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outline.nvim/README.md
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# Fork status
[Skip to plugin readme](#symbols-outlinenvim)
This is a fork of the original symbols-outline.nvim which fixes a lot of bugs
from the original repo.
It also adds many more features listed [below](#features).
It does not attempt to be an up-to-date successor of the original repo, nor does
it attempt to ensure everyone's use-cases are satisfied by providing an overall
better experience. It is merely a fork which I maintain for my personal
use-cases which incorporates some selected PRs.
## Maintenance status
This fork is NOT guaranteed to be completely bug-free, nor as stable as the
original (aside from the already broken things in the original repo). However,
since I use this plugin myself, it is guaranteed that selected issues that I
encounter myself would be fixed (to the best of my
ability).
I do not merge PRs from the original repo that I don't personally need.
- **DO use this fork if**:
- You want to use the bugfixes included in this fork, including `auto_preview`,
and others listed in [fixes](#fixes)
- You want to use [features](#features) available in this fork, which are not
included upstream
- You are OK with some things not being looked after well such as CoC support
(things I don't personally use)
- **Do NOT use this fork if**:
- You do not need the bugfixes in this fork
- You want a stable plugin (aside from the existing bugs in original repo)
- You don't need the extra features in this fork
## Fixes
- Symbol preview empty (simrat39/symbols-outline.nvim#176)
- `SymbolsOutlineClose` crashing when already closed: simrat39/symbols-outline.nvim#163
- Symbols not showing by supporting Nerd fonts v3.0: simrat39/symbols-outline.nvim#225
- Newlines in symbols crash: simrat39/symbols-outline.nvim#204 (simrat39/symbols-outline.nvim#184)
- `code_actions`: simrat39/symbols-outline.nvim#168 (simrat39/symbols-outline.nvim#123)
- Fold all operation too slow: simrat39/symbols-outline.nvim#223 (simrat39/symbols-outline.nvim#224)
- "Invalid buffer id" error simrat39/symbols-outline.nvim#177
- Open handler triggering multiple times ends up in messy state with errors
simrat39/symbols-outline.nvim#235
## 🛑 Breaking changes
This section may be relevant to you if your existing config uses the mentioned
features:
- **Config**: `keymaps.focus_location` RENAMED to `keymaps.peek_location` to
avoid confusion with focus window commands.
- **Config**: Marker icons used for guides can now be customized. `show_guides`
REMOVED in favor of `guides.enabled`.
- **Behaviour**: Removed hover floating window from `toggle_preview`.
- Instead, you can set `open_hover_on_preview=true` (true by default) so that
the `hover_symbol` action can be triggered when `toggle_preview`is
triggered.
- The preview window's size changed to half of neovim height (rather than a
third). This is planned to be configurable.
- The preview window is positioned to be vertically center-aligned (rather
than fixed to the top). This is planned to be configurable.
- **Behaviour**: When `auto_close=true` only auto close if `goto_location` is
used (where focus changed), and not for `focus_location`
(simrat39/symbols-outline.nvim#119).
- **Behaviour**: For `auto_preview=true`, previously preview is only shown after
some delay. Now preview is shown instantly every time the cursor moves.
## Features
[Skip this section](#symbols-outlinenvim)
Below is a list of features I've included in this fork which, at the time of
writing, has not been included upstream (in the original repo). I try my best to
keep this list up to date.
Features/Changes:
- Toggling folds (and added default keymaps for it)
(simrat39/symbols-outline.nvim#194).
- Control focus between outline and code window.
- New commands: SymbolsOutline`Focus,FocusOutline,FocusCode` (see
[commands](#commands))
- Fixed issues:
- simrat39/symbols-outline.nvim#143
- simrat39/symbols-outline.nvim#174
- simrat39/symbols-outline.nvim#207
- Cursorline option for the outline window.
- Added function and command to show provider and outline window status,
somewhat like `:LspInfo`.
- Move down/up by one line and peek_location immediately.
- Flash highlight when using goto/peek location.
- Auto jump config option (see config `auto_goto`)
(simrat39/symbols-outline.nvim#229, simrat39/symbols-outline.nvim#228).
## PRs
[Skip this section](#symbols-outlinenvim)
Key:
```
✅ = Either merged superseded
📮 = Planned for merge
```
- ✅ Open handler checks if view is not already open
(#235 by eyalz800)
- ✅ auto_jump config param
(#229 by stickperson)
**Renamed to `auto_goto` for consistency**
- ✅ Update nerd fonts to 3.0
(#225 by anstadnik)
- ✅ fix(folding): optimize fold/unfold all
(#223 by wjdwndud0114)
- ✅ Support markdown setext-style headers
(#222 by msr1k)
- ✅ fix(icons): replace obsolete icons
(#219 by loichyan)
**Superseded by #225**
- ✅ Support ccls symbols
(#218 by rqdmap)
- ✅ fix: replace newlines with spaces in writer
(#204 by tbung)
- ✅ Make close_outline idempotent
(#200 by showermat)
**Superseded by #163**
- Distinguish between public and private function display in Elixir
(#187 by scottming)
- ✅ Fix some options
(#180 by cljoly)
- ✅ fix: Invalid buffer id error
(#177 by snowair)
- ✅ fix(code_actions): use the builtin code_action
(#168 by zjp-CN)
- ✅ fix: plugin crashes when SymbolOutlineClose used
(#163 by beauwilliams)
- 📮 feat: Add window_bg_highlight to config
(#137 by Zane-)
- 📮 Added preview width and relative size
(#130 by Freyskeyd)
- 📮 Improve preview, hover windows configurability and looks
(#128 by toppair)
- ✅ Do not close outline when focus_location occurs
(#119 by M1Sports20)
- ✅ feat: instant_preview
(#116 by axieax)
**Superseded with an improved implementation**
- ✅ check if code_win is nill
(#110 by i3Cheese)
**Superseded before this fork was created**
(perhaps the PR was forgotten to be closed)
- Floating window (Draft)
(#101 by druskus20)
### TODO
[Skip this section](#symbols-outlinenvim)
Key:
```
- [ ] : Planned
- [/] : WIP
- : Idea
```
Items will be moved to above list when complete.
- Folds
- `[ ]` Org-like <kbd>shift+tab</kbd> behavior: Open folds level-by-level
- `[ ]` Optionally not opening all child nodes when opening parent node
- Fold siblings and siblings of parent on startup
- Navigation
- Go to parent
- Cycle siblings
- `[ ]` simrat39/symbols-outline.nvim#75: Handling of the outline window when attached
buffer is closed.
Maybe it should continue working, so that pressing enter can open a split to
the correct location, and pressing `q` can properly close the buffer.
- Preview / Hover
- `[/]` Configurable winhighlight options for preview window (like nvim-cmp)
(simrat39/symbols-outline#128)
- `[/]` Configurable width and height of preview window (simrat39/symbols-outline#130)
- `[/]` Outline window customizations (simrat39/symbols-outline#137)
### Related plugins
- nvim-navic
- nvim-navbuddy
- dropdown.nvim
- treesitter (inspect/edit)
- lspsaga
- navigator.lua
---
# symbols-outline.nvim
**A tree like view for symbols in Neovim using the Language Server Protocol.
Supports all your favourite languages.**
![demo](https://github.com/simrat39/rust-tools-demos/raw/master/symbols-demo.gif)
## Prerequisites
- `neovim 0.7+`
- Properly configured Neovim LSP client
## Installation
Use `hedyhli/symbols-outline.nvim` if you wish to use this fork.
Packer:
```lua
use 'simrat39/symbols-outline.nvim'
```
Lazy:
```lua
{
"simrat39/symbols-outline.nvim",
config = function()
-- Example mapping to toggle outline
vim.keymap.set("n", "<leader>tt", "<cmd>SymbolsOutline<CR>",
{ desc = "SymbolsOutline" })
require("symbols-outline").setup {
-- Your setup opts here (leave empty to use defaults)
}
end,
},
```
Lazy with lazy-loading:
```lua
{
"simrat39/symbols-outline.nvim",
cmd = { "SymbolsOutline", "SymbolsOutlineOpen" },
keys = {
-- Example mapping to toggle outline
{ "<leader>tt", "<cmd>SymbolsOutline<CR>", desc = "Toggle outline window" },
},
opts = {
-- Your setup opts here
},
},
```
This allows Lazy.nvim to lazy load the plugin on commands `SymbolsOutline`,
`SymbolsOutlineOpen`, and your keybindings.
## Setup
Call the setup function with your configuration options.
Note that a call to `.setup()` is *required* for this plugin to work
(simrat39/symbols-outline.nvim#213).
```lua
require("symbols-outline").setup({})
```
## Configuration
### Terminology
- **Provider**: Source of the items in the outline view. Could be LSP, CoC, etc.
- **Node**: An item in the outline view
- **Fold**: Collapse a collapsible node
- **Location**: Where in the source file a node is from
- **Preview**: Show the location of a node in code using a floating window
- **Peek**: Go to corresponding location in code without leaving outline window
- **Hover**: Cursor currently on the line of a node
- **Hover symbol**: Displaying a floating window to show symbol information
provided by provider.
- **Focus**: Which window the cursor is in
### Options
Pass a table to the setup call with your configuration options.
Default values are shown:
```lua
local opts = {
-- Where to open the split window: right/left
position = 'right',
-- Whether width is relative to existing windows
relative_width = true,
-- Percentage or integer of columns
width = 25,
-- Whether to highlight the currently hovered symbol (high cpu usage)
highlight_hovered_item = true,
-- Options for outline guides.
-- Only in this fork
guides = {
enabled = true,
markers = {
bottom = '└',
middle = '├',
vertical = '│',
horizontal = '─',
},
},
-- Automatically open preview of code on hover
auto_preview = false,
-- Automatically open hover_symbol when opening toggle_preview (see keymaps).
-- If you disable this you can still open hover_symbol using your keymap
-- below.
-- Only in this fork
open_hover_on_preview = true,
-- Border option for floating preview window.
-- Options include: single/double/rounded/solid/shadow or an array of border
-- characters.
-- See :help nvim_open_win() and search for "border" option.
border = 'single',
-- Behaviour changed in this fork:
-- Auto close the outline window if goto_location is triggered and not for
-- peek_location
auto_close = false,
-- Automatically go to location in code when navigating outline window.
-- Only in this fork
auto_goto = false,
-- Vim options for the outline window
show_numbers = false,
show_relative_numbers = false,
show_cursorline = true, -- Only in this fork
-- Show extra details with the symbols (lsp dependent)
show_symbol_details = true,
-- Highlight group for the preview background
preview_bg_highlight = 'Pmenu',
-- Depth past which nodes will be folded by default
autofold_depth = nil,
-- Automatically unfold hovered symbol
auto_unfold_hover = true,
fold_markers = { '', '' },
-- Whether to wrap long lines, or let them flow off the window
wrap = false,
-- Only in this fork:
-- Whether to focus on the outline window when it is opened.
-- Set to false to remain focus on your previous buffer when opening
-- symbols-outline.
focus_on_open = true,
-- Pseudo-transparency of the preview window
winblend = 0
-- These keymaps can be a string or a table for multiple keys
keymaps = {
show_help = '?',
close = {"<Esc>", "q"},
-- Jump to symbol under cursor.
-- It can auto close the outline window when triggered, see
-- 'auto_close' option above.
goto_location = "<Cr>",
-- Jump to symbol under cursor but keep focus on outline window.
-- Renamed in this fork!
peek_location = "o",
hover_symbol = "<C-space>",
-- Preview symbol under cursor
toggle_preview = "K",
rename_symbol = "r",
code_actions = "a",
-- These fold actions are collapsing tree nodes, not code folding
fold = "h",
fold_toggle = '<Tab>', -- Only in this fork
-- Toggle folds for all nodes.
-- If at least one node is folded, this action will fold all nodes.
-- If all nodes are folded, this action will unfold all nodes.
fold_toggle_all = '<S-Tab>', -- Only in this fork
unfold = "l",
fold_all = "W",
unfold_all = "E",
fold_reset = "R",
-- Only in this fork:
-- Move down/up by one line and peek_location immediately.
down_and_goto = '<C-j>',
up_and_goto = '<C-k>',
},
-- Lsp clients to ignore
lsp_blacklist = {},
-- Symbols to ignore.
-- Possible values: lua/symbols-outline/symbols.lua
symbol_blacklist = {},
symbols = {
-- Changed in this fork
File = { icon = "󰈔", hl = "@text.uri" },
Module = { icon = "󰆧", hl = "@namespace" },
Namespace = { icon = "󰅪", hl = "@namespace" },
Package = { icon = "󰏗", hl = "@namespace" },
Class = { icon = "𝓒", hl = "@type" },
Method = { icon = "ƒ", hl = "@method" },
Property = { icon = "", hl = "@method" },
Field = { icon = "󰆨", hl = "@field" },
Constructor = { icon = "", hl = "@constructor" },
Enum = { icon = "", hl = "@type" },
Interface = { icon = "󰜰", hl = "@type" },
Function = { icon = "", hl = "@function" },
Variable = { icon = "", hl = "@constant" },
Constant = { icon = "", hl = "@constant" },
String = { icon = "𝓐", hl = "@string" },
Number = { icon = "#", hl = "@number" },
Boolean = { icon = "⊨", hl = "@boolean" },
Array = { icon = "󰅪", hl = "@constant" },
Object = { icon = "⦿", hl = "@type" },
Key = { icon = "🔐", hl = "@type" },
Null = { icon = "NULL", hl = "@type" },
EnumMember = { icon = "", hl = "@field" },
Struct = { icon = "𝓢", hl = "@type" },
Event = { icon = "🗲", hl = "@type" },
Operator = { icon = "+", hl = "@operator" },
TypeParameter = { icon = "𝙏", hl = "@parameter" },
Component = { icon = "󰅴", hl = "@function" },
Fragment = { icon = "󰅴", hl = "@constant" },
-- ccls
TypeAlias = { icon = ' ', hl = '@type' },
Parameter = { icon = ' ', hl = '@parameter' },
StaticMethod = { icon = ' ', hl = '@function' },
Macro = { icon = ' ', hl = '@macro' },
},
}
```
## Commands
- **:SymbolsOutline[!]**
Toggle symbols outline. With bang (`!`) the cursor focus stays in your
original window after opening the outline window. Set `focus_on_win = true` to
always use this behaviour.
- **:SymbolsOutlineOpen[!]**
Open symbols outline. With bang (`!`) the cursor focus stays in your original
window after opening the outline window. Set `focus_on_win = true` to always
use this behaviour.
- **:SymbolsOutlineClose**
Close symbols outline
- **:SymbolsOutlineFocus**
Toggle focus on symbols outline
- **:SymbolsOutlineFocusOutline**
Focus on symbols outline
- **:SymbolsOutlineFocusCode**
Focus on source window
- **:SymbolsOutlineStatus**
Display current provider and outline window status in the messages area.
### Lua API
```lua
require'symbols-outline'
```
- setup(opts)
- **toggle_outline(opts)**
Toggle opening/closing of outline window.
If `opts.bang` is true, keep focus on previous window.
- **open_outline(opts)**
Open the outline window.
If `opts.bang` is true, keep focus on previous window.
- **close_outline()**
Close the outline window.
- **focus_toggle()**
Toggle cursor focus between code and outline window.
- **focus_outline()**
Focus cursor on the outline window.
- **focus_code()**
Focus cursor on the window which the outline is derived from.
- **is_open()**
Return whether the outline window is open.
- **show_status()**
Display current provider and outline window status in the messages area.
## Default keymaps
| Key | Action |
| ---------- | -------------------------------------------------- |
| Escape | Close outline |
| ? | Show help message |
| Enter | Go to symbol location in code |
| o | Go to symbol location in code without losing focus |
| Ctrl+Space | Hover current symbol |
| K | Toggles the current symbol preview |
| r | Rename symbol |
| a | Code actions |
| h | fold symbol |
| Tab | toggle fold under cursor |
| Shift+Tab | toggle all folds |
| l | Unfold symbol |
| W | Fold all symbols |
| E | Unfold all symbols |
| R | Reset all folding |
## Highlights
| Highlight | Purpose |
| ----------------------- | -------------------------------------- |
| FocusedSymbol | Highlight of the focused symbol |
| Pmenu | Highlight of the preview popup windows |
| SymbolsOutlineConnector | Highlight of the table connectors |
| Comment | Highlight of the info virtual text |
## Recipes
Behaviour you may want to achieve and the combination of configuration options
to achieve it.
**Unfold all others except currently hovered item**
```lua
autofold_depth = 1,
auto_unfold_hover = true,
```
<img width="900" alt="image" src="https://github.com/hedyhli/symbols-outline.nvim/assets/50042066/2e0c5f91-a979-4e64-a100-256ad062dce3">
Any other recipes you think others may also find useful? Feel free to open a PR.