6. Function reference

Subsections

- 6.1 Functions defined in ioncore
  - 6.1.1 WClientWin functions
  - 6.1.2 WFrame functions
  - 6.1.3 WGroup functions
  - 6.1.4 WGroupCW functions
  - 6.1.5 WGroupWS functions
  - 6.1.6 WHook functions
  - 6.1.7 WInfoWin functions
  - 6.1.8 WMPlex functions
  - 6.1.9 WMoveresMode functions
  - 6.1.10 WRegion functions
  - 6.1.11 WRootWin functions
  - 6.1.12 WScreen functions
  - 6.1.13 WTimer functions
  - 6.1.14 WWindow functions
  - 6.1.15 global functions
  - 6.1.16 gr functions
  - 6.1.17 string functions
  - 6.1.18 table functions
- 6.2 Functions defined in mod_tiling
  - 6.2.1 WSplit functions
  - 6.2.2 WSplitInner functions
  - 6.2.3 WSplitRegion functions
  - 6.2.4 WSplitSplit functions
  - 6.2.5 WTiling functions
- 6.3 Functions defined in mod_query
  - 6.3.1 WComplProxy functions
  - 6.3.2 WEdln functions
  - 6.3.3 WInput functions
- 6.4 Functions defined in mod_menu
  - 6.4.1 WMenu functions
- 6.5 Functions defined in mod_dock
  - 6.5.1 WDock functions
- 6.6 Functions defined in mod_sp
- 6.7 Functions defined in mod_statusbar
  - 6.7.1 WStatusBar functions
- 6.8 Functions defined in de
- 6.9 Hooks
- 6.10 Miscellaneous
  - 6.10.1 Size policies

#
6. Function reference

##
6.1 Functions defined in ioncore

Synopsis:
  ioncore.TR(s, ...)
Description:
  gettext+string.format

Synopsis:
  ioncore.bdoc(text, label)
Description:
  Used to enter documentation among bindings.

Synopsis:
  ioncore.chdir_for(reg, dir)
Description:
  Change default working directory for new programs started in reg.

Synopsis:
  ioncore.compile_cmd(cmd, guard)
Description:
  Compile string cmd into a bindable function. Within cmd, the variable ”_” (underscore) can be used to refer to the object that was selecting for the bound action and chosen to handle it. The variable ”_sub” refers to a ”currently active” sub-object of _, or a sub-object where the action loading to the binding being called actually occured.

  The string guard maybe set to pose limits on _sub. Currently supported guards are _sub:non-nil and _sub:WFoobar, where WFoobar is a class.

Synopsis:
  WTimer ioncore.create_timer()
Description:
  Create a new timer.

Synopsis:
  ioncore.create_ws(scr, tmpl, layout)
Description:
  Create new workspace on screen scr. The table tmpl may be used to override parts of the layout named with layout. If no layout is given, "default" is used.

Synopsis:
  ioncore.defbindings(context, bindings)
Description:
  Define bindings for context context. Here binding is a table composed of entries created with ioncore.kpress, etc.; see section for details.

Synopsis:
  ioncore.defctxmenu(ctx, ...)
Description:
  Define context menu for context ctx, tab being a table of menu entries.

Synopsis:
  ioncore.deflayout(name, tab)
Description:
  Define a new workspace layout with name name, and attach/creation parameters given in tab. The layout "empty" may not be defined.

Synopsis:
  ioncore.defmenu(name, tab)
Description:
  Define a new menu with name being the menu's name and tab being a table of menu entries. If tab.append is set, the entries are appended to previously-defined ones, if possible.

Synopsis:
  ioncore.defwinprop(list)
Description:
  Define a winprop. For more information, see section .

Synopsis:
  ioncore.exec_on(reg, cmd, merr_internal)
Description:
  Run cmd with the environment variable DISPLAY set to point to the root window of the X screen reg is on. If cmd is prefixed by a colon (:), the following command is executed in an xterm (or other terminal emulator) with the help of the ion-runinxterm script. If the command is prefixed by two colons, ion-runinxterm will ask you to press enter after the command is finished, even if it returns succesfully.

  For GUI commands, you might prefer to use mod_query.exec_on_merr(), which monitors the process's stderr and shows any output as warnings on the screen instead of in notions own output.

Synopsis:
  table ioncore.read_savefile(string basename)
Description:
  Read a savefile. This function is considered safe.

Synopsis:
  string ioncore.get_savefile(string basename)
Description:
  Get a file name to save (session) data in. The string basename should contain no path or extension components. This function is considered safe.

Synopsis:
  string ioncore.lookup_script(string file, string sp)
Description:
  Lookup script file. If try_in_dir is set, it is tried before the standard search path. This function is considered safe.

Synopsis:
  bool ioncore.write_savefile(string basename, table tab)
Description:
  Write tab in file with basename basename in the session directory. This function is considered safe.

Synopsis:
  ioncore.find_manager(obj, t)
Description:
  Find an object with type name t managing obj or one of its managers.

Synopsis:
  ioncore.get_dir_for(reg)
Description:
  Get default working directory for new programs started in reg.

Synopsis:
  ioncore.getbindings(maybe_context)
Description:
  Get a table of all bindings.

Synopsis:
  ioncore.getctxmenu(name)
Description:
  Returns a context menu defined with ioncore.defctxmenu.

Synopsis:
  ioncore.getlayout(name, all)
Description:
  Get named layout (or all of the latter parameter is set, but this is for internal use only).

Synopsis:
  ioncore.getmenu(name)
Description:
  Returns a menu defined with ioncore.defmenu.

Synopsis:
  ioncore.getwinprop(cwin)
Description:
  Find winprop table for cwin.

Synopsis:
  ioncore.goto_previous_workspace()
Description:
  Go to and return to a previously active workspace (if any).

  Note that this function is asynchronous; the region will not actually have received the focus when this function returns.

Synopsis:
  string ioncore.aboutmsg()
Description:
  Returns an about message (version, author, copyright notice). This function is considered safe.

Synopsis:
  WRegion ioncore.activity_first()
Description:
  Return first regio non activity list. This function is considered safe.

Synopsis:
  bool ioncore.activity_i(function iterfn)
Description:
  Iterate over activity list until iterfn returns false. The function itself returns true if it reaches the end of list without this happening. This function is considered safe.

Synopsis:
  bool ioncore.clientwin_i(function fn)
Description:
  Iterate over client windows until iterfn returns false. The function itself returns true if it reaches the end of list without this happening. This function is considered safe.

Synopsis:
  WRegion ioncore.current()
Description:
  Returns the currently focused region, if any.

Synopsis:
  bool ioncore.defshortening(string rx, string rule, bool always)
Description:
  Add a rule describing how too long titles should be shortened to fit in tabs. The regular expression rx (POSIX, not Lua!) is used to match titles and when rx matches, rule is attempted to use as a replacement for title. If always is set, the rule is used even if no shortening is necessary.

  Similarly to sed's 's' command, rule may contain characters that are inserted in the resulting string and specials as follows:

  Special | Description
  $0 | Place the original string here.
  $1 to $9 | Insert n:th capture here (as usual,captures are surrounded by parentheses in the regex).
  $| | Alternative shortening separator. The shortening described before the first this kind of separator is tried first and if it fails to make the string short enough, the next is tried, and so on.
  $< | Remove characters on the left of this marker to shorten the string.
  $> | Remove characters on the right of this marker to shorten the string. Only the first $< or $> within an alternative shortening is used.

Synopsis:
  bool ioncore.detach(WRegion reg, string how)
Description:
  Detach or reattach reg, depending on whether how is 'set'/'unset'/'toggle'. (Detaching means making reg managed by its nearest ancestor WGroup, framed if reg is not itself WFrame. Reattaching means making it managed where it used to be managed, if a return-placeholder exists.) If reg is the 'bottom' of some group, the whole group is detached. If reg is a WWindow, it is put into a frame.

Synopsis:
  integer ioncore.exec(string cmd)
Description:
  Run cmd with the environment variable DISPLAY set to point to the X display the WM is running on. No specific screen is set unlike with WRootWin.exec_on. The PID of the (shell executing the) new process is returned. This function is considered safe.

Synopsis:
  WScreen ioncore.find_screen_id(integer id)
Description:
  Find the screen with numerical id id. This function is considered safe.

Synopsis:
  bool ioncore.focushistory_i(function iterfn)
Description:
  Iterate over focus history until iterfn returns false. The function itself returns true if it reaches the end of list without this happening.

Synopsis:
  table ioncore.get()
Description:
  Get ioncore basic settings. For details see ioncore.set. This function is considered safe.

Synopsis:
  table ioncore.get_paths(table tab)
Description:
  Get important directories (userdir, sessiondir, searchpath). This function is considered safe.

Synopsis:
  bool ioncore.goto_activity()
Description:
  Go to first region on activity list.

Synopsis:
  WRegion ioncore.goto_first(WRegion reg, string dirstr, table param)
Description:
  Go to first region within reg in direction dirstr (up/down/left/right/beg/end/any). For information on param, see ioncore.navi_next. Additionally this function supports the boolean nofront field, for not bringing the object to front.

Synopsis:
  WRegion ioncore.goto_next(WRegion reg, string dirstr, table param)
Description:
  Go to region next from reg in direction dirstr (up/down/left/right/next/prev/any). For information on param, see ioncore.navi_next. Additionally this function supports the boolean nofront field, for not bringing the object to front.

Synopsis:
  WScreen ioncore.goto_next_screen()
Description:
  Switch focus to the next screen and return it.

  Note that this function is asynchronous; the screen will not actually have received the focus when this function returns.

Synopsis:
  WScreen ioncore.goto_nth_screen(integer id)
Description:
  Switch focus to the screen with id id and return it.

  Note that this function is asynchronous; the screen will not actually have received the focus when this function returns.

Synopsis:
  WScreen ioncore.goto_prev_screen()
Description:
  Switch focus to the previous screen and return it.

  Note that this function is asynchronous; the screen will not actually have received the focus when this function returns.

Synopsis:
  WRegion ioncore.goto_previous()
Description:
  Go to and return to a previously active region (if any).

  Note that this function is asynchronous; the region will not actually have received the focus when this function returns.

Synopsis:
  bool ioncore.is_i18n()
Description:
  Is Notion supporting locale-specifically multibyte-encoded strings? This function is considered safe.

Synopsis:
  bool ioncore.load_module(string modname)
Description:
  Attempt to load a C-side module.

Synopsis:
  WClientWin ioncore.lookup_clientwin(string name)
Description:
  Attempt to find a client window with name name. This function is considered safe.

Synopsis:
  WRegion ioncore.lookup_region(string name, string typenam)
Description:
  Attempt to find a non-client window region with name name and type inheriting typenam. This function is considered safe.

Synopsis:
  WRegion ioncore.navi_first(WRegion reg, string dirstr, table param)
Description:
  Find first region within reg in direction dirstr (up/down/left/right/beg/end/any). For information on param, see ioncore.navi_next.

Synopsis:
  WRegion ioncore.navi_next(WRegion reg, string dirstr, table param)
Description:
  Find region next from reg in direction dirstr (up/down/left/right/next/prev/any). The table param may contain the boolean field nowrap, instructing not to wrap around, and the WRegions no_ascend and no_descend, and boolean functions ascend_filter and descend_filter on WRegion pairs (to, from), are used to decide when to descend or ascend into another region.

Synopsis:
  integer ioncore.popen_bgread(string cmd, function h, function errh)
Description:
  Run cmd with a read pipe connected to its stdout. When data is received through the pipe, handler is called with that data. This function is considered safe.

Synopsis:
  void ioncore.profiling_start(string filename)
Description:
  Start profiling (if enabled at compile-time) This function is considered safe.

Synopsis:
  void ioncore.profiling_stop()
Description:
  Stop profiling (if enabled at compile-time) This function is considered safe.

Synopsis:
  string ioncore.progname()
Description:
  Returns the name of program using Ioncore. This function is considered safe.

Synopsis:
  bool ioncore.region_i(function fn, string typenam)
Description:
  Iterate over all non-client window regions with (inherited) class typenam until iterfn returns false. The function itself returns true if it reaches the end of list without this happening. This function is considered safe.

Synopsis:
  void ioncore.request_selection(function fn)
Description:
  Request (string) selection. The function fn will be called with the selection when and if it is received.

Synopsis:
  void ioncore.resign()
Description:
  Causes the window manager to simply exit without saving state/session.

Synopsis:
  void ioncore.restart()
Description:
  Restart, saving session first.

Synopsis:
  void ioncore.restart_other(string cmd)
Description:
  Attempt to restart another window manager cmd.

Synopsis:
  WRootWin ioncore.rootwin()
Description:
  Returns the first WRootWin This function is considered safe.

Synopsis:
  void ioncore.screens_updated(WRootWin rw)
Description:
  refresh _NET_WM_VIRTUAL_ROOTS This function is considered safe.

Synopsis:
  void ioncore.set(table tab)
Description:
  Set ioncore basic settings. The table tab may contain the following fields.

  Field | Description
  opaque_resize | (boolean) Controls whether interactive move and resize operations simply draw a rubberband during the operation (false) or immediately affect the object in question at every step (true).
  warp | (boolean) Should focusing operations move the pointer to the object to be focused?
  warp_margin | (integer) Border offset in pixels to apply to the cursor when warping.
  warp_factor | (double[2]) X and Y factor to offset the cursor. between 0 and 1, where 0.5 is the center.
  switchto | (boolean) Should a managing WMPlex switch to a newly mapped client window?
  screen_notify | (boolean) Should notification tooltips be displayed for hidden workspaces with activity?
  frame_default_index | (string) Specifies where to add new regions on the mutually exclusive list of a frame. One of ”last”, ”next” (for after current), ”next-act” (for after current and anything with activity right after it).
  dblclick_delay | (integer) Delay between clicks of a double click.
  kbresize_delay | (integer) Delay in milliseconds for ending keyboard resize mode after inactivity.
  kbresize_t_max | (integer) Controls keyboard resize acceleration. See description below for details.
  kbresize_t_min | (integer) See below.
  kbresize_step | (floating point) See below.
  kbresize_maxacc | (floating point) See below.
  framed_transients | (boolean) Put transients in nested frames.
  float_placement_method | (string) How to place floating frames. One of ”udlr” (up-down, then left-right), ”lrud” (left-right, then up-down) or ”random”.
  unsqueeze | (boolean) Auto-unsqueeze transients/menus/queries/etc.
  window_dialog_float | (boolean) Float dialog type windows.
  autoraise | (boolean) Autoraise regions in groups on goto.
  autosave_layout | (boolean) Automatically save layout on restart and exit.
  window_stacking_request | (string) How to respond to window-stacking requests. `ignore' to do nothing, `activate' to set the activity flag on a window requesting to be stacked Above.
  focuslist_insert_delay | (integer) Time (in ms) that a window must stay focused in order to be added to the focus list. If this value is set <=0, this logic is disabled: the focus list is updated immediately
  activity_notification_on_all_screens | (boolean) If enabled, activity notifiers are displayed on ALL the screens, not just the screen that contains the window producing the notification. This is only relevant on multi-head setups. By default this is disabled
  workspace_indicator_timeout | (integer) If enabled, a workspace indicator comes up at the bottom-left of the screen when a new workspace is selected. This indicator stays active for only as long as indicated by this variable (in ms). Timeout values <=0 disable the indicator altogether. This is disabled by default

  When a keyboard resize function is called, and at most kbresize_t_max milliseconds has passed from a previous call, acceleration factor is reset to 1.0. Otherwise, if at least kbresize_t_min milliseconds have passed from the from previous acceleration update or reset the squere root of the acceleration factor is incremented by kbresize_step. The maximum acceleration factor (pixels/call modulo size hints) is given by kbresize_maxacc. The default values are (200, 50, 30, 100).

Synopsis:
  bool ioncore.set_paths(table tab)
Description:
  Set important directories (sessiondir, searchpath).

Synopsis:
  void ioncore.set_selection(string p)
Description:
  Set primary selection and cutbuffer0 to p.

Synopsis:
  void ioncore.shutdown()
Description:
  End session saving it first.

Synopsis:
  void ioncore.snapshot()
Description:
  Save session.

Synopsis:
  void ioncore.tagged_clear()
Description:
  Untag all regions.

Synopsis:
  WRegion ioncore.tagged_first(bool untag)
Description:
  Returns first tagged object, untagging it as well if untagis set. This function is considered safe.

Synopsis:
  bool ioncore.tagged_i(function iterfn)
Description:
  Iterate over tagged regions until iterfn returns false. The function itself returns true if it reaches the end of list without this happening. This function is considered safe.

Synopsis:
  string ioncore.tempdir()
Description:
  Returns the global temporary directory for this notion instance with a trailing slash. The directory is created in case it does not exist. The directory will be non-recursively deleted on teardown, therefore no subdirectories should be created. This function is considered safe.

Synopsis:
  void ioncore.unsqueeze(WRegion reg, bool override)
Description:
  Try to detach reg if it fits poorly in its current location. This function does not do anything, unless override is set or the unsqueeze option of ioncore.set is set.

Synopsis:
  void ioncore.update_net_state(WClientWin cwin)
Description:
  refresh _NET_WM_STATE markers for this window This function is considered safe.

Synopsis:
  string ioncore.version()
Description:
  Returns Ioncore version string. This function is considered safe.

Synopsis:
  void ioncore.warn(string str)
Description:
  Issue a warning. How the message is displayed depends on the current warning handler. This function is considered safe.

Synopsis:
  void ioncore.warn_traced(string str)
Description:
  Similar to ioncore.warn, but also print Lua stack trace. This function is considered safe.

Synopsis:
  void ioncore.x_change_property(integer win, integer atom, integer atom_type, integer format, string mode, table tab)
Description:
  Modify a window property. The mode is one of "replace", "prepend" or "append", and format is either 8, 16 or 32. Also see ioncore.x_get_window_property and the XChangeProperty(3) manual page.

Synopsis:
  void ioncore.x_delete_property(integer win, integer atom)
Description:
  Delete a window property.

Synopsis:
  string ioncore.x_get_atom_name(integer atom)
Description:
  Get the name of an atom. See XGetAtomName(3) manual page for details.

Synopsis:
  table ioncore.x_get_text_property(integer win, integer atom)
Description:
  Get a text property for a window (STRING, COMPOUND_TEXT, or UTF8_STRING property converted). The fields in the returned table (starting from 1) are the null-separated parts of the property. See the XGetTextProperty(3) manual page for more information. This function is considered safe.

Synopsis:
  table ioncore.x_get_window_property(integer win, integer atom, integer atom_type, integer n32expected, bool more)
Description:
  Get a property atom of type atom_type for window win. The n32expected parameter indicates the expected number of 32bit words, and more indicates whether all or just this amount of data should be fetched. Each 8, 16 or 32bit element of the property, as deciphered from atom_type is a field in the returned table. See XGetWindowProperty(3) manual page for more information. This function is considered safe.

Synopsis:
  integer ioncore.x_intern_atom(string name, bool only_if_exists)
Description:
  Create a new atom. See XInternAtom(3) manual page for details.

Synopsis:
  void ioncore.x_set_text_property(integer win, integer atom, table tab)
Description:
  Set a text property for a window. The fields of tab starting from 1 should be the different null-separated parts of the property. See the XSetTextProperty(3) manual page for more information.

Synopsis:
  void ioncore.x_set_utf8_property(integer win, integer atom, table tab)
Description:
  Set a UTF8_STRING property for a window. The fields of tab starting from 1 should be the different null-separated parts of the property. See the XSetTextProperty(3) manual page for more information.

Synopsis:
  ioncore.kpress(keyspec, cmd, guard)
Description:
  Creates a binding description table for the action of pressing a key given by keyspec (with possible modifiers) to the function func. For more information on bindings, see section .

Synopsis:
  ioncore.kpress_wait(keyspec, cmd, guard)
Description:
  This is similar to kpress but after calling cmd, Ioncore waits for all modifiers to be released before processing any further actions. For more information on bindings, see section .

Synopsis:
  bool ioncore.defer(function fn)
Description:
  Defer execution of fn until the main loop. This function is considered safe.

Synopsis:
  WHook ioncore.get_hook(string name)
Description:
  Find named hook name. This function is considered safe.

Synopsis:
  ioncore.match_winprop_dflt(prop, cwin, id)
Description:
  The basic name-based winprop matching criteria.

Synopsis:
  ioncore.mclick(buttonspec, cmd, guard)
Description:
  Creates a binding description table for the action of clicking a mouse button while possible modifier keys are pressed, both given by buttonspec, to the function func. For more information, see section .

Synopsis:
  ioncore.mdblclick(buttonspec, cmd, guard)
Description:
  Similar to mclick but for double-click. Also see section .

Synopsis:
  ioncore.mdrag(buttonspec, cmd, guard)
Description:
  Creates a binding description table for the action of moving the mouse (or other pointing device) while the button given by buttonspec is held pressed and the modifiers given by buttonspec were pressed when the button was initially pressed. Also see section .

Synopsis:
  ioncore.menuentry(name, cmd, guard_or_opts)
Description:
  Use this function to define normal menu entries. The string name is the string shown in the visual representation of menu. The parameter cmd and guard_or_opts (when string) are similar to those of ioncore.defbindings. If guard_or_opts is a table, it may contains the guard field, and the priority field, for controlling positioning of entries in context menus. (The default priority is 1 for most entries, and -1 for auto-generated submenus.)

Synopsis:
  ioncore.mpress(buttonspec, cmd, guard)
Description:
  Similar to mclick but for just pressing the mouse button. Also see section .

Synopsis:
  ioncore.refresh_stylelist()
Description:
  Refresh list of known style files.

Synopsis:
  ioncore.submap(kcb_, list)
Description:
  Returns a function that creates a submap binding description table. When the key press action keyspec occurs, Ioncore will wait for a further key presse and act according to the submap. For details, see section .

Synopsis:
  ioncore.submenu(name, sub_or_name, options)
Description:
  Use this function to define menu entries for submenus. The parameter sub_or_name is either a table of menu entries or the name of an already defined menu. The initial menu entry to highlight can be specified by options.initial as either an integer starting from 1, or a function that returns such a number. Another option supported is options.noautoexpand that will cause mod_query.query_menu to not automatically expand this submenu.

Synopsis:
  ioncore.tagged_attach(reg, param)
Description:
  Attach tagged regions to reg. The method of attach depends on the types of attached regions and whether reg implements attach_framed and attach. If param is not set, the default of `{switchto=true}` is used.

### 6.1.1 WClientWin functions

Synopsis:
  table WClientWin.get_ident(WClientWin cwin)
Description:
  Returns a table containing the properties WM_CLASS (table entries instance and class) and WM_WINDOW_ROLE (role) properties for cwin. If a property is not set, the corresponding field(s) are unset in the table. This function is considered safe.

Synopsis:
  void WClientWin.kill(WClientWin cwin)
Description:
  Attempt to kill (with XKillWindow) the client that owns the X window correspoding to cwin.

Synopsis:
  void WClientWin.nudge(WClientWin cwin)
Description:
  Attempts to fix window size problems with non-ICCCM compliant programs.

Synopsis:
  void WClientWin.quote_next(WClientWin cwin)
Description:
  Send next key press directly to cwin.

Synopsis:
  double WClientWin.xid(WClientWin cwin)
Description:
  Return the X window id for the client window. This function is considered safe.

### 6.1.2 WFrame functions

Synopsis:
  bool WFrame.is_shaded(WFrame frame)
Description:
  Is frame shaded? This function is considered safe.

Synopsis:
  void WFrame.maximize_horiz(WFrame frame)
Description:
  Attempt to toggle horizontal maximisation of frame.

Synopsis:
  void WFrame.maximize_vert(WFrame frame)
Description:
  Attempt to toggle vertical maximisation of frame.

Synopsis:
  string WFrame.mode(WFrame frame)
Description:
  Get frame mode. This function is considered safe.

Synopsis:
  void WFrame.p_switch_tab(WFrame frame)
Description:
  Display the region corresponding to the tab that the user pressed on. This function should only be used by binding it to a mouse action.

Synopsis:
  void WFrame.p_tabdrag(WFrame frame)
Description:
  Start dragging the tab that the user pressed on with the pointing device. This function should only be used by binding it to mpress or mdrag action with area ”tab”.

Synopsis:
  bool WFrame.set_grattr(WFrame frame, string attr, string how)
Description:
  Set (unset/toggle) extra drawing engine attributes for the frame.

Synopsis:
  bool WFrame.set_mode(WFrame frame, string modestr)
Description:
  Set frame mode.

Synopsis:
  bool WFrame.set_numbers(WFrame frame, string how)
Description:
  Control whether tabs show numbers (set/unset/toggle). When showing numbers 'during_grab', the numbers are shown until the next keyboard event comes in. The resulting state is returned, which may not be what was requested.

Synopsis:
  bool WFrame.set_shaded(WFrame frame, string how)
Description:
  Set shading state according to the parameter how (set/unset/toggle). Resulting state is returned, which may not be what was requested.

### 6.1.3 WGroup functions

Synopsis:
  WRegion WGroup.attach(WGroup ws, WRegion reg, table param)
Description:
  Attach and reparent existing region reg to ws. The table param may contain the fields index and switchto that are interpreted as for WMPlex.attach_new.

Synopsis:
  WRegion WGroup.attach_new(WGroup ws, table param)
Description:
  Create a new region to be managed by ws. At least the following fields in param are understood:

  Field | Description
  type | (string) Class of the object to be created. Mandatory.
  name | (string) Name of the object to be created.
  switchto | (boolean) Should the region be switched to?
  level | (integer) Stacking level; default is 1.
  modal | (boolean) Make object modal; ignored if level is set.
  sizepolicy | (string) Size policy; see Section .

  In addition parameters to the region to be created are passed in this same table.

Synopsis:
  WRegion WGroup.bottom(WGroup ws)
Description:
  Returns the 'bottom' of ws. This function is considered safe.

Synopsis:
  bool WGroup.is_fullscreen(WGroup grp)
Description:
  Is reg in full screen mode? This function is considered safe.

Synopsis:
  bool WGroup.managed_i(WGroup ws, function iterfn)
Description:
  Iterate over managed regions of ws until iterfn returns false. The function itself returns true if it reaches the end of list without this happening. This function is considered safe.

Synopsis:
  bool WGroup.set_bottom(WGroup ws, WRegion reg)
Description:
  Sets the 'bottom' of ws. The region reg must already be managed by ws, unless nil.

Synopsis:
  bool WGroup.set_fullscreen(WGroup grp, string how)
Description:
  Set client window reg full screen state according to the parameter how (set/unset/toggle). Resulting state is returned, which may not be what was requested.

### 6.1.4 WGroupCW functions

### 6.1.5 WGroupWS functions

Synopsis:
  bool WGroupWS.attach_framed(WGroupWS ws, WRegion reg, table t)
Description:
  Attach region reg on ws. At least the following fields in t are supported:

  Field | Description
  switchto | Should the region be switched to (boolean)? Optional.
  geom | Geometry; x and y, if set, indicates top-left of the frame to be created while width and height, if set, indicate the size of the client window within that frame. Optional.

### 6.1.6 WHook functions

Synopsis:
  bool WHook.add(WHook hk, function efn)
Description:
  Add efn to the list of functions to be called when the hook hk is triggered.

Synopsis:
  bool WHook.listed(WHook hk, function efn)
Description:
  Is fn hooked to hook hk? This function is considered safe.

Synopsis:
  bool WHook.remove(WHook hk, function efn)
Description:
  Remove efn from the list of functions to be called when the hook hk is triggered.

### 6.1.7 WInfoWin functions

Synopsis:
  void WInfoWin.set_text(WInfoWin p, string str, integer maxw)
Description:
  Set contents of the info window.

### 6.1.8 WMPlex functions

Synopsis:
  WRegion WMPlex.attach(WMPlex mplex, WRegion reg, table param)
Description:
  Attach and reparent existing region reg to mplex. The table param may contain the fields index and switchto that are interpreted as for WMPlex.attach_new.

Synopsis:
  WRegion WMPlex.attach_new(WMPlex mplex, table param)
Description:
  Create a new region to be managed by mplex. At least the following fields in param are understood (all but type are optional).

  Field | Description
  type | (string) Class name (a string) of the object to be created.
  name | (string) Name of the object to be created (a string).
  switchto | (boolean) Should the region be switched to (boolean)?
  unnumbered | (boolean) Do not put on the numbered mutually exclusive list.
  index | (integer) Index on this list, same as for WMPlex.set_index.
  level | (integer) Stacking level.
  modal | (boolean) Shortcut for modal stacking level.
  hidden | (boolean) Attach hidden, if not prevented by e.g. the mutually exclusive list being empty. This option overrides switchto.
  sizepolicy | (string) Size policy; see Section .
  geom | (table) Geometry specification.

  In addition parameters to the region to be created are passed in this same table.

Synopsis:
  void WMPlex.dec_index(WMPlex mplex, WRegion r)
Description:
  Move r ”right” within objects managed by mplex on list 1.

Synopsis:
  integer WMPlex.get_index(WMPlex mplex, WRegion reg)
Description:
  Get index of reg on the mutually exclusive list of mplex. The indices begin from zero.. If reg is not on the list, -1 is returned. This function is considered safe.

Synopsis:
  table WMPlex.get_stdisp(WMPlex mplex)
Description:
  Get status display information. See WMPlex.get_stdisp for information on the fields. This function is considered safe.

Synopsis:
  void WMPlex.inc_index(WMPlex mplex, WRegion r)
Description:
  Move r ”right” within objects managed by mplex on list 1.

Synopsis:
  bool WMPlex.is_hidden(WMPlex mplex, WRegion reg)
Description:
  Is reg on within mplex and hidden? This function is considered safe.

Synopsis:
  bool WMPlex.managed_i(WMPlex mplex, function iterfn)
Description:
  Iterate over managed regions of mplex until iterfn returns false. The function itself returns true if it reaches the end of list without this happening. This function is considered safe.

Synopsis:
  integer WMPlex.mx_count(WMPlex mplex)
Description:
  Returns the number of objects on the mutually exclusive list of mplex. This function is considered safe.

Synopsis:
  WRegion WMPlex.mx_current(WMPlex mplex)
Description:
  Returns the managed object currently active within the mutually exclusive list of mplex. This function is considered safe.

Synopsis:
  bool WMPlex.mx_i(WMPlex mplex, function iterfn)
Description:
  Iterate over numbered/mutually exclusive region list of mplex until iterfn returns false. The function itself returns true if it reaches the end of list without this happening. This function is considered safe.

Synopsis:
  WRegion WMPlex.mx_nth(WMPlex mplex, integer n)
Description:
  Returns the n:th object managed by mplex on the l:th layer. This function is considered safe.

Synopsis:
  bool WMPlex.set_hidden(WMPlex mplex, WRegion reg, string how)
Description:
  Set the visibility of the region reg on mplex as specified with the parameter how (set/unset/toggle). The resulting state is returned.

Synopsis:
  void WMPlex.set_index(WMPlex mplex, WRegion reg, integer index)
Description:
  Set index of reg to index within the mutually exclusive list of mplex. Special values for index are:

  -1 | Last.
  -2 | After WMPlex.mx_current.

Synopsis:
  WRegion WMPlex.set_stdisp(WMPlex mplex, table t)
Description:
  Set/create status display for mplex. Table is a standard description of the object to be created (as passed to e.g. WMPlex.attach_new). In addition, the following fields are recognised:

  Field | Description
  pos | The corner of the screen to place the status display in. One of tl, tr, bl or br.
  action | If this field is set to keep, corner and orientation are changed for the existing status display. If this field is set to remove, the existing status display is removed. If this field is not set or is set to replace, a new status display is created and the old, if any, removed.

Synopsis:
  void WMPlex.switch_next(WMPlex mplex)
Description:
  Have mplex display next (wrt. currently selected) object managed by it.

Synopsis:
  void WMPlex.switch_nth(WMPlex mplex, integer n)
Description:
  Have mplex display the n:th object managed by it.

Synopsis:
  void WMPlex.switch_prev(WMPlex mplex)
Description:
  Have mplex display previous (wrt. currently selected) object managed by it.

Synopsis:
  void WMPlex.switch_to(WMPlex mplex, WRegion reg)
Description:
  Have mplex display the given child window already added to the mplex

### 6.1.9 WMoveresMode functions

Synopsis:
  void WMoveresMode.cancel(WMoveresMode mode)
Description:
  Return from move/resize cancelling changes if opaque move/resize has not been enabled.

Synopsis:
  void WMoveresMode.finish(WMoveresMode mode)
Description:
  Return from move/resize mode and apply changes unless opaque move/resize is enabled.

Synopsis:
  table WMoveresMode.geom(WMoveresMode mode)
Description:
  Returns current geometry.

Synopsis:
  void WMoveresMode.move(WMoveresMode mode, integer horizmul, integer vertmul)
Description:
  Move resize mode target one step:

  horizmul/vertmul | effect
  -1 | Move left/up
  0 | No effect
  1 | Move right/down

Synopsis:
  void WMoveresMode.resize(WMoveresMode mode, integer left, integer right, integer top, integer bottom)
Description:
  Shrink or grow resize mode target one step in each direction. Acceptable values for the parameters left, right, top and bottom are as follows: -1: shrink along, 0: do not change, 1: grow along corresponding border.

Synopsis:
  table WMoveresMode.rqgeom(WMoveresMode mode, table g)
Description:
  Request exact geometry in move/resize mode. For details on parameters, see WRegion.rqgeom.

### 6.1.10 WRegion functions

Synopsis:
  WMoveresMode WRegion.begin_kbresize(WRegion reg)
Description:
  Enter move/resize mode for reg. The bindings set with ioncore.set_bindings for WMoveresMode are used in this mode. Of the functions exported by the Ion C core, only WMoveresMode.resize, WMoveresMode.move, WMoveresMode.cancel and WMoveresMode.end are allowed to be called while in this mode.

Synopsis:
  WRegion WRegion.current(WRegion mgr)
Description:
  Return the object, if any, that is considered ”currently active” within the objects managed by mplex. This function is considered safe.

Synopsis:
  table WRegion.geom(WRegion reg)
Description:
  Returns the geometry of reg within its parent; a table with fields x, y, w and h. This function is considered safe.

Synopsis:
  table WRegion.get_configuration(WRegion reg, bool clientwins)
Description:
  Get configuration tree. If clientwins is unset, client windows are filtered out.

Synopsis:
  bool WRegion.goto(WRegion reg)
Description:
  Deprecated in favour of WRegion.goto_focus because 'goto' is a keyword since Lua 5.2.

Synopsis:
  bool WRegion.goto_focus(WRegion reg)
Description:
  Attempt to display reg, save region activity status and then warp to (or simply set focus to if warping is disabled) reg.

  Note that this function is asynchronous; the region will not actually have received the focus when this function returns.

Synopsis:
  WRegion WRegion.groupleader_of(WRegion reg)
Description:
  Returns the group of reg, if reg is its bottom, and reg itself otherwise.

Synopsis:
  bool WRegion.is_active(WRegion reg)
Description:
  Is reg active/does it or one of it's children of focus? This function is considered safe.

Synopsis:
  bool WRegion.is_activity(WRegion reg)
Description:
  Is activity notification set on reg. This function is considered safe.

Synopsis:
  bool WRegion.is_mapped(WRegion reg)
Description:
  Is reg visible/is it and all it's ancestors mapped? This function is considered safe.

Synopsis:
  bool WRegion.is_tagged(WRegion reg)
Description:
  Is reg tagged? This function is considered safe.

Synopsis:
  WRegion WRegion.manager(WRegion reg)
Description:
  Returns the region that manages reg. This function is considered safe.

Synopsis:
  string WRegion.name(WRegion reg)
Description:
  Returns the name for reg. This function is considered safe.

Synopsis:
  WWindow WRegion.parent(WRegion reg)
Description:
  Returns the parent region of reg. This function is considered safe.

Synopsis:
  WRootWin WRegion.rootwin_of(WRegion reg)
Description:
  Returns the root window reg is on. This function is considered safe.

Synopsis:
  void WRegion.rqclose(WRegion reg, bool relocate)
Description:
  Attempt to close/destroy reg. Whether this operation works depends on whether the particular type of region in question has implemented the feature and, in case of client windows, whether the client supports the WM_DELETE protocol (see also WClientWin.kill). The region will not be destroyed when this function returns. To find out if and when it is destroyed, use the "deinit" notification. If relocate is not set, and reg manages other regions, it will not be closed. Otherwise the managed regions will be attempted to be relocated.

Synopsis:
  WRegion WRegion.rqclose_propagate(WRegion reg, WRegion maybe_sub)
Description:
  Recursively attempt to close a region or one of the regions managed by it. If sub is set, it will be used as the managed region, otherwise WRegion.current(reg). The object to be closed is returned, or NULL if nothing can be closed. For further details, see notes for WRegion.rqclose.

Synopsis:
  table WRegion.rqgeom(WRegion reg, table g)
Description:
  Attempt to resize and/or move reg. The table g is a usual geometry specification (fields x, y, w and h), but may contain missing fields, in which case, reg's manager may attempt to leave that attribute unchanged.

Synopsis:
  bool WRegion.rqorder(WRegion reg, string ord)
Description:
  Request ordering. Currently supported values for ord are 'front' and 'back'.

Synopsis:
  WScreen WRegion.screen_of(WRegion reg)
Description:
  Returns the screen reg is on. This function is considered safe.

Synopsis:
  bool WRegion.set_activity(WRegion reg, string how)
Description:
  Set activity flag of reg. The how parameter most be one of (set/unset/toggle).

Synopsis:
  bool WRegion.set_name(WRegion reg, string p)
Description:
  Set the name of reg to p. If the name is already in use, an instance number suffix <n> will be attempted. If p has such a suffix, it will be modified, otherwise such a suffix will be added. Setting p to nil will cause current name to be removed.

Synopsis:
  bool WRegion.set_name_exact(WRegion reg, string p)
Description:
  Similar to WRegion.set_name except if the name is already in use, other instance numbers will not be attempted. The string p should not contain a <n> suffix or this function will fail.

Synopsis:
  bool WRegion.set_tagged(WRegion reg, string how)
Description:
  Change tagging state of reg as defined by how (set/unset/toggle). Resulting state is returned.

Synopsis:
  table WRegion.size_hints(WRegion reg)
Description:
  Returns size hints for reg. The returned table always contains the fields min_?, base_? and sometimes the fields max_?, base_? and inc_?, where ?=w, h. This function is considered safe.

### 6.1.11 WRootWin functions

Synopsis:
  WScreen WRootWin.current_scr(WRootWin rootwin)
Description:
  Returns the most recently active screen on root window rootwin. This function is considered safe.

Synopsis:
  void WRootWin.warp_pointer(WRootWin root, integer x, integer y)
Description:
  Warp the cursor pointer to this location

  I'm not *entirely* sure what 'safe' means, but this doesn't change internal notion state, so I guess it's 'safe'... This function is considered safe.

### 6.1.12 WScreen functions

Synopsis:
  integer WScreen.id(WScreen scr)
Description:
  Return the numerical id for screen scr. This function is considered safe.

Synopsis:
  bool WScreen.set_managed_offset(WScreen scr, table offset)
Description:
  Set offset of objects managed by the screen from actual screen geometry. The table offset should contain the entries x, y, w and h indicating offsets of that component of screen geometry.

### 6.1.13 WTimer functions

Synopsis:
  bool WTimer.is_set(WTimer timer)
Description:
  Is timer set?

Synopsis:
  void WTimer.reset(WTimer timer)
Description:
  Reset timer.

Synopsis:
  void WTimer.set(WTimer timer, integer msecs, function fn)
Description:
  Set timer to call fn in msecs milliseconds.

### 6.1.14 WWindow functions

Synopsis:
  void WWindow.p_move(WWindow wwin)
Description:
  Start moving wwin with the mouse or other pointing device. This function should only be used by binding it to mpress or mdrag action.

Synopsis:
  void WWindow.p_resize(WWindow wwin)
Description:
  Start resizing wwin with the mouse or other pointing device. This function should only be used by binding it to mpress or mdrag action.

Synopsis:
  double WWindow.xid(WWindow wwin)
Description:
  Return the X window id for wwin. This function is considered safe.

### 6.1.15 global functions

Synopsis:
  export(lib, ...)
Description:
  Export a list of functions from lib into global namespace.

### 6.1.16 gr functions

Synopsis:
  void gr.read_config()
Description:
  Read drawing engine configuration file look.lua, select 'de' engine if none is selected yet.

Synopsis:
  void gr.refresh()
Description:
  Refresh objects' brushes to update them to use newly loaded style.

Synopsis:
  bool gr.select_engine(string engine)
Description:
  Future requests for ”brushes” are to be forwarded to the drawing engine engine. If no engine of such name is known, a module with that name is attempted to be loaded. This function is only intended to be called from colour scheme etc. configuration files and can not be used to change the look of existing objects; for that use gr.read_config.

### 6.1.17 string functions

Synopsis:
  string.shell_safe(str)
Description:
  Make str shell-safe.

### 6.1.18 table functions

Synopsis:
  table.append(t1, t2)
Description:
  Add entries that do not exist in t1 from t2 to t1.

Synopsis:
  table.copy(t, deep)
Description:
  Make copy of table. If deep is unset, shallow one-level copy is made, otherwise a deep copy is made.

Synopsis:
  table.icat(t1, t2)
Description:
  Insert all positive integer entries from t2 into t1.

Synopsis:
  table.join(t1, t2)
Description:
  Create a table containing all entries from t1 and those from t2 that are missing from t1.

Synopsis:
  table.map(f, t)
Description:
  Map all entries of t by f.

##
6.2 Functions defined in mod_tiling

Synopsis:
  table mod_tiling.get()
Description:
  Get parameters. For details see mod_tiling.set. This function is considered safe.

Synopsis:
  bool mod_tiling.mkbottom(WRegion reg)
Description:
  Create a new WTiling 'bottom' for the group of reg, consisting of reg.

Synopsis:
  void mod_tiling.set(table tab)
Description:
  Set parameters. Currently only raise_delay (in milliseconds) is supported.

Synopsis:
  bool mod_tiling.untile(WTiling tiling)
Description:
  If tiling is managed by some group, float the frames in the tiling in that group, and dispose of tiling.

### 6.2.1 WSplit functions

Synopsis:
  table WSplit.geom(WSplit split)
Description:
  Returns the area of workspace used by the regions under split. This function is considered safe.

Synopsis:
  WSplitInner WSplit.parent(WSplit split)
Description:
  Return parent split for split. This function is considered safe.

Synopsis:
  table WSplit.rqgeom(WSplit node, table g)
Description:
  Attempt to resize and/or move the split tree starting at node. Behaviour and the g parameter are as for WRegion.rqgeom operating on node (if it were a WRegion).

Synopsis:
  void WSplit.transpose(WSplit node)
Description:
  Transpose contents of node.

### 6.2.2 WSplitInner functions

Synopsis:
  WSplit WSplitInner.current(WSplitInner node)
Description:
  Returns the most previously active child node of split. This function is considered safe.

### 6.2.3 WSplitRegion functions

Synopsis:
  WRegion WSplitRegion.reg(WSplitRegion node)
Description:
  Returns the region contained in node. This function is considered safe.

### 6.2.4 WSplitSplit functions

Synopsis:
  WSplit WSplitSplit.br(WSplitSplit split)
Description:
  Returns the bottom or right child node of split depending on the direction of the split. This function is considered safe.

Synopsis:
  string WSplitSplit.dir(WSplitSplit split)
Description:
  Returns the direction of split; either ”vertical” or ”horizontal”. This function is considered safe.

Synopsis:
  void WSplitSplit.flip(WSplitSplit split)
Description:
  Flip contents of node.

Synopsis:
  WSplit WSplitSplit.tl(WSplitSplit split)
Description:
  Returns the top or left child node of split depending on the direction of the split. This function is considered safe.

### 6.2.5 WTiling functions

Synopsis:
  bool WTiling.flip_at(WTiling ws, WRegion reg)
Description:
  Flip ws at reg or root if nil.

Synopsis:
  bool WTiling.transpose_at(WTiling ws, WRegion reg)
Description:
  Transpose ws at reg or root if nil.

Synopsis:
  WRegion WTiling.farthest(WTiling ws, string dirstr, bool any)
Description:
  Return the most previously active region on ws with no other regions next to it in direction dirstr (left/right/up/down). If any is not set, the status display is not considered. This function is considered safe.

Synopsis:
  bool WTiling.managed_i(WTiling ws, function iterfn)
Description:
  Iterate over managed regions of ws until iterfn returns false. The function itself returns true if it reaches the end of list without this happening. This function is considered safe.

Synopsis:
  WRegion WTiling.nextto(WTiling ws, WRegion reg, string dirstr, bool any)
Description:
  Return the most previously active region next to reg in direction dirstr (left/right/up/down). The region reg must be managed by ws. If any is not set, the status display is not considered. This function is considered safe.

Synopsis:
  WSplitRegion WTiling.node_of(WTiling ws, WRegion reg)
Description:
  For region reg managed by ws return the WSplit a leaf of which reg is. This function is considered safe.

Synopsis:
  bool WTiling.set_floating_at(WTiling ws, WRegion reg, string how, string dirstr)
Description:
  Toggle floating of the sides of a split containin reg as indicated by the parameters how (set/unset/toggle) and dirstr (left/right/up/down/any). The new status is returned (and false also on error).

Synopsis:
  WSplitSplit WTiling.set_floating(WTiling ws, WSplitSplit split, string how)
Description:
  Toggle floating of a split's sides at split as indicated by the parameter how (set/unset/toggle). A split of the appropriate is returned, if there was a change.

Synopsis:
  WFrame WTiling.split(WTiling ws, WSplit node, string dirstr)
Description:
  Create a new frame on ws above/below/left of/right of node as indicated by dirstr. If dirstr is prefixed with ”floating:” a floating split is created.

Synopsis:
  WFrame WTiling.split_at(WTiling ws, WFrame frame, string dirstr, bool attach_current)
Description:
  Split frame creating a new frame to direction dirstr (one of ”left”, ”right”, ”top” or ”bottom”) of frame. If attach_current is set, the region currently displayed in frame, if any, is moved to thenew frame. If dirstr is prefixed with ”floating:” a floating split is created.

Synopsis:
  WFrame WTiling.split_top(WTiling ws, string dirstr)
Description:
  Same as WTiling.split at the root of the split tree.

Synopsis:
  WSplit WTiling.split_tree(WTiling ws)
Description:
  Returns the root of the split tree. This function is considered safe.

Synopsis:
  void WTiling.unsplit_at(WTiling ws, WRegion reg)
Description:
  Try to relocate regions managed by reg to another frame and, if possible, destroy it.

##
6.3 Functions defined in mod_query

Synopsis:
  mod_query.defcmd(cmd, fn)
Description:
  Define a command override for the query_exec query.

Synopsis:
  mod_query.message(mplex, str)
Description:
  Display a message in mplex.

Synopsis:
  table mod_query.get()
Description:
  Get module configuration. For more information see mod_query.set. This function is considered safe.

Synopsis:
  void mod_query.history_clear()
Description:
  Clear line editor history.

Synopsis:
  string mod_query.history_get(integer n)
Description:
  Get entry at index n in line editor history, 0 being the latest. This function is considered safe.

Synopsis:
  bool mod_query.history_push(string str)
Description:
  Push an entry into line editor history.

Synopsis:
  integer mod_query.history_search(string s, integer from, bool bwd, bool exact)
Description:
  Try to find matching history entry. Returns -1 if none was found. The parameter from specifies where to start searching from, and bwd causes backward search from that point. If exact is not set, s only required to be a prefix of the match. This function is considered safe.

Synopsis:
  table mod_query.history_table()
Description:
  Return table of history entries. This function is considered safe.

Synopsis:
  void mod_query.set(table tab)
Description:
  Set module configuration. The following are supported:

  Field | Description
  autoshowcompl | (boolean) Is auto-show-completions enabled? (default: true).
  autoshowcompl_delay | (integer) auto-show-completions delay in milliseconds (default: 250).
  caseicompl | (boolean) Turn some completions case-insensitive (default: true).

Synopsis:
  mod_query.popen_completions(cp, cmd, fn, reshnd)
Description:
  This function can be used to read completions from an external source. The parameter cp is the completion proxy to be used, and the string cmd the shell command to be executed. To its stdout, the command should on the first line write the common_beg parameter of WComplProxy.set_completions (which fn maybe used to override) and a single actual completion on each of the successive lines. The function reshnd may be used to override a result table building routine.

Synopsis:
  mod_query.query(mplex, prompt, initvalue, handler, completor, context)
Description:
  Low-level query routine. mplex is the WMPlex to display the query in, prompt the prompt string, and initvalue the initial contents of the query box. handler is a function that receives (mplex, result string) as parameter when the query has been succesfully completed, completor the completor routine which receives a (cp, str, point) as parameters. The parameter str is the string to be completed and point cursor's location within it. Completions should be eventually, possibly asynchronously, set with WComplProxy.set_completions on cp.

Synopsis:
  mod_query.query_attachclient(mplex)
Description:
  This query asks for the name of a client window and attaches it to the frame the query was opened in. It uses the completion function ioncore.complete_clientwin.

Synopsis:
  mod_query.query_binding(mplex, sub)
Description:
  Find keybindings

Synopsis:
  mod_query.query_editfile(mplex, script, prompt)
Description:
  Asks for a file to be edited. This script uses run-mailcap –mode=edit by default, but you may provide an alternative script to use. The default prompt is "Edit file:" (translated).

Synopsis:
  mod_query.query_exec(mplex)
Description:
  This function asks for a command to execute with /bin/sh. If the command is prefixed with a colon (':'), the command will be run in an XTerm (or other terminal emulator) using the script ion-runinxterm. Two colons ('::') will ask you to press enter after the command has finished.

Synopsis:
  mod_query.query_gotoclient(mplex)
Description:
  This query asks for the name of a client window and switches focus to the one entered. It uses the completion function ioncore.complete_clientwin.

Synopsis:
  mod_query.query_lua(mplex)
Description:
  This query asks for Lua code to execute. It sets the variable '_' in the local environment of the string to point to the mplex where the query was created. It also sets the table arg in the local environment to {_, _:current()}.

Synopsis:
  mod_query.query_man(mplex, prog)
Description:
  This query asks for a manual page to display. By default it runs the man command in an xterm using ion-runinxterm, but it is possible to pass another program as the prog argument.

Synopsis:
  mod_query.query_menu(mplex, sub, themenu, prompt)
Description:
  This query can be used to create a query of a defined menu.

Synopsis:
  mod_query.query_renameframe(frame)
Description:
  This function asks for a name new for the frame where the query was created.

Synopsis:
  mod_query.query_renameworkspace(mplex, ws)
Description:
  This function asks for a name new for the workspace ws, or the one on which mplex resides, if it is not set. If mplex is not set, one is looked for.

Synopsis:
  mod_query.query_restart(mplex)
Description:
  This query asks whether the user wants restart Ioncore. If the answer is 'y', 'Y' or 'yes', so will happen.

Synopsis:
  mod_query.query_runfile(mplex, script, prompt)
Description:
  Asks for a file to be viewed. This script uses xdg-open by default, but you may provide an alternative script to use. The default prompt is "View file:" (translated).

Synopsis:
  mod_query.query_shutdown(mplex)
Description:
  This query asks whether the user wants to exit Ion (no session manager) or close the session (running under a session manager that supports such requests). If the answer is 'y', 'Y' or 'yes', so will happen.

Synopsis:
  mod_query.query_ssh(mplex, ssh)
Description:
  This query asks for a host to connect to with SSH. Hosts to tab-complete are read from /.ssh/known_hosts.

Synopsis:
  mod_query.query_workspace(mplex)
Description:
  This query asks for the name of a workspace. If a workspace (an object inheriting WGroupWS) with such a name exists, it will be switched to. Otherwise a new workspace with the entered name will be created and the user will be queried for the type of the workspace.

Synopsis:
  mod_query.query_yesno(mplex, prompt, handler)
Description:
  This function query will display a query with prompt prompt in mplex and if the user answers affirmately, call handler with mplex as parameter.

Synopsis:
  mod_query.show_about_ion(mplex)
Description:
  Display an "About Ion" message in mplex.

Synopsis:
  mod_query.show_tree(mplex, reg, max_depth)
Description:
  Show information about a region tree

Synopsis:
  mod_query.warn(mplex, str)
Description:
  Display an error message box in the multiplexer mplex.

### 6.3.1 WComplProxy functions

Synopsis:
  bool WComplProxy.set_completions(WComplProxy proxy, table compls)
Description:
  Set completion list of the WEdln that proxy refers to to compls, if it is still waiting for this completion run. The numerical indexes of compls list the found completions. If the entry common_beg (common_end) exists, it gives an extra common prefix (suffix) of all found completions.

### 6.3.2 WEdln functions

Synopsis:
  void WEdln.back(WEdln wedln)
Description:
  Move backward one character.

Synopsis:
  void WEdln.backspace(WEdln wedln)
Description:
  Delete previous character.

Synopsis:
  void WEdln.bkill_word(WEdln wedln)
Description:
  Starting from the previous characters, delete possible whitespace and preceding alphanumeric characters until previous non-alphanumeric character.

Synopsis:
  void WEdln.bol(WEdln wedln)
Description:
  Go to the beginning of line.

Synopsis:
  void WEdln.bskip_word(WEdln wedln)
Description:
  Go to to beginning of current sequence of alphanumeric characters followed by whitespace.

Synopsis:
  void WEdln.clear_mark(WEdln wedln)
Description:
  Clear mark.

Synopsis:
  void WEdln.complete(WEdln wedln, string cycle, string mode)
Description:
  Call completion handler with the text between the beginning of line and current cursor position, or select next/previous completion from list if in auto-show-completions mode and cycle is set to “next” or “prev”, respectively. The mode may be “history” or “normal”. If it is not set, the previous mode is used. Normally next entry is not cycled to despite the setting of cycle if mode switch occurs. To override this, use “next-always” and “prev-always” for cycle.

Synopsis:
  string WEdln.contents(WEdln wedln)
Description:
  Get line editor contents. This function is considered safe.

Synopsis:
  string WEdln.context(WEdln wedln)
Description:
  Get history context for wedln. This function is considered safe.

Synopsis:
  void WEdln.copy(WEdln wedln)
Description:
  Copy text between mark and current cursor position to clipboard.

Synopsis:
  void WEdln.cut(WEdln wedln)
Description:
  Copy text between mark and current cursor position to clipboard and then delete that sequence.

Synopsis:
  void WEdln.delete(WEdln wedln)
Description:
  Delete current character.

Synopsis:
  void WEdln.eol(WEdln wedln)
Description:
  Go to the end of line.

Synopsis:
  void WEdln.finish(WEdln wedln)
Description:
  Close wedln and call any handlers.

Synopsis:
  void WEdln.forward(WEdln wedln)
Description:
  Move forward one character.

Synopsis:
  void WEdln.history_next(WEdln wedln, bool match)
Description:
  Replace line editor contents with next entry in history if one exists. If match is true, the initial part of the history entry must match the current line from beginning to point.

Synopsis:
  void WEdln.history_prev(WEdln wedln, bool match)
Description:
  Replace line editor contents with previous in history if one exists. If match is true, the initial part of the history entry must match the current line from beginning to point.

Synopsis:
  void WEdln.insstr(WEdln wedln, string str)
Description:
  Input str in wedln at current editing point.

Synopsis:
  bool WEdln.is_histcompl(WEdln wedln)
Description:
  Get history completion mode.

Synopsis:
  void WEdln.kill_line(WEdln wedln)
Description:
  Delete the whole line.

Synopsis:
  void WEdln.kill_to_bol(WEdln wedln)
Description:
  Delete all characters from previous to beginning of line.

Synopsis:
  void WEdln.kill_to_eol(WEdln wedln)
Description:
  Delete all characters from current to end of line.

Synopsis:
  void WEdln.kill_word(WEdln wedln)
Description:
  Starting from the current point, delete possible whitespace and following alphanumeric characters until next non-alphanumeric character.

Synopsis:
  integer WEdln.mark(WEdln wedln)
Description:
  Get current mark (start of selection) for wedln. Return value of -1 indicates that there is no mark, and 0 is the beginning of the line. This function is considered safe.

Synopsis:
  bool WEdln.next_completion(WEdln wedln)
Description:
  Select next completion.

Synopsis:
  void WEdln.paste(WEdln wedln)
Description:
  Request selection from application holding such.

  Note that this function is asynchronous; the selection will not actually be inserted before Ion receives it. This will be no earlier than Ion return to its main loop.

Synopsis:
  integer WEdln.point(WEdln wedln)
Description:
  Get current editing point. Beginning of the edited line is point 0. This function is considered safe.

Synopsis:
  bool WEdln.prev_completion(WEdln wedln)
Description:
  Select previous completion.

Synopsis:
  void WEdln.set_context(WEdln wedln, string context)
Description:
  Set history context for wedln.

Synopsis:
  void WEdln.set_mark(WEdln wedln)
Description:
  Set mark to current cursor position.

Synopsis:
  void WEdln.skip_word(WEdln wedln)
Description:
  Go to to end of current sequence of whitespace followed by alphanumeric characters..

Synopsis:
  void WEdln.transpose_chars(WEdln wedln)
Description:
  Transpose characters.

Synopsis:
  void WEdln.transpose_words(WEdln wedln)
Description:
  Transpose words.

### 6.3.3 WInput functions

Synopsis:
  void WInput.cancel(WInput input)
Description:
  Close input not calling any possible finish handlers.

Synopsis:
  void WInput.scrolldown(WInput input)
Description:
  Scroll input input text contents down.

Synopsis:
  void WInput.scrollup(WInput input)
Description:
  Scroll input input text contents up.

##
6.4 Functions defined in mod_menu

Synopsis:
  mod_menu.grabmenu(mplex, sub, menu_or_name, param)
Description:
  This function is similar to mod_menu.menu, but input is grabbed and the key used to active the menu can be used to cycle through menu entries.

Synopsis:
  mod_menu.menu(mplex, sub, menu_or_name, param)
Description:
  Display a menu in the lower-left corner of mplex. The variable menu_or_name is either the name of a menu defined with mod_menu.defmenu or directly a table similar to ones passesd to this function. When this function is called from a binding handler, sub should be set to the second argument of to the binding handler (_sub) so that the menu handler will get the same parameters as the binding handler. Extra options can be passed in the table param. The initial entry can be specified as the field initial as an integer starting from 1. Menus can be made to use a bigger style by setting the field big to true. The position can be set using the field sizepolicy.

Synopsis:
  table mod_menu.get()
Description:
  Get module basic settings. For details, see mod_menu.set. This function is considered safe.

Synopsis:
  void mod_menu.set(table tab)
Description:
  Set module basic settings. The parameter table may contain the following fields:

  Field | Description
  scroll_amount | Number of pixels to scroll at a time pointer-controlled menus when one extends beyond a border of the screen and the pointer touches that border.
  scroll_delay | Time between such scrolling events in milliseconds.

Synopsis:
  mod_menu.pmenu(win, sub, menu_or_name)
Description:
  This function displays a drop-down menu and should only be called from a mouse press handler. The parameters are similar to those of mod_menu.menu.

### 6.4.1 WMenu functions

Synopsis:
  void WMenu.cancel(WMenu menu)
Description:
  Close menu not calling any possible finish handlers.

Synopsis:
  void WMenu.finish(WMenu menu)
Description:
  If selected entry is a submenu, display that. Otherwise destroy the menu and call handler for selected entry.

Synopsis:
  void WMenu.select_next(WMenu menu)
Description:
  Select next entry in menu.

Synopsis:
  void WMenu.select_nth(WMenu menu, integer n)
Description:
  Select n:th entry in menu.

Synopsis:
  void WMenu.select_prev(WMenu menu)
Description:
  Select previous entry in menu.

Synopsis:
  void WMenu.typeahead_clear(WMenu menu)
Description:
  Clear typeahead buffer.

##
6.5 Functions defined in mod_dock

Synopsis:
  void mod_dock.set_floating_shown_on(WMPlex mplex, string how)
Description:
  Toggle floating docks on mplex.

### 6.5.1 WDock functions

Synopsis:
  bool WDock.attach(WDock dock, WRegion reg)
Description:
  Attach reg to dock.

Synopsis:
  table WDock.get(WDock dock)
Description:
  Get dock's configuration table. See WDock.set for a description of the table. This function is considered safe.

Synopsis:
  void WDock.resize(WDock dock)
Description:
  Resizes and refreshes dock.

Synopsis:
  void WDock.set(WDock dock, table conftab)
Description:
  Configure dock. conftab is a table of key/value pairs:

  Key | Values | Description
  name | string | Name of dock
  pos | string in {t, m, b}×{t, c, b} | Dock position. Can only be used in floating mode.
  grow | up/down/left/right | Growth direction where new dockapps are added. Also sets orientation for dock when working as WMPlex status display (see WMPlex.set_stdisp).
  is_auto | bool | Should dock automatically manage new dockapps?

  Any parameters not explicitly set in conftab will be left unchanged.

##
6.6 Functions defined in mod_sp

Synopsis:
  bool mod_sp.create_scratchpad(WScreen scr)
Description:
  Attempt to create a scratchpad on scr.

Synopsis:
  bool mod_sp.is_scratchpad(WRegion reg)
Description:
  Is reg a scratchpad? This function is considered safe.

Synopsis:
  bool mod_sp.set_shown(WFrame sp, string how)
Description:
  Toggle displayed status of sp. The parameter how is one of (set/unset/toggle).

Synopsis:
  bool mod_sp.set_shown_on(WMPlex mplex, string how)
Description:
  Change displayed status of some scratchpad on mplex if one is found. The parameter how is one of (set/unset/toggle).

Synopsis:
  void mod_sp.set_size(integer width, integer height)
Description:
  Set default dimension for newly created scratchpads with parameters width and height.

##
6.7 Functions defined in mod_statusbar

Synopsis:
  mod_statusbar.create(param)
Description:
  Create a statusbar. The possible parameters in the table param are:

  Variable | Type | Description
  template | string | The template; see Section .
  pos | string | Position: "tl", "tr", "bl" or "br" (for the obvious combinations of top/left/bottom/right).
  screen | integer | Screen number to create the statusbar on.
  fullsize | boolean | If set, the statusbar will waste space instead of adapting to layout.
  systray | boolaen | Swallow (KDE protocol) systray icons.

Synopsis:
  mod_statusbar.inform(name, value)
Description:
  Inform of a value.

Synopsis:
  mod_statusbar.launch_statusd(cfg)
Description:
  Load modules and launch ion-statusd with configuration table cfg. The options for each ion-statusd monitor script should be contained in the corresponding sub-table of cfg.

Synopsis:
  table mod_statusbar.statusbars()
Description:
  Returns a list of all statusbars.

Synopsis:
  mod_statusbar.terminate_statusd()
Description:
  Function to terminate ion-statusd on exit or reload. Should be called from hook deinit.

Synopsis:
  mod_statusbar.update(update_templates)
Description:
  Update statusbar contents. To be called after series of mod_statusbar.inform calls.

### 6.7.1 WStatusBar functions

Synopsis:
  table WStatusBar.get_template_table(WStatusBar sb)
Description:
  Get statusbar template as table.

Synopsis:
  bool WStatusBar.is_systray(WStatusBar sb)
Description:
  Is sb used as a systray?

Synopsis:
  bool WStatusBar.set_systray(WStatusBar sb, string how)
Description:
  Enable or disable use of sb as systray. The parameter how can be one of (set/unset/toggle). Resulting state is returned.

Synopsis:
  void WStatusBar.set_template(WStatusBar sb, string tmpl)
Description:
  Set statusbar template.

Synopsis:
  void WStatusBar.set_template_table(WStatusBar sb, table t)
Description:
  Set statusbar template as table.

Synopsis:
  void WStatusBar.update(WStatusBar sb, table t)
Description:
  Set statusbar template.

##
6.8 Functions defined in de

Synopsis:
  bool de.defstyle(string name, table tab)
Description:
  Define a style.

Synopsis:
  bool de.defstyle_rootwin(WRootWin rootwin, string name, table tab)
Description:
  Define a style for the root window rootwin.

Synopsis:
  void de.reset()
Description:
  Clear all styles from drawing engine memory.

Synopsis:
  table de.substyle(string pattern, table tab)
Description:
  Define a substyle. This function is considered safe.

##
6.9 Hooks

Hook name:
  clientwin_do_manage_alt
Parameters:
  (WClientWin, table)
Description:
  Called when we want to manage a new client window. The table argument contains the following fields:

  Field | Type | Description
  switchto | bool | Do we want to switch to the client window.
  jumpto | bool | Do we want to jump to the client window.
  userpos | bool | Geometry set by user.
  dockapp | bool | Client window is a dock-app.
  maprq | bool | Map request (and not initialisation scan).
  gravity | number | Window gravity.
  geom | table | Requested geometry; x, y, w, h.
  tfor | WClientWin | Transient for window.

  This hook is not called in protected mode and can be used for arbitrary placement policies (deciding in which workspace a new WClientWin should go). In this case, you can call

      reg:attach(cwin)

  where reg is the region where the window should go, and cwin is the first argument of the function added to the hook.

Hook name:
  clientwin_mapped_hook
Parameters:
  WClientWin
Description:
  Called when we have started to manage a client window.

Hook name:
  clientwin_property_change_hook
Parameters:
  (WClientWin, integer)
Description:
  Called when the property identified by the parameter atom id (integer) has changed on a client window.

Hook name:
  clientwin_unmapped_hook
Parameters:
  number
Description:
  Called when we no longer manage a client window. The parameter is the X ID of the window; see WClientWin.xid.

Hook name:
  frame_managed_changed_hook
Parameters:
  table
Description:
  Called when there are changes in the objects managed by a frame or their order. The table parameter has the following fields:

  Field | Type | Description
  reg | WFrame | The frame in question
  mode | string | `switchonly', `reorder', `add' or `remove'
  sw | bool | Switch occurred
  sub | WRegion | The managed region (primarily) affected

Hook name:
  ioncore_sigchld_hook
Parameters:
  integer
Description:
  Called when a child process has exited. The parameter is the PID of the process.

Hook name:
  ioncore_deinit_hook
Parameters:
  ()
Description:
  Called when Notion is deinitialising and about to quit.

Hook name:
  ioncore_post_layout_setup_hook
Parameters:
  ()
Description:
  Called when Notion has done all initialisation and is almost ready to enter the main-loop, except no windows are yet being managed.

Hook name:
  ioncore_snapshot_hook
Parameters:
  ()
Description:
  Called to signal scripts and modules to save their state (if any).

Hook name:
  ioncore_submap_ungrab_hook
Parameters:
  ()
Description:
  This hook is used to signal whenever Notion leaves the submap grab mode.

Hook name:
  tiling_placement_alt
Parameters:
  table
Description:
  Called when a client window is about to be managed by a WTiling to allow for alternative placement policies. The table has the following fields:

  Field | Type | Description
  tiling | WTiling | The tiling
  reg | WRegion | The region (always a WClientWin at the moment) to be placed
  mp | table | This table contains the same fields as the parameter of clientwin_do_manage_alt
  res_frame | WFrame | A successful handler should return the target frame here.

  This hook is just for placing within a given workspace after the workspace has been decided by the default workspace selection policy. It is called in protected mode. For arbitrary placement policies, clientwin_do_manage_alt should be used; it isn't called in protected mode,

Hook name:
  region_do_warp_alt
Parameters:
  WRegion
Description:
  This alt-hook exist to allow for alternative pointer warping implementations.

Hook name:
  screen_managed_changed_hook
Parameters:
  table
Description:
  Called when there are changes in the objects managed by a screen or their order. The table parameter is similar to that of frame_managed_changed_hook.

Hook name:
  region_notify_hook
Parameters:
  (WRegion, string)
Description:
  Signalled when something (minor) has changed in relation to the first parameter region. The string argument gives the change:

  String | Description
  deinit | The region is about to be deinitialised.
  activated | The region has received focus.
  inactivated | The region has lost focus.
  activity | There's been activity in the region itself.
  sub_activity | There's been activity in some sub-region.
  name | The name of the region has changed.
  unset_manager | The region no longer has a manager.
  set_manager | The region now has a manager.
  tag | Tagging state has changed.
  pseudoactivated | The region has become pseudo-active (see below).
  pseudoinactivated | The region is no longer pseudo-active.

  A region is pseudo-active, when a) it is itself not active (does not not have the focus, and may not even have a window that could have it), but b) some region managed by it is active.

##
6.10 Miscellaneous

###
6.10.1 Size policies

Some functions accept a sizepolicy parameter. The possible values are:

`default', `full', `full_bounds', `free', `free_glue', `northwest', `north', `northeast', `west', `center', `east', `southwest', `south', `southeast', `stretch_top', `stretch_bottom', `stretch_left', `stretch_right', `free_glue_northwest', `free_glue_north', `free_glue_northeast', `free_glue_west', `free_glue_center', `free_glue_east', `free_glue_southwest', `free_glue_south', and `free_glue_southeast'.

The “free” policies allow the managed object to be moved around, whereas the other versions do not. The “glue” policies glue the object to some border, while allowing it to be moved away from it by user action, but not automatically. The “stretch” policies stretch the object along the given border, while the coordinate-based policies simply place the object along that border.