Add default Dialer preference to Settings

Add a Default phone app setting under wireless settings, and also
a dialog activity that allows a user to confirm the selection of an
application as a default phone app.

Bug: 6948882
Bug: 15021725
Change-Id: I2c1473feba20da01b14fbd30dbecc01be560479d
diff --git a/src/com/android/settings/WirelessSettings.java b/src/com/android/settings/WirelessSettings.java
index 507445f..17234e9 100644
--- a/src/com/android/settings/WirelessSettings.java
+++ b/src/com/android/settings/WirelessSettings.java
@@ -41,6 +41,7 @@
 import android.preference.PreferenceScreen;
 import android.provider.SearchIndexableResource;
 import android.provider.Settings;
+import android.telecomm.PhoneApplication;
 import android.telephony.TelephonyManager;
 import android.text.TextUtils;
 import android.util.Log;
@@ -74,6 +75,7 @@
     private static final String KEY_SMS_APPLICATION = "sms_application";
     private static final String KEY_TOGGLE_NSD = "toggle_nsd"; //network service discovery
     private static final String KEY_CELL_BROADCAST_SETTINGS = "cell_broadcast_settings";
+    private static final String KEY_PHONE_APPLICATION = "phone_application";
 
     public static final String EXIT_ECM_RESULT = "exit_ecm_result";
     public static final int REQUEST_CODE_EXIT_ECM = 1;
@@ -93,6 +95,7 @@
     private static final String SAVED_MANAGE_MOBILE_PLAN_MSG = "mManageMobilePlanMessage";
 
     private AppListPreference mSmsApplicationPreference;
+    private AppListPreference mDialerApplicationPreference;
 
     public WirelessSettings() {
         super(null);
@@ -202,6 +205,24 @@
         mSmsApplicationPreference.setPackageNames(packageNames, defaultPackageName);
     }
 
+    private void initDialerApplicationSetting() {
+        log("initDialerApplicationSetting:");
+        final List<ComponentName> dialers =
+                PhoneApplication.getInstalledPhoneApplications(getActivity());
+
+        final int count = dialers.size();
+        final String[] packageNames = new String[count];
+        for (int i = 0; i < count; i++) {
+            packageNames[i] = dialers.get(i).getPackageName();
+        }
+        String defaultPackageName = null;
+        final ComponentName appName = PhoneApplication.getDefaultPhoneApplication(getActivity());
+        if (appName != null) {
+            defaultPackageName = appName.getPackageName();
+        }
+        mDialerApplicationPreference.setPackageNames(packageNames, defaultPackageName);
+    }
+
     @Override
     public Dialog onCreateDialog(int dialogId) {
         log("onCreateDialog: dialogId=" + dialogId);
@@ -242,6 +263,10 @@
         return mTm.isSmsCapable();
     }
 
+    private boolean isVoiceCapable() {
+        return mTm.isVoiceCapable();
+    }
+
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -272,6 +297,10 @@
         mSmsApplicationPreference.setOnPreferenceChangeListener(this);
         initSmsApplicationSetting();
 
+        mDialerApplicationPreference = (AppListPreference) findPreference(KEY_PHONE_APPLICATION);
+        mDialerApplicationPreference.setOnPreferenceChangeListener(this);
+        initDialerApplicationSetting();
+
         // Remove NSD checkbox by default
         getPreferenceScreen().removePreference(nsd);
         //mNsdEnabler = new NsdEnabler(activity, nsd);
@@ -346,6 +375,11 @@
             removePreference(KEY_SMS_APPLICATION);
         }
 
+        // Remove Dialer setting if the device does not support voice
+        if (!isVoiceCapable()) {
+            removePreference(KEY_PHONE_APPLICATION);
+        }
+
         // Remove Airplane Mode settings if it's a stationary device such as a TV.
         if (mPm.hasSystemFeature(PackageManager.FEATURE_TELEVISION)) {
             removePreference(KEY_TOGGLE_AIRPLANE);
@@ -454,6 +488,9 @@
         if (preference == mSmsApplicationPreference && newValue != null) {
             SmsApplication.setDefaultApplication(newValue.toString(), getActivity());
             return true;
+        } else if (preference == mDialerApplicationPreference && newValue != null) {
+            PhoneApplication.setDefaultPhoneApplication(newValue.toString(), getActivity());
+            return true;
         }
         return false;
     }
@@ -513,12 +550,17 @@
                 }
 
                 // Remove SMS Application if the device does not support SMS
-                TelephonyManager tm =
+                final TelephonyManager tm =
                         (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
                 if (!tm.isSmsCapable()) {
                     result.add(KEY_SMS_APPLICATION);
                 }
 
+                // Remove Phone Application if the device is not voice capable
+                if (!tm.isVoiceCapable()) {
+                    result.add(KEY_PHONE_APPLICATION);
+                }
+
                 final PackageManager pm = context.getPackageManager();
 
                 // Remove Airplane Mode settings if it's a stationary device such as a TV.
@@ -530,8 +572,8 @@
                 result.add(KEY_PROXY_SETTINGS);
 
                 // Disable Tethering if it's not allowed or if it's a wifi-only device
-                ConnectivityManager cm =
-                        (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
+                final ConnectivityManager cm = (ConnectivityManager) context.getSystemService(
+                        Context.CONNECTIVITY_SERVICE);
                 if (isSecondaryUser || !cm.isTetheringSupported()) {
                     result.add(KEY_TETHER_SETTINGS);
                 }