jesseduffield.lazygit/pkg/gui/controllers/helpers
Stefan Haller 3b6568cf9f Preserve the diff scroll and selection when the context size changes
Increasing or decreasing the diff context size (the `{`/`}` keybindings)
re-renders the diff with a different `git diff -U<n>` command. Because the
command key changes, the render reset the main view to the top — losing the
spot the user was reading, which is exactly the spot the context change is
about.

Preserve it instead, reusing the identity-based restore built for the escape
path. This is its sibling consumer: capture the lines around the anchor (the
selection, or the top visible line when there's none) as restore candidates,
and after the re-render land on the nearest one that survived, put back at the
same screen row. Prefer the anchor line itself, falling back outward only when
it didn't survive: a context line vanishes when the context size shrinks,
whereas additions and deletions always survive, so expansion stops at the
first change line in each direction and the candidate list always contains a
survivor. Landing on the nearest survivor keeps scrolling to a minimum, and a
context line that is still in the patch stays put (or stays selected).

This generalizes the shared restore helper to take a prioritized candidate
list (the escape path passes a single candidate). It covers the focused main
view and every side panel's diff, since they all render into the same "main"
view through the same path. A showing selection is re-established on the landed
line; otherwise the view stays in scroll mode.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-08-08 12:58:59 +02:00
..
amend_helper.go Allow passing refresh scope to WithGpgHandling 2025-03-24 08:41:58 +01:00
app_status_helper.go Decouple hiding the working tree state from blocking input 2026-08-05 17:29:20 +02:00
bisect_helper.go Remove the RefreshMode field 2026-07-17 12:32:32 +02:00
branches_helper.go Don't auto-forward branches when the repo was switched during the fetch 2026-07-20 17:07:39 +02:00
cherry_pick_helper.go Decouple hiding the working tree state from blocking input 2026-08-05 17:29:20 +02:00
commit_files_helper.go WIP FocusedMainViewSnapshot approach 2026-08-08 12:58:59 +02:00
commits_helper.go Rename Key to Keys in Binding, KeybindingsOpts, and MenuItem 2026-05-25 15:18:18 +02:00
commits_helper_test.go Remove hard line breaks when rewording commits 2024-03-09 10:00:44 +01:00
confirmation_helper.go Remove the now-dead PopupMutex 2026-07-17 12:35:54 +02:00
credentials_helper.go Remove the RefreshMode field 2026-07-17 12:32:32 +02:00
diff_helper.go Remove the RefreshMode field 2026-07-17 12:32:32 +02:00
diff_line_parser.go Use pager-emitted OSC diff metadata as the highest-fidelity line-info backend 2026-08-08 12:58:59 +02:00
diff_line_parser_test.go Use pager-emitted OSC diff metadata as the highest-fidelity line-info backend 2026-08-08 12:58:59 +02:00
drag_autoscroller.go Add DragAutoScroller helper 2026-07-31 08:26:35 +02:00
drag_autoscroller_test.go Add DragAutoScroller helper 2026-07-31 08:26:35 +02:00
files_helper.go Cleanup: remove unused interfaces for helpers 2025-04-08 16:08:25 +02:00
fixup_helper.go Suppress command logs for git calls related to the ctrl+f command 2026-07-19 19:22:48 +02:00
fixup_helper_test.go Ignore fixup commits for a found base commit when doing ctrl-f 2026-01-24 16:04:35 +01:00
gpg_helper.go Remove the RefreshMode field 2026-07-17 12:32:32 +02:00
helpers.go Extract some functions from CommitFilesController to a new CommitFilesHelper 2026-08-08 12:58:59 +02:00
host_helper.go Cleanup: remove unused interfaces for helpers 2025-04-08 16:08:25 +02:00
inline_status_helper.go Update comments that still describe the removed blocking refresh mode 2026-07-21 22:23:58 +02:00
menu_key.go Use a slice of keys for each binding 2026-05-25 15:18:18 +02:00
merge_and_rebase_helper.go Check for exec todos on the UI thread 2026-07-17 12:35:54 +02:00
merge_conflicts_helper.go Make the conflict marker size a parameter of our marker matching 2026-08-08 12:43:42 +02:00
mode_helper.go Scroll the selection into view after a filtering mode change 2026-08-05 17:29:20 +02:00
patch_building_helper.go Return to the focused main view when escaping the staged half too 2026-08-08 12:58:59 +02:00
record_directory_helper.go split context common from helper common 2023-04-30 13:19:53 +10:00
refresh_helper.go Make the conflict marker size a parameter of our marker matching 2026-08-08 12:43:42 +02:00
refresh_helper_test.go Restore commit selection even when the commit's TODO status changed 2026-06-23 09:20:05 +02:00
refs_helper.go Show the inline status again when checking out a newly created remote branch 2026-07-21 22:23:57 +02:00
repos_helper.go Remember how to get back to a repo we entered a submodule from 2026-08-08 11:15:01 +02:00
search_helper.go Cleanup: remove unnecessary function Label() 2026-04-30 22:14:26 +02:00
signal_handling.go Implement suspending the app using ctrl-z 2025-08-14 20:41:46 +02:00
signal_handling_windows.go Implement suspending the app using ctrl-z 2025-08-14 20:41:46 +02:00
snake_helper.go Bump gocui and adapt lazygit code 2024-12-01 10:40:08 +01:00
staging_helper.go Preserve the diff scroll and selection when the context size changes 2026-08-08 12:58:59 +02:00
sub_commits_helper.go Remove refresh mutexes made redundant by bouncing 2026-07-07 18:09:33 +02:00
suggestions_helper.go Hold the file-path suggestions trie outside the model 2026-07-17 12:35:54 +02:00
suspend_resume_helper.go Implement suspending the app using ctrl-z 2025-08-14 20:41:46 +02:00
tags_helper.go Convert keybinding fields to Keybinding 2026-05-25 15:32:47 +02:00
update_helper.go Copy gocui files into lazygit repo under pkg/gocui 2026-04-30 14:29:08 +02:00
upstream_helper.go Cleanup: remove unused interfaces for helpers 2025-04-08 16:08:25 +02:00
upstream_helper_test.go Standardise on using lo for slice functions 2023-07-30 18:51:23 +10:00
view_helper.go standardise helper args 2023-04-30 13:19:53 +10:00
window_arrangement_helper.go Add gui.shrinkSidePanelsToContent option 2026-07-03 19:25:01 +02:00
window_arrangement_helper_test.go Add gui.shrinkSidePanelsToContent option 2026-07-03 19:25:01 +02:00
window_helper.go Drive the side panel layout from gui.sidePanels 2026-06-23 14:15:18 +02:00
working_tree_helper.go Remove the RefreshMode field 2026-07-17 12:32:32 +02:00
worktree_helper.go Remove the RefreshMode field 2026-07-17 12:32:32 +02:00
worktree_helper_test.go Add helper to compute candidate worktree parent directories 2026-07-03 18:53:05 +02:00