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Generate operation when updating selection set after undo/redo

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This commit is contained in:
Antonio Scandurra 2021-04-12 17:47:19 +02:00
parent 59a9f0102f
commit 3a33fab091
2 changed files with 36 additions and 42 deletions
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55
zed/src/editor/buffer/mod.rs
View File

@ -22,7 +22,7 @@ use gpui::{AppContext, Entity, ModelContext};
use lazy_static::lazy_static;
use rand::prelude::*;
use std::{
cmp::{self, Ordering},
cmp,
hash::BuildHasher,
iter::{self, Iterator},
ops::{AddAssign, Range},
@ -767,10 +767,10 @@ impl Buffer {
pub fn add_selection_set(
&mut self,
selections: Vec<Selection>,
selections: impl Into<Arc<[Selection]>>,
ctx: Option<&mut ModelContext<Self>>,
) -> (SelectionSetId, Operation) {
let selections = Arc::from(selections);
let selections = selections.into();
let lamport_timestamp = self.lamport_clock.tick();
self.selections
.insert(lamport_timestamp, Arc::clone(&selections));
@ -793,12 +793,11 @@ impl Buffer {
pub fn update_selection_set(
&mut self,
set_id: SelectionSetId,
mut selections: Vec<Selection>,
selections: impl Into<Arc<[Selection]>>,
ctx: Option<&mut ModelContext<Self>>,
) -> Result<Operation> {
self.merge_selections(&mut selections);
let selections = Arc::from(selections);
self.selections.insert(set_id, Arc::clone(&selections));
let selections = selections.into();
self.selections.insert(set_id, selections.clone());
let lamport_timestamp = self.lamport_clock.tick();
self.selections_last_update += 1;
@ -843,28 +842,6 @@ impl Buffer {
.ok_or_else(|| anyhow!("invalid selection set id {:?}", set_id))
}
fn merge_selections(&mut self, selections: &mut Vec<Selection>) {
let mut i = 1;
while i < selections.len() {
if selections[i - 1]
.end
.cmp(&selections[i].start, self)
.unwrap()
>= Ordering::Equal
{
let removed = selections.remove(i);
if removed.start.cmp(&selections[i - 1].start, self).unwrap() < Ordering::Equal {
selections[i - 1].start = removed.start;
}
if removed.end.cmp(&selections[i - 1].end, self).unwrap() > Ordering::Equal {
selections[i - 1].end = removed.end;
}
} else {
i += 1;
}
}
}
pub fn apply_ops<I: IntoIterator<Item = Operation>>(
&mut self,
ops: I,
@ -1063,21 +1040,19 @@ impl Buffer {
Ok(())
}
pub fn undo(&mut self, ctx: Option<&mut ModelContext<Self>>) -> Vec<Operation> {
pub fn undo(&mut self, mut ctx: Option<&mut ModelContext<Self>>) -> Vec<Operation> {
let was_dirty = self.is_dirty();
let old_version = self.version.clone();
let mut ops = Vec::new();
if let Some(transaction) = self.history.pop_undo() {
let transaction_selections = transaction.selections_before.clone();
let selections = transaction.selections_before.clone();
for edit_id in transaction.edits.clone() {
ops.push(self.undo_or_redo(edit_id).unwrap());
}
if let Some((set_id, transaction_selections)) = transaction_selections {
if let Some(selections) = self.selections.get_mut(&set_id) {
*selections = transaction_selections;
}
if let Some((set_id, selections)) = selections {
let _ = self.update_selection_set(set_id, selections, ctx.as_deref_mut());
}
}
@ -1092,21 +1067,19 @@ impl Buffer {
ops
}
pub fn redo(&mut self, ctx: Option<&mut ModelContext<Self>>) -> Vec<Operation> {
pub fn redo(&mut self, mut ctx: Option<&mut ModelContext<Self>>) -> Vec<Operation> {
let was_dirty = self.is_dirty();
let old_version = self.version.clone();
let mut ops = Vec::new();
if let Some(transaction) = self.history.pop_redo() {
let transaction_selections = transaction.selections_after.clone();
let selections = transaction.selections_after.clone();
for edit_id in transaction.edits.clone() {
ops.push(self.undo_or_redo(edit_id).unwrap());
}
if let Some((set_id, transaction_selections)) = transaction_selections {
if let Some(selections) = self.selections.get_mut(&set_id) {
*selections = transaction_selections;
}
if let Some((set_id, selections)) = selections {
let _ = self.update_selection_set(set_id, selections, ctx.as_deref_mut());
}
}

23
zed/src/editor/buffer_view.rs
View File

@ -721,7 +721,28 @@ impl BufferView {
.unwrap()
}
fn update_selections(&self, selections: Vec<Selection>, ctx: &mut ViewContext<Self>) {
fn update_selections(&self, mut selections: Vec<Selection>, ctx: &mut ViewContext<Self>) {
let buffer = self.buffer.as_ref(ctx);
let mut i = 1;
while i < selections.len() {
if selections[i - 1]
.end
.cmp(&selections[i].start, buffer)
.unwrap()
>= Ordering::Equal
{
let removed = selections.remove(i);
if removed.start.cmp(&selections[i - 1].start, buffer).unwrap() < Ordering::Equal {
selections[i - 1].start = removed.start;
}
if removed.end.cmp(&selections[i - 1].end, buffer).unwrap() > Ordering::Equal {
selections[i - 1].end = removed.end;
}
} else {
i += 1;
}
}
let op = self.buffer.update(ctx, |buffer, ctx| {
buffer
.update_selection_set(self.selection_set_id, selections, Some(ctx))