Added unified inbox widget

FAQ.md

@@ -54,7 +54,6 @@ Anything on this list is in random order and *might* be added in the near future
 ## Frequently requested features
 
 * *Design*: the design is based on many discussions and if you like you can discuss about it [in this forum](https://forum.xda-developers.com/android/apps-games/source-email-t3824168) too. See below for the design goals.
-* *Widget to read messages*: widgets can have limited user interaction only, so a widget to read conversations would not be very convenient. Moreover, it would be not very useful to duplicate functions which are already available in the app.
 * *ActiveSync*: using the Exchange ActiveSync protocol requires [a license](https://en.wikipedia.org/wiki/Exchange_ActiveSync#Licensing), so this cannot be added.
 
 The goal of the design is to be minimalistic (no unnecessary menus, buttons, etc) and non distracting (no fancy colors, animations, etc).

app/src/main/AndroidManifest.xml

@@ -255,6 +255,23 @@
                 android:resource="@xml/widget" />
         </receiver>
 
+        <receiver
+            android:name=".WidgetUnified"
+            android:label="@string/title_folder_unified">
+
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+            </intent-filter>
+
+            <meta-data
+                android:name="android.appwidget.provider"
+                android:resource="@xml/widget_unified" />
+        </receiver>
+
+        <service
+            android:name="WidgetUnifiedService"
+            android:permission="android.permission.BIND_REMOTEVIEWS" />
+
         <receiver android:name=".ReceiverAutoStart">
             <intent-filter>
                 <action android:name="android.intent.action.BOOT_COMPLETED" />

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

@@ -102,6 +102,7 @@ public class ActivityView extends ActivityBilling implements FragmentManager.OnB
     static final int REQUEST_OUTBOX = 4;
     static final int REQUEST_ERROR = 5;
     static final int REQUEST_UPDATE = 6;
+    static final int REQUEST_WIDGET = 7;
 
     static final String ACTION_VIEW_FOLDERS = BuildConfig.APPLICATION_ID + ".VIEW_FOLDERS";
     static final String ACTION_VIEW_MESSAGES = BuildConfig.APPLICATION_ID + ".VIEW_MESSAGES";
@@ -506,7 +507,8 @@ public class ActivityView extends ActivityBilling implements FragmentManager.OnB
                 else if (action.startsWith("thread")) {
                     intent.putExtra("thread", action.split(":", 2)[1]);
                     onViewThread(intent);
-                }
+                } else if (action.equals("widget"))
+                    onViewThread(intent);
             }
 
             if (intent.hasExtra(Intent.EXTRA_PROCESS_TEXT)) {

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

@@ -273,6 +273,17 @@ public interface DaoMessage {
             " ORDER BY message.received")
     LiveData<List<TupleMessageEx>> liveUnseenNotify();
 
+    @Query("SELECT message.*" +
+            " FROM message" +
+            " JOIN account ON account.id = message.account" +
+            " JOIN folder ON folder.id = message.folder" +
+            " WHERE account.`synchronize`" +
+            " AND folder.unified" +
+            " AND message.ui_hide = 0" +
+            " AND message.ui_snoozed IS NULL" +
+            " ORDER BY message.received DESC")
+    LiveData<List<EntityMessage>> liveWidgetUnified();
+
     @Query("SELECT COUNT(message.id) FROM message" +
             " JOIN account ON account.id = message.account" +
             " JOIN folder ON folder.id = message.folder" +

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

@@ -0,0 +1,67 @@
+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 2018-2019 by Marcel Bokhorst (M66B)
+*/
+
+import android.app.PendingIntent;
+import android.appwidget.AppWidgetManager;
+import android.appwidget.AppWidgetProvider;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.widget.RemoteViews;
+
+public class WidgetUnified extends AppWidgetProvider {
+    @Override
+    public void onUpdate(final Context context, final AppWidgetManager appWidgetManager, final int[] appWidgetIds) {
+        Intent view = new Intent(context, ActivityView.class);
+        view.setAction("unified");
+        view.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        PendingIntent pi = PendingIntent.getActivity(context, ActivityView.REQUEST_UNIFIED, view, PendingIntent.FLAG_UPDATE_CURRENT);
+
+        for (int id : appWidgetIds) {
+            RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget_unified);
+
+            views.setOnClickPendingIntent(R.id.title, pi);
+
+            Intent service = new Intent(context, WidgetUnifiedService.class);
+            service.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, id);
+            service.setData(Uri.parse(service.toUri(Intent.URI_INTENT_SCHEME)));
+
+            views.setRemoteAdapter(R.id.lv, service);
+
+            Intent thread = new Intent(context, ActivityView.class);
+            thread.setAction("widget");
+            thread.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            PendingIntent piItem = PendingIntent.getActivity(
+                    context, ActivityView.REQUEST_WIDGET, thread, PendingIntent.FLAG_UPDATE_CURRENT);
+
+            views.setPendingIntentTemplate(R.id.lv, piItem);
+
+            appWidgetManager.updateAppWidget(id, views);
+        }
+    }
+
+    static void update(Context context) {
+        AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
+        int[] appWidgetIds = appWidgetManager.getAppWidgetIds(new ComponentName(context, WidgetUnified.class));
+        appWidgetManager.notifyAppWidgetViewDataChanged(appWidgetIds, R.id.lv);
+    }
+}

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

@@ -0,0 +1,173 @@
+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 2018-2019 by Marcel Bokhorst (M66B)
+*/
+
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.Typeface;
+import android.os.Handler;
+import android.text.SpannableString;
+import android.text.Spanned;
+import android.text.TextUtils;
+import android.text.style.StyleSpan;
+import android.widget.RemoteViews;
+import android.widget.RemoteViewsService;
+
+import androidx.lifecycle.Observer;
+
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+
+import static android.os.Looper.getMainLooper;
+
+public class WidgetUnifiedRemoteViewsFactory implements RemoteViewsService.RemoteViewsFactory {
+    private Context context;
+    private DateFormat DTF;
+
+    private Handler handler;
+    private TwoStateOwner owner;
+    private List<EntityMessage> messages = new ArrayList<>();
+
+    WidgetUnifiedRemoteViewsFactory(final Context context) {
+        this.context = context;
+        this.DTF = Helper.getDateTimeInstance(context, SimpleDateFormat.SHORT, SimpleDateFormat.SHORT);
+
+        this.handler = new Handler(getMainLooper());
+        handler.post(new Runnable() {
+            @Override
+            public void run() {
+                DB db = DB.getInstance(context);
+                owner = new TwoStateOwner("WidgetUnified");
+                db.message().liveWidgetUnified().observe(owner, new Observer<List<EntityMessage>>() {
+                    @Override
+                    public void onChanged(List<EntityMessage> messages) {
+                        if (messages == null)
+                            messages = new ArrayList<>();
+
+                        boolean changed = false;
+                        if (WidgetUnifiedRemoteViewsFactory.this.messages.size() == messages.size()) {
+                            for (int i = 0; i < messages.size(); i++) {
+                                EntityMessage m1 = messages.get(i);
+                                EntityMessage m2 = WidgetUnifiedRemoteViewsFactory.this.messages.get(i);
+                                if (!m1.id.equals(m2.id) ||
+                                        !MessageHelper.equal(m1.from, m2.from) ||
+                                        !m1.received.equals(m2.received) ||
+                                        !Objects.equals(m1.subject, m2.subject) ||
+                                        m1.ui_seen != m2.ui_seen) {
+                                    changed = true;
+                                    break;
+                                }
+                            }
+                        } else
+                            changed = true;
+
+                        WidgetUnifiedRemoteViewsFactory.this.messages = messages;
+
+                        if (changed)
+                            WidgetUnified.update(context);
+                    }
+                });
+            }
+        });
+    }
+
+    @Override
+    public void onCreate() {
+        Log.i("Widget factory create");
+        handler.post(new Runnable() {
+            @Override
+            public void run() {
+                owner.start();
+            }
+        });
+    }
+
+    @Override
+    public void onDataSetChanged() {
+    }
+
+    @Override
+    public void onDestroy() {
+        Log.i("Widget factory destroy");
+        handler.post(new Runnable() {
+            @Override
+            public void run() {
+                owner.destroy();
+            }
+        });
+    }
+
+    @Override
+    public int getCount() {
+        return messages.size();
+    }
+
+    @Override
+    public RemoteViews getViewAt(int position) {
+        EntityMessage message = messages.get(position);
+
+        RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.item_widget_unified);
+
+        Intent thread = new Intent(context, ActivityView.class);
+        thread.putExtra("account", message.account);
+        thread.putExtra("thread", message.thread);
+        thread.putExtra("id", message.id);
+        views.setOnClickFillInIntent(R.id.llMessage, thread);
+
+        SpannableString from = new SpannableString(MessageHelper.formatAddressesShort(message.from));
+        SpannableString time = new SpannableString(DTF.format(message.received));
+        SpannableString subject = new SpannableString(TextUtils.isEmpty(message.subject) ? "" : message.subject);
+
+        if (!message.ui_seen) {
+            from.setSpan(new StyleSpan(Typeface.BOLD), 0, from.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+            time.setSpan(new StyleSpan(Typeface.BOLD), 0, time.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+            subject.setSpan(new StyleSpan(Typeface.BOLD), 0, subject.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+        }
+
+        views.setTextViewText(R.id.tvFrom, from);
+        views.setTextViewText(R.id.tvTime, time);
+        views.setTextViewText(R.id.tvSubject, subject);
+
+        return views;
+    }
+
+    @Override
+    public RemoteViews getLoadingView() {
+        return null;
+    }
+
+    @Override
+    public int getViewTypeCount() {
+        return 1;
+    }
+
+    @Override
+    public long getItemId(int position) {
+        return messages.get(position).id;
+    }
+
+    @Override
+    public boolean hasStableIds() {
+        return true;
+    }
+}

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

@@ -0,0 +1,30 @@
+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 2018-2019 by Marcel Bokhorst (M66B)
+*/
+
+import android.content.Intent;
+import android.widget.RemoteViewsService;
+
+public class WidgetUnifiedService extends RemoteViewsService {
+    @Override
+    public RemoteViewsFactory onGetViewFactory(Intent intent) {
+        return new WidgetUnifiedRemoteViewsFactory(this.getApplicationContext());
+    }
+}

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

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/llMessage"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="6dp">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <TextView
+            android:id="@+id/tvFrom"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:ellipsize="end"
+            android:maxLines="1"
+            android:text="From"
+            android:textAppearance="@style/TextAppearance.AppCompat.Small"
+            android:textColor="@color/colorWidgetForeground" />
+
+        <TextView
+            android:id="@+id/tvTime"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:ellipsize="start"
+            android:gravity="end"
+            android:singleLine="true"
+            android:text="To"
+            android:textAppearance="@style/TextAppearance.AppCompat.Small"
+            android:textColor="@color/colorWidgetForeground" />
+    </LinearLayout>
+
+    <TextView
+        android:id="@+id/tvSubject"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:maxLines="1"
+        android:text="Subject"
+        android:textAppearance="@style/TextAppearance.AppCompat.Small"
+        android:textColor="@color/colorWidgetForeground" />
+</LinearLayout>

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

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@drawable/widget_background"
+    android:orientation="vertical">
+
+    <TextView
+        android:id="@+id/title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="center"
+        android:padding="6dp"
+        android:text="@string/title_folder_unified"
+        android:textAppearance="@style/TextAppearance.AppCompat.Medium"
+        android:textColor="@color/colorWidgetForeground"
+        android:textStyle="bold" />
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="1dp"
+        android:background="@color/colorWidgetForeground" />
+
+    <ListView
+        android:id="@+id/lv"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="6dp"
+        android:divider="@color/colorWidgetForeground"
+        android:dividerHeight="1dp" />
+</LinearLayout>

app/src/main/res/xml/widget_unified.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:initialLayout="@layout/widget_unified"
+    android:minWidth="110dp"
+    android:minHeight="110dp"
+    android:resizeMode="horizontal|vertical"
+    android:updatePeriodMillis="0"
+    android:widgetCategory="home_screen" />