Barrett Ruth
b41fab79a3
Problem: Deleting lines (`dd`, `dat`, `d3j`) left extmarks stranded on adjacent rows since `render()` only clears and reapplies marks on `:w`. Quickfix `<CR>` opened the pending buffer in a second window because `BufEnter` did not redirect to `task_winid`. Category fold state was lost across `<Tab>/<Tab>` view toggles because `render()` overwrote the saved state with an empty snapshot taken while folds were disabled. Solution: Add a `TextChanged`/`TextChangedI` autocmd that clears the extmark namespace immediately on any edit. Fix `BufEnter` to close duplicate windows and redirect focus to `task_winid`, updating it when stale. Fix `snapshot_folds` to skip if a state is already saved, and `restore_folds` to always clear the saved state; snapshot in `toggle_view` before the view flips so the state survives the round-trip.
432 lines
12 KiB
Lua
432 lines
12 KiB
Lua
local config = require('pending.config')
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local views = require('pending.views')
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---@class pending.buffer
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local M = {}
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---@type pending.Store?
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local _store = nil
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---@type integer?
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local task_bufnr = nil
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---@type integer?
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local task_winid = nil
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local task_ns = vim.api.nvim_create_namespace('pending')
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---@type 'category'|'priority'|nil
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local current_view = nil
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---@type pending.LineMeta[]
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local _meta = {}
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---@type table<integer, table<string, boolean>>
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local _fold_state = {}
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---@type string[]
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local _filter_predicates = {}
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---@type table<integer, true>
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local _hidden_ids = {}
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---@return pending.LineMeta[]
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function M.meta()
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return _meta
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end
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---@return integer?
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function M.bufnr()
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return task_bufnr
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end
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---@return integer?
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function M.winid()
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return task_winid
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end
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---@return string?
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function M.current_view_name()
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return current_view
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end
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---@param s pending.Store?
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---@return nil
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function M.set_store(s)
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_store = s
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end
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---@return pending.Store?
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function M.store()
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return _store
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end
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---@return string[]
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function M.filter_predicates()
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return _filter_predicates
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end
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---@return table<integer, true>
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function M.hidden_ids()
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return _hidden_ids
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end
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---@param predicates string[]
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---@param hidden table<integer, true>
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---@return nil
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function M.set_filter(predicates, hidden)
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_filter_predicates = predicates
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_hidden_ids = hidden
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end
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---@return nil
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function M.clear_winid()
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task_winid = nil
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end
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---@param winid integer
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---@return nil
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function M.update_winid(winid)
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task_winid = winid
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end
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---@param b? integer
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---@return nil
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function M.clear_marks(b)
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vim.api.nvim_buf_clear_namespace(b or task_bufnr, task_ns, 0, -1)
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end
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---@return nil
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function M.close()
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if not task_winid or not vim.api.nvim_win_is_valid(task_winid) then
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task_winid = nil
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return
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end
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local wins = vim.api.nvim_list_wins()
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if #wins == 1 then
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vim.cmd.enew()
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else
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vim.api.nvim_win_close(task_winid, false)
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end
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task_winid = nil
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end
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---@param bufnr integer
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local function set_buf_options(bufnr)
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vim.bo[bufnr].buftype = 'acwrite'
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vim.bo[bufnr].bufhidden = 'hide'
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vim.bo[bufnr].swapfile = false
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vim.bo[bufnr].filetype = 'pending'
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vim.bo[bufnr].modifiable = true
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vim.bo[bufnr].omnifunc = 'v:lua.require("pending.complete").omnifunc'
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end
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---@param winid integer
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local function set_win_options(winid)
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vim.wo[winid].conceallevel = 3
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vim.wo[winid].concealcursor = 'nvic'
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vim.wo[winid].winfixheight = true
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end
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---@param bufnr integer
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local function setup_syntax(bufnr)
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vim.api.nvim_buf_call(bufnr, function()
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vim.cmd([[
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syntax clear
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syntax match taskId /^\/\d\+\// conceal
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syntax match taskHeader /^# .*$/ contains=taskId
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syntax match taskCheckbox /\[!\]/ contained containedin=taskLine
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syntax match taskLine /^\/\d\+\/- \[.\] .*$/ contains=taskId,taskCheckbox
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]])
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end)
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end
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---@param above boolean
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---@return nil
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function M.open_line(above)
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local bufnr = task_bufnr
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if not bufnr or not vim.api.nvim_buf_is_valid(bufnr) then
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return
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end
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local row = vim.api.nvim_win_get_cursor(0)[1]
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local insert_row = above and (row - 1) or row
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vim.bo[bufnr].modifiable = true
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vim.api.nvim_buf_set_lines(bufnr, insert_row, insert_row, false, { '- [ ] ' })
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table.insert(_meta, insert_row + 1, { type = 'task' })
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vim.api.nvim_win_set_cursor(0, { insert_row + 1, 6 })
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vim.cmd('startinsert!')
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end
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---@return string
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function M.get_fold()
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local lnum = vim.v.lnum
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local m = _meta[lnum]
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if not m then
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return '0'
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end
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if m.type == 'header' then
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return '>1'
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elseif m.type == 'task' then
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return '1'
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else
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return '0'
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end
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end
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---@param bufnr integer
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---@param line_meta pending.LineMeta[]
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local function apply_extmarks(bufnr, line_meta)
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local icons = config.get().icons
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vim.api.nvim_buf_clear_namespace(bufnr, task_ns, 0, -1)
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for i, m in ipairs(line_meta) do
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local row = i - 1
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if m.type == 'filter' then
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local line = vim.api.nvim_buf_get_lines(bufnr, row, row + 1, false)[1] or ''
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vim.api.nvim_buf_set_extmark(bufnr, task_ns, row, 0, {
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end_col = #line,
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hl_group = 'PendingFilter',
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})
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elseif m.type == 'task' then
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local due_hl = m.overdue and 'PendingOverdue' or 'PendingDue'
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local virt_parts = {}
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if m.show_category and m.category then
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table.insert(virt_parts, { icons.category .. ' ' .. m.category, 'PendingHeader' })
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end
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if m.recur then
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table.insert(virt_parts, { icons.recur .. ' ' .. m.recur, 'PendingRecur' })
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end
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if m.due then
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table.insert(virt_parts, { icons.due .. ' ' .. m.due, due_hl })
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end
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if #virt_parts > 0 then
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for p = 1, #virt_parts - 1 do
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virt_parts[p][1] = virt_parts[p][1] .. ' '
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end
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vim.api.nvim_buf_set_extmark(bufnr, task_ns, row, 0, {
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virt_text = virt_parts,
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virt_text_pos = 'eol',
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})
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end
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if m.status == 'done' then
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local line = vim.api.nvim_buf_get_lines(bufnr, row, row + 1, false)[1] or ''
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local col_start = line:find('/%d+/') and select(2, line:find('/%d+/')) or 0
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vim.api.nvim_buf_set_extmark(bufnr, task_ns, row, col_start, {
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end_col = #line,
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hl_group = 'PendingDone',
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})
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end
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local line = vim.api.nvim_buf_get_lines(bufnr, row, row + 1, false)[1] or ''
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local bracket_col = (line:find('%[') or 1) - 1
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local icon, icon_hl
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if m.status == 'done' then
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icon, icon_hl = icons.done, 'PendingDone'
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elseif m.priority and m.priority > 0 then
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icon, icon_hl = icons.priority, 'PendingPriority'
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else
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icon, icon_hl = icons.pending, 'Normal'
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end
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vim.api.nvim_buf_set_extmark(bufnr, task_ns, row, bracket_col, {
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virt_text = { { '[' .. icon .. ']', icon_hl } },
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virt_text_pos = 'overlay',
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priority = 100,
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})
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elseif m.type == 'header' then
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local line = vim.api.nvim_buf_get_lines(bufnr, row, row + 1, false)[1] or ''
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vim.api.nvim_buf_set_extmark(bufnr, task_ns, row, 0, {
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end_col = #line,
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hl_group = 'PendingHeader',
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})
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vim.api.nvim_buf_set_extmark(bufnr, task_ns, row, 0, {
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virt_text = { { icons.category .. ' ', 'PendingHeader' } },
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virt_text_pos = 'overlay',
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priority = 100,
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})
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end
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end
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end
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local function setup_highlights()
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vim.api.nvim_set_hl(0, 'PendingHeader', { link = 'Title', default = true })
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vim.api.nvim_set_hl(0, 'PendingDue', { link = 'DiagnosticHint', default = true })
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vim.api.nvim_set_hl(0, 'PendingOverdue', { link = 'DiagnosticError', default = true })
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vim.api.nvim_set_hl(0, 'PendingDone', { link = 'Comment', default = true })
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vim.api.nvim_set_hl(0, 'PendingPriority', { link = 'DiagnosticWarn', default = true })
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vim.api.nvim_set_hl(0, 'PendingRecur', { link = 'DiagnosticInfo', default = true })
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vim.api.nvim_set_hl(0, 'PendingFilter', { link = 'DiagnosticWarn', default = true })
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end
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---@return string
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function M.get_foldtext()
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local folding = config.resolve_folding()
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if not folding.foldtext then
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return vim.fn.foldtext()
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end
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local line = vim.fn.getline(vim.v.foldstart)
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local cat = line:match('^#%s+(.+)$') or line
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local task_count = vim.v.foldend - vim.v.foldstart
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local icons = config.get().icons
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local result = folding.foldtext
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:gsub('%%c', cat)
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:gsub('%%n', tostring(task_count))
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:gsub('(%d+) (%w+)s%)', function(n, word)
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if n == '1' then
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return n .. ' ' .. word .. ')'
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end
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return n .. ' ' .. word .. 's)'
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end)
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return icons.category .. ' ' .. result
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end
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local function snapshot_folds(bufnr)
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if current_view ~= 'category' or not config.resolve_folding().enabled then
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return
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end
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for _, winid in ipairs(vim.fn.win_findbuf(bufnr)) do
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if _fold_state[winid] ~= nil then
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goto continue
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end
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local state = {}
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vim.api.nvim_win_call(winid, function()
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for lnum, m in ipairs(_meta) do
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if m.type == 'header' and m.category then
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if vim.fn.foldclosed(lnum) ~= -1 then
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state[m.category] = true
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end
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end
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end
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end)
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_fold_state[winid] = state
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::continue::
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end
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end
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local function restore_folds(bufnr)
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if current_view ~= 'category' or not config.resolve_folding().enabled then
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return
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end
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for _, winid in ipairs(vim.fn.win_findbuf(bufnr)) do
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local state = _fold_state[winid]
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_fold_state[winid] = nil
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if state and next(state) ~= nil then
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vim.api.nvim_win_call(winid, function()
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vim.cmd('normal! zx')
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local saved = vim.api.nvim_win_get_cursor(0)
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for lnum, m in ipairs(_meta) do
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if m.type == 'header' and m.category and state[m.category] then
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vim.api.nvim_win_set_cursor(0, { lnum, 0 })
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vim.cmd('normal! zc')
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end
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end
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vim.api.nvim_win_set_cursor(0, saved)
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end)
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end
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end
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end
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---@param bufnr? integer
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---@return nil
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function M.render(bufnr)
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bufnr = bufnr or task_bufnr
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if not bufnr or not vim.api.nvim_buf_is_valid(bufnr) then
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return
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end
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current_view = current_view or config.get().default_view
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local view_label = current_view == 'priority' and 'queue' or current_view
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vim.api.nvim_buf_set_name(bufnr, 'pending://' .. view_label)
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local all_tasks = _store and _store:active_tasks() or {}
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local tasks = {}
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for _, task in ipairs(all_tasks) do
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if not _hidden_ids[task.id] then
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table.insert(tasks, task)
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end
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end
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local lines, line_meta
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if current_view == 'priority' then
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lines, line_meta = views.priority_view(tasks)
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else
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lines, line_meta = views.category_view(tasks)
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end
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if #lines == 0 and #_filter_predicates == 0 then
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local default_cat = config.get().default_category
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lines = { '# ' .. default_cat }
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line_meta = { { type = 'header', category = default_cat } }
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end
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if #_filter_predicates > 0 then
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table.insert(lines, 1, 'FILTER: ' .. table.concat(_filter_predicates, ' '))
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table.insert(line_meta, 1, { type = 'filter' })
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end
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_meta = line_meta
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snapshot_folds(bufnr)
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vim.bo[bufnr].modifiable = true
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local saved = vim.bo[bufnr].undolevels
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vim.bo[bufnr].undolevels = -1
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vim.api.nvim_buf_set_lines(bufnr, 0, -1, false, lines)
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vim.bo[bufnr].modified = false
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vim.bo[bufnr].undolevels = saved
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setup_syntax(bufnr)
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apply_extmarks(bufnr, line_meta)
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local folding = config.resolve_folding()
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for _, winid in ipairs(vim.fn.win_findbuf(bufnr)) do
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if current_view == 'category' and folding.enabled then
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vim.wo[winid].foldmethod = 'expr'
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vim.wo[winid].foldexpr = 'v:lua.require("pending.buffer").get_fold()'
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vim.wo[winid].foldlevel = 99
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vim.wo[winid].foldenable = true
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if folding.foldtext then
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vim.wo[winid].foldtext = 'v:lua.require("pending.buffer").get_foldtext()'
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else
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vim.wo[winid].foldtext = 'foldtext()'
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end
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else
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vim.wo[winid].foldmethod = 'manual'
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vim.wo[winid].foldenable = false
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end
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end
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restore_folds(bufnr)
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end
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---@return nil
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function M.toggle_view()
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snapshot_folds(task_bufnr)
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if current_view == 'category' then
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current_view = 'priority'
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else
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current_view = 'category'
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end
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M.render()
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end
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---@return integer bufnr
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function M.open()
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setup_highlights()
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if _store then
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_store:load()
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end
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if task_winid and vim.api.nvim_win_is_valid(task_winid) then
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vim.api.nvim_set_current_win(task_winid)
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M.render(task_bufnr)
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return task_bufnr --[[@as integer]]
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end
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if not (task_bufnr and vim.api.nvim_buf_is_valid(task_bufnr)) then
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task_bufnr = vim.api.nvim_create_buf(true, false)
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set_buf_options(task_bufnr)
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end
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vim.cmd('botright new')
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task_winid = vim.api.nvim_get_current_win()
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vim.api.nvim_win_set_buf(task_winid, task_bufnr)
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local h = config.get().drawer_height
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if h and h > 0 then
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vim.api.nvim_win_set_height(task_winid, h)
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end
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set_win_options(task_winid)
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M.render(task_bufnr)
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return task_bufnr
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end
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return M
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