Collection membership: implement leaving collections.

app/src/main/java/com/etesync/syncadapter/ui/etebase/CollectionMembersFragment.kt

@@ -6,6 +6,7 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import android.widget.Button
 import android.widget.CheckBox
 import android.widget.EditText
 import android.widget.TextView
@@ -21,6 +22,7 @@ import com.etesync.syncadapter.CachedCollection
 import com.etesync.syncadapter.Constants
 import com.etesync.syncadapter.R
 import com.etesync.syncadapter.resource.LocalCalendar
+import com.etesync.syncadapter.syncadapter.requestSync
 import com.etesync.syncadapter.ui.BaseActivity
 import org.jetbrains.anko.doAsync
 import org.jetbrains.anko.uiThread
@@ -28,9 +30,15 @@ import org.jetbrains.anko.uiThread
 class CollectionMembersFragment : Fragment() {
     private val model: AccountViewModel by activityViewModels()
     private val collectionModel: CollectionViewModel by activityViewModels()
+    private var isAdmin: Boolean = false
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
-        val ret = inflater.inflate(R.layout.etebase_view_collection_members, container, false)
+        val ret = if (collectionModel.value!!.col.accessLevel == CollectionAccessLevel.Admin) {
+            isAdmin = true
+            inflater.inflate(R.layout.etebase_view_collection_members, container, false)
+        } else {
+            inflater.inflate(R.layout.etebase_view_collection_members_no_access, container, false)
+        }
 
         if (savedInstanceState == null) {
             collectionModel.observe(this) {
@@ -45,10 +53,6 @@ class CollectionMembersFragment : Fragment() {
     }
 
     private fun initUi(inflater: LayoutInflater, v: View, cachedCollection: CachedCollection) {
-        v.findViewById<View>(R.id.add_member).setOnClickListener {
-            addMemberClicked()
-        }
-
         val meta = cachedCollection.meta
         val colorSquare = v.findViewById<View>(R.id.color)
         val color = LocalCalendar.parseColor(meta.color)
@@ -70,6 +74,24 @@ class CollectionMembersFragment : Fragment() {
         val desc = v.findViewById<View>(R.id.description) as TextView
         desc.text = meta.description
 
+        if (isAdmin) {
+            v.findViewById<View>(R.id.add_member).setOnClickListener {
+                addMemberClicked()
+            }
+        } else {
+            v.findViewById<Button>(R.id.leave).setOnClickListener {
+                doAsync {
+                    val membersManager = model.value!!.colMgr.getMemberManager(cachedCollection.col)
+                    membersManager.leave()
+                    val applicationContext = activity?.applicationContext
+                    if (applicationContext != null) {
+                        requestSync(applicationContext, model.value!!.account)
+                    }
+                    activity?.finish()
+                }
+            }
+        }
+
         v.findViewById<View>(R.id.progressBar).visibility = View.GONE
     }
 

app/src/main/java/com/etesync/syncadapter/ui/etebase/ViewCollectionFragment.kt

@@ -127,19 +127,11 @@ class ViewCollectionFragment : Fragment() {
                 }
             }
             R.id.on_manage_members -> {
-                if (cachedCollection.col.accessLevel == CollectionAccessLevel.Admin) {
+                parentFragmentManager.commit {
-                    parentFragmentManager.commit {
+                    replace(R.id.fragment_container, CollectionMembersFragment())
-                        replace(R.id.fragment_container, CollectionMembersFragment())
+                    addToBackStack(null)
-                        addToBackStack(null)
+                }
-                    }
+            }
-                } else {
-                    val dialog = AlertDialog.Builder(requireContext())
-                            .setIcon(R.drawable.ic_info_dark)
-                            .setTitle(R.string.not_allowed_title)
-                            .setMessage(R.string.edit_owner_only_anon)
-                            .setPositiveButton(android.R.string.yes) { _, _ -> }.create()
-                    dialog.show()
-                }            }
             R.id.on_import -> {
                 if (cachedCollection.col.accessLevel != CollectionAccessLevel.ReadOnly) {
                     parentFragmentManager.commit {

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

@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <include
+        layout="@layout/collection_header"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_margin="@dimen/activity_margin" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:padding="@dimen/activity_margin">
+
+        <ProgressBar
+            android:id="@+id/progressBar"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:layout_gravity="right" />
+    </LinearLayout>
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginLeft="4dp"
+        android:text="@string/collection_members_no_access" />
+
+    <Button
+        android:id="@+id/leave"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center_horizontal"
+        android:layout_marginTop="14dp"
+        android:text="@string/collection_members_leave" />
+
+</LinearLayout>

app/src/main/res/values/strings.xml

@@ -167,6 +167,8 @@
     <string name="collection_members_remove_title">Remove member</string>
     <string name="collection_members_remove">Would you like to revoke %s\'s access?\nPlease be advised that a malicious user would potentially be able to retain access to encryption keys. Please refer to the FAQ for more information.</string>
     <string name="collection_members_remove_admin">Removing access to admins is currently not supported.</string>
+    <string name="collection_members_no_access">Only admins are allowed to manage collection memberships. Would you like to leave the collection?</string>
+    <string name="collection_members_leave">Leave</string>
 
     <!-- Invitations -->
     <string name="invitations_title">Invitations</string>