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terminal: cursorChangePin needs to migrate hyperlink state

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Fixes #2007
This commit is contained in:
Mitchell Hashimoto
2024-07-28 14:14:07 -07:00
parent 4bbb5d9c86
commit 6d2e97a2f1
1 changed files with 49 additions and 21 deletions
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70
src/terminal/Screen.zig
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@ -797,35 +797,63 @@ fn cursorChangePin(self: *Screen, new: Pin) void {
new.markDirty();
}
// If we have a style set, then we need to migrate it over to the
// new page. This is expensive so we do everything we can with cheap
// ops to avoid it.
if (self.cursor.style_id == style.default_id or
self.cursor.page_pin.page == new.page)
{
// If our pin is on the same page, then we can just update the pin.
// We don't need to migrate any state.
if (self.cursor.page_pin.page == new.page) {
self.cursor.page_pin.* = new;
return;
}
// Store our old full style so we can reapply it in the new page.
const old_style = self.cursor.style;
// If we have a old style then we need to release it from the old page.
const old_style_: ?style.Style = if (self.cursor.style_id == style.default_id)
null
else
self.cursor.style;
if (old_style_ != null) {
self.cursor.style = .{};
self.manualStyleUpdate() catch unreachable; // Removing a style should never fail
}
// Clear our old style in the current pin
self.cursor.style = .{};
self.manualStyleUpdate() catch unreachable; // Removing a style should never fail
// If we have a hyperlink then we need to release it from the old page.
if (self.cursor.hyperlink != null) {
const old_page = &self.cursor.page_pin.page.data;
old_page.hyperlink_set.release(old_page.memory, self.cursor.hyperlink_id);
}
// Update our pin to the new page
self.cursor.page_pin.* = new;
self.cursor.style = old_style;
self.manualStyleUpdate() catch |err| {
// This failure should not happen because manualStyleUpdate
// handles page splitting, overflow, and more. This should only
// happen if we're out of RAM. In this case, we'll just degrade
// gracefully back to the default style.
log.err("failed to update style on cursor change err={}", .{err});
self.cursor.style = .{};
self.cursor.style_id = 0;
};
// On the new page, we need to migrate our style
if (old_style_) |old_style| {
self.cursor.style = old_style;
self.manualStyleUpdate() catch |err| {
// This failure should not happen because manualStyleUpdate
// handles page splitting, overflow, and more. This should only
// happen if we're out of RAM. In this case, we'll just degrade
// gracefully back to the default style.
log.err("failed to update style on cursor change err={}", .{err});
self.cursor.style = .{};
self.cursor.style_id = 0;
};
}
// On the new page, we need to migrate our hyperlink
if (self.cursor.hyperlink) |link| {
// So we don't attempt to free any memory in the replaced page.
self.cursor.hyperlink_id = 0;
self.cursor.hyperlink = null;
// Re-add
self.startHyperlink(link.uri, link.id) catch |err| {
// This shouldn't happen because startHyperlink should handle
// resizing. This only happens if we're truly out of RAM. Degrade
// to forgetting the hyperlink.
log.err("failed to update hyperlink on cursor change err={}", .{err});
};
// Remove our old link
link.destroy(self.alloc);
}
}
/// Mark the cursor position as dirty.