Debounce clicks on list items in the main screen

app/src/main/java/com/afollestad/nocknock/adapter/ServerAdapter.kt

@@ -12,6 +12,7 @@ import androidx.recyclerview.widget.RecyclerView
 import com.afollestad.nocknock.R
 import com.afollestad.nocknock.data.ServerModel
 import com.afollestad.nocknock.data.textRes
+import com.afollestad.nocknock.utilities.ui.onDebouncedClick
 import kotlinx.android.synthetic.main.list_item_server.view.iconStatus
 import kotlinx.android.synthetic.main.list_item_server.view.textInterval
 import kotlinx.android.synthetic.main.list_item_server.view.textName
@@ -24,10 +25,12 @@ typealias Listener = (model: ServerModel, longClick: Boolean) -> Unit
 class ServerVH constructor(
   itemView: View,
   private val adapter: ServerAdapter
-) : RecyclerView.ViewHolder(itemView), View.OnClickListener, View.OnLongClickListener {
+) : RecyclerView.ViewHolder(itemView), View.OnLongClickListener {
 
   init {
-    itemView.setOnClickListener(this)
+    itemView.onDebouncedClick {
+      adapter.performClick(adapterPosition, false)
+    }
     itemView.setOnLongClickListener(this)
   }
 
@@ -46,10 +49,6 @@ class ServerVH constructor(
     itemView.textInterval.text = model.intervalText()
   }
 
-  override fun onClick(view: View) {
-    adapter.performClick(adapterPosition, false)
-  }
-
   override fun onLongClick(view: View): Boolean {
     adapter.performClick(adapterPosition, true)
     return false

utilities/src/main/java/com/afollestad/nocknock/utilities/ui/DebouncedOnClickListener.kt

@@ -0,0 +1,45 @@
+/*
+ * Licensed under Apache-2.0
+ *
+ * Designed and developed by Aidan Follestad (@afollestad)
+ */
+package com.afollestad.nocknock.utilities.ui
+
+import android.view.View
+import java.lang.System.currentTimeMillis
+
+private const val DEFAULT_DEBOUNCE_INTERVAL = 750L
+
+/** @author Aidan Follestad (@afollestad) */
+abstract class DebouncedOnClickListener(
+  private val delayBetweenClicks: Long = DEFAULT_DEBOUNCE_INTERVAL
+) : View.OnClickListener {
+
+  private var lastClickTimestamp = -1L
+
+  @Deprecated(
+      message = "onDebouncedClick should be overridden instead.",
+      replaceWith = ReplaceWith("onDebouncedClick(v)")
+  )
+  override fun onClick(v: View) {
+    val now = currentTimeMillis()
+    if (lastClickTimestamp == -1L || now >= (lastClickTimestamp + delayBetweenClicks)) {
+      onDebouncedClick(v)
+    }
+    lastClickTimestamp = now
+  }
+
+  abstract fun onDebouncedClick(v: View)
+}
+
+/** @author Aidan Follestad (@afollestad) */
+fun View.onDebouncedClick(
+  delayBetweenClicks: Long = DEFAULT_DEBOUNCE_INTERVAL,
+  click: (view: View) -> Unit
+) {
+  setOnClickListener(object : DebouncedOnClickListener(delayBetweenClicks) {
+    override fun onDebouncedClick(v: View) {
+      click(v)
+    }
+  })
+}