--- Get a widget index.
-- @param widget The widget to look for
-- @param[opt] recursive Also check sub-widgets
-- @param[opt] ... Additional widgets to add at the end of the path
-- @return The index
-- @return The parent layout
-- @return The path between self and widget
-- @method index
-- @baseclass wibox.widget

--- Get or set the children elements.
-- @property children
-- @tparam table children
-- @tablerowtype A list of `widget`s.
-- @baseclass wibox.widget
-- @see 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.
-- @property all_children
-- @tparam table all_children
-- @tablerowtype A list of `widget`s.
-- @baseclass wibox.widget
-- @see children

--- Set a declarative widget hierarchy description.
-- See [The declarative layout system](../documentation/03-declarative-layout.md.html)
-- @tparam table args An array containing the widgets disposition
-- @method setup
-- @noreturn
-- @baseclass wibox.widget

--- Force a widget height.
-- @property forced_height
-- @tparam number|nil forced_height
-- @propertytype nil Let the layout decide the height. Usually using the widget
--  native height.
-- @propertytype number Enforce a number of pixels.
-- @negativeallowed false
-- @baseclass wibox.widget
-- @see forced_width

--- Force a widget width.
-- @property forced_width
-- @tparam number|nil forced_width
-- @propertytype nil Let the layout decide the width. Usually using the widget
--  native width.
-- @propertytype number Enforce a number of pixels.
-- @negativeallowed false
-- @baseclass wibox.widget
-- @see forced_height

--- The widget opacity (transparency).
-- @property opacity
-- @tparam[opt=1] number opacity.
-- @rangestart 0.0
-- @rangestop 1.0
-- @baseclass wibox.widget

--- The widget visibility.
-- @property visible
-- @tparam[opt=true] boolean visible
-- @baseclass wibox.widget

--- The widget buttons.
--
-- The table contains a list of `awful.button` objects.
--
-- @property buttons
-- @tparam[opt={}] table buttons
-- @see awful.button
-- @tablerowtype A list of `awful.button`.
-- @baseclass wibox.widget

--- Add a new `awful.button` to this widget.
-- @tparam awful.button button The button to add.
-- @method add_button
-- @noreturn
-- @baseclass wibox.widget

--- 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.
-- @tparam string signal_name
-- @param ... Other arguments
-- @baseclass wibox.widget
-- @method emit_signal_recursive
-- @noreturn

--- 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.
-- @signal widget::layout_changed
-- @see widget::redraw_needed
-- @baseclass wibox.widget

--- 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.
-- @signal widget::redraw_needed
-- @see widget::layout_changed
-- @baseclass wibox.widget

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

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

--- When the mouse enter a widget.
-- @signal mouse::enter
-- @tparam table self The current object instance itself.
-- @tparam table find_widgets_result The entry from the result of
-- @{wibox:find_widgets} for the position that the mouse hit.
-- @tparam wibox.drawable find_widgets_result.drawable The drawable containing
-- the widget.
-- @tparam widget find_widgets_result.widget The widget being displayed.
-- @tparam wibox.hierarchy find_widgets_result.hierarchy The hierarchy
-- managing the widget's geometry.
-- @tparam number find_widgets_result.x An approximation of the X position that
-- the widget is visible at on the surface.
-- @tparam number find_widgets_result.y An approximation of the Y position that
-- the widget is visible at on the surface.
-- @tparam number find_widgets_result.width An approximation of the width that
-- the widget is visible at on the surface.
-- @tparam number find_widgets_result.height An approximation of the height that
-- the widget is visible at on the surface.
-- @tparam number find_widgets_result.widget_width The exact width of the widget
-- in its local coordinate system.
-- @tparam number find_widgets_result.widget_height The exact height of the widget
-- in its local coordinate system.
-- @see mouse
-- @baseclass wibox.widget

--- When the mouse leave a widget.
-- @signal mouse::leave
-- @tparam table self The current object instance itself.
-- @tparam table find_widgets_result The entry from the result of
-- @{wibox:find_widgets} for the position that the mouse hit.
-- @tparam wibox.drawable find_widgets_result.drawable The drawable containing
-- the widget.
-- @tparam widget find_widgets_result.widget The widget being displayed.
-- @tparam wibox.hierarchy find_widgets_result.hierarchy The hierarchy
-- managing the widget's geometry.
-- @tparam number find_widgets_result.x An approximation of the X position that
-- the widget is visible at on the surface.
-- @tparam number find_widgets_result.y An approximation of the Y position that
-- the widget is visible at on the surface.
-- @tparam number find_widgets_result.width An approximation of the width that
-- the widget is visible at on the surface.
-- @tparam number find_widgets_result.height An approximation of the height that
-- the widget is visible at on the surface.
-- @tparam number find_widgets_result.widget_width The exact width of the widget
-- in its local coordinate system.
-- @tparam number find_widgets_result.widget_height The exact height of the widget
-- in its local coordinate system.
-- @see mouse
-- @baseclass wibox.widget