import { testFlag } from '../../../core/flags';

export const enum Modifier {
    None    = 0x00,
    Shift   = 0x02,
    Control = 0x04,
    Alt     = 0x08,
    Meta    = 0x10,
    Keypad  = 0x20
}

export class SyntheticEvent {
    modifiers: Modifier;

    constructor(modifiers = Modifier.None) {
        this.modifiers = modifiers;
    }

    className(): string {
        return (<typeof SyntheticEvent>this.constructor).className;
    }

    testModifier(flag: number) {
        return testFlag(this.modifiers, flag);
    }

    static create(modifiers?: Modifier) {
        return new SyntheticEvent(modifiers);
    }

    static readonly className: string = 'SyntheticEvent';
}