Fix annoying UI stalls after refresh (e.g. background fetch) when the reflog is very long #5135
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Move SetContentLineCount into OverwriteLinesAndClearEverythingElse. Calling it separately beforehand is not concurrency safe; we need both to happen when the view's writeMutex is locked.
This fixes a bug in ListContextTrait.FocusLine whereby the view would go blank when scrolling by page (using ',' or '.') in views that have renderOnlyVisibleLines set to true but refreshViewportOnChange set to false. Currently we don't have any such views; the only ones who use renderOnlyVisibleLines are commits and subcommits, and they also use refreshViewportOnChange. However, we are going to add one in the next commit, and eventually it might be a good idea to convert all our list views to that by default, and get rid of the renderOnlyVisibleLines flag.
Since the reflog can get very long, this saves some memory but especially some UI thread lag. In one of my repos I had over 11'000 reflog entries (I guess I should prune them more regularly...), and rendering them took ~600ms; since this happens on the UI thread, there was an annoying stall for half a second after every background fetch, for example.
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This MR contains the following updates: | Package | Update | Change | |---|---|---| | [jesseduffield/lazygit](https://github.com/jesseduffield/lazygit) | minor | `v0.57.0` → `v0.58.0` | MR created with the help of [el-capitano/tools/renovate-bot](https://gitlab.com/el-capitano/tools/renovate-bot). **Proposed changes to behavior should be submitted there as MRs.** --- ### Release Notes <details> <summary>jesseduffield/lazygit (jesseduffield/lazygit)</summary> ### [`v0.58.0`](https://github.com/jesseduffield/lazygit/releases/tag/v0.58.0) [Compare Source](jesseduffield/lazygit@v0.57.0...v0.58.0) <!-- Release notes generated using configuration in .github/release.yml at v0.58.0 --> #### What's Changed ##### Enhancements 🔥 - Add keys for command log menu items by [@​PeterCardenas](https://github.com/PeterCardenas) in [#​5096](jesseduffield/lazygit#5096) - Add Codeberg as a supported git hosting service by [@​yaadata](https://github.com/yaadata) in [#​5130](jesseduffield/lazygit#5130) - Change keybinding of "keep" item in Merge Conflict menu back to 'k' by [@​stefanhaller](https://github.com/stefanhaller) in [#​5132](jesseduffield/lazygit#5132) - Support custom keybindings in custom command menu prompts by [@​HerrNaN](https://github.com/HerrNaN) in [#​5129](jesseduffield/lazygit#5129) - Show an error when checking out a file would overwrite local modifications by [@​stefanhaller](https://github.com/stefanhaller) in [#​5154](jesseduffield/lazygit#5154) ##### Fixes 🔧 - Remove confirmation for opening the merge tool by [@​stefanhaller](https://github.com/stefanhaller) in [#​5094](jesseduffield/lazygit#5094) - Allow using 'j', 'k', 'H', or 'L' as keybindings in custom command menus by [@​stefanhaller](https://github.com/stefanhaller) in [#​5131](jesseduffield/lazygit#5131) - Prevent many hyperlinks from launching while mouse moving by [@​stefanhaller](https://github.com/stefanhaller) in [#​5133](jesseduffield/lazygit#5133) - Fix the main view display after reverting a commit by [@​stefanhaller](https://github.com/stefanhaller) in [#​5138](jesseduffield/lazygit#5138) - Avoid scrolling the selection into view on refresh by [@​stefanhaller](https://github.com/stefanhaller) in [#​5134](jesseduffield/lazygit#5134) - Fix rendering of certain emojis by [@​stefanhaller](https://github.com/stefanhaller) in [#​5116](jesseduffield/lazygit#5116) ##### Docs 📖 - Fix small issues with the Breaking Changes texts by [@​stefanhaller](https://github.com/stefanhaller) in [#​5114](jesseduffield/lazygit#5114) - Add a note about delta's `--navigate` option not working in lazygit by [@​stefanhaller](https://github.com/stefanhaller) in [#​5155](jesseduffield/lazygit#5155) - Update docs and schema for release by [@​stefanhaller](https://github.com/stefanhaller) in [#​5168](jesseduffield/lazygit#5168) ##### I18n 🌎 - Update translations from Crowdin by [@​stefanhaller](https://github.com/stefanhaller) in [#​5167](jesseduffield/lazygit#5167) ##### Performance Improvements 📊 - Fix annoying UI stalls after refresh (e.g. background fetch) when the reflog is very long by [@​stefanhaller](https://github.com/stefanhaller) in [#​5135](jesseduffield/lazygit#5135) #### New Contributors - [@​yaadata](https://github.com/yaadata) made their first contribution in [#​5130](jesseduffield/lazygit#5130) - [@​HerrNaN](https://github.com/HerrNaN) made their first contribution in [#​5129](jesseduffield/lazygit#5129) **Full Changelog**: <jesseduffield/lazygit@v0.57.0...v0.58.0> </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever MR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this MR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this MR, check this box --- This MR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0Mi42OS4yIiwidXBkYXRlZEluVmVyIjoiNDIuNjkuMiIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOlsiUmVub3ZhdGUgQm90IiwiYXV0b21hdGlvbjpib3QtYXV0aG9yZWQiLCJkZXBlbmRlbmN5LXR5cGU6Om1pbm9yIl19-->
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Draw only the visible lines of the reflogs panel, like we do for commits.
Since the reflog can get very long, this saves some memory but especially some UI thread lag. In one of my repos I had over 11'000 reflog entries (I guess I should prune them more regularly...), and rendering them took ~600ms; since this happens on the UI thread, there was an annoying stall for half a second after every background fetch, for example (even if the reflog panel is not visible).