Use linked drafts folder

Fixes #28

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

@@ -68,9 +68,10 @@ public class AdapterFolder extends RecyclerView.Adapter<AdapterFolder.ViewHolder
             ivSync = itemView.findViewById(R.id.ivSync);
         }
 
-        private void wire() {
+        private void wire(boolean properties) {
             itemView.setOnClickListener(this);
-            itemView.setOnLongClickListener(this);
+            if (properties)
+                itemView.setOnLongClickListener(this);
         }
 
         private void unwire() {
@@ -249,7 +250,6 @@ public class AdapterFolder extends RecyclerView.Adapter<AdapterFolder.ViewHolder
         TupleFolderEx folder = filtered.get(position);
         holder.bindTo(folder);
 
-
-        holder.wire();
+        holder.wire(folder.account != null);
     }
 }

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

@@ -43,7 +43,7 @@ public class ApplicationEx extends Application {
                 DB db = null;
                 try {
                     db = DB.getBlockingInstance(ApplicationEx.this);
-                    EntityFolder drafts = db.folder().getPrimaryFolder(EntityFolder.TYPE_DRAFTS);
+                    EntityFolder drafts = db.folder().getLocalDrafts();
                     if (drafts != null) {
                         Address to = new InternetAddress("marcel+email@faircode.eu", "FairCode");
                         String body = ex + "\n" + Log.getStackTraceString(ex);

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

@@ -45,7 +45,7 @@ public interface DaoFolder {
             " FROM folder" +
             " LEFT JOIN account ON account.id = folder.account" +
             " LEFT JOIN message ON message.folder = folder.id AND NOT message.ui_hide" +
-            " WHERE folder.account = :account" +
+            " WHERE folder.account = :account OR folder.account IS NULL" +
             " GROUP BY folder.id")
     LiveData<List<TupleFolderEx>> liveFolders(long account);
 
@@ -71,14 +71,12 @@ public interface DaoFolder {
             " WHERE account = :account AND type = :type")
     EntityFolder getFolderByType(long account, String type);
 
+    @Query("SELECT * FROM folder WHERE account IS NULL AND type = '" + EntityFolder.TYPE_DRAFTS + "'")
+    EntityFolder getLocalDrafts();
+
     @Query("SELECT * FROM folder WHERE type = '" + EntityFolder.TYPE_OUTBOX + "'")
     EntityFolder getOutbox();
 
-    @Query("SELECT folder.* FROM folder" +
-            " JOIN account ON account.id = folder.account" +
-            " WHERE account.`primary` AND type = :type ")
-    EntityFolder getPrimaryFolder(String type);
-
     @Insert(onConflict = OnConflictStrategy.REPLACE)
     long insertFolder(EntityFolder folder);
 

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

@@ -61,7 +61,7 @@ public class FragmentAbout extends FragmentEx {
                     public void run() {
                         try {
                             DB db = DB.getInstance(getContext());
-                            EntityFolder drafts = db.folder().getPrimaryFolder(EntityFolder.TYPE_DRAFTS);
+                            EntityFolder drafts = db.folder().getLocalDrafts();
                             if (drafts != null) {
                                 StringBuilder info = Helper.getDebugInfo();
                                 info.insert(0, getString(R.string.title_debug_info_remark) + "\n\n\n\n");

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

@@ -324,16 +324,15 @@ public class FragmentAccount extends FragmentEx {
                                     drafts = true;
                             }
                         }
-/*
+
                         if (!drafts) {
                             EntityFolder folder = new EntityFolder();
-                            folder.name = getContext().getString(R.string.title_local_drafts);
+                            folder.name = getContext().getString(R.string.title_folder_local_drafts);
                             folder.type = EntityFolder.TYPE_DRAFTS;
                             folder.synchronize = false;
                             folder.after = 0;
                             folders.add(folder);
                         }
-*/
                     } finally {
                         if (istore != null)
                             istore.close();

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

@@ -51,7 +51,6 @@ import java.util.Date;
 import java.util.List;
 
 import javax.mail.Address;
-import javax.mail.MessagingException;
 import javax.mail.internet.InternetAddress;
 
 import androidx.annotation.NonNull;
@@ -515,9 +514,20 @@ public class FragmentCompose extends FragmentEx {
                 // Get data
                 EntityMessage draft = message.getMessage(id);
                 EntityIdentity ident = identity.getIdentity(args.getLong("iid"));
-                EntityFolder drafts = db.folder().getPrimaryFolder(EntityFolder.TYPE_DRAFTS);
+                if (ident == null)
+                    throw new IllegalArgumentException(getContext().getString(R.string.title_from_missing));
+
+                EntityFolder drafts = db.folder().getFolderByType(ident.account, EntityFolder.TYPE_DRAFTS);
                 if (drafts == null)
-                    throw new Throwable(getContext().getString(R.string.title_no_primary_drafts));
+                    drafts = db.folder().getLocalDrafts();
+                if (drafts == null) {
+                    drafts = new EntityFolder();
+                    drafts.name = getContext().getString(R.string.title_folder_local_drafts);
+                    drafts.type = EntityFolder.TYPE_DRAFTS;
+                    drafts.synchronize = false;
+                    drafts.after = 0;
+                    db.folder().insertFolder(drafts);
+                }
 
                 long rid = args.getLong("rid", -1);
                 String thread = args.getString("thread");
@@ -563,10 +573,8 @@ public class FragmentCompose extends FragmentEx {
                     db.beginTransaction();
 
                     if ("send".equals(action)) {
-                        if (draft.identity == null)
-                            throw new MessagingException(getContext().getString(R.string.title_from_missing));
                         if (draft.to == null && draft.cc == null && draft.bcc == null)
-                            throw new MessagingException(getContext().getString(R.string.title_to_missing));
+                            throw new IllegalArgumentException(getContext().getString(R.string.title_to_missing));
 
                         EntityOperation.queue(getContext(), draft, EntityOperation.DELETE);
 
@@ -583,7 +591,7 @@ public class FragmentCompose extends FragmentEx {
                     else if ("trash".equals(action)) {
                         EntityOperation.queue(getContext(), draft, EntityOperation.DELETE);
 
-                        EntityFolder trash = db.folder().getPrimaryFolder(EntityFolder.TYPE_TRASH);
+                        EntityFolder trash = db.folder().getFolderByType(ident.account, EntityFolder.TYPE_TRASH);
                         if (trash != null) {
                             draft.id = null;
                             draft.folder = trash.id;

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

@@ -19,7 +19,6 @@ package eu.faircode.email;
     Copyright 2018 by Marcel Bokhorst (M66B)
 */
 
-import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
@@ -37,9 +36,6 @@ import androidx.annotation.Nullable;
 import androidx.constraintlayout.widget.Group;
 import androidx.lifecycle.LiveData;
 import androidx.lifecycle.Observer;
-import androidx.loader.app.LoaderManager;
-import androidx.loader.content.AsyncTaskLoader;
-import androidx.loader.content.Loader;
 import androidx.paging.LivePagedListBuilder;
 import androidx.paging.PagedList;
 import androidx.recyclerview.widget.LinearLayoutManager;
@@ -95,7 +91,6 @@ public class FragmentMessages extends FragmentEx {
         tvNoEmail.setVisibility(View.GONE);
         grpReady.setVisibility(View.GONE);
         pbWait.setVisibility(View.VISIBLE);
-        fab.setVisibility(View.GONE);
 
         return view;
     }
@@ -150,45 +145,5 @@ public class FragmentMessages extends FragmentEx {
                 }
             }
         });
-
-        LoaderManager.getInstance(this)
-                .restartLoader(ActivityView.LOADER_MESSAGES_INIT, new Bundle(), initLoaderCallbacks).forceLoad();
-    }
-
-    private static class InitLoader extends AsyncTaskLoader<Bundle> {
-        InitLoader(@NonNull Context context) {
-            super(context);
-        }
-
-        @Nullable
-        @Override
-        public Bundle loadInBackground() {
-            Bundle result = new Bundle();
-            try {
-                EntityFolder drafts = DB.getInstance(getContext()).folder().getPrimaryFolder(EntityFolder.TYPE_DRAFTS);
-                result.putBoolean("drafts", drafts != null);
-            } catch (Throwable ex) {
-                Log.e(Helper.TAG, ex + "\n" + Log.getStackTraceString(ex));
-                result.putBoolean("drafts", false);
-            }
-            return result;
-        }
     }
-
-    private LoaderManager.LoaderCallbacks initLoaderCallbacks = new LoaderManager.LoaderCallbacks<Bundle>() {
-        @NonNull
-        @Override
-        public Loader<Bundle> onCreateLoader(int id, @Nullable Bundle args) {
-            return new InitLoader(getContext());
-        }
-
-        @Override
-        public void onLoadFinished(@NonNull Loader<Bundle> loader, Bundle data) {
-            fab.setVisibility(data.getBoolean("drafts", false) ? View.VISIBLE : View.GONE);
-        }
-
-        @Override
-        public void onLoaderReset(@NonNull Loader<Bundle> loader) {
-        }
-    };
 }

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

@@ -67,7 +67,6 @@
     <string name="title_no_user">User name missing</string>
     <string name="title_no_password">Password missing</string>
     <string name="title_no_idle">IDLE not supported</string>
-    <string name="title_local_drafts">Local drafts</string>
     <string name="title_account_delete">Delete this account permanently?</string>
     <string name="title_identity_delete">Delete this identity permanently?</string>
 
@@ -84,6 +83,7 @@
     <string name="title_folder_junk">Spam</string>
     <string name="title_folder_sent">Sent</string>
     <string name="title_folder_user">User</string>
+    <string name="title_folder_local_drafts">Local drafts</string>
     <string name="title_folder_thread">Message thread</string>
     <string name="title_no_messages">No messages</string>
 
@@ -118,8 +118,6 @@
     <string name="title_save">Save</string>
     <string name="title_send">Send</string>
 
-    <string name="title_no_primary_drafts">No primary account or no drafts folder</string>
-
     <string name="title_from_missing">Sender missing</string>
     <string name="title_to_missing">Recipient missing</string>
     <string name="title_draft_trashed">Draft trashed</string>