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1528 lines (1186 loc) · 45.1 KB
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--[[
This file is part of darktable,
copyright (c) 2018, 2020, 2023, 2024 Bill Ferguson <wpferguson@gmail.com>
darktable is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
darktable is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with darktable. If not, see <http://www.gnu.org/licenses/>.
]]
--[[
script_manager.lua - a tool for managing the darktable lua scripts
script_manager is designed to be called from the users luarc file and used to
manage the lua scripts.
On startup script_manager scans the lua scripts directory to see what scripts are present.
Scripts are sorted by 'folder' based on what sub-directory they are in. With no
additional script repositories iinstalled, the folders are contrib, examples, official
and tools. When a folder is selected the buttons show the script name and whether the
script is started or stopped. The button is a toggle, so if the script is stopped click
the button to start it and vice versa.
Features
* the number of script buttons shown can be changed to any number between 5 and 20. The
default is 10 buttons. This can be changed in the configuration action.
* additional repositories of scripts may be installed using from the install/update action.
* installed scripts can be updated from the install/update action. This includes extra
repositories that have been installed.
* the scripts can be disabled if desired from the install/update action. This can only
be reversed manually. To enable the "Disable Scripts" button, check the checkbox to
endable it. This is to prevent accidentally disabling the scripts. Click the
"Disable Scripts" button and the luarc file is renamed to luarc.disable. If at
a later time you want to enable the scripts again, simply rename the luarc.disabled
file to luarc and the scripts will run.
]]
local dt = require "darktable"
local du = require "lib/dtutils"
local df = require "lib/dtutils.file"
local ds = require "lib/dtutils.string"
local dtsys = require "lib/dtutils.system"
local log = require "lib/dtutils.log"
local debug = require "darktable.debug"
local gettext = dt.gettext.gettext
local function _(msgid)
return gettext(msgid)
end
-- api check
-- du.check_min_api_version("9.3.0", "script_manager")
-- - - - - - - - - - - - - - - - - - - - - - - -
-- C O N S T A N T S
-- - - - - - - - - - - - - - - - - - - - - - - -
-- script_manager required API version
local SM_API_VER_REQD <const> = "9.3.0"
-- path separator
local PS <const> = dt.configuration.running_os == "windows" and "\\" or "/"
-- command separator
local CS <const> = dt.configuration.running_os == "windows" and "&" or ";"
local MODULE <const> = "script_manager"
local MIN_BUTTONS_PER_PAGE <const> = 5
local MAX_BUTTONS_PER_PAGE <const> = 20
local DEFAULT_BUTTONS_PER_PAGE <const> = 10
local DEFAULT_LOG_LEVEL <const> = log.warn
local LUA_DIR <const> = dt.configuration.config_dir .. PS .. "lua"
local LUA_SCRIPT_REPO <const> = "https://github.com/darktable-org/lua-scripts.git"
local LUA_API_VER <const> = "API-" .. dt.configuration.api_version_string
-- local POWER_ICON = dt.configuration.config_dir .. "/lua/data/data/icons/power.png"
local POWER_ICON <const> = dt.configuration.config_dir .. "/lua/data/icons/path20.png"
local BLANK_ICON <const> = dt.configuration.config_dir .. "/lua/data/icons/blank20.png"
-- - - - - - - - - - - - - - - - - - - - - - - -
-- P R E F E R E N C E S
-- - - - - - - - - - - - - - - - - - - - - - - -
dt.preferences.register(MODULE, "check_update", "bool",
_("check for updated scripts on start up"),
_("automatically update scripts to correct version"),
true)
local check_for_updates = dt.preferences.read(MODULE, "check_update", "bool")
-- - - - - - - - - - - - - - - - - - - - - - - -
-- L O G L E V E L
-- - - - - - - - - - - - - - - - - - - - - - - -
local old_log_level = log.log_level()
log.log_level(DEFAULT_LOG_LEVEL)
-- - - - - - - - - - - - - - - - - - - - - - - -
-- N A M E S P A C E
-- - - - - - - - - - - - - - - - - - - - - - - -
local script_manager = {}
local sm = script_manager
sm.executables = {}
sm.executables.git = df.check_if_bin_exists("git")
sm.module_installed = false
sm.event_registered = false
-- set up tables to contain all the widgets and choices
sm.widgets = {}
sm.folders = {}
-- set log level for functions
sm.log_level = DEFAULT_LOG_LEVEL
--[[
sm.scripts is a table of tables for containing the scripts
It is organized as into folder (folder) subtables containing
each script definition, which is a table
sm.scripts-
|
- folder------------|
| - script
- folder----| |
- script|
| - script
- script|
and a script table looks like
name the name of the script file without the lua extension
path folder (folder), path separator, path, name without the lua extension
doc the header comments from the script to be used as a tooltip
script_name the folder, path separator, and name without the lua extension
running true if running, false if not, hidden if running but the
lib/storage/action for the script is hidden
has_lib true if it creates a module
lib_name name of the created lib
has_storage true if it creates a storage (exporter)
storage_name name of the exporter (in the exporter storage menu)
has_action true if it creates an action
action_name name on the button
has_select true if it creates a select
select_name name on the button
has_event true if it creates an event handler
event_type type of event, shortcut, post-xxx, pre-xxx
callback name of the callback routine
initialized all of the above data has been retreived and set. If the
script is unloaded and reloaded we don't have to reparse the file
]]
sm.scripts = {}
sm.page_status = {}
sm.page_status.num_buttons = DEFAULT_BUTTONS_PER_PAGE
sm.page_status.buttons_created = 0
sm.page_status.current_page = 0
sm.page_status.folder = ""
-- installed script repositories
sm.installed_repositories = {
{name = "lua-scripts", directory = LUA_DIR},
}
-- don't let it run until everything is in place
sm.run = false
-- - - - - - - - - - - - - - - - - - - - - - - -
-- F U N C T I O N S
-- - - - - - - - - - - - - - - - - - - - - - - -
-------------------
-- helper functions
-------------------
local function set_log_level(level)
local old_log_level = log.log_level()
log.log_level(level)
return old_log_level
end
local function restore_log_level(level)
log.log_level(level)
end
local function pref_read(name, pref_type)
local old_log_level = set_log_level(sm.log_level)
log.msg(log.debug, "name is " .. name .. " and type is " .. pref_type)
local val = dt.preferences.read(MODULE, name, pref_type)
log.msg(log.debug, "read value " .. tostring(val))
restore_log_level(old_log_level)
return val
end
local function pref_write(name, pref_type, value)
local old_log_level = set_log_level(sm.log_level)
log.msg(log.debug, "writing value " .. tostring(value) .. " for name " .. name)
dt.preferences.write(MODULE, name, pref_type, value)
restore_log_level(old_log_level)
end
----------------
-- git interface
----------------
local function get_repo_status(repo)
local old_log_level = set_log_level(sm.log_level)
local p = io.popen("cd " .. repo .. CS .. "git status")
if p then
local data = p:read("*a")
p:close()
return data
end
log.msg(log.error, "unable to get status of " .. repo)
restore_log_level(old_log_level)
return nil
end
local function get_current_repo_branch(repo)
local old_log_level = set_log_level(sm.log_level)
local branch = nil
local p = io.popen("cd " .. repo .. CS .. "git branch --all")
if p then
local data = p:read("*a")
p:close()
local branches = du.split(data, "\n")
for _, b in ipairs(branches) do
log.msg(log.debug, "branch for testing is " .. b)
branch = string.match(b, "^%* (.-)$")
if branch then
log.msg(log.info, "current repo branch is " .. branch)
return branch
end
end
end
if not branch then
log.msg(log.error, "no current branch detected in repo_data")
end
restore_log_level(old_log_level)
return nil
end
local function get_repo_branches(repo)
local old_log_level = set_log_level(sm.log_level)
local branches = {}
local p = io.popen("cd " .. repo .. CS .. "git pull --all" .. CS .. "git branch --all")
if p then
local data = p:read("*a")
p:close()
log.msg(log.debug, "data is \n" .. data)
local branch_data = du.split(data, "\n")
for _, line in ipairs(branch_data) do
log.msg(log.debug, "line is " .. line)
local branch = string.gsub(line, "%s+remotes/%a+/", "")
if string.match(branch, "API") then
log.msg(log.info, "found branch - " .. branch)
table.insert(branches, branch)
end
end
end
restore_log_level(old_log_level)
return branches
end
local function is_repo_clean(repo_data)
local old_log_level = set_log_level(sm.log_level)
if string.match(repo_data, "\n%s-%a.-%a:%s-%a%g-\n") then
log.msg(log.info, "repo is dirty")
return false
else
log.msg(log.info, "repo is clean")
return true
end
restore_log_level(old_log_level)
end
local function checkout_repo_branch(repo, branch)
local old_log_level = set_log_level(sm.log_level)
log.msg(log.info, "checkout out branch " .. branch .. " from repository " .. repo)
os.execute("cd " .. repo .. CS .. "git checkout " .. branch)
restore_log_level(old_log_level)
end
--------------------
-- utility functions
--------------------
local function update_combobox_choices(combobox, choice_table, selected)
local old_log_level = set_log_level(sm.log_level)
local items = #combobox
local choices = #choice_table
for i, name in ipairs(choice_table) do
combobox[i] = name
end
if choices < items then
for j = items, choices + 1, -1 do
combobox[j] = nil
end
end
if not selected then
selected = 1
end
combobox.value = selected
restore_log_level(old_log_level)
end
local function string_trim(str)
local old_log_level = set_log_level(sm.log_level)
local result = string.gsub(str, "^%s+", "")
result = string.gsub(result, "%s+$", "")
restore_log_level(old_log_level)
return result
end
local function string_dequote(str)
return string.gsub(str, "['\"]", "")
end
local function string_dei18n(str)
return string.match(str, "%_%((.+)%)")
end
local function string_chop(str)
return str:sub(1, -2)
end
------------------
-- script handling
------------------
local function add_script_folder(folder)
local old_log_level = set_log_level(sm.log_level)
if #sm.folders == 0 or not string.match(du.join(sm.folders, " "), ds.sanitize_lua(folder)) then
table.insert(sm.folders, folder)
sm.scripts[folder] = {}
log.msg(log.debug, "created folder " .. folder)
end
restore_log_level(old_log_level)
end
local function get_script_metadata(script)
local old_log_level = set_log_level(sm.log_level)
-- set_log_level(log.debug)
log.msg(log.debug, "processing metatdata for " .. script)
local description = nil
local metadata = nil
f = io.open(LUA_DIR .. PS .. script .. ".lua")
if f then
-- slurp the file
local content = f:read("*all")
f:close()
-- grab the script_data.metadata table
description = string.match(content, "script_data%.metadata = %{\r?\n(.-)\r?\n%}")
else
log.msg(log.error, "cant read from " .. script)
end
if description then
metadata = ""
-- format it into a string block for display
local lines = du.split(description, "\n")
log.msg(log.debug, "got " .. #lines .. " lines")
local first = 1
for i = 1, #lines do
log.msg(log.debug, "splitting line " .. lines[i])
local parts = du.split(lines[i], " = ")
log.msg(log.debug, "got value " .. parts[1] .. " and data " .. parts[2])
if string.match(parts[2], "%_%(") then
parts[2] = _(string_dequote(string_dei18n(parts[2])))
else
parts[2] = string_dequote(parts[2])
end
if string.match(parts[2], ",$") then
parts[2] = string_chop(parts[2])
end
metadata = metadata .. string.format("%s%-10s\t%s", first and "" or "\n", parts[1], parts[2])
first = nil
end
log.msg(log.debug, "script data is \n" .. metadata)
end
restore_log_level(old_log_level)
return metadata
end
local function get_script_doc(script)
local old_log_level = set_log_level(sm.log_level)
local description = nil
f = io.open(LUA_DIR .. PS .. script .. ".lua")
if f then
-- slurp the file
local content = f:read("*all")
f:close()
-- assume that the second block comment is the documentation
description = string.match(content, "%-%-%[%[.-%]%].-%-%-%[%[(.-)%]%]")
else
log.msg(log.error, "can't read from " .. script)
end
if description then
restore_log_level(old_log_level)
return description
else
restore_log_level(old_log_level)
return _("no documentation available")
end
end
local function activate(script)
local old_log_level = set_log_level(sm.log_level)
local status = nil -- status of start function
local err = nil -- error message returned if module doesn't start
log.msg(log.info, "activating " .. script.name)
if script.running == false then
script_manager_running_script = script.name
status, err = du.prequire(script.path)
log.msg(log.debug, "prequire returned " .. tostring(status) .. " and for err " .. tostring(err))
script_manager_running_script = nil
if status then
pref_write(script.script_name, "bool", true)
log.msg(log.screen, _(string.format("loaded %s", script.script_name)))
script.running = true
if err ~= true then
log.msg(log.debug, "got lib data")
script.data = err
if script.data.destroy_method and script.data.destroy_method == "hide" and script.data.show and dt.gui.current_view().id == "lighttable" then
script.data.show()
end
else
script.data = nil
end
else
log.msg(log.screen, _(string.format("%s failed to load", script.script_name)))
log.msg(log.error, "error loading " .. script.script_name)
log.msg(log.error, "error message: " .. err)
end
else -- script is a lib and loaded but hidden and the user wants to reload
script.data.restart()
script.running = true
status = true
pref_write(script.script_name, "bool", true)
end
script_manager_running_script = "script_manager"
restore_log_level(old_log_level)
return status
end
local function deactivate(script)
-- presently the lua api doesn't support unloading lib elements however, we
-- can hide libs, so we just mark those as hidden and hide the gui
-- can delete storages
-- can delete actions
-- can delete selects
-- and mark them inactive for the next time darktable starts
-- deactivate it....
local old_log_level = set_log_level(sm.log_level)
pref_write(script.script_name, "bool", false)
if script.data then
script.data.destroy()
if script.data.destroy_method then
if string.match(script.data.destroy_method, "hide") then
script.running = "hidden"
else
package.loaded[script.script_name] = nil
script.running = false
end
else
package.loaded[script.script_name] = nil
script.running = false
end
log.msg(log.info, "turned off " .. script.script_name)
log.msg(log.screen, _(string.format("%s stopped", script.name)))
else
script.running = false
log.msg(log.info, "setting " .. script.script_name .. " to not start")
log.msg(log.screen, _(string.format("%s will not start when darktable is restarted", script.name)))
end
restore_log_level(old_log_level)
end
local function add_script_name(name, path, folder)
local old_log_level = set_log_level(sm.log_level)
log.msg(log.debug, "folder is " .. folder)
log.msg(log.debug, "name is " .. name)
local script = {
name = name,
path = folder .. "/" .. path .. name,
running = false,
doc = get_script_doc(folder .. "/" .. path .. name),
metadata = get_script_metadata(folder .. "/" .. path .. name),
script_name = folder .. "/" .. name,
data = nil
}
table.insert(sm.scripts[folder], script)
if pref_read(script.script_name, "bool") then
activate(script)
else
pref_write(script.script_name, "bool", false)
end
restore_log_level(old_log_level)
end
local function process_script_data(script_file)
local old_log_level = set_log_level(sm.log_level)
-- the script file supplied is folder/filename.filetype
-- the following pattern splits the string into folder, path, name, fileename, and filetype
-- for example contrib/gimp.lua becomes
-- folder - contrib
-- path -
-- name - gimp.lua
-- filename - gimp
-- filetype - lua
-- Thanks Tobias Jakobs for the awesome regulary expression
local pattern = "(.-)/(.-)(([^\\/]-)%.?([^%.\\/]*))$"
if dt.configuration.running_os == "windows" then
-- change the path separator from / to \ for windows
pattern = "(.-)\\(.-)(([^\\]-)%.?([^%.\\]*))$"
end
log.msg(log.info, "processing " .. script_file)
-- add the script data
local folder,path,name,filename,filetype = string.match(script_file, pattern)
if folder and name and path then
log.msg(log.debug, "folder is " .. folder)
log.msg(log.debug, "name is " .. name)
add_script_folder(folder)
add_script_name(name, path, folder)
end
restore_log_level(old_log_level)
end
local function ensure_lib_in_search_path(line)
local old_log_level = set_log_level(sm.log_level)
log.msg(log.debug, "line is " .. line)
if string.match(line, ds.sanitize_lua(dt.configuration.config_dir .. PS .. "lua/lib")) then
log.msg(log.debug, line .. " is already in search path, returning...")
return
end
local pattern = dt.configuration.running_os == "windows" and "(.+)\\lib\\.+lua" or "(.+)/lib/.+lua"
local path = string.match(line, pattern)
log.msg(log.debug, "extracted path is " .. path)
log.msg(log.debug, "package.path is " .. package.path)
if not string.match(package.path, ds.sanitize_lua(path)) then
log.msg(log.debug, "path isn't in package.path, adding...")
package.path = package.path .. ";" .. path .. "/?.lua"
log.msg(log.debug, "new package.path is " .. package.path)
end
restore_log_level(old_log_level)
end
local function scan_scripts(script_dir)
local old_log_level = set_log_level(sm.log_level)
local script_count = 0
local find_cmd = "find -L " .. script_dir .. " -name \\*.lua -print | sort"
if dt.configuration.running_os == "windows" then
find_cmd = "dir /b/s \"" .. script_dir .. "\\*.lua\" | sort"
end
log.msg(log.debug, "find command is " .. find_cmd)
-- scan the scripts
local output = io.popen(find_cmd)
for line in output:lines() do
log.msg(log.debug, "line is " .. line)
local l = string.gsub(line, ds.sanitize_lua(LUA_DIR) .. PS, "") -- strip the lua dir off
local script_file = l:sub(1,-5) -- strip off .lua\n
if not string.match(script_file, "script_manager") then -- let's not include ourself
if not string.match(script_file, "plugins") then -- skip plugins
if not string.match(script_file, "lib" .. PS) then -- let's not try and run libraries
if not string.match(script_file, "%.git") then -- don't match files in the .git directory
process_script_data(script_file)
script_count = script_count + 1
end
else
ensure_lib_in_search_path(line) -- but let's make sure libraries can be found
end
end
end
end
restore_log_level(old_log_level)
return script_count
end
local function update_scripts()
local old_log_level = set_log_level(sm.log_level)
local result = false
local git = sm.executables.git
if not git then
log.msg(log.screen, _("ERROR: git not found. Install or specify the location of the git executable."))
return
end
local git_command = "cd " .. LUA_DIR .. " " .. CS .. " " .. git .. " pull"
log.msg(log.debug, "update git command is " .. git_command)
if dt.configuration.running_os == "windows" then
result = dtsys.windows_command(git_command)
else
result = os.execute(git_command)
end
if result == 0 then
log.msg(log.screen, _("lua scripts successfully updated"))
end
restore_log_level(old_log_level)
return result
end
--------------
-- UI handling
--------------
local function update_script_update_choices()
local old_log_level = set_log_level(sm.log_level)
local installs = {}
local pref_string = ""
for i, repo in ipairs(sm.installed_repositories) do
table.insert(installs, repo.name)
pref_string = pref_string .. i .. "," .. repo.name .. "," .. repo.directory .. ","
end
update_combobox_choices(sm.widgets.update_script_choices, installs, 1)
log.msg(log.debug, "repo pref string is " .. pref_string)
pref_write("installed_repos", "string", pref_string)
restore_log_level(old_log_level)
end
local function scan_repositories()
local old_log_level = set_log_level(sm.log_level)
local script_count = 0
local find_cmd = "find -L " .. LUA_DIR .. " -name \\*.git -print | sort"
if dt.configuration.running_os == "windows" then
find_cmd = "dir /b/s /a:d " .. LUA_DIR .. PS .. "*.git | sort"
end
log.msg(log.debug, "find command is " .. find_cmd)
local output = io.popen(find_cmd)
for line in output:lines() do
local l = string.gsub(line, ds.sanitize_lua(LUA_DIR) .. PS, "") -- strip the lua dir off
local folder = string.match(l, "(.-)" .. PS) -- get everything to the first /
if folder then -- if we have a folder (.git doesn't)
log.msg(log.debug, "found folder " .. folder)
if not string.match(folder, "plugins") and not string.match(folder, "%.git") then -- skip plugins
if #sm.installed_repositories == 1 then
log.msg(log.debug, "only 1 repo, adding " .. folder)
table.insert(sm.installed_repositories, {name = folder, directory = LUA_DIR .. PS .. folder})
else
log.msg(log.debug, "more than 1 repo, we have to search the repos to make sure it's not there")
local found = nil
for _, repo in ipairs(sm.installed_repositories) do
if string.match(repo.name, ds.sanitize_lua(folder)) then
log.msg(log.debug, "matched " .. repo.name)
found = true
break
end
end
if not found then
table.insert(sm.installed_repositories, {name = folder, directory = LUA_DIR .. PS .. folder})
end
end
end
end
end
update_script_update_choices()
restore_log_level(old_log_level)
end
local function install_scripts()
local old_log_level = set_log_level(sm.log_level)
local url = sm.widgets.script_url.text
local folder = sm.widgets.new_folder.text
if string.match(du.join(sm.folders, " "), ds.sanitize_lua(folder)) then
log.msg(log.screen, _(string.format("folder %s is already in use. Please specify a different folder name.", folder)))
log.msg(log.error, "folder " .. folder .. " already exists, returning...")
restore_log_level(old_log_level)
return
end
local result = false
local git = sm.executables.git
if not git then
log.msg(log.screen, _("ERROR: git not found. Install or specify the location of the git executable."))
restore_log_level(old_log_level)
return
end
local git_command = "cd " .. LUA_DIR .. " " .. CS .. " " .. git .. " clone " .. url .. " " .. folder
log.msg(log.debug, "update git command is " .. git_command)
if dt.configuration.running_os == "windows" then
result = dtsys.windows_command(git_command)
else
result = dtsys.external_command(git_command)
end
log.msg(log.info, "result from import is " .. result)
if result == 0 then
local count = scan_scripts(LUA_DIR .. PS .. folder)
if count > 0 then
update_combobox_choices(sm.widgets.folder_selector, sm.folders, sm.widgets.folder_selector.selected)
dt.print(_(string.format("scripts successfully installed into folder %s"), folder))
table.insert(sm.installed_repositories, {name = folder, directory = LUA_DIR .. PS .. folder})
update_script_update_choices()
for i = 1, #sm.widgets.folder_selector do
if string.match(sm.widgets.folder_selector[i], ds.sanitize_lua(folder)) then
log.msg(log.debug, "setting folder selector to " .. i)
sm.widgets.folder_selector.selected = i
break
end
i = i + 1
end
log.msg(log.debug, "clearing text fields")
sm.widgets.script_url.text = ""
sm.widgets.new_folder.text = ""
sm.widgets.main_menu.selected = 3
else
log.msg(log.screen, _("no scripts found to install"))
log.msg(log.error, "scan_scripts returned " .. count .. " scripts found. Not adding to folder_selector")
end
else
log.msg(log.screen, _("failed to download scripts"))
end
restore_log_level(old_log_level)
return result
end
local function clear_button(number)
local old_log_level = set_log_level(sm.log_level)
local button = sm.widgets.buttons[number]
local label = sm.widgets.labels[number]
button.image = BLANK_ICON
button.tooltip = ""
button.sensitive = false
label.label = ""
button.name = ""
restore_log_level(old_log_level)
end
local function find_script(folder, name)
local old_log_level = set_log_level(sm.log_level)
log.msg(log.debug, "looking for script " .. name .. " in folder " .. folder)
for _, script in ipairs(sm.scripts[folder]) do
if string.match(script.name, "^" .. ds.sanitize_lua(name) .. "$") then
return script
end
end
restore_log_level(old_log_level)
return nil
end
local function populate_buttons(folder, first, last)
local old_log_level = set_log_level(sm.log_level)
log.msg(log.debug, "folder is " .. folder .. " and first is " .. first .. " and last is " .. last)
local button_num = 1
for i = first, last do
local script = sm.scripts[folder][i]
local button = sm.widgets.buttons[button_num]
local label = sm.widgets.labels[button_num]
if script.running == true then
button.name = "pb_on"
else
button.name = "pb_off"
end
button.image = POWER_ICON
label.label = script.name
label.name = "pb_label"
button.ellipsize = "end"
button.sensitive = true
label.tooltip = script.metadata and script.metadata or script.doc
button.clicked_callback = function (this)
local cb_script = script
local state = nil
if cb_script then
log.msg(log.debug, "found script " .. cb_script.name .. " with path " .. cb_script.path)
if cb_script.running == true then
log.msg(log.debug, "deactivating " .. cb_script.name .. " on " .. cb_script.path)
deactivate(cb_script)
this.name = "pb_off"
else
log.msg(log.debug, "activating " .. cb_script.name .. " on " .. script.path)
local result = activate(cb_script)
if result then
this.name = "pb_on"
end
end
end
end
button_num = button_num + 1
end
if button_num <= sm.page_status.num_buttons then
for i = button_num, sm.page_status.num_buttons do
clear_button(i)
end
end
restore_log_level(old_log_level)
end
local function paginate(direction)
local old_log_level = set_log_level(sm.log_level)
local folder = sm.page_status.folder
log.msg(log.debug, "folder is " .. folder)
local num_scripts = #sm.scripts[folder]
log.msg(log.debug, "num_scripts is " .. num_scripts)
local max_pages = math.ceil(num_scripts / sm.page_status.num_buttons)
local cur_page = sm.page_status.current_page
log.msg(log.debug, "max pages is " .. max_pages)
local buttons_needed = nil
local first = nil
local last = nil
if direction == 0 then
cur_page = cur_page - 1
if cur_page < 1 then
cur_page = 1
end
elseif direction == 1 then
cur_page = cur_page + 1
if cur_page > max_pages then
cur_page = max_pages
end
else
log.msg(log.debug, "took path 2")
cur_page = 1
end
log.msg(log.debug, "cur_page is " .. cur_page .. " and max_pages is " .. max_pages)
if cur_page == max_pages and cur_page == 1 then
sm.widgets.page_forward.sensitive = false
sm.widgets.page_back.sensitive = false
elseif cur_page == max_pages then
sm.widgets.page_forward.sensitive = false
sm.widgets.page_back.sensitive = true
elseif cur_page == 1 then
sm.widgets.page_forward.sensitive = true
sm.widgets.page_back.sensitive = false
else
sm.widgets.page_forward.sensitive = true
sm.widgets.page_back.sensitive = true
end
sm.page_status.current_page = cur_page