End of timelines are now detected correctly. Also, duplicate notifications/accounts are prevented.

app/src/main/java/com/keylesspalace/tusky/Account.java

@@ -73,4 +73,20 @@ public class Account {
         }
         return accounts;
     }
+
+    @Override
+    public int hashCode() {
+        return id.hashCode();
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        if (this.id == null) {
+            return this == other;
+        } else if (!(other instanceof Account)) {
+            return false;
+        }
+        Account account = (Account) other;
+        return account.id.equals(this.id);
+    }
 }

app/src/main/java/com/keylesspalace/tusky/AccountAdapter.java

@@ -71,6 +71,7 @@ public class AccountAdapter extends RecyclerView.Adapter {
             FooterViewHolder holder = (FooterViewHolder) viewHolder;
             holder.setupButton(footerActionListener);
             holder.setRetryMessage(R.string.footer_retry_accounts);
+            holder.setEndOfTimelineMessage(R.string.footer_end_of_accounts);
         }
     }
 

app/src/main/java/com/keylesspalace/tusky/AccountFragment.java

@@ -46,6 +46,7 @@ import java.util.Map;
 public class AccountFragment extends Fragment implements AccountActionListener,
         FooterActionListener {
     private static final String TAG = "Account";
+    private static int EXPECTED_ACCOUNTS_FETCHED = 20;
 
     public enum Type {
         FOLLOWS,
@@ -200,20 +201,24 @@ public class AccountFragment extends Fragment implements AccountActionListener,
         } else {
             adapter.update(accounts);
         }
-        showFetchAccountsRetry(false);
+        if (accounts.size() >= EXPECTED_ACCOUNTS_FETCHED) {
+            setFetchTimelineState(FooterViewHolder.State.LOADING);
+        } else {
+            setFetchTimelineState(FooterViewHolder.State.END_OF_TIMELINE);
+        }
     }
 
     private void onFetchAccountsFailure(Exception exception) {
-        showFetchAccountsRetry(true);
+        setFetchTimelineState(FooterViewHolder.State.RETRY);
         Log.e(TAG, "Fetch failure: " + exception.getMessage());
     }
 
-    private void showFetchAccountsRetry(boolean show) {
+    private void setFetchTimelineState(FooterViewHolder.State state) {
         RecyclerView.ViewHolder viewHolder =
                 recyclerView.findViewHolderForAdapterPosition(adapter.getItemCount() - 1);
         if (viewHolder != null) {
             FooterViewHolder holder = (FooterViewHolder) viewHolder;
-            holder.showRetry(show);
+            holder.setState(state);
         }
     }
 

app/src/main/java/com/keylesspalace/tusky/FooterViewHolder.java

@@ -27,6 +27,13 @@ public class FooterViewHolder extends RecyclerView.ViewHolder {
     private TextView retryMessage;
     private Button retry;
     private ProgressBar progressBar;
+    private TextView endOfTimelineMessage;
+
+    enum State {
+        LOADING,
+        RETRY,
+        END_OF_TIMELINE,
+    }
 
     public FooterViewHolder(View itemView) {
         super(itemView);
@@ -35,6 +42,7 @@ public class FooterViewHolder extends RecyclerView.ViewHolder {
         retry = (Button) itemView.findViewById(R.id.footer_retry_button);
         progressBar = (ProgressBar) itemView.findViewById(R.id.footer_progress_bar);
         progressBar.setIndeterminate(true);
+        endOfTimelineMessage = (TextView) itemView.findViewById(R.id.footer_end_of_timeline_text);
     }
 
     public void setupButton(final FooterActionListener listener) {
@@ -50,13 +58,30 @@ public class FooterViewHolder extends RecyclerView.ViewHolder {
         retryMessage.setText(messageId);
     }
 
-    public void showRetry(boolean show) {
-        if (!show) {
-            retryBar.setVisibility(View.GONE);
-            progressBar.setVisibility(View.VISIBLE);
-        } else {
-            retryBar.setVisibility(View.VISIBLE);
-            progressBar.setVisibility(View.GONE);
+    public void setEndOfTimelineMessage(int messageId) {
+        endOfTimelineMessage.setText(messageId);
+    }
+
+    public void setState(State state) {
+        switch (state) {
+            case LOADING: {
+                retryBar.setVisibility(View.GONE);
+                progressBar.setVisibility(View.VISIBLE);
+                endOfTimelineMessage.setVisibility(View.GONE);
+                break;
+            }
+            case RETRY: {
+                retryBar.setVisibility(View.VISIBLE);
+                progressBar.setVisibility(View.GONE);
+                endOfTimelineMessage.setVisibility(View.GONE);
+                break;
+            }
+            case END_OF_TIMELINE: {
+                retryBar.setVisibility(View.GONE);
+                progressBar.setVisibility(View.GONE);
+                endOfTimelineMessage.setVisibility(View.VISIBLE);
+                break;
+            }
         }
     }
 }

app/src/main/java/com/keylesspalace/tusky/Notification.java

@@ -91,4 +91,20 @@ public class Notification {
         }
         return notifications;
     }
+
+    @Override
+    public int hashCode() {
+        return id.hashCode();
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        if (this.id == null) {
+            return this == other;
+        } else if (!(other instanceof Notification)) {
+            return false;
+        }
+        Notification notification = (Notification) other;
+        return notification.getId().equals(this.id);
+    }
 }

app/src/main/java/com/keylesspalace/tusky/NotificationsAdapter.java

@@ -102,6 +102,7 @@ public class NotificationsAdapter extends RecyclerView.Adapter implements Adapte
             FooterViewHolder holder = (FooterViewHolder) viewHolder;
             holder.setupButton(footerListener);
             holder.setRetryMessage(R.string.footer_retry_notifications);
+            holder.setEndOfTimelineMessage(R.string.footer_end_of_notifications);
         }
     }
 

app/src/main/java/com/keylesspalace/tusky/NotificationsFragment.java

@@ -43,6 +43,7 @@ import java.util.Map;
 public class NotificationsFragment extends SFragment implements
         SwipeRefreshLayout.OnRefreshListener, StatusActionListener, FooterActionListener {
     private static final String TAG = "Notifications"; // logging tag
+    private static final int EXPECTED_NOTIFICATIONS_FETCHED = 10;
 
     private SwipeRefreshLayout swipeRefreshLayout;
     private RecyclerView recyclerView;
@@ -139,22 +140,26 @@ public class NotificationsFragment extends SFragment implements
         } else {
             adapter.update(notifications);
         }
-        showFetchTimelineRetry(false);
+        if (notifications.size() >= EXPECTED_NOTIFICATIONS_FETCHED) {
+            setFetchTimelineState(FooterViewHolder.State.LOADING);
+        } else {
+            setFetchTimelineState(FooterViewHolder.State.END_OF_TIMELINE);
+        }
         swipeRefreshLayout.setRefreshing(false);
     }
 
     private void onFetchNotificationsFailure(Exception exception) {
-        showFetchTimelineRetry(true);
+        setFetchTimelineState(FooterViewHolder.State.RETRY);
         swipeRefreshLayout.setRefreshing(false);
         Log.e(TAG, "Fetch failure: " + exception.getMessage());
     }
 
-    private void showFetchTimelineRetry(boolean show) {
+    private void setFetchTimelineState(FooterViewHolder.State state) {
         RecyclerView.ViewHolder viewHolder =
                 recyclerView.findViewHolderForAdapterPosition(adapter.getItemCount() - 1);
         if (viewHolder != null) {
             FooterViewHolder holder = (FooterViewHolder) viewHolder;
-            holder.showRetry(show);
+            holder.setState(state);
         }
     }
 

app/src/main/java/com/keylesspalace/tusky/TimelineAdapter.java

@@ -67,6 +67,7 @@ public class TimelineAdapter extends RecyclerView.Adapter implements AdapterItem
             FooterViewHolder holder = (FooterViewHolder) viewHolder;
             holder.setupButton(footerListener);
             holder.setRetryMessage(R.string.footer_retry_statuses);
+            holder.setEndOfTimelineMessage(R.string.footer_end_of_statuses);
         }
     }
 

app/src/main/java/com/keylesspalace/tusky/TimelineFragment.java

@@ -43,6 +43,7 @@ import java.util.Map;
 public class TimelineFragment extends SFragment implements
         SwipeRefreshLayout.OnRefreshListener, StatusActionListener, FooterActionListener {
     private static final String TAG = "Timeline"; // logging tag
+    private static final int EXPECTED_STATUSES_FETCHED = 20;
 
     public enum Kind {
         HOME,
@@ -229,22 +230,26 @@ public class TimelineFragment extends SFragment implements
         } else {
             adapter.update(statuses);
         }
-        showFetchTimelineRetry(false);
+        if (statuses.size() >= EXPECTED_STATUSES_FETCHED) {
+            setFetchTimelineState(FooterViewHolder.State.LOADING);
+        } else {
+            setFetchTimelineState(FooterViewHolder.State.END_OF_TIMELINE);
+        }
         swipeRefreshLayout.setRefreshing(false);
     }
 
     public void onFetchTimelineFailure(Exception exception) {
-        showFetchTimelineRetry(true);
+        setFetchTimelineState(FooterViewHolder.State.RETRY);
         swipeRefreshLayout.setRefreshing(false);
         Log.e(TAG, exception.getMessage());
     }
 
-    private void showFetchTimelineRetry(boolean show) {
+    private void setFetchTimelineState(FooterViewHolder.State state) {
         RecyclerView.ViewHolder viewHolder =
                 recyclerView.findViewHolderForAdapterPosition(adapter.getItemCount() - 1);
         if (viewHolder != null) {
             FooterViewHolder holder = (FooterViewHolder) viewHolder;
-            holder.showRetry(show);
+            holder.setState(state);
         }
     }
 

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

@@ -36,6 +36,12 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content" />
 
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:id="@+id/footer_end_of_timeline_text"
+            android:visibility="gone" />
+
     </LinearLayout>
 
 </LinearLayout>

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

@@ -74,6 +74,9 @@
     <string name="footer_retry_statuses">Could not load the rest of the statuses.</string>
     <string name="footer_retry_notifications">Could not load the rest of the statuses.</string>
     <string name="footer_retry_accounts">Could not load the rest of the accounts.</string>
+    <string name="footer_end_of_statuses">end of the statuses</string>
+    <string name="footer_end_of_notifications">end of the notifications</string>
+    <string name="footer_end_of_accounts">end of the accounts</string>
 
     <string name="notification_reblog_format">%s boosted your status</string>
     <string name="notification_favourite_format">%s favourited your status</string>