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Ensure active_item_index doesn't go off the end when closing items

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This fixes a bug introduced in #538, where closing the current tab would hide
all the other tabs, if the current tab was the last one.

Also, this commit manually sets the active item index instead of calling
`Pane::activate_item`: even though this introduces a little bit of duplication,
it prevents us from mistakenly calling `deactivate` on the wrong item. This would
happen because `activate_item` looks at `self.active_item_index` to determine
which item to deactivate before setting the new one. However, that index is
potentially invalid because `::close_items` manipulates the `item_views` vector,
so `activate_item` could end up calling `deactivate` on an item view that was
not active in the first place.
This commit is contained in:
Antonio Scandurra 2022-03-05 10:52:55 +01:00
parent c7ddb66795
commit 711de5edcb
1 changed files with 4 additions and 2 deletions
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6
crates/workspace/src/pane.rs
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@ -406,11 +406,13 @@ impl Pane {
});
if self.item_views.is_empty() {
self.update_active_toolbar(cx);
cx.emit(Event::Remove);
} else {
self.activate_item(new_active_item_index, cx);
self.active_item_index = cmp::min(new_active_item_index, self.item_views.len() - 1);
self.focus_active_item(cx);
self.activate(cx);
}
self.update_active_toolbar(cx);
cx.notify();
}