fix coding style bugs

app/src/main/java/chat/rocket/android/fragment/AbstractWebViewFragment.java

@@ -13,23 +13,26 @@ import chat.rocket.android.R;
 import chat.rocket.android.helper.OnBackPressListener;
 import hugo.weaving.DebugLog;
 
-public abstract class AbstractWebViewFragment extends AbstractFragment implements OnBackPressListener {
+public abstract class AbstractWebViewFragment extends AbstractFragment
+    implements OnBackPressListener {
   private WebView webview;
-  private WebViewClient mWebViewClient = new WebViewClient() {
-    private boolean mError;
+  private WebViewClient webviewClient = new WebViewClient() {
+    private boolean error;
 
     @Override public void onPageStarted(WebView webview, String url, Bitmap favicon) {
-      mError = false;
+      error = false;
     }
 
     @Override public void onPageFinished(WebView webview, String url) {
-      if (!mError) onPageLoaded(webview, url);
+      if (!error) {
+        onPageLoaded(webview, url);
+      }
     }
 
     @Override
     public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) {
       super.onReceivedError(view, request, error);
-      mError = true;
+      this.error = true;
     }
 
     @Override public boolean shouldOverrideUrlLoading(WebView webview, String url) {
@@ -37,7 +40,8 @@ public abstract class AbstractWebViewFragment extends AbstractFragment implement
           || super.shouldOverrideUrlLoading(webview, url);
     }
 
-    @DebugLog @Override
+    @DebugLog
+    @Override
     public void onFormResubmission(WebView view, Message dontResend, Message resend) {
       //resend POST request without confirmation.
       resend.sendToTarget();
@@ -61,7 +65,7 @@ public abstract class AbstractWebViewFragment extends AbstractFragment implement
       settings.setJavaScriptEnabled(true);
     }
     webview.setHorizontalScrollBarEnabled(false);
-    webview.setWebViewClient(mWebViewClient);
+    webview.setWebViewClient(webviewClient);
 
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
       WebView.setWebContentsDebuggingEnabled(true);

app/src/main/java/chat/rocket/android/fragment/oauth/GitHubOAuthWebViewFragment.java

@@ -11,6 +11,7 @@ import chat.rocket.android.fragment.AbstractWebViewFragment;
 import chat.rocket.android.helper.LogcatIfError;
 import chat.rocket.android.model.MeteorLoginServiceConfiguration;
 import chat.rocket.android.model.ServerConfig;
+import java.nio.charset.Charset;
 import jp.co.crowdworks.realm_java_helpers.RealmHelper;
 import jp.co.crowdworks.realm_java_helpers_bolts.RealmHelperBolts;
 import okhttp3.HttpUrl;
@@ -26,6 +27,9 @@ public class GitHubOAuthWebViewFragment extends AbstractWebViewFragment {
   private String url;
   private boolean resultOK;
 
+  /**
+   * create new Fragment with ServerConfig-ID.
+   */
   public static Fragment create(final String serverConfigId) {
     Bundle args = new Bundle();
     args.putString("server_config_id", serverConfigId);
@@ -70,7 +74,7 @@ public class GitHubOAuthWebViewFragment extends AbstractWebViewFragment {
           .put("credentialToken", "github" + System.currentTimeMillis())
           .put("isCordova", true)
           .toString()
-          .getBytes(), Base64.NO_WRAP);
+          .getBytes(Charset.forName("UTF-8")), Base64.NO_WRAP);
 
       return new HttpUrl.Builder().scheme("https")
           .host("github.com")
@@ -123,8 +127,9 @@ public class GitHubOAuthWebViewFragment extends AbstractWebViewFragment {
 
 
     if (url.contains(hostname) && url.contains("_oauth/github?close")) {
-      webview.loadUrl(
-          "javascript:window._rocketchet_hook.handleConfig(document.getElementById('config').innerText);");
+      final String jsHookUrl = "javascript:"
+          + "window._rocketchet_hook.handleConfig(document.getElementById('config').innerText);";
+      webview.loadUrl(jsHookUrl);
     }
   }
 
@@ -133,17 +138,17 @@ public class GitHubOAuthWebViewFragment extends AbstractWebViewFragment {
   }
 
   private static final class JSInterface {
-    private final JSInterfaceCallback mCallback;
+    private final JSInterfaceCallback jsInterfaceCallback;
 
-    public JSInterface(JSInterfaceCallback callback) {
-      mCallback = callback;
+    JSInterface(JSInterfaceCallback callback) {
+      jsInterfaceCallback = callback;
     }
 
     @JavascriptInterface public void handleConfig(String config) {
       try {
-        mCallback.hanldeResult(new JSONObject(config));
-      } catch (Exception e) {
-        mCallback.hanldeResult(null);
+        jsInterfaceCallback.hanldeResult(new JSONObject(config));
+      } catch (Exception exception) {
+        jsInterfaceCallback.hanldeResult(null);
       }
     }
   }

app/src/main/java/chat/rocket/android/fragment/server_config/AuthenticatingFragment.java

@@ -5,6 +5,7 @@ import android.widget.TextView;
 import chat.rocket.android.R;
 
 /**
+ * Just show "Authenticating..."
  */
 public class AuthenticatingFragment extends AbstractServerConfigFragment {
   @Override protected int getLayout() {
@@ -14,6 +15,6 @@ public class AuthenticatingFragment extends AbstractServerConfigFragment {
   @Override protected void onSetupView() {
     TextView caption = (TextView) rootView.findViewById(R.id.txt_caption);
     caption.setVisibility(View.VISIBLE);
-    caption.setText("Authenticationg...");
+    caption.setText("Authenticating...");
   }
 }
\ No newline at end of file

app/src/main/java/chat/rocket/android/fragment/server_config/LoginFragment.java

@@ -14,6 +14,7 @@ import chat.rocket.android.model.ServerConfigCredential;
 import chat.rocket.android.renderer.ServerConfigCredentialRenderer;
 import io.realm.Realm;
 import io.realm.RealmResults;
+import java.nio.charset.Charset;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.util.List;
@@ -56,7 +57,9 @@ public class LoginFragment extends AbstractServerConfigFragment {
     btnEmail.setOnClickListener(view -> {
       final CharSequence username = txtUsername.getText();
       final CharSequence passwd = txtPasswd.getText();
-      if (TextUtils.isEmpty(username) || TextUtils.isEmpty(passwd)) return;
+      if (TextUtils.isEmpty(username) || TextUtils.isEmpty(passwd)) {
+        return;
+      }
 
       RealmHelperBolts.executeTransaction(realm ->
           realm.createOrUpdateObjectFromJson(ServerConfig.class, new JSONObject()
@@ -75,7 +78,8 @@ public class LoginFragment extends AbstractServerConfigFragment {
   }
 
   private void showErrorIfNeeded() {
-    ServerConfig config = RealmHelper.executeTransactionForRead(realm -> realm.where(ServerConfig.class)
+    ServerConfig config = RealmHelper.executeTransactionForRead(realm ->
+        realm.where(ServerConfig.class)
             .equalTo("id", serverConfigId)
             .isNotNull("credential.errorMessage")
             .findFirst());
@@ -105,14 +109,14 @@ public class LoginFragment extends AbstractServerConfigFragment {
     } catch (NoSuchAlgorithmException exception) {
       return null;
     }
-    messageDigest.update(orig.getBytes());
+    messageDigest.update(orig.getBytes(Charset.forName("UTF-8")));
 
-    StringBuilder sb = new StringBuilder();
+    StringBuilder stringBuilder = new StringBuilder();
     for (byte b : messageDigest.digest()) {
-      sb.append(String.format("%02x", b & 0xff));
+      stringBuilder.append(String.format("%02x", b & 0xff));
     }
 
-    return sb.toString();
+    return stringBuilder.toString();
   }
 
   private void onRenderAuthProviders(List<MeteorLoginServiceConfiguration> authProviders) {

app/src/main/java/chat/rocket/android/model/ServerConfigCredential.java

@@ -9,6 +9,7 @@ import jp.co.crowdworks.realm_java_helpers_bolts.RealmHelperBolts;
 import org.json.JSONException;
 import org.json.JSONObject;
 
+@SuppressWarnings("PMD.ShortVariable")
 public class ServerConfigCredential extends RealmObject {
   public static final String TYPE_EMAIL = "email";
   public static final String TYPE_TWITTER = "twitter";

app/src/main/java/chat/rocket/android/renderer/AbstractRenderer.java

@@ -21,7 +21,9 @@ abstract class AbstractRenderer<T> {
   protected boolean shouldHandle(View target, Condition additionalCondition, Optional optional,
       String key) {
     if (target == null || object == null) {
-      if (optional != null) optional.onNoData(key);
+      if (optional != null) {
+        optional.onNoData(key);
+      }
       return false;
     }
 

app/src/main/java/chat/rocket/android/renderer/ServerConfigCredentialRenderer.java

@@ -5,11 +5,17 @@ import android.widget.TextView;
 import chat.rocket.android.helper.TextUtils;
 import chat.rocket.android.model.ServerConfigCredential;
 
+/**
+ * renderer class for ServerConfigCredential.
+ */
 public class ServerConfigCredentialRenderer extends AbstractRenderer<ServerConfigCredential> {
   public ServerConfigCredentialRenderer(Context context, ServerConfigCredential credential) {
     super(context, credential);
   }
 
+  /**
+   * Inject username into TextView.
+   */
   public ServerConfigCredentialRenderer usernameInto(TextView textView) {
     if (!shouldHandle(textView)) {
       return this;

app/src/main/java/chat/rocket/android/service/RocketChatWebSocketThread.java

@@ -129,8 +129,8 @@ public class RocketChatWebSocketThread extends HandlerThread {
     }
     socketExists = true;
 
-    final ServerConfig config = RealmHelper.executeTransactionForRead(
-      realm -> realm.where(ServerConfig.class).equalTo("id", serverConfigId).findFirst());
+    final ServerConfig config = RealmHelper.executeTransactionForRead(realm ->
+        realm.where(ServerConfig.class).equalTo("id", serverConfigId).findFirst());
 
     prepareWebSocket(config);
     return webSocketAPI.connect(config.getSession()).onSuccessTask(task -> {
@@ -180,7 +180,8 @@ public class RocketChatWebSocketThread extends HandlerThread {
 
     for (Class clazz : REGISTERABLE_CLASSES) {
       try {
-        Constructor ctor = clazz.getConstructor(Context.class, String.class, RocketChatWebSocketAPI.class);
+        Constructor ctor = clazz.getConstructor(Context.class, String.class,
+            RocketChatWebSocketAPI.class);
         Object obj = ctor.newInstance(appContext, serverConfigId, webSocketAPI);
 
         if (obj instanceof Registerable) {

app/src/main/java/chat/rocket/android/ws/RocketChatWebSocketAPI.java

@@ -102,25 +102,30 @@ public class RocketChatWebSocketAPI {
             .put("credentialToken", credential.getCredentialToken())
             .put("credentialSecret", credential.getCredentialSecret()));
       }
-    }
-    catch (JSONException e) {
-      return Task.forError(e);
+    } catch (JSONException exception) {
+      return Task.forError(exception);
     }
 
     return ddpClient.rpc("login", new JSONArray().put(param), generateId("login"));
   }
 
+  /**
+   * Login with token.
+   */
   public Task<DDPClientCallback.RPC> loginWithToken(final String token) {
     JSONObject param = new JSONObject();
     try {
       param.put("resume", token);
-    } catch (JSONException e) {
-      return Task.forError(e);
+    } catch (JSONException exception) {
+      return Task.forError(exception);
     }
 
     return ddpClient.rpc("login", new JSONArray().put(param), generateId("login-token"));
   }
 
+  /**
+   * Logout.
+   */
   public Task<DDPClientCallback.RPC> logout() {
     return ddpClient.rpc("logout", null, generateId("logout"));
   }

config/quality/checkstyle/checkstyle-config.xml

@@ -27,12 +27,6 @@
     <property name="eachLine" value="true"/>
   </module>
 
-  <module name="SuppressionCommentFilter">
-    <property name="offCommentFormat" value="CHECKSTYLE:OFF (\w+)"/>
-    <property name="onCommentFormat" value="CHECKSTYLE:ON (\w+)"/>
-    <property name="checkFormat" value="$1"/>
-  </module>
-  
   <module name="SuppressionFilter">
     <property name="file" value="config/quality/checkstyle/checkstyle-suppressions.xml"/>
   </module>