Fix append mode, and make insertion always happen at head of range.

pull/376/head
Nathan Vegdahl 3 years ago
parent ffb8057a7f
commit ad814b8c2e

@ -447,6 +447,20 @@ impl Selection {
self.transform(|r| r.min_width_1(text))
}
/// Transforms the selection into all of the left-side head positions,
/// using 1-width semantics.
pub fn cursors(self, text: RopeSlice) -> Self {
self.transform(|range| {
// For 1-width cursor semantics.
let pos = if range.anchor < range.head {
prev_grapheme_boundary(text, range.head).max(range.anchor)
} else {
range.head
};
Range::new(pos, pos)
})
}
pub fn fragments<'a>(&'a self, text: RopeSlice<'a>) -> impl Iterator<Item = Cow<str>> + 'a {
self.ranges.iter().map(move |range| range.fragment(text))
}

@ -1272,19 +1272,13 @@ fn append_mode(cx: &mut Context) {
doc.restore_cursor = true;
let text = doc.text().slice(..);
// TODO: preserve selections, like in `Insert` mode. Probably we'll want
// an explicit separate `Append` mode or something similar, so that we
// don't change the selection at all, and instead just display and edit
// things differently.
let selection = doc
.selection(view.id)
.clone()
.min_width_1(text)
.transform(|range| Range::new(range.to(), range.to()));
let selection = doc.selection(view.id).clone().min_width_1(text);
// Make sure there's room at the end of the document if the last
// selection butts up against it.
let end = text.len_chars();
if selection.iter().any(|range| range.head == end) {
let last_range = selection.iter().last().unwrap();
if !last_range.is_empty() && last_range.head == end {
let transaction = Transaction::change(
doc.text(),
std::array::IntoIter::new([(end, end, Some(doc.line_ending.as_str().into()))]),
@ -1292,7 +1286,15 @@ fn append_mode(cx: &mut Context) {
doc.apply(&transaction, view.id);
}
doc.set_selection(view.id, selection);
doc.set_selection(
view.id,
selection.clone().transform(|range| {
Range::new(
range.from(),
graphemes::next_grapheme_boundary(doc.text().slice(..), range.to()),
)
}),
);
}
mod cmd {
@ -2829,11 +2831,11 @@ pub mod insert {
let (view, doc) = current!(cx.editor);
let text = doc.text();
let selection = doc.selection(view.id);
let selection = doc.selection(view.id).clone().cursors(text.slice(..));
// run through insert hooks, stopping on the first one that returns Some(t)
for hook in HOOKS {
if let Some(transaction) = hook(text, selection, c) {
if let Some(transaction) = hook(text, &selection, c) {
doc.apply(&transaction, view.id);
break;
}
@ -2853,7 +2855,11 @@ pub mod insert {
// indent by one to reach 4 spaces).
let indent = Tendril::from(doc.indent_unit());
let transaction = Transaction::insert(doc.text(), doc.selection(view.id), indent);
let transaction = Transaction::insert(
doc.text(),
&doc.selection(view.id).clone().cursors(doc.text().slice(..)),
indent,
);
doc.apply(&transaction, view.id);
}
@ -2862,13 +2868,13 @@ pub mod insert {
let text = doc.text().slice(..);
let contents = doc.text();
let selection = doc.selection(view.id);
let selection = doc.selection(view.id).clone().cursors(text);
let mut ranges = SmallVec::with_capacity(selection.len());
// TODO: this is annoying, but we need to do it to properly calculate pos after edits
let mut offs = 0;
let mut transaction = Transaction::change_by_selection(contents, selection, |range| {
let mut transaction = Transaction::change_by_selection(contents, &selection, |range| {
let pos = range.head;
let prev = if pos == 0 {

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