/**
 * Copyright (C) 2010-2011 eBusiness Information, Excilys Group
 *
 * 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 com.googlecode.androidannotations.api.sharedpreferences;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;

/**
 * Reflection utils to call SharedPreferences$Editor.apply when possible,
 * falling back to commit when apply isn't available.
 */
abstract class SharedPreferencesCompat {

	private SharedPreferencesCompat() {
	}

	private static final Method sApplyMethod = findApplyMethod();

	private static Method findApplyMethod() {
		try {
			Class<Editor> cls = SharedPreferences.Editor.class;
			return cls.getMethod("apply");
		} catch (NoSuchMethodException unused) {
			// fall through
		}
		return null;
	}

	public static void apply(SharedPreferences.Editor editor) {
		if (sApplyMethod != null) {
			try {
				sApplyMethod.invoke(editor);
				return;
			} catch (InvocationTargetException unused) {
				// fall through
			} catch (IllegalAccessException unused) {
				// fall through
			}
		}
		editor.commit();
	}
}
