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local a = vim.api
local conf = require("telescope.config").values
local highlights = {}
local ns_telescope_selection = a.nvim_create_namespace "telescope_selection"
local ns_telescope_multiselection = a.nvim_create_namespace "telescope_multiselection"
local ns_telescope_entry = a.nvim_create_namespace "telescope_entry"
local ns_telescope_matching = a.nvim_create_namespace "telescope_matching"
-- Priorities for extmark highlights. Example: Treesitter is set to 100
local SELECTION_MULTISELECT_PRIORITY = 100
local DISPLAY_HIGHLIGHTS_PRIORITY = 110
local SELECTION_HIGHLIGHTS_PRIORITY = 130
local SORTER_HIGHLIGHTS_PRIORITY = 140
local Highlighter = {}
Highlighter.__index = Highlighter
function Highlighter:new(picker)
return setmetatable({
picker = picker,
}, self)
end
function Highlighter:hi_display(row, prefix, display_highlights)
-- This is the bug that made my highlight fixes not work.
-- We will leave the solution commented, so the test fails.
if not display_highlights or vim.tbl_isempty(display_highlights) then
return
end
local results_bufnr = assert(self.picker.results_bufnr, "Must have a results bufnr")
if not a.nvim_buf_is_valid(results_bufnr) then
return
end
a.nvim_buf_clear_namespace(results_bufnr, ns_telescope_entry, row, row + 1)
for _, hl_block in ipairs(display_highlights) do
a.nvim_buf_set_extmark(results_bufnr, ns_telescope_entry, row, #prefix + hl_block[1][1], {
end_col = #prefix + hl_block[1][2],
hl_group = hl_block[2],
priority = DISPLAY_HIGHLIGHTS_PRIORITY,
strict = false,
})
end
end
function Highlighter:clear_display()
if
not self
or not self.picker
or not self.picker.results_bufnr
or not vim.api.nvim_buf_is_valid(self.picker.results_bufnr)
then
return
end
a.nvim_buf_clear_namespace(self.picker.results_bufnr, ns_telescope_entry, 0, -1)
end
function Highlighter:hi_sorter(row, prompt, display)
local picker = self.picker
if not picker.sorter or not picker.sorter.highlighter then
return
end
local results_bufnr = assert(self.picker.results_bufnr, "Must have a results bufnr")
if not a.nvim_buf_is_valid(results_bufnr) then
return
end
local sorter_highlights = picker.sorter:highlighter(prompt, display)
if sorter_highlights then
for _, hl in ipairs(sorter_highlights) do
local highlight, start, finish
if type(hl) == "table" then
highlight = hl.highlight or "TelescopeMatching"
start = hl.start
finish = hl.finish or hl.start
elseif type(hl) == "number" then
highlight = "TelescopeMatching"
start = hl
finish = hl
else
error "Invalid highlight"
end
a.nvim_buf_set_extmark(results_bufnr, ns_telescope_matching, row, start - 1, {
end_col = finish,
hl_group = highlight,
priority = SORTER_HIGHLIGHTS_PRIORITY,
strict = false,
})
end
end
end
function Highlighter:hi_selection(row, caret)
caret = vim.F.if_nil(caret, "")
local results_bufnr = assert(self.picker.results_bufnr, "Must have a results bufnr")
a.nvim_buf_clear_namespace(results_bufnr, ns_telescope_selection, 0, -1)
-- Skip if there is nothing on the actual line
local line = a.nvim_buf_get_lines(results_bufnr, row, row + 1, false)[1]
if line == nil or line == "" then
return
end
local offset = #caret
-- Highlight the caret
a.nvim_buf_set_extmark(results_bufnr, ns_telescope_selection, row, 0, {
virt_text = { { caret, "TelescopeSelectionCaret" } },
virt_text_pos = "overlay",
end_col = offset,
hl_group = "TelescopeSelectionCaret",
hl_mode = "combine",
priority = SELECTION_HIGHLIGHTS_PRIORITY,
strict = true,
})
-- Highlight the text after the caret
a.nvim_buf_set_extmark(results_bufnr, ns_telescope_selection, row, offset, {
end_line = row + 1,
hl_eol = conf.hl_result_eol,
hl_group = "TelescopeSelection",
priority = SELECTION_HIGHLIGHTS_PRIORITY,
})
end
function Highlighter:hi_multiselect(row, is_selected)
local results_bufnr = assert(self.picker.results_bufnr, "Must have a results bufnr")
if not a.nvim_buf_is_valid(results_bufnr) then
return
end
a.nvim_buf_clear_namespace(results_bufnr, ns_telescope_multiselection, row, row + 1)
local line = a.nvim_buf_get_lines(results_bufnr, row, row + 1, false)[1]
if line == nil or line == "" then
return
end
if is_selected then
local multi_icon = self.picker.multi_icon
local offset = #multi_icon
a.nvim_buf_set_extmark(results_bufnr, ns_telescope_multiselection, row, offset, {
virt_text = { { multi_icon, "TelescopeMultiIcon" } },
virt_text_pos = "overlay",
end_col = offset,
hl_mode = "combine",
hl_group = "TelescopeMultiIcon",
priority = SELECTION_HIGHLIGHTS_PRIORITY,
})
-- highlight the caret
a.nvim_buf_set_extmark(results_bufnr, ns_telescope_multiselection, row, 0, {
end_col = #self.picker.selection_caret,
hl_group = "TelescopeMultiSelection",
priority = SELECTION_MULTISELECT_PRIORITY,
})
-- highlight the text after the multi_icon
a.nvim_buf_set_extmark(results_bufnr, ns_telescope_multiselection, row, offset, {
end_col = #line,
hl_group = "TelescopeMultiSelection",
priority = SELECTION_MULTISELECT_PRIORITY,
})
end
end
highlights.new = function(...)
return Highlighter:new(...)
end
return highlights
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