Allow user to specify whether a new network is shared or private

* Add a check box to the WiFi configuration dialog that lets the user
  choose whether a newly created configuration is shared with other
  users (defaults to true)
* Disable the check box when modifying an existing network

BUG=25600871

Change-Id: Ifc6713602ee61b0407e55f45097c1b311fa19cb4

res/layout/wifi_dialog.xml

@@ -502,6 +502,24 @@
                             android:inputType="textNoSuggestions" />
                 </LinearLayout>
             </LinearLayout>
+
+            <LinearLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    style="@style/wifi_section">
+                <LinearLayout
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content"
+                        style="@style/wifi_item" >
+                    <CheckBox android:id="@+id/shared"
+                            android:layout_width="match_parent"
+                            android:layout_height="wrap_content"
+                            style="@style/wifi_item_content"
+                            android:textSize="14sp"
+                            android:text="@string/wifi_shared"
+                            android:checked="true" />
+                </LinearLayout>
+            </LinearLayout>
         </LinearLayout>
     </LinearLayout>
 </ScrollView>

res/values/strings.xml

@@ -1624,6 +1624,8 @@
     <string name="wifi_ap_choose_5G">5 GHz Band</string>
     <!-- Label for the spinner to show ip settings [CHAR LIMIT=25] -->
     <string name="wifi_ip_settings">IP settings</string>
+    <!-- Label for the check box to share a network with other users on the same device -->
+    <string name="wifi_shared">Share with other device users</string>
     <!-- Hint for unchanged fields -->
     <string name="wifi_unchanged">(unchanged)</string>
     <!-- Hint for unspecified fields -->

src/com/android/settings/wifi/WifiConfigController.java

@@ -35,6 +35,7 @@ import android.net.wifi.WifiEnterpriseConfig.Eap;
 import android.net.wifi.WifiEnterpriseConfig.Phase2;
 import android.net.wifi.WifiInfo;
 import android.os.Handler;
+import android.os.UserManager;
 import android.security.Credentials;
 import android.security.KeyStore;
 import android.text.Editable;
@@ -138,6 +139,8 @@ public class WifiConfigController implements TextWatcher,
     private TextView mProxyExclusionListView;
     private TextView mProxyPacView;
 
+    private CheckBox mSharedCheckBox;
+
     private IpAssignment mIpAssignment = IpAssignment.UNASSIGNED;
     private ProxySettings mProxySettings = ProxySettings.UNASSIGNED;
     private ProxyInfo mHttpProxy = null;
@@ -179,6 +182,7 @@ public class WifiConfigController implements TextWatcher,
         mIpSettingsSpinner.setOnItemSelectedListener(this);
         mProxySettingsSpinner = (Spinner) mView.findViewById(R.id.proxy_settings);
         mProxySettingsSpinner.setOnItemSelectedListener(this);
+        mSharedCheckBox = (CheckBox) mView.findViewById(R.id.shared);
 
         if (mAccessPoint == null) { // new network
             mConfigUi.setTitle(R.string.wifi_add_network);
@@ -218,6 +222,10 @@ public class WifiConfigController implements TextWatcher,
                     mIpSettingsSpinner.setSelection(DHCP);
                 }
 
+                mSharedCheckBox.setEnabled(config.shared);
+                if (!config.shared) {
+                    showAdvancedFields = true;
+                }
 
                 if (config.getProxySettings() == ProxySettings.STATIC) {
                     mProxySettingsSpinner.setSelection(PROXY_STATIC);
@@ -308,6 +316,12 @@ public class WifiConfigController implements TextWatcher,
             }
         }
 
+        final UserManager userManager =
+                (UserManager) mContext.getSystemService(Context.USER_SERVICE);
+        if (!userManager.isSplitSystemUser()) {
+            mSharedCheckBox.setVisibility(View.GONE);
+        }
+
         mConfigUi.setCancelButton(res.getString(R.string.wifi_cancel));
         if (mConfigUi.getSubmitButton() != null) {
             enableSubmitIfAppropriate();
@@ -393,6 +407,8 @@ public class WifiConfigController implements TextWatcher,
             config.networkId = mAccessPoint.getConfig().networkId;
         }
 
+        config.shared = mSharedCheckBox.isChecked();
+
         switch (mAccessPointSecurity) {
             case AccessPoint.SECURITY_NONE:
                 config.allowedKeyManagement.set(KeyMgmt.NONE);