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-- Copyright 2007 Mitchell mitchell<att>caladbolg.net. See LICENSE.
---
-- Support for recording, saving, and playing macros for the textadept module.
--
-- Events:
-- macro_saved()
-- macro_deleted()
module('_m.textadept.macros', package.seeall)
local MACRO_FILE = _HOME..'/saved_macros'
---
-- The list of available macros.
-- Each key is the macro name, and the value is a numerically indexed table of
-- commands. Each command is a table with a structure as follows:
-- { command, wParam, lParam, type = 'function' or 'property' }
-- where command is the buffer function or property name (depending on type)
-- and wParam and lParam are the arguments for it.
-- @class table
-- @name list
list = {}
---
-- [Local table] The currently recording macro.
-- It is a numerically indexed table of commands with each command having the
-- same structure as described in list.
-- @class table
-- @name current
-- @see list
local current = {}
local recording = false
---
-- [Local function] Handles a Scintilla macro notification.
-- If a macro is being recorded, add this command to 'current'.
-- @param msg The Scintilla message ID.
local function macro_notification(msg, wParam, lParam)
if recording then
current[#current + 1] = { msg, wParam or '', lParam or '' }
textadept.statusbar_text = 'Macro recording'
end
end
textadept.events.add_handler('macro_record', macro_notification)
---
-- Starts recording a macro.
function start_recording()
if recording then return end
buffer:start_record()
current = {}
recording = true
textadept.statusbar_text = 'Macro recording'
end
---
-- Stops recording a macro.
-- Each command's msg in the recorded macro is changed to the name of the
-- message and the type of the command is changed appropriately (function or
-- property). Then the user is prompted for a macro name and the macro is saved
-- to the current macro list and macro file.
function stop_recording()
if not recording then return end
buffer:stop_record()
recording = false
local textadept = textadept
local bf, bp = textadept.buffer_functions, textadept.buffer_properties
local p = io.popen('zenity --entry --text "Macro name:"')
local macro_name = p:read('*all'):sub(1, -2)
p:close()
if #macro_name > 0 then
for _, command in ipairs(current) do
command.type = 'function'
local msg = command[1]
for f, t in pairs(bf) do
if t[1] == msg then command[1] = f break end
end
if type( command[1] ) ~= 'string' then
command.type = 'property'
for p, t in pairs(bp) do
if t[1] == msg or t[2] == msg then command[1] = p break end
end
end
end
list[macro_name] = current
save()
textadept.statusbar_text = 'Macro saved'
textadept.events.handle('macro_saved')
else
textadept.statusbar_text = 'Macro not saved'
end
end
---
-- Toggles between recording a macro and not recording one.
function toggle_record()
(not recording and start_recording or stop_recording)()
end
---
-- Plays a specified macro.
-- @param macro_name The name of the macro to play. If none specified, the user
-- is prompted to choose one from a list of available macros.
function play(macro_name)
if not macro_name then
local macro_list = ''
for name in pairs(list) do macro_list = macro_list..name..' ' end
local p = io.popen('zenity --list --text "Select a Macro" --column Name '..
macro_list)
macro_name = p:read('*all'):sub(1, -2)
p:close()
end
local macro = list[macro_name]
if not macro then return end
local buffer = buffer
for _, command in ipairs(macro) do
local cmd, wParam, lParam = unpack(command)
if command.type == 'function' then
buffer[cmd](buffer, wParam, lParam)
else
buffer[cmd] = #wParam > 0 and wParam or lParam
end
end
end
---
-- Deletes a specified macro.
-- @param macro_name The name of the macro to delete.
function delete(macro_name)
if list[macro_name] then
list[macro_name] = nil
save()
textadept.events.handle('macro_deleted')
end
end
---
-- Saves the current list of macros to a specified file.
-- @param filename The absolute path to the file to save the macros to.
function save(filename)
if not filename then filename = MACRO_FILE end
local f = assert( io.open(filename, 'w') )
for name, macro in pairs(list) do
f:write(name, '\n')
for _, command in ipairs(macro) do
f:write( ("%s\t%s\t%s\t%s\n"):format( command.type, unpack(command) ) )
end
f:write('\n')
end
f:close()
end
---
-- Loads macros from a specified file.
-- @param filename The absolute path to the file to load the macros from.
function load(filename)
if not filename then filename = MACRO_FILE end
local f = io.open(filename)
if not f then return end
local name, current_macro
for line in f:lines() do
if not name then -- new macro
name = line
current_macro = {}
else
if line == '' then -- finished; save current macro
list[name] = current_macro
name = nil
else
local type, cmd, wParam, lParam =
line:match('^([^\t]+)\t([^\t]+)\t?([^\t]*)\t?(.*)$')
if type and cmd then
local command = { cmd, wParam, lParam }
command.type = type
current_macro[#current_macro + 1] = command
end
end
end
end
end
load() -- load saved macros on startup
|
