Per-user content observer APIs

Callers with INTERACT_ACROSS_USERS_FULL permission can now observe content
for a given user's view (and can notify content uri changes targeted to a
specific user).  An observer watching for UserHandle.USER_ALL will see all
notifications for the given uri across all users; similarly, a notifier
who specifies USER_ALL will broadcast the change to all observers across
all users.

The API handles both USER_ALL or USER_CURRENT, and explicitly forbids
any other "pseudouser" designations.

This CL also revs the Settings provider to notify with USER_ALL for
changes to global settings, and with only the affected user's handle
for all other changes.

Bug 7122169

Change-Id: I94248b11aa91d1beb0a36432e82fe5725bb1264f

1 files changed, 13 insertions, 5 deletions

diff --git a/core/tests/coretests/src/android/content/ObserverNodeTest.java b/core/tests/coretests/src/android/content/ObserverNodeTest.java
index 95b8465..1acff9c 100644
--- a/core/tests/coretests/src/android/content/ObserverNodeTest.java
+++ b/core/tests/coretests/src/android/content/ObserverNodeTest.java
@@ -23,6 +23,7 @@ import android.content.ContentService.ObserverNode;
 import android.database.ContentObserver;
 import android.net.Uri;
 import android.os.Handler;
+import android.os.UserHandle;
 import android.test.AndroidTestCase;
 
 public class ObserverNodeTest extends AndroidTestCase {
@@ -33,6 +34,8 @@ public class ObserverNodeTest extends AndroidTestCase {
     }
 
     public void testUri() {
+        final int myUserHandle = UserHandle.myUserId();
+
         ObserverNode root = new ObserverNode("");
         Uri[] uris = new Uri[] {
             Uri.parse("content://c/a/"),
@@ -48,21 +51,25 @@ public class ObserverNodeTest extends AndroidTestCase {
         int[] nums = new int[] {4, 7, 1, 4, 2, 2, 3, 3};
 
         // special case
-        root.addObserverLocked(uris[0], new TestObserver().getContentObserver(), false, root, 0, 0);
+        root.addObserverLocked(uris[0], new TestObserver().getContentObserver(), false, root,
+                0, 0, myUserHandle);
         for(int i = 1; i < uris.length; i++) {
-            root.addObserverLocked(uris[i], new TestObserver().getContentObserver(), true, root, 0, 0);
+            root.addObserverLocked(uris[i], new TestObserver().getContentObserver(), true, root,
+                    0, 0, myUserHandle);
         }
 
         ArrayList<ObserverCall> calls = new ArrayList<ObserverCall>();
 
         for (int i = nums.length - 1; i >=0; --i) {
-            root.collectObserversLocked(uris[i], 0, null, false, calls);
+            root.collectObserversLocked(uris[i], 0, null, false, myUserHandle, calls);
             assertEquals(nums[i], calls.size());
             calls.clear();
         }
     }
 
     public void testUriNotNotify() {
+        final int myUserHandle = UserHandle.myUserId();
+
         ObserverNode root = new ObserverNode("");
         Uri[] uris = new Uri[] {
             Uri.parse("content://c/"),
@@ -77,13 +84,14 @@ public class ObserverNodeTest extends AndroidTestCase {
         int[] nums = new int[] {7, 1, 3, 3, 1, 1, 1, 1};
 
         for(int i = 0; i < uris.length; i++) {
-            root.addObserverLocked(uris[i], new TestObserver().getContentObserver(), false, root, 0, 0);
+            root.addObserverLocked(uris[i], new TestObserver().getContentObserver(), false, root,
+                    0, 0, myUserHandle);
         }
 
         ArrayList<ObserverCall> calls = new ArrayList<ObserverCall>();
 
         for (int i = uris.length - 1; i >=0; --i) {
-            root.collectObserversLocked(uris[i], 0, null, false, calls);
+            root.collectObserversLocked(uris[i], 0, null, false, myUserHandle, calls);
             assertEquals(nums[i], calls.size());
             calls.clear();
         }