106 lines
3.6 KiB
Lua
106 lines
3.6 KiB
Lua
---@tag telescope.actions.utils
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---@brief [[
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--- Utilities to wrap functions around picker selections and entries.
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---
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--- Generally used from within other |telescope.actions|
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---@brief ]]
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local action_state = require "telescope.actions.state"
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local utils = {}
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--- Apply `f` to the entries of the current picker.
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--- - Notes:
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--- - Mapped entries may include results not visible in the results popup.
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--- - Indices are 1-indexed, whereas rows are 0-indexed.
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--- - Warning: `map_entries` has no return value.
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--- - The below example showcases how to collect results
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---
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--- Usage:
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--- <code>
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--- local action_state = require "telescope.actions.state"
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--- local action_utils = require "telescope.actions.utils"
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--- function entry_value_by_row()
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--- local prompt_bufnr = vim.api.nvim_get_current_buf()
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--- local current_picker = action_state.get_current_picker(prompt_bufnr)
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--- local results = {}
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--- action_utils.map_entries(prompt_bufnr, function(entry, index, row)
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--- results[row] = entry.value
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--- end)
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--- return results
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--- end
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--- </code>
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---@param prompt_bufnr number: The prompt bufnr
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---@param f function: Function to map onto entries of picker that takes (entry, index, row) as viable arguments
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function utils.map_entries(prompt_bufnr, f)
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vim.validate {
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f = { f, "function" },
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}
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local current_picker = action_state.get_current_picker(prompt_bufnr)
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local index = 1
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-- indices are 1-indexed, rows are 0-indexed
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for entry in current_picker.manager:iter() do
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local row = current_picker:get_row(index)
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f(entry, index, row)
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index = index + 1
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end
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end
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--- Apply `f` to the multi selections of the current picker and return a table of mapped selections.
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--- - Notes:
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--- - Mapped selections may include results not visible in the results popup.
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--- - Selected entries are returned in order of their selection.
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--- - Warning: `map_selections` has no return value.
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--- - The below example showcases how to collect results
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---
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--- Usage:
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--- <code>
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--- local action_state = require "telescope.actions.state"
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--- local action_utils = require "telescope.actions.utils"
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--- function selection_by_index()
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--- local prompt_bufnr = vim.api.nvim_get_current_buf()
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--- local current_picker = action_state.get_current_picker(prompt_bufnr)
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--- local results = {}
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--- action_utils.map_selections(prompt_bufnr, function(entry, index)
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--- results[index] = entry.value
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--- end)
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--- return results
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--- end
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--- </code>
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---@param prompt_bufnr number: The prompt bufnr
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---@param f function: Function to map onto selection of picker that takes (selection) as a viable argument
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function utils.map_selections(prompt_bufnr, f)
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vim.validate {
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f = { f, "function" },
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}
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local current_picker = action_state.get_current_picker(prompt_bufnr)
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for _, selection in ipairs(current_picker:get_multi_selection()) do
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f(selection)
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end
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end
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local findnth = function(str, nth)
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local array = {}
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for i in string.gmatch(str, "%d+") do
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table.insert(array, tonumber(i))
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end
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return array[nth]
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end
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--- Utility to collect mappings of prompt buffer in array of `{mode, keybind, name}`.
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---@param prompt_bufnr number: The prompt bufnr
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function utils.get_registered_mappings(prompt_bufnr)
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local ret = {}
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for _, mode in ipairs { "n", "i" } do
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local mode_mappings = vim.api.nvim_buf_get_keymap(prompt_bufnr, mode)
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for _, mapping in ipairs(mode_mappings) do
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local funcid = findnth(mapping.rhs, 2)
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table.insert(ret, { mode = mode, keybind = mapping.lhs, func = __TelescopeKeymapStore[prompt_bufnr][funcid] })
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end
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end
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return ret
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end
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return utils
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