Use GoogleSetting to override DRP setting if available

Bug: 12492817

The developer setting will be deprecated and eventually will be
removed after the setting is moved to its new location.
This is the prep work for it.

Change-Id: If0b019b33a544b7d2e659161685fa33ca052f612

1 files changed, 72 insertions, 3 deletions

diff --git a/src/com/android/settings/DevelopmentSettings.java b/src/com/android/settings/DevelopmentSettings.java
index 11dc3c6..76e80e6 100644
--- a/src/com/android/settings/DevelopmentSettings.java
+++ b/src/com/android/settings/DevelopmentSettings.java
@@ -31,7 +31,9 @@ import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.PackageManager.NameNotFoundException;
 import android.content.pm.ResolveInfo;
+import android.database.Cursor;
 import android.hardware.usb.IUsbManager;
+import android.net.Uri;
 import android.net.wifi.WifiManager;
 import android.os.AsyncTask;
 import android.os.BatteryManager;
@@ -152,6 +154,9 @@ public class DevelopmentSettings extends SettingsPreferenceFragment
     private static final String SHOW_ALL_ANRS_KEY = "show_all_anrs";
 
     private static final String WEBVIEW_DATA_REDUCTION_PROXY_KEY = "webview_data_reduction_proxy";
+    // GoogleSetting name for the data reduction proxy setting.
+    // Setting type: int ( 0 = disallow, 1 = allow )
+    private static final String WEBVIEW_DATA_REDUCTION_PROXY = "use_webview_data_reduction_proxy";
 
     private static final String PROCESS_STATS = "proc_stats";
 
@@ -165,6 +170,11 @@ public class DevelopmentSettings extends SettingsPreferenceFragment
 
     private static final String PERSISTENT_DATA_BLOCK_PROP = "ro.frp.pst";
 
+    // The setting Uri. Used when querying GoogleSettings.
+    private static final Uri GOOGLE_SETTINGS_CONTENT_URI = Uri.parse("content://com.google.settings/partner");
+    private static final String GOOGLE_SETTINGS_COMPONENT = "com.google.android.gms";
+    private static final String GOOGLE_SETTINGS_ACTIVITY = ".app.settings.GoogleSettingsActivity";
+
     private static String DEFAULT_LOG_RING_BUFFER_SIZE_IN_BYTES = "262144"; // 256K
 
     private IWindowManager mWindowManager;
@@ -369,6 +379,13 @@ public class DevelopmentSettings extends SettingsPreferenceFragment
         mAllPrefs.add(mProcessStats);
 
         mWebViewDataReductionProxy = findAndInitCheckboxPref(WEBVIEW_DATA_REDUCTION_PROXY_KEY);
+        mWebViewDataReductionProxy.setOnPreferenceChangeListener(
+                new Preference.OnPreferenceChangeListener() {
+                    @Override
+                    public boolean onPreferenceChange(Preference preference, Object newValue) {
+                        return handleDataReductionProxyPreferenceChange();
+                    }
+                });
     }
 
     private ListPreference addListPreference(String prefKey) {
@@ -1272,6 +1289,50 @@ public class DevelopmentSettings extends SettingsPreferenceFragment
             getActivity().getContentResolver(), Settings.Secure.ANR_SHOW_BACKGROUND, 0) != 0);
     }
 
+    // Reads the googlesetting and converts to an int. Throws an exception if GoogleSettings
+    // provider does not exist or if the setting name cannot be found.
+    private int getGoogleSettingValue(String name) throws Exception {
+        String value = null;
+        Cursor c = null;
+        try {
+            ContentResolver resolver = getActivity().getContentResolver();
+            c = resolver.query(GOOGLE_SETTINGS_CONTENT_URI, new String[] { "value" },
+                    "name=?", new String[]{ name }, null);
+            if (c != null && c.moveToNext()) value = c.getString(0);
+        } finally {
+            if (c != null) c.close();
+        }
+        // Throw an exception if value is null. This will indicate that setting is not found.
+        return Integer.parseInt(value);
+    }
+
+    private boolean handleDataReductionProxyPreferenceChange() {
+        int val;
+        try {
+            val = getGoogleSettingValue(WEBVIEW_DATA_REDUCTION_PROXY);
+        } catch (Exception e) {
+            // Accessing GoogleSettings failed. Use the developer setting.
+            return true;
+        }
+
+        Intent i = new Intent();
+        i.setClassName(GOOGLE_SETTINGS_COMPONENT,
+                GOOGLE_SETTINGS_COMPONENT + GOOGLE_SETTINGS_ACTIVITY);
+        try {
+            startActivity(i);
+        } catch (android.content.ActivityNotFoundException ex) {
+            // We found the GoogleSetting but for some reason activity not found.
+            // Do our best and put an alert dialog
+            new AlertDialog.Builder(getActivity()).setMessage(
+                    getActivity().getResources().getString(
+                        R.string.dev_settings_use_google_settings))
+                        .setPositiveButton(android.R.string.ok, this)
+                        .show();
+        }
+        // Use GoogleSettings to set.
+        return false;
+    }
+
     private void writeWebViewDataReductionProxyOptions() {
         Settings.Secure.putInt(getActivity().getContentResolver(),
                 Settings.Secure.WEBVIEW_DATA_REDUCTION_PROXY,
@@ -1282,9 +1343,17 @@ public class DevelopmentSettings extends SettingsPreferenceFragment
     }
 
     private void updateWebViewDataReductionProxyOptions() {
-        updateCheckBox(mWebViewDataReductionProxy, Settings.Secure.getInt(
-                getActivity().getContentResolver(),
-                Settings.Secure.WEBVIEW_DATA_REDUCTION_PROXY, 0) != 0);
+        int val = -1;
+        try {
+              val = getGoogleSettingValue(WEBVIEW_DATA_REDUCTION_PROXY);
+        } catch (Exception e) {
+            // Accessing GoogleSettings failed. Use the developer setting
+        }
+        if (val == -1) {
+            val = Settings.Secure.getInt(getActivity().getContentResolver(),
+                    Settings.Secure.WEBVIEW_DATA_REDUCTION_PROXY, 0);
+        }
+        updateCheckBox(mWebViewDataReductionProxy, val != 0);
     }
 
     @Override