3 files changed, 142 insertions, 17 deletions
diff --git a/core/java/android/app/slice/Slice.java b/core/java/android/app/slice/Slice.java
index fdf8c070b34f..616a5be3e552 100644
--- a/core/java/android/app/slice/Slice.java
+++ b/core/java/android/app/slice/Slice.java
@@ -21,9 +21,12 @@ import android.annotation.Nullable;
 import android.annotation.StringDef;
 import android.app.PendingIntent;
 import android.app.RemoteInput;
-import android.app.slice.widget.SliceView;
+import android.content.ContentProvider;
 import android.content.ContentResolver;
+import android.content.Context;
 import android.content.IContentProvider;
+import android.content.Intent;
+import android.content.pm.ResolveInfo;
 import android.graphics.drawable.Icon;
 import android.net.Uri;
 import android.os.Bundle;
@@ -424,4 +427,58 @@ public final class Slice implements Parcelable {
             resolver.releaseProvider(provider);
         }
     }
+
+    /**
+     * Turns a slice intent into slice content. Expects an explicit intent. If there is no
+     * {@link ContentProvider} associated with the given intent this will throw
+     * {@link IllegalArgumentException}.
+     *
+     * @param context The context to use.
+     * @param intent The intent associated with a slice.
+     * @return The Slice provided by the app or null if none is given.
+     * @see Slice
+     * @see SliceProvider#onMapIntentToUri(Intent)
+     * @see Intent
+     */
+    public static @Nullable Slice bindSlice(Context context, @NonNull Intent intent) {
+        Preconditions.checkNotNull(intent, "intent");
+        Preconditions.checkArgument(intent.getComponent() != null || intent.getPackage() != null,
+                "Slice intent must be explicit " + intent);
+        ContentResolver resolver = context.getContentResolver();
+
+        // Check if the intent has data for the slice uri on it and use that
+        final Uri intentData = intent.getData();
+        if (intentData != null && SliceProvider.SLICE_TYPE.equals(resolver.getType(intentData))) {
+            return bindSlice(resolver, intentData);
+        }
+        // Otherwise ask the app
+        List<ResolveInfo> providers =
+                context.getPackageManager().queryIntentContentProviders(intent, 0);
+        if (providers == null) {
+            throw new IllegalArgumentException("Unable to resolve intent " + intent);
+        }
+        String authority = providers.get(0).providerInfo.authority;
+        Uri uri = new Uri.Builder().scheme(ContentResolver.SCHEME_CONTENT)
+                .authority(authority).build();
+        IContentProvider provider = resolver.acquireProvider(uri);
+        if (provider == null) {
+            throw new IllegalArgumentException("Unknown URI " + uri);
+        }
+        try {
+            Bundle extras = new Bundle();
+            extras.putParcelable(SliceProvider.EXTRA_INTENT, intent);
+            final Bundle res = provider.call(resolver.getPackageName(),
+                    SliceProvider.METHOD_MAP_INTENT, null, extras);
+            if (res == null) {
+                return null;
+            }
+            return res.getParcelable(SliceProvider.EXTRA_SLICE);
+        } catch (RemoteException e) {
+            // Arbitrary and not worth documenting, as Activity
+            // Manager will kill this process shortly anyway.
+            return null;
+        } finally {
+            resolver.releaseProvider(provider);
+        }
+    }
 }
diff --git a/core/java/android/app/slice/SliceProvider.java b/core/java/android/app/slice/SliceProvider.java
index da718dc9a2a2..05f4ce6eb10f 100644
--- a/core/java/android/app/slice/SliceProvider.java
+++ b/core/java/android/app/slice/SliceProvider.java
@@ -16,10 +16,13 @@
 package android.app.slice;
 
 import android.Manifest.permission;
+import android.annotation.NonNull;
+import android.app.slice.widget.SliceView;
 import android.content.ContentProvider;
 import android.content.ContentResolver;
 import android.content.ContentValues;
 import android.content.Intent;
+import android.content.IntentFilter;
 import android.database.ContentObserver;
 import android.database.Cursor;
 import android.net.Uri;
@@ -37,29 +40,45 @@ import android.util.Log;
 import java.util.concurrent.CountDownLatch;
 
 /**
- * A SliceProvider allows app to provide content to be displayed in system
- * spaces. This content is templated and can contain actions, and the behavior
- * of how it is surfaced is specific to the system surface.
+ * A SliceProvider allows an app to provide content to be displayed in system spaces. This content
+ * is templated and can contain actions, and the behavior of how it is surfaced is specific to the
+ * system surface.
+ * <p>
+ * Slices are not currently live content. They are bound once and shown to the user. If the content
+ * changes due to a callback from user interaction, then
+ * {@link ContentResolver#notifyChange(Uri, ContentObserver)} should be used to notify the system.
+ * </p>
+ * <p>
+ * The provider needs to be declared in the manifest to provide the authority for the app. The
+ * authority for most slices is expected to match the package of the application.
+ * </p>
  *
- * <p>Slices are not currently live content. They are bound once and shown to the
- * user. If the content changes due to a callback from user interaction, then
- * {@link ContentResolver#notifyChange(Uri, ContentObserver)}
- * should be used to notify the system.</p>
- *
- * <p>The provider needs to be declared in the manifest to provide the authority
- * for the app. The authority for most slices is expected to match the package
- * of the application.</p>
  * <pre class="prettyprint">
  * {@literal
  * <provider
  *     android:name="com.android.mypkg.MySliceProvider"
  *     android:authorities="com.android.mypkg" />}
  * </pre>
+ * <p>
+ * Slices can be identified by a Uri or by an Intent. To link an Intent with a slice, the provider
+ * must have an {@link IntentFilter} matching the slice intent. When a slice is being requested via
+ * an intent, {@link #onMapIntentToUri(Intent)} can be called and is expected to return an
+ * appropriate Uri representing the slice.
+ *
+ * <pre class="prettyprint">
+ * {@literal
+ * <provider
+ *     android:name="com.android.mypkg.MySliceProvider"
+ *     android:authorities="com.android.mypkg">
+ *     <intent-filter>
+ *         <action android:name="android.intent.action.MY_SLICE_INTENT" />
+ *     </intent-filter>
+ * </provider>}
+ * </pre>
  *
  * @see Slice
  */
 public abstract class SliceProvider extends ContentProvider {
-
     /**
      * This is the Android platform's MIME type for a slice: URI
      * containing a slice implemented through {@link SliceProvider}.
@@ -78,6 +97,14 @@ public abstract class SliceProvider extends ContentProvider {
     /**
      * @hide
      */
+    public static final String METHOD_MAP_INTENT = "map_slice";
+    /**
+     * @hide
+     */
+    public static final String EXTRA_INTENT = "slice_intent";
+    /**
+     * @hide
+     */
     public static final String EXTRA_SLICE = "slice";
 
     private static final boolean DEBUG = false;
@@ -98,6 +125,20 @@ public abstract class SliceProvider extends ContentProvider {
     // TODO: Provide alternate notifyChange that takes in the slice (i.e. notifyChange(Uri, Slice)).
     public abstract Slice onBindSlice(Uri sliceUri);
 
+    /**
+     * This method must be overridden if an {@link IntentFilter} is specified on the SliceProvider.
+     * In that case, this method can be called and is expected to return a non-null Uri representing
+     * a slice. Otherwise this will throw {@link UnsupportedOperationException}.
+     *
+     * @return Uri representing the slice associated with the provided intent.
+     * @see {@link Slice}
+     * @see {@link SliceView#setSlice(Intent)}
+     */
+    public @NonNull Uri onMapIntentToUri(Intent intent) {
+        throw new UnsupportedOperationException(
+                "This provider has not implemented intent to uri mapping");
+    }
+
     @Override
     public final int update(Uri uri, ContentValues values, String selection,
             String[] selectionArgs) {
@@ -159,6 +200,19 @@ public abstract class SliceProvider extends ContentProvider {
             Bundle b = new Bundle();
             b.putParcelable(EXTRA_SLICE, s);
             return b;
+        } else if (method.equals(METHOD_MAP_INTENT)) {
+            getContext().enforceCallingPermission(permission.BIND_SLICE,
+                    "Slice binding requires the permission BIND_SLICE");
+            Intent intent = extras.getParcelable(EXTRA_INTENT);
+            Uri uri = onMapIntentToUri(intent);
+            Bundle b = new Bundle();
+            if (uri != null) {
+                Slice s = handleBindSlice(uri);
+                b.putParcelable(EXTRA_SLICE, s);
+            } else {
+                b.putParcelable(EXTRA_SLICE, null);
+            }
+            return b;
         }
         return super.call(method, arg, extras);
     }
diff --git a/core/java/android/app/slice/widget/SliceView.java b/core/java/android/app/slice/widget/SliceView.java
index cc13ba39905a..fa1b64ceed97 100644
--- a/core/java/android/app/slice/widget/SliceView.java
+++ b/core/java/android/app/slice/widget/SliceView.java
@@ -183,10 +183,25 @@ public class SliceView extends ViewGroup {
     }
 
     /**
+     * Populates this view with the {@link Slice} associated with the provided {@link Intent}. To
+     * use this method your app must have the permission
+     * {@link android.Manifest.permission#BIND_SLICE}).
+     * <p>
+     * Setting a slice differs from {@link #showSlice(Slice)} because it will ensure the view is
+     * updated with the slice identified by the provided intent changes. The lifecycle of this
+     * observer is handled by SliceView in {@link #onAttachedToWindow()} and
+     * {@link #onDetachedFromWindow()}. To unregister this observer outside of that you can call
+     * {@link #clearSlice}.
+     *
+     * @return true if a slice was found for the provided intent.
      * @hide
      */
-    public void showSlice(Intent intent) {
-        // TODO
+    public boolean setSlice(@Nullable Intent intent) {
+        Slice s = Slice.bindSlice(mContext, intent);
+        if (s != null) {
+            return setSlice(s.getUri());
+        }
+        return s != null;
     }
 
     /**
@@ -199,8 +214,7 @@ public class SliceView extends ViewGroup {
      * is handled by SliceView in {@link #onAttachedToWindow()} and {@link #onDetachedFromWindow()}.
      * To unregister this observer outside of that you can call {@link #clearSlice}.
      *
-     * @return true if the a slice was found for the provided uri.
-     * @see #clearSlice
+     * @return true if a slice was found for the provided uri.
      */
     public boolean setSlice(@NonNull Uri sliceUri) {
         Preconditions.checkNotNull(sliceUri,