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Introduce ReorderBehavior to pane, and address drag and drop offset error

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This commit is contained in:
K Simmons 2022-08-23 15:41:59 -07:00
parent 9d20b66f2e
commit de3acbd75b
4 changed files with 141 additions and 93 deletions
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208
crates/workspace/src/pane.rs
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@ -86,10 +86,10 @@ const MAX_NAVIGATION_HISTORY_LEN: usize = 1024;
pub fn init(cx: &mut MutableAppContext) {
cx.add_action(|pane: &mut Pane, action: &ActivateItem, cx| {
pane.activate_item(action.0, true, true, false, cx);
pane.activate_item(action.0, true, true, ReorderBehavior::None, cx);
});
cx.add_action(|pane: &mut Pane, _: &ActivateLastItem, cx| {
pane.activate_item(pane.items.len() - 1, true, true, false, cx);
pane.activate_item(pane.items.len() - 1, true, true, ReorderBehavior::None, cx);
});
cx.add_action(|pane: &mut Pane, _: &ActivatePrevItem, cx| {
pane.activate_prev_item(cx);
@ -107,47 +107,32 @@ pub fn init(cx: &mut MutableAppContext) {
Ok(())
}))
});
cx.add_action(|workspace: &mut Workspace, action: &MoveItem, cx| {
// Get item handle to move
let from = if let Some(from) = action.from.upgrade(cx) {
from
} else {
return;
};
cx.add_action(
|workspace,
MoveItem {
from,
to,
item_id,
destination_index,
},
cx| {
// Get item handle to move
let from = if let Some(from) = from.upgrade(cx) {
from
} else {
return;
};
let (item_ix, item_handle) = from
.read(cx)
.items()
.enumerate()
.find(|(_, item_handle)| item_handle.id() == action.item_id)
.expect("Tried to move item handle which was not in from pane");
// Add item to new pane at given index
let to = if let Some(to) = to.upgrade(cx) {
to
} else {
return;
};
// Add item to new pane at given index
let to = if let Some(to) = action.to.upgrade(cx) {
to
} else {
return;
};
// This automatically removes duplicate items in the pane
Pane::add_item_at(
workspace,
to,
item_handle.clone(),
true,
true,
Some(action.destination_index),
cx,
);
if action.from != action.to {
// Close item from previous pane
from.update(cx, |from, cx| {
from.remove_item(item_ix, cx);
dbg!(from.items().collect::<Vec<_>>());
});
}
});
Pane::move_item(workspace, from, to, *item_id, *destination_index, cx)
},
);
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));
@ -236,6 +221,17 @@ pub struct NavigationEntry {
pub data: Option<Box<dyn Any>>,
}
struct DraggedItem {
item: Box<dyn ItemHandle>,
pane: WeakViewHandle<Pane>,
}
pub enum ReorderBehavior {
None,
MoveAfterActive,
MoveToIndex(usize),
}
impl Pane {
pub fn new(cx: &mut ViewContext<Self>) -> Self {
let handle = cx.weak_handle();
@ -350,7 +346,7 @@ impl Pane {
{
let prev_active_item_index = pane.active_item_index;
pane.nav_history.borrow_mut().set_mode(mode);
pane.activate_item(index, true, true, false, cx);
pane.activate_item(index, true, true, ReorderBehavior::None, cx);
pane.nav_history
.borrow_mut()
.set_mode(NavigationMode::Normal);
@ -442,7 +438,7 @@ impl Pane {
&& item.project_entry_ids(cx).as_slice() == [project_entry_id]
{
let item = item.boxed_clone();
pane.activate_item(ix, true, focus_item, true, cx);
pane.activate_item(ix, true, focus_item, ReorderBehavior::MoveAfterActive, cx);
return Some(item);
}
}
@ -468,10 +464,18 @@ impl Pane {
) {
// Prevent adding the same item to the pane more than once.
// If there is already an active item, reorder the desired item to be after it
// and activate it.
if let Some(item_ix) = pane.read(cx).items.iter().position(|i| i.id() == item.id()) {
// (or at the desired destination_index) and activate it.
if let Some(item_ix) = pane.read(cx).items.iter().position(|i| {
i.id() == item.id() || i.project_entry_ids(cx) == item.project_entry_ids(cx)
}) {
pane.update(cx, |pane, cx| {
pane.activate_item(item_ix, activate_pane, focus_item, true, cx)
pane.activate_item(
item_ix,
activate_pane,
focus_item,
ReorderBehavior::MoveAfterActive,
cx,
)
});
return;
}
@ -496,7 +500,13 @@ impl Pane {
cx.reparent(&item);
pane.items.insert(item_ix, item);
pane.activate_item(item_ix, activate_pane, focus_item, false, cx);
pane.activate_item(
item_ix,
activate_pane,
focus_item,
ReorderBehavior::None,
cx,
);
cx.notify();
});
}
@ -549,20 +559,24 @@ impl Pane {
mut index: usize,
activate_pane: bool,
focus_item: bool,
move_after_current_active: bool,
reorder: ReorderBehavior,
cx: &mut ViewContext<Self>,
) {
use NavigationMode::{GoingBack, GoingForward};
if index < self.items.len() {
if move_after_current_active {
if let Some(destination_index) = match reorder {
ReorderBehavior::MoveAfterActive => Some(self.active_item_index + 1),
ReorderBehavior::MoveToIndex(destination_index) => Some(destination_index),
ReorderBehavior::None => None,
} {
// If there is already an active item, reorder the desired item to be after it
// and activate it.
if self.active_item_index != index && self.active_item_index < self.items.len() {
if destination_index - 1 != index && destination_index <= self.items.len() {
let pane_to_activate = self.items.remove(index);
if self.active_item_index < index {
index = self.active_item_index + 1;
} else if self.active_item_index < self.items.len() + 1 {
index = self.active_item_index;
if destination_index - 1 < index {
index = destination_index;
} else if destination_index <= self.items.len() + 1 {
index = destination_index - 1;
// Index is less than active_item_index. Reordering will decrement the
// active_item_index, so adjust it accordingly
self.active_item_index = index - 1;
@ -601,7 +615,7 @@ impl Pane {
} else if !self.items.is_empty() {
index = self.items.len() - 1;
}
self.activate_item(index, true, true, false, cx);
self.activate_item(index, true, true, ReorderBehavior::None, cx);
}
pub fn activate_next_item(&mut self, cx: &mut ViewContext<Self>) {
@ -611,7 +625,7 @@ impl Pane {
} else {
index = 0;
}
self.activate_item(index, true, true, false, cx);
self.activate_item(index, true, true, ReorderBehavior::None, cx);
}
pub fn close_active_item(
@ -818,7 +832,7 @@ impl Pane {
if has_conflict && can_save {
let mut answer = pane.update(cx, |pane, cx| {
pane.activate_item(item_ix, true, true, false, cx);
pane.activate_item(item_ix, true, true, ReorderBehavior::None, cx);
cx.prompt(
PromptLevel::Warning,
CONFLICT_MESSAGE,
@ -839,7 +853,7 @@ impl Pane {
});
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, false, cx);
pane.activate_item(item_ix, true, true, ReorderBehavior::None, cx);
cx.prompt(
PromptLevel::Warning,
DIRTY_MESSAGE,
@ -901,6 +915,42 @@ impl Pane {
}
}
fn move_item(
workspace: &mut Workspace,
from: ViewHandle<Pane>,
to: ViewHandle<Pane>,
item_to_move: usize,
destination_index: usize,
cx: &mut ViewContext<Workspace>,
) {
let (item_ix, item_handle) = from
.read(cx)
.items()
.enumerate()
.find(|(_, item_handle)| item_handle.id() == item_to_move)
.expect("Tried to move item handle which was not in from pane");
// This automatically removes duplicate items in the pane
Pane::add_item_at(
workspace,
to.clone(),
item_handle.clone(),
true,
true,
Some(destination_index),
cx,
);
if from != to {
// Close item from previous pane
from.update(cx, |from, cx| {
from.remove_item(item_ix, cx);
});
}
cx.focus(to);
}
pub fn split(&mut self, direction: SplitDirection, cx: &mut ViewContext<Self>) {
cx.emit(Event::Split(direction));
}
@ -950,11 +1000,7 @@ impl Pane {
fn render_tab_bar(&mut self, cx: &mut RenderContext<Self>) -> impl Element {
let theme = cx.global::<Settings>().theme.clone();
struct DraggedItem {
item: Box<dyn ItemHandle>,
pane: WeakViewHandle<Pane>,
}
let filler_index = self.items.len();
enum Tabs {}
enum Tab {}
@ -1018,20 +1064,7 @@ impl Pane {
})
.on_up(MouseButton::Left, {
let pane = pane.clone();
move |_, cx: &mut EventContext| {
if let Some((_, dragged_item)) = cx
.global::<DragAndDrop<Workspace>>()
.currently_dragged::<DraggedItem>()
{
cx.dispatch_action(MoveItem {
item_id: dragged_item.item.id(),
from: dragged_item.pane.clone(),
to: pane.clone(),
destination_index: ix,
})
}
cx.propogate_event();
}
move |_, cx: &mut EventContext| Pane::handle_dropped_item(&pane, ix, cx)
})
.as_draggable(
DraggedItem {
@ -1063,12 +1096,15 @@ impl Pane {
.contained()
.with_style(filler_style.container)
.with_border(filler_style.container.border)
.flex(0., true)
.flex(1., true)
.named("filler"),
);
row.boxed()
})
.on_up(MouseButton::Left, move |_, cx| {
Pane::handle_dropped_item(&pane, filler_index, cx)
})
}
fn tab_details(&self, cx: &AppContext) -> Vec<usize> {
@ -1209,6 +1245,22 @@ impl Pane {
.with_height(tab_style.height)
.boxed()
}
fn handle_dropped_item(pane: &WeakViewHandle<Pane>, index: usize, cx: &mut EventContext) {
if let Some((_, dragged_item)) = cx
.global::<DragAndDrop<Workspace>>()
.currently_dragged::<DraggedItem>()
{
cx.dispatch_action(MoveItem {
item_id: dragged_item.item.id(),
from: dragged_item.pane.clone(),
to: pane.clone(),
destination_index: index,
})
} else {
cx.propogate_event();
}
}
}
impl Entity for Pane {