import { EditorState, Command } from 'prosemirror-state';
import { RteInstanceImpl } from '../instance';
import { RteFeatureImpl, SchemaContribution, ToolbarItemContribution } from '../feature';
export interface FontSizeOption {
    size: string;
    label: string;
}
export interface FontSizeOnBlock {
    node: string;
    defaultSize?: string;
}
export type RteFontSizePickerConfig = {
    options: FontSizeOption[];
    onBlocks?: FontSizeOnBlock[];
};
declare const mixedFontSize: unique symbol;
type MixedFontSize = typeof mixedFontSize;
type SelectionFontSize = string | MixedFontSize | null;
export declare class RteFontSizePickerFeatureImpl extends RteFeatureImpl {
    protected config: RteFontSizePickerConfig;
    name: string;
    fontSizes: FontSizeOption[];
    defaultFontSizeForNode?: Record<string, string | null>;
    constructor(config: RteFontSizePickerConfig);
    getTextblockMarks(): {
        priority: number;
        featureName: string;
        value: {
            markName: string;
        };
    }[];
    getSchema(): SchemaContribution[];
    getPlugins(): {
        priority: number;
        featureName: string;
        value: import('prosemirror-state').Plugin<any>;
    }[];
    getToolbarItems(rte: RteInstanceImpl): ToolbarItemContribution[];
    getFontSizeFromSelection(state: EditorState): SelectionFontSize;
    setFontSize(size: string): Command;
    adjustFontSize(adjustment: -1 | 1): Command;
}
export declare const RteFontSizePickerFeature: {
    new (config: RteFontSizePickerConfig): {};
};
export {};