mizo0203/nature-remo-sample-android-kotlin

/*
 * Copyright 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

/**
 * Extension functions for View and subclasses of View.
 */

import android.view.View
import androidx.lifecycle.LifecycleOwner
import androidx.lifecycle.LiveData
import androidx.lifecycle.Observer
import com.google.android.material.snackbar.Snackbar
import com.mizo0203.natureremoapisample.Event

/**
 * Transforms static java function Snackbar.make() to an extension function on View.
 */
fun View.showSnackbar(snackbarText: String, timeLength: Int) {
    Snackbar.make(this, snackbarText, timeLength).run {
        addCallback(object: Snackbar.Callback() {
            override fun onShown(sb: Snackbar?) {
            }

            override fun onDismissed(transientBottomBar: Snackbar?, event: Int) {
            }
        })
        show()
    }
}

/**
 * Triggers a snackbar message when the value contained by snackbarTaskMessageLiveEvent is modified.
 */
fun View.setupSnackbar(
        lifecycleOwner: LifecycleOwner,
        snackbarEvent: LiveData<Event<Int>>,
        timeLength: Int
) {

    snackbarEvent.observe(lifecycleOwner, Observer { event ->
        event.getContentIfNotHandled()?.let {
            showSnackbar(context.getString(it), timeLength)
        }
    })
}