widget: rewrite in kotlin

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/ui/src/main/java/com/wireguard/android/widget/MultiselectableRelativeLayout.kt b/ui/src/main/java/com/wireguard/android/widget/MultiselectableRelativeLayout.kt
new file mode 100644
index 00000000..69ffefc0
--- /dev/null
+++ b/ui/src/main/java/com/wireguard/android/widget/MultiselectableRelativeLayout.kt
@@ -0,0 +1,49 @@
+/*
+ * Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+package com.wireguard.android.widget
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.View
+import android.widget.RelativeLayout
+import com.wireguard.android.R
+
+class MultiselectableRelativeLayout : RelativeLayout {
+    private var multiselected = false
+
+    constructor(context: Context?) : super(context) {}
+    constructor(context: Context?, attrs: AttributeSet?) : super(context, attrs) {}
+    constructor(context: Context?, attrs: AttributeSet?, defStyleAttr: Int) : super(context, attrs, defStyleAttr) {}
+    constructor(context: Context?, attrs: AttributeSet?, defStyleAttr: Int, defStyleRes: Int) : super(context, attrs, defStyleAttr, defStyleRes) {}
+
+    override fun onCreateDrawableState(extraSpace: Int): IntArray {
+        if (multiselected) {
+            val drawableState = super.onCreateDrawableState(extraSpace + 1)
+            View.mergeDrawableStates(drawableState, STATE_MULTISELECTED)
+            return drawableState
+        }
+        return super.onCreateDrawableState(extraSpace)
+    }
+
+    fun setMultiSelected(on: Boolean) {
+        if (!multiselected) {
+            multiselected = true
+            refreshDrawableState()
+        }
+        isActivated = on
+    }
+
+    fun setSingleSelected(on: Boolean) {
+        if (multiselected) {
+            multiselected = false
+            refreshDrawableState()
+        }
+        isActivated = on
+    }
+
+    companion object {
+        private val STATE_MULTISELECTED = intArrayOf(R.attr.state_multiselected)
+    }
+}