Long overdue refactoring

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

@@ -0,0 +1,92 @@
+package eu.faircode.email;
+
+/*
+    This file is part of FairEmail.
+
+    FairEmail is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    FairEmail is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with FairEmail.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright 2018-2023 by Marcel Bokhorst (M66B)
+*/
+
+import android.app.Dialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.os.Bundle;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AlertDialog;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class FragmentDialogLabelsManage extends FragmentDialogBase {
+    @NonNull
+    @Override
+    public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {
+        final long id = getArguments().getLong("id");
+        String self = getArguments().getString("self");
+        String[] labels = getArguments().getStringArray("labels");
+        final String[] folders = getArguments().getStringArray("folders");
+
+        List<String> l = new ArrayList<>();
+        if (self != null)
+            l.add(self);
+        if (labels != null)
+            l.addAll(Arrays.asList(labels));
+
+        boolean[] checked = new boolean[folders.length];
+        for (int i = 0; i < folders.length; i++)
+            if (l.contains(folders[i]))
+                checked[i] = true;
+
+        return new AlertDialog.Builder(getContext())
+                .setIcon(R.drawable.twotone_label_24)
+                .setTitle(R.string.title_manage_labels)
+                .setMultiChoiceItems(folders, checked, new DialogInterface.OnMultiChoiceClickListener() {
+                    @Override
+                    public void onClick(DialogInterface dialog, int which, boolean isChecked) {
+                        Bundle args = new Bundle();
+                        args.putLong("id", id);
+                        args.putString("label", folders[which]);
+                        args.putBoolean("set", isChecked);
+
+                        new SimpleTask<Void>() {
+                            @Override
+                            protected Void onExecute(Context context, Bundle args) {
+                                long id = args.getLong("id");
+                                String label = args.getString("label");
+                                boolean set = args.getBoolean("set");
+
+                                DB db = DB.getInstance(context);
+                                EntityMessage message = db.message().getMessage(id);
+                                if (message == null)
+                                    return null;
+
+                                EntityOperation.queue(context, message, EntityOperation.LABEL, label, set);
+
+                                return null;
+                            }
+
+                            @Override
+                            protected void onException(Bundle args, Throwable ex) {
+                                Log.unexpectedError(getParentFragmentManager(), ex);
+                            }
+                        }.execute(FragmentDialogLabelsManage.this, args, "label:set");
+                    }
+                })
+                .create();
+    }
+}