import { BasicExtension, PrismEditor } from '../../index.js';
export interface AutoComplete extends BasicExtension {
    /**
     * Starts a completion query.
     * @param explicit When a query is started by this extension, `explicit` gets set to
     * `true` whenever the query was started with Ctrl+Space, and `false` if the query was
     * started implicitly while typing.
     */
    startQuery(explicit?: boolean): void;
    /**
     * Inserts a completion option, replacing the text in the document between `start` and
     * `end` with the `label` (or `insert` if present) property of the completion. If the
     * completion has tab stops, these are displayed and can be selected by the user.
     *
     * This is very useful to insert snippets since this method will preserve current
     * indentation on new lines and replace tabs with spaces when `options.insertSpaces`
     * isn't set to `false`.
     *
     * @param completion The completion to insert.
     * @param start Starting position of the text replaced by the completion.
     * @param end Ending position of the text replaced by the completion. Defaults to
     * `start`.
     */
    insertCompletion(completion: Completion, start: number, end?: number): void;
}
export interface Completion {
    /**
     * Label of the option. The label is displayed in the option and used to filter and sort
     * options. By default, this is the text inserted when the option is selected.
     */
    label: string;
    /**
     * Can be used to adjust how the completion is ranked compared to other options.
     * A positive number moves it up the list, while a negative one moves it down.
     */
    boost?: number;
    /** Optional, short piece of information displayed after the label. */
    detail?: string;
    /**
     * Name of the icon shown before the label. This name is appended to the class
     * `pce-ac-icon-`, so i.e. `.pce-ac-icon-variable` can be used to style icons with the
     * name `variable`.
     *
     * The icon element also gets it color set to the CSS variable `--pce-ac-icon-` followed
     * by the icon's name. Use these CSS variables to set different colors for different
     * icons.
     *
     * `prism-code-editor/autocomplete-icons.css` adds 14 icons from VSCode: `class`,
     * `constant`, `enum`, `event`, `function`, `interface`, `keyword`, `namespace`,
     * `parameter`, `property`, `snippet`, `text`, `unit`, and `variable`. You can import
     * your own icons instead.
     *
     * Defaults to `"variable"`
     */
    icon?: "class" | "constant" | "enum" | "event" | "function" | "interface" | "keyword" | "namespace" | "parameter" | "property" | "snippet" | "text" | "unit" | "variable" | (string & {});
    /**
     * Text to insert when the completion is selected. Tabs are replaced with spaces when
     * `options.insertSpaces` isn't set to `false`. The current indentation is preserved
     * when line feeds (\n) are found.
     *
     * If omitted, the inserted text defaults to `label`.
     */
    insert?: string;
    /**
     * Array of ranges. Each even index defines the start of a range. The subsequent index
     * defines the end of that range. The ranges are relative to the start of the inserted
     * text. The first range is selected initially.
     *
     * If there are multiple ranges, the Tab key can be used to select the next tab stop.
     * Once the final tab stop is selected or Escape is pressed, the tab stops disappear.
     *
     * The ranges must not overlap.
     *
     * If the last range only contains one number, the second defaults to the first.
     */
    tabStops?: number[];
    /**
     * If this option is selected and the user types a character present in this string,
     * then the option is inserted right before the character is typed.
     */
    commitChars?: string;
}
export interface CompletionResult {
    /** The start of the range that's being completed. */
    from: number;
    /**
     * The end of the range that will be replaced when one of the options is selected.
     * This is not used when sorting or filtering the options. Defaults to `selectionEnd`.
     */
    to?: number;
    /** The completions returned by the source. */
    options: Completion[];
}
export type CompletionSource<T extends object = object> = (context: CompletionContext & T, editor: PrismEditor) => CompletionResult | undefined | null;
export interface CompletionContext {
    /** The code before the cursor. */
    before: string;
    /** The line before the cursor. */
    lineBefore: string;
    /** The cursor's position in the document. */
    pos: number;
    /** The language at the cursor's position. */
    language: string;
    /** True if the completion was started explicitly with Ctrl+Space. False otherwise. */
    explicit: boolean;
}
/**
 * Completion definition for a language.
 *
 * The context property can be used to add extra properties to the context
 * passed to the completion sources. This is useful to do certain computations once
 * instead of once for each source.
 */
export type CompletionDefinition<T extends object> = {
    context?: null;
    sources: CompletionSource[];
} | {
    context(context: CompletionContext, editor: PrismEditor): T;
    sources: CompletionSource<T>[];
};
export type AutoCompleteConfig = {
    /** Function used to filter and rank options. */
    filter: CompletionFilter;
    /**
     * If `true`, the tooltip will be placed above the cursor when there's space.
     * Defaults to `false`.
     */
    preferAbove?: boolean;
    /**
     * Whether the tooltip should close when the `textarea` loses focus. Defaults to `true`.
     */
    closeOnBlur?: boolean;
    /**
     * If `true`, the tooltip will only be shown when explicitly opened using Ctrl+Space.
     * Defaults to `false`.
     */
    explicitOnly?: boolean;
};
/**
 * Function that matches an option against the query. If the option matches the query,
 * the function returns an array containing two entries:
 * 1) The score of the match. A higher score means a better match.
 * 2) An array of matched ranges. Each even index defines the start of a range. The
 * subsequent index defines the end of that range.
 */
export type CompletionFilter = (query: string, option: string) => [number, number[]] | undefined;
/**
 * Object mapping attribute names to a list of values for that attribute. For attributes
 * without a predifined list of possible values, the value should be `null`.
 */
export type AttributeConfig = {
    [attrName: string]: null | string[];
};
/**
 * Object mapping tag names to completable attributes for that tag.
 */
export type TagConfig = {
    [tagName: string]: AttributeConfig;
};