From a6975f2489119a0e0cc278fcdee8cead97978b14 Mon Sep 17 00:00:00 2001
From: Alex Ning <chineseperson5@gmail.com>
Date: Tue, 8 Dec 2020 15:12:56 +0800
Subject: Hide read posts in MainActivity (there is an issue in lazy mode).

---
 .../infinityforreddit/FragmentCommunicator.java    |  3 ++
 .../infinityforreddit/activities/MainActivity.java | 21 ++++++++++++
 .../adapters/PostRecyclerViewAdapter.java          | 40 ++++++++++++++++++++++
 .../FABMoreOptionsBottomSheetFragment.java         |  8 +++++
 .../infinityforreddit/fragments/PostFragment.java  | 16 +++++++++
 .../utils/SharedPreferencesUtils.java              |  1 +
 6 files changed, 89 insertions(+)

(limited to 'app/src/main/java/ml/docilealligator/infinityforreddit')

diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/FragmentCommunicator.java b/app/src/main/java/ml/docilealligator/infinityforreddit/FragmentCommunicator.java
index 07a18a72..3fb00c2a 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/FragmentCommunicator.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/FragmentCommunicator.java
@@ -35,4 +35,7 @@ public interface FragmentCommunicator {
     }
 
     void applyTheme();
+
+    default void hideReadPosts() {
+    }
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/MainActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/MainActivity.java
index c963cf84..9219de22 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/MainActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/MainActivity.java
@@ -591,6 +591,9 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
                 case SharedPreferencesUtils.MAIN_ACTIVITY_BOTTOM_APP_BAR_FAB_RANDOM:
                     fab.setImageResource(R.drawable.ic_random_24dp);
                     break;
+                case SharedPreferencesUtils.MAIN_ACTIVITY_BOTTOM_APP_BAR_FAB_HIDE_READ_POSTS:
+                    fab.setImageResource(R.drawable.ic_hide_read_posts_24dp);
+                    break;
                 default:
                     fab.setImageResource(R.drawable.ic_add_day_night_24dp);
                     break;
@@ -625,6 +628,11 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
                     case SharedPreferencesUtils.MAIN_ACTIVITY_BOTTOM_APP_BAR_FAB_RANDOM:
                         randomThing();
                         break;
+                    case SharedPreferencesUtils.MAIN_ACTIVITY_BOTTOM_APP_BAR_FAB_HIDE_READ_POSTS:
+                        if (sectionsPagerAdapter != null) {
+                            sectionsPagerAdapter.hideReadPosts();
+                        }
+                        break;
                     default:
                         postTypeBottomSheetFragment.show(getSupportFragmentManager(), postTypeBottomSheetFragment.getTag());
                         break;
@@ -1199,6 +1207,12 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
                 randomThing();
                 break;
             }
+            case FABMoreOptionsBottomSheetFragment.FAB_HIDE_READ_POSTS: {
+                if (sectionsPagerAdapter != null) {
+                    sectionsPagerAdapter.hideReadPosts();
+                }
+                break;
+            }
         }
     }
 
@@ -1523,5 +1537,12 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
                 Utils.displaySortTypeInToolbar(sortType, toolbar);
             }
         }
+
+        void hideReadPosts() {
+            PostFragment currentFragment = getCurrentFragment();
+            if (currentFragment != null) {
+                currentFragment.hideReadPosts();
+            }
+        }
     }
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostRecyclerViewAdapter.java
index 76df281b..9d9e890d 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostRecyclerViewAdapter.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostRecyclerViewAdapter.java
@@ -173,6 +173,7 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
     private int mButtonTextColor;
     private int mPostIconAndInfoColor;
     private int mDividerColor;
+    private int mHideReadPostsIndex = 0;
     private float mScale;
     private boolean mDisplaySubredditName;
     private boolean mVoteButtonsOnTheRight;
@@ -394,6 +395,15 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
             Post post = getItem(position);
             if (post != null) {
                 if (post.isRead()) {
+                    if (position < mHideReadPostsIndex) {
+                        holder.itemView.setVisibility(View.GONE);
+                        RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) holder.itemView.getLayoutParams();
+                        params.height = 0;
+                        params.topMargin = 0;
+                        params.bottomMargin = 0;
+                        holder.itemView.setLayoutParams(params);
+                        return;
+                    }
                     holder.itemView.setBackgroundTintList(ColorStateList.valueOf(mReadPostCardViewBackgroundColor));
                     ((PostBaseViewHolder) holder).titleTextView.setTextColor(mReadPostTitleColor);
                 }
@@ -706,6 +716,13 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
             Post post = getItem(position);
             if (post != null) {
                 if (post.isRead()) {
+                    if (position < mHideReadPostsIndex) {
+                        holder.itemView.setVisibility(View.GONE);
+                        ViewGroup.LayoutParams params = holder.itemView.getLayoutParams();
+                        params.height = 0;
+                        holder.itemView.setLayoutParams(params);
+                        return;
+                    }
                     holder.itemView.setBackgroundColor(mReadPostCardViewBackgroundColor);
                     ((PostCompactBaseViewHolder) holder).titleTextView.setTextColor(mReadPostTitleColor);
                 }
@@ -1189,6 +1206,18 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
         mShowAbsoluteNumberOfVotes = showAbsoluteNumberOfVotes;
     }
 
+    public int getHideReadPostsIndex() {
+        return mHideReadPostsIndex;
+    }
+
+    public void setHideReadPostsIndex(int hideReadPostsIndex) {
+        mHideReadPostsIndex = hideReadPostsIndex;
+    }
+
+    public void prepareToHideReadPosts() {
+        mHideReadPostsIndex = getItemCount();
+    }
+
     private boolean hasExtraRow() {
         return networkState != null && networkState.getStatus() != NetworkState.Status.SUCCESS;
     }
@@ -1265,6 +1294,13 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
     public void onViewRecycled(@NonNull RecyclerView.ViewHolder holder) {
         super.onViewRecycled(holder);
         if (holder instanceof PostBaseViewHolder) {
+            ((PostBaseViewHolder) holder).itemView.setVisibility(View.VISIBLE);
+            RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) holder.itemView.getLayoutParams();
+            params.height = ViewGroup.LayoutParams.WRAP_CONTENT;
+            int marginPixel = (int) Utils.convertDpToPixel(8, mActivity);
+            params.topMargin = marginPixel;
+            params.bottomMargin = marginPixel;
+            holder.itemView.setLayoutParams(params);
             ((PostBaseViewHolder) holder).itemView.setBackgroundTintList(ColorStateList.valueOf(mCardViewBackgroundColor));
             ((PostBaseViewHolder) holder).titleTextView.setTextColor(mPostTitleColor);
             if (holder instanceof PostVideoAutoplayViewHolder) {
@@ -1306,6 +1342,10 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
             ((PostBaseViewHolder) holder).scoreTextView.setTextColor(mPostIconAndInfoColor);
             ((PostBaseViewHolder) holder).downvoteButton.setColorFilter(mPostIconAndInfoColor, android.graphics.PorterDuff.Mode.SRC_IN);
         } else if (holder instanceof PostCompactBaseViewHolder) {
+            ((PostCompactBaseViewHolder) holder).itemView.setVisibility(View.VISIBLE);
+            ViewGroup.LayoutParams params = holder.itemView.getLayoutParams();
+            params.height = ViewGroup.LayoutParams.WRAP_CONTENT;
+            holder.itemView.setLayoutParams(params);
             ((PostCompactBaseViewHolder) holder).itemView.setBackgroundColor(mCardViewBackgroundColor);
             ((PostCompactBaseViewHolder) holder).titleTextView.setTextColor(mPostTitleColor);
             mGlide.clear(((PostCompactBaseViewHolder) holder).imageView);
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/bottomsheetfragments/FABMoreOptionsBottomSheetFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/bottomsheetfragments/FABMoreOptionsBottomSheetFragment.java
index a0061ff8..a7311736 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/bottomsheetfragments/FABMoreOptionsBottomSheetFragment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/bottomsheetfragments/FABMoreOptionsBottomSheetFragment.java
@@ -25,6 +25,7 @@ public class FABMoreOptionsBottomSheetFragment extends RoundedBottomSheetDialogF
     public static final int FAB_OPTION_GO_TO_SUBREDDIT = 5;
     public static final int FAB_OPTION_GO_TO_USER = 6;
     public static final int FAB_RANDOM = 7;
+    public static final int FAB_HIDE_READ_POSTS = 8;
 
     @BindView(R.id.submit_post_text_view_fab_more_options_bottom_sheet_fragment)
     TextView submitPostTextView;
@@ -42,6 +43,8 @@ public class FABMoreOptionsBottomSheetFragment extends RoundedBottomSheetDialogF
     TextView goToUserTextView;
     @BindView(R.id.random_text_view_fab_more_options_bottom_sheet_fragment)
     TextView randomTextView;
+    @BindView(R.id.hide_read_posts_text_view_fab_more_options_bottom_sheet_fragment)
+    TextView hideReadPostsTextView;
     private FABOptionSelectionCallback activity;
 
     public FABMoreOptionsBottomSheetFragment() {
@@ -96,6 +99,11 @@ public class FABMoreOptionsBottomSheetFragment extends RoundedBottomSheetDialogF
             dismiss();
         });
 
+        hideReadPostsTextView.setOnClickListener(view -> {
+            activity.fabOptionSelected(FAB_HIDE_READ_POSTS);
+            dismiss();
+        });
+
         return rootView;
     }
 
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/PostFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/PostFragment.java
index 6686e3ff..c682e181 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/PostFragment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/PostFragment.java
@@ -135,6 +135,7 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
     private static final String RECYCLER_VIEW_POSITION_STATE = "RVPS";
     private static final String READ_POST_LIST_STATE = "RPLS";
     private static final String SUBREDDIT_FILTER_LIST_STATE = "SFLS";
+    private static final String HIDE_READ_POSTS_INDEX_STATE = "HRPIS";
 
     @BindView(R.id.swipe_refresh_layout_post_fragment)
     SwipeRefreshLayout mSwipeRefreshLayout;
@@ -370,6 +371,7 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
         mSwipeRefreshLayout.setEnabled(mSharedPreferences.getBoolean(SharedPreferencesUtils.PULL_TO_REFRESH, true));
         mSwipeRefreshLayout.setOnRefreshListener(this::refresh);
 
+        int hideReadPostsIndex = 0;
         if (savedInstanceState != null) {
             int recyclerViewPosition = savedInstanceState.getInt(RECYCLER_VIEW_POSITION_STATE);
             if (recyclerViewPosition > 0) {
@@ -379,6 +381,7 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
             isInLazyMode = savedInstanceState.getBoolean(IS_IN_LAZY_MODE_STATE);
             readPosts = savedInstanceState.getParcelableArrayList(READ_POST_LIST_STATE);
             subredditFilterList = savedInstanceState.getParcelableArrayList(SUBREDDIT_FILTER_LIST_STATE);
+            hideReadPostsIndex = savedInstanceState.getInt(HIDE_READ_POSTS_INDEX_STATE, 0);
         }
 
         mPostRecyclerView.setOnTouchListener((view, motionEvent) -> {
@@ -653,6 +656,8 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
             });
         }
 
+        mAdapter.setHideReadPostsIndex(hideReadPostsIndex);
+
         if (activity instanceof ActivityToolbarInterface) {
             ((ActivityToolbarInterface) activity).displaySortType();
         }
@@ -976,6 +981,9 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
         outState.putBoolean(IS_IN_LAZY_MODE_STATE, isInLazyMode);
         outState.putParcelableArrayList(READ_POST_LIST_STATE, readPosts);
         outState.putParcelableArrayList(SUBREDDIT_FILTER_LIST_STATE, subredditFilterList);
+        if (mAdapter != null) {
+            outState.putInt(HIDE_READ_POSTS_INDEX_STATE, mAdapter.getHideReadPostsIndex());
+        }
         if (mLinearLayoutManager != null) {
             outState.putInt(RECYCLER_VIEW_POSITION_STATE, mLinearLayoutManager.findFirstVisibleItemPosition());
         } else if (mStaggeredGridLayoutManager != null) {
@@ -1143,6 +1151,14 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
         mFetchPostInfoTextView.setTextColor(customThemeWrapper.getSecondaryTextColor());
     }
 
+    @Override
+    public void hideReadPosts() {
+        if (mAdapter != null) {
+            mAdapter.prepareToHideReadPosts();
+            refreshAdapter();
+        }
+    }
+
     @Subscribe
     public void onPostUpdateEvent(PostUpdateEventToPostList event) {
         PagedList<Post> posts = mAdapter.getCurrentList();
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/utils/SharedPreferencesUtils.java b/app/src/main/java/ml/docilealligator/infinityforreddit/utils/SharedPreferencesUtils.java
index a5ba50de..44bf874f 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/utils/SharedPreferencesUtils.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/utils/SharedPreferencesUtils.java
@@ -194,6 +194,7 @@ public class SharedPreferencesUtils {
     public static final int MAIN_ACTIVITY_BOTTOM_APP_BAR_FAB_GO_TO_SUBREDDIT = 5;
     public static final int MAIN_ACTIVITY_BOTTOM_APP_BAR_FAB_GO_TO_USER = 6;
     public static final int MAIN_ACTIVITY_BOTTOM_APP_BAR_FAB_RANDOM = 7;
+    public static final int MAIN_ACTIVITY_BOTTOM_APP_BAR_FAB_HIDE_READ_POSTS = 8;
     public static final int OTHER_ACTIVITIES_BOTTOM_APP_BAR_OPTION_HOME = 0;
     public static final int OTHER_ACTIVITIES_BOTTOM_APP_BAR_OPTION_SUBSCRIPTIONS = 1;
     public static final int OTHER_ACTIVITIES_BOTTOM_APP_BAR_OPTION_INBOX = 2;
-- 
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