Upstream Site Settings.

chrome/android/java/src/org/chromium/chrome/browser/preferences/LocationSettings.java

Index: chrome/android/java/src/org/chromium/chrome/browser/preferences/LocationSettings.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/preferences/LocationSettings.java b/chrome/android/java/src/org/chromium/chrome/browser/preferences/LocationSettings.java
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index 0000000000000000000000000000000000000000..4d2b58b65bbabb7e806b20938a21537101587f58
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+++ b/chrome/android/java/src/org/chromium/chrome/browser/preferences/LocationSettings.java
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+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.preferences;
+
+import android.content.Context;
+import android.content.Intent;
+import android.location.LocationManager;
+import android.provider.Settings;
+
+import org.chromium.base.ApplicationStatus;
+import org.chromium.base.CalledByNative;
+import org.chromium.base.ThreadUtils;
+import org.chromium.base.VisibleForTesting;
+import org.chromium.base.annotations.SuppressFBWarnings;
+import org.chromium.chrome.browser.ChromiumApplication;
+
+import java.util.concurrent.Callable;
+import java.util.concurrent.ExecutionException;
+
+/**
+ * Provides methods for querying Android system-wide location settings as well as Chrome's internal
+ * location setting.
+ */
+public class LocationSettings {
+
+    private static LocationSettings sInstance;
+
+    protected final Context mContext;
+
+    /**
+     * Don't use this; use getInstance() instead. This should be used only by the Application inside
+     * of createLocationSettings().
+     */
+    public LocationSettings(Context context) {
+        mContext = context;
+    }
+
+    /**
+     * Returns the singleton instance of LocationSettings, creating it if needed.
+     */
+    @SuppressFBWarnings("LI_LAZY_INIT_STATIC")
+    public static LocationSettings getInstance() {
+        if (sInstance == null) {
+            ChromiumApplication application =
+                    (ChromiumApplication) ApplicationStatus.getApplicationContext();
+            sInstance = application.createLocationSettings();
+        }
+        return sInstance;
+    }
+
+    /**
+     * Returns true if location is enabled system-wide and the Chrome location setting is enabled.
+     */
+    @CalledByNative
+    public static boolean areAllLocationSettingsEnabled() {
+        try {
+            return ThreadUtils.runOnUiThreadBlocking(new Callable<Boolean>(){
+                @Override
+                public Boolean call() throws Exception {
+                    LocationSettings settings = LocationSettings.getInstance();
+                    return settings.isChromeLocationSettingEnabled()
+                            && settings.isSystemLocationSettingEnabled();
+                }
+            });
+        } catch (ExecutionException e) {
+            e.printStackTrace();
+            return false;
+        }
+    }
+
+    /**
+     * Returns whether Chrome's user-configurable location setting is enabled.
+     */
+    public boolean isChromeLocationSettingEnabled() {
+        return PrefServiceBridge.getInstance().isAllowLocationEnabled();
+    }
+
+    /**
+     * Returns whether location is enabled system-wide, i.e. whether Chrome itself is able to access
+     * location.
+     */
+    public boolean isSystemLocationSettingEnabled() {
+        LocationManager locationManager =
+                (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE);
+        return (locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)
+                || locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER));
+    }
+
+    /**
+     * Returns an intent to launch Android Location Settings.
+     */
+    public Intent getSystemLocationSettingsIntent() {
+        Intent i = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
+        i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        return i;
+    }
+
+    @VisibleForTesting
+    public static void setInstanceForTesting(LocationSettings instance) {
+        sInstance = instance;
+    }
+}