Implemented autofill callbacks in kotlin autofill sample.

Disable AutoComplete in AutoCompleteTextView when AFF
is working.

Bug: 38182790
Test: manual
Change-Id: If6de507dc2acf2033f2930d8e1c2cae85903b9a5

5 files changed, 137 insertions, 11 deletions

diff --git a/input/autofill/AutofillFramework/kotlinApp/Application/src/main/java/com/example/android/autofillframework/app/CustomVirtualView.kt b/input/autofill/AutofillFramework/kotlinApp/Application/src/main/java/com/example/android/autofillframework/app/CustomVirtualView.kt
index bef16afe..b230db47 100644
--- a/input/autofill/AutofillFramework/kotlinApp/Application/src/main/java/com/example/android/autofillframework/app/CustomVirtualView.kt
+++ b/input/autofill/AutofillFramework/kotlinApp/Application/src/main/java/com/example/android/autofillframework/app/CustomVirtualView.kt
@@ -183,8 +183,8 @@ class CustomVirtualView(context: Context, attrs: AttributeSet) : View(context, a
     }
 
     private class Item internal constructor(val line: Line, val id: Int, val hints: Array<String>?,
-                                            val type: Int, var text: CharSequence,
-                                            val editable: Boolean, val sanitized: Boolean) {
+            val type: Int, var text: CharSequence,
+            val editable: Boolean, val sanitized: Boolean) {
         var focused = false
 
         override fun toString(): String {
@@ -199,7 +199,7 @@ class CustomVirtualView(context: Context, attrs: AttributeSet) : View(context, a
     }
 
     private inner class Line constructor(val idEntry: String, label: String, hints: Array<String>,
-                                         text: String, sanitized: Boolean) {
+            text: String, sanitized: Boolean) {
 
         // Boundaries of the text field, relative to the CustomView
         internal val bounds = Rect()
diff --git a/input/autofill/AutofillFramework/kotlinApp/Application/src/main/java/com/example/android/autofillframework/app/MainActivity.kt b/input/autofill/AutofillFramework/kotlinApp/Application/src/main/java/com/example/android/autofillframework/app/MainActivity.kt
index 1759de25..c7c458d4 100644
--- a/input/autofill/AutofillFramework/kotlinApp/Application/src/main/java/com/example/android/autofillframework/app/MainActivity.kt
+++ b/input/autofill/AutofillFramework/kotlinApp/Application/src/main/java/com/example/android/autofillframework/app/MainActivity.kt
@@ -19,6 +19,7 @@ import android.os.Bundle
 import android.support.v7.app.AppCompatActivity
 import com.example.android.autofillframework.R
 import kotlinx.android.synthetic.main.activity_main.creditCardCheckoutButton
+import kotlinx.android.synthetic.main.activity_main.standardLoginWithAutoCompleteButton
 import kotlinx.android.synthetic.main.activity_main.standardViewSignInButton
 import kotlinx.android.synthetic.main.activity_main.virtualViewSignInButton
 
@@ -33,6 +34,7 @@ class MainActivity : AppCompatActivity() {
         standardViewSignInButton.setOnClickListener { standardViewSignIn() }
         virtualViewSignInButton.setOnClickListener { virtualViewSignIn() }
         creditCardCheckoutButton.setOnClickListener { creditCardCheckout() }
+        standardLoginWithAutoCompleteButton.setOnClickListener { standardAutoCompleteSignIn() }
     }
 
     private fun creditCardCheckout() {
@@ -41,12 +43,17 @@ class MainActivity : AppCompatActivity() {
     }
 
     private fun standardViewSignIn() {
-        val intent = LoginActivity.getStartActivityIntent(this)
+        val intent = StandardSignInActivity.getStartActivityIntent(this)
+        startActivity(intent)
+    }
+
+    private fun standardAutoCompleteSignIn() {
+        val intent = StandardAutoCompleteSignInActivity.getStartActivityIntent(this)
         startActivity(intent)
     }
 
     private fun virtualViewSignIn() {
-        val intent = VirtualLoginActivity.getStartActivityIntent(this)
+        val intent = VirtualSignInActivity.getStartActivityIntent(this)
         startActivity(intent)
     }
 }
\ No newline at end of file
diff --git a/input/autofill/AutofillFramework/kotlinApp/Application/src/main/java/com/example/android/autofillframework/app/StandardAutoCompleteSignInActivity.kt b/input/autofill/AutofillFramework/kotlinApp/Application/src/main/java/com/example/android/autofillframework/app/StandardAutoCompleteSignInActivity.kt
new file mode 100644
index 00000000..21eb4d70
--- /dev/null
+++ b/input/autofill/AutofillFramework/kotlinApp/Application/src/main/java/com/example/android/autofillframework/app/StandardAutoCompleteSignInActivity.kt
@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.autofillframework.app
+
+import android.content.Context
+import android.content.Intent
+import android.os.Bundle
+import android.support.v7.app.AppCompatActivity
+import android.util.Log
+import android.view.View
+import android.view.autofill.AutofillManager
+import android.widget.ArrayAdapter
+import android.widget.AutoCompleteTextView
+import android.widget.Toast
+import com.example.android.autofillframework.CommonUtil.TAG
+import com.example.android.autofillframework.R
+import kotlinx.android.synthetic.main.login_with_autocomplete_activity.clear
+import kotlinx.android.synthetic.main.login_with_autocomplete_activity.login
+import kotlinx.android.synthetic.main.login_with_autocomplete_activity.passwordField
+import kotlinx.android.synthetic.main.login_with_autocomplete_activity.usernameField
+
+class StandardAutoCompleteSignInActivity : AppCompatActivity() {
+    private var mAutofillReceived = false
+    private var mAutofillCallback: AutofillManager.AutofillCallback? = null
+    private var mAutofillManager: AutofillManager? = null
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        setContentView(R.layout.login_with_autocomplete_activity)
+
+        login.setOnClickListener { submitLogin() }
+        clear.setOnClickListener { resetFields() }
+        mAutofillCallback = MyAutofillCallback()
+        mAutofillManager = getSystemService(AutofillManager::class.java)
+        val mockAutocompleteAdapter = ArrayAdapter.createFromResource(this, R.array.mock_autocomplete_sign_in_suggestions,
+                android.R.layout.simple_dropdown_item_1line)
+        usernameField.setAdapter(mockAutocompleteAdapter)
+    }
+
+    override fun onResume() {
+        super.onResume()
+        mAutofillManager?.registerCallback(mAutofillCallback)
+    }
+
+    override fun onPause() {
+        super.onPause()
+        mAutofillManager?.unregisterCallback(mAutofillCallback)
+    }
+
+    private fun resetFields() {
+        usernameField.setText("")
+        passwordField.setText("")
+    }
+
+    /**
+     * Emulates a login action.
+     */
+    private fun submitLogin() {
+        val username = usernameField.text.toString()
+        val password = passwordField.text.toString()
+        val valid = isValidCredentials(username, password)
+        if (valid) {
+            val intent = WelcomeActivity.getStartActivityIntent(this@StandardAutoCompleteSignInActivity)
+            startActivity(intent)
+            finish()
+        } else {
+            Toast.makeText(this, "Authentication failed.", Toast.LENGTH_SHORT).show()
+        }
+    }
+
+    /**
+     * Dummy implementation for demo purposes. A real service should use secure mechanisms to
+     * authenticate users.
+     */
+    fun isValidCredentials(username: String?, password: String?): Boolean {
+        return username != null && password != null && username == password
+    }
+
+    private inner class MyAutofillCallback : AutofillManager.AutofillCallback() {
+        override fun onAutofillEvent(view: View, event: Int) {
+            super.onAutofillEvent(view, event)
+            if (view is AutoCompleteTextView) {
+                when (event) {
+                    AutofillManager.AutofillCallback.EVENT_INPUT_UNAVAILABLE,
+                    AutofillManager.AutofillCallback.EVENT_INPUT_HIDDEN -> if (!mAutofillReceived) {
+                        view.showDropDown()
+                    }
+                    AutofillManager.AutofillCallback.EVENT_INPUT_SHOWN -> {
+                        mAutofillReceived = true
+                        view.setAdapter(null)
+                    }
+                    else -> Log.d(TAG, "Unexpected callback: " + event)
+                }
+            }
+        }
+    }
+
+    companion object {
+
+        fun getStartActivityIntent(context: Context): Intent {
+            val intent = Intent(context, StandardAutoCompleteSignInActivity::class.java)
+            return intent
+        }
+    }
+}
\ No newline at end of file
diff --git a/input/autofill/AutofillFramework/kotlinApp/Application/src/main/java/com/example/android/autofillframework/app/LoginActivity.kt b/input/autofill/AutofillFramework/kotlinApp/Application/src/main/java/com/example/android/autofillframework/app/StandardSignInActivity.kt
index 8bdc1c33..971bd167 100644
--- a/input/autofill/AutofillFramework/kotlinApp/Application/src/main/java/com/example/android/autofillframework/app/LoginActivity.kt
+++ b/input/autofill/AutofillFramework/kotlinApp/Application/src/main/java/com/example/android/autofillframework/app/StandardSignInActivity.kt
@@ -28,7 +28,7 @@ import kotlinx.android.synthetic.main.login_activity.passwordField
 import kotlinx.android.synthetic.main.login_activity.usernameField
 
 
-class LoginActivity : AppCompatActivity() {
+class StandardSignInActivity : AppCompatActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -50,7 +50,7 @@ class LoginActivity : AppCompatActivity() {
         val password = passwordField.text.toString()
         val valid = isValidCredentials(username, password)
         if (valid) {
-            val intent = WelcomeActivity.getStartActivityIntent(this@LoginActivity)
+            val intent = WelcomeActivity.getStartActivityIntent(this@StandardSignInActivity)
             startActivity(intent)
             finish()
         } else {
@@ -69,7 +69,7 @@ class LoginActivity : AppCompatActivity() {
     companion object {
 
         fun getStartActivityIntent(context: Context): Intent {
-            val intent = Intent(context, LoginActivity::class.java)
+            val intent = Intent(context, StandardSignInActivity::class.java)
             return intent
         }
     }
diff --git a/input/autofill/AutofillFramework/kotlinApp/Application/src/main/java/com/example/android/autofillframework/app/VirtualLoginActivity.kt b/input/autofill/AutofillFramework/kotlinApp/Application/src/main/java/com/example/android/autofillframework/app/VirtualSignInActivity.kt
index 52081afd..6d86da95 100644
--- a/input/autofill/AutofillFramework/kotlinApp/Application/src/main/java/com/example/android/autofillframework/app/VirtualLoginActivity.kt
+++ b/input/autofill/AutofillFramework/kotlinApp/Application/src/main/java/com/example/android/autofillframework/app/VirtualSignInActivity.kt
@@ -26,7 +26,7 @@ import kotlinx.android.synthetic.main.virtual_login_activity.custom_view
 import kotlinx.android.synthetic.main.virtual_login_activity.login
 
 
-class VirtualLoginActivity : AppCompatActivity() {
+class VirtualSignInActivity : AppCompatActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -49,7 +49,7 @@ class VirtualLoginActivity : AppCompatActivity() {
         val password = custom_view.passwordText.toString()
         val valid = isValidCredentials(username, password)
         if (valid) {
-            val intent = WelcomeActivity.getStartActivityIntent(this@VirtualLoginActivity)
+            val intent = WelcomeActivity.getStartActivityIntent(this@VirtualSignInActivity)
             startActivity(intent)
             finish()
         } else {
@@ -68,7 +68,7 @@ class VirtualLoginActivity : AppCompatActivity() {
     companion object {
 
         fun getStartActivityIntent(context: Context): Intent {
-            val intent = Intent(context, VirtualLoginActivity::class.java)
+            val intent = Intent(context, VirtualSignInActivity::class.java)
             return intent
         }
     }