export class KeypressValidation {

    public static isNonValidationKeypress(e): boolean {
        if (e.metaKey || e.ctrlKey) {
            return true;
        }
        let keypress = e.which;
        if (!keypress && e.charCode) {
            keypress = e.charCode;
        }
        if (keypress === 32) {
            return false;
        }
        if (keypress < 33) {
            return true;
        }
        return false;
    }

    public static replaceFullWidthChars(str) {
        if (str === null) {
            str = '';
        }

        let chr,
            idx,
            fullWidth = '\uff10\uff11\uff12\uff13\uff14\uff15\uff16\uff17\uff18\uff19',
            halfWidth = '0123456789',
            value = '',
            chars = str.split('');

        for (let i = 0; i < chars.length; i++) {
            chr = chars[i];
            idx = fullWidth.indexOf(chr);
            if (idx > -1) {
                chr = halfWidth[idx];
            }
            value += chr;
        }
        return value;
    }
}