net.landora.video.preferences.PreferenceObject.java Source code

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Here is the source code for net.landora.video.preferences.PreferenceObject.java

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/**
 * Copyright (C) 2012-2014 Blake Dickie
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
package net.landora.video.preferences;

import org.apache.commons.lang.StringEscapeUtils;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

/**
 *
 * @author bdickie
 */
public class PreferenceObject {

    private Class<?> context;
    private String prefName;
    private String defaultValue;

    public PreferenceObject(Class<?> context, String prefName, String defaultValue) {
        this.context = context;
        this.prefName = prefName;
        this.defaultValue = defaultValue;
    }

    public PreferenceObject(Class<?> context, String prefName, int defaultValue) {
        this(context, prefName, String.valueOf(defaultValue));
    }

    public PreferenceObject(Class<?> context, String prefName, long defaultValue) {
        this(context, prefName, String.valueOf(defaultValue));
    }

    public PreferenceObject(Class<?> context, String prefName, boolean defaultValue) {
        this(context, prefName, String.valueOf(defaultValue));
    }

    public PreferenceObject(Class<?> context, String prefName, String[] defaultValue) {
        this(context, prefName, convertFromStringList(Arrays.asList(defaultValue)));
    }

    public Class<?> getContext() {
        return context;
    }

    public String getPrefName() {
        return prefName;
    }

    public void setString(String value) {
        if (value == null) {
            value = "";
        }

        setCurrentValue(context, prefName, value);
    }

    public void setBoolean(boolean value) {
        setString(String.valueOf(value));
    }

    public void setInt(int value) {
        setString(String.valueOf(value));
    }

    public void setLong(long value) {
        setString(String.valueOf(value));
    }

    protected void setCurrentValue(Class<?> context, String prefName, String value) {
        Preferences.getInstance().setValue(context.getName(), prefName, value);
    }

    protected String getCurrentValue(Class<?> context, String prefName) {
        return Preferences.getInstance().getValue(context.getName(), prefName);
    }

    public String getString() {
        String value = getCurrentValue(context, prefName);
        if (value == null) {
            return defaultValue;
        } else {
            return value;
        }
    }

    public int getInt() {
        return Integer.parseInt(getString());
    }

    public long getLong() {
        return Long.parseLong(getString());
    }

    public boolean getBoolean() {
        return Boolean.parseBoolean(getString());
    }

    public List<String> getStringList() {
        String value = getString();
        return convertToStringList(value);
    }

    public void setStringList(List<String> value) {
        setString(convertFromStringList(value));
    }

    private static String convertFromStringList(List<String> items) {
        StringBuilder builder = new StringBuilder();
        for (String str : items) {
            builder.append(StringEscapeUtils.escapeJava(str));
            builder.append("\t");
        }
        return builder.toString();

    }

    private static List<String> convertToStringList(String value) {
        if (value.isEmpty()) {
            return Collections.EMPTY_LIST;
        }

        List<String> result = new ArrayList<String>();
        int lastIndex = -1;
        int index;
        while ((index = value.indexOf('\t', lastIndex + 1)) != -1) {
            result.add(StringEscapeUtils.unescapeJava(value.substring(lastIndex + 1, index)));
            lastIndex = index;
        }
        return result;
    }
}