Allow adding widgets from user profiles.

The goal of this change is to enable support for appwidget from
user profiles to the user main profile. A user profile is a user
which is associated as a child of the main user profile. For example,
a user may have a personal (parent) and corporate (child) profile.
The device policy should be able to control whether adding a widget
from a child profile and given packages is allowed. This change
assumes that all packages from managed profiles are white listed.
Another change will add the device policy changes.

(cherrypicked 8cd27c3c to work around Gerrit issue)

Change-Id: I267260b55d74c48b112a29979a9f59eef7a8194e

1 files changed, 89 insertions, 78 deletions

diff --git a/core/java/android/widget/RemoteViews.java b/core/java/android/widget/RemoteViews.java
index 5c7a43b541a2..1098fa23db37 100644
--- a/core/java/android/widget/RemoteViews.java
+++ b/core/java/android/widget/RemoteViews.java
@@ -17,6 +17,7 @@
 package android.widget;
 
 import android.app.ActivityOptions;
+import android.app.ActivityThread;
 import android.app.PendingIntent;
 import android.appwidget.AppWidgetHostView;
 import android.content.Context;
@@ -73,11 +74,11 @@ public class RemoteViews implements Parcelable, Filter {
     static final String EXTRA_REMOTEADAPTER_APPWIDGET_ID = "remoteAdapterAppWidgetId";
 
     /**
-     * User that these views should be applied as. Requires
-     * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} when
-     * crossing user boundaries.
+     * Application that hosts the remote views.
+     *
+     * @hide
      */
-    private UserHandle mUser = android.os.Process.myUserHandle();
+    private ApplicationInfo mApplication;
 
     /**
      * The package name of the package containing the layout
@@ -275,9 +276,9 @@ public class RemoteViews implements Parcelable, Filter {
     /**
      * Merges the passed RemoteViews actions with this RemoteViews actions according to
      * action-specific merge rules.
-     * 
+     *
      * @param newRv
-     * 
+     *
      * @hide
      */
     public void mergeRemoteViews(RemoteViews newRv) {
@@ -1608,16 +1609,16 @@ public class RemoteViews implements Parcelable, Filter {
             int bpp = 4;
             if (c != null) {
                 switch (c) {
-                case ALPHA_8:
-                    bpp = 1;
-                    break;
-                case RGB_565:
-                case ARGB_4444:
-                    bpp = 2;
-                    break;
-                case ARGB_8888:
-                    bpp = 4;
-                    break;
+                    case ALPHA_8:
+                        bpp = 1;
+                        break;
+                    case RGB_565:
+                    case ARGB_4444:
+                        bpp = 2;
+                        break;
+                    case ARGB_8888:
+                        bpp = 4;
+                        break;
                 }
             }
             increment(b.getWidth() * b.getHeight() * bpp);
@@ -1637,17 +1638,13 @@ public class RemoteViews implements Parcelable, Filter {
         mPackage = packageName;
         mLayoutId = layoutId;
         mBitmapCache = new BitmapCache();
+        mApplication = ActivityThread.currentApplication().getApplicationInfo();
 
         // setup the memory usage statistics
         mMemoryUsageCounter = new MemoryUsageCounter();
         recalculateMemoryUsage();
     }
 
-    /** {@hide} */
-    public void setUser(UserHandle user) {
-        mUser = user;
-    }
-
     private boolean hasLandscapeAndPortraitLayouts() {
         return (mLandscape != null) && (mPortrait != null);
     }
@@ -1713,53 +1710,53 @@ public class RemoteViews implements Parcelable, Filter {
                 for (int i=0; i<count; i++) {
                     int tag = parcel.readInt();
                     switch (tag) {
-                    case SetOnClickPendingIntent.TAG:
-                        mActions.add(new SetOnClickPendingIntent(parcel));
-                        break;
-                    case SetDrawableParameters.TAG:
-                        mActions.add(new SetDrawableParameters(parcel));
-                        break;
-                    case ReflectionAction.TAG:
-                        mActions.add(new ReflectionAction(parcel));
-                        break;
-                    case ViewGroupAction.TAG:
-                        mActions.add(new ViewGroupAction(parcel, mBitmapCache));
-                        break;
-                    case ReflectionActionWithoutParams.TAG:
-                        mActions.add(new ReflectionActionWithoutParams(parcel));
-                        break;
-                    case SetEmptyView.TAG:
-                        mActions.add(new SetEmptyView(parcel));
-                        break;
-                    case SetPendingIntentTemplate.TAG:
-                        mActions.add(new SetPendingIntentTemplate(parcel));
-                        break;
-                    case SetOnClickFillInIntent.TAG:
-                        mActions.add(new SetOnClickFillInIntent(parcel));
-                        break;
-                    case SetRemoteViewsAdapterIntent.TAG:
-                        mActions.add(new SetRemoteViewsAdapterIntent(parcel));
-                        break;
-                    case TextViewDrawableAction.TAG:
-                        mActions.add(new TextViewDrawableAction(parcel));
-                        break;
-                    case TextViewSizeAction.TAG:
-                        mActions.add(new TextViewSizeAction(parcel));
-                        break;
-                    case ViewPaddingAction.TAG:
-                        mActions.add(new ViewPaddingAction(parcel));
-                        break;
-                    case BitmapReflectionAction.TAG:
-                        mActions.add(new BitmapReflectionAction(parcel));
-                        break;
-                    case SetRemoteViewsAdapterList.TAG:
-                        mActions.add(new SetRemoteViewsAdapterList(parcel));
-                        break;
-                    case TextViewDrawableColorFilterAction.TAG:
-                        mActions.add(new TextViewDrawableColorFilterAction(parcel));
-                        break;
-                    default:
-                        throw new ActionException("Tag " + tag + " not found");
+                        case SetOnClickPendingIntent.TAG:
+                            mActions.add(new SetOnClickPendingIntent(parcel));
+                            break;
+                        case SetDrawableParameters.TAG:
+                            mActions.add(new SetDrawableParameters(parcel));
+                            break;
+                        case ReflectionAction.TAG:
+                            mActions.add(new ReflectionAction(parcel));
+                            break;
+                        case ViewGroupAction.TAG:
+                            mActions.add(new ViewGroupAction(parcel, mBitmapCache));
+                            break;
+                        case ReflectionActionWithoutParams.TAG:
+                            mActions.add(new ReflectionActionWithoutParams(parcel));
+                            break;
+                        case SetEmptyView.TAG:
+                            mActions.add(new SetEmptyView(parcel));
+                            break;
+                        case SetPendingIntentTemplate.TAG:
+                            mActions.add(new SetPendingIntentTemplate(parcel));
+                            break;
+                        case SetOnClickFillInIntent.TAG:
+                            mActions.add(new SetOnClickFillInIntent(parcel));
+                            break;
+                        case SetRemoteViewsAdapterIntent.TAG:
+                            mActions.add(new SetRemoteViewsAdapterIntent(parcel));
+                            break;
+                        case TextViewDrawableAction.TAG:
+                            mActions.add(new TextViewDrawableAction(parcel));
+                            break;
+                        case TextViewSizeAction.TAG:
+                            mActions.add(new TextViewSizeAction(parcel));
+                            break;
+                        case ViewPaddingAction.TAG:
+                            mActions.add(new ViewPaddingAction(parcel));
+                            break;
+                        case BitmapReflectionAction.TAG:
+                            mActions.add(new BitmapReflectionAction(parcel));
+                            break;
+                        case SetRemoteViewsAdapterList.TAG:
+                            mActions.add(new SetRemoteViewsAdapterList(parcel));
+                            break;
+                        case TextViewDrawableColorFilterAction.TAG:
+                            mActions.add(new TextViewDrawableColorFilterAction(parcel));
+                            break;
+                        default:
+                            throw new ActionException("Tag " + tag + " not found");
                     }
                 }
             }
@@ -1771,6 +1768,8 @@ public class RemoteViews implements Parcelable, Filter {
             mLayoutId = mPortrait.getLayoutId();
         }
 
+        mApplication = parcel.readParcelable(null);
+
         // setup the memory usage statistics
         mMemoryUsageCounter = new MemoryUsageCounter();
         recalculateMemoryUsage();
@@ -2557,22 +2556,32 @@ public class RemoteViews implements Parcelable, Filter {
     }
 
     private Context prepareContext(Context context) {
-        Context c;
-        String packageName = mPackage;
+        if (mApplication != null) {
+            if (context.getUserId() == UserHandle.getUserId(mApplication.uid)
+                    && context.getPackageName().equals(mApplication.packageName)) {
+                return context;
+            }
+            try {
+                return context.createApplicationContext(mApplication,
+                        Context.CONTEXT_RESTRICTED);
+            } catch (NameNotFoundException e) {
+                Log.e(LOG_TAG, "Package name " + mPackage + " not found");
+            }
+        }
 
-        if (packageName != null) {
+        if (mPackage != null) {
+            if (context.getPackageName().equals(mPackage)) {
+                return context;
+            }
             try {
-                c = context.createPackageContextAsUser(
-                        packageName, Context.CONTEXT_RESTRICTED, mUser);
+                return context.createPackageContext(
+                        mPackage, Context.CONTEXT_RESTRICTED);
             } catch (NameNotFoundException e) {
-                Log.e(LOG_TAG, "Package name " + packageName + " not found");
-                c = context;
+                Log.e(LOG_TAG, "Package name " + mPackage + " not found");
             }
-        } else {
-            c = context;
         }
 
-        return c;
+        return context;
     }
 
     /**
@@ -2629,6 +2638,8 @@ public class RemoteViews implements Parcelable, Filter {
             mLandscape.writeToParcel(dest, flags);
             mPortrait.writeToParcel(dest, flags);
         }
+
+        dest.writeParcelable(mApplication, 0);
     }
 
     /**