Fill forms only once

- This is simpler than using SimpleTask for a one shot get
- Account, identity and folder are update on state change / error

app/src/main/java/eu/faircode/email/FragmentAccount.java

@@ -596,6 +596,8 @@ public class FragmentAccount extends FragmentEx {
 
         // Observe
         DB.getInstance(getContext()).account().liveAccount(id).observe(getViewLifecycleOwner(), new Observer<EntityAccount>() {
+            boolean once = false;
+
             @Override
             public void onChanged(@Nullable EntityAccount account) {
                 // Get providers
@@ -607,6 +609,9 @@ public class FragmentAccount extends FragmentEx {
                 spProvider.setAdapter(padapter);
 
                 if (savedInstanceState == null) {
+                    if (!once) {
+                        once = true;
+
                         etName.setText(account == null ? null : account.name);
                         etHost.setText(account == null ? null : account.host);
                         etPort.setText(account == null ? null : Long.toString(account.port));
@@ -614,6 +619,7 @@ public class FragmentAccount extends FragmentEx {
                         tilPassword.getEditText().setText(account == null ? null : account.password);
                         cbSynchronize.setChecked(account == null ? true : account.synchronize);
                         cbPrimary.setChecked(account == null ? true : account.primary);
+                    }
                 } else {
                     int provider = savedInstanceState.getInt("provider");
                     spProvider.setTag(provider);

app/src/main/java/eu/faircode/email/FragmentFolder.java

@@ -148,6 +148,8 @@ public class FragmentFolder extends FragmentEx {
 
         // Observe
         DB.getInstance(getContext()).folder().liveFolder(id).observe(getViewLifecycleOwner(), new Observer<EntityFolder>() {
+            boolean once = false;
+
             @Override
             public void onChanged(@Nullable EntityFolder folder) {
                 if (folder == null) {
@@ -156,9 +158,13 @@ public class FragmentFolder extends FragmentEx {
                 }
 
                 if (savedInstanceState == null) {
+                    if (!once) {
+                        once = true;
+
                         cbSynchronize.setChecked(folder.synchronize);
                         etAfter.setText(Integer.toString(folder.after));
                     }
+                }
 
                 pbWait.setVisibility(View.GONE);
                 Helper.setViewsEnabled(view, true);

app/src/main/java/eu/faircode/email/FragmentIdentity.java

@@ -393,9 +393,14 @@ public class FragmentIdentity extends FragmentEx {
 
         // Observe identity
         db.identity().liveIdentity(id).observe(getViewLifecycleOwner(), new Observer<EntityIdentity>() {
+            boolean once = false;
+
             @Override
             public void onChanged(@Nullable final EntityIdentity identity) {
                 if (savedInstanceState == null) {
+                    if (!once) {
+                        once = true;
+
                         etName.setText(identity == null ? null : identity.name);
                         etEmail.setText(identity == null ? null : identity.email);
                         etReplyTo.setText(identity == null ? null : identity.replyto);
@@ -408,6 +413,7 @@ public class FragmentIdentity extends FragmentEx {
                         cbPrimary.setChecked(identity == null ? true : identity.primary);
 
                         etName.requestFocus();
+                    }
                 } else
                     tilPassword.getEditText().setText(savedInstanceState.getString("password"));