create the Export Contacts dialog

app/build.gradle

@@ -41,7 +41,7 @@ ext {
 }
 
 dependencies {
-    implementation 'com.simplemobiletools:commons:3.7.2'
+    implementation 'com.simplemobiletools:commons:3.7.3'
     implementation 'joda-time:joda-time:2.9.9'
 
     debugImplementation "com.squareup.leakcanary:leakcanary-android:$leakCanaryVersion"

app/src/main/kotlin/com/simplemobiletools/contacts/activities/MainActivity.kt

@@ -17,6 +17,7 @@ import com.simplemobiletools.contacts.BuildConfig
 import com.simplemobiletools.contacts.R
 import com.simplemobiletools.contacts.adapters.ViewPagerAdapter
 import com.simplemobiletools.contacts.dialogs.ChangeSortingDialog
+import com.simplemobiletools.contacts.dialogs.ExportContactsDialog
 import com.simplemobiletools.contacts.dialogs.FilterContactSourcesDialog
 import com.simplemobiletools.contacts.dialogs.ImportContactsDialog
 import com.simplemobiletools.contacts.extensions.config
@@ -279,7 +280,9 @@ class MainActivity : SimpleActivity(), RefreshContactsListener {
 
     private fun exportContacts() {
         FilePickerDialog(this, pickFile = false, showFAB = true) {
+            ExportContactsDialog(this, it) { file, contactSources ->
 
+            }
         }
     }
 

app/src/main/kotlin/com/simplemobiletools/contacts/dialogs/ExportContactsDialog.kt

@@ -0,0 +1,54 @@
+package com.simplemobiletools.contacts.dialogs
+
+import android.support.v7.app.AlertDialog
+import android.view.ViewGroup
+import com.simplemobiletools.commons.extensions.*
+import com.simplemobiletools.contacts.R
+import com.simplemobiletools.contacts.activities.SimpleActivity
+import com.simplemobiletools.contacts.adapters.FilterContactSourcesAdapter
+import com.simplemobiletools.contacts.extensions.config
+import com.simplemobiletools.contacts.helpers.ContactsHelper
+import kotlinx.android.synthetic.main.dialog_export_contacts.view.*
+import java.io.File
+
+class ExportContactsDialog(val activity: SimpleActivity, val path: String, val callback: (file: File, contactSources: HashSet<String>) -> Unit) {
+
+    init {
+        val view = (activity.layoutInflater.inflate(R.layout.dialog_export_contacts, null) as ViewGroup).apply {
+            export_contacts_folder.text = activity.humanizePath(path)
+            export_contacts_filename.setText("contacts_${System.currentTimeMillis() / 1000}")
+
+            ContactsHelper(activity).getContactSources {
+                activity.runOnUiThread {
+                    export_contacts_list.adapter = FilterContactSourcesAdapter(activity, it, activity.config.displayContactSources)
+                }
+            }
+        }
+
+        AlertDialog.Builder(activity)
+                .setPositiveButton(R.string.ok, null)
+                .setNegativeButton(R.string.cancel, null)
+                .create().apply {
+            activity.setupDialogStuff(view, this, R.string.export_contacts) {
+                getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener {
+                    val filename = view.export_contacts_filename.value
+                    when {
+                        filename.isEmpty() -> activity.toast(R.string.empty_name)
+                        filename.isAValidFilename() -> {
+                            val file = File(path, "$filename.vcf")
+                            if (file.exists()) {
+                                activity.toast(R.string.name_taken)
+                                return@setOnClickListener
+                            }
+
+                            val contactSources = (view.export_contacts_list.adapter as FilterContactSourcesAdapter).getSelectedItemsSet()
+                            callback(file, contactSources)
+                            dismiss()
+                        }
+                        else -> activity.toast(R.string.invalid_name)
+                    }
+                }
+            }
+        }
+    }
+}

app/src/main/res/layout/dialog_export_contacts.xml

@@ -0,0 +1,78 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/export_contacts_scrollview"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <LinearLayout
+        android:id="@+id/export_contacts_holder"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:paddingLeft="@dimen/activity_margin"
+        android:paddingRight="@dimen/activity_margin"
+        android:paddingTop="@dimen/activity_margin">
+
+        <com.simplemobiletools.commons.views.MyTextView
+            android:id="@+id/export_contacts_folder_label"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/folder"
+            android:textSize="@dimen/smaller_text_size"/>
+
+        <com.simplemobiletools.commons.views.MyTextView
+            android:id="@+id/export_contacts_folder"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="@dimen/activity_margin"
+            android:layout_marginLeft="@dimen/activity_margin"
+            android:paddingBottom="@dimen/small_margin"
+            android:paddingRight="@dimen/small_margin"
+            android:paddingTop="@dimen/small_margin"/>
+
+        <com.simplemobiletools.commons.views.MyTextView
+            android:id="@+id/export_contacts_filename_label"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/filename_without_vcf"
+            android:textSize="@dimen/smaller_text_size"/>
+
+        <com.simplemobiletools.commons.views.MyEditText
+            android:id="@+id/export_contacts_filename"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="@dimen/activity_margin"
+            android:layout_marginLeft="@dimen/activity_margin"
+            android:paddingRight="@dimen/small_margin"
+            android:paddingTop="@dimen/normal_margin"
+            android:textSize="@dimen/normal_text_size"/>
+
+        <ImageView
+            android:id="@+id/export_contacts_divider"
+            android:layout_width="match_parent"
+            android:layout_height="1px"
+            android:layout_marginBottom="@dimen/medium_margin"
+            android:layout_marginTop="@dimen/medium_margin"
+            android:background="@color/divider_grey"
+            android:importantForAccessibility="no"/>
+
+        <com.simplemobiletools.commons.views.MyTextView
+            android:id="@+id/export_contacts_pick_sources_label"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/include_contact_sources"
+            android:textSize="@dimen/smaller_text_size"/>
+
+        <android.support.v7.widget.RecyclerView
+            android:id="@+id/export_contacts_list"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:clipToPadding="false"
+            android:overScrollMode="never"
+            android:paddingTop="@dimen/medium_margin"
+            app:layoutManager="android.support.v7.widget.LinearLayoutManager"/>
+
+    </LinearLayout>
+</ScrollView>