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feat(filter): oil-like editable filter line (#43)

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* feat(filter): oil-like editable filter line with predicate dispatch

Problem: no way to narrow the pending buffer to a subset of tasks
without manual scrolling; filtered-out tasks would be silently deleted
on :w because diff.apply() marks unseen IDs as deleted.

Solution: add a FILTER: line rendered at the top of the buffer when a
filter is active. The line is editable — :w re-parses it and updates
the hidden set. diff.apply() gains a hidden_ids param that prevents
filtered-out tasks from being marked deleted. Predicates: cat:X,
overdue, today, priority (space-separated AND). :Pending filter sets
it programmatically; :Pending filter clear removes it.

* ci: format
This commit is contained in:
Barrett Ruth 2026-02-26 18:29:56 -05:00
parent 306e11aee6
commit 836a53b541
7 changed files with 526 additions and 8 deletions
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44
lua/pending/buffer.lua
View file

@ -16,6 +16,10 @@ local current_view = nil
local _meta = {}
---@type table<integer, table<string, boolean>>
local _fold_state = {}
---@type string[]
local _filter_predicates = {}
---@type table<integer, true>
local _hidden_ids = {}
---@return pending.LineMeta[]
function M.meta()
@ -37,6 +41,24 @@ function M.current_view_name()
return current_view
end
---@return string[]
function M.filter_predicates()
return _filter_predicates
end
---@return table<integer, true>
function M.hidden_ids()
return _hidden_ids
end
---@param predicates string[]
---@param hidden table<integer, true>
---@return nil
function M.set_filter(predicates, hidden)
_filter_predicates = predicates
_hidden_ids = hidden
end
---@return nil
function M.clear_winid()
task_winid = nil
@ -124,7 +146,13 @@ local function apply_extmarks(bufnr, line_meta)
vim.api.nvim_buf_clear_namespace(bufnr, task_ns, 0, -1)
for i, m in ipairs(line_meta) do
local row = i - 1
if m.type == 'task' then
if m.type == 'filter' then
local line = vim.api.nvim_buf_get_lines(bufnr, row, row + 1, false)[1] or ''
vim.api.nvim_buf_set_extmark(bufnr, task_ns, row, 0, {
end_col = #line,
hl_group = 'PendingFilter',
})
elseif m.type == 'task' then
local due_hl = m.overdue and 'PendingOverdue' or 'PendingDue'
local virt_parts = {}
if m.show_category and m.category then
@ -170,6 +198,7 @@ local function setup_highlights()
vim.api.nvim_set_hl(0, 'PendingDone', { link = 'Comment', default = true })
vim.api.nvim_set_hl(0, 'PendingPriority', { link = 'DiagnosticWarn', default = true })
vim.api.nvim_set_hl(0, 'PendingRecur', { link = 'DiagnosticInfo', default = true })
vim.api.nvim_set_hl(0, 'PendingFilter', { link = 'DiagnosticWarn', default = true })
end
local function snapshot_folds(bufnr)
@ -225,7 +254,13 @@ function M.render(bufnr)
current_view = current_view or config.get().default_view
local view_label = current_view == 'priority' and 'queue' or current_view
vim.api.nvim_buf_set_name(bufnr, 'pending://' .. view_label)
local tasks = store.active_tasks()
local all_tasks = store.active_tasks()
local tasks = {}
for _, task in ipairs(all_tasks) do
if not _hidden_ids[task.id] then
table.insert(tasks, task)
end
end
local lines, line_meta
if current_view == 'priority' then
@ -234,6 +269,11 @@ function M.render(bufnr)
lines, line_meta = views.category_view(tasks)
end
if #_filter_predicates > 0 then
table.insert(lines, 1, 'FILTER: ' .. table.concat(_filter_predicates, ' '))
table.insert(line_meta, 1, { type = 'filter' })
end
_meta = line_meta
snapshot_folds(bufnr)