Basalt2/docs/references/elements/Container.md

Container : VisualElement

The Container class serves as a fundamental building block for organizing UI elements. It acts as a parent element that can hold and manage child elements.

Usage

local container = basalt.getMainFrame()
container:addButton()  -- Add a child element

Properties

Property	Type	Default	Description
children	table	{}	The children of the container
childrenSorted	boolean	true	Whether the children are sorted
childrenEventsSorted	boolean	true	Whether the children events are sorted
childrenEvents	table	{}	The children events of the container
eventListenerCount	table	{}	The event listener count of the container
focusedChild	table	nil	The focused child of the container
visibleChildren	table	{}	The visible children of the container
visibleChildrenEvents	table	{}	The visible children events of the container
offsetX	number	0	Horizontal content offset
offsetY	number	0	Vertical content offset

Combined Properties

Name	Properties	Description
offset	offsetX number, offsetY number	Combined property for offsetX and offsetY

Functions

Method	Returns	Description
Container:addChild	Container	Adds a child to the container
Container:callChildrenEvent	boolean	Calls a event on all children
Container:clear	Container	Clears the container
Container:drawBg	-
Container:drawFg	-
Container:drawText	-
Container:getChild	Container?	Removes a child from the container
Container:isChildVisible	boolean	Returns whether a child is visible
Container:registerChildEvent	Container	Registers the children events of the container
Container:registerChildrenEvents	Container	Registers the children events of the container
Container:removeChild	Container	Removes a child from the container
Container:removeChildrenEvents	Container	Unregisters the children events of the container
Container:sortChildren	Container	Sorts the children of the container
Container:sortChildrenEvents	Container	Sorts the children events of the container
Container:unregisterChildEvent	Container	Unregisters the children events of the container

Protected Functions

Method	Returns	Description
Container:blit	Container	Draws a line of text and fg and bg as colors
Container:char	boolean	Handles char events
Container:handleEvent	boolean	Default handler for events
Container:init	-	Initializes the Container instance
Container:key	boolean	Handles key events
Container:key_up	boolean	Handles key up events
Container:mouse_click	boolean	Handles mouse click events
Container:mouse_drag	boolean	Handles mouse drag events
Container:mouse_move	boolean	Handles mouse move events
Container:mouse_release	-	Handles mouse release events
Container:mouse_scroll	boolean	Handles mouse scroll events
Container:mouse_up	boolean	Handles mouse up events
Container:multiBlit	Container	Draws multiple lines of text, fg and bg strings
Container:render	-	Renders the container
Container:textBg	Container	Draws a line of text and bg as color
Container:textFg	Container	Draws a line of text and fg as color

Container:addChild(child)

Adds a child to the container

Parameters

• child table The child to add

Returns

• Container self The container instance

Container:callChildrenEvent(visibleOnly, event...)

Calls a event on all children

Parameters

• visibleOnly boolean Whether to only call the event on visible children
• event string The event to call
• ... (vararg) any The event arguments

Returns

• boolean handled Whether the event was handled
• table? child The child that handled the event

Container:clear()

Clears the container

Returns

• Container self The container instance

Container:drawBg()

Container:drawFg()

Container:drawText()

Container:getChild(path)

Removes a child from the container

Parameters

• path string The path to the child to remove

Returns

• Container? self The container instance

Container:isChildVisible(child)

Returns whether a child is visible

Parameters

• child table The child to check

Returns

• boolean boolean the child is visible

Container:registerChildEvent(child, eventName)

Registers the children events of the container

Parameters

• child table The child to register events for
• eventName string The event name to register

Returns

• Container self The container instance

Container:registerChildrenEvents(child)

Registers the children events of the container

Parameters

• child table The child to register events for

Returns

• Container self The container instance

Container:removeChild(child)

Removes a child from the container

Parameters

• child table The child to remove

Returns

• Container self The container instance

Container:removeChildrenEvents(child)

Unregisters the children events of the container

Parameters

• child table The child to unregister events for

Returns

• Container self The container instance

Container:sortChildren()

Sorts the children of the container

Returns

• Container self The container instance

Container:sortChildrenEvents(eventName)

Sorts the children events of the container

Parameters

• eventName string The event name to sort

Returns

• Container self The container instance

Container:unregisterChildEvent(child, eventName)

Unregisters the children events of the container

Parameters

• child table The child to unregister events for
• eventName string The event name to unregister

Returns

• Container self The container instance