Handle NO_DIALPAD UX restriction

Add a flag "config_no_dialpad_uxr_max_allow_digits" to control
the NO_DIALPAD UXR behavior:
* if the value is less than 0, ignore the restriction;
* if it is equal 0, entirely disable dialing, when NO_DIALPAD
restriction is enforced;
* allow dialing up to a given number of digits, when the restriction is
in effect;

If the app is configured to enforce the "no dialpad" restiction, disable
the dialpad on in-call screen.

Bug: 145596044
Test: manual
Change-Id: I240ba06fcba4dfef59ceeee788eaa9c574a27a44
(cherry picked from commit d02011a7632cb99ea88656a1634a16389b67a3f8)

7 files changed, 105 insertions, 1 deletions

diff --git a/res/drawable/restricted_dialing_mode_label_background.xml b/res/drawable/restricted_dialing_mode_label_background.xml
new file mode 100644
index 00000000..159babba
--- /dev/null
+++ b/res/drawable/restricted_dialing_mode_label_background.xml
@@ -0,0 +1,20 @@
+<!--
+  ~ Copyright (C) 2021 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.
+  -->
+
+<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
+    <corners android:radius="4dp"/>
+    <solid android:color="@color/emergency_text_color"/>
+</shape>
diff --git a/res/layout/dialpad_info.xml b/res/layout/dialpad_info.xml
index 25001c44..6849c7b6 100644
--- a/res/layout/dialpad_info.xml
+++ b/res/layout/dialpad_info.xml
@@ -72,4 +72,15 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintEnd_toEndOf="parent"/>
 
+    <include
+        layout="@layout/restricted_dialing_mode_label"
+        android:id="@+id/restricted_dialing_mode_label"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:layout_constraintTop_toBottomOf="@id/title"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        android:layout_marginTop="8dp"
+        android:visibility="invisible"/>
+
 </androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/res/layout/keypad_button.xml b/res/layout/keypad_button.xml
index b8a32ae1..d902ddd4 100644
--- a/res/layout/keypad_button.xml
+++ b/res/layout/keypad_button.xml
@@ -18,7 +18,9 @@ limitations under the License.
     android:orientation="vertical"
     android:layout_gravity="center"
     android:layout_width="@dimen/keypad_minimum_size"
-    android:layout_height="@dimen/keypad_minimum_size">
+    android:layout_height="@dimen/keypad_minimum_size"
+    android:stateListAnimator="@xml/keypad_button_state_animation"
+    android:duplicateParentState="true">
 
     <TextView
         android:id="@+id/keypad_number"
diff --git a/res/layout/restricted_dialing_mode_label.xml b/res/layout/restricted_dialing_mode_label.xml
new file mode 100644
index 00000000..189814fa
--- /dev/null
+++ b/res/layout/restricted_dialing_mode_label.xml
@@ -0,0 +1,27 @@
+<!--
+  ~ Copyright (C) 2021 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.
+  -->
+
+<TextView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/restricted_dialing_mode_label"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:layout_marginTop="8dp"
+    android:padding="8dp"
+    android:textAppearance="@style/TextAppearance.Body2"
+    android:text="@string/restricted_dialing_mode_label"
+    android:alpha="0.8"
+    android:background="@drawable/restricted_dialing_mode_label_background"/>
diff --git a/res/values/configs.xml b/res/values/configs.xml
index 9ea27bfd..af8bef40 100644
--- a/res/values/configs.xml
+++ b/res/values/configs.xml
@@ -66,4 +66,9 @@
     <!-- A config determines whether to show user profile for input number only when type down is
     not showing. This config works only when config_show_type_down_list_on_dialpad is false. -->
     <bool name="config_show_detailed_user_profile_on_dialpad">false</bool>
+
+    <!-- Maximum allowed digits to dial, when "no dialpad" UXR restriction is enforced. If
+     the parameter is set to "0", the dialing is restricted entirely, when the restriction is
+     in effect. "-1" or any other negative value means "ignore no dialpad" restriction. -->
+    <integer name="config_no_dialpad_uxr_max_allow_digits">-1</integer>
 </resources>
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 086d0847..ad9e3ce5 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -246,4 +246,9 @@
     <string name="ongoing_conf_title">Conference</string>
     <string name="ongoing_conf_title_format">%1$s (%2$d) -\u0020</string>
 
+    <!-- Dialing disabled warning [CHAR LIMIT=40] -->
+    <string name="dialing_disabled_warning">Dialing disabled</string>
+    <!-- Restricted dialing mode description -->
+    <string name="restricted_dialing_mode_label">Dialpad usage is restricted while driving</string>
+
 </resources>
diff --git a/res/xml/keypad_button_state_animation.xml b/res/xml/keypad_button_state_animation.xml
new file mode 100644
index 00000000..a04b29ea
--- /dev/null
+++ b/res/xml/keypad_button_state_animation.xml
@@ -0,0 +1,34 @@
+<!--
+  ~ Copyright (C) 2021 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.
+  -->
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_enabled="false">
+        <set>
+            <objectAnimator android:propertyName="alpha"
+                android:duration="@android:integer/config_shortAnimTime"
+                android:valueTo="?android:attr/disabledAlpha"
+                android:valueType="floatType"/>
+        </set>
+    </item>
+    <item>
+        <set>
+            <objectAnimator android:propertyName="alpha"
+                android:duration="@android:integer/config_shortAnimTime"
+                android:valueTo="1"
+                android:valueType="floatType"/>
+        </set>
+    </item>
+</selector>