Remove Android Framework code from presenters.

app/src/main/java/chat/rocket/android/authentication/login/presentation/LoginPresenter.kt

 package chat.rocket.android.authentication.login.presentation
 
-import android.widget.EditText
 import chat.rocket.android.authentication.presentation.AuthenticationNavigator
 import chat.rocket.android.core.lifecycle.CancelStrategy
 import chat.rocket.android.util.launchUI
-import chat.rocket.android.util.textContent
 import chat.rocket.common.RocketChatException
 import chat.rocket.common.RocketChatTwoFactorException
 import chat.rocket.core.RocketChatClient
-import chat.rocket.core.internal.rest.chatRooms
-import chat.rocket.core.internal.rest.getRoomFavoriteMessages
 import chat.rocket.core.internal.rest.login
-import chat.rocket.core.internal.rest.sendMessage
 import timber.log.Timber
 import javax.inject.Inject
 
@@ -20,16 +15,13 @@ class LoginPresenter @Inject constructor(private val view: LoginView,
                                          private val navigator: AuthenticationNavigator) {
     @Inject lateinit var client: RocketChatClient
 
-    fun authenticate(usernameOrEmailEditText: EditText, passwordEditText: EditText) {
-        val usernameOrEmail = usernameOrEmailEditText.textContent
-        val password = passwordEditText.textContent
-
+    fun authenticate(usernameOrEmail: String, password: String) {
         when {
             usernameOrEmail.isBlank() -> {
-                view.shakeView(usernameOrEmailEditText)
+                view.alertWrongUsernameOrEmail()
             }
             password.isEmpty() -> {
-                view.shakeView(passwordEditText)
+                view.alertWrongPassword()
             }
             else -> {
                 launchUI(strategy) {
@@ -58,6 +50,7 @@ class LoginPresenter @Inject constructor(private val view: LoginView,
         }
     }
 
-    fun signup() =
+    fun signup() {
         navigator.toSignUp(navigator.currentServer!!)
+    }
 }
\ No newline at end of file

app/src/main/java/chat/rocket/android/authentication/login/presentation/LoginView.kt

@@ -2,9 +2,8 @@ package chat.rocket.android.authentication.login.presentation
 
 import chat.rocket.android.core.behaviours.LoadingView
 import chat.rocket.android.core.behaviours.MessageView
-import chat.rocket.android.core.behaviours.ShakeView
 
-interface LoginView : LoadingView, MessageView, ShakeView {
+interface LoginView : LoadingView, MessageView {
 
     /**
      * Shows the oauth view if the server settings allow the login via social accounts.
@@ -63,4 +62,14 @@ interface LoginView : LoadingView, MessageView, ShakeView {
      * @param value True to show the sign up view, false otherwise.
      */
     fun showSignUpView(value: Boolean)
+
+    /**
+     * Alerts the user about a wrong inputted username or email.
+     */
+    fun alertWrongUsernameOrEmail()
+
+    /**
+     * Alerts the user about a wrong inputted password.
+     */
+    fun alertWrongPassword()
 }
\ No newline at end of file

app/src/main/java/chat/rocket/android/authentication/login/ui/LoginFragment.kt

 package chat.rocket.android.authentication.login.ui
 
 import DrawableHelper
+import android.content.Context
 import android.os.Build
 import android.os.Bundle
 import android.support.v4.app.Fragment
@@ -22,6 +23,8 @@ import javax.inject.Inject
 
 class LoginFragment : Fragment(), LoginView {
     @Inject lateinit var presenter: LoginPresenter
+    @Inject lateinit var appContext: Context
+
     private val layoutListener = ViewTreeObserver.OnGlobalLayoutListener {
         if (KeyboardHelper.isSoftKeyboardShown(scroll_view.rootView)) {
             showOauthView(false)
@@ -85,7 +88,7 @@ class LoginFragment : Fragment(), LoginView {
         showSignUpView(true)
         // -------------------------------------------------------------------------------------------------------------------
 
-        button_log_in.setOnClickListener { presenter.authenticate(text_username_or_email, text_password) }
+        button_log_in.setOnClickListener { presenter.authenticate(text_username_or_email.textContent, text_password.textContent) }
     }
 
     override fun onDestroyView() {
@@ -153,6 +156,18 @@ class LoginFragment : Fragment(), LoginView {
         text_new_to_rocket_chat.setVisibility(value)
     }
 
+    override fun alertWrongUsernameOrEmail() {
+        AnimationHelper.vibrateSmartPhone(appContext)
+        AnimationHelper.shakeView(text_username_or_email)
+        text_username_or_email.requestFocus()
+    }
+
+    override fun alertWrongPassword() {
+        AnimationHelper.vibrateSmartPhone(appContext)
+        AnimationHelper.shakeView(text_password)
+        text_password.requestFocus()
+    }
+
     override fun showLoading() {
         enableUserInput(false)
         view_loading.show()
@@ -167,12 +182,6 @@ class LoginFragment : Fragment(), LoginView {
         Toast.makeText(activity, message, Toast.LENGTH_SHORT).show()
     }
 
-    override fun shakeView(viewToShake: View) {
-        AnimationHelper.vibrateSmartPhone(viewToShake.context)
-        AnimationHelper.shakeView(viewToShake)
-        viewToShake.requestFocus()
-    }
-
     private fun tintEditTextDrawableStart() {
         activity?.applicationContext?.apply {
             val personDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_assignment_ind_black_24dp, this)

app/src/main/java/chat/rocket/android/authentication/signup/presentation/SignupPresenter.kt

 package chat.rocket.android.authentication.signup.presentation
 
-import android.widget.EditText
 import chat.rocket.android.authentication.presentation.AuthenticationNavigator
 import chat.rocket.android.core.lifecycle.CancelStrategy
 import chat.rocket.android.util.launchUI
-import chat.rocket.android.util.textContent
 import chat.rocket.common.RocketChatException
 import chat.rocket.core.RocketChatClient
 import chat.rocket.core.internal.rest.login
@@ -17,35 +15,29 @@ class SignupPresenter @Inject constructor(private val view: SignupView,
                                           private val navigator: AuthenticationNavigator) {
     @Inject lateinit var client: RocketChatClient
 
-    fun signup(nameEditText: EditText, usernameEditText: EditText, passwordEditText: EditText, emailEditText: EditText) {
-        val name = nameEditText.textContent
-        val username = usernameEditText.textContent
-        val password = passwordEditText.textContent
-        val email = emailEditText.textContent
-
+    fun signup(name: String, username: String, password: String, email: String) {
         when {
             name.isBlank() -> {
-                view.shakeView(nameEditText)
+                view.alertBlankName()
             }
             username.isBlank() -> {
-                view.shakeView(usernameEditText)
+                view.alertBlankUsername()
             }
             password.isEmpty() -> {
-                view.shakeView(passwordEditText)
+                view.alertEmptyPassword()
             }
             email.isBlank() -> {
-                view.shakeView(emailEditText)
+                view.alertBlankEmail()
             }
             else -> {
                 launchUI(strategy) {
                     view.showLoading()
-
                     try {
                         val user = client.signup(email, name, username, password)
                         Timber.d("Created user: $user")
 
                         val token = client.login(username, password)
-                        Timber.d("Logged in: $token")
+                        Timber.d("Logged in. Token: $token")
 
                         navigator.toChatList()
                     } catch (ex: RocketChatException) {

app/src/main/java/chat/rocket/android/authentication/signup/presentation/SignupView.kt

@@ -2,6 +2,26 @@ package chat.rocket.android.authentication.signup.presentation
 
 import chat.rocket.android.core.behaviours.LoadingView
 import chat.rocket.android.core.behaviours.MessageView
-import chat.rocket.android.core.behaviours.ShakeView
 
-interface SignupView : LoadingView, MessageView, ShakeView
+interface SignupView : LoadingView, MessageView {
\ No newline at end of file
+
+    /**
+     * Alerts the user about a blank name.
+     */
+    fun alertBlankName()
+
+    /**
+     * Alerts the user about a blank username.
+     */
+    fun alertBlankUsername()
+
+    /**
+     * Alerts the user about a empty password.
+     */
+    fun alertEmptyPassword()
+
+    /**
+     * Alerts the user about a blank email.
+     */
+    fun alertBlankEmail()
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/authentication/signup/ui/SignupFragment.kt

@@ -15,6 +15,7 @@ import chat.rocket.android.helper.AnimationHelper
 import chat.rocket.android.helper.KeyboardHelper
 import chat.rocket.android.helper.TextHelper
 import chat.rocket.android.util.setVisibility
+import chat.rocket.android.util.textContent
 import dagger.android.support.AndroidSupportInjection
 import kotlinx.android.synthetic.main.fragment_authentication_sign_up.*
 import javax.inject.Inject
@@ -68,7 +69,7 @@ class SignupFragment : Fragment(), SignupView {
         setUpNewUserAgreementListener()
 
         button_sign_up.setOnClickListener {
-            presenter.signup(text_name, text_username, text_password, text_email)
+            presenter.signup(text_name.textContent, text_username.textContent, text_password.textContent, text_email.textContent)
         }
     }
 
@@ -77,6 +78,30 @@ class SignupFragment : Fragment(), SignupView {
         constraint_layout.viewTreeObserver.removeOnGlobalLayoutListener(layoutListener)
     }
 
+    override fun alertBlankName() {
+        AnimationHelper.vibrateSmartPhone(appContext)
+        AnimationHelper.shakeView(text_name)
+        text_name.requestFocus()
+    }
+
+    override fun alertBlankUsername() {
+        AnimationHelper.vibrateSmartPhone(appContext)
+        AnimationHelper.shakeView(text_username)
+        text_username.requestFocus()
+    }
+
+    override fun alertEmptyPassword() {
+        AnimationHelper.vibrateSmartPhone(appContext)
+        AnimationHelper.shakeView(text_password)
+        text_password.requestFocus()
+    }
+
+    override fun alertBlankEmail() {
+        AnimationHelper.vibrateSmartPhone(appContext)
+        AnimationHelper.shakeView(text_email)
+        text_email.requestFocus()
+    }
+
     override fun showLoading() {
         enableUserInput(false)
         view_loading.show()
@@ -91,12 +116,6 @@ class SignupFragment : Fragment(), SignupView {
         Toast.makeText(activity, message, Toast.LENGTH_SHORT).show()
     }
 
-    override fun shakeView(viewToShake: View) {
-        AnimationHelper.vibrateSmartPhone(appContext)
-        AnimationHelper.shakeView(viewToShake)
-        viewToShake.requestFocus()
-    }
-
     private fun tintEditTextDrawableStart() {
         val personDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_person_black_24dp, appContext)
         val atDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_at_black_24dp, appContext)

app/src/main/java/chat/rocket/android/authentication/twofactor/presentation/TwoFAPresenter.kt

 package chat.rocket.android.authentication.twofactor.presentation
 
-import android.widget.EditText
-import chat.rocket.android.authentication.infraestructure.AuthTokenRepository
 import chat.rocket.android.authentication.presentation.AuthenticationNavigator
 import chat.rocket.android.core.lifecycle.CancelStrategy
 import chat.rocket.android.util.launchUI
-import chat.rocket.android.util.textContent
 import chat.rocket.common.RocketChatException
-import chat.rocket.common.util.PlatformLogger
 import chat.rocket.core.RocketChatClient
 import chat.rocket.core.internal.rest.login
-import okhttp3.HttpUrl
-import okhttp3.OkHttpClient
+import timber.log.Timber
 import javax.inject.Inject
 
 class TwoFAPresenter @Inject constructor(private val view: TwoFAView,
@@ -20,16 +15,16 @@ class TwoFAPresenter @Inject constructor(private val view: TwoFAView,
     @Inject lateinit var client: RocketChatClient
 
     // TODO: If the usernameOrEmail and password was informed by the user on the previous screen, then we should pass only the pin, like this: fun authenticate(pin: EditText)
-    fun authenticate(usernameOrEmail: String, password: String, pin: EditText) {
-        val twoFACode = pin.textContent
-        if (twoFACode.isBlank()) {
-            view.shakeView(pin)
+    fun authenticate(usernameOrEmail: String, password: String, twoFactorAuthenticationCode: String) {
+        if (twoFactorAuthenticationCode.isBlank()) {
+            view.alertBlankTwoFactorAuthenticationCode()
         } else {
             launchUI(strategy) {
                 view.showLoading()
                 try {
-                    val token = client.login(usernameOrEmail, password, twoFACode)
-                    // Todo Salve token.
+                    val token = client.login(usernameOrEmail, password, twoFactorAuthenticationCode)
+                    Timber.d("Created token: $token")
+                    // Todo Salve token?.
                     navigator.toChatList()
                 } catch (ex: RocketChatException) {
                     val errorMessage = ex.message

app/src/main/java/chat/rocket/android/authentication/twofactor/presentation/TwoFAView.kt

@@ -2,6 +2,11 @@ package chat.rocket.android.authentication.twofactor.presentation
 
 import chat.rocket.android.core.behaviours.LoadingView
 import chat.rocket.android.core.behaviours.MessageView
-import chat.rocket.android.core.behaviours.ShakeView
 
-interface TwoFAView : LoadingView, MessageView, ShakeView
+interface TwoFAView : LoadingView, MessageView {
\ No newline at end of file
+
+    /**
+     * Alerts the user about a blank two factor authentication code.
+     */
+    fun alertBlankTwoFactorAuthenticationCode()
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/authentication/twofactor/ui/TwoFAFragment.kt

 package chat.rocket.android.authentication.twofactor.ui
 
 import DrawableHelper
+import android.content.Context
 import android.os.Build
 import android.os.Bundle
 import android.support.v4.app.Fragment
@@ -14,12 +15,14 @@ import chat.rocket.android.authentication.twofactor.presentation.TwoFAPresenter
 import chat.rocket.android.authentication.twofactor.presentation.TwoFAView
 import chat.rocket.android.helper.AnimationHelper
 import chat.rocket.android.util.setVisibility
+import chat.rocket.android.util.textContent
 import dagger.android.support.AndroidSupportInjection
 import kotlinx.android.synthetic.main.fragment_authentication_two_fa.*
 import javax.inject.Inject
 
 class TwoFAFragment : Fragment(), TwoFAView {
     @Inject lateinit var presenter: TwoFAPresenter
+    @Inject lateinit var appContext: Context    
     lateinit var serverUrl: String
     lateinit var username: String
     lateinit var password: String
@@ -60,10 +63,15 @@ class TwoFAFragment : Fragment(), TwoFAView {
         }
 
         button_log_in.setOnClickListener {
-            presenter.authenticate(username, password, text_two_factor_auth)
+            presenter.authenticate(username, password, text_two_factor_auth.textContent)
         }
     }
 
+    override fun alertBlankTwoFactorAuthenticationCode() {
+        AnimationHelper.vibrateSmartPhone(appContext)
+        AnimationHelper.shakeView(text_two_factor_auth)
+    }
+
     override fun showLoading() {
         view_loading.setVisibility(true)
     }
@@ -76,11 +84,6 @@ class TwoFAFragment : Fragment(), TwoFAView {
         Toast.makeText(activity, message, Toast.LENGTH_SHORT).show()
     }
 
-    override fun shakeView(viewToShake: View) {
-        AnimationHelper.vibrateSmartPhone(viewToShake.context)
-        AnimationHelper.shakeView(viewToShake)
-    }
-
     private fun tintEditTextDrawableStart() {
         activity?.applicationContext?.apply {
             val lockDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_vpn_key_black_24dp, this)