
});
deterministic.run_until_parked();
assert_item_labels(&pane, ["A*"], cx);
}
#[gpui::test]
async fn test_close_inactive_items(deterministic: Arc<Deterministic>, cx: &mut TestAppContext) {
Settings::test_async(cx);
let fs = FakeFs::new(cx.background());
let project = Project::test(fs, None, cx).await;
let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
set_labeled_items(&workspace, &pane, ["A", "B", "C*", "D", "E"], cx);
workspace.update(cx, |workspace, cx| {
Pane::close_inactive_items(workspace, &CloseInactiveItems, cx);
});
deterministic.run_until_parked();
assert_item_labels(&pane, ["C*"], cx);
}
#[gpui::test]
async fn test_close_clean_items(deterministic: Arc<Deterministic>, cx: &mut TestAppContext) {
Settings::test_async(cx);
let fs = FakeFs::new(cx.background());
let project = Project::test(fs, None, cx).await;
let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
add_labeled_item(&workspace, &pane, "A", true, cx);
add_labeled_item(&workspace, &pane, "B", false, cx);
add_labeled_item(&workspace, &pane, "C", true, cx);
add_labeled_item(&workspace, &pane, "D", false, cx);
add_labeled_item(&workspace, &pane, "E", false, cx);
assert_item_labels(&pane, ["A^", "B", "C^", "D", "E*"], cx);
workspace.update(cx, |workspace, cx| {
Pane::close_clean_items(workspace, &CloseCleanItems, cx);
});
deterministic.run_until_parked();
assert_item_labels(&pane, ["A^", "C*^"], cx);
}
#[gpui::test]
async fn test_close_items_to_the_left(
deterministic: Arc<Deterministic>,
cx: &mut TestAppContext,
) {
Settings::test_async(cx);
let fs = FakeFs::new(cx.background());
let project = Project::test(fs, None, cx).await;
let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
set_labeled_items(&workspace, &pane, ["A", "B", "C*", "D", "E"], cx);
workspace.update(cx, |workspace, cx| {
Pane::close_items_to_the_left(workspace, &CloseItemsToTheLeft, cx);
});
deterministic.run_until_parked();
assert_item_labels(&pane, ["C*", "D", "E"], cx);
}
#[gpui::test]
async fn test_close_items_to_the_right(
deterministic: Arc<Deterministic>,
cx: &mut TestAppContext,
) {
Settings::test_async(cx);
let fs = FakeFs::new(cx.background());
let project = Project::test(fs, None, cx).await;
let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
set_labeled_items(&workspace, &pane, ["A", "B", "C*", "D", "E"], cx);
workspace.update(cx, |workspace, cx| {
Pane::close_items_to_the_right(workspace, &CloseItemsToTheRight, cx);
});
deterministic.run_until_parked();
assert_item_labels(&pane, ["A", "B", "C*"], cx);
}
#[gpui::test]
async fn test_close_all_items(deterministic: Arc<Deterministic>, cx: &mut TestAppContext) {
Settings::test_async(cx);
let fs = FakeFs::new(cx.background());
let project = Project::test(fs, None, cx).await;
let (_, workspace) = cx.add_window(|cx| Workspace::test_new(project.clone(), cx));
let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
add_labeled_item(&workspace, &pane, "A", false, cx);
add_labeled_item(&workspace, &pane, "B", false, cx);
add_labeled_item(&workspace, &pane, "C", false, cx);
assert_item_labels(&pane, ["A", "B", "C*"], cx);
workspace.update(cx, |workspace, cx| {
Pane::close_all_items(workspace, &CloseAllItems, cx);
});
deterministic.run_until_parked();
assert_item_labels(&pane, [], cx);
}
fn add_labeled_item(
workspace: &ViewHandle<Workspace>,
pane: &ViewHandle<Pane>,
label: &str,
is_dirty: bool,
cx: &mut TestAppContext,
) -> Box<ViewHandle<TestItem>> {
workspace.update(cx, |workspace, cx| {
let labeled_item =
Box::new(cx.add_view(|_| TestItem::new().with_label(label).with_dirty(is_dirty)));
Pane::add_item(
workspace,
pane,
labeled_item.clone(),
false,
false,
None,
cx,
);
labeled_item
})
}
fn set_labeled_items<const COUNT: usize>(
workspace: &ViewHandle<Workspace>,
pane: &ViewHandle<Pane>,
labels: [&str; COUNT],
cx: &mut TestAppContext,
) -> [Box<ViewHandle<TestItem>>; COUNT] {
pane.update(cx, |pane, _| {
pane.items.clear();
});
workspace.update(cx, |workspace, cx| {
let mut active_item_index = 0;
let mut index = 0;
let items = labels.map(|mut label| {
if label.ends_with("*") {
label = label.trim_end_matches("*");
active_item_index = index;
}
let labeled_item = Box::new(cx.add_view(|_| TestItem::new().with_label(label)));
Pane::add_item(
workspace,
pane,
labeled_item.clone(),
false,
false,
None,
cx,
);
index += 1;
labeled_item
});
pane.update(cx, |pane, cx| {
pane.activate_item(active_item_index, false, false, cx)
});
items
})
}
// Assert the item label, with the active item label suffixed with a '*'
fn assert_item_labels<const COUNT: usize>(
pane: &ViewHandle<Pane>,
expected_states: [&str; COUNT],
cx: &mut TestAppContext,
) {
pane.read_with(cx, |pane, cx| {
let actual_states = pane
.items
.iter()
.enumerate()
.map(|(ix, item)| {
let mut state = item
.as_any()
.downcast_ref::<TestItem>()
.unwrap()
.read(cx)
.label
.clone();
if ix == pane.active_item_index {
state.push('*');
}
if item.is_dirty(cx) {
state.push('^');
}
state
})
.collect::<Vec<_>>();
assert_eq!(
actual_states, expected_states,
"pane items do not match expectation"
);
})
}
}
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