core.ui.textedit

This module provides a text editor component for the terminal UI system.

TIP

To use this module, you need to import it first: import("core.ui.textedit")

NOTE

The UI module is primarily used for xmake's internal xmake f --menu menu-based visual configuration. It provides basic UI components that can also be used by users to implement their own terminal UIs.

The textedit module extends textarea and provides a text editor with editable text. It supports multi-line editing, cursor display, and keyboard input.

textedit:new

• Create a new text editor instance

Function Prototype

API

textedit:new(name: <string>, bounds: <rect>, text?: <string>)

Parameter Description

Parameter	Description
name	Required. Text editor name string
bounds	Required. Text editor bounds rectangle
text	Optional. Initial text content

Return Value

Type	Description
textedit	Returns a text editor instance

Usage

Create a text editor:

import("core.ui.textedit")
import("core.ui.rect")

local textedit = textedit:new("editor", rect{10, 5, 50, 10}, "Initial text")

textedit:text_set

• Set text content

Function Prototype

API

textedit:text_set(text: <string>)

Parameter Description

Parameter	Description
text	Required. Text content to set

Return Value

Type	Description
textedit	Returns the text editor instance (for chaining)

Usage

Set or update text content:

textedit:text_set("New text content")

After setting text, it automatically scrolls to the bottom and displays the cursor.

textedit:on_event

• Handle keyboard events

Function Prototype

API

textedit:on_event(e: <event>)

Parameter Description

Parameter	Description
e	Required. Event object

Return Value

Type	Description
boolean	Returns true if the event was handled, otherwise returns false

Usage

The text editor automatically handles the following keyboard events:

• Regular characters: Insert characters
• Enter: Insert newline (when multi-line mode is enabled)
• Backspace: Delete character before cursor (supports UTF-8 characters)
• Ctrl+V: Paste clipboard content
• Up/Down: Scroll text

Here is a complete text editor usage example:

import("core.ui.textedit")
import("core.ui.window")
import("core.ui.rect")
import("core.ui.application")

local demo = application()

function demo:init()
    application.init(self, "demo")
    self:background_set("blue")
    
    -- Create window
    local win = window:new("main", rect{1, 1, self:width() - 1, self:height() - 1}, "Text Editor Demo")
    
    -- Create text editor
    local editor = textedit:new("editor", rect{2, 2, 50, 15}, "Enter text here...")
    
    -- Set text attribute
    editor:textattr_set("white on blue")
    
    -- Add text editor to window panel
    local panel = win:panel()
    panel:insert(editor)
    
    -- Select text editor
    panel:select(editor)
    
    self:insert(win)
    self._win = win
end

function demo:on_resize()
    self._win:bounds_set(rect{1, 1, self:width() - 1, self:height() - 1})
    application.on_resize(self)
end

function main(...)
    demo:run(...)
end