initial commit

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

@@ -0,0 +1,47 @@
+package com.keylesspalace.tusky;
+
+import android.support.v7.widget.LinearLayoutManager;
+import android.support.v7.widget.RecyclerView;
+
+public abstract class EndlessOnScrollListener extends RecyclerView.OnScrollListener {
+    private int visibleThreshold = 15;
+    private int currentPage = 0;
+    private int previousTotalItemCount = 0;
+    private boolean loading = true;
+    private int startingPageIndex = 0;
+    private LinearLayoutManager layoutManager;
+
+    public EndlessOnScrollListener(LinearLayoutManager layoutManager) {
+        this.layoutManager = layoutManager;
+    }
+
+    @Override
+    public void onScrolled(RecyclerView view, int dx, int dy) {
+        int totalItemCount = layoutManager.getItemCount();
+        int lastVisibleItemPosition = layoutManager.findLastVisibleItemPosition();
+        if (totalItemCount < previousTotalItemCount) {
+            currentPage = startingPageIndex;
+            previousTotalItemCount = totalItemCount;
+            if (totalItemCount == 0) {
+                loading = true;
+            }
+        }
+        if (loading && totalItemCount > previousTotalItemCount) {
+            loading = false;
+            previousTotalItemCount = totalItemCount;
+        }
+        if (!loading && lastVisibleItemPosition + visibleThreshold > totalItemCount) {
+            currentPage++;
+            onLoadMore(currentPage, totalItemCount, view);
+            loading = true;
+        }
+    }
+
+    public void reset() {
+        currentPage = startingPageIndex;
+        previousTotalItemCount = 0;
+        loading = true;
+    }
+
+    public abstract void onLoadMore(int page, int totalItemsCount, RecyclerView view);
+}

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

@@ -0,0 +1,9 @@
+package com.keylesspalace.tusky;
+
+import java.io.IOException;
+import java.util.List;
+
+public interface FetchTimelineListener {
+    void onFetchTimelineSuccess(List<Status> statuses, boolean added);
+    void onFetchTimelineFailure(IOException e);
+}

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

@@ -0,0 +1,235 @@
+package com.keylesspalace.tusky;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.os.AsyncTask;
+import android.os.Build;
+import android.text.Html;
+import android.text.Spanned;
+import android.util.JsonReader;
+import android.util.JsonToken;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.UnsupportedEncodingException;
+import java.net.URL;
+import java.net.URLEncoder;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.net.ssl.HttpsURLConnection;
+
+public class FetchTimelineTask extends AsyncTask<String, Void, Boolean> {
+    private Context context;
+    private FetchTimelineListener fetchTimelineListener;
+    private String domain;
+    private String accessToken;
+    private String fromId;
+    private List<com.keylesspalace.tusky.Status> statuses;
+    private IOException ioException;
+
+    public FetchTimelineTask(
+            Context context, FetchTimelineListener listener, String domain, String accessToken,
+            String fromId) {
+        super();
+        this.context = context;
+        fetchTimelineListener = listener;
+        this.domain = domain;
+        this.accessToken = accessToken;
+        this.fromId = fromId;
+    }
+
+    private Date parseDate(String dateTime) {
+        Date date;
+        String s = dateTime.replace("Z", "+00:00");
+        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ");
+        try {
+            date = format.parse(s);
+        } catch (ParseException e) {
+            e.printStackTrace();
+            return null;
+        }
+        return date;
+    }
+
+    private CharSequence trimTrailingWhitespace(CharSequence s) {
+        int i = s.length();
+        do {
+            i--;
+        } while (i >= 0 && Character.isWhitespace(s.charAt(i)));
+        return s.subSequence(0, i + 1);
+    }
+
+    private Spanned compatFromHtml(String html) {
+        Spanned result;
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+            result = Html.fromHtml(html, Html.FROM_HTML_MODE_LEGACY);
+        } else {
+            result = Html.fromHtml(html);
+        }
+            /* Html.fromHtml returns trailing whitespace if the html ends in a </p> tag, which
+             * all status contents do, so it should be trimmed. */
+        return (Spanned) trimTrailingWhitespace(result);
+    }
+
+    private com.keylesspalace.tusky.Status readStatus(JsonReader reader, boolean isReblog)
+            throws IOException {
+        JsonToken check = reader.peek();
+        if (check == JsonToken.NULL) {
+            reader.skipValue();
+            return null;
+        }
+        String id = null;
+        String displayName = null;
+        String username = null;
+        com.keylesspalace.tusky.Status reblog = null;
+        String content = null;
+        String avatar = null;
+        Date createdAt = null;
+        reader.beginObject();
+        while (reader.hasNext()) {
+            String name = reader.nextName();
+            switch (name) {
+                case "id": {
+                    id = reader.nextString();
+                    break;
+                }
+                case "account": {
+                    reader.beginObject();
+                    while (reader.hasNext()) {
+                        name = reader.nextName();
+                        switch (name) {
+                            case "acct": {
+                                username = reader.nextString();
+                                break;
+                            }
+                            case "display_name": {
+                                displayName = reader.nextString();
+                                break;
+                            }
+                            case "avatar": {
+                                avatar = reader.nextString();
+                                break;
+                            }
+                            default: {
+                                reader.skipValue();
+                                break;
+                            }
+                        }
+                    }
+                    reader.endObject();
+                    break;
+                }
+                case "reblog": {
+                        /* This case shouldn't be hit after the first recursion at all. But if this
+                         * method is passed unusual data this check will prevent extra recursion */
+                    if (!isReblog) {
+                        assert(false);
+                        reblog = readStatus(reader, true);
+                    }
+                    break;
+                }
+                case "content": {
+                    content = reader.nextString();
+                    break;
+                }
+                case "created_at": {
+                    createdAt = parseDate(reader.nextString());
+                    break;
+                }
+                default: {
+                    reader.skipValue();
+                    break;
+                }
+            }
+        }
+        reader.endObject();
+        assert(username != null);
+        com.keylesspalace.tusky.Status status;
+        if (reblog != null) {
+            status = reblog;
+            status.setRebloggedByUsername(username);
+        } else {
+            assert(content != null);
+            Spanned contentPlus = compatFromHtml(content);
+            status = new com.keylesspalace.tusky.Status(
+                    id, displayName, username, contentPlus, avatar, createdAt);
+        }
+        return status;
+    }
+
+    private String parametersToQuery(Map<String, String> parameters)
+            throws UnsupportedEncodingException {
+        StringBuilder s = new StringBuilder();
+        String between = "";
+        for (Map.Entry<String, String> entry : parameters.entrySet()) {
+            s.append(between);
+            s.append(URLEncoder.encode(entry.getKey(), "UTF-8"));
+            s.append("=");
+            s.append(URLEncoder.encode(entry.getValue(), "UTF-8"));
+            between = "&";
+        }
+        String urlParameters = s.toString();
+        return "?" + urlParameters;
+    }
+
+    @Override
+    protected Boolean doInBackground(String... data) {
+        Boolean successful = true;
+        HttpsURLConnection connection = null;
+        try {
+            String endpoint = context.getString(R.string.endpoint_timelines_home);
+            String query = "";
+            if (fromId != null) {
+                Map<String, String> parameters = new HashMap<>();
+                if (fromId != null) {
+                    parameters.put("max_id", fromId);
+                }
+                query = parametersToQuery(parameters);
+            }
+            URL url = new URL("https://" + domain + endpoint + query);
+            connection = (HttpsURLConnection) url.openConnection();
+            connection.setRequestMethod("GET");
+            connection.setRequestProperty("Authorization", "Bearer " + accessToken);
+            connection.connect();
+
+            statuses = new ArrayList<>(20);
+            JsonReader reader = new JsonReader(
+                    new InputStreamReader(connection.getInputStream(), "UTF-8"));
+            reader.beginArray();
+            while (reader.hasNext()) {
+                statuses.add(readStatus(reader, false));
+            }
+            reader.endArray();
+            reader.close();
+        } catch (IOException e) {
+            ioException = e;
+            successful = false;
+        } finally {
+            if (connection != null) {
+                connection.disconnect();
+            }
+        }
+        return successful;
+    }
+
+    @Override
+    protected void onPostExecute(Boolean wasSuccessful) {
+        super.onPostExecute(wasSuccessful);
+        if (fetchTimelineListener != null) {
+            if (wasSuccessful) {
+                fetchTimelineListener.onFetchTimelineSuccess(statuses, fromId != null);
+            } else {
+                assert(ioException != null);
+                fetchTimelineListener.onFetchTimelineFailure(ioException);
+            }
+        }
+    }
+}

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

@@ -0,0 +1,250 @@
+package com.keylesspalace.tusky;
+
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.net.Uri;
+import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.Toolbar;
+import android.view.MenuItem;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+
+import com.android.volley.Request;
+import com.android.volley.Response;
+import com.android.volley.VolleyError;
+import com.android.volley.toolbox.JsonObjectRequest;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.io.UnsupportedEncodingException;
+import java.net.URLEncoder;
+import java.util.HashMap;
+import java.util.Map;
+
+public class LoginActivity extends AppCompatActivity {
+    private SharedPreferences preferences;
+    private String domain;
+    private String clientId;
+    private String clientSecret;
+
+    /**
+     * Chain together the key-value pairs into a query string, for either appending to a URL or
+     * as the content of an HTTP request.
+     */
+    private String toQueryString(Map<String, String> parameters)
+            throws UnsupportedEncodingException {
+        StringBuilder s = new StringBuilder();
+        String between = "";
+        for (Map.Entry<String, String> entry : parameters.entrySet()) {
+            s.append(between);
+            s.append(URLEncoder.encode(entry.getKey(), "UTF-8"));
+            s.append("=");
+            s.append(URLEncoder.encode(entry.getValue(), "UTF-8"));
+            between = "&";
+        }
+        return s.toString();
+    }
+
+    /** Make sure the user-entered text is just a fully-qualified domain name. */
+    private String validateDomain(String s) {
+        s = s.replaceFirst("http://", "");
+        s = s.replaceFirst("https://", "");
+        return s;
+    }
+
+    private String getOauthRedirectUri() {
+        String scheme = getString(R.string.oauth_scheme);
+        String host = getString(R.string.oauth_redirect_host);
+        return scheme + "://" + host + "/";
+    }
+
+    private void redirectUserToAuthorizeAndLogin() {
+        /* To authorize this app and log in it's necessary to redirect to the domain given,
+         * activity_login there, and the server will redirect back to the app with its response. */
+        String endpoint = getString(R.string.endpoint_authorize);
+        String redirectUri = getOauthRedirectUri();
+        Map<String, String> parameters = new HashMap<>();
+        parameters.put("client_id", clientId);
+        parameters.put("redirect_uri", redirectUri);
+        parameters.put("response_type", "code");
+        String queryParameters;
+        try {
+            queryParameters = toQueryString(parameters);
+        } catch (UnsupportedEncodingException e) {
+            //TODO: No clue how to handle this error case??
+            assert(false);
+            return;
+        }
+        String url = "https://" + domain + endpoint + "?" + queryParameters;
+        Intent viewIntent = new Intent("android.intent.action.VIEW", Uri.parse(url));
+        startActivity(viewIntent);
+    }
+
+    /**
+     * Obtain the oauth client credentials for this app. This is only necessary the first time the
+     * app is run on a given server instance. So, after the first authentication, they are
+     * saved in SharedPreferences and every subsequent run they are simply fetched from there.
+     */
+    private void onButtonClick(final EditText editText) {
+        domain = validateDomain(editText.getText().toString());
+        assert(domain != null);
+        /* Attempt to get client credentials from SharedPreferences, and if not present
+         * (such as in the case that the domain has never been accessed before)
+         * authenticate with the server and store the received credentials to use next
+         * time. */
+        clientId = preferences.getString(domain + "/client_id", null);
+        clientSecret = preferences.getString(domain + "/client_secret", null);
+        if (clientId != null && clientSecret != null) {
+            redirectUserToAuthorizeAndLogin();
+        } else {
+            String endpoint = getString(R.string.endpoint_apps);
+            String url = "https://" + domain + endpoint;
+            JSONObject parameters = new JSONObject();
+            try {
+                parameters.put("client_name", getString(R.string.app_name));
+                parameters.put("redirect_uris", getOauthRedirectUri());
+                parameters.put("scopes", "read write follow");
+            } catch (JSONException e) {
+                //TODO: error text????
+                return;
+            }
+            JsonObjectRequest request = new JsonObjectRequest(
+                    Request.Method.POST, url, parameters,
+                    new Response.Listener<JSONObject>() {
+                        @Override
+                        public void onResponse(JSONObject response) {
+                            try {
+                                clientId = response.getString("client_id");
+                                clientSecret = response.getString("client_secret");
+                            } catch (JSONException e) {
+                                //TODO: Heck
+                                return;
+                            }
+                            SharedPreferences.Editor editor = preferences.edit();
+                            editor.putString(domain + "/client_id", clientId);
+                            editor.putString(domain + "/client_secret", clientSecret);
+                            editor.apply();
+                            redirectUserToAuthorizeAndLogin();
+                        }
+                    }, new Response.ErrorListener() {
+                        @Override
+                        public void onErrorResponse(VolleyError error) {
+                            editText.setError(
+                                    "This app could not obtain authentication from that server " +
+                                    "instance.");
+                            error.printStackTrace();
+                        }
+                    });
+            VolleySingleton.getInstance(this).addToRequestQueue(request);
+        }
+    }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_login);
+        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+        preferences = getSharedPreferences(
+                getString(R.string.preferences_file_key), Context.MODE_PRIVATE);
+        Button button = (Button) findViewById(R.id.button_login);
+        final EditText editText = (EditText) findViewById(R.id.edit_text_domain);
+        button.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                onButtonClick(editText);
+            }
+        });
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+        SharedPreferences.Editor editor = preferences.edit();
+        editor.putString("domain", domain);
+        editor.putString("clientId", clientId);
+        editor.putString("clientSecret", clientSecret);
+        editor.commit();
+    }
+
+    private void onLoginSuccess(String accessToken) {
+        SharedPreferences.Editor editor = preferences.edit();
+        editor.putString("accessToken", accessToken);
+        editor.apply();
+        Intent intent = new Intent(this, MainActivity.class);
+        startActivity(intent);
+        finish();
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        /* Check if we are resuming during authorization by seeing if the intent contains the
+         * redirect that was given to the server. If so, its response is here! */
+        Uri uri = getIntent().getData();
+        String redirectUri = getOauthRedirectUri();
+        if (uri != null && uri.toString().startsWith(redirectUri)) {
+            // This should either have returned an authorization code or an error.
+            String code = uri.getQueryParameter("code");
+            String error = uri.getQueryParameter("error");
+            final TextView errorText = (TextView) findViewById(R.id.text_error);
+            if (code != null) {
+                /* During the redirect roundtrip this Activity usually dies, which wipes out the
+                 * instance variables, so they have to be recovered from where they were saved in
+                 * SharedPreferences. */
+                domain = preferences.getString("domain", null);
+                clientId = preferences.getString("clientId", null);
+                clientSecret = preferences.getString("clientSecret", null);
+                /* Since authorization has succeeded, the final step to log in is to exchange
+                 * the authorization code for an access token. */
+                JSONObject parameters = new JSONObject();
+                try {
+                    parameters.put("client_id", clientId);
+                    parameters.put("client_secret", clientSecret);
+                    parameters.put("redirect_uri", redirectUri);
+                    parameters.put("code", code);
+                    parameters.put("grant_type", "authorization_code");
+                } catch (JSONException e) {
+                    errorText.setText("Heck.");
+                    //TODO: I don't even know how to handle this error state.
+                }
+                String endpoint = getString(R.string.endpoint_token);
+                String url = "https://" + domain + endpoint;
+                JsonObjectRequest request = new JsonObjectRequest(
+                    Request.Method.POST, url, parameters,
+                    new Response.Listener<JSONObject>() {
+                        @Override
+                        public void onResponse(JSONObject response) {
+                            String accessToken = "";
+                            try {
+                                accessToken = response.getString("access_token");
+                            } catch(JSONException e) {
+                                errorText.setText("Heck.");
+                                //TODO: I don't even know how to handle this error state.
+                            }
+                            onLoginSuccess(accessToken);
+                        }
+                    }, new Response.ErrorListener() {
+                        @Override
+                        public void onErrorResponse(VolleyError error) {
+                            errorText.setText(error.getMessage());
+                        }
+                    });
+                VolleySingleton.getInstance(this).addToRequestQueue(request);
+            } else if (error != null) {
+                /* Authorization failed. Put the error response where the user can read it and they
+                 * can try again. */
+                errorText.setText(error);
+            } else {
+                assert(false);
+                // This case means a junk response was received somehow.
+                errorText.setText("An unidentified authorization error occurred.");
+            }
+        }
+    }
+}

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

@@ -0,0 +1,132 @@
+package com.keylesspalace.tusky;
+
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.graphics.drawable.Drawable;
+import android.support.v4.content.ContextCompat;
+import android.support.v4.widget.SwipeRefreshLayout;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.support.v7.widget.DividerItemDecoration;
+import android.support.v7.widget.LinearLayoutManager;
+import android.support.v7.widget.RecyclerView;
+import android.support.v7.widget.Toolbar;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.widget.Toast;
+
+import java.io.IOException;
+import java.util.List;
+
+public class MainActivity extends AppCompatActivity implements FetchTimelineListener,
+        SwipeRefreshLayout.OnRefreshListener {
+
+    private String domain = null;
+    private String accessToken = null;
+    private SwipeRefreshLayout swipeRefreshLayout;
+    private RecyclerView recyclerView;
+    private TimelineAdapter adapter;
+    private LinearLayoutManager layoutManager;
+    private EndlessOnScrollListener scrollListener;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+
+        SharedPreferences preferences = getSharedPreferences(
+                getString(R.string.preferences_file_key), Context.MODE_PRIVATE);
+        domain = preferences.getString("domain", null);
+        accessToken = preferences.getString("accessToken", null);
+        assert(domain != null);
+        assert(accessToken != null);
+
+        // Setup the SwipeRefreshLayout.
+        swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipe_refresh_layout);
+        swipeRefreshLayout.setOnRefreshListener(this);
+        // Setup the RecyclerView.
+        recyclerView = (RecyclerView) findViewById(R.id.recycler_view);
+        recyclerView.setHasFixedSize(true);
+        layoutManager = new LinearLayoutManager(this);
+        recyclerView.setLayoutManager(layoutManager);
+        DividerItemDecoration divider = new DividerItemDecoration(
+                this, layoutManager.getOrientation());
+        Drawable drawable = ContextCompat.getDrawable(this, R.drawable.status_divider);
+        divider.setDrawable(drawable);
+        recyclerView.addItemDecoration(divider);
+        scrollListener = new EndlessOnScrollListener(layoutManager) {
+            @Override
+            public void onLoadMore(int page, int totalItemsCount, RecyclerView view) {
+                TimelineAdapter adapter = (TimelineAdapter) view.getAdapter();
+                String fromId = adapter.getItem(adapter.getItemCount() - 1).getId();
+                sendFetchTimelineRequest(fromId);
+            }
+        };
+        recyclerView.addOnScrollListener(scrollListener);
+        adapter = new TimelineAdapter();
+        recyclerView.setAdapter(adapter);
+
+        sendFetchTimelineRequest();
+    }
+
+    private void sendFetchTimelineRequest(String fromId) {
+        new FetchTimelineTask(this, this, domain, accessToken, fromId).execute();
+    }
+
+    private void sendFetchTimelineRequest() {
+        sendFetchTimelineRequest(null);
+    }
+
+    public void onFetchTimelineSuccess(List<Status> statuses, boolean added) {
+        if (added) {
+            adapter.addItems(statuses);
+        } else {
+            adapter.update(statuses);
+        }
+        swipeRefreshLayout.setRefreshing(false);
+    }
+
+    public void onFetchTimelineFailure(IOException exception) {
+        Toast.makeText(this, R.string.error_fetching_timeline, Toast.LENGTH_SHORT).show();
+        swipeRefreshLayout.setRefreshing(false);
+    }
+
+    public void onRefresh() {
+        sendFetchTimelineRequest();
+    }
+
+
+    private void logOut() {
+        SharedPreferences preferences = getSharedPreferences(
+                getString(R.string.preferences_file_key), Context.MODE_PRIVATE);
+        SharedPreferences.Editor editor = preferences.edit();
+        editor.remove("domain");
+        editor.remove("accessToken");
+        editor.apply();
+        Intent intent = new Intent(this, SplashActivity.class);
+        startActivity(intent);
+        finish();
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.main_toolbar, menu);
+        return super.onCreateOptionsMenu(menu);
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case R.id.action_logout: {
+                logOut();
+                return true;
+            }
+            default: {
+                return super.onOptionsItemSelected(item);
+            }
+        }
+    }
+}

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

@@ -0,0 +1,28 @@
+package com.keylesspalace.tusky;
+
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
+
+public class SplashActivity extends AppCompatActivity {
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        /* Determine whether the user is currently logged in, and if so go ahead and load the
+         * timeline. Otherwise, start the activity_login screen. */
+        SharedPreferences preferences = getSharedPreferences(
+                getString(R.string.preferences_file_key), Context.MODE_PRIVATE);
+        String domain = preferences.getString("domain", null);
+        String accessToken = preferences.getString("accessToken", null);
+        Intent intent;
+        if (domain != null && accessToken != null) {
+            intent = new Intent(this, MainActivity.class);
+        } else {
+            intent = new Intent(this, LoginActivity.class);
+        }
+        startActivity(intent);
+        finish();
+    }
+}

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

@@ -0,0 +1,77 @@
+package com.keylesspalace.tusky;
+
+import android.text.Spanned;
+
+import java.util.Date;
+
+public class Status {
+    private String id;
+    private String displayName;
+    /** the username with the remote domain appended, like @domain.name, if it's a remote account */
+    private String username;
+    /** the main text of the status, marked up with style for links & mentions, etc */
+    private Spanned content;
+    /** the fully-qualified url of the avatar image */
+    private String avatar;
+    private String rebloggedByUsername;
+    /** when the status was initially created */
+    private Date createdAt;
+
+    public Status(String id, String displayName, String username, Spanned content, String avatar,
+                  Date createdAt) {
+        this.id = id;
+        this.displayName = displayName;
+        this.username = username;
+        this.content = content;
+        this.avatar = avatar;
+        this.createdAt = createdAt;
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public String getDisplayName() {
+        return displayName;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public Spanned getContent() {
+        return content;
+    }
+
+    public String getAvatar() {
+        return avatar;
+    }
+
+    public Date getCreatedAt() {
+        return createdAt;
+    }
+
+    public String getRebloggedByUsername() {
+        return rebloggedByUsername;
+    }
+
+    public void setRebloggedByUsername(String name) {
+        rebloggedByUsername = name;
+    }
+
+    @Override
+    public int hashCode() {
+        return id.hashCode();
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        if (this.id == null) {
+            return this == other;
+        } else if (!(other instanceof Status)) {
+            return false;
+        }
+        Status status = (Status) other;
+        return status.id.equals(this.id);
+    }
+}

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

@@ -0,0 +1,193 @@
+package com.keylesspalace.tusky;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.support.v7.widget.RecyclerView;
+import android.text.Spanned;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import com.android.volley.toolbox.ImageLoader;
+import com.android.volley.toolbox.NetworkImageView;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+public class TimelineAdapter extends RecyclerView.Adapter {
+    private List<Status> statuses = new ArrayList<>();
+
+    /*
+    TootActionListener listener;
+
+    public TimelineAdapter(TootActionListener listener) {
+        super();
+        this.listener = listener;
+    }
+    */
+
+    @Override
+    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
+        View v = LayoutInflater.from(viewGroup.getContext())
+                .inflate(R.layout.item_status, viewGroup, false);
+        return new ViewHolder(v);
+    }
+
+    @Override
+    public void onBindViewHolder(RecyclerView.ViewHolder viewHolder, int position) {
+        ViewHolder holder = (ViewHolder) viewHolder;
+        Status status = statuses.get(position);
+        holder.setDisplayName(status.getDisplayName());
+        holder.setUsername(status.getUsername());
+        holder.setCreatedAt(status.getCreatedAt());
+        holder.setContent(status.getContent());
+        holder.setAvatar(status.getAvatar());
+        holder.setContent(status.getContent());
+        String rebloggedByUsername = status.getRebloggedByUsername();
+        if (rebloggedByUsername == null) {
+            holder.hideReblogged();
+        } else {
+            holder.setRebloggedByUsername(rebloggedByUsername);
+        }
+        // holder.initButtons(mListener, position);
+    }
+
+    @Override
+    public int getItemCount() {
+        return statuses.size();
+    }
+
+    public int update(List<Status> new_statuses) {
+        int scrollToPosition;
+        if (statuses == null || statuses.isEmpty()) {
+            statuses = new_statuses;
+            scrollToPosition = 0;
+        } else {
+            int index = new_statuses.indexOf(statuses.get(0));
+            if (index == -1) {
+                statuses.addAll(0, new_statuses);
+                scrollToPosition = 0;
+            } else {
+                statuses.addAll(0, new_statuses.subList(0, index));
+                scrollToPosition = index;
+            }
+        }
+        notifyDataSetChanged();
+        return scrollToPosition;
+    }
+
+    public void addItems(List<Status> new_statuses) {
+        int end = statuses.size();
+        statuses.addAll(new_statuses);
+        notifyItemRangeInserted(end, new_statuses.size());
+    }
+
+    public Status getItem(int position) {
+        return statuses.get(position);
+    }
+
+    public static class ViewHolder extends RecyclerView.ViewHolder {
+        private TextView displayName;
+        private TextView username;
+        private TextView sinceCreated;
+        private TextView content;
+        private NetworkImageView avatar;
+        private ImageView boostedIcon;
+        private TextView boostedByUsername;
+
+        public ViewHolder(View itemView) {
+            super(itemView);
+            displayName = (TextView) itemView.findViewById(R.id.status_display_name);
+            username = (TextView) itemView.findViewById(R.id.status_username);
+            sinceCreated = (TextView) itemView.findViewById(R.id.status_since_created);
+            content = (TextView) itemView.findViewById(R.id.status_content);
+            avatar = (NetworkImageView) itemView.findViewById(R.id.status_avatar);
+            boostedIcon = (ImageView) itemView.findViewById(R.id.status_boosted_icon);
+            boostedByUsername = (TextView) itemView.findViewById(R.id.status_boosted);
+            /*
+            mReplyButton = (ImageButton) itemView.findViewById(R.id.reply);
+            mRetweetButton = (ImageButton) itemView.findViewById(R.id.retweet);
+            mFavoriteButton = (ImageButton) itemView.findViewById(R.id.favorite);
+            */
+        }
+
+        public void setDisplayName(String name) {
+            displayName.setText(name);
+        }
+
+        public void setUsername(String name) {
+            Context context = username.getContext();
+            String format = context.getString(R.string.status_username_format);
+            String usernameText = String.format(format, name);
+            username.setText(usernameText);
+        }
+
+        public void setContent(Spanned content) {
+            this.content.setText(content);
+        }
+
+        public void setAvatar(String url) {
+            Context context = avatar.getContext();
+            ImageLoader imageLoader = VolleySingleton.getInstance(context).getImageLoader();
+            avatar.setImageUrl(url, imageLoader);
+            avatar.setDefaultImageResId(R.drawable.avatar_default);
+            avatar.setErrorImageResId(R.drawable.avatar_error);
+        }
+
+        /* This is a rough duplicate of android.text.format.DateUtils.getRelativeTimeSpanString,
+         * but even with the FORMAT_ABBREV_RELATIVE flag it wasn't abbreviating enough. */
+        private String getRelativeTimeSpanString(long then, long now) {
+            final long MINUTE = 60;
+            final long HOUR = 60 * MINUTE;
+            final long DAY = 24 * HOUR;
+            final long YEAR = 365 * DAY;
+            long span = (now - then) / 1000;
+            String prefix = "";
+            if (span < 0) {
+                prefix = "in ";
+                span = -span;
+            }
+            String unit;
+            if (span < MINUTE) {
+                unit = "s";
+            } else if (span < HOUR) {
+                span /= MINUTE;
+                unit = "m";
+            } else if (span < DAY) {
+                span /= HOUR;
+                unit = "h";
+            } else if (span < YEAR) {
+                span /= DAY;
+                unit = "d";
+            } else {
+                span /= YEAR;
+                unit = "y";
+            }
+            return prefix + span + unit;
+        }
+
+        public void setCreatedAt(Date createdAt) {
+            long then = createdAt.getTime();
+            long now = new Date().getTime();
+            String since = getRelativeTimeSpanString(then, now);
+            sinceCreated.setText(since);
+        }
+
+        public void setRebloggedByUsername(String name) {
+            Context context = boostedByUsername.getContext();
+            String format = context.getString(R.string.status_boosted_format);
+            String boostedText = String.format(format, name);
+            boostedByUsername.setText(boostedText);
+            boostedIcon.setVisibility(View.VISIBLE);
+            boostedByUsername.setVisibility(View.VISIBLE);
+        }
+
+        public void hideReblogged() {
+            boostedIcon.setVisibility(View.GONE);
+            boostedByUsername.setVisibility(View.GONE);
+        }
+    }
+}

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

@@ -0,0 +1,60 @@
+package com.keylesspalace.tusky;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.support.v4.util.LruCache;
+
+import com.android.volley.Request;
+import com.android.volley.RequestQueue;
+import com.android.volley.toolbox.ImageLoader;
+import com.android.volley.toolbox.Volley;
+
+public class VolleySingleton {
+    private static VolleySingleton instance;
+    private RequestQueue requestQueue;
+    private ImageLoader imageLoader;
+    private static Context context;
+
+    private VolleySingleton(Context context) {
+        VolleySingleton.context = context;
+        requestQueue = getRequestQueue();
+        imageLoader = new ImageLoader(requestQueue,
+                new ImageLoader.ImageCache() {
+                    private final LruCache<String, Bitmap> cache = new LruCache<>(20);
+
+                    @Override
+                    public Bitmap getBitmap(String url) {
+                        return cache.get(url);
+                    }
+
+                    @Override
+                    public void putBitmap(String url, Bitmap bitmap) {
+                        cache.put(url, bitmap);
+                    }
+                });
+    }
+
+    public static synchronized VolleySingleton getInstance(Context context) {
+        if (instance == null) {
+            instance = new VolleySingleton(context);
+        }
+        return instance;
+    }
+
+    public RequestQueue getRequestQueue() {
+        if (requestQueue == null) {
+            /* getApplicationContext() is key, it keeps you from leaking the
+             * Activity or BroadcastReceiver if someone passes one in. */
+            requestQueue= Volley.newRequestQueue(context.getApplicationContext());
+        }
+        return requestQueue;
+    }
+
+    public <T> void addToRequestQueue(Request<T> request) {
+        getRequestQueue().add(request);
+    }
+
+    public ImageLoader getImageLoader() {
+        return imageLoader;
+    }
+}