AltRepParam.ts 2.45 KB
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/*
 * lib-ical
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 * Copyright (C) 2017 Mark Stenglein
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 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
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import Parameter from "./Parameter";

/**
 * Implements the Alternate text representation parameter
 *
 *  Format Definition: This property parameter is defined by the
 *    following notation:
 *
 *      altrepparam = "ALTREP" "=" DQUOTE uri DQUOTE
 *
 * This parameter specifies a URI that points to an alternate representation
 *   for a textual property value.
 *
 * A property specifying this parameter MUST also include a value that reflects
 *   the default representation of the text value.
 *
 * The URI parameter value MUST be specified in a quoted-string.
 *
 * @author Mark Stenglein <mark@stengle.in>
 */
export default class AltRepParam extends Parameter {
    private _uri: string;

    constructor(uri: string) {
        if (!uri) {
            throw new TypeError("uri must be defined for AltRepParam");
        }
        else {
            super("ALTREP", []);
            this.uri = uri;
            this.reqContentValue = true;
        }
    }

    get uri(): string {
        return this._uri;
    }

    /**
     * Allows you to set the parameter with either a quoted-string or a
     *   QSAFE-CHAR, which will be converted into a quoted-string
     *
     * @author Mark Stenglein <mark@stengle.in>
     * @since 0.1.0
     * @param newUri string value of the new URI which is to be validated
     * @returns void
     * @access public
     */
    set uri(newUri: string) {
        if (Parameter.isQSafeChar(newUri)) {
            this._uri = newUri;
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            this.paramValues = [`\""${this.uri}\"`];
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        }
        else if (Parameter.isQuotedString(newUri)) {
            this._uri = newUri;
            this.paramValues = [newUri];
        }
        else {
            throw new TypeError("URI must be QSAFE-CHAR or quoted-string");
        }
    }
}