ProfileService: Use a map to store profile data

This has no visible changes at the moment, but will allow most functions
to pass around strings instead of Profile objects, obviating the need to
implement serialization for them. It also trades some naive linear
searches for the binary search in SimpleArrayMap.

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

app/src/main/java/com/wireguard/android/ProfileService.java

@@ -2,8 +2,7 @@ package com.wireguard.android;
 
 import android.app.Service;
 import android.content.Intent;
-import android.databinding.ObservableArrayList;
+import android.databinding.ObservableArrayMap;
-import android.databinding.ObservableList;
 import android.os.AsyncTask;
 import android.os.Binder;
 import android.os.IBinder;
@@ -28,7 +27,7 @@ public class ProfileService extends Service {
     private static final String TAG = "ProfileService";
 
     private final IBinder binder = new ProfileServiceBinder();
-    private final ObservableList<Profile> profiles = new ObservableArrayList<>();
+    private final ObservableArrayMap<String, Profile> profiles = new ObservableArrayMap<>();
     private RootShell rootShell;
 
     @Override
@@ -58,9 +57,8 @@ public class ProfileService extends Service {
 
         private ProfileAdder(Profile profile, boolean shouldConnect) {
             super();
-            for (Profile p : profiles)
+            if (profiles.get(profile.getName()) != null)
-                if (p.getName().equals(profile.getName()))
+                throw new IllegalStateException("Profile already exists: " + profile.getName());
-                    throw new IllegalStateException("Profile already exists: " + profile.getName());
             this.profile = profile;
             this.shouldConnect = shouldConnect;
         }
@@ -87,7 +85,7 @@ public class ProfileService extends Service {
             if (!result)
                 return;
             profile.setIsConnected(false);
-            profiles.add(profile);
+            profiles.put(profile.getName(), profile);
             if (shouldConnect)
                 new ProfileConnecter(profile).execute();
         }
@@ -176,7 +174,8 @@ public class ProfileService extends Service {
         protected void onPostExecute(List<Profile> loadedProfiles) {
             if (loadedProfiles == null)
                 return;
-            profiles.addAll(loadedProfiles);
+            for (Profile profile : loadedProfiles)
+                profiles.put(profile.getName(), profile);
         }
     }
 
@@ -208,7 +207,7 @@ public class ProfileService extends Service {
         protected void onPostExecute(Boolean result) {
             if (!result)
                 return;
-            profiles.remove(profile);
+            profiles.remove(profile.getName());
             if (replaceWith != null)
                 new ProfileAdder(replaceWith, shouldConnect).execute();
         }
@@ -217,7 +216,7 @@ public class ProfileService extends Service {
     private class ProfileServiceBinder extends Binder implements ProfileServiceInterface {
         @Override
         public void connectProfile(Profile profile) {
-            if (!profiles.contains(profile))
+            if (profiles.get(profile.getName()) != profile)
                 return;
             if (profile.getIsConnected())
                 return;
@@ -226,14 +225,14 @@ public class ProfileService extends Service {
 
         @Override
         public Profile copyProfileForEditing(Profile profile) {
-            if (!profiles.contains(profile))
+            if (profiles.get(profile.getName()) != profile)
                 return null;
             return profile.copy();
         }
 
         @Override
         public void disconnectProfile(Profile profile) {
-            if (!profiles.contains(profile))
+            if (profiles.get(profile.getName()) != profile)
                 return;
             if (!profile.getIsConnected())
                 return;
@@ -241,13 +240,13 @@ public class ProfileService extends Service {
         }
 
         @Override
-        public ObservableList<Profile> getProfiles() {
+        public ObservableArrayMap<String, Profile> getProfiles() {
             return profiles;
         }
 
         @Override
         public void removeProfile(Profile profile) {
-            if (!profiles.contains(profile))
+            if (profiles.get(profile.getName()) != profile)
                 return;
             if (profile.getIsConnected())
                 new ProfileDisconnecter(profile).execute();
@@ -257,7 +256,7 @@ public class ProfileService extends Service {
         @Override
         public void saveProfile(Profile oldProfile, Profile newProfile) {
             if (oldProfile != null) {
-                if (!profiles.contains(oldProfile))
+                if (profiles.get(oldProfile.getName()) != oldProfile)
                     return;
                 final boolean wasConnected = oldProfile.getIsConnected();
                 if (wasConnected)

app/src/main/java/com/wireguard/android/ProfileServiceInterface.java

@@ -1,6 +1,6 @@
 package com.wireguard.android;
 
-import android.databinding.ObservableList;
+import android.databinding.ObservableArrayMap;
 
 import com.wireguard.config.Profile;
 
@@ -44,7 +44,7 @@ public interface ProfileServiceInterface {
      *
      * @return The list of known profiles.
      */
-    ObservableList<Profile> getProfiles();
+    ObservableArrayMap<String, Profile> getProfiles();
 
     /**
      * Remove a profile from being managed by this service. If the profile is currently connected,

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

@@ -6,7 +6,7 @@
 
         <variable
             name="profiles"
-            type="android.databinding.ObservableList&lt;com.wireguard.config.Profile&gt;" />
+            type="android.databinding.ObservableArrayMap&lt;String, com.wireguard.config.Profile&gt;" />
     </data>
 
     <ListView