TextBox

A multi-line text editor component with cursor support and text manipulation features

Extends: VisualElement

Properties

Property	Type	Default	Description
lines	table	{}	Array of text lines
cursorX	number	1	Cursor X position
cursorY	number	1	Cursor Y position (line number)
scrollX	number	0	Horizontal scroll offset
scrollY	number	0	Vertical scroll offset
editable	boolean	true	Whether text can be edited
syntaxPatterns	table	{}	Syntax highlighting patterns
cursorColor	number	nil	Color of the cursor
autoPairEnabled	boolean	true	Whether automatic bracket/quote pairing is enabled
autoPairCharacters	table	{	["("]=")", ["["]="]", ["{"]="}", ['"']='"', [''']=''', ['']=''} Mapping of opening to closing characters for auto pairing
autoPairSkipClosing	boolean	true	Skip inserting a closing char if the same one is already at cursor
autoPairOverType	boolean	true	When pressing a closing char that matches the next char, move over it instead of inserting
autoPairNewlineIndent	boolean	true	On Enter between matching braces, create blank line and keep closing aligned
autoCompleteEnabled	boolean	false	Whether autocomplete suggestions are enabled
autoCompleteItems	table	{}	List of suggestions used when no provider is supplied
autoCompleteProvider	function	nil	Optional suggestion provider returning a list for the current prefix
autoCompleteMinChars	number	1	Minimum characters required before showing suggestions
autoCompleteMaxItems	number	6	Maximum number of visible suggestions
autoCompleteCaseInsensitive	boolean	true	Whether suggestions should match case-insensitively
autoCompleteTokenPattern	string	"[%w_]+"	Pattern used to extract the current token for suggestions
autoCompleteOffsetX	number	0	Horizontal offset applied to the popup frame relative to the TextBox
autoCompleteOffsetY	number	1	Vertical offset applied to the popup frame relative to the TextBox bottom edge
autoCompleteZOffset	number	1	Z-index offset applied to the popup frame
autoCompleteMaxWidth	number	0	Maximum width of the autocomplete popup (0 uses the textbox width)
autoCompleteShowBorder	boolean	true	Whether to render a character border around the popup
autoCompleteBorderColor	color	black	Color of the popup border when enabled
autoCompleteBackground	color	lightGray	Background color of the suggestion popup
autoCompleteForeground	color	black	Foreground color of the suggestion popup
autoCompleteSelectedBackground	color	gray	Background color for the selected suggestion
autoCompleteSelectedForeground	color	white	Foreground color for the selected suggestion
autoCompleteAcceptOnEnter	boolean	true	Whether pressing Enter accepts the current suggestion
autoCompleteAcceptOnClick	boolean	true	Whether clicking a suggestion accepts it immediately
autoCompleteCloseOnEscape	boolean	true	Whether pressing Escape closes the popup

Functions

Method	Returns	Description
TextBox:addSyntaxPattern	TextBox	Adds a new syntax highlighting pattern
TextBox:removeSyntaxPattern	TextBox	Removes a syntax pattern by index (1-based)
TextBox:clearSyntaxPatterns	TextBox	Clears all syntax highlighting patterns
TextBox:updateViewport	TextBox	Updates the viewport to keep the cursor in view
TextBox:setText	TextBox	Sets the text of the TextBox
TextBox:getText	string	Gets the text of the TextBox

TextBox:addSyntaxPattern(pattern, color)

Adds a new syntax highlighting pattern

Parameters

• pattern string The regex pattern to match
• color number The color to apply

Returns

• TextBox self The TextBox instance

TextBox:removeSyntaxPattern(index)

Removes a syntax pattern by index (1-based)

Parameters

• index number The index of the pattern to remove

Returns

• TextBox self

TextBox:clearSyntaxPatterns()

Clears all syntax highlighting patterns

Returns

• TextBox self

TextBox:updateViewport()

Updates the viewport to keep the cursor in view

Returns

• TextBox self The TextBox instance

TextBox:setText(text)

Sets the text of the TextBox

Parameters

• text string The text to set

Returns

• TextBox self The TextBox instance

TextBox:getText()

Gets the text of the TextBox

Returns

• string text The text of the TextBox