Move UI behavior to uhabits-core

uhabits-android/src/androidTest/java/org/isoron/uhabits/BaseAndroidTest.java

@@ -51,7 +51,7 @@ public class BaseAndroidTest extends TestCase
 
     protected Context targetContext;
 
-    protected Preferences prefs;
+    protected AndroidPreferences prefs;
 
     protected HabitList habitList;
 

uhabits-android/src/androidTest/java/org/isoron/uhabits/activities/habits/list/ListHabitsControllerTest.java

@@ -47,7 +47,7 @@ public class ListHabitsControllerTest extends BaseAndroidTest
 
     private ListHabitsScreen screen;
 
-    private Preferences prefs;
+    private AndroidPreferences prefs;
 
     private ReminderScheduler reminderScheduler;
 
@@ -69,7 +69,7 @@ public class ListHabitsControllerTest extends BaseAndroidTest
         commandRunner = mock(CommandRunner.class);
         adapter = mock(HabitCardListAdapter.class);
         screen = mock(ListHabitsScreen.class);
-        prefs = mock(Preferences.class);
+        prefs = mock(AndroidPreferences.class);
         reminderScheduler = mock(ReminderScheduler.class);
         taskRunner = new SingleThreadTaskRunner();
         widgetUpdater = mock(WidgetUpdater.class);

uhabits-android/src/androidTest/java/org/isoron/uhabits/activities/habits/list/ListHabitsMenuTest.java

@@ -40,7 +40,7 @@ public class ListHabitsMenuTest extends BaseAndroidTest
 
     private HabitCardListAdapter adapter;
 
-    private Preferences preferences;
+    private AndroidPreferences preferences;
 
     private ThemeSwitcher themeSwitcher;
 
@@ -56,7 +56,7 @@ public class ListHabitsMenuTest extends BaseAndroidTest
         activity = mock(BaseActivity.class);
         screen = mock(ListHabitsScreen.class);
         adapter = mock(HabitCardListAdapter.class);
-        preferences = mock(Preferences.class);
+        preferences = mock(AndroidPreferences.class);
         themeSwitcher = mock(ThemeSwitcher.class);
 
         when(preferences.getShowArchived()).thenReturn(false);

uhabits-android/src/androidTest/java/org/isoron/uhabits/activities/habits/list/ListHabitsScreenTest.java

@@ -66,7 +66,7 @@ public class ListHabitsScreenTest extends BaseAndroidTest
 
     private ThemeSwitcher themeSwitcher;
 
-    private Preferences prefs;
+    private AndroidPreferences prefs;
 
     private CommandParser commandParser;
 
@@ -84,7 +84,7 @@ public class ListHabitsScreenTest extends BaseAndroidTest
         confirmDeleteDialogFactory = mock(ConfirmDeleteDialogFactory.class);
         colorPickerDialogFactory = mock(ColorPickerDialogFactory.class);
         dialogFactory = mock(EditHabitDialogFactory.class);
-        prefs = mock(Preferences.class);
+        prefs = mock(AndroidPreferences.class);
         commandParser = mock(CommandParser.class);
 
         screen = spy(new ListHabitsScreen(activity, commandRunner, rootView,

uhabits-android/src/androidTest/java/org/isoron/uhabits/activities/habits/list/controllers/CheckmarkButtonControllerTest.java

@@ -39,7 +39,7 @@ public class CheckmarkButtonControllerTest extends BaseAndroidTest
 
     private int timestamp;
 
-    private Preferences prefs;
+    private AndroidPreferences prefs;
 
     @Override
     @Before
@@ -49,7 +49,7 @@ public class CheckmarkButtonControllerTest extends BaseAndroidTest
 
         timestamp = 0;
         habit = mock(Habit.class);
-        prefs = mock(Preferences.class);
+        prefs = mock(AndroidPreferences.class);
 
         this.view = mock(CheckmarkButtonView.class);
         this.listener = mock(CheckmarkButtonController.Listener.class);

uhabits-android/src/androidTest/java/org/isoron/uhabits/activities/habits/list/views/HeaderViewTest.java

@@ -41,7 +41,7 @@ public class HeaderViewTest extends BaseViewTest
 
     private HeaderView view;
 
-    private Preferences prefs;
+    private AndroidPreferences prefs;
 
     private MidnightTimer midnightTimer;
 
@@ -50,7 +50,7 @@ public class HeaderViewTest extends BaseViewTest
     public void setUp()
     {
         super.setUp();
-        prefs = mock(Preferences.class);
+        prefs = mock(AndroidPreferences.class);
         midnightTimer = mock(MidnightTimer.class);
         view = new HeaderView(targetContext, prefs, midnightTimer);
         view.setButtonCount(5);

uhabits-android/src/androidTest/java/org/isoron/uhabits/activities/habits/show/ShowHabitsMenuTest.java

@@ -1,83 +0,0 @@
-/*
- * Copyright (C) 2017 Álinson Santos Xavier <isoron@gmail.com>
- *
- * This file is part of Loop Habit Tracker.
- *
- * Loop Habit Tracker 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.
- *
- * Loop Habit Tracker 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 this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package org.isoron.uhabits.activities.habits.show;
-
-import android.view.*;
-
-import org.isoron.androidbase.*;
-import org.isoron.uhabits.*;
-import org.isoron.uhabits.models.*;
-import org.isoron.uhabits.tasks.*;
-import org.junit.*;
-
-import static org.mockito.Matchers.any;
-import static org.mockito.Mockito.*;
-
-public class ShowHabitsMenuTest extends BaseAndroidTest
-{
-    private ShowHabitActivity activity;
-
-    private ShowHabitScreen screen;
-
-    private ShowHabitsMenu menu;
-
-    private Habit habit;
-
-    private ExportCSVTaskFactory exportCSVFactory;
-
-    private TaskRunner taskRunner;
-
-    private BaseSystem system;
-
-    @Override
-    public void setUp()
-    {
-        super.setUp();
-        activity = mock(ShowHabitActivity.class);
-        system = mock(BaseSystem.class);
-        screen = mock(ShowHabitScreen.class);
-        habit = mock(Habit.class);
-        exportCSVFactory = mock(ExportCSVTaskFactory.class);
-        taskRunner = mock(TaskRunner.class);
-        menu = new ShowHabitsMenu(activity, system, screen, habit,
-            exportCSVFactory, taskRunner);
-    }
-
-    @Test
-    public void testOnDownloadHabit()
-    {
-        onItemSelected(R.id.export);
-        verify(taskRunner).execute(any());
-    }
-
-    @Test
-    public void testOnEditHabit()
-    {
-        onItemSelected(R.id.action_edit_habit);
-        verify(screen).showEditHabitDialog();
-    }
-
-    protected void onItemSelected(int actionId)
-    {
-        MenuItem item = mock(MenuItem.class);
-        when(item.getItemId()).thenReturn(actionId);
-        menu.onItemSelected(item);
-    }
-}

uhabits-android/src/androidTest/java/org/isoron/uhabits/receivers/ReminderControllerTest.java

@@ -37,7 +37,7 @@ public class ReminderControllerTest extends BaseAndroidTest
 
     private NotificationTray notificationTray;
 
-    private Preferences preferences;
+    private AndroidPreferences preferences;
 
     @Override
     public void setUp()
@@ -46,7 +46,7 @@ public class ReminderControllerTest extends BaseAndroidTest
 
         reminderScheduler = mock(ReminderScheduler.class);
         notificationTray = mock(NotificationTray.class);
-        preferences = mock(Preferences.class);
+        preferences = mock(AndroidPreferences.class);
 
         controller = new ReminderController(reminderScheduler,
             notificationTray, preferences);

uhabits-android/src/main/java/org/isoron/androidbase/activities/BaseRootView.java

@@ -48,6 +48,8 @@ public abstract class BaseRootView extends FrameLayout
 
     private final ThemeSwitcher themeSwitcher;
 
+    boolean shouldDisplayHomeAsUp = false;
+
     public BaseRootView(@NonNull Context context)
     {
         super(context);
@@ -58,11 +60,23 @@ public abstract class BaseRootView extends FrameLayout
 
     public boolean getDisplayHomeAsUp()
     {
-        return false;
+        return shouldDisplayHomeAsUp;
+    }
+
+    public void setDisplayHomeAsUp(boolean b)
+    {
+        shouldDisplayHomeAsUp = b;
     }
 
     @NonNull
-    public abstract Toolbar getToolbar();
+    public Toolbar getToolbar()
+    {
+        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
+        if (toolbar == null) throw new RuntimeException(
+            "Your BaseRootView should have a " +
+            "toolbar with id R.id.toolbar");
+        return toolbar;
+    }
 
     public int getToolbarColor()
     {
@@ -86,7 +100,7 @@ public abstract class BaseRootView extends FrameLayout
             if (view != null) view.setVisibility(GONE);
 
             view = findViewById(R.id.headerShadow);
-            if(view != null) view.setVisibility(GONE);
+            if (view != null) view.setVisibility(GONE);
         }
     }
 }

uhabits-android/src/main/java/org/isoron/uhabits/AppComponent.java

@@ -73,7 +73,7 @@ public interface AppComponent
 
     PendingIntentFactory getPendingIntentFactory();
 
-    Preferences getPreferences();
+    AndroidPreferences getPreferences();
 
     ReminderScheduler getReminderScheduler();
 

uhabits-android/src/main/java/org/isoron/uhabits/HabitsApplication.java

@@ -109,7 +109,7 @@ public class HabitsApplication extends Application
         notificationTray = component.getNotificationTray();
         notificationTray.startListening();
 
-        Preferences prefs = component.getPreferences();
+        AndroidPreferences prefs = component.getPreferences();
         prefs.initialize();
         prefs.updateLastAppVersion();
 

uhabits-android/src/main/java/org/isoron/uhabits/activities/ThemeSwitcher.java

@@ -37,11 +37,11 @@ public class ThemeSwitcher
     @NonNull
     private final BaseActivity activity;
 
-    private Preferences preferences;
+    private AndroidPreferences preferences;
 
     @Inject
     public ThemeSwitcher(@NonNull BaseActivity activity,
-                         @NonNull Preferences preferences)
+                         @NonNull AndroidPreferences preferences)
     {
         this.activity = activity;
         this.preferences = preferences;

uhabits-android/src/main/java/org/isoron/uhabits/activities/about/AboutActivity.java

@@ -22,7 +22,8 @@ package org.isoron.uhabits.activities.about;
 import android.os.*;
 
 import org.isoron.androidbase.activities.*;
-import org.isoron.uhabits.intents.*;
+import org.isoron.uhabits.*;
+import org.isoron.uhabits.ui.about.*;
 
 /**
  * Activity that allows the user to see information about the app itself.
@@ -34,8 +35,11 @@ public class AboutActivity extends BaseActivity
     protected void onCreate(Bundle savedInstanceState)
     {
         super.onCreate(savedInstanceState);
-        AboutRootView rootView = new AboutRootView(this, new IntentFactory());
+        HabitsApplication app = (HabitsApplication) getApplication();
-        BaseScreen screen = new BaseScreen(this);
+        AppComponent cmp = app.getComponent();
+        AboutScreen screen = new AboutScreen(this, cmp.getIntentFactory());
+        AboutBehavior behavior = new AboutBehavior(cmp.getPreferences(), screen);
+        AboutRootView rootView = new AboutRootView(this, behavior);
         screen.setRootView(rootView);
         setScreen(screen);
     }

uhabits-android/src/main/java/org/isoron/uhabits/activities/about/AboutRootView.java

@@ -21,15 +21,12 @@ package org.isoron.uhabits.activities.about;
 
 import android.content.*;
 import android.support.annotation.*;
-import android.support.v7.widget.Toolbar;
 import android.widget.*;
 
 import org.isoron.androidbase.activities.*;
 import org.isoron.uhabits.BuildConfig;
-import org.isoron.uhabits.*;
 import org.isoron.uhabits.R;
-import org.isoron.uhabits.intents.*;
+import org.isoron.uhabits.ui.about.*;
-import org.isoron.uhabits.preferences.*;
 import org.isoron.uhabits.utils.*;
 
 import butterknife.*;
@@ -48,47 +45,22 @@ public class AboutRootView extends BaseRootView
     @BindView(R.id.tvSource)
     TextView tvSource;
 
-    @BindView(R.id.toolbar)
+    @NonNull
-    Toolbar toolbar;
+    private final AboutBehavior behavior;
-
-    int developerCountdown = 10;
-
-    @Nullable
-    Preferences prefs;
-
-    private final IntentFactory intents;
 
-    public AboutRootView(Context context, IntentFactory intents)
+    public AboutRootView(@NonNull Context context,
+                         @NonNull AboutBehavior behavior)
     {
         super(context);
-        this.intents = intents;
+        this.behavior = behavior;
 
         addView(inflate(getContext(), R.layout.about, null));
         ButterKnife.bind(this);
 
-        tvVersion.setText(
+        String version = getResources().getString(R.string.version_n);
-            String.format(getResources().getString(R.string.version_n),
+        tvVersion.setText(String.format(version, BuildConfig.VERSION_NAME));
-                BuildConfig.VERSION_NAME));
 
-        if (context.getApplicationContext() instanceof HabitsApplication)
+        setDisplayHomeAsUp(true);
-        {
-            HabitsApplication app =
-                (HabitsApplication) context.getApplicationContext();
-            prefs = app.getComponent().getPreferences();
-        }
-    }
-
-    @Override
-    public boolean getDisplayHomeAsUp()
-    {
-        return true;
-    }
-
-    @NonNull
-    @Override
-    public Toolbar getToolbar()
-    {
-        return toolbar;
     }
 
     @Override
@@ -104,48 +76,37 @@ public class AboutRootView extends BaseRootView
     @OnClick(R.id.tvFeedback)
     public void onClickFeedback()
     {
-        Intent intent = intents.sendFeedback(getContext());
+        behavior.onSendFeedback();
-        getContext().startActivity(intent);
     }
 
     @OnClick(R.id.tvVersion)
     public void onClickIcon()
     {
-        developerCountdown--;
+        behavior.onPressDeveloperCountdown();
-        if (developerCountdown <= 0)
-        {
-            if (prefs == null) return;
-            prefs.setDeveloper(true);
-            String text = "You are now a developer";
-            Toast.makeText(getContext(), text, Toast.LENGTH_LONG).show();
-        }
     }
 
     @OnClick(R.id.tvRate)
     public void onClickRate()
     {
-        Intent intent = intents.rateApp(getContext());
+        behavior.onRateApp();
-        getContext().startActivity(intent);
     }
 
     @OnClick(R.id.tvSource)
     public void onClickSource()
     {
-        Intent intent = intents.viewSourceCode(getContext());
+        behavior.onViewSourceCode();
-        getContext().startActivity(intent);
     }
 
     @OnClick(R.id.tvTranslate)
     public void onClickTranslate()
     {
-        Intent intent = intents.helpTranslate(getContext());
+        behavior.onTranslateApp();
-        getContext().startActivity(intent);
     }
 
     @Override
     protected void initToolbar()
     {
         super.initToolbar();
-        toolbar.setTitle(getResources().getString(R.string.about));
+        getToolbar().setTitle(getResources().getString(R.string.about));
     }
 }

uhabits-android/src/main/java/org/isoron/uhabits/activities/about/AboutScreen.java

@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2017 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker 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.
+ *
+ * Loop Habit Tracker 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 this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.uhabits.activities.about;
+
+import android.support.annotation.*;
+import android.widget.*;
+
+import org.isoron.androidbase.activities.*;
+import org.isoron.uhabits.intents.*;
+import org.isoron.uhabits.ui.about.*;
+
+import javax.inject.*;
+
+public class AboutScreen extends BaseScreen implements AboutBehavior.Screen
+{
+    @NonNull
+    private final IntentFactory intents;
+
+    @Inject
+    public AboutScreen(@NonNull BaseActivity activity,
+                       @NonNull IntentFactory intents)
+    {
+        super(activity);
+        this.intents = intents;
+    }
+
+    @Override
+    public void showMessage(AboutBehavior.Message message)
+    {
+        Toast.makeText(activity, "OK", Toast.LENGTH_LONG).show();
+    }
+
+    @Override
+    public void showRateAppWebsite()
+    {
+        activity.startActivity(intents.rateApp(activity));
+    }
+
+    @Override
+    public void showSendFeedbackScreen()
+    {
+        activity.startActivity(intents.sendFeedback(activity));
+    }
+
+    @Override
+    public void showSourceCodeWebsite()
+    {
+        activity.startActivity(intents.viewSourceCode(activity));
+    }
+
+    @Override
+    public void showTranslationWebsite()
+    {
+        activity.startActivity(intents.helpTranslate(activity));
+    }
+}

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/edit/EditHabitDialog.java

@@ -49,7 +49,7 @@ public class EditHabitDialog extends AppCompatDialogFragment
 
     protected Habit originalHabit;
 
-    protected Preferences prefs;
+    protected AndroidPreferences prefs;
 
     protected CommandRunner commandRunner;
 

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/ListHabitsActivity.java

@@ -45,7 +45,7 @@ public class ListHabitsActivity extends BaseActivity
 
     private boolean pureBlack;
 
-    private Preferences prefs;
+    private AndroidPreferences prefs;
 
     private MidnightTimer midnightTimer;
 

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/ListHabitsController.java

@@ -57,7 +57,7 @@ public class ListHabitsController
     private final HabitCardListAdapter adapter;
 
     @NonNull
-    private final Preferences prefs;
+    private final AndroidPreferences prefs;
 
     @NonNull
     private final CommandRunner commandRunner;
@@ -81,7 +81,7 @@ public class ListHabitsController
                                 @NonNull HabitList habitList,
                                 @NonNull HabitCardListAdapter adapter,
                                 @NonNull ListHabitsScreen screen,
-                                @NonNull Preferences prefs,
+                                @NonNull AndroidPreferences prefs,
                                 @NonNull ReminderScheduler reminderScheduler,
                                 @NonNull TaskRunner taskRunner,
                                 @NonNull WidgetUpdater widgetUpdater,

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/ListHabitsMenu.java

@@ -43,7 +43,7 @@ public class ListHabitsMenu extends BaseMenu
 
     private boolean showCompleted;
 
-    private final Preferences preferences;
+    private final AndroidPreferences preferences;
 
     private ThemeSwitcher themeSwitcher;
 
@@ -51,7 +51,7 @@ public class ListHabitsMenu extends BaseMenu
     public ListHabitsMenu(@NonNull BaseActivity activity,
                           @NonNull ListHabitsScreen screen,
                           @NonNull HabitCardListAdapter adapter,
-                          @NonNull Preferences preferences,
+                          @NonNull AndroidPreferences preferences,
                           @NonNull ThemeSwitcher themeSwitcher)
     {
         super(activity);

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/ListHabitsScreen.java

@@ -89,7 +89,7 @@ public class ListHabitsScreen extends BaseScreen
     private final ThemeSwitcher themeSwitcher;
 
     @NonNull
-    private Preferences prefs;
+    private AndroidPreferences prefs;
 
     @NonNull
     private final CommandParser commandParser;
@@ -103,7 +103,7 @@ public class ListHabitsScreen extends BaseScreen
                             @NonNull ConfirmDeleteDialogFactory confirmDeleteDialogFactory,
                             @NonNull ColorPickerDialogFactory colorPickerFactory,
                             @NonNull EditHabitDialogFactory editHabitDialogFactory,
-                            @NonNull Preferences prefs,
+                            @NonNull AndroidPreferences prefs,
                             @NonNull CommandParser commandParser)
     {
         super(activity);

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/controllers/CheckmarkButtonController.java

@@ -37,14 +37,14 @@ public class CheckmarkButtonController
     private Listener listener;
 
     @NonNull
-    private final Preferences prefs;
+    private final AndroidPreferences prefs;
 
     @NonNull
     private Habit habit;
 
     private long timestamp;
 
-    public CheckmarkButtonController(@Provided @NonNull Preferences prefs,
+    public CheckmarkButtonController(@Provided @NonNull AndroidPreferences prefs,
                                      @NonNull Habit habit,
                                      long timestamp)
     {

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/controllers/NumberButtonController.java

@@ -37,14 +37,14 @@ public class NumberButtonController
     private Listener listener;
 
     @NonNull
-    private final Preferences prefs;
+    private final AndroidPreferences prefs;
 
     @NonNull
     private Habit habit;
 
     private long timestamp;
 
-    public NumberButtonController(@Provided @NonNull Preferences prefs,
+    public NumberButtonController(@Provided @NonNull AndroidPreferences prefs,
                                   @NonNull Habit habit,
                                   long timestamp)
     {

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/model/HabitCardListAdapter.java

@@ -58,13 +58,13 @@ public class HabitCardListAdapter
     private final HabitCardListCache cache;
 
     @NonNull
-    private Preferences preferences;
+    private AndroidPreferences preferences;
 
     private final MidnightTimer midnightTimer;
 
     @Inject
     public HabitCardListAdapter(@NonNull HabitCardListCache cache,
-                                @NonNull Preferences preferences,
+                                @NonNull AndroidPreferences preferences,
                                 @NonNull MidnightTimer midnightTimer)
     {
         this.preferences = preferences;

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/model/HintList.java

@@ -33,7 +33,7 @@ import org.isoron.uhabits.utils.*;
 @AutoFactory
 public class HintList
 {
-    private final Preferences prefs;
+    private final AndroidPreferences prefs;
 
     @NonNull
     private final String[] hints;
@@ -43,7 +43,7 @@ public class HintList
      *
      * @param hints initial list of hints
      */
-    public HintList(@Provided @NonNull Preferences prefs,
+    public HintList(@Provided @NonNull AndroidPreferences prefs,
                     @NonNull String hints[])
     {
         this.prefs = prefs;

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/views/CheckmarkPanelView.java

@@ -39,14 +39,14 @@ import static org.isoron.uhabits.utils.ColorUtils.*;
 import static org.isoron.uhabits.utils.InterfaceUtils.getDimension;
 
 public class CheckmarkPanelView extends LinearLayout
-    implements Preferences.Listener
+    implements AndroidPreferences.Listener
 {
     private static final int LEFT_TO_RIGHT = 0;
 
     private static final int RIGHT_TO_LEFT = 1;
 
     @Nullable
-    private Preferences prefs;
+    private AndroidPreferences prefs;
 
     private int values[];
 

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/views/HeaderView.java

@@ -27,7 +27,6 @@ import android.util.*;
 
 import org.isoron.uhabits.*;
 import org.isoron.uhabits.activities.common.views.*;
-import org.isoron.uhabits.activities.habits.list.*;
 import org.isoron.uhabits.preferences.*;
 import org.isoron.uhabits.utils.*;
 
@@ -36,13 +35,13 @@ import java.util.*;
 import static org.isoron.uhabits.utils.InterfaceUtils.*;
 
 public class HeaderView extends ScrollableChart
-    implements Preferences.Listener, MidnightTimer.MidnightListener
+    implements AndroidPreferences.Listener, MidnightTimer.MidnightListener
 {
 
     private int buttonCount;
 
     @Nullable
-    private Preferences prefs;
+    private AndroidPreferences prefs;
 
     @Nullable
     private MidnightTimer midnightTimer;
@@ -52,7 +51,7 @@ public class HeaderView extends ScrollableChart
     private RectF rect;
 
     public HeaderView(@NonNull Context context,
-                      @NonNull Preferences prefs,
+                      @NonNull AndroidPreferences prefs,
                       @NonNull MidnightTimer midnightTimer)
     {
         super(context);

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/views/NumberPanelView.java

@@ -39,14 +39,14 @@ import static org.isoron.uhabits.utils.ColorUtils.*;
 import static org.isoron.uhabits.utils.InterfaceUtils.*;
 
 public class NumberPanelView extends LinearLayout
-    implements Preferences.Listener
+    implements AndroidPreferences.Listener
 {
     private static final int LEFT_TO_RIGHT = 0;
 
     private static final int RIGHT_TO_LEFT = 1;
 
     @Nullable
-    private Preferences prefs;
+    private AndroidPreferences prefs;
 
     private double values[];
 

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/show/ShowHabitActivity.java

@@ -27,6 +27,9 @@ import android.support.annotation.*;
 import org.isoron.androidbase.activities.*;
 import org.isoron.uhabits.*;
 import org.isoron.uhabits.models.*;
+import org.isoron.uhabits.ui.habits.show.*;
+
+import java.io.*;
 
 /**
  * Activity that allows the user to see more information about a single habit.
@@ -34,8 +37,24 @@ import org.isoron.uhabits.models.*;
  * Shows all the metadata for the habit, in addition to several charts.
  */
 public class ShowHabitActivity extends BaseActivity
+    implements ShowHabitMenuBehavior.System
 {
-    private HabitList habits;
+    @Nullable
+    private HabitList habitList;
+
+    @Nullable
+    private AppComponent appComponent;
+
+    @Nullable
+    private ShowHabitScreen screen;
+
+    @Override
+    public File getCSVOutputDir()
+    {
+        if(appComponent == null) throw new IllegalStateException();
+
+        return appComponent.getBaseSystem().getFilesDir("CSV");
+    }
 
     @Override
     protected void onCreate(Bundle savedInstanceState)
@@ -43,7 +62,8 @@ public class ShowHabitActivity extends BaseActivity
         super.onCreate(savedInstanceState);
 
         HabitsApplication app = (HabitsApplication) getApplicationContext();
-        habits = app.getComponent().getHabitList();
+        appComponent = app.getComponent();
+        habitList = appComponent.getHabitList();
         Habit habit = getHabitFromIntent();
 
         ShowHabitComponent component = DaggerShowHabitComponent
@@ -52,22 +72,30 @@ public class ShowHabitActivity extends BaseActivity
             .showHabitModule(new ShowHabitModule(this, habit))
             .build();
 
-        ShowHabitRootView rootView = component.getRootView();
+        screen = component.getScreen();
-        ShowHabitScreen screen = component.getScreen();
-
-        setScreen(screen);
         screen.setMenu(component.getMenu());
         screen.setController(component.getController());
-        rootView.setController(component.getController());
 
+        component.getRootView().setController(component.getController());
+        setScreen(screen);
+    }
+
+    @Override
+    protected void onResume()
+    {
+        if(screen == null) throw new IllegalStateException();
+
+        super.onResume();
         screen.reattachDialogs();
     }
 
     @NonNull
     private Habit getHabitFromIntent()
     {
+        if(habitList == null) throw new IllegalStateException();
+
         Uri data = getIntent().getData();
-        Habit habit = habits.getById(ContentUris.parseId(data));
+        Habit habit = habitList.getById(ContentUris.parseId(data));
         if (habit == null) throw new RuntimeException("habit not found");
         return habit;
     }

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/show/ShowHabitComponent.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 Álinson Santos Xavier <isoron@gmail.com>
+ * Copyright (C) 2017 Álinson Santos Xavier <isoron@gmail.com>
  *
  * This file is part of Loop Habit Tracker.
  *
@@ -19,6 +19,8 @@
 
 package org.isoron.uhabits.activities.habits.show;
 
+import android.support.annotation.*;
+
 import org.isoron.androidbase.activities.*;
 import org.isoron.uhabits.*;
 
@@ -29,11 +31,15 @@ import dagger.*;
            dependencies = { AppComponent.class })
 public interface ShowHabitComponent
 {
+    @NonNull
     ShowHabitController getController();
 
+    @NonNull
     ShowHabitsMenu getMenu();
 
+    @NonNull
     ShowHabitRootView getRootView();
 
+    @NonNull
     ShowHabitScreen getScreen();
 }

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/show/ShowHabitController.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 Álinson Santos Xavier <isoron@gmail.com>
+ * Copyright (C) 2017 Álinson Santos Xavier <isoron@gmail.com>
  *
  * This file is part of Loop Habit Tracker.
  *
@@ -21,50 +21,39 @@ package org.isoron.uhabits.activities.habits.show;
 
 import android.support.annotation.*;
 
-import org.isoron.androidbase.activities.*;
 import org.isoron.uhabits.activities.common.dialogs.*;
-import org.isoron.uhabits.commands.*;
+import org.isoron.uhabits.activities.habits.show.views.*;
-import org.isoron.uhabits.models.*;
+import org.isoron.uhabits.ui.habits.show.*;
 
 import javax.inject.*;
 
-@ActivityScope
 public class ShowHabitController
-    implements ShowHabitRootView.Controller, HistoryEditorDialog.Controller
+    implements HistoryCard.Controller, HistoryEditorDialog.Controller
 {
-    @NonNull
+    private ShowHabitBehavior behavior;
-    private final ShowHabitScreen screen;
 
-    @NonNull
+    private ShowHabitScreen screen;
-    private final Habit habit;
-
-    @NonNull
-    private final CommandRunner commandRunner;
 
     @Inject
-    public ShowHabitController(@NonNull ShowHabitScreen screen,
+    public ShowHabitController(@NonNull ShowHabitBehavior behavior,
-                               @NonNull CommandRunner commandRunner,
+                               @NonNull ShowHabitScreen screen)
-                               @NonNull Habit habit)
     {
+        this.behavior = behavior;
         this.screen = screen;
-        this.habit = habit;
-        this.commandRunner = commandRunner;
     }
 
     @Override
     public void onEditHistoryButtonClick()
     {
-        screen.showEditHistoryDialog();
+        behavior.onEditHistory();
     }
 
     @Override
     public void onToggleCheckmark(long timestamp)
     {
-        commandRunner.execute(new ToggleRepetitionCommand(habit, timestamp),
+        behavior.onToggleCheckmark(timestamp);
-            null);
     }
 
-    @Override
     public void onToolbarChanged()
     {
         screen.invalidateToolbar();

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/show/ShowHabitModule.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 Álinson Santos Xavier <isoron@gmail.com>
+ * Copyright (C) 2017 Álinson Santos Xavier <isoron@gmail.com>
  *
  * This file is part of Loop Habit Tracker.
  *
@@ -19,17 +19,20 @@
 
 package org.isoron.uhabits.activities.habits.show;
 
+import android.support.annotation.*;
+
 import org.isoron.androidbase.activities.*;
 import org.isoron.uhabits.models.*;
+import org.isoron.uhabits.ui.habits.show.*;
 
 import dagger.*;
 
 @Module
 public class ShowHabitModule extends ActivityModule
 {
-    private final Habit habit;
+    private Habit habit;
 
-    public ShowHabitModule(BaseActivity activity, Habit habit)
+    public ShowHabitModule(@NonNull BaseActivity activity, @NonNull Habit habit)
     {
         super(activity);
         this.habit = habit;
@@ -40,4 +43,22 @@ public class ShowHabitModule extends ActivityModule
     {
         return habit;
     }
+
+    @Provides
+    public ShowHabitBehavior.Screen getScreen(ShowHabitScreen screen)
+    {
+        return screen;
+    }
+
+    @Provides
+    public ShowHabitMenuBehavior.Screen getMenuScreen(ShowHabitScreen screen)
+    {
+        return screen;
+    }
+
+    @Provides
+    public ShowHabitMenuBehavior.System getSystem(BaseActivity activity)
+    {
+        return (ShowHabitActivity) activity;
+    }
 }

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/show/ShowHabitRootView.java

@@ -65,8 +65,8 @@ public class ShowHabitRootView extends BaseRootView
     @BindView(R.id.toolbar)
     Toolbar toolbar;
 
-    @NonNull
+    @Nullable
-    private Controller controller;
+    private ShowHabitController controller;
 
     @Inject
     public ShowHabitRootView(@NonNull @ActivityContext Context context,
@@ -78,25 +78,11 @@ public class ShowHabitRootView extends BaseRootView
         addView(inflate(getContext(), R.layout.show_habit, null));
         ButterKnife.bind(this);
 
-        controller = new Controller() {};
+        setDisplayHomeAsUp(true);
-
         initCards();
         initToolbar();
     }
 
-    @Override
-    public boolean getDisplayHomeAsUp()
-    {
-        return true;
-    }
-
-    @NonNull
-    @Override
-    public Toolbar getToolbar()
-    {
-        return toolbar;
-    }
-
     @Override
     public int getToolbarColor()
     {
@@ -114,10 +100,10 @@ public class ShowHabitRootView extends BaseRootView
             toolbar.setTitle(habit.getName());
         });
 
-        controller.onToolbarChanged();
+        if(controller != null) controller.onToolbarChanged();
     }
 
-    public void setController(@NonNull Controller controller)
+    public void setController(@NonNull ShowHabitController controller)
     {
         this.controller = controller;
         historyCard.setController(controller);
@@ -158,9 +144,4 @@ public class ShowHabitRootView extends BaseRootView
         else
             barCard.setVisibility(GONE);
     }
-
-    public interface Controller extends HistoryCard.Controller
-    {
-        default void onToolbarChanged() {}
-    }
 }

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/show/ShowHabitScreen.java

@@ -22,14 +22,17 @@ package org.isoron.uhabits.activities.habits.show;
 import android.support.annotation.*;
 
 import org.isoron.androidbase.activities.*;
+import org.isoron.uhabits.*;
 import org.isoron.uhabits.activities.common.dialogs.*;
 import org.isoron.uhabits.activities.habits.edit.*;
 import org.isoron.uhabits.models.*;
+import org.isoron.uhabits.ui.habits.show.*;
 
 import javax.inject.*;
 
 @ActivityScope
 public class ShowHabitScreen extends BaseScreen
+    implements ShowHabitMenuBehavior.Screen, ShowHabitBehavior.Screen
 {
     @NonNull
     private final Habit habit;
@@ -44,8 +47,7 @@ public class ShowHabitScreen extends BaseScreen
     public ShowHabitScreen(@NonNull BaseActivity activity,
                            @NonNull Habit habit,
                            @NonNull ShowHabitRootView view,
-                           @NonNull
+                           @NonNull EditHabitDialogFactory editHabitDialogFactory)
-                               EditHabitDialogFactory editHabitDialogFactory)
     {
         super(activity);
         setRootView(view);
@@ -53,37 +55,46 @@ public class ShowHabitScreen extends BaseScreen
         this.habit = habit;
     }
 
-    public void setController(@NonNull ShowHabitController controller)
-    {
-        this.controller = controller;
-    }
-
     public void reattachDialogs()
     {
-        if(controller == null) throw new IllegalStateException();
+        if (controller == null) throw new IllegalStateException();
 
         HistoryEditorDialog historyEditor = (HistoryEditorDialog) activity
             .getSupportFragmentManager()
             .findFragmentByTag("historyEditor");
 
-        if (historyEditor != null)
+        if (historyEditor != null) historyEditor.setController(controller);
-            historyEditor.setController(controller);
     }
 
-    public void showEditHabitDialog()
+    public void setController(@NonNull ShowHabitController controller)
     {
-        activity.showDialog(
+        this.controller = controller;
-            editHabitDialogFactory.edit(habit),
-            "editHabit");
     }
 
-    public void showEditHistoryDialog()
+    @Override
+    public void showEditHabitScreen(@NonNull Habit habit)
     {
-        if(controller == null) throw new IllegalStateException();
+        activity.showDialog(editHabitDialogFactory.edit(habit), "editHabit");
+    }
+
+    @Override
+    public void showEditHistoryScreen()
+    {
+        if (controller == null) throw new IllegalStateException();
 
         HistoryEditorDialog dialog = new HistoryEditorDialog();
         dialog.setHabit(habit);
         dialog.setController(controller);
         dialog.show(activity.getSupportFragmentManager(), "historyEditor");
     }
+
+    @Override
+    public void showMessage(ShowHabitMenuBehavior.Message m)
+    {
+        switch (m)
+        {
+            case COULD_NOT_EXPORT:
+                showMessage(R.string.could_not_export);
+        }
+    }
 }

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/show/ShowHabitsMenu.java

@@ -22,14 +22,9 @@ package org.isoron.uhabits.activities.habits.show;
 import android.support.annotation.*;
 import android.view.*;
 
-import org.isoron.androidbase.*;
 import org.isoron.androidbase.activities.*;
 import org.isoron.uhabits.*;
-import org.isoron.uhabits.models.*;
+import org.isoron.uhabits.ui.habits.show.*;
-import org.isoron.uhabits.tasks.*;
-
-import java.io.*;
-import java.util.*;
 
 import javax.inject.*;
 
@@ -37,47 +32,14 @@ import javax.inject.*;
 public class ShowHabitsMenu extends BaseMenu
 {
     @NonNull
-    private final BaseSystem system;
+    ShowHabitMenuBehavior behavior;
-
-    @NonNull
-    private final ShowHabitScreen screen;
-
-    @NonNull
-    private final Habit habit;
-
-    @NonNull
-    private final TaskRunner taskRunner;
-
-    @NonNull
-    private ExportCSVTaskFactory exportCSVFactory;
 
     @Inject
     public ShowHabitsMenu(@NonNull BaseActivity activity,
-                          @NonNull BaseSystem system,
+                          @NonNull ShowHabitMenuBehavior behavior)
-                          @NonNull ShowHabitScreen screen,
-                          @NonNull Habit habit,
-                          @NonNull ExportCSVTaskFactory exportCSVFactory,
-                          @NonNull TaskRunner taskRunner)
     {
         super(activity);
-        this.system = system;
+        this.behavior = behavior;
-        this.screen = screen;
-        this.habit = habit;
-        this.taskRunner = taskRunner;
-        this.exportCSVFactory = exportCSVFactory;
-    }
-
-    public void exportHabit()
-    {
-        List<Habit> selected = new LinkedList<>();
-        selected.add(habit);
-        File outputDir = system.getFilesDir("CSV");
-        ExportCSVTask task = exportCSVFactory.create(selected,
-            outputDir, filename -> {
-            if (filename != null) screen.showSendFileScreen(filename);
-            else screen.showMessage(R.string.could_not_export);
-        });
-        taskRunner.execute(task);
     }
 
     @Override
@@ -86,11 +48,11 @@ public class ShowHabitsMenu extends BaseMenu
         switch (item.getItemId())
         {
             case R.id.action_edit_habit:
-                screen.showEditHabitDialog();
+                behavior.onEditHabit();
                 return true;
 
             case R.id.export:
-                this.exportHabit();
+                behavior.onExportCSV();
                 return true;
 
             default:

uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/show/views/ScoreCard.java

@@ -55,7 +55,7 @@ public class ScoreCard extends HabitCard
     private TaskRunner taskRunner;
 
     @Nullable
-    private Preferences prefs;
+    private AndroidPreferences prefs;
 
     public ScoreCard(Context context)
     {

uhabits-android/src/main/java/org/isoron/uhabits/activities/settings/SettingsFragment.java

@@ -41,7 +41,7 @@ public class SettingsFragment extends PreferenceFragmentCompat
     private SharedPreferences sharedPrefs;
 
     @Nullable
-    private Preferences prefs;
+    private AndroidPreferences prefs;
 
     @Override
     public void onActivityResult(int requestCode, int resultCode, Intent data)

uhabits-android/src/main/java/org/isoron/uhabits/notifications/NotificationTray.java

@@ -44,7 +44,7 @@ import static org.isoron.uhabits.notifications.RingtoneManager.*;
 
 @AppScope
 public class NotificationTray
-    implements CommandRunner.Listener, Preferences.Listener
+    implements CommandRunner.Listener, AndroidPreferences.Listener
 {
     @NonNull
     private final Context context;
@@ -59,7 +59,7 @@ public class NotificationTray
     private final CommandRunner commandRunner;
 
     @NonNull
-    private final Preferences preferences;
+    private final AndroidPreferences preferences;
 
     @NonNull
     private final HashMap<Habit, NotificationData> active;
@@ -69,7 +69,7 @@ public class NotificationTray
                             @NonNull TaskRunner taskRunner,
                             @NonNull PendingIntentFactory pendingIntents,
                             @NonNull CommandRunner commandRunner,
-                            @NonNull Preferences preferences)
+                            @NonNull AndroidPreferences preferences)
     {
         this.context = context;
         this.taskRunner = taskRunner;

uhabits-android/src/main/java/org/isoron/uhabits/preferences/AndroidPreferences.java

@@ -32,8 +32,8 @@ import java.util.*;
 import javax.inject.*;
 
 @AppScope
-public class Preferences
+public class AndroidPreferences
-    implements SharedPreferences.OnSharedPreferenceChangeListener
+    implements SharedPreferences.OnSharedPreferenceChangeListener, Preferences
 {
     private final Context context;
 
@@ -44,7 +44,7 @@ public class Preferences
     private LinkedList<Listener> listeners;
 
     @Inject
-    public Preferences(@AppContext Context context)
+    public AndroidPreferences(@AppContext Context context)
     {
         this.context = context;
         listeners = new LinkedList<>();
@@ -78,26 +78,6 @@ public class Preferences
         }
     }
 
-    public String getSyncAddress()
-    {
-        return prefs.getString("pref_sync_address", "https://sync.loophabits.org:4000");
-    }
-
-    public String getSyncClientId()
-    {
-        String id = prefs.getString("pref_sync_client_id", "");
-        if(!id.isEmpty()) return id;
-
-        id = UUID.randomUUID().toString();
-        prefs.edit().putString("pref_sync_client_id", id).apply();
-        return id;
-    }
-
-    public boolean isSyncFeatureEnabled()
-    {
-        return prefs.getBoolean("pref_feature_sync", false);
-    }
-
     public void setDefaultOrder(HabitList.Order order)
     {
         prefs.edit().putString("pref_default_order", order.name()).apply();
@@ -171,6 +151,22 @@ public class Preferences
         return Long.parseLong(prefs.getString("pref_snooze_interval", "15"));
     }
 
+    public String getSyncAddress()
+    {
+        return prefs.getString("pref_sync_address",
+            "https://sync.loophabits.org:4000");
+    }
+
+    public String getSyncClientId()
+    {
+        String id = prefs.getString("pref_sync_client_id", "");
+        if (!id.isEmpty()) return id;
+
+        id = UUID.randomUUID().toString();
+        prefs.edit().putString("pref_sync_client_id", id).apply();
+        return id;
+    }
+
     public String getSyncKey()
     {
         return prefs.getString("pref_sync_key", "");
@@ -232,6 +228,11 @@ public class Preferences
         return prefs.getBoolean("pref_short_toggle", false);
     }
 
+    public boolean isSyncFeatureEnabled()
+    {
+        return prefs.getBoolean("pref_feature_sync", false);
+    }
+
     @Override
     public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,
                                           String key)

uhabits-android/src/main/java/org/isoron/uhabits/receivers/PebbleReceiver.java

@@ -53,7 +53,7 @@ public class PebbleReceiver extends PebbleDataReceiver
 
     private HabitList filteredHabits;
 
-    private Preferences prefs;
+    private AndroidPreferences prefs;
 
     public PebbleReceiver()
     {

uhabits-android/src/main/java/org/isoron/uhabits/receivers/ReminderController.java

@@ -37,12 +37,12 @@ public class ReminderController
     @NonNull
     private final NotificationTray notificationTray;
 
-    private Preferences preferences;
+    private AndroidPreferences preferences;
 
     @Inject
     public ReminderController(@NonNull ReminderScheduler reminderScheduler,
                               @NonNull NotificationTray notificationTray,
-                              @NonNull Preferences preferences)
+                              @NonNull AndroidPreferences preferences)
     {
         this.reminderScheduler = reminderScheduler;
         this.notificationTray = notificationTray;

uhabits-android/src/main/java/org/isoron/uhabits/receivers/WidgetReceiver.java

@@ -61,7 +61,7 @@ public class WidgetReceiver extends BroadcastReceiver
 
         IntentParser parser = app.getComponent().getIntentParser();
         WidgetController controller = component.getWidgetController();
-        Preferences prefs = app.getComponent().getPreferences();
+        AndroidPreferences prefs = app.getComponent().getPreferences();
 
         if(prefs.isSyncFeatureEnabled())
             context.startService(new Intent(context, SyncService.class));

uhabits-android/src/main/java/org/isoron/uhabits/sync/SyncManager.java

@@ -72,7 +72,7 @@ public class SyncManager implements CommandRunner.Listener
     private boolean readyToEmit = false;
 
     @NonNull
-    private final Preferences prefs;
+    private final AndroidPreferences prefs;
 
     @NonNull
     private CommandRunner commandRunner;
@@ -86,7 +86,7 @@ public class SyncManager implements CommandRunner.Listener
 
     @Inject
     public SyncManager(@NonNull BaseSystem system,
-                       @NonNull Preferences prefs,
+                       @NonNull AndroidPreferences prefs,
                        @NonNull CommandRunner commandRunner,
                        @NonNull CommandParser commandParser)
     {

uhabits-android/src/main/java/org/isoron/uhabits/sync/SyncService.java

@@ -29,11 +29,11 @@ import org.isoron.uhabits.*;
 import org.isoron.uhabits.preferences.*;
 import org.isoron.uhabits.receivers.*;
 
-public class SyncService extends Service implements Preferences.Listener
+public class SyncService extends Service implements AndroidPreferences.Listener
 {
     private SyncManager syncManager;
 
-    private Preferences prefs;
+    private AndroidPreferences prefs;
 
     private ConnectivityReceiver connectivityReceiver;
 

uhabits-android/src/main/java/org/isoron/uhabits/widgets/ScoreWidget.java

@@ -39,7 +39,7 @@ public class ScoreWidget extends BaseWidget
     @NonNull
     private Habit habit;
 
-    private final Preferences prefs;
+    private final AndroidPreferences prefs;
 
     public ScoreWidget(@NonNull Context context, int id, @NonNull Habit habit)
     {

uhabits-core/build.gradle

@@ -12,6 +12,7 @@ dependencies {
 
     testImplementation 'junit:junit:4+'
     testImplementation 'org.hamcrest:hamcrest-library:1.4-atlassian-1'
+    testImplementation 'org.apache.commons:commons-io:1.3.2'
     testImplementation 'org.mockito:mockito-core:2.8.9'
     testImplementation 'org.json:json:20160810'
 

uhabits-core/src/main/java/org/isoron/uhabits/preferences/Preferences.java

@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2017 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker 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.
+ *
+ * Loop Habit Tracker 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 this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.uhabits.preferences;
+
+public interface Preferences
+{
+
+    void setDeveloper(boolean isDeveloper);
+}

uhabits-core/src/main/java/org/isoron/uhabits/ui/about/AboutBehavior.java

@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2017 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker 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.
+ *
+ * Loop Habit Tracker 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 this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.uhabits.ui.about;
+
+import android.support.annotation.*;
+
+import org.isoron.uhabits.preferences.*;
+
+public class AboutBehavior
+{
+    private int developerCountdown = 5;
+
+    @NonNull
+    private Preferences prefs;
+
+    @NonNull
+    private Screen screen;
+
+    public AboutBehavior(@NonNull Preferences prefs, @NonNull Screen screen)
+    {
+        this.prefs = prefs;
+        this.screen = screen;
+    }
+
+    public void onPressDeveloperCountdown()
+    {
+        developerCountdown--;
+        if (developerCountdown <= 0)
+        {
+            prefs.setDeveloper(true);
+            screen.showMessage(Message.YOU_ARE_NOW_A_DEVELOPER);
+        }
+    }
+
+    public void onRateApp()
+    {
+        screen.showRateAppWebsite();
+    }
+
+    public void onSendFeedback()
+    {
+        screen.showSendFeedbackScreen();
+    }
+
+    public void onTranslateApp()
+    {
+        screen.showTranslationWebsite();
+    }
+
+    public void onViewSourceCode()
+    {
+        screen.showSourceCodeWebsite();
+    }
+
+    public enum Message
+    {
+        YOU_ARE_NOW_A_DEVELOPER
+    }
+
+    public interface Screen
+    {
+        void showMessage(Message message);
+
+        void showRateAppWebsite();
+
+        void showSendFeedbackScreen();
+
+        void showSourceCodeWebsite();
+
+        void showTranslationWebsite();
+    }
+
+}

uhabits-core/src/main/java/org/isoron/uhabits/ui/habits/show/ShowHabitBehavior.java

@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2017 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker 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.
+ *
+ * Loop Habit Tracker 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 this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.uhabits.ui.habits.show;
+
+import android.support.annotation.*;
+
+import org.isoron.uhabits.commands.*;
+import org.isoron.uhabits.models.*;
+
+import javax.inject.*;
+
+public class ShowHabitBehavior
+{
+    @NonNull
+    private final Habit habit;
+
+    @NonNull
+    private final CommandRunner commandRunner;
+
+    @NonNull
+    private Screen screen;
+
+    @Inject
+    public ShowHabitBehavior(@NonNull CommandRunner commandRunner,
+                             @NonNull Habit habit,
+                             @NonNull Screen screen)
+    {
+        this.habit = habit;
+        this.commandRunner = commandRunner;
+        this.screen = screen;
+    }
+
+    public void onEditHistory()
+    {
+        screen.showEditHistoryScreen();
+    }
+
+    public void onToggleCheckmark(long timestamp)
+    {
+        commandRunner.execute(new ToggleRepetitionCommand(habit, timestamp),
+            null);
+    }
+
+    public interface Screen
+    {
+        void showEditHistoryScreen();
+    }
+}

uhabits-core/src/main/java/org/isoron/uhabits/ui/habits/show/ShowHabitMenuBehavior.java

@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2017 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker 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.
+ *
+ * Loop Habit Tracker 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 this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.uhabits.ui.habits.show;
+
+import android.support.annotation.*;
+
+import org.isoron.uhabits.models.*;
+import org.isoron.uhabits.tasks.*;
+
+import java.io.*;
+import java.util.*;
+
+import javax.inject.*;
+
+public class ShowHabitMenuBehavior
+{
+    private HabitList habitList;
+
+    @NonNull
+    private final Habit habit;
+
+    @NonNull
+    private final TaskRunner taskRunner;
+
+    @NonNull
+    private Screen screen;
+
+    @NonNull
+    private System system;
+
+    @Inject
+    public ShowHabitMenuBehavior(@NonNull HabitList habitList,
+                                 @NonNull Habit habit,
+                                 @NonNull TaskRunner taskRunner,
+                                 @NonNull Screen screen,
+                                 @NonNull System system)
+    {
+        this.habitList = habitList;
+        this.habit = habit;
+        this.taskRunner = taskRunner;
+        this.screen = screen;
+        this.system = system;
+    }
+
+    public void onEditHabit()
+    {
+        screen.showEditHabitScreen(habit);
+    }
+
+    public void onExportCSV()
+    {
+        List<Habit> selected = Collections.singletonList(habit);
+        File outputDir = system.getCSVOutputDir();
+
+        taskRunner.execute(
+            new ExportCSVTask(habitList, selected, outputDir, filename ->
+            {
+                if (filename != null) screen.showSendFileScreen(filename);
+                else screen.showMessage(Message.COULD_NOT_EXPORT);
+            }));
+    }
+
+    public enum Message
+    {
+        COULD_NOT_EXPORT
+    }
+
+    public interface Screen
+    {
+        void showEditHabitScreen(@NonNull Habit habit);
+
+        void showMessage(Message m);
+
+        void showSendFileScreen(String filename);
+    }
+
+    public interface System
+    {
+        File getCSVOutputDir();
+    }
+}

uhabits-core/src/test/java/org/isoron/uhabits/BaseUnitTest.java

@@ -21,6 +21,7 @@ package org.isoron.uhabits;
 
 import org.isoron.uhabits.models.*;
 import org.isoron.uhabits.models.memory.*;
+import org.isoron.uhabits.tasks.*;
 import org.isoron.uhabits.utils.*;
 import org.junit.*;
 
@@ -34,6 +35,8 @@ public class BaseUnitTest
 
     protected MemoryModelFactory modelFactory;
 
+    protected SingleThreadTaskRunner taskRunner;
+
     @Before
     public void setUp()
     {
@@ -44,6 +47,7 @@ public class BaseUnitTest
         modelFactory = new MemoryModelFactory();
         habitList = modelFactory.buildHabitList();
         fixtures = new HabitFixtures(modelFactory);
+        taskRunner = new SingleThreadTaskRunner();
     }
 
     @After

uhabits-core/src/test/java/org/isoron/uhabits/ui/habits/show/ShowHabitMenuBehaviorTest.java

@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2017 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker 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.
+ *
+ * Loop Habit Tracker 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 this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.uhabits.ui.habits.show;
+
+import org.isoron.uhabits.*;
+import org.isoron.uhabits.models.*;
+import org.junit.*;
+
+import java.io.*;
+
+import static java.nio.file.Files.*;
+import static org.apache.commons.io.FileUtils.*;
+import static org.hamcrest.CoreMatchers.equalTo;
+import static org.junit.Assert.assertThat;
+import static org.mockito.Mockito.*;
+
+public class ShowHabitMenuBehaviorTest extends BaseUnitTest
+{
+    private ShowHabitMenuBehavior.System system;
+
+    private ShowHabitMenuBehavior.Screen screen;
+
+    private Habit habit;
+
+    private ShowHabitMenuBehavior menu;
+
+    @Override
+    public void setUp()
+    {
+        super.setUp();
+        system = mock(ShowHabitMenuBehavior.System.class);
+        screen = mock(ShowHabitMenuBehavior.Screen.class);
+
+        habit = fixtures.createShortHabit();
+        menu = new ShowHabitMenuBehavior(habitList, habit, taskRunner, screen,
+            system);
+    }
+
+    @Test
+    public void testOnEditHabit()
+    {
+        menu.onEditHabit();
+        verify(screen).showEditHabitScreen(habit);
+    }
+
+    @Test
+    public void testOnExport() throws Exception
+    {
+        File outputDir = createTempDirectory("CSV").toFile();
+        when(system.getCSVOutputDir()).thenReturn(outputDir);
+        menu.onExportCSV();
+        assertThat(listFiles(outputDir, null, false).size(), equalTo(1));
+        deleteDirectory(outputDir);
+    }
+}