Fix issue #672 - Support pagination for search / trending

app/src/main/java/app/fedilab/android/client/entities/api/Pagination.java

@@ -19,4 +19,5 @@ public class Pagination {
     public String max_id;
     public String min_id;
     public String since_id;
+    public Integer offset;
 }

app/src/main/java/app/fedilab/android/client/entities/api/Results.java

@@ -24,5 +24,6 @@ public class Results {
     public java.util.List<Status> statuses;
     @SerializedName("hashtags")
     public java.util.List<Tag> hashtags;
+    public Pagination pagination;
 
 }

app/src/main/java/app/fedilab/android/helper/MastodonHelper.java

@@ -80,6 +80,7 @@ public class MastodonHelper {
 
     public static final int ACCOUNTS_PER_CALL = 40;
     public static final int STATUSES_PER_CALL = 40;
+    public static final int SEARCH_PER_CALL = 20;
     public static final int NOTIFICATIONS_PER_CALL = 30;
 
 

app/src/main/java/app/fedilab/android/ui/fragment/timeline/FragmentMastodonAccount.java

@@ -56,6 +56,7 @@ public class FragmentMastodonAccount extends Fragment {
     private boolean flagLoading;
     private List<Account> accounts;
     private String max_id;
+    private Integer offset;
     private AccountAdapter accountAdapter;
     private String search;
     private Account accountTimeline;
@@ -84,6 +85,7 @@ public class FragmentMastodonAccount extends Fragment {
         binding.recyclerView.setVisibility(View.GONE);
         accountsVM = new ViewModelProvider(FragmentMastodonAccount.this).get(viewModelKey, AccountsVM.class);
         max_id = null;
+        offset = 0;
         router(true);
     }
 
@@ -109,7 +111,8 @@ public class FragmentMastodonAccount extends Fragment {
             }
         } else if (search != null) {
             SearchVM searchVM = new ViewModelProvider(FragmentMastodonAccount.this).get(viewModelKey, SearchVM.class);
-            searchVM.search(BaseMainActivity.currentInstance, BaseMainActivity.currentToken, search.trim(), null, "accounts", false, true, false, 0, null, null, MastodonHelper.STATUSES_PER_CALL)
+            if (firstLoad) {
+                searchVM.search(BaseMainActivity.currentInstance, BaseMainActivity.currentToken, search.trim(), null, "accounts", false, true, false, 0, null, null, MastodonHelper.SEARCH_PER_CALL)
                         .observe(getViewLifecycleOwner(), results -> {
                             if (results != null) {
                                 Accounts accounts = new Accounts();
@@ -121,6 +124,18 @@ public class FragmentMastodonAccount extends Fragment {
                                 Toasty.error(requireActivity(), getString(R.string.toast_error), Toasty.LENGTH_SHORT).show();
                             }
                         });
+            } else {
+                searchVM.search(BaseMainActivity.currentInstance, BaseMainActivity.currentToken, search.trim(), null, "accounts", false, true, false, offset, null, null, MastodonHelper.SEARCH_PER_CALL)
+                        .observe(getViewLifecycleOwner(), results -> {
+                            if (results != null) {
+                                Accounts accounts = new Accounts();
+                                Pagination pagination = new Pagination();
+                                accounts.accounts = results.accounts;
+                                accounts.pagination = pagination;
+                                dealWithPagination(accounts);
+                            }
+                        });
+            }
         } else if (timelineType == Timeline.TimeLineEnum.MUTED_TIMELINE) {
             if (firstLoad) {
                 accountsVM.getMutes(BaseMainActivity.currentInstance, BaseMainActivity.currentToken, String.valueOf(MastodonHelper.accountsPerCall(requireActivity())), null, null)
@@ -204,7 +219,11 @@ public class FragmentMastodonAccount extends Fragment {
 
         this.accounts = accounts.accounts;
         accountAdapter = new AccountAdapter(this.accounts, timelineType == Timeline.TimeLineEnum.MUTED_TIMELINE_HOME);
+        if (search == null) {
             flagLoading = accounts.pagination.max_id == null;
+        } else {
+            offset += MastodonHelper.SEARCH_PER_CALL;
+        }
         LinearLayoutManager mLayoutManager = new LinearLayoutManager(requireActivity());
         binding.recyclerView.setLayoutManager(mLayoutManager);
         binding.recyclerView.setAdapter(accountAdapter);
@@ -263,6 +282,9 @@ public class FragmentMastodonAccount extends Fragment {
             //Fetch the relationship
             fetchRelationShip(fetched_accounts.accounts, position);
             max_id = fetched_accounts.pagination.max_id;
+            if (search != null) {
+                offset += MastodonHelper.SEARCH_PER_CALL;
+            }
             accountAdapter.notifyItemRangeInserted(startId, fetched_accounts.accounts.size());
         } else {
             flagLoading = true;

app/src/main/java/app/fedilab/android/ui/fragment/timeline/FragmentMastodonTag.java

@@ -25,6 +25,7 @@ import androidx.annotation.Nullable;
 import androidx.fragment.app.Fragment;
 import androidx.lifecycle.ViewModelProvider;
 import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -49,6 +50,9 @@ public class FragmentMastodonTag extends Fragment {
     private TagAdapter tagAdapter;
     private String search;
     private Timeline.TimeLineEnum timelineType;
+    private Integer offset;
+    private boolean flagLoading;
+    private List<Tag> tagList;
 
     public View onCreateView(@NonNull LayoutInflater inflater,
                              ViewGroup container, Bundle savedInstanceState) {
@@ -66,6 +70,10 @@ public class FragmentMastodonTag extends Fragment {
         super.onViewCreated(view, savedInstanceState);
         binding.loader.setVisibility(View.VISIBLE);
         binding.recyclerView.setVisibility(View.GONE);
+        offset = 0;
+        flagLoading = false;
+        binding.swipeContainer.setRefreshing(false);
+        binding.swipeContainer.setEnabled(false);
         router();
     }
 
@@ -75,16 +83,24 @@ public class FragmentMastodonTag extends Fragment {
     private void router() {
         if (search != null && timelineType == null) {
             SearchVM searchVM = new ViewModelProvider(FragmentMastodonTag.this).get(SearchVM.class);
-            searchVM.search(BaseMainActivity.currentInstance, BaseMainActivity.currentToken, search.trim(), null, "hashtags", false, true, false, 0, null, null, MastodonHelper.STATUSES_PER_CALL)
+            searchVM.search(BaseMainActivity.currentInstance, BaseMainActivity.currentToken, search.trim(), null, "hashtags", false, true, false, offset, null, null, MastodonHelper.SEARCH_PER_CALL)
                     .observe(getViewLifecycleOwner(), results -> {
-                        if (results != null && results.hashtags != null) {
+                        if (results != null && results.hashtags != null && offset == 0) {
                             initializeTagCommonView(results.hashtags);
+                        } else if (results != null && results.hashtags != null) {
+                            dealWithPaginationTag(results.hashtags);
                         }
                     });
         } else if (timelineType == Timeline.TimeLineEnum.TREND_TAG) {
             TimelinesVM timelinesVM = new ViewModelProvider(FragmentMastodonTag.this).get(TimelinesVM.class);
-            timelinesVM.getTagsTrends(BaseMainActivity.currentToken, BaseMainActivity.currentInstance)
+            timelinesVM.getTagsTrends(BaseMainActivity.currentToken, BaseMainActivity.currentInstance, offset, MastodonHelper.SEARCH_PER_CALL)
-                    .observe(getViewLifecycleOwner(), this::initializeTagCommonView);
+                    .observe(getViewLifecycleOwner(), tags -> {
+                        if (tags != null && offset == 0) {
+                            initializeTagCommonView(tags);
+                        } else if (tags != null) {
+                            dealWithPaginationTag(tags);
+                        }
+                    });
         }
     }
 
@@ -92,6 +108,24 @@ public class FragmentMastodonTag extends Fragment {
         binding.recyclerView.setAdapter(tagAdapter);
     }
 
+    private void dealWithPaginationTag(final List<Tag> tags) {
+        if (binding == null || !isAdded() || getActivity() == null) {
+            return;
+        }
+        if (tags == null || tags.size() == 0) {
+            flagLoading = true;
+            binding.loadingNextElements.setVisibility(View.GONE);
+            return;
+        }
+        offset += MastodonHelper.SEARCH_PER_CALL;
+        binding.swipeContainer.setRefreshing(false);
+        binding.loadingNextElements.setVisibility(View.GONE);
+        flagLoading = false;
+        int start = tagList.size();
+        tagList.addAll(tags);
+        tagAdapter.notifyItemRangeInserted(start, tags.size());
+    }
+
     /**
      * Intialize the view for tags
      *
@@ -101,6 +135,7 @@ public class FragmentMastodonTag extends Fragment {
         if (binding == null || !isAdded() || getActivity() == null) {
             return;
         }
+        tagList = new ArrayList<>();
         binding.loader.setVisibility(View.GONE);
         binding.noAction.setVisibility(View.GONE);
         binding.swipeContainer.setRefreshing(false);
@@ -130,12 +165,35 @@ public class FragmentMastodonTag extends Fragment {
                 tags.add(0, tag);
             }
         }
+        offset += MastodonHelper.SEARCH_PER_CALL;
         binding.recyclerView.setVisibility(View.VISIBLE);
         binding.noAction.setVisibility(View.GONE);
-        tagAdapter = new TagAdapter(tags);
+        tagList.addAll(tags);
+        tagAdapter = new TagAdapter(tagList);
         LinearLayoutManager mLayoutManager = new LinearLayoutManager(requireActivity());
         binding.recyclerView.setLayoutManager(mLayoutManager);
         binding.recyclerView.setAdapter(tagAdapter);
+        binding.recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
+            @Override
+            public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
+
+                int firstVisibleItem = mLayoutManager.findFirstVisibleItemPosition();
+                if (dy > 0) {
+                    int visibleItemCount = mLayoutManager.getChildCount();
+                    int totalItemCount = mLayoutManager.getItemCount();
+
+                    if (firstVisibleItem + visibleItemCount == totalItemCount) {
+                        if (!flagLoading) {
+                            flagLoading = true;
+                            binding.loadingNextElements.setVisibility(View.VISIBLE);
+                            router();
+                        }
+                    } else {
+                        binding.loadingNextElements.setVisibility(View.GONE);
+                    }
+                }
+            }
+        });
     }
 
 }

app/src/main/java/app/fedilab/android/ui/fragment/timeline/FragmentMastodonTimeline.java

@@ -80,6 +80,7 @@ public class FragmentMastodonTimeline extends Fragment implements StatusAdapter.
     private String search, searchCache;
     private Status statusReport;
     private String max_id, min_id, min_id_fetch_more, max_id_fetch_more;
+    private Integer offset;
     private StatusAdapter statusAdapter;
     private Timeline.TimeLineEnum timelineType;
     private List<Status> timelineStatuses;
@@ -188,6 +189,7 @@ public class FragmentMastodonTimeline extends Fragment implements StatusAdapter.
             if (statusAdapter != null) {
                 statusAdapter.notifyItemRangeRemoved(0, count);
                 max_id = statusReport != null ? statusReport.id : null;
+                offset = 0;
                 SharedPreferences sharedpreferences = PreferenceManager.getDefaultSharedPreferences(requireActivity());
                 rememberPosition = sharedpreferences.getBoolean(getString(R.string.SET_REMEMBER_POSITION), true);
                 //Inner marker are only for pinned timelines and main timelines, they have isViewInitialized set to false
@@ -281,6 +283,7 @@ public class FragmentMastodonTimeline extends Fragment implements StatusAdapter.
         binding.loader.setVisibility(View.VISIBLE);
         binding.recyclerView.setVisibility(View.GONE);
         max_id = statusReport != null ? statusReport.id : null;
+        offset = 0;
         SharedPreferences sharedpreferences = PreferenceManager.getDefaultSharedPreferences(requireActivity());
         rememberPosition = sharedpreferences.getBoolean(getString(R.string.SET_REMEMBER_POSITION), true);
         //Inner marker are only for pinned timelines and main timelines, they have isViewInitialized set to false
@@ -428,7 +431,7 @@ public class FragmentMastodonTimeline extends Fragment implements StatusAdapter.
             }
             //Update the timeline with new statuses
             int insertedStatus;
-            if (timelineType != Timeline.TimeLineEnum.TREND_MESSAGE_PUBLIC && timelineType != Timeline.TimeLineEnum.TREND_MESSAGE) {
+            if (timelineType != Timeline.TimeLineEnum.TREND_MESSAGE_PUBLIC && timelineType != Timeline.TimeLineEnum.TREND_MESSAGE && search == null) {
                 insertedStatus = updateStatusListWith(fetched_statuses.statuses);
             } else { //Trends cannot be ordered by id
                 insertedStatus = fetched_statuses.statuses.size();
@@ -455,6 +458,9 @@ public class FragmentMastodonTimeline extends Fragment implements StatusAdapter.
                     min_id = fetched_statuses.pagination.min_id;
                 }
             }
+            if (search != null) {
+                offset += MastodonHelper.SEARCH_PER_CALL;
+            }
             int sizeBeforeFilter = 0;
             int filteredMessage = 0;
             int requestedMessages = MastodonHelper.statusesPerCall(requireActivity());
@@ -557,6 +563,9 @@ public class FragmentMastodonTimeline extends Fragment implements StatusAdapter.
         if (min_id == null || (statuses.pagination.min_id != null && Helper.compareTo(statuses.pagination.min_id, min_id) > 0)) {
             min_id = statuses.pagination.min_id;
         }
+        if (search != null) {
+            offset += MastodonHelper.SEARCH_PER_CALL;
+        }
         statusAdapter = new StatusAdapter(timelineStatuses, timelineType, minified, canBeFederated, checkRemotely);
         statusAdapter.fetchMoreCallBack = this;
         if (statusReport != null) {
@@ -570,8 +579,7 @@ public class FragmentMastodonTimeline extends Fragment implements StatusAdapter.
         mLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
         binding.recyclerView.setLayoutManager(mLayoutManager);
         binding.recyclerView.setAdapter(statusAdapter);
-
+        if (timelineType != Timeline.TimeLineEnum.TREND_MESSAGE) {
-        if (searchCache == null && timelineType != Timeline.TimeLineEnum.TREND_MESSAGE) {
             binding.recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
                 @Override
                 public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
@@ -1033,7 +1041,8 @@ public class FragmentMastodonTimeline extends Fragment implements StatusAdapter.
             }
         } else if (search != null) {
             SearchVM searchVM = new ViewModelProvider(FragmentMastodonTimeline.this).get(viewModelKey, SearchVM.class);
-            searchVM.search(BaseMainActivity.currentInstance, BaseMainActivity.currentToken, search.trim(), null, null, false, true, false, 0, null, null, MastodonHelper.STATUSES_PER_CALL)
+            if (direction == null) {
+                searchVM.search(BaseMainActivity.currentInstance, BaseMainActivity.currentToken, search.trim(), null, null, false, true, false, 0, null, null, MastodonHelper.SEARCH_PER_CALL)
                         .observe(getViewLifecycleOwner(), results -> {
                             if (results != null) {
                                 Statuses statuses = new Statuses();
@@ -1044,6 +1053,19 @@ public class FragmentMastodonTimeline extends Fragment implements StatusAdapter.
                                 Toasty.error(requireActivity(), getString(R.string.toast_error), Toasty.LENGTH_LONG).show();
                             }
                         });
+            } else if (direction == DIRECTION.BOTTOM) {
+                searchVM.search(BaseMainActivity.currentInstance, BaseMainActivity.currentToken, search.trim(), null, null, false, true, false, offset, null, null, MastodonHelper.SEARCH_PER_CALL)
+                        .observe(getViewLifecycleOwner(), results -> {
+                            if (results != null) {
+                                Statuses statuses = new Statuses();
+                                statuses.statuses = results.statuses;
+                                statuses.pagination = new Pagination();
+                                dealWithPagination(statuses, direction, false);
+                            }
+                        });
+            } else {
+                flagLoading = false;
+            }
         } else if (searchCache != null) {
             SearchVM searchVM = new ViewModelProvider(FragmentMastodonTimeline.this).get(viewModelKey, SearchVM.class);
             searchVM.searchCache(BaseMainActivity.currentInstance, BaseMainActivity.currentUserID, searchCache.trim())

app/src/main/java/app/fedilab/android/viewmodel/mastodon/SearchVM.java

@@ -99,10 +99,15 @@ public class SearchVM extends AndroidViewModel {
         MastodonSearchService mastodonSearchService = init(instance);
         resultsMutableLiveData = new MutableLiveData<>();
         new Thread(() -> {
+            int finalLimit = 40;
+            if (limit != null && limit < 40) {
+                finalLimit = limit;
+            }
             Call<Results> resultsCall = mastodonSearchService.search(
                     token, q, account_id, type, exclude_unreviewed,
-                    resolve, following, offset, max_id, min_id, limit);
+                    resolve, following, offset, max_id, min_id, finalLimit);
             Results results = null;
+
             if (resultsCall != null) {
                 try {
                     Response<Results> resultsResponse = resultsCall.execute();
@@ -118,6 +123,7 @@ public class SearchVM extends AndroidViewModel {
                             if (results.hashtags == null) {
                                 results.hashtags = new ArrayList<>();
                             }
+                            results.pagination.offset = finalLimit;
                         }
                     }
                 } catch (Exception e) {

app/src/main/java/app/fedilab/android/viewmodel/mastodon/TimelinesVM.java

@@ -198,11 +198,11 @@ public class TimelinesVM extends AndroidViewModel {
         return statusesMutableLiveData;
     }
 
-    public LiveData<List<Tag>> getTagsTrends(String token, @NonNull String instance) {
+    public LiveData<List<Tag>> getTagsTrends(String token, @NonNull String instance, Integer offset, Integer limit) {
         MastodonTimelinesService mastodonTimelinesService = init(instance);
         tagListMutableLiveData = new MutableLiveData<>();
         new Thread(() -> {
-            Call<List<Tag>> publicTlCall = mastodonTimelinesService.getTagTrends(token);
+            Call<List<Tag>> publicTlCall = mastodonTimelinesService.getTagTrends(token, offset, limit);
             List<Tag> tagList = null;
             if (publicTlCall != null) {
                 try {

src/fdroid/fastlane/metadata/android/en/changelogs/453.txt

@@ -0,0 +1,5 @@
+Fixed:
+- Long press on Nitter tabs
+- Open with another accounts
+- Chars size not respected for Android 5-6
+- Wrong instance fetched for instances.social