From 82b8b57dc16112b859150696199774fcf06655e1 Mon Sep 17 00:00:00 2001
From: Torsten Grote <t@grobox.de>
Date: Wed, 18 Mar 2020 17:24:02 -0300
Subject: Factor out code from merchant-terminal into common library

---
 .../src/main/java/net/taler/merchantpos/Utils.kt   | 121 ---------------------
 1 file changed, 121 deletions(-)

(limited to 'merchant-terminal/src/main/java/net/taler/merchantpos/Utils.kt')

diff --git a/merchant-terminal/src/main/java/net/taler/merchantpos/Utils.kt b/merchant-terminal/src/main/java/net/taler/merchantpos/Utils.kt
index a0c30d6..578debf 100644
--- a/merchant-terminal/src/main/java/net/taler/merchantpos/Utils.kt
+++ b/merchant-terminal/src/main/java/net/taler/merchantpos/Utils.kt
@@ -16,86 +16,12 @@
 
 package net.taler.merchantpos
 
-import android.content.Context
-import android.text.format.DateUtils.DAY_IN_MILLIS
-import android.text.format.DateUtils.FORMAT_ABBREV_MONTH
-import android.text.format.DateUtils.FORMAT_ABBREV_RELATIVE
-import android.text.format.DateUtils.FORMAT_NO_YEAR
-import android.text.format.DateUtils.FORMAT_SHOW_DATE
-import android.text.format.DateUtils.FORMAT_SHOW_TIME
-import android.text.format.DateUtils.MINUTE_IN_MILLIS
-import android.text.format.DateUtils.formatDateTime
-import android.text.format.DateUtils.getRelativeTimeSpanString
 import android.view.View
-import android.view.View.INVISIBLE
-import android.view.View.VISIBLE
 import androidx.annotation.StringRes
-import androidx.fragment.app.Fragment
-import androidx.lifecycle.LiveData
-import androidx.lifecycle.MediatorLiveData
-import androidx.lifecycle.Observer
-import androidx.navigation.NavController
-import androidx.navigation.NavDirections
-import androidx.navigation.fragment.findNavController
 import com.google.android.material.snackbar.BaseTransientBottomBar.ANIMATION_MODE_FADE
 import com.google.android.material.snackbar.BaseTransientBottomBar.Duration
 import com.google.android.material.snackbar.Snackbar.make
 
-object Utils {
-
-    private const val HEX_CHARS = "0123456789ABCDEF"
-
-    fun hexStringToByteArray(data: String): ByteArray {
-        val result = ByteArray(data.length / 2)
-
-        for (i in data.indices step 2) {
-            val firstIndex = HEX_CHARS.indexOf(data[i])
-            val secondIndex = HEX_CHARS.indexOf(data[i + 1])
-
-            val octet = firstIndex.shl(4).or(secondIndex)
-            result[i.shr(1)] = octet.toByte()
-        }
-        return result
-    }
-
-
-    private val HEX_CHARS_ARRAY = HEX_CHARS.toCharArray()
-
-    @Suppress("unused")
-    fun toHex(byteArray: ByteArray): String {
-        val result = StringBuffer()
-
-        byteArray.forEach {
-            val octet = it.toInt()
-            val firstIndex = (octet and 0xF0).ushr(4)
-            val secondIndex = octet and 0x0F
-            result.append(HEX_CHARS_ARRAY[firstIndex])
-            result.append(HEX_CHARS_ARRAY[secondIndex])
-        }
-        return result.toString()
-    }
-
-}
-
-fun View.fadeIn(endAction: () -> Unit = {}) {
-    if (visibility == VISIBLE) return
-    alpha = 0f
-    visibility = VISIBLE
-    animate().alpha(1f).withEndAction {
-        if (context != null) endAction.invoke()
-    }.start()
-}
-
-fun View.fadeOut(endAction: () -> Unit = {}) {
-    if (visibility == INVISIBLE) return
-    animate().alpha(0f).withEndAction {
-        if (context == null) return@withEndAction
-        visibility = INVISIBLE
-        alpha = 1f
-        endAction.invoke()
-    }.start()
-}
-
 fun topSnackbar(view: View, text: CharSequence, @Duration duration: Int) {
     make(view, text, duration)
         .setAnimationMode(ANIMATION_MODE_FADE)
@@ -106,50 +32,3 @@ fun topSnackbar(view: View, text: CharSequence, @Duration duration: Int) {
 fun topSnackbar(view: View, @StringRes resId: Int, @Duration duration: Int) {
     topSnackbar(view, view.resources.getText(resId), duration)
 }
-
-fun NavDirections.navigate(nav: NavController) = nav.navigate(this)
-
-fun Fragment.navigate(directions: NavDirections) = findNavController().navigate(directions)
-
-fun Long.toRelativeTime(context: Context): CharSequence {
-    val now = System.currentTimeMillis()
-    return if (now - this > DAY_IN_MILLIS * 2) {
-        val flags = FORMAT_SHOW_TIME or FORMAT_SHOW_DATE or FORMAT_ABBREV_MONTH or FORMAT_NO_YEAR
-        formatDateTime(context, this, flags)
-    } else getRelativeTimeSpanString(this, now, MINUTE_IN_MILLIS, FORMAT_ABBREV_RELATIVE)
-}
-
-class CombinedLiveData<T, K, S>(
-    source1: LiveData<T>,
-    source2: LiveData<K>,
-    private val combine: (data1: T?, data2: K?) -> S
-) : MediatorLiveData<S>() {
-
-    private var data1: T? = null
-    private var data2: K? = null
-
-    init {
-        super.addSource(source1) { t ->
-            data1 = t
-            value = combine(data1, data2)
-        }
-        super.addSource(source2) { k ->
-            data2 = k
-            value = combine(data1, data2)
-        }
-    }
-
-    override fun <S : Any?> addSource(source: LiveData<S>, onChanged: Observer<in S>) {
-        throw UnsupportedOperationException()
-    }
-
-    override fun <T : Any?> removeSource(toRemote: LiveData<T>) {
-        throw UnsupportedOperationException()
-    }
-}
-
-/**
- * Use this with 'when' expressions when you need it to handle all possibilities/branches.
- */
-val <T> T.exhaustive: T
-    get() = this
-- 
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