Made all fragments that display posts extends AbstractPostsListFragment

app/src/main/java/org/communiquons/android/comunic/client/ui/fragments/AbstractPostsListFragment.java

@@ -4,9 +4,11 @@ import android.app.AlertDialog;
 import android.content.DialogInterface;
 import android.os.AsyncTask;
 import android.os.Bundle;
+import android.support.annotation.CallSuper;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentTransaction;
 import android.support.v7.widget.DividerItemDecoration;
 import android.support.v7.widget.LinearLayoutManager;
 import android.util.Pair;
@@ -16,7 +18,11 @@ import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.Button;
 import android.widget.EditText;
+import android.widget.FrameLayout;
+import android.widget.ProgressBar;
+import android.widget.TextView;
 import android.widget.Toast;
 
 import org.communiquons.android.comunic.client.R;
@@ -33,13 +39,13 @@ import org.communiquons.android.comunic.client.data.models.UserInfo;
 import org.communiquons.android.comunic.client.data.utils.AccountUtils;
 import org.communiquons.android.comunic.client.data.utils.StringsUtils;
 import org.communiquons.android.comunic.client.ui.adapters.PostsAdapter;
-import org.communiquons.android.comunic.client.ui.listeners.OnPostListFragmentsUpdateListener;
 import org.communiquons.android.comunic.client.ui.listeners.OnScrollChangeDetectListener;
 import org.communiquons.android.comunic.client.ui.listeners.onPostUpdateListener;
 import org.communiquons.android.comunic.client.ui.views.EditCommentContentView;
 import org.communiquons.android.comunic.client.ui.views.ScrollRecyclerView;
 
 import java.util.ArrayList;
+import java.util.Objects;
 
 /**
  * Posts list fragment
@@ -50,8 +56,8 @@ import java.util.ArrayList;
  * Created by pierre on 3/18/18.
  */
 
-public class PostsListFragment extends Fragment
+abstract class AbstractPostsListFragment extends Fragment
-    implements onPostUpdateListener, OnScrollChangeDetectListener {
+    implements onPostUpdateListener, OnScrollChangeDetectListener, PostsCreateFormFragment.OnPostCreated {
 
     /**
      * Menu action : no action
@@ -86,51 +92,80 @@ public class PostsListFragment extends Fragment
     /**
      * The list of posts
      */
-    PostsList mPostsList;
+    private PostsList mPostsList;
-
-    /**
-     * Events listener
-     */
-    private OnPostListFragmentsUpdateListener onPostListFragmentsUpdateListener = null;
 
     /**
      * Post adapter
      */
-    PostsAdapter mPostsAdapter;
+    private PostsAdapter mPostsAdapter;
-
-    /**
-     * The list of posts
-     */
-    ScrollRecyclerView mRecyclerView;
 
     /**
      * Posts helper
      */
-    PostsHelper mPostsHelper;
+    private PostsHelper mPostsHelper;
 
     /**
      * Comments helper
      */
-    CommentsHelper mCommentsHelper;
+    private CommentsHelper mCommentsHelper;
 
     /**
      * Users helper
      */
-    GetUsersHelper mUserHelper;
+    private GetUsersHelper mUserHelper;
 
     /**
      * Likes helper
      */
-    LikesHelper mLikesHelper;
+    private LikesHelper mLikesHelper;
 
     /**
-     * Set the list of posts of the fragment
+     * Views
-     *
-     * @param list The list of post
      */
-    public void setPostsList(PostsList list) {
+    private ScrollRecyclerView mRecyclerView;
-        this.mPostsList = list;
+    private ProgressBar mProgressBar;
-        mPostsAdapter = null;
+    private Button mCreatePostButton;
+    private FrameLayout mCreatePostLayout;
+    private TextView mNoPostsNotice;
+
+    /**
+     * Arguments used to create post form
+     */
+    Bundle mCreateFormArgs;
+
+
+    @Nullable
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment_postslist, container, false);
+    }
+
+    @Override
+    @CallSuper
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+
+        //Get views
+        mRecyclerView = view.findViewById(R.id.posts_list);
+        mProgressBar = view.findViewById(R.id.progressBar);
+        mCreatePostButton = view.findViewById(R.id.create_post_btn);
+        mCreatePostLayout = view.findViewById(R.id.create_post_form);
+        mNoPostsNotice = view.findViewById(R.id.no_post_notice);
+
+        //Setup posts list
+        mRecyclerView.setOnScrollChangeDetectListener(this);
+        mRecyclerView.addItemDecoration(new DividerItemDecoration(mRecyclerView.getContext(),
+                DividerItemDecoration.VERTICAL));
+
+        mCreatePostButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                setPostFormVisibility(mCreatePostLayout.getVisibility() != View.VISIBLE);
+            }
+        });
+
+        enablePostFormFragment(false);
+
     }
 
     @Override
@@ -148,32 +183,103 @@ public class PostsListFragment extends Fragment
 
         //Create likes helper
         mLikesHelper = new LikesHelper(getActivity());
-    }
 
-    @Nullable
-    @Override
-    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
-        return inflater.inflate(R.layout.fragment_postslist, container, false);
     }
 
     @Override
-    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+    public void onResume() {
-        super.onViewCreated(view, savedInstanceState);
+        super.onResume();
 
-        //Get the list view
+        if(mPostsList == null) {
-        mRecyclerView = view.findViewById(R.id.posts_list);
+            setProgressBarVisibility(true);
-        mRecyclerView.setOnScrollChangeDetectListener(this);
+            setNoPostsNoticeVisibility(false);
-        mRecyclerView.addItemDecoration(new DividerItemDecoration(mRecyclerView.getContext(),
+            onLoadPosts();
-                DividerItemDecoration.VERTICAL));
+        }
+        else{
+            setPostsList(getPostsList());
+            show_posts();
+        }
+    }
 
-        //Show the posts
+    /**
-        show();
+     * Set the list of posts of the fragment
+     *
+     * @param list The list of post
+     */
+    protected void setPostsList(PostsList list) {
+        this.mPostsList = list;
+        mPostsAdapter = null;
+    }
+
+    /**
+     * Get the current list of posts
+     *
+     * @return The current list of post / null if none
+     */
+    @NonNull
+    protected PostsList getPostsList(){
+        return this.mPostsList;
+    }
+
+    /**
+     * Check if a PostList has been set or not
+     *
+     * @return True if a list has been set / FALSE else
+     */
+    protected boolean hasPostsList(){
+        return this.mPostsList != null;
+    }
+
+    /**
+     * Load posts
+     */
+    public abstract void onLoadPosts();
+
+    /**
+     * Load more posts
+     *
+     * @param last_post_id The ID of the last post in the list
+     */
+    public abstract void onLoadMorePosts(int last_post_id);
+
+    /**
+     * This method is triggered when we have got a new list of posts to apply
+     *
+     * @param list The list
+     */
+    @CallSuper
+    protected void onGotNewPosts(@Nullable PostsList list){
+
+        setProgressBarVisibility(false);
+
+        if(getActivity() == null)
+            return;
+
+        if(list == null){
+            Toast.makeText(getActivity(), R.string.err_get_posts_list, Toast.LENGTH_SHORT).show();
+            return;
+        }
+
+        if(!list.hasUsersInfo()){
+            Toast.makeText(getActivity(), R.string.err_get_user_info, Toast.LENGTH_SHORT).show();
+            return;
+        }
+
+        if(mPostsList == null)
+            mPostsList = list;
+        else {
+            //Merge posts list
+            mPostsList.addAll(list);
+            Objects.requireNonNull(mPostsList.getUsersInfo()).putAll(list.getUsersInfo());
+        }
+
+        show_posts();
     }
 
     /**
      * Display the list of posts
      */
-    public void show(){
+    public void show_posts(){
 
         //Check if the view has not been created yet...
         if(getView() == null)
@@ -195,8 +301,126 @@ public class PostsListFragment extends Fragment
         //Notify data set update
         mPostsAdapter.notifyDataSetChanged();
 
+        //Update no post notice visibility
+        setProgressBarVisibility(false);
+        setNoPostsNoticeVisibility(mPostsList.size() == 0);
     }
 
+    /**
+     * Get the ID of the last post in the list
+     *
+     * @return The ID of the last post in the list / -1 in case of failure
+     */
+    public int getLastPostID(){
+        if(!hasPostsList())
+            return -1;
+        if(getPostsList().size() < 1)
+            return -1;
+        return getPostsList().get(getPostsList().size() - 1).getId();
+    }
+
+    @Override
+    public void onReachTop() {
+        //Nothing
+    }
+
+    @Override
+    public void onReachBottom() {
+        if(hasPostsList() && getPostsList().size() > 0)
+            onLoadMorePosts(getLastPostID());
+    }
+
+
+    protected void setProgressBarVisibility(boolean visible){
+        mProgressBar.setVisibility(visible ? View.VISIBLE : View.GONE);
+    }
+
+    protected void setNoPostsNoticeVisibility(boolean visible){
+        mNoPostsNotice.setVisibility(visible ? View.VISIBLE : View.GONE);
+    }
+
+
+    //
+    //
+    //
+    //
+    // Posts form
+    //
+    //
+    //
+    //
+
+    /**
+     * Specify whether post form should be enabled or not
+     *
+     * @param enable TRUE to enable / FALSE else
+     */
+    protected void enablePostFormFragment(boolean enable){
+        mCreatePostButton.setVisibility(enable ? View.VISIBLE : View.GONE);
+    }
+
+    /**
+     * Initialize posts fragment
+     *
+     * @param page_type The type of the page
+     * @param page_id The ID of the page
+     */
+    protected void init_create_post_fragment(int page_type, int page_id){
+
+        //Can not perform a transaction if the state has been saved
+        if(isStateSaved())
+            return;
+
+        //Create bundle
+        Bundle args = new Bundle();
+        args.putInt(PostsCreateFormFragment.PAGE_TYPE_ARG, page_type);
+        args.putInt(PostsCreateFormFragment.PAGE_ID_ARG, page_id);
+        mCreateFormArgs = new Bundle(args);
+
+        //Create fragment
+        PostsCreateFormFragment fragment = new PostsCreateFormFragment();
+        fragment.setArguments(args);
+        fragment.setOnPostCreatedListener(this);
+
+        //Perform transaction
+        FragmentTransaction transaction = getChildFragmentManager().beginTransaction();
+        transaction.replace(R.id.create_post_form, fragment);
+        transaction.commit();
+
+        //Hide the post form by default
+        setPostFormVisibility(false);
+    }
+
+
+    /**
+     * Set post form visibility
+     */
+    protected void setPostFormVisibility(boolean visible){
+        mCreatePostLayout.setVisibility(visible ? View.VISIBLE : View.GONE);
+    }
+
+    @Override
+    public void onPostCreated(Post post) {
+        init_create_post_fragment(mCreateFormArgs.getInt(PostsCreateFormFragment.PAGE_TYPE_ARG),
+                mCreateFormArgs.getInt(PostsCreateFormFragment.PAGE_ID_ARG));
+        setPostsList(null);
+        setProgressBarVisibility(true);
+        setNoPostsNoticeVisibility(false);
+        onLoadPosts();
+    }
+
+
+
+    //
+    //
+    //
+    //
+    // Posts actions
+    //
+    //
+    //
+    //
+
     @Override
     public void onCreateComment(int pos, final View button, final Post post,
                                 final EditCommentContentView input) {
@@ -673,27 +897,4 @@ public class PostsListFragment extends Fragment
 
         return super.onContextItemSelected(item);
     }
-
-    public OnPostListFragmentsUpdateListener getOnPostListFragmentsUpdateListener() {
-        return onPostListFragmentsUpdateListener;
-    }
-
-    public void setOnPostListFragmentsUpdateListener(
-            OnPostListFragmentsUpdateListener onPostListFragmentsUpdateListener) {
-        this.onPostListFragmentsUpdateListener = onPostListFragmentsUpdateListener;
-    }
-
-    @Override
-    public void onReachTop() {
-        //Nothing
-    }
-
-    @Override
-    public void onReachBottom() {
-
-        //Request more posts
-        if(onPostListFragmentsUpdateListener != null)
-            onPostListFragmentsUpdateListener.onLoadMorePosts();
-        
-    }
 }

app/src/main/java/org/communiquons/android/comunic/client/ui/fragments/LatestPostsFragment.java

@@ -1,28 +1,14 @@
 package org.communiquons.android.comunic.client.ui.fragments;
 
 import android.os.AsyncTask;
-import android.os.Bundle;
-import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
-import android.support.v4.app.Fragment;
-import android.support.v4.app.FragmentTransaction;
-import android.util.ArrayMap;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.ProgressBar;
-import android.widget.TextView;
 import android.widget.Toast;
 
 import org.communiquons.android.comunic.client.R;
 import org.communiquons.android.comunic.client.data.arrays.PostsList;
 import org.communiquons.android.comunic.client.data.asynctasks.SafeAsyncTask;
-import org.communiquons.android.comunic.client.data.helpers.GetUsersHelper;
-import org.communiquons.android.comunic.client.data.helpers.PostsHelper;
-import org.communiquons.android.comunic.client.data.models.UserInfo;
 import org.communiquons.android.comunic.client.ui.activities.MainActivity;
 import org.communiquons.android.comunic.client.ui.asynctasks.GetLatestPostsTask;
-import org.communiquons.android.comunic.client.ui.listeners.OnPostListFragmentsUpdateListener;
 
 /**
  * Latest posts fragment
@@ -31,55 +17,18 @@ import org.communiquons.android.comunic.client.ui.listeners.OnPostListFragmentsU
  * Created by pierre on 5/10/18.
  */
 
-public class LatestPostsFragment extends Fragment
+public class LatestPostsFragment extends AbstractPostsListFragment {
-        implements OnPostListFragmentsUpdateListener {
 
     /**
      * Debug tag
      */
     private static final String TAG = "LatestPostsFragment";
 
-    /**
-     * The list of posts
-     */
-    PostsList mPostsList;
-
-    /**
-     * Fragment that displays the list of posts
-     */
-    private PostsListFragment mPostsListFragment;
-
     /**
      * Load posts task
      */
     private GetLatestPostsTask mGetLatestPostsTask;
 
-    /**
-     * Loading progress bar
-     */
-    ProgressBar mProgressBar;
-
-    /**
-     * No posts notice
-     */
-    TextView mNoPostNotice;
-
-
-    @Nullable
-    @Override
-    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
-        return inflater.inflate(R.layout.fragment_latest_posts, container, false);
-    }
-
-    @Override
-    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
-        super.onViewCreated(view, savedInstanceState);
-
-        //Get some of the views
-        mProgressBar = view.findViewById(R.id.loading_progress);
-        mNoPostNotice = view.findViewById(R.id.no_post_notice);
-    }
-
     @Override
     public void onResume() {
         super.onResume();
@@ -87,28 +36,14 @@ public class LatestPostsFragment extends Fragment
         //Update dock and activity title
         getActivity().setTitle(R.string.fragment_latestposts_title);
         MainActivity.SetNavbarSelectedOption(getActivity(), R.id.action_latest_posts);
-
-        //Refresh the list of posts of the user
-        if(mPostsList == null)
-            refresh_posts_list();
-        else {
-            mPostsListFragment = null;
-            show_posts_list();
-        }
     }
 
     @Override
     public void onStop() {
         super.onStop();
-
         unset_all_load_tasks();
     }
 
-    @Override
-    public void onSaveInstanceState(@NonNull Bundle outState) {
-        super.onSaveInstanceState(outState);
-        unset_all_load_tasks();
-    }
 
     /**
      * Unset all pending load tasks
@@ -132,36 +67,53 @@ public class LatestPostsFragment extends Fragment
 
     }
 
-    /**
+    @Override
-     * Refresh the list of posts of the user
+    public void onLoadPosts() {
-     */
-    private void refresh_posts_list(){
-
-        //Show progress bar / hide no posts notice
-        toggleLoadingBarVisibility(true);
-        toggleNoPostNoticeVisibility(false);
-
         //Get the list of latest posts
         unset_all_load_tasks();
         mGetLatestPostsTask = new GetLatestPostsTask(getActivity());
         mGetLatestPostsTask.setOnPostExecuteListener(new SafeAsyncTask.OnPostExecuteListener<PostsList>() {
             @Override
             public void OnPostExecute(PostsList posts) {
-                on_got_new_posts_list(posts);
+                onGotNewPosts(posts);
             }
         });
         mGetLatestPostsTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, 0);
     }
 
-    /**
+    @Override
-     * This function is called when we have got a new post list
+    public void onLoadMorePosts(int last_post_id) {
-     *
-     * @param list The new list of posts
-     */
-    private void on_got_new_posts_list(@Nullable PostsList list) {
 
-        //Hide loading bar
+        //Check if post loading is already locked
-        toggleLoadingBarVisibility(false);
+        if(is_loading_posts())
+            return;
+
+        if(!hasPostsList())
+            return;
+
+        if(getPostsList().size() == 0)
+            return;
+
+        setProgressBarVisibility(true);
+
+        //Get the ID of the oldest post to start from
+        int start = last_post_id - 1;
+
+        //Get older posts
+        mGetLatestPostsTask = new GetLatestPostsTask(getActivity());
+        mGetLatestPostsTask.setOnPostExecuteListener(new SafeAsyncTask.OnPostExecuteListener<PostsList>() {
+            @Override
+            public void OnPostExecute(PostsList posts) {
+                onGotNewPosts(posts);
+            }
+        });
+        mGetLatestPostsTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, start);
+    }
+
+    @Override
+    protected void onGotNewPosts(@Nullable PostsList list) {
+
+        setProgressBarVisibility(false);
 
         //Check for errors
         if (list == null) {
@@ -173,91 +125,7 @@ public class LatestPostsFragment extends Fragment
             return;
         }
 
-        //Save the list of posts
+        super.onGotNewPosts(list);
-        if (mPostsList == null)
-            mPostsList = list;
-        else {
-            mPostsList.addAll(list);
-            assert mPostsList.getUsersInfo() != null;
-            mPostsList.getUsersInfo().putAll(list.getUsersInfo());
     }
 
-        show_posts_list();
-    }
-
-    /**
-     * Show posts list
-     */
-    private void show_posts_list(){
-
-        //Hide loading bar
-        toggleLoadingBarVisibility(false);
-
-        if(mPostsListFragment == null){
-
-            //Apply the post fragment
-            mPostsListFragment = new PostsListFragment();
-            mPostsListFragment.setPostsList(mPostsList);
-            mPostsListFragment.setOnPostListFragmentsUpdateListener(this);
-
-            //Create and commit a transaction
-            FragmentTransaction transaction = getChildFragmentManager().beginTransaction();
-            transaction.replace(R.id.posts_list_target, mPostsListFragment);
-            transaction.commit();
-        }
-        else
-            //Append the new posts list
-            mPostsListFragment.show();
-
-        //Check if the posts list is empty
-        toggleNoPostNoticeVisibility(mPostsList.size() == 0);
-    }
-
-    @Override
-    public void onLoadMorePosts() {
-
-        //Check if post loading is already locked
-        if(is_loading_posts())
-            return;
-
-        if(mPostsList == null)
-            return;
-
-        if(mPostsList.size() == 0)
-            return;
-
-        //Display loading bar
-        toggleLoadingBarVisibility(true);
-
-        //Get the ID of the oldest post to start from
-        int start = mPostsList.get(mPostsList.size()-1).getId() - 1;
-
-        //Get older posts
-        mGetLatestPostsTask = new GetLatestPostsTask(getActivity());
-        mGetLatestPostsTask.setOnPostExecuteListener(new SafeAsyncTask.OnPostExecuteListener<PostsList>() {
-            @Override
-            public void OnPostExecute(PostsList posts) {
-                on_got_new_posts_list(posts);
-            }
-        });
-        mGetLatestPostsTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, start);
-    }
-
-    /**
-     * Toggle progress bar visibility
-     *
-     * @param visible Specify whether the progress bar should be visible or not
-     */
-    private void toggleLoadingBarVisibility(boolean visible){
-        mProgressBar.setVisibility(visible ? View.VISIBLE : View.GONE);
-    }
-
-    /**
-     * Toggle no post notice visibility
-     *
-     * @param visible The visibility of the no post notice
-     */
-    private void toggleNoPostNoticeVisibility(boolean visible){
-        mNoPostNotice.setVisibility(visible ? View.VISIBLE : View.GONE);
-    }
 }

app/src/main/java/org/communiquons/android/comunic/client/ui/fragments/SinglePostFragment.java

@@ -2,13 +2,7 @@ package org.communiquons.android.comunic.client.ui.fragments;
 
 import android.os.AsyncTask;
 import android.os.Bundle;
-import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
-import android.support.v4.app.Fragment;
-import android.support.v4.app.FragmentTransaction;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
 import android.widget.Toast;
 
 import org.communiquons.android.comunic.client.R;
@@ -25,7 +19,7 @@ import org.communiquons.android.comunic.client.ui.asynctasks.GetSinglePostTask;
  * Created by pierre on 4/12/18.
  */
 
-public class SinglePostFragment extends Fragment {
+public class SinglePostFragment extends AbstractPostsListFragment {
 
     /**
      * The name of the argument that contains the ID of the post to open
@@ -37,11 +31,6 @@ public class SinglePostFragment extends Fragment {
      */
     private int mPostID = 0;
 
-    /**
-     * Post list that contains only a single post
-     */
-    private PostsList mPostsList;
-
     /**
      * Get single post task
      */
@@ -52,28 +41,11 @@ public class SinglePostFragment extends Fragment {
         super.onCreate(savedInstanceState);
 
         //Get post ID
+        assert getArguments() != null;
         mPostID = getArguments().getInt(ARGUMENT_POST_ID);
 
     }
 
-    @Nullable
-    @Override
-    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
-        return inflater.inflate(R.layout.fragment_single_post, container, false);
-    }
-
-    @Override
-    public void onResume() {
-        super.onResume();
-
-        //Check if the fragment contains information about the post
-        if(mPostsList == null){
-            getPostInfo();
-        }
-        else
-            show_posts();
-    }
-
     @Override
     public void onStop() {
         super.onStop();
@@ -85,11 +57,8 @@ public class SinglePostFragment extends Fragment {
             mGetSinglePostTask.setOnPostExecuteListener(null);
     }
 
-    /**
+    @Override
-     * Get information about the post and its related users
+    public void onLoadPosts() {
-     */
-    private void getPostInfo(){
-
         //Perform the request in the background
         unset_all_tasks();
 
@@ -97,18 +66,22 @@ public class SinglePostFragment extends Fragment {
         mGetSinglePostTask.setOnPostExecuteListener(new SafeAsyncTask.OnPostExecuteListener<PostsList>() {
             @Override
             public void OnPostExecute(PostsList posts) {
-                onGotPostInfo(posts);
+                onGotNewPosts(posts);
             }
         });
         mGetSinglePostTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, mPostID);
     }
 
-    /**
+    @Override
-     * This method is triggered once we got information about the post
+    public void onLoadMorePosts(int last_post_id) {
-     */
+
-    private void onGotPostInfo(@Nullable PostsList list) {
+    }
+
+    @Override
+    protected void onGotNewPosts(@Nullable PostsList list) {
+
+        setProgressBarVisibility(false);
 
-        //Check if we did not get post information
         if (list == null) {
             Toast.makeText(getActivity(), R.string.err_get_post_info, Toast.LENGTH_SHORT).show();
             return;
@@ -120,25 +93,7 @@ public class SinglePostFragment extends Fragment {
             return;
         }
 
-        mPostsList = list;
+        super.onGotNewPosts(list);
-
-        show_posts();
     }
 
-    /**
-     * Show the list of posts
-     */
-    private void show_posts(){
-
-        //Apply the post fragment
-        PostsListFragment postsListFragment = new PostsListFragment();
-        postsListFragment.setPostsList(mPostsList);
-
-        //Create and commit a transaction
-        FragmentTransaction transaction = getChildFragmentManager().beginTransaction();
-        transaction.replace(R.id.posts_list_target, postsListFragment);
-        transaction.commit();
-
-
-    }
 }

app/src/main/java/org/communiquons/android/comunic/client/ui/fragments/UserPostsFragment.java

@@ -4,16 +4,8 @@ import android.os.AsyncTask;
 import android.os.Bundle;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
-import android.support.annotation.UiThread;
-import android.support.v4.app.Fragment;
-import android.support.v4.app.FragmentTransaction;
-import android.view.LayoutInflater;
 import android.view.View;
-import android.view.ViewGroup;
-import android.widget.Button;
-import android.widget.FrameLayout;
 import android.widget.ProgressBar;
-import android.widget.TextView;
 import android.widget.Toast;
 
 import org.communiquons.android.comunic.client.R;
@@ -21,15 +13,13 @@ import org.communiquons.android.comunic.client.data.arrays.PostsList;
 import org.communiquons.android.comunic.client.data.asynctasks.SafeAsyncTask;
 import org.communiquons.android.comunic.client.data.models.Post;
 import org.communiquons.android.comunic.client.ui.asynctasks.LoadUserPostsTask;
-import org.communiquons.android.comunic.client.ui.listeners.OnPostListFragmentsUpdateListener;
 
 /**
  * User posts fragment
  *
  * @author Pierre HUBERT
  */
-public class UserPostsFragment extends Fragment
+public class UserPostsFragment extends AbstractPostsListFragment {
-    implements PostsCreateFormFragment.OnPostCreated, OnPostListFragmentsUpdateListener {
 
     /**
      * Bundle arguments
@@ -47,41 +37,11 @@ public class UserPostsFragment extends Fragment
      */
     private boolean mCanPostsText;
 
-    /**
-     * The list of posts of the user
-     */
-    private PostsList mPostsList;
-
-    /**
-     * Create post button
-     */
-    private Button mCreatePostButton;
-
-    /**
-     * No post on user page notice
-     */
-    private TextView mNoPostNotice;
-
-    /**
-     * Create post layout
-     */
-    private FrameLayout mCreatePostLayout;
-
     /**
      * Load user posts task
      */
     private LoadUserPostsTask mLoadUserPostsTask;
 
-    /**
-     * Posts list fragment
-     */
-    private PostsListFragment mPostsListFragment;
-
-    /**
-     * Loading bar
-     */
-    private ProgressBar mProgressBar;
-
     @Override
     public void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -94,41 +54,14 @@ public class UserPostsFragment extends Fragment
         mCanPostsText = bundle.getBoolean(ARGUMENT_CAN_POST_TEXT);
     }
 
-    @Nullable
-    @Override
-    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
-        return inflater.inflate(R.layout.fragment_postswithform, container, false);
-    }
-
     @Override
     public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
 
-        //Get the views
-        mCreatePostButton = view.findViewById(R.id.create_post_btn);
-        mCreatePostLayout = view.findViewById(R.id.create_posts_form_target);
-        mNoPostNotice = view.findViewById(R.id.no_post_notice);
-        mProgressBar = view.findViewById(R.id.progressBar);
-
-        setNoPostNoticeVisibility(false);
-
-        mCreatePostButton.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View view) {
-                //Invert form visibility
-                setPostFormVisibility(mCreatePostLayout.getVisibility() != View.VISIBLE);
-            }
-        });
-
         //Add create post fragment, if possible
+        enablePostFormFragment(mCanPostsText);
         if(mCanPostsText)
-            init_create_post_fragment();
+            init_create_post_fragment(PostsCreateFormFragment.PAGE_TYPE_USER, mUserID);
-        else
-            mCreatePostButton.setVisibility(View.GONE);
-
-        //Load user posts
-        mPostsList = null;
-        load_posts();
     }
 
     @Override
@@ -154,13 +87,10 @@ public class UserPostsFragment extends Fragment
                 && mLoadUserPostsTask.getStatus() != AsyncTask.Status.FINISHED;
     }
 
-    /**
-     * Load user posts
-     */
-    private void load_posts(){
 
+    @Override
+    public void onLoadPosts() {
         cancel_load_task();
-        setProgressBarVisibility(true);
 
         mLoadUserPostsTask = new LoadUserPostsTask(mUserID, getActivity());
         mLoadUserPostsTask.setOnPostExecuteListener(new SafeAsyncTask.OnPostExecuteListener<PostsList>() {
@@ -169,132 +99,14 @@ public class UserPostsFragment extends Fragment
                 if(getActivity() == null)
                     return;
 
-                apply_posts(posts);
+                onGotNewPosts(posts);
             }
         });
         mLoadUserPostsTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
-
-    }
-
-    /**
-     * Apply the list of posts
-     */
-    @UiThread
-    private void apply_posts(@Nullable PostsList posts){
-
-        setProgressBarVisibility(false);
-
-        if(isStateSaved())
-            return;
-
-        //Check for errors
-        if(posts == null){
-            Toast.makeText(getActivity(), R.string.err_get_user_posts, Toast.LENGTH_SHORT).show();
-            return;
-        }
-
-        //Check we didn't get user information
-        if(!posts.hasUsersInfo()){
-            Toast.makeText(getActivity(), R.string.err_get_users_info, Toast.LENGTH_SHORT).show();
-            return;
-        }
-
-        //Create fragment if required
-        if(mPostsListFragment == null){
-            mPostsListFragment = new PostsListFragment();
-            mPostsListFragment.setPostsList(mPostsList);
-            mPostsListFragment.setOnPostListFragmentsUpdateListener(this);
-
-            FragmentTransaction transaction = getChildFragmentManager().beginTransaction();
-            transaction.replace(R.id.posts_list_target, mPostsListFragment);
-            transaction.commit();
-        }
-
-
-        if(mPostsList != null){
-
-            //Merge post information with existing one
-            mPostsList.addAll(posts);
-            assert mPostsList.getUsersInfo() != null;
-            mPostsList.getUsersInfo().putAll(posts.getUsersInfo());
-        }
-        else {
-            mPostsList = posts;
-            mPostsListFragment.setPostsList(mPostsList);
-        }
-
-
-        mPostsListFragment.show();
-
-        setNoPostNoticeVisibility(mPostsList.size() < 1);
-    }
-
-    /**
-     * Create and create post fragment
-     */
-    private void init_create_post_fragment(){
-
-        //Can not perform a transaction if the state has been saved
-        if(isStateSaved())
-            return;
-
-        //Create bundle
-        Bundle args = new Bundle();
-        args.putInt(PostsCreateFormFragment.PAGE_TYPE_ARG, PostsCreateFormFragment.PAGE_TYPE_USER);
-        args.putInt(PostsCreateFormFragment.PAGE_ID_ARG, mUserID);
-
-        //Create fragment
-        PostsCreateFormFragment fragment = new PostsCreateFormFragment();
-        fragment.setArguments(args);
-        fragment.setOnPostCreatedListener(this);
-
-        //Perform transaction
-        FragmentTransaction transaction = getChildFragmentManager().beginTransaction();
-        transaction.replace(R.id.create_posts_form_target, fragment);
-        transaction.commit();
-
-        //Hide the post form by default
-        setPostFormVisibility(false);
-    }
-
-    /**
-     * Update progress bar visibility
-     *
-     * @param visibility TRUE for visible / FALSE else
-     */
-    private void setProgressBarVisibility(boolean visibility){
-        mProgressBar.setVisibility(visibility ? View.VISIBLE : View.GONE);
-    }
-
-    /**
-     * Update post creation form visibility
-     *
-     * @param visible New visibility
-     */
-    private void setPostFormVisibility(boolean visible){
-        mCreatePostLayout.setVisibility(visible ? View.VISIBLE : View.GONE);
-        mCreatePostButton.setActivated(visible);
-    }
-
-    private void setNoPostNoticeVisibility(boolean visible){
-        mNoPostNotice.setVisibility(visible ? View.VISIBLE : View.GONE);
     }
 
     @Override
-    public void onPostCreated(Post post) {
+    public void onLoadMorePosts(int last_post_id) {
-        mPostsList = null;
-        load_posts();
-        init_create_post_fragment();
-    }
-
-    @Override
-    public void onLoadMorePosts() {
-
-        if(mPostsList == null)
-            return;
-
-        if(mPostsList.size() < 1)
-            return;
 
         if(is_loading_posts())
             return;
@@ -305,11 +117,31 @@ public class UserPostsFragment extends Fragment
         mLoadUserPostsTask.setOnPostExecuteListener(new SafeAsyncTask.OnPostExecuteListener<PostsList>() {
             @Override
             public void OnPostExecute(PostsList posts) {
-                apply_posts(posts);
+                onGotNewPosts(posts);
             }
         });
         mLoadUserPostsTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR,
-                mPostsList.get(mPostsList.size() -1).getId() -1);
+                last_post_id -1);
+    }
+
+
+    @Override
+    protected void onGotNewPosts(@Nullable PostsList list) {
+
+        //Check for errors
+        if(list == null){
+            Toast.makeText(getActivity(), R.string.err_get_user_posts, Toast.LENGTH_SHORT).show();
+            return;
+        }
+
+        //Check we didn't get user information
+        if(!list.hasUsersInfo()){
+            Toast.makeText(getActivity(), R.string.err_get_users_info, Toast.LENGTH_SHORT).show();
+            return;
+        }
+
+        super.onGotNewPosts(list);
+    }
+
 
 }
-}

app/src/main/java/org/communiquons/android/comunic/client/ui/listeners/OnPostListFragmentsUpdateListener.java

@@ -1,16 +0,0 @@
-package org.communiquons.android.comunic.client.ui.listeners;
-
-/**
- * Posts list fragment update listener
- *
- * @author Pierre HUBERT
- */
-
-public interface OnPostListFragmentsUpdateListener {
-
-    /**
-     * This method is triggered when the user request to load more posts
-     */
-    void onLoadMorePosts();
-
-}

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

@@ -1,29 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:orientation="vertical" android:layout_width="match_parent"
-    android:layout_height="match_parent">
-
-    <!-- Loading progress bar -->
-    <ProgressBar
-        android:id="@+id/loading_progress"
-        android:layout_width="50dp"
-        android:layout_height="50dp"
-        android:layout_centerVertical="true"
-        android:layout_centerHorizontal="true" />
-
-    <!-- No posts notice -->
-    <TextView
-        android:id="@+id/no_post_notice"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:text="@string/notice_no_latest_posts"
-        android:layout_centerHorizontal="true"
-        android:layout_marginTop="15dp" />
-
-    <!-- Posts list -->
-    <FrameLayout
-        android:id="@+id/posts_list_target"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent" />
-
-</RelativeLayout>

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

@@ -1,5 +1,58 @@
 <?xml version="1.0" encoding="utf-8"?>
-<org.communiquons.android.comunic.client.ui.views.ScrollRecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
+<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <LinearLayout
+        android:id="@+id/linearLayout2"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical">
+
+        <Button
+            android:id="@+id/create_post_btn"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/action_create_post" />
+
+        <!-- Posts form target -->
+        <FrameLayout
+            android:id="@+id/create_post_form"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout="@layout/post_create_form" />
+
+        <!-- No post notice -->
+        <TextView
+            android:id="@+id/no_post_notice"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:layout_marginTop="10dp"
+            android:text="@string/notice_no_post_yet" />
+
+        <!-- Posts target -->
+        <org.communiquons.android.comunic.client.ui.views.ScrollRecyclerView
             android:id="@+id/posts_list"
             android:layout_width="match_parent"
-    android:layout_height="match_parent" />
+            android:layout_height="0dp"
+            android:layout_weight="1" />
+
+    </LinearLayout>
+
+    <ProgressBar
+        android:id="@+id/progressBar"
+        style="?android:attr/progressBarStyle"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="8dp"
+        android:layout_marginEnd="8dp"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="8dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="@+id/linearLayout2"
+        app:layout_constraintTop_toTopOf="parent" />
+
+</android.support.constraint.ConstraintLayout>

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

@@ -1,60 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent">
-
-    <LinearLayout
-        android:id="@+id/linearLayout2"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:orientation="vertical">
-
-        <Button
-            android:id="@+id/create_post_btn"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:text="@string/action_create_post" />
-
-        <!-- Posts form target -->
-        <FrameLayout
-            android:id="@+id/create_posts_form_target"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:layout="@layout/post_create_form" />
-
-        <!-- No post notice -->
-        <TextView
-            android:id="@+id/no_post_notice"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_gravity="center"
-            android:layout_marginTop="10dp"
-            android:text="@string/notice_no_post_user_page" />
-
-        <!-- Posts target -->
-        <FrameLayout
-            android:id="@+id/posts_list_target"
-            android:layout_width="match_parent"
-            android:layout_height="0dp"
-            android:layout_weight="1"
-            tools:layout="@layout/fragment_postslist" />
-
-    </LinearLayout>
-
-    <ProgressBar
-        android:id="@+id/progressBar"
-        style="?android:attr/progressBarStyle"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_marginBottom="8dp"
-        android:layout_marginEnd="8dp"
-        android:layout_marginStart="8dp"
-        android:layout_marginTop="8dp"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="@+id/linearLayout2"
-        app:layout_constraintTop_toTopOf="parent" />
-
-</android.support.constraint.ConstraintLayout>

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

@@ -1,11 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:orientation="vertical" android:layout_width="match_parent"
-    android:layout_height="match_parent">
-
-    <FrameLayout
-        android:id="@+id/posts_list_target"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent" />
-
-</LinearLayout>

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

@@ -265,4 +265,6 @@
     <string name="err_update_conversation_message_content">Could not update conversation message content!</string>
     <string name="success_update_conversation_message_content">The content of the conversation message has been successfully updated!</string>
     <string name="err_get_older_posts">Could not get older posts!</string>
+    <string name="err_get_posts_list">Could not get the list of posts!</string>
+    <string name="notice_no_post_yet">There is no post to display here yet.</string>
 </resources>