v0.1.0 (alpha) #1
210
presser/init.lua
210
presser/init.lua
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@ -1,198 +1,34 @@
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local popup = require'plenary.popup'
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local utils = require'presser.utils'
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local gcm = require('presser.context_manager')
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local builtins = require'presser.builtins'
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local api = vim.api
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local a = vim.api
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local presser = {} -- list of functions to be exported
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-- :@Dev: close all Presser windows that may be open for all contexts
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presser.close = function ()
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gcm.flush() -- invoke the context manager to flush the table
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end
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-- @Description: Construct a new instance of a window and buffer using the 'plenary.popup' module.
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-- @Params:
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-- + `_type` ~ string denoting which context manager is owner of the window.
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-- + `placeholder` ~ string allowing for placeholder text to be placed within the buffer when constructed.
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-- + `opts` ~ a table of additional options to be provided when constructing the window.
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-- @Returns: nil. Constructs a new window and stores the window's ID in a global table.
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--
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-- @Dev: This function is to be as generic for creating a window whilst allowing for as much customisation over the
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-- window/buffer which are to be constructed. Users are to access this function so is not part of the module export.
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-- However, it's used by all internal built-ins which are meant to be used by users. Consider a class constructor in
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-- C++, this function is akin to that behaviour and is responsible for constructing the window/buffer and ensuring it
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-- can be tracked by Vim itself.
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local new = function ( _ctx, label, opts )
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presser.setup = function ( opts )
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local opts = opts or {}
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if not opts.placeholder then
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opts["placeholder"] = ""
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end
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-- @Dev: TODO - construct setup function for configs
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--
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local buf_opts = {
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minwidth = 80, -- getwin_w() / 2 - ((getwin_w() % 2) / 2),
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borderchars = { "─", "│", "─", "│", "╭", "╮", "╯", "╰" },
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--map("n", "<Leader>h", "<cmd>lua require'presser'.find_replace()<CR>") -- global replace with last buffer item
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a.nvim_create_user_command(
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'Presser',
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function ( o )
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local args = {}
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for arg in string.gmatch( o.args, "%S+" ) do
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table.insert( args, arg )
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end
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builtins[args[1]]()
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end,
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{
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nargs = 1,
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complete = function (ArgLead, CmdLine, CursorPos)
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return { 'find_replace' }
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end,
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}
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if opts.window then
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for k,v in pairs( opts.window ) do
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buf_opts[k] = v
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end
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end
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local obj = popup.create( opts.placeholder, buf_opts )
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gcm.update( _ctx, { id = obj, what = label, allowed = opts.allowed } )
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-- :TODO: call update function in context manager
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-- table.insert( manager[_type], obj )
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-- g.presser_buf_ctx = manager
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-- :@Dev: handle for keybindings (TODO: any future stuff below here once window is made)
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local buf_id = function ()
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return api.nvim_win_get_buf(obj)
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end
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-- handle for key bindings
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if opts.keybinds then
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for mode, mode_map in pairs( opts.keybinds ) do
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mode = string.lower(mode)
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for key_bind, key_action in pairs(mode_map) do
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local key_bind = api.nvim_replace_termcodes(key_bind, true, false, true),
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api.nvim_buf_set_keymap(buf_id(), mode, key_bind, key_action,
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{ noremap = true, silent = true }
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)
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end
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end
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end
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end
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presser.move_next_buffer = function ()
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local ctxs = 0
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local c = vim.g.presser_buf_ctx
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local buf = api.nvim_get_current_buf()
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for _, v in pairs( c ) do for idx, _ in pairs( v ) do ctxs = idx end end
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for ctx, ctx_obj in pairs( c ) do
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for idx, obj in pairs( ctx_obj ) do
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if api.nvim_win_get_buf( obj.id ) == buf then
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-- get the next window, and put cursor there
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local s = idx
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repeat
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local win = ctx_obj[(idx % ctxs) + 1]
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if win.allowed then
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api.nvim_set_current_win( ctx_obj[(idx % ctxs) + 1].id )
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break
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end
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idx = (idx % ctxs) + 1
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until s == idx
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end
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end
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end
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end
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local read_buffer = function ()
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local c = vim.g.presser_buf_ctx
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local b = {}
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for ctx, ctx_obj in pairs( c ) do
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for idx, obj in pairs( ctx_obj ) do
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if obj.allowed then
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local buf = api.nvim_win_get_buf( obj.id )
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table.insert(b, utils.clean_buf( api.nvim_buf_get_lines( buf, 0, -1, false )[1] ))
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end
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end
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end
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return b
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end
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presser.execute = function ()
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local result = read_buffer()
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presser.close()
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local cmd = ":%s/" .. result[1] .. "/" .. result[2] .. "/g"
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api.nvim_exec( cmd, false )
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end
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local start_buffer = function ( label )
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for ctx, ctx_obj in pairs( vim.g.presser_buf_ctx ) do
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for idx, record in pairs( ctx_obj ) do
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if record.what == label then
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api.nvim_set_current_win( record.id )
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end
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end
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end
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end
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-- @Description: Find and replace words within the current buffer.
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-- @Params:
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-- @Returns: nil.
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--
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-- @Dev: function is responsible to creating all required buffers to allow full user interaction.
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--
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-- @Future: implementation may allow for greater user customisation similar to what's found with
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-- extensions such as Telescope. For now, it should provide a concrete UI for purpose of design.
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function presser.find_replace()
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-- define the context which these windows will belong to in the context manager.
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local ctx = "find_replace"
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gcm.create( ctx )
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local keymap = {
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n = {
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["<esc>"] = "<cmd>lua require'presser'.close()<CR>",
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["<A-a>"] = "<cmd>lua require'presser'.execute()<CR>",
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},
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i = {
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["<Tab>"] = "<cmd>lua require'presser'.move_next_buffer()<CR>",
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["<A-a>"] = "<cmd>lua require'presser'.execute()<CR>",
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}
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}
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-- get the centre of the current buffer
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local c_cols = math.floor( api.nvim_win_get_width(0) / 2 )
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local c_lines = math.floor( api.nvim_win_get_height(0) / 2 )
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-- print(c_cols, c_lines)
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-- options for the title buffer of the built-in
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local opts = {
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placeholder = "Find & Replace",
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allowed = false,
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window = {
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line = c_lines - 3,
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border = false,
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minwidth = 82,
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padding = { 0, 1, 1, 1 }
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},
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}
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local tab_title = new( ctx, "presser_fr_title", opts )
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-- options for the replace buffer
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local opts = {
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window = {
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line = c_lines,
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title = "Find",
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},
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keybinds = keymap,
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}
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local find = new ( ctx, "find_buf", opts )
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-- modify options for find buffer
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opts["window"]["line"] = c_lines+3
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opts["window"]["title"] = "Replace"
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local replace = new( ctx, "replace_buf", opts )
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local result = start_buffer( "find_buf" )
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api.nvim_feedkeys('A', 'n', false)
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end
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--presser.find_replace()
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return presser
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