Merge pull request #547 from filipedelimabrito/layout/authentication-screens

[V2][LAYOUT] Authentication screens.

app/src/main/AndroidManifest.xml

@@ -11,6 +11,20 @@
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
-        android:theme="@style/AppTheme" />
+        android:theme="@style/AppTheme">
 
+        <activity
+            android:name=".app.AuthenticationActivity"
+            android:configChanges="orientation"
+            android:screenOrientation="portrait"
+            android:theme="@style/AuthenticationTheme">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+    </application>
 </manifest>
\ No newline at end of file

app/src/main/java/chat/rocket/android/app/AuthenticationActivity.kt

+package chat.rocket.android.app
+
+import android.app.Activity
+import android.app.Fragment
+import android.os.Bundle
+import chat.rocket.android.R
+
+/**
+ * @author Filipe de Lima Brito (filipedelimabrito@gmail.com)
+ */
+class AuthenticationActivity : Activity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_authentication)
+
+        LayoutHelper.androidBug5497Workaround(this)
+        addFragment(AuthenticationLoginFragment(), "authenticationServerFragment")
+    }
+
+    private fun addFragment(fragment: Fragment, tag: String) {
+        fragmentManager.beginTransaction().add(R.id.fragment_container, fragment, tag).commit()
+    }
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/app/AuthenticationLoginFragment.kt

+package chat.rocket.android.app
+
+import DrawableHelper
+import android.app.Fragment
+import android.content.res.Configuration
+import android.os.Build
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.view.WindowManager
+import android.widget.ScrollView
+import chat.rocket.android.R
+import kotlinx.android.synthetic.main.fragment_authentication_log_in.*
+
+/**
+ * @author Filipe de Lima Brito (filipedelimabrito@gmail.com)
+ */
+class AuthenticationLoginFragment : Fragment() {
+
+    override fun onCreateView(inflater: LayoutInflater?, container: ViewGroup?, savedInstanceState: Bundle?): View? = inflater?.inflate(R.layout.fragment_authentication_log_in, container, false)
+
+    override fun onViewCreated(view: View?, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        activity.window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN)
+
+        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.M) {
+            tintEditTextDrawableStart()
+        }
+
+        // Just an example: if the server allow the login via social accounts (oauth authentication) then show the respective interface.
+        shouldShowOauthView(true)
+        // In this case we need to setup the text_username_or_email and text_password EditText to hide and show the oauth interface when the user touch the respective fields.
+        setupEditTextListener()
+
+        // Show the first three social account's ImageButton (REMARK: we must show at maximum *three* views)
+        showLoginUsingFacebookImagebutton()
+        showLoginUsingGithubImagebutton()
+        showLoginUsingGoogleImagebutton()
+
+        // Setup the FloatingActionButton to show more social account's ImageButton (it expands the social accounts interface to show more views).
+        setupFabListener()
+
+        // Just an example: if the server allow the new users registration then show the respective interface.
+        shouldShowSignUpMsgView(true)
+    }
+
+    override fun onConfigurationChanged(newConfig: Configuration?) {
+        super.onConfigurationChanged(newConfig)
+
+        if (KeyboardHelper.isHardKeyboardShown(newConfig)) {
+            shouldShowOauthView(false)
+            shouldShowSignUpMsgView(false)
+            shouldShowLoginButton(true)
+        } else {
+            if (isEditTextNullOrBlank()) {
+                shouldShowOauthView(true)
+                shouldShowSignUpMsgView(true)
+                shouldShowLoginButton(false)
+            }
+        }
+    }
+
+    private fun tintEditTextDrawableStart() {
+        val context = activity.applicationContext
+
+        val personDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_assignment_ind_black_24dp, context)
+        val lockDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_lock_black_24dp, context)
+
+        val drawables = arrayOf(personDrawable, lockDrawable)
+        DrawableHelper.wrapDrawables(drawables)
+        DrawableHelper.tintDrawables(drawables, context, R.color.colorDrawableTintGrey)
+        DrawableHelper.compoundDrawables(arrayOf(text_username_or_email, text_password), drawables)
+    }
+
+    private fun setupEditTextListener() {
+        text_username_or_email.viewTreeObserver.addOnGlobalLayoutListener({
+            if (KeyboardHelper.isSoftKeyboardShown(text_username_or_email.rootView)) {
+                shouldShowOauthView(false)
+                shouldShowSignUpMsgView(false)
+                shouldShowLoginButton(true)
+            } else {
+                if (isEditTextNullOrBlank()) {
+                    shouldShowOauthView(true)
+                    shouldShowSignUpMsgView(true)
+                    shouldShowLoginButton(false)
+                }
+            }
+        })
+
+        text_password.viewTreeObserver.addOnGlobalLayoutListener({
+            if (KeyboardHelper.isSoftKeyboardShown(text_password.rootView)) {
+                shouldShowOauthView(false)
+                shouldShowSignUpMsgView(false)
+                shouldShowLoginButton(true)
+            } else {
+                if (isEditTextNullOrBlank()) {
+                    shouldShowOauthView(true)
+                    shouldShowSignUpMsgView(true)
+                    shouldShowLoginButton(false)
+                }
+            }
+        })
+    }
+
+    private fun shouldShowOauthView(show: Boolean) {
+        if (show) {
+            social_accounts_container.visibility = View.VISIBLE
+            button_fab.visibility = View.VISIBLE
+        } else {
+            social_accounts_container.visibility = View.GONE
+            button_fab.visibility = View.GONE
+        }
+    }
+
+    private fun shouldShowSignUpMsgView(show: Boolean) {
+        if (show) {
+            text_new_to_rocket_chat.visibility = View.VISIBLE
+        } else {
+            text_new_to_rocket_chat.visibility = View.GONE
+        }
+    }
+
+    private fun shouldShowLoginButton(show: Boolean) {
+        if (show) {
+            button_log_in.visibility = View.VISIBLE
+        } else {
+            button_log_in.visibility = View.GONE
+        }
+    }
+
+    private fun showLoginUsingFacebookImagebutton() {
+        button_facebook.visibility = View.VISIBLE
+    }
+
+    private fun showLoginUsingGithubImagebutton() {
+        button_github.visibility = View.VISIBLE
+    }
+
+    private fun showLoginUsingGoogleImagebutton() {
+        button_google.visibility = View.VISIBLE
+    }
+
+    private fun showLoginUsingLinkedinImagebutton() {
+        button_linkedin.visibility = View.VISIBLE
+    }
+
+    private fun showLoginUsingMeteorImagebutton() {
+        button_meteor.visibility = View.VISIBLE
+    }
+
+    private fun showLoginUsingTwitterImagebutton() {
+        button_twitter.visibility = View.VISIBLE
+    }
+
+    private fun showLoginUsingGitlabImagebutton() {
+        button_gitlab.visibility = View.VISIBLE
+    }
+
+    private fun setupFabListener() {
+        button_fab.setOnClickListener({
+            showLoginUsingLinkedinImagebutton()
+            showLoginUsingMeteorImagebutton()
+            showLoginUsingTwitterImagebutton()
+            showLoginUsingGitlabImagebutton()
+
+            scrollToBottom()
+            hideFab()
+        })
+    }
+
+    // Returns true if *all* EditText are null or blank.
+    private fun isEditTextNullOrBlank(): Boolean {
+        return text_username_or_email.text.isNullOrBlank() && text_password.text.isNullOrBlank()
+    }
+
+    private fun scrollToBottom() {
+        scroll_view.postDelayed({ scroll_view.fullScroll(ScrollView.FOCUS_DOWN); }, 1000)
+    }
+
+    private fun hideFab() {
+        button_fab.postDelayed({button_fab.hide() }, 1500)
+    }
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/app/AuthenticationServerFragment.kt

+package chat.rocket.android.app
+
+import android.app.Fragment
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.view.WindowManager
+import chat.rocket.android.R
+import kotlinx.android.synthetic.main.fragment_authentication_server.*
+
+/**
+ * @author Filipe de Lima Brito (filipedelimabrito@gmail.com)
+ */
+class AuthenticationServerFragment : Fragment() {
+
+    override fun onCreateView(inflater: LayoutInflater?, container: ViewGroup?, savedInstanceState: Bundle?): View? = inflater?.inflate(R.layout.fragment_authentication_server, container, false)
+
+    override fun onViewCreated(view: View?, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        text_server_url.setSelection(text_server_url.length())
+
+        activity.window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE)
+    }
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/app/AuthenticationSignUpFragment.kt

+package chat.rocket.android.app
+
+import DrawableHelper
+import android.app.Fragment
+import android.os.Build
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.view.WindowManager
+import chat.rocket.android.R
+import kotlinx.android.synthetic.main.fragment_authentication_sign_up.*
+
+/**
+ * @author Filipe de Lima Brito (filipedelimabrito@gmail.com)
+ */
+class AuthenticationSignUpFragment : Fragment() {
+
+    override fun onCreateView(inflater: LayoutInflater?, container: ViewGroup?, savedInstanceState: Bundle?): View? = inflater?.inflate(R.layout.fragment_authentication_sign_up, container, false)
+
+    override fun onViewCreated(view: View?, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        activity.window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE)
+
+        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.M) {
+            tintEditTextDrawableStart()
+        }
+    }
+
+    private fun tintEditTextDrawableStart() {
+        val context = activity.applicationContext
+
+        val personDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_person_black_24dp, context)
+        val atDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_at_black_24dp, context)
+        val lockDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_lock_black_24dp, context)
+        val emailDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_email_black_24dp, context)
+
+        val drawables = arrayOf(personDrawable, atDrawable, lockDrawable, emailDrawable)
+        DrawableHelper.wrapDrawables(drawables)
+        DrawableHelper.tintDrawables(drawables, context, R.color.colorDrawableTintGrey)
+        DrawableHelper.compoundDrawables(arrayOf(text_name, text_username, text_password, text_email), drawables)
+    }
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/app/AuthenticationTwoFAFragment.kt

+package chat.rocket.android.app
+
+import DrawableHelper
+import android.app.Fragment
+import android.os.Build
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.view.WindowManager
+import chat.rocket.android.R
+import kotlinx.android.synthetic.main.fragment_authentication_two_fa.*
+
+/**
+ * @author Filipe de Lima Brito (filipedelimabrito@gmail.com)
+ */
+class AuthenticationTwoFAFragment : Fragment() {
+
+    override fun onCreateView(inflater: LayoutInflater?, container: ViewGroup?, savedInstanceState: Bundle?): View? = inflater?.inflate(R.layout.fragment_authentication_two_fa, container, false)
+
+    override fun onViewCreated(view: View?, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        activity.window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE)
+
+        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.M) {
+            tintEditTextDrawableStart()
+        }
+    }
+
+    private fun tintEditTextDrawableStart() {
+        val context = activity.applicationContext
+
+        val lockDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_vpn_key_black_24dp, context)
+
+        DrawableHelper.wrapDrawable(lockDrawable)
+        DrawableHelper.tintDrawable(lockDrawable, context, R.color.colorDrawableTintGrey)
+        DrawableHelper.compoundDrawable(text_two_factor_auth, lockDrawable)
+    }
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/app/DrawableHelper.kt

+import android.content.Context
+import android.graphics.drawable.Drawable
+import android.support.v4.content.ContextCompat
+import android.support.v4.graphics.drawable.DrawableCompat
+import android.widget.EditText
+
+/**
+ * @author Filipe de Lima Brito (filipedelimabrito@gmail.com)
+ */
+object DrawableHelper {
+
+    /**
+     * Returns a Drawable from its ID.
+     *
+     * @param id The drawable ID.
+     * @param context The context.
+     * @return A drawable.
+     */
+    fun getDrawableFromId(id: Int, context: Context): Drawable = context.resources.getDrawable(id, null)
+
+    /**
+     * Wraps an array of Drawable to be used for example for tinting.
+     *
+     * @param drawables The array of Drawable to wrap.
+     * @see wrapDrawable
+     * @see tintDrawables
+     */
+    fun wrapDrawables(drawables: Array<Drawable>) {
+        for (drawable in drawables) {
+            DrawableCompat.wrap(drawable)
+        }
+    }
+
+    /**
+     * Wraps the Drawable to be used for example for tinting.
+     *
+     * @param drawable The Drawable to wrap.
+     * @see wrapDrawables
+     * @see tintDrawable
+     */
+    fun wrapDrawable(drawable: Drawable) = DrawableCompat.wrap(drawable)
+
+
+    /**
+     * Tints an array of Drawable.
+     *
+     * REMARK: you MUST always wrap the array of Drawable before tint it.
+     *
+     * @param drawables The array of Drawable to tint.
+     * @param context The context.
+     * @param resId The resource id color to tint the Drawables.
+     * @see tintDrawable
+     * @see wrapDrawables
+     */
+    fun tintDrawables(drawables: Array<Drawable>, context: Context, resId: Int) {
+        for (drawable in drawables) {
+            DrawableCompat.setTint(drawable, ContextCompat.getColor(context, resId))
+        }
+    }
+
+    /**
+     * Tints a Drawable.
+     *
+     * REMARK: you MUST always wrap the Drawable before tint it.
+     *
+     * @param drawable The Drawable to tint.
+     * @param context The context.
+     * @param resId The resource id color to tint the Drawable.
+     * @see tintDrawables
+     * @see wrapDrawable
+     */
+    fun tintDrawable(drawable: Drawable, context: Context, resId: Int) = DrawableCompat.setTint(drawable, ContextCompat.getColor(context, resId))
+
+    /**
+     * Compounds an array of Drawable (to appear to the left of the text) into an array of EditText.
+     *
+     * REMARK: the number of elements in both array of Drawable and EditText MUST be equal.
+     *
+     * @param editTexts The array of EditText.
+     * @param drawables The array of Drawable.
+     * @see compoundDrawable
+     */
+    fun compoundDrawables(editTexts: Array<EditText>, drawables: Array<Drawable>) {
+        if (editTexts.size != drawables.size) {
+            return
+        } else {
+            for (i in editTexts.indices) {
+                editTexts[i].setCompoundDrawablesWithIntrinsicBounds(drawables[i], null, null, null)
+            }
+        }
+    }
+
+    /**
+     * Compounds a Drawable (to appear to the left of the text) into an EditText.
+     *
+     * @param editText The EditText.
+     * @param drawable The Drawable.
+     * @see compoundDrawables
+     */
+    fun compoundDrawable(editText: EditText, drawable: Drawable) = editText.setCompoundDrawablesWithIntrinsicBounds(drawable, null, null, null)
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/app/KeyboardHelper.kt

+package chat.rocket.android.app
+
+import android.content.res.Configuration
+import android.graphics.Rect
+import android.view.View
+
+/**
+ * @author Filipe de Lima Brito (filipedelimabrito@gmail.com)
+ */
+object KeyboardHelper {
+
+    /**
+     * Returns true if the soft keyboard is shown, false otherwise.
+     *
+     * @param rootView The rootView of a view (e.g. an EditText).
+     * @return true if the soft keyboard is shown, false otherwise.
+     */
+    fun isSoftKeyboardShown(rootView: View): Boolean {
+        val softKeyboardHeight = 100
+        val rect = Rect()
+
+        rootView.getWindowVisibleDisplayFrame(rect)
+
+        val dm = rootView.resources.displayMetrics
+        val heightDiff = rootView.bottom - rect.bottom
+        return heightDiff > softKeyboardHeight * dm.density
+    }
+
+    /**
+     * Returns true if the hard keyboard is shown, false otherwise.
+     *
+     * @param newConfig The configuration.
+     * @return true if the hard keyboard is shown, false otherwise.
+     */
+    fun isHardKeyboardShown(newConfig: Configuration?): Boolean {
+        if (newConfig?.hardKeyboardHidden == Configuration.HARDKEYBOARDHIDDEN_NO) {
+            return true
+        }
+        return false
+    }
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/app/LayoutHelper.kt

+package chat.rocket.android.app
+
+import android.app.Activity
+import android.graphics.Rect
+import android.util.Log
+import android.view.View
+import android.widget.FrameLayout
+
+/**
+ * @author Filipe de Lima Brito (filipedelimabrito@gmail.com)
+ */
+//TODO: check if this code has memory leak.
+object LayoutHelper {
+    private lateinit var childOfContent: View
+    private var usableHeightPrevious: Int = 0
+    private lateinit var frameLayoutParams: FrameLayout.LayoutParams
+
+    /**
+     * Workaround to adjust the layout when in the full screen mode.
+     *
+     * The original author of this code is Joseph Johnson and you can see his answer here: https://stackoverflow.com/a/19494006/4744263
+     *
+     * Note that this function has some differences from the original, like using *frameLayoutParams.height = usableHeightNow* instead of
+     * *frameLayoutParams.height = usableHeightSansKeyboard* (RobertoAllende's comment - from the same link above).
+     *
+     * @param activity The Activity to adjust the layout.
+     */
+    fun androidBug5497Workaround(activity: Activity) {
+        try {
+            val content = activity.findViewById<View>(android.R.id.content) as FrameLayout
+            childOfContent = content.getChildAt(0)
+            childOfContent.viewTreeObserver.addOnGlobalLayoutListener({ resizeChildOfContent() })
+            frameLayoutParams = childOfContent.layoutParams as FrameLayout.LayoutParams
+        } catch (exception : ClassCastException) {
+            // TODO: are we using the android.util.Log for logging that type of errors?
+            Log.e("ERROR", exception.message)
+        }
+    }
+
+    private fun resizeChildOfContent() {
+        val usableHeightNow = computeUsableHeight()
+        if (usableHeightNow != usableHeightPrevious) {
+            val usableHeightSansKeyboard = childOfContent.rootView.height
+            val heightDifference = usableHeightSansKeyboard - usableHeightNow
+            if (heightDifference > usableHeightSansKeyboard / 4) {
+                // keyboard probably just became visible
+                frameLayoutParams.height = usableHeightSansKeyboard - heightDifference
+            } else {
+                // keyboard probably just became hidden
+                frameLayoutParams.height = usableHeightNow
+            }
+            childOfContent.requestLayout()
+            usableHeightPrevious = usableHeightNow
+        }
+    }
+
+    private fun computeUsableHeight(): Int {
+        val rect = Rect()
+        childOfContent.getWindowVisibleDisplayFrame(rect)
+        return rect.bottom - rect.top
+    }
+}
\ No newline at end of file

app/src/main/res/drawable/effect_ripple.xml

+<?xml version="1.0" encoding="utf-8"?>
+<ripple xmlns:android="http://schemas.android.com/apk/res/android"
+    android:color="@color/colorPrimary">
+
+    <item
+        android:id="@android:id/background"
+        android:drawable="@color/colorAccent" />
+
+</ripple>
\ No newline at end of file

app/src/main/res/drawable/ic_assignment_ind_black_24dp.xml

+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportHeight="24.0"
+    android:viewportWidth="24.0">
+
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M19,3h-4.18C14.4,1.84 13.3,1 12,1c-1.3,0 -2.4,0.84 -2.82,2L5,3c-1.1,0 -2,0.9 -2,2v14c0,1.1 0.9,2 2,2h14c1.1,0 2,-0.9 2,-2L21,5c0,-1.1 -0.9,-2 -2,-2zM12,3c0.55,0 1,0.45 1,1s-0.45,1 -1,1 -1,-0.45 -1,-1 0.45,-1 1,-1zM12,7c1.66,0 3,1.34 3,3s-1.34,3 -3,3 -3,-1.34 -3,-3 1.34,-3 3,-3zM18,19L6,19v-1.4c0,-2 4,-3.1 6,-3.1s6,1.1 6,3.1L18,19z" />
+</vector>
\ No newline at end of file

app/src/main/res/drawable/ic_at_black_24dp.xml

+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportHeight="24.0"
+    android:viewportWidth="24.0">
+
+    <path
+        android:fillColor="#FF000000"
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app/src/main/res/drawable/ic_email_black_24dp.xml

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app/src/main/res/drawable/ic_github.xml

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app/src/main/res/drawable/ic_gitlab.xml

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app/src/main/res/drawable/ic_google.xml

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app/src/main/res/drawable/ic_linkedin.xml

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app/src/main/res/drawable/ic_lock_black_24dp.xml

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app/src/main/res/drawable/ic_meteor.xml

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app/src/main/res/drawable/ic_person_black_24dp.xml

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app/src/main/res/drawable/ic_twitter.xml

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app/src/main/res/drawable/ic_vpn_key_black_24dp.xml

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+    android:height="24dp"
+    android:viewportHeight="24.0"
+    android:viewportWidth="24.0">
+
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M12.65,10C11.83,7.67 9.61,6 7,6c-3.31,0 -6,2.69 -6,6s2.69,6 6,6c2.61,0 4.83,-1.67 5.65,-4H17v4h4v-4h2v-4H12.65zM7,14c-1.1,0 -2,-0.9 -2,-2s0.9,-2 2,-2 2,0.9 2,2 -0.9,2 -2,2z" />
+</vector>
\ No newline at end of file

app/src/main/res/drawable/style_edit_text.xml

+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+
+    <solid
+        android:color="@color/colorPrimaryDark" />
+
+    <corners
+        android:radius="2dp" />
+
+</shape>
\ No newline at end of file

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

+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:theme="@style/AuthenticationTheme">
+
+    <FrameLayout
+        android:id="@+id/fragment_container"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+</LinearLayout>
\ No newline at end of file

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

+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView 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:id="@+id/scroll_view"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:animateLayoutChanges="true"
+    android:fillViewport="true">
+
+    <android.support.constraint.ConstraintLayout
+        android:id="@+id/container"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <TextView
+            android:id="@+id/text_headline"
+            style="@style/HeadlineTextView"
+            android:text="@string/title_log_in"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <EditText
+            android:id="@+id/text_username_or_email"
+            style="@style/AuthenticationEditText"
+            android:layout_marginTop="32dp"
+            android:drawableStart="@drawable/ic_assignment_ind_black_24dp"
+            android:hint="@string/msg_username_or_email"
+            android:imeOptions="actionNext"
+            android:inputType="textEmailAddress|text"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/text_headline" />
+
+        <EditText
+            android:id="@+id/text_password"
+            style="@style/AuthenticationEditText"
+            android:layout_marginTop="16dp"
+            android:drawableStart="@drawable/ic_lock_black_24dp"
+            android:hint="@string/msg_password"
+            android:imeOptions="actionDone"
+            android:inputType="textPassword"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/text_username_or_email" />
+
+        <LinearLayout
+            android:id="@+id/social_accounts_container"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginEnd="@dimen/screen_edge_left_and_right_margins"
+            android:layout_marginStart="@dimen/screen_edge_left_and_right_margins"
+            android:layout_marginTop="16dp"
+            android:animateLayoutChanges="true"
+            android:background="@color/colorPrimaryDark"
+            android:gravity="center"
+            android:orientation="vertical"
+            android:paddingBottom="32dp"
+            android:paddingTop="@dimen/screen_edge_left_and_right_margins"
+            android:visibility="gone"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/text_password"
+            tools:visibility="visible">
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center"
+                android:text="@string/msg_or_continue_using_social_accounts" />
+
+            <ImageButton
+                android:id="@+id/button_facebook"
+                android:layout_width="290dp"
+                android:layout_height="40dp"
+                android:layout_marginTop="16dp"
+                android:contentDescription="@string/msg_content_description_log_in_using_facebook"
+                android:foreground="?android:attr/selectableItemBackgroundBorderless"
+                android:src="@drawable/ic_facebook"
+                android:visibility="gone"
+                tools:visibility="visible" />
+
+            <ImageButton
+                android:id="@+id/button_github"
+                android:layout_width="290dp"
+                android:layout_height="40dp"
+                android:layout_marginTop="16dp"
+                android:contentDescription="@string/msg_content_description_log_in_using_github"
+                android:foreground="?android:attr/selectableItemBackgroundBorderless"
+                android:src="@drawable/ic_github"
+                android:visibility="gone"
+                tools:visibility="visible" />
+
+            <ImageButton
+                android:id="@+id/button_google"
+                android:layout_width="290dp"
+                android:layout_height="40dp"
+                android:layout_marginTop="16dp"
+                android:contentDescription="@string/msg_content_description_log_in_using_google"
+                android:foreground="?android:attr/selectableItemBackground"
+                android:src="@drawable/ic_google"
+                android:visibility="gone"
+                tools:visibility="visible" />
+
+            <ImageButton
+                android:id="@+id/button_linkedin"
+                android:layout_width="290dp"
+                android:layout_height="40dp"
+                android:layout_marginTop="16dp"
+                android:contentDescription="@string/msg_content_description_log_in_using_linkedin"
+                android:foreground="?android:attr/selectableItemBackgroundBorderless"
+                android:src="@drawable/ic_linkedin"
+                android:visibility="gone"
+                tools:visibility="gone" />
+
+            <ImageButton
+                android:id="@+id/button_meteor"
+                android:layout_width="290dp"
+                android:layout_height="40dp"
+                android:layout_marginTop="16dp"
+                android:contentDescription="@string/msg_content_description_log_in_using_meteor"
+                android:foreground="?android:attr/selectableItemBackgroundBorderless"
+                android:src="@drawable/ic_meteor"
+                android:visibility="gone"
+                tools:visibility="gone" />
+
+            <ImageButton
+                android:id="@+id/button_twitter"
+                android:layout_width="290dp"
+                android:layout_height="40dp"
+                android:layout_marginTop="16dp"
+                android:contentDescription="@string/msg_content_description_log_in_using_twitter"
+                android:foreground="?android:attr/selectableItemBackgroundBorderless"
+                android:src="@drawable/ic_twitter"
+                android:visibility="gone"
+                tools:visibility="gone" />
+
+            <ImageButton
+                android:id="@+id/button_gitlab"
+                android:layout_width="290dp"
+                android:layout_height="40dp"
+                android:layout_marginTop="16dp"
+                android:contentDescription="@string/msg_content_description_log_in_using_gitlab"
+                android:foreground="?android:attr/selectableItemBackgroundBorderless"
+                android:src="@drawable/ic_gitlab"
+                android:visibility="gone"
+                tools:visibility="gone" />
+        </LinearLayout>
+
+        <android.support.design.widget.FloatingActionButton
+            android:id="@+id/button_fab"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:src="@drawable/ic_expand_more_black_24dp"
+            android:theme="@style/Theme.AppCompat"
+            android:tint="@color/white"
+            android:visibility="gone"
+            app:backgroundTint="@color/colorAccent"
+            app:elevation="@dimen/fab_elevation"
+            app:fabSize="mini"
+            app:layout_constraintBottom_toBottomOf="@+id/social_accounts_container"
+            app:layout_constraintLeft_toLeftOf="@+id/social_accounts_container"
+            app:layout_constraintRight_toRightOf="@+id/social_accounts_container"
+            app:layout_constraintTop_toBottomOf="@+id/social_accounts_container"
+            tools:visibility="visible" />
+
+        <TextView
+            android:id="@+id/text_new_to_rocket_chat"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="16dp"
+            android:layout_marginEnd="@dimen/screen_edge_left_and_right_margins"
+            android:layout_marginStart="@dimen/screen_edge_left_and_right_margins"
+            android:layout_marginTop="16dp"
+            android:gravity="center"
+            android:text="@string/msg_new_to_rocket_chat"
+            android:visibility="gone"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/social_accounts_container"
+            tools:visibility="visible" />
+
+        <Button
+            android:id="@+id/button_log_in"
+            style="@style/AuthenticationButton"
+            android:text="@string/title_log_in"
+            android:visibility="visible"
+            app:layout_constraintBottom_toBottomOf="parent"
+            tools:visibility="gone" />
+    </android.support.constraint.ConstraintLayout>
+</ScrollView>

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

+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <TextView
+        android:id="@+id/text_headline"
+        style="@style/HeadlineTextView"
+        android:layout_centerHorizontal="true"
+        android:text="@string/title_sign_in_your_server" />
+
+    <EditText
+        android:id="@+id/text_server_url"
+        style="@style/AuthenticationEditText"
+        android:layout_below="@id/text_headline"
+        android:layout_marginTop="32dp"
+        android:imeOptions="actionDone"
+        android:inputType="textUri"
+        android:text="@string/msg_https" />
+
+    <Button
+        android:id="@+id/button_connect"
+        style="@style/AuthenticationButton"
+        android:layout_alignParentBottom="true"
+        android:text="@string/action_connect" />
+
+</RelativeLayout>
\ No newline at end of file

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

+<?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"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <TextView
+        android:id="@+id/text_headline"
+        style="@style/HeadlineTextView"
+        android:text="@string/title_sign_up"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <EditText
+        android:id="@+id/text_name"
+        style="@style/AuthenticationEditText"
+        android:layout_marginTop="32dp"
+        android:drawableStart="@drawable/ic_person_black_24dp"
+        android:hint="@string/msg_name_and_surname"
+        android:imeOptions="actionNext"
+        android:inputType="textCapWords"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/text_headline" />
+
+    <EditText
+        android:id="@+id/text_username"
+        style="@style/AuthenticationEditText"
+        android:layout_marginTop="16dp"
+        android:drawableStart="@drawable/ic_at_black_24dp"
+        android:hint="@string/msg_username"
+        android:imeOptions="actionNext"
+        android:inputType="text"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/text_name" />
+
+    <EditText
+        android:id="@+id/text_password"
+        style="@style/AuthenticationEditText"
+        android:layout_marginTop="16dp"
+        android:drawableStart="@drawable/ic_lock_black_24dp"
+        android:hint="@string/msg_password"
+        android:imeOptions="actionNext"
+        android:inputType="textPassword"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/text_username" />
+
+    <EditText
+        android:id="@+id/text_email"
+        style="@style/AuthenticationEditText"
+        android:layout_marginTop="16dp"
+        android:drawableStart="@drawable/ic_email_black_24dp"
+        android:hint="@string/msg_email"
+        android:imeOptions="actionDone"
+        android:inputType="textEmailAddress"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/text_password" />
+
+    <TextView
+        android:id="@+id/text_new_user_agreement"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="16dp"
+        android:layout_marginEnd="@dimen/screen_edge_left_and_right_margins"
+        android:layout_marginStart="@dimen/screen_edge_left_and_right_margins"
+        android:gravity="center"
+        android:text="@string/msg_new_user_agreement"
+        app:layout_constraintBottom_toTopOf="@+id/button_sign_up"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent" />
+
+    <Button
+        android:id="@+id/button_sign_up"
+        style="@style/AuthenticationButton"
+        android:text="@string/title_sign_up"
+        app:layout_constraintBottom_toBottomOf="parent" />
+
+</android.support.constraint.ConstraintLayout>
\ No newline at end of file

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

+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <TextView
+        android:id="@+id/text_headline"
+        style="@style/HeadlineTextView"
+        android:layout_centerHorizontal="true"
+        android:text="@string/title_log_in" />
+
+    <EditText
+        android:id="@+id/text_two_factor_auth"
+        style="@style/AuthenticationEditText"
+        android:layout_below="@id/text_headline"
+        android:layout_marginTop="32dp"
+        android:drawableStart="@drawable/ic_vpn_key_black_24dp"
+        android:hint="@string/msg_2fa_code"
+        android:imeOptions="actionDone"
+        android:inputType="text" />
+
+    <Button
+        android:id="@+id/button_log_in"
+        style="@style/AuthenticationButton"
+        android:layout_alignParentBottom="true"
+        android:text="@string/title_log_in" />
+
+</RelativeLayout>
\ No newline at end of file

app/src/main/res/values-pt-rBR/strings.xml

+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <!-- Titles -->
+    <string name="title_sign_in_your_server">Faça login no seu servidor</string>
+    <string name="title_log_in">Entrar</string>
+    <string name="title_sign_up">Inscreva-se</string>
+
+    <!-- Actions -->
+    <string name="action_connect">Conectar</string>
+
+    <!-- Regular information messages -->
+    <string name="msg_username">nome de usuário</string>
+    <string name="msg_username_or_email">nome de usuário ou email</string>
+    <string name="msg_password">senha</string>
+    <string name="msg_name_and_surname">nome e sobrenome</string>
+    <string name="msg_email">email</string>
+    <string name="msg_or_continue_using_social_accounts">Ou continue através de contas sociais</string>
+    <string name="msg_new_to_rocket_chat">Novo no Rocket Chat? <font color='#FF1976D2'>Inscreva-se</font></string>
+    <string name="msg_new_user_agreement">Ao proceder você concorda com nossos\n<font color='#FF1976D2'>Termos de Serviço</font> e <font color='#FF1976D2'>Política de Privacidade</font></string>
+    <string name="msg_2fa_code">Código 2FA</string>
+    <string name="msg_content_description_log_in_using_facebook">Fazer login através do Facebook</string>
+    <string name="msg_content_description_log_in_using_github">Fazer login através do Github</string>
+    <string name="msg_content_description_log_in_using_google">Fazer login através do Google</string>
+    <string name="msg_content_description_log_in_using_linkedin">Fazer login através do Linkedin</string>
+    <string name="msg_content_description_log_in_using_meteor">Fazer login através do Meteor</string>
+    <string name="msg_content_description_log_in_using_twitter">Fazer login através do Twitter</string>
+    <string name="msg_content_description_log_in_using_gitlab">Fazer login através do Gitlab</string>
+
+</resources>

app/src/main/res/values-v23/styles.xml

+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <style name="AuthenticationEditText" parent="Widget.AppCompat.EditText">
+        <item name="android:layout_width">match_parent</item>
+        <item name="android:layout_height">50dp</item>
+        <item name="android:layout_marginStart">@dimen/screen_edge_left_and_right_margins</item>
+        <item name="android:layout_marginEnd">@dimen/screen_edge_left_and_right_margins</item>
+        <item name="android:paddingStart">@dimen/edit_text_margin</item>
+        <item name="android:paddingEnd">@dimen/edit_text_margin</item>
+        <item name="android:maxLines">1</item>
+        <item name="android:drawablePadding">@dimen/edit_text_drawable_padding</item>
+        <item name="android:drawableTint">@color/colorDrawableTintGrey</item>
+        <item name="android:background">@drawable/style_edit_text</item>
+    </style>
+
+</resources>
\ No newline at end of file

app/src/main/res/values-w820dp/dimens.xml

+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <!-- Customization of dimensions originally defined in res/values/dimens.xml for screens with more than 820dp
+         of available width. This would include 7" and 10" devices in landscape (~960dp and ~1280dp respectively). -->
+
+    <!-- Default screen margins, per the Android Design guidelines. -->
+    <dimen name="screen_edge_left_and_right_margins">24dp</dimen>
+
+</resources>
\ No newline at end of file

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

 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <color name="colorPrimary">#3F51B5</color>
-    <color name="colorPrimaryDark">#303F9F</color>
-    <color name="colorAccent">#FF4081</color>
+    <color name="colorPrimary">#FF303030</color> <!-- Material Grey 850 -->
+    <color name="colorPrimaryDark">#ff212121</color> <!-- Material Grey 900 -->
+    <color name="colorAccent">#FF1976D2</color> <!-- Material Blue 700 -->
+
+    <color name="colorDrawableTintGrey">#9FA2A8</color>
+
+    <color name="white">#FFFFFFFF</color>
 </resources>
\ No newline at end of file

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

+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <!-- Default screen margins, per the Android Design guidelines. -->
+    <dimen name="screen_edge_left_and_right_margins">16dp</dimen>
+
+    <dimen name="edit_text_margin">10dp</dimen>
+    <dimen name="edit_text_drawable_padding">16dp</dimen>
+
+    <dimen name="fab_elevation">6dp</dimen>
+
+</resources>
\ No newline at end of file

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

 <resources>
-    <string name="app_name">Rocket Chat</string>
+    <string name="app_name" translatable="false">Rocket Chat</string>
+
+    <!-- Titles -->
+    <string name="title_sign_in_your_server">Sign in your server</string>
+    <string name="title_log_in">Log in</string>
+    <string name="title_sign_up">Sign up</string>
+
+    <!-- Actions -->
+    <string name="action_connect">Connect</string>
+
+    <!-- Regular information messages -->
+    <string name="msg_https" translatable="false">https://</string>
+    <string name="msg_username">username</string>
+    <string name="msg_username_or_email">username or email</string>
+    <string name="msg_password">password</string>
+    <string name="msg_name_and_surname">name and surname</string>
+    <string name="msg_email">email</string>
+    <string name="msg_or_continue_using_social_accounts">Or continue using social accounts</string>
+    <string name="msg_new_to_rocket_chat">New to Rocket Chat? <font color='#FF1976D2'>Sign up</font></string>
+    <string name="msg_new_user_agreement">By proceeding you are agreeing to our\n<font color='#FF1976D2'>Terms of Service</font> and <font color='#FF1976D2'>Privacy Policy</font></string>
+    <string name="msg_2fa_code">2FA Code</string>
+    <string name="msg_content_description_log_in_using_facebook">Login using Facebook</string>
+    <string name="msg_content_description_log_in_using_github">Login using Github</string>
+    <string name="msg_content_description_log_in_using_google">Login using Google</string>
+    <string name="msg_content_description_log_in_using_linkedin">Login using Linkedin</string>
+    <string name="msg_content_description_log_in_using_meteor">Login using Meteor</string>
+    <string name="msg_content_description_log_in_using_twitter">Login using Twitter</string>
+    <string name="msg_content_description_log_in_using_gitlab">Login using Gitlab</string>
+
 </resources>

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

 <resources>
 
     <!-- Base application theme. -->
-    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
+    <style name="AppTheme" parent="android:Theme.Material">
         <!-- Customize your theme here. -->
         <item name="colorPrimary">@color/colorPrimary</item>
         <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
         <item name="colorAccent">@color/colorAccent</item>
     </style>
 
+    <style name="AuthenticationTheme" parent="android:Theme.Material.NoActionBar.Fullscreen">
+        <item name="android:navigationBarColor">@color/colorPrimary</item>
+    </style>
+
+    <!-- Widget styles. -->
+    <style name="HeadlineTextView" parent="TextAppearance.AppCompat.Headline">
+        <item name="android:layout_width">wrap_content</item>
+        <item name="android:layout_height">wrap_content</item>
+        <item name="android:layout_marginTop">20dp</item>
+        <item name="android:layout_marginStart">@dimen/screen_edge_left_and_right_margins</item>
+        <item name="android:layout_marginEnd">@dimen/screen_edge_left_and_right_margins</item>
+    </style>
+
+    <style name="AuthenticationEditText" parent="Widget.AppCompat.EditText">
+        <item name="android:layout_width">match_parent</item>
+        <item name="android:layout_height">50dp</item>
+        <item name="android:layout_marginStart">@dimen/screen_edge_left_and_right_margins</item>
+        <item name="android:layout_marginEnd">@dimen/screen_edge_left_and_right_margins</item>
+        <item name="android:paddingStart">@dimen/edit_text_margin</item>
+        <item name="android:paddingEnd">@dimen/edit_text_margin</item>
+        <item name="android:maxLines">1</item>
+        <item name="android:drawablePadding">@dimen/edit_text_drawable_padding</item>
+        <item name="android:background">@drawable/style_edit_text</item>
+    </style>
+
+    <style name="AuthenticationButton" parent="Widget.AppCompat.Button">
+        <item name="android:layout_width">match_parent</item>
+        <item name="android:layout_height">wrap_content</item>
+        <item name="android:background">@drawable/effect_ripple</item>
+    </style>
+
 </resources>
\ No newline at end of file

circle.yml

@@ -24,8 +24,9 @@ dependencies:
     - echo $ROCKET_PLAY_JSON | base64 --decode > app/rocket-chat.json
 
     - mkdir -p app/src/release/res/values
-    - echo $GOOGLE_SERVICES_BASE64 | base64 --decode > app/src/release/google-services.json
-    - echo $API_KEY_STRINGS_BASE64 | base64 --decode > app/src/release/res/values/api_key_strings.xml
+# TODO: remove the comment when using that file on the project
+#    - echo $GOOGLE_SERVICES_BASE64 | base64 --decode > app/src/release/google-services.json
+#   - echo $API_KEY_STRINGS_BASE64 | base64 --decode > app/src/release/res/values/api_key_strings.xml
 
     - echo y | android update sdk --no-ui --all --filter tools,platform-tools
     - echo y | android update sdk --no-ui --all --filter android-27