org.cloudfoundry.android.cfdroid.targets.TargetsPreferences.java Source code

Introduction

Here is the source code for org.cloudfoundry.android.cfdroid.targets.TargetsPreferences.java

Source

/*
 * Copyright 2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.cloudfoundry.android.cfdroid.targets;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import org.springframework.util.StringUtils;

import android.annotation.TargetApi;
import android.content.SharedPreferences;
import android.os.Build;

import com.google.inject.Inject;

public class TargetsPreferences {

    private static final String TARGETS_PREF_KEY = "targets";

    private static final Set<String> DEFAULT_TARGETS;
    static {
        DEFAULT_TARGETS = new HashSet<String>();
        DEFAULT_TARGETS.add("https://api.cloudfoundry.com|CloudFoundry");
        // DEFAULT_TARGETS.add("http://api.eu01.aws.af.cm|AppFog AWS EU");
    }
    private final SharedPreferences sharedPreferences;

    @Inject
    public TargetsPreferences(SharedPreferences sharedPreferences) {
        this.sharedPreferences = sharedPreferences;
    }

    public List<CloudTarget> fromPrefs() {
        List<CloudTarget> targets = new ArrayList<CloudTarget>();
        Set<String> raw = safeGetStringSet(TARGETS_PREF_KEY, DEFAULT_TARGETS);
        for (String r : raw) {
            targets.add(CloudTarget.parse(r));
        }
        return targets;
    }

    @TargetApi(11)
    private Set<String> safeGetStringSet(String key, Set<String> defaultValues) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            return sharedPreferences.getStringSet(key, defaultValues);
        } else {
            String big = sharedPreferences.getString(key + "__", null);
            if (big == null) {
                return defaultValues;
            } else {
                Set<String> val = new HashSet<String>();
                for (String s : big.split("\\|\\|")) {
                    val.add(s);
                }
                return val;
            }
        }
    }

    @TargetApi(11)
    private void safePutStringSet(String key, Set<String> values) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            sharedPreferences.edit().putStringSet(key, values).commit();
        } else {
            String big = StringUtils.collectionToDelimitedString(values, "||");
            sharedPreferences.edit().putString(key + "__", big).commit();
        }
    }

    public void toPrefs(List<CloudTarget> targets) {

        Set<String> raw = new HashSet<String>();
        for (CloudTarget target : targets) {
            raw.add(target.toPref());
        }
        safePutStringSet(TARGETS_PREF_KEY, raw);
    }
}