mizo0203/nature-remo-sample-android-kotlin

/*
 * Copyright (C) 2017 The Android Open Source Project
 *
 * 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.mizo0203.natureremoapisample.util

/**
 * Various extension functions for AppCompatActivity.
 */

import androidx.appcompat.app.AppCompatActivity
import androidx.fragment.app.Fragment
import androidx.fragment.app.FragmentManager
import androidx.fragment.app.FragmentTransaction
import androidx.lifecycle.ViewModel
import androidx.lifecycle.ViewModelProviders
import com.mizo0203.natureremoapisample.ViewModelFactory

/**
 * The `fragment` is added to the container view with id `frameId`. The operation is
 * performed by the `fragmentManager`.
 */
fun AppCompatActivity.replaceFragmentInActivity(fragment: Fragment, frameId: Int) {
    supportFragmentManager.transact {
        replace(frameId, fragment)
    }
}

fun <T : ViewModel> AppCompatActivity.obtainViewModel(viewModelClass: Class<T>) =
        ViewModelProviders.of(this, ViewModelFactory.getInstance()).get(viewModelClass)

/**
 * Runs a FragmentTransaction, then calls commit().
 */
private inline fun FragmentManager.transact(action: FragmentTransaction.() -> Unit) {
    beginTransaction().apply {
        action()
    }.commit()
}