diff options
Diffstat (limited to 'lua/telescope/actions/utils.lua')
| -rw-r--r-- | lua/telescope/actions/utils.lua | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/lua/telescope/actions/utils.lua b/lua/telescope/actions/utils.lua new file mode 100644 index 0000000..73045e7 --- /dev/null +++ b/lua/telescope/actions/utils.lua @@ -0,0 +1,81 @@ +---@tag telescope.actions.utils + +---@brief [[ +--- Utilities to wrap functions around picker selections and entries. +--- +--- Generally used from within other |telescope.actions| +---@brief ]] + +local action_state = require('telescope.actions.state') + +local utils = {} + +--- Apply `f` to the entries of the current picker. +--- - Notes: +--- - Mapped entries may include results not visible in the results popup. +--- - Indices are 1-indexed, whereas rows are 0-indexed. +--- - Warning: `map_entries` has no return value. +--- - The below example showcases how to collect results +--- <pre> +--- Usage: +--- local action_state = require "telescope.actions.state" +--- local action_utils = require "telescope.actions.utils" +--- function entry_value_by_row() +--- local prompt_bufnr = vim.api.nvim_get_current_buf() +--- local current_picker = action_state.get_current_picker(prompt_bufnr) +--- local results = {} +--- action_utils.map_entries(prompt_bufnr, function(entry, index, row) +--- results[row] = entry.value +--- end) +--- return results +--- end +--- </pre> +---@param prompt_bufnr number: The prompt bufnr +---@param f function: Function to map onto entries of picker that takes (entry, index, row) as viable arguments +function utils.map_entries(prompt_bufnr, f) + vim.validate{ + f = {f, "function"} + } + local current_picker = action_state.get_current_picker(prompt_bufnr) + local index = 1 + -- indices are 1-indexed, rows are 0-indexed + for entry in current_picker.manager:iter() do + local row = current_picker:get_row(index) + f(entry, index, row) + index = index + 1 + end +end + +--- Apply `f` to the multi selections of the current picker and return a table of mapped selections. +--- - Notes: +--- - Mapped selections may include results not visible in the results popup. +--- - Selected entries are returned in order of their selection. +--- - Warning: `map_selections` has no return value. +--- - The below example showcases how to collect results +--- <pre> +--- Usage: +--- local action_state = require "telescope.actions.state" +--- local action_utils = require "telescope.actions.utils" +--- function selection_by_index() +--- local prompt_bufnr = vim.api.nvim_get_current_buf() +--- local current_picker = action_state.get_current_picker(prompt_bufnr) +--- local results = {} +--- action_utils.map_selections(prompt_bufnr, function(entry, index) +--- results[index] = entry.value +--- end) +--- return results +--- end +--- </pre> +---@param prompt_bufnr number: The prompt bufnr +---@param f function: Function to map onto selection of picker that takes (selection) as a viable argument +function utils.map_selections(prompt_bufnr, f) + vim.validate{ + f = {f, "function"} + } + local current_picker = action_state.get_current_picker(prompt_bufnr) + for _, selection in ipairs(current_picker:get_multi_selection()) do + f(selection) + end +end + +return utils |
