rtdc.web.client.impl.GwtStorage.java Source code

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Here is the source code for rtdc.web.client.impl.GwtStorage.java

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/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 Olivier Clermont, Jonathan Ermel, Mathieu Fortin-Boulay, Philippe Legault & Nicolas Mnard
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package rtdc.web.client.impl;

import com.google.gwt.http.client.URL;
import com.google.gwt.user.client.Cookies;
import rtdc.core.impl.Storage;

/**
 * GWT abstraction of a persistence mechanism (cookies)
 */
public class GwtStorage implements Storage {

    private static GwtStorage INSTANCE;

    private GwtStorage() {
        Cookies.setUriEncode(false);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void add(String key, String data) {
        Cookies.setCookie(key, data);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public String retrieve(String key) {
        return Cookies.getCookie(key);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void remove(String key) {
        Cookies.removeCookie(key);
    }

    public static GwtStorage get() {
        if (INSTANCE == null)
            INSTANCE = new GwtStorage();
        return INSTANCE;
    }
}