1 files changed, 53 insertions, 0 deletions
diff --git a/adapter/src/main/kotlin/ca/allanwang/kau/adapters/RepeatedClickListener.kt b/adapter/src/main/kotlin/ca/allanwang/kau/adapters/RepeatedClickListener.kt
new file mode 100644
index 0000000..d864a55
--- /dev/null
+++ b/adapter/src/main/kotlin/ca/allanwang/kau/adapters/RepeatedClickListener.kt
@@ -0,0 +1,53 @@
+package ca.allanwang.kau.adapters
+
+import android.support.annotation.IntRange
+import android.view.View
+import com.mikepenz.fastadapter.FastAdapter
+import com.mikepenz.fastadapter.IAdapter
+import com.mikepenz.fastadapter.IItem
+import com.mikepenz.fastadapter.listeners.OnClickListener
+
+/**
+ * Created by Allan Wang on 26/12/17.
+ */
+fun <Item : IItem<*, *>> FastAdapter<Item>.withOnRepeatedClickListener(count: Int,
+                                                                       duration: Long,
+                                                                       event: OnClickListener<Item>) =
+        withOnClickListener(RepeatedClickListener(count, duration, event))
+
+/**
+ * Registers and skips each click until the designated [count] clicks are triggered,
+ * each within [duration] from each other.
+ * Only then will the [event] be fired, and everything will be reset.
+ */
+private class RepeatedClickListener<Item : IItem<*, *>>(
+        @IntRange(from = 1) val count: Int,
+        @IntRange(from = 1) val duration: Long,
+        val event: OnClickListener<Item>) : OnClickListener<Item> {
+
+    init {
+        if (count <= 0)
+            throw IllegalArgumentException("RepeatedClickListener's count must be > 1")
+        if (duration <= 0)
+            throw IllegalArgumentException("RepeatedClickListener's duration must be > 1L")
+    }
+
+    private var chain = 0
+    private var time = -1L
+
+    override fun onClick(v: View, adapter: IAdapter<Item>, item: Item, position: Int): Boolean {
+        val now = System.currentTimeMillis()
+        if (time - now < duration)
+            chain++
+        else
+            chain = 0
+        time = now
+        if (chain == count) {
+            chain = 0
+            time = -1
+            event.onClick(v, adapter, item, position)
+            return true
+        }
+        return false
+    }
+}
+\ No newline at end of file