Add dialog to import messages

app/src/main/kotlin/com/simplemobiletools/smsmessenger/dialogs/ImportMessagesDialog.kt

@@ -0,0 +1,38 @@
+package com.simplemobiletools.smsmessenger.dialogs
+
+import android.view.ViewGroup
+import androidx.appcompat.app.AlertDialog
+import com.simplemobiletools.commons.extensions.setupDialogStuff
+import com.simplemobiletools.smsmessenger.R
+import com.simplemobiletools.smsmessenger.activities.SimpleActivity
+import com.simplemobiletools.smsmessenger.extensions.config
+import kotlinx.android.synthetic.main.dialog_import_messages.view.import_mms_checkbox
+import kotlinx.android.synthetic.main.dialog_import_messages.view.import_sms_checkbox
+
+class ImportMessagesDialog(
+    private val activity: SimpleActivity,
+    private val path: String,
+    private val callback: (refresh: Boolean) -> Unit,
+) {
+
+    private val config = activity.config
+
+    init {
+        val view = (activity.layoutInflater.inflate(R.layout.dialog_import_messages, null) as ViewGroup).apply {
+            import_sms_checkbox.isChecked = config.importSms
+            import_mms_checkbox.isChecked = config.importMms
+        }
+
+        AlertDialog.Builder(activity)
+            .setPositiveButton(R.string.ok, null)
+            .setNegativeButton(R.string.cancel, null)
+            .create().apply {
+                activity.setupDialogStuff(view, this, R.string.import_messages) {
+                    getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener {
+                        dismiss()
+                        callback.invoke(true)
+                    }
+                }
+            }
+    }
+}