Implement habits archival

app/src/main/AndroidManifest.xml

@@ -24,7 +24,7 @@
 
         <meta-data
             android:name="AA_DB_VERSION"
-            android:value="6"/>
+            android:value="7"/>
 
         <activity
             android:name=".MainActivity"

app/src/main/assets/migrations/7.sql

@@ -0,0 +1 @@
+alter table habits add column archived integer not null default 0;

app/src/main/java/org/isoron/uhabits/models/Habit.java

@@ -59,6 +59,9 @@ public class Habit extends Model
     @Column(name = "highlight")
     public Integer highlight;
 
+    @Column(name = "archived")
+    public Integer archived;
+
     public Habit(Habit model)
     {
         copyAttributes(model);
@@ -69,6 +72,7 @@ public class Habit extends Model
         this.color = ColorHelper.palette[7];
         this.position = Habit.getCount();
         this.highlight = 0;
+        this.archived = 0;
     }
 
     public static Habit get(Long id)
@@ -84,7 +88,7 @@ public class Habit extends Model
 
     protected static From select()
     {
-        return new Select().from(Habit.class).orderBy("position");
+        return new Select().from(Habit.class).where("archived = 0").orderBy("position");
     }
 
     public static int getCount()
@@ -178,7 +182,6 @@ public class Habit extends Model
         this.highlight = model.highlight;
     }
 
-
     public void save(Long id)
     {
         save();
@@ -282,6 +285,18 @@ public class Habit extends Model
         deleteScoresNewerThan(timestamp);
     }
 
+    public void archive()
+    {
+        archived = 1;
+        save();
+    }
+
+    public void unarchive()
+    {
+        archived = 0;
+        save();
+    }
+
     public void toggleRepetitionToday()
     {
         toggleRepetition(DateHelper.getStartOfToday());
@@ -552,4 +567,31 @@ public class Habit extends Model
             execute();
         }
     }
+
+    public class ArchiveCommand extends Command
+    {
+        @Override
+        public void execute()
+        {
+            archive();
+            Habit.rebuildOrder();
+        }
+
+        @Override
+        public void undo()
+        {
+            unarchive();
+            Habit.rebuildOrder();
+        }
+
+        public Integer getExecuteStringId()
+        {
+            return R.string.toast_habit_archived;
+        }
+
+        public Integer getUndoStringId()
+        {
+            return R.string.toast_habit_unarchived;
+        }
+    }
 }

app/src/main/res/menu/show_habits_context.xml

@@ -6,8 +6,8 @@
         android:title="@string/edit">
     </item>
     <item
-        android:id="@+id/action_delete_habit"
+        android:id="@+id/action_archive_habit"
-        android:title="@string/delete">
+        android:title="@string/archive">
     </item>
 
 </menu>

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

@@ -5,6 +5,7 @@
     <string name="action_settings">Settings</string>
     <string name="edit">Edit</string>
     <string name="delete">Delete</string>
+    <string name="archive">Archive</string>
     <string name="add_habit">Add habit</string>
     <string name="color_picker_default_title">Select a Color</string>
     <string name="color_swatch_description">Color <xliff:g id="color_index" example="14">%1$d</xliff:g></string>
@@ -16,6 +17,8 @@
     <string name="toast_habit_changed">Habit changed.</string>
     <string name="toast_habit_changed_back">Habit changed back.</string>
     <string name="toast_repetition_toggled">Repetition toggled.</string>
+    <string name="toast_habit_archived">Habit archived.</string>
+    <string name="toast_habit_unarchived">Habit unarchived.</string>
 
     <!-- Date and time picker -->
     <string name="done_label">Done</string>