0e785762f7
See reasoning in: simrat39/symbols-outline.nvim#212 This feature is turned off by default to avoid clutter, and many users might not want this feature on by default.
131 lines
3.3 KiB
Lua
131 lines
3.3 KiB
Lua
local parser = require 'symbols-outline.parser'
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local config = require 'symbols-outline.config'
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local ui = require 'symbols-outline.ui'
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local M = {}
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local function is_buffer_outline(bufnr)
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if not vim.api.nvim_buf_is_valid(bufnr) then
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return false
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end
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local name = vim.api.nvim_buf_get_name(bufnr)
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local ft = vim.api.nvim_buf_get_option(bufnr, 'filetype')
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return string.match(name, 'OUTLINE') ~= nil and ft == 'Outline'
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end
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local hlns = vim.api.nvim_create_namespace 'symbols-outline-icon-highlight'
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function M.write_outline(bufnr, lines)
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if not is_buffer_outline(bufnr) then
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return
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end
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lines = vim.tbl_map(function(line)
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lines, _ = string.gsub(line, "\n", " ")
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return lines
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end, lines)
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vim.api.nvim_buf_set_option(bufnr, 'modifiable', true)
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vim.api.nvim_buf_set_lines(bufnr, 0, -1, false, lines)
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vim.api.nvim_buf_set_option(bufnr, 'modifiable', false)
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end
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function M.add_highlights(bufnr, hl_info, nodes)
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for _, line_hl in ipairs(hl_info) do
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local line, hl_start, hl_end, hl_type = unpack(line_hl)
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vim.api.nvim_buf_add_highlight(
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bufnr,
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hlns,
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hl_type,
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line - 1,
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hl_start,
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hl_end
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)
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end
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M.add_hover_highlights(bufnr, nodes)
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end
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local ns = vim.api.nvim_create_namespace 'symbols-outline-virt-text'
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function M.write_details(bufnr, lines)
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if not is_buffer_outline(bufnr) then
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return
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end
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if not config.options.show_symbol_details then
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return
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end
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for index, value in ipairs(lines) do
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vim.api.nvim_buf_set_extmark(bufnr, ns, index - 1, -1, {
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virt_text = { { value, 'Comment' } },
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virt_text_pos = 'eol',
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hl_mode = 'combine',
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})
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end
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end
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function M.write_lineno(bufnr, lines, max)
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if not is_buffer_outline(bufnr) then
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return
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end
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if not config.options.show_symbol_lineno then
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return
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end
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local maxwidth = #tostring(max)
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for index, value in ipairs(lines) do
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local leftpad = string.rep(' ', maxwidth-#value)
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vim.api.nvim_buf_set_extmark(bufnr, ns, index - 1, -1, {
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virt_text = { {leftpad..value, 'LineNr' } },
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virt_text_pos = 'overlay',
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virt_text_win_col = 0,
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hl_mode = 'combine',
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})
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end
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end
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local function clear_virt_text(bufnr)
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vim.api.nvim_buf_clear_namespace(bufnr, -1, 0, -1)
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end
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M.add_hover_highlights = function(bufnr, nodes)
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if not config.options.highlight_hovered_item then
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return
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end
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-- clear old highlight
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ui.clear_hover_highlight(bufnr)
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for _, node in ipairs(nodes) do
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if not node.hovered then
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goto continue
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end
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local marker_fac = (config.options.fold_markers and 1) or 0
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if node.prefix_length then
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ui.add_hover_highlight(
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bufnr,
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node.line_in_outline - 1,
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node.prefix_length
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)
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end
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::continue::
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end
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end
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-- runs the whole writing routine where the text is cleared, new data is parsed
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-- and then written
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function M.parse_and_write(bufnr, flattened_outline_items)
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local lines, hl_info = parser.get_lines(flattened_outline_items)
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M.write_outline(bufnr, lines)
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clear_virt_text(bufnr)
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local details = parser.get_details(flattened_outline_items)
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local lineno, lineno_max = parser.get_lineno(flattened_outline_items)
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M.add_highlights(bufnr, hl_info, flattened_outline_items)
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M.write_details(bufnr, details)
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M.write_lineno(bufnr, lineno, lineno_max)
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end
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return M
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