allow removing contacts from groups by long pressing them and selecting Remove

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

@@ -11,11 +11,12 @@ import com.simplemobiletools.contacts.extensions.editContact
 import com.simplemobiletools.contacts.extensions.tryStartCall
 import com.simplemobiletools.contacts.extensions.viewContact
 import com.simplemobiletools.contacts.helpers.*
+import com.simplemobiletools.contacts.interfaces.RemoveFromGroupListener
 import com.simplemobiletools.contacts.models.Contact
 import com.simplemobiletools.contacts.models.Group
 import kotlinx.android.synthetic.main.activity_group_contacts.*
 
-class GroupContactsActivity : SimpleActivity() {
+class GroupContactsActivity : SimpleActivity(), RemoveFromGroupListener {
     private var allContacts = ArrayList<Contact>()
     private var groupContacts = ArrayList<Contact>()
     lateinit var group: Group
@@ -53,7 +54,7 @@ class GroupContactsActivity : SimpleActivity() {
     }
 
     private fun updateContacts(contacts: ArrayList<Contact>) {
-        ContactsAdapter(this, contacts, null, LOCATION_GROUP_CONTACTS, group_contacts_list, group_contacts_fastscroller) {
+        ContactsAdapter(this, contacts, null, LOCATION_GROUP_CONTACTS, this, group_contacts_list, group_contacts_fastscroller) {
             when (config.onContactClick) {
                 ON_CLICK_CALL_CONTACT -> {
                     val contact = it as Contact
@@ -78,4 +79,8 @@ class GroupContactsActivity : SimpleActivity() {
             group_contacts_fastscroller.updateBubbleText(item?.getBubbleText() ?: "")
         }
     }
+
+    override fun removeFromGroup(contacts: ArrayList<Contact>) {
+        ContactsHelper(this).removeContactsFromGroup(contacts, group.id)
+    }
 }

app/src/main/kotlin/com/simplemobiletools/contacts/adapters/ContactsAdapter.kt

@@ -26,12 +26,14 @@ import com.simplemobiletools.contacts.helpers.LOCATION_CONTACTS_TAB
 import com.simplemobiletools.contacts.helpers.LOCATION_FAVORITES_TAB
 import com.simplemobiletools.contacts.helpers.LOCATION_GROUP_CONTACTS
 import com.simplemobiletools.contacts.interfaces.RefreshContactsListener
+import com.simplemobiletools.contacts.interfaces.RemoveFromGroupListener
 import com.simplemobiletools.contacts.models.Contact
 import kotlinx.android.synthetic.main.item_contact_with_number.view.*
 import java.util.*
 
-class ContactsAdapter(activity: SimpleActivity, var contactItems: ArrayList<Contact>, private val listener: RefreshContactsListener?,
+class ContactsAdapter(activity: SimpleActivity, var contactItems: ArrayList<Contact>, private val refreshListener: RefreshContactsListener?,
-                      private val location: Int, recyclerView: MyRecyclerView, fastScroller: FastScroller, itemClick: (Any) -> Unit) :
+                      private val location: Int, private val removeListener: RemoveFromGroupListener?, recyclerView: MyRecyclerView,
+                      fastScroller: FastScroller, itemClick: (Any) -> Unit) :
         MyRecyclerViewAdapter(activity, recyclerView, fastScroller, itemClick) {
 
     private lateinit var contactDrawable: Drawable
@@ -136,11 +138,11 @@ class ContactsAdapter(activity: SimpleActivity, var contactItems: ArrayList<Cont
 
         ContactsHelper(activity).deleteContacts(contactsToRemove)
         if (contactItems.isEmpty()) {
-            listener?.refreshContacts(true, true)
+            refreshListener?.refreshContacts(true, true)
             finishActMode()
         } else {
             removeSelectedItems()
-            listener?.refreshFavorites()
+            refreshListener?.refreshFavorites()
         }
     }
 
@@ -154,13 +156,14 @@ class ContactsAdapter(activity: SimpleActivity, var contactItems: ArrayList<Cont
         if (location == LOCATION_FAVORITES_TAB) {
             ContactsHelper(activity).removeFavorites(contactsToRemove)
             if (contactItems.isEmpty()) {
-                listener?.refreshFavorites()
+                refreshListener?.refreshFavorites()
                 finishActMode()
             } else {
                 removeSelectedItems()
             }
         } else if (location == LOCATION_GROUP_CONTACTS) {
-
+            removeListener?.removeFromGroup(contactsToRemove)
+            removeSelectedItems()
         }
     }
 
@@ -168,7 +171,7 @@ class ContactsAdapter(activity: SimpleActivity, var contactItems: ArrayList<Cont
         val newFavorites = ArrayList<Contact>()
         selectedPositions.forEach { newFavorites.add(contactItems[it]) }
         ContactsHelper(activity).addFavorites(newFavorites)
-        listener?.refreshFavorites()
+        refreshListener?.refreshFavorites()
         finishActMode()
     }
 

app/src/main/kotlin/com/simplemobiletools/contacts/fragments/MyViewPagerFragment.kt

@@ -109,7 +109,7 @@ abstract class MyViewPagerFragment(context: Context, attributeSet: AttributeSet)
         if (currAdapter == null || forceListRedraw) {
             forceListRedraw = false
             val location = if (this is FavoritesFragment) LOCATION_FAVORITES_TAB else LOCATION_CONTACTS_TAB
-            ContactsAdapter(activity as SimpleActivity, contacts, activity, location, fragment_list, fragment_fastscroller) {
+            ContactsAdapter(activity as SimpleActivity, contacts, activity, location, null, fragment_list, fragment_fastscroller) {
                 when (config.onContactClick) {
                     ON_CLICK_CALL_CONTACT -> {
                         val contact = it as Contact

app/src/main/kotlin/com/simplemobiletools/contacts/interfaces/RemoveFromGroupListener.kt

@@ -0,0 +1,7 @@
+package com.simplemobiletools.contacts.interfaces
+
+import com.simplemobiletools.contacts.models.Contact
+
+interface RemoveFromGroupListener {
+    fun removeFromGroup(contacts: ArrayList<Contact>)
+}