Add faster emergency dialer UI

If flag "faster_emergency_phone_call_enabled" is true, EmergencyDialer
will display emergency dialer shortcuts UI. Otherwise, EmergencyDialer
display original dialer UI.
Faster emergency dialer implement the part of user's Emergency
Infomation, and a button which is used to show dialpad.

Test: Manually
Bug: 80406570
Change-Id: I3637dab0059d6fa87417bb282163ebff04eae71d
Merged-In: I3637dab0059d6fa87417bb282163ebff04eae71d
diff --git a/src/com/android/phone/EmergencyInfoGroup.java b/src/com/android/phone/EmergencyInfoGroup.java
new file mode 100644
index 0000000..8100a5a
--- /dev/null
+++ b/src/com/android/phone/EmergencyInfoGroup.java
@@ -0,0 +1,126 @@
+/*
+ * Copyright (C) 2018 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.android.phone;
+
+import android.annotation.Nullable;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.ResolveInfo;
+import android.graphics.Bitmap;
+import android.graphics.drawable.Drawable;
+import android.os.UserHandle;
+import android.os.UserManager;
+import android.telephony.TelephonyManager;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+
+import androidx.core.graphics.drawable.RoundedBitmapDrawable;
+import androidx.core.graphics.drawable.RoundedBitmapDrawableFactory;
+
+import com.android.internal.util.UserIcons;
+
+import java.util.List;
+
+/**
+ * EmergencyInfoGroup display user icon and user name. And it is an entry point to
+ * Emergency Information.
+ */
+public class EmergencyInfoGroup extends LinearLayout {
+
+    private ImageView mEmergencyInfoImage;
+    private TextView mEmergencyInfoName;
+    private View mEmergencyInfoTitle;
+    private View mEmergencyInfoButton;
+
+    public EmergencyInfoGroup(Context context, @Nullable AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    protected void onFinishInflate() {
+        super.onFinishInflate();
+        mEmergencyInfoTitle = findViewById(R.id.emergency_info_title);
+        mEmergencyInfoButton = findViewById(R.id.emergency_info_button);
+        mEmergencyInfoImage = (ImageView) findViewById(R.id.emergency_info_image);
+        mEmergencyInfoName = (TextView) findViewById(R.id.emergency_info_name);
+    }
+
+    @Override
+    protected void onWindowVisibilityChanged(int visibility) {
+        super.onWindowVisibilityChanged(visibility);
+        if (visibility == View.VISIBLE) {
+            setupButtonInfo();
+        }
+    }
+
+    private void setupButtonInfo() {
+        List<ResolveInfo> infos;
+
+        if (TelephonyManager.EMERGENCY_ASSISTANCE_ENABLED) {
+            infos = EmergencyAssistanceHelper.resolveAssistPackageAndQueryActivities(getContext());
+        } else {
+            infos = null;
+        }
+
+        boolean visible = false;
+
+        if (infos != null && infos.size() > 0) {
+            final String packageName = infos.get(0).activityInfo.packageName;
+            final Intent intent = new Intent(TelephonyManager.ACTION_EMERGENCY_ASSISTANCE)
+                    .setPackage(packageName);
+            mEmergencyInfoButton.setTag(R.id.tag_intent, intent);
+            mEmergencyInfoImage.setImageDrawable(getCircularUserIcon());
+
+            /* TODO: Get user name.
+                if user name exist:
+                    1. mEmergencyInfoTitle show title.
+                    2. mEmergencyInfoName show user name.
+                if user name does not exist:
+                    1. mEmergencyInfoTitle hide.
+                    2. mEmergencyInfoName show app label. */
+            mEmergencyInfoTitle.setVisibility(View.INVISIBLE);
+            mEmergencyInfoName.setText(getContext().getResources().getString(
+                    R.string.emergency_information_title));
+
+            visible = true;
+        }
+
+        setVisibility(visible ? View.VISIBLE : View.GONE);
+    }
+
+    private Drawable getCircularUserIcon() {
+        final UserManager userManager = (UserManager) getContext().getSystemService(
+                Context.USER_SERVICE);
+        Bitmap bitmapUserIcon = userManager.getUserIcon(UserHandle.getCallingUserId());
+
+        if (bitmapUserIcon == null) {
+            // get default user icon.
+            final Drawable defaultUserIcon = UserIcons.getDefaultUserIcon(
+                    getContext().getResources(), UserHandle.getCallingUserId(), false);
+            bitmapUserIcon = UserIcons.convertToBitmap(defaultUserIcon);
+        }
+
+        RoundedBitmapDrawable drawableUserIcon = RoundedBitmapDrawableFactory.create(
+                getContext().getResources(), bitmapUserIcon);
+        drawableUserIcon.setCircular(true);
+
+        return drawableUserIcon;
+    }
+}