/**
 * @license Copyright (c) 2003-2026, CKSource Holding sp. z o.o. All rights reserved.
 * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-licensing-options
 */
/**
 * @module code-block/codeblockconfig
 */
/**
 * The configuration of the {@link module:code-block/codeblock~CodeBlock code block feature}.
 *
 * ```ts
 * ClassicEditor
 * 	.create( editorElement, {
 * 		codeBlock:  ... // The code block feature configuration.
 * 	} )
 * 	.then( ... )
 * 	.catch( ... );
 * ```
 *
 * See {@link module:core/editor/editorconfig~EditorConfig all editor options}.
 */
export interface CodeBlockConfig {
    /**
     * The list of code languages available in the user interface to choose for a particular code block.
     *
     * The language of the code block is represented as a CSS class (by default prefixed by "language-") set on the
     * `<code>` element, both when editing and in the editor data. The CSS class associated with the language
     * can be used by third–party code syntax highlighters to detect and apply the correct highlighting.
     *
     * For instance, this language configuration:
     *
     * ```ts
     * ClassicEditor
     * 	.create( document.querySelector( '#editor' ), {
     * 		codeBlock: {
     * 			languages: [
     * 				// ...
     * 				{ language: 'javascript', label: 'JavaScript' },
     * 				// ...
     * 			]
     * 		}
     * 	} )
     * 	.then( ... )
     * 	.catch( ... );
     * ```
     *
     * will result in the following structure of JavaScript code blocks in the editor editing and data:
     *
     * ```html
     * <pre><code class="language-javascript">window.alert( 'Hello world!' )</code></pre>
     * ```
     *
     * You can customize the CSS class by specifying an optional `class` property in the language definition.
     * You can set **multiple classes** but **only the first one** will be used as defining language class:
     *
     * ```ts
     * ClassicEditor
     * 	.create( document.querySelector( '#editor' ), {
     * 		codeBlock: {
     * 			languages: [
     * 				// Do not render the CSS class for the plain text code blocks.
     * 				{ language: 'plaintext', label: 'Plain text', class: '' },
     *
     * 				// Use the "php-code" class for PHP code blocks.
     * 				{ language: 'php', label: 'PHP', class: 'php-code' },
     *
     * 				// Use the "js" class for JavaScript code blocks.
     * 				// Note that only the first ("js") class will determine the language of the block when loading data.
     * 				{ language: 'javascript', label: 'JavaScript', class: 'js javascript js-code' },
     *
     * 				// Python code blocks will have the default "language-python" CSS class.
     * 				{ language: 'python', label: 'Python' }
     * 			]
     * 		}
     * } )
     * .then( ... )
     * .catch( ... );
     * ```
     *
     * The default value of the language configuration is as follows:
     *
     * ```ts
     * languages: [
     * 	{ language: 'plaintext', label: 'Plain text' }, // The default language.
     * 	{ language: 'c', label: 'C' },
     * 	{ language: 'cs', label: 'C#' },
     * 	{ language: 'cpp', label: 'C++' },
     * 	{ language: 'css', label: 'CSS' },
     * 	{ language: 'diff', label: 'Diff' },
     * 	{ language: 'go', label: 'Go' },
     * 	{ language: 'html', label: 'HTML' },
     * 	{ language: 'java', label: 'Java' },
     * 	{ language: 'javascript', label: 'JavaScript' },
     * 	{ language: 'php', label: 'PHP' },
     * 	{ language: 'python', label: 'Python' },
     * 	{ language: 'ruby', label: 'Ruby' },
     * 	{ language: 'typescript', label: 'TypeScript' },
     * 	{ language: 'xml', label: 'XML' }
     * ]
     * ```
     *
     * **Note**: The first language defined in the configuration is considered the default one. This means it will be
     * applied to code blocks loaded from the data that have no CSS `class` specified (or no matching `class` in the configuration).
     * It will also be used when creating new code blocks using the main UI button. By default it is "Plain text".
     */
    languages?: Array<CodeBlockLanguageDefinition>;
    /**
     * A sequence of characters inserted or removed from the code block lines when its indentation
     * is changed by the user, for instance, using <kbd>Tab</kbd> and <kbd>Shift</kbd>+<kbd>Tab</kbd> keys.
     *
     * The default value is a single tab character ("	", `\u0009` in Unicode).
     *
     * This configuration is used by `indentCodeBlock` and `outdentCodeBlock` commands (instances of
     * {@link module:code-block/indentcodeblockcommand~IndentCodeBlockCommand}).
     *
     * **Note**: Setting this configuration to `false` will disable the code block indentation commands
     * and associated keystrokes.
     *
     */
    indentSequence?: string;
}
/**
 * The code block language descriptor. See {@link module:code-block/codeblockconfig~CodeBlockConfig#languages} to learn more.
 *
 * ```ts
 * {
 * 	language: 'javascript',
 * 	label: 'JavaScript'
 * }
 * ```
 */
export interface CodeBlockLanguageDefinition {
    /**
     * The name of the language that will be stored in the model attribute. Also, when `class`
     * is not specified, it will be used to create the CSS class associated with the language (prefixed by "language-").
     */
    language: string;
    /**
     * The human–readable label associated with the language and displayed in the UI.
     */
    label: string;
    /**
     * The CSS class associated with the language. When not specified the `language`
     * property is used to create a class prefixed by "language-".
     */
    class?: string;
}