Added basic log

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

@@ -0,0 +1,91 @@
+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.
+
+    NetGuard 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 NetGuard.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright 2018 by Marcel Bokhorst (M66B)
+*/
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ProgressBar;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.constraintlayout.widget.Group;
+import androidx.lifecycle.Observer;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+public class FragmentLogs extends FragmentEx {
+    private RecyclerView rvLog;
+    private ProgressBar pbWait;
+    private Group grpReady;
+
+    private AdapterLog adapter;
+
+    @Override
+    @Nullable
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        setSubtitle(R.string.title_log);
+
+        View view = inflater.inflate(R.layout.fragment_logs, container, false);
+
+        // Get controls
+        rvLog = view.findViewById(R.id.rvLog);
+        pbWait = view.findViewById(R.id.pbWait);
+        grpReady = view.findViewById(R.id.grpReady);
+
+        // Wire controls
+
+        rvLog.setHasFixedSize(false);
+        LinearLayoutManager llm = new LinearLayoutManager(getContext());
+        rvLog.setLayoutManager(llm);
+
+        adapter = new AdapterLog(getContext());
+        rvLog.setAdapter(adapter);
+
+        // Initialize
+        grpReady.setVisibility(View.GONE);
+        pbWait.setVisibility(View.VISIBLE);
+
+        return view;
+    }
+
+    @Override
+    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        DB db = DB.getInstance(getContext());
+        db.log().liveLogs().observe(getViewLifecycleOwner(), new Observer<List<EntityLog>>() {
+            @Override
+            public void onChanged(List<EntityLog> logs) {
+                if (logs == null)
+                    logs = new ArrayList<>();
+
+                adapter.set(logs);
+
+                pbWait.setVisibility(View.GONE);
+                grpReady.setVisibility(View.VISIBLE);
+            }
+        });
+    }
+}