Light-code-editor NPM

Lightweight Decorator for Textareas

yarn add light-code-editor
# or
npm install light-code-editor

how to user

include styles "light-code-editor/styles.css"
create parser

const genericParser = new Parser({
  whitespace: /\s+/,
  comment: /\/\*([^\*]|\*[^\/])*(\*\/?)?|(\/\/|#)[^\r\n]*/,
  string: /"(\\.|[^"\r\n])*"?|'(\\.|[^'\r\n])*'?/,
  number: /0x[\dA-Fa-f]+|-?(\d+\.?\d*|\.\d+)/,
  keyword: /(and|as|case|catch|class|const|def|delete|die|do|else|elseif|esac|exit|extends|false|fi|finally|for|foreach|function|global|if|new|null|or|private|protected|public|published|resource|return|self|static|struct|switch|then|this|throw|true|try|var|void|while|xor)(?!\w|=)/,
  variable: /[\$\%\@](\->|\w)+(?!\w)|\${\w*}?/,
  define: /[$A-Z_a-z0-9]+/,
  op: /[\+\-\*\/=<>!]=?|[\(\)\{\}\[\]\.\|]/,
  other: /\S+/
});

style your items

.ltd .comment {
  color: red;
}

.ltd .keyword {
  color: black;
}

var textarea = $("codeArea");
textarea.value = "<!DOCTYPE html>\n<html>\n\t" + "\n</html>";
decorator = new TextareaDecorator(textarea, parser);

var textarea = $("codeArea");
textarea.value = "<!DOCTYPE html>\n<html>\n\t" + "\n</html>";
decorator = new TextareaDecorator(textarea, parser);
bindKey(textarea, {
  "Ctrl-1": e => {
    insertAtCursor("your  superb text", el);
    decorator.update();
  },
  "Shift-Ctrl-2": e => {
    alert("hello");
  }
});

see detailed examples in stories

In browser live syntax highlighting

JS

CSS

API

TextareaDecorator

new TextareaDecorator( textarea, parser ) Converts a HTML textarea element into an auto highlighting TextareaDecorator. parser is used to determine how to subdivide and style the content. parser can be any object which defines the tokenize and identify methods as described in the Parser API below.
.input The input layer of the LDT, a textarea element.
.output The output layer of the LDT, a pre element.
.update() Updates the highlighting of the LDT. It is automatically called on user input. You shouldn't need to call this unless you programmatically changed the contents of the textarea.

Parser

new Parser( [rules], [i] ) Creates a parser. rules is an object whose keys are CSS classes and values are the regular expressions which match each token. i is a boolean which determines if the matching is case insensitive, it defaults to false.
.add( rules ) Adds a mapping of CSS class names to regular expressions.
.tokenize( string ) Splits string into an array of tokens as defined by .rules.
.identify( string ) Finds the CSS class name associated with the token string.

Keybinder

This is a singleton, you do not need to instantiate this object.

.bindKey( element, [keymap] ) Adds Keybinder methods to element, optionally setting the element's keymap.

SelectHelper

This is a singleton, you do not need to instantiate this object.

.add( element ) Adds SelectHelper methods to element.
element.insertAtCursor( string ) Inserts string into the element before the current cursor position.

@everything-registry/sub-chunk-2070 @zalastax/nolb-light-

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