# Class `awful.widget.layoutlist`

Display the available client layouts for a screen.

This is what the layoutlist looks like by default with a vertical layout:

    awful.popup {
        widget = awful.widget.layoutlist {
            screen      = 1,
            base_layout = wibox.layout.flex.vertical
        },
        maximum_height = #awful.layout.layouts * 24,
        minimum_height = #awful.layout.layouts * 24,
        placement      = awful.placement.centered,
    }

In the second example, it is shown how to create a popup in the center of the screen:

    local ll = awful.widget.layoutlist {
        base_layout = wibox.widget {
            spacing         = 5,
            forced_num_cols = 5,
            layout          = wibox.layout.grid.vertical,
        },
        widget_template = {
            {
                {
                    id            = 'icon_role',
                    forced_height = 22,
                    forced_width  = 22,
                    widget        = wibox.widget.imagebox,
                },
                margins = 4,
                widget  = wibox.container.margin,
            },
            id              = 'background_role',
            forced_width    = 24,
            forced_height   = 24,
            shape           = gears.shape.rounded_rect,
            widget          = wibox.container.background,
        },
    }

    local layout_popup = awful.popup {
        widget = wibox.widget {
            ll,
            margins = 4,
            widget  = wibox.container.margin,
        },
        border_color = beautiful.border_color,
        border_width = beautiful.border_width,
        placement    = awful.placement.centered,
        ontop        = true,
        visible      = false,
        shape        = gears.shape.rounded_rect
    }

    -- Make sure you remove the default Mod4+Space and Mod4+Shift+Space
    -- keybindings before adding this.
    awful.keygrabber {
        start_callback = function() layout_popup.visible = true  end,
        stop_callback  = function() layout_popup.visible = false end,
        export_keybindings = true,
        release_event = 'release',
        stop_key = {'Escape', 'Super_L', 'Super_R'},
        keybindings = {
            {{ modkey          } , ' ' , function()
                awful.layout.set(gears.table.iterate_value(ll.layouts, ll.current_layout, 1))
            end},
            {{ modkey, 'Shift' } , ' ' , function()
                awful.layout.set(gears.table.iterate_value(ll.layouts, ll.current_layout, -1), nil)
            end},
        }
    }

This example extends 'awful.widget.layoutbox' to show a layout list popup:

    -- Normally you would use your existing bars, but for this example, we add one
    local lb = awful.widget.layoutbox(screen[1])
    local l = wibox.layout.align.horizontal(nil, lb, nil)
    l.expand = 'outside'
    awful.wibar { widget = l }

    local p = awful.popup {
        widget = wibox.widget {
            awful.widget.layoutlist {
                source      = awful.widget.layoutlist.source.default_layouts,
                screen      = 1,
                base_layout = wibox.widget {
                    spacing         = 5,
                    forced_num_cols = 3,
                    layout          = wibox.layout.grid.vertical,
                },
                widget_template = {
                    {
                        {
                            id            = 'icon_role',
                            forced_height = 22,
                            forced_width  = 22,
                            widget        = wibox.widget.imagebox,
                        },
                        margins = 4,
                        widget  = wibox.container.margin,
                    },
                    id              = 'background_role',
                    forced_width    = 24,
                    forced_height   = 24,
                    shape           = gears.shape.rounded_rect,
                    widget          = wibox.container.background,
                },
            },
            margins = 4,
            widget  = wibox.container.margin,
        },
        preferred_anchors = 'middle',
        border_color      = beautiful.border_color,
        border_width      = beautiful.border_width,
        shape             = gears.shape.infobubble,
    }
    p:bind_to_widget(lb)

This example shows how to add a layout subset to the default wibar:

    wb:setup {
        layout = wibox.layout.align.horizontal,
        { -- Left widgets
            mytaglist,
            awful.widget.layoutlist {
                screen = 1,
                style = {
                    disable_name = true,
                    spacing      = 3,
                },
                source = function() return {
                    awful.layout.suit.floating,
                    awful.layout.suit.tile,
                    awful.layout.suit.tile.left,
                    awful.layout.suit.tile.bottom,
                    awful.layout.suit.tile.top,
                } end
            },
            layout = wibox.layout.fixed.horizontal,
        },
        mytasklist, -- Middle widget
        { -- Right widgets
            layout = wibox.layout.fixed.horizontal,
            mykeyboardlayout,
            mytextclock,
            mylayoutbox,
        },
    }

### Info:

- Copyright: 2010, 2018 Emmanuel Lepage Vallee
- Author: Emmanuel Lepage Vallee <elv1313@gmail.com>

## Functions

awful.widget.layoutlist (args) | Create a layout list.

## Object properties

base_layout | The layoutlist default widget layout.
widget_template | The delegate widget template.
screen | The layoutlist screen.
source | A function that returns the list of layout to display.
filter | The layoutlist filter function.
buttons | The layoutlist buttons.
layouts | The currenly displayed layouts.
current_layout | The currently selected layout.
forced_height | Force a widget height.
forced_width | Force a widget width.
opacity | The widget opacity (transparency).
visible | The widget visibility.

## Signals

widget::layout_changed | When the layout (size) change.
widget::redraw_needed | When the widget content changed.
button::press | When a mouse button is pressed over the widget.
button::release | When a mouse button is released over the widget.
mouse::enter | When the mouse enter a widget.
mouse::leave | When the mouse leave a widget.

## Theme variables

beautiful.layoutlist_fg_normal | The default foreground (text) color.
beautiful.layoutlist_bg_normal | The default background color.
beautiful.layoutlist_fg_selected | The selected layout foreground (text) color.
beautiful.layoutlist_bg_selected | The selected layout background color.
beautiful.layoutlist_disable_icon | Disable the layout icons (only show the name label).
beautiful.layoutlist_disable_name | Disable the layout name label (only show the icon).
beautiful.layoutlist_font | The layoutlist font.
beautiful.layoutlist_align | The selected layout alignment.
beautiful.layoutlist_font_selected | The selected layout title font.
beautiful.layoutlist_spacing | The space between the layouts.
beautiful.layoutlist_shape | The default layoutlist elements shape.
beautiful.layoutlist_shape_border_width | The default layoutlist elements border width.
beautiful.layoutlist_shape_border_color | The default layoutlist elements border color.
beautiful.layoutlist_shape_selected | The selected layout shape.
beautiful.layoutlist_shape_border_width_selected | The selected layout border width.
beautiful.layoutlist_shape_border_color_selected | The selected layout border color.

## List source functions

awful.widget.layoutlist.source.for_screen | The layout list for the first selected tag of a screen.
awful.widget.layoutlist.source.current_screen | The layouts available for the first selected tag of `awful.screen.focused()`.
awful.widget.layoutlist.source.default_layouts | The default layout list.

## Methods

awful.widget.layoutlist:get_all_children () | Get all direct and indirect children widgets.
awful.widget.layoutlist:setup (args) | Set a declarative widget hierarchy description.
awful.widget.layoutlist:buttons (_buttons) | Set/get a widget's buttons.
awful.widget.layoutlist:emit_signal_recursive (signal_name, ...) | Emit a signal and ensure all parent widgets in the hierarchies also forward the signal.
awful.widget.layoutlist:emit_signal (name, ...) | Emit a signal.
awful.widget.layoutlist:connect_signal (name, func) | Connect to a signal.
awful.widget.layoutlist:weak_connect_signal (name, func) | Connect to a signal weakly.

## Functions

Methods

awful.widget.layoutlist (args)
  Create a layout list.
  - args
    - layout widget The widget layout (not to be confused with client layout).
    - buttons table The list of `awful.buttons`. (default nil)
    - source function A function to generate the list of layouts. (default awful.widget.layoutlist.source.for_screen)
    - widget_template table A custom widget to be used for each action. (optional)
    - screen screen A screen (default ascreen.focused())
    - buttons table The list of `awful.buttons`. (default nil)
    - style table Extra look and feel parameters (default {})
    - style.disable_icon boolean
    - style.disable_name boolean
    - style.fg_normal string or pattern
    - style.bg_normal string or pattern
    - style.fg_selected string or pattern
    - style.bg_selected string or pattern
    - style.font string
    - style.font_selected string
    - style.align string left, right or center
    - style.spacing number
    - style.shape gears.shape
    - style.shape_border_width number
    - style.shape_border_color string or pattern
    - style.shape_selected gears.shape
    - style.shape_border_width_selected string or pattern
    - style.shape_border_color_selected string or pattern

  ### Returns:

  widget The action widget.

## Object properties

base_layout
  The layoutlist default widget layout. If no layout is specified, a wibox.layout.fixed.vertical will be created automatically.

  ### Type:

  - widget

  ### See also:

  - wibox.layout.fixed.vertical
  - awful.widget.layoutlist.base_layout
widget_template
  The delegate widget template.

  ### Type:

  - table
screen
  The layoutlist screen.

  ### Type:

  - screen
source
  A function that returns the list of layout to display.

  ### Type:

  - function (default awful.widget.layoutlist.source.for_screen)
filter
  The layoutlist filter function.

  ### Type:

  - function (default awful.widget.layoutlist.source.for_screen)
buttons

  The layoutlist buttons.

  The default is:

      gears.table.join(
          awful.button({ }, 1, awful.layout.set)
      )

  ### Type:

  - table
layouts
  The currenly displayed layouts.

  ### Type:

  - table
current_layout
  The currently selected layout.

  ### Type:

  - layout
forced_height
  Force a widget height.

  ### Type:

  - height number or nil The height (`nil` for automatic)
forced_width
  Force a widget width.

  ### Type:

  - width number or nil The width (`nil` for automatic)
opacity
  The widget opacity (transparency).

  ### Type:

  - opacity number The opacity (between 0 and 1) (default 1)
visible
  The widget visibility.

  ### Type:

  - boolean

## Signals

widget::layout_changed
  When the layout (size) change. This signal is emitted when the previous results of `:layout()` and `:fit()` are no longer valid. Unless this signal is emitted, `:layout()` and `:fit()` must return the same result when called with the same arguments.

  ### See also:

  widget::redraw_needed
widget::redraw_needed
  When the widget content changed. This signal is emitted when the content of the widget changes. The widget will be redrawn, it is not re-layouted. Put differently, it is assumed that `:layout()` and `:fit()` would still return the same results as before.

  ### See also:

  widget::layout_changed
button::press
  When a mouse button is pressed over the widget.

  ### Arguments:

  - lx number The horizontal position relative to the (0,0) position in the widget.
  - ly number The vertical position relative to the (0,0) position in the widget.
  - button number The button number.
  - mods table The modifiers (mod4, mod1 (alt), Control, Shift)
  - find_widgets_result The entry from the result of wibox.drawable:find_widgets for the position that the mouse hit.
    - drawable wibox.drawable The drawable containing the widget.
    - widget widget The widget being displayed.
    - hierarchy wibox.hierarchy The hierarchy managing the widget's geometry.
    - x number An approximation of the X position that the widget is visible at on the surface.
    - y number An approximation of the Y position that the widget is visible at on the surface.
    - width number An approximation of the width that the widget is visible at on the surface.
    - height number An approximation of the height that the widget is visible at on the surface.
    - widget_width number The exact width of the widget in its local coordinate system.
    - widget_height number The exact height of the widget in its local coordinate system.

  ### See also:

  mouse
button::release
  When a mouse button is released over the widget.

  ### Arguments:

  - lx number The horizontal position relative to the (0,0) position in the widget.
  - ly number The vertical position relative to the (0,0) position in the widget.
  - button number The button number.
  - mods table The modifiers (mod4, mod1 (alt), Control, Shift)
  - find_widgets_result The entry from the result of wibox.drawable:find_widgets for the position that the mouse hit.
    - drawable wibox.drawable The drawable containing the widget.
    - widget widget The widget being displayed.
    - hierarchy wibox.hierarchy The hierarchy managing the widget's geometry.
    - x number An approximation of the X position that the widget is visible at on the surface.
    - y number An approximation of the Y position that the widget is visible at on the surface.
    - width number An approximation of the width that the widget is visible at on the surface.
    - height number An approximation of the height that the widget is visible at on the surface.
    - widget_width number The exact width of the widget in its local coordinate system.
    - widget_height number The exact height of the widget in its local coordinate system.

  ### See also:

  mouse
mouse::enter
  When the mouse enter a widget.

  ### Arguments:

  - find_widgets_result The entry from the result of wibox.drawable:find_widgets for the position that the mouse hit.
    - drawable wibox.drawable The drawable containing the widget.
    - widget widget The widget being displayed.
    - hierarchy wibox.hierarchy The hierarchy managing the widget's geometry.
    - x number An approximation of the X position that the widget is visible at on the surface.
    - y number An approximation of the Y position that the widget is visible at on the surface.
    - width number An approximation of the width that the widget is visible at on the surface.
    - height number An approximation of the height that the widget is visible at on the surface.
    - widget_width number The exact width of the widget in its local coordinate system.
    - widget_height number The exact height of the widget in its local coordinate system.

  ### See also:

  mouse
mouse::leave
  When the mouse leave a widget.

  ### Arguments:

  - find_widgets_result The entry from the result of wibox.drawable:find_widgets for the position that the mouse hit.
    - drawable wibox.drawable The drawable containing the widget.
    - widget widget The widget being displayed.
    - hierarchy wibox.hierarchy The hierarchy managing the widget's geometry.
    - x number An approximation of the X position that the widget is visible at on the surface.
    - y number An approximation of the Y position that the widget is visible at on the surface.
    - width number An approximation of the width that the widget is visible at on the surface.
    - height number An approximation of the height that the widget is visible at on the surface.
    - widget_width number The exact width of the widget in its local coordinate system.
    - widget_height number The exact height of the widget in its local coordinate system.

  ### See also:

  mouse

## Theme variables

beautiful.layoutlist_fg_normal
  The default foreground (text) color.

  ### Type:

  - fg_normal string or pattern (default nil)

  ### See also:

  gears.color
beautiful.layoutlist_bg_normal
  The default background color.

  ### Type:

  - bg_normal string or pattern (default nil)

  ### See also:

  gears.color
beautiful.layoutlist_fg_selected
  The selected layout foreground (text) color.

  ### Type:

  - fg_selected string or pattern (default nil)

  ### See also:

  gears.color
beautiful.layoutlist_bg_selected
  The selected layout background color.

  ### Type:

  - bg_selected string or pattern (default nil)

  ### See also:

  gears.color
beautiful.layoutlist_disable_icon
  Disable the layout icons (only show the name label).

  ### Type:

  - layoutlist_disable_icon boolean (default false)
beautiful.layoutlist_disable_name
  Disable the layout name label (only show the icon).

  ### Type:

  - layoutlist_disable_name boolean (default false)
beautiful.layoutlist_font
  The layoutlist font.

  ### Type:

  - font string (default nil)
beautiful.layoutlist_align
  The selected layout alignment.

  ### Type:

  - align string left, right or center (default left)
beautiful.layoutlist_font_selected
  The selected layout title font.

  ### Type:

  - font_selected string (default nil)
beautiful.layoutlist_spacing
  The space between the layouts.

  ### Type:

  - spacing number The spacing between tasks. (default 0)
beautiful.layoutlist_shape
  The default layoutlist elements shape.

  ### Type:

  - shape gears.shape (default nil)
beautiful.layoutlist_shape_border_width
  The default layoutlist elements border width.

  ### Type:

  - shape_border_width number (default 0)
beautiful.layoutlist_shape_border_color
  The default layoutlist elements border color.

  ### Type:

  - shape_border_color string or color (default nil)

  ### See also:

  gears.color
beautiful.layoutlist_shape_selected
  The selected layout shape.

  ### Type:

  - shape_selected gears.shape (default nil)
beautiful.layoutlist_shape_border_width_selected
  The selected layout border width.

  ### Type:

  - shape_border_width_selected number (default 0)
beautiful.layoutlist_shape_border_color_selected
  The selected layout border color.

  ### Type:

  - shape_border_color_selected string or color (default nil)

  ### See also:

  gears.color

## List source functions

awful.widget.layoutlist.source.for_screen
  The layout list for the first selected tag of a screen.
  - s screen The screen.
awful.widget.layoutlist.source.current_screen
  The layouts available for the first selected tag of `awful.screen.focused()`.
awful.widget.layoutlist.source.default_layouts
  The default layout list.

  ### See also:

  awful.layout.layouts

## Methods

awful.widget.layoutlist:get_all_children ()
  Get all direct and indirect children widgets. This will scan all containers recursively to find widgets Warning: This method it prone to stack overflow id the widget, or any of its children, contain (directly or indirectly) itself.

  ### Returns:

  table The children
awful.widget.layoutlist:setup (args)
  Set a declarative widget hierarchy description. See The declarative layout system
  - args An array containing the widgets disposition
awful.widget.layoutlist:buttons (_buttons)
  Set/get a widget's buttons.
  - _buttons The table of buttons that should bind to the widget.
awful.widget.layoutlist:emit_signal_recursive (signal_name, ...)
  Emit a signal and ensure all parent widgets in the hierarchies also forward the signal. This is useful to track signals when there is a dynamic set of containers and layouts wrapping the widget.
  - signal_name string
  - ... Other arguments
awful.widget.layoutlist:emit_signal (name, ...)
  Emit a signal.
  - name string The name of the signal.
  - ... Extra arguments for the callback functions. Each connected function receives the object as first argument and then any extra arguments that are given to emit_signal().
awful.widget.layoutlist:connect_signal (name, func)
  Connect to a signal.
  - name string The name of the signal.
  - func function The callback to call when the signal is emitted.
awful.widget.layoutlist:weak_connect_signal (name, func)
  Connect to a signal weakly.

  This allows the callback function to be garbage collected and automatically disconnects the signal when that happens.

  Warning: Only use this function if you really, really, really know what you are doing.

  - name string The name of the signal.
  - func function The callback to call when the signal is emitted.

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