| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.app.slice; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.annotation.StringDef; |
| import android.app.PendingIntent; |
| import android.app.RemoteInput; |
| 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; |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| import android.os.RemoteException; |
| import android.widget.RemoteViews; |
| |
| import com.android.internal.util.ArrayUtils; |
| import com.android.internal.util.Preconditions; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| /** |
| * A slice is a piece of app content and actions that can be surfaced outside of the app. |
| * |
| * <p>They are constructed using {@link Builder} in a tree structure |
| * that provides the OS some information about how the content should be displayed. |
| */ |
| public final class Slice implements Parcelable { |
| |
| /** |
| * @hide |
| */ |
| @StringDef({HINT_TITLE, HINT_LIST, HINT_LIST_ITEM, HINT_LARGE, HINT_ACTIONS, HINT_SELECTED, |
| HINT_SOURCE, HINT_MESSAGE, HINT_HORIZONTAL, HINT_NO_TINT, HINT_PARTIAL}) |
| public @interface SliceHint{ } |
| |
| /** |
| * Hint that this content is a title of other content in the slice. This can also indicate that |
| * the content should be used in the shortcut representation of the slice (icon, label, action), |
| * normally this should be indicated by adding the hint on the action containing that content. |
| * |
| * @see SliceView#MODE_SHORTCUT |
| * @see SliceItem#TYPE_ACTION |
| */ |
| public static final String HINT_TITLE = "title"; |
| /** |
| * Hint that all sub-items/sub-slices within this content should be considered |
| * to have {@link #HINT_LIST_ITEM}. |
| */ |
| public static final String HINT_LIST = "list"; |
| /** |
| * Hint that this item is part of a list and should be formatted as if is part |
| * of a list. |
| */ |
| public static final String HINT_LIST_ITEM = "list_item"; |
| /** |
| * Hint that this content is important and should be larger when displayed if |
| * possible. |
| */ |
| public static final String HINT_LARGE = "large"; |
| /** |
| * Hint that this slice contains a number of actions that can be grouped together |
| * in a sort of controls area of the UI. |
| */ |
| public static final String HINT_ACTIONS = "actions"; |
| /** |
| * Hint indicating that this item (and its sub-items) are the current selection. |
| */ |
| public static final String HINT_SELECTED = "selected"; |
| /** |
| * Hint to indicate that this is a message as part of a communication |
| * sequence in this slice. |
| */ |
| public static final String HINT_MESSAGE = "message"; |
| /** |
| * Hint to tag the source (i.e. sender) of a {@link #HINT_MESSAGE}. |
| */ |
| public static final String HINT_SOURCE = "source"; |
| /** |
| * Hint that list items within this slice or subslice would appear better |
| * if organized horizontally. |
| */ |
| public static final String HINT_HORIZONTAL = "horizontal"; |
| /** |
| * Hint to indicate that this content should not be tinted. |
| */ |
| public static final String HINT_NO_TINT = "no_tint"; |
| /** |
| * Hint to indicate that this content should not be shown in the {@link SliceView#MODE_SMALL} |
| * and {@link SliceView#MODE_LARGE} modes of SliceView. This content may be used to populate |
| * the {@link SliceView#MODE_SHORTCUT} format of the slice. |
| * @hide |
| */ |
| public static final String HINT_HIDDEN = "hidden"; |
| /** |
| * Hint to indicate that this content has a toggle action associated with it. To indicate that |
| * the toggle is on, use {@link #HINT_SELECTED}. When the toggle state changes, the intent |
| * associated with it will be sent along with an extra {@link #EXTRA_TOGGLE_STATE} which can be |
| * retrieved to see the new state of the toggle. |
| * @hide |
| */ |
| public static final String HINT_TOGGLE = "toggle"; |
| /** |
| * Hint to indicate that this slice is incomplete and an update will be sent once |
| * loading is complete. Slices which contain HINT_PARTIAL will not be cached by the |
| * OS and should not be cached by apps. |
| */ |
| public static final String HINT_PARTIAL = "partial"; |
| |
| // These two are coming over from prototyping, but we probably don't want in |
| // public API, at least not right now. |
| /** |
| * @hide |
| */ |
| public static final String HINT_ALT = "alt"; |
| /** |
| * Key to retrieve an extra added to an intent when a control is changed. |
| * @hide |
| */ |
| public static final String EXTRA_TOGGLE_STATE = "android.app.slice.extra.TOGGLE_STATE"; |
| |
| private final SliceItem[] mItems; |
| private final @SliceHint String[] mHints; |
| private Uri mUri; |
| |
| Slice(ArrayList<SliceItem> items, @SliceHint String[] hints, Uri uri) { |
| mHints = hints; |
| mItems = items.toArray(new SliceItem[items.size()]); |
| mUri = uri; |
| } |
| |
| protected Slice(Parcel in) { |
| mHints = in.readStringArray(); |
| int n = in.readInt(); |
| mItems = new SliceItem[n]; |
| for (int i = 0; i < n; i++) { |
| mItems[i] = SliceItem.CREATOR.createFromParcel(in); |
| } |
| mUri = Uri.CREATOR.createFromParcel(in); |
| } |
| |
| /** |
| * @return The Uri that this Slice represents. |
| */ |
| public Uri getUri() { |
| return mUri; |
| } |
| |
| /** |
| * @return All child {@link SliceItem}s that this Slice contains. |
| */ |
| public List<SliceItem> getItems() { |
| return Arrays.asList(mItems); |
| } |
| |
| /** |
| * @return All hints associated with this Slice. |
| */ |
| public @SliceHint List<String> getHints() { |
| return Arrays.asList(mHints); |
| } |
| |
| @Override |
| public void writeToParcel(Parcel dest, int flags) { |
| dest.writeStringArray(mHints); |
| dest.writeInt(mItems.length); |
| for (int i = 0; i < mItems.length; i++) { |
| mItems[i].writeToParcel(dest, flags); |
| } |
| mUri.writeToParcel(dest, 0); |
| } |
| |
| @Override |
| public int describeContents() { |
| return 0; |
| } |
| |
| /** |
| * @hide |
| */ |
| public boolean hasHint(@SliceHint String hint) { |
| return ArrayUtils.contains(mHints, hint); |
| } |
| |
| /** |
| * A Builder used to construct {@link Slice}s |
| */ |
| public static class Builder { |
| |
| private final Uri mUri; |
| private ArrayList<SliceItem> mItems = new ArrayList<>(); |
| private @SliceHint ArrayList<String> mHints = new ArrayList<>(); |
| |
| /** |
| * Create a builder which will construct a {@link Slice} for the Given Uri. |
| * @param uri Uri to tag for this slice. |
| */ |
| public Builder(@NonNull Uri uri) { |
| mUri = uri; |
| } |
| |
| /** |
| * Create a builder for a {@link Slice} that is a sub-slice of the slice |
| * being constructed by the provided builder. |
| * @param parent The builder constructing the parent slice |
| */ |
| public Builder(@NonNull Slice.Builder parent) { |
| mUri = parent.mUri.buildUpon().appendPath("_gen") |
| .appendPath(String.valueOf(mItems.size())).build(); |
| } |
| |
| /** |
| * Add hints to the Slice being constructed |
| */ |
| public Builder addHints(@SliceHint String... hints) { |
| mHints.addAll(Arrays.asList(hints)); |
| return this; |
| } |
| |
| /** |
| * Add hints to the Slice being constructed |
| */ |
| public Builder addHints(@SliceHint List<String> hints) { |
| return addHints(hints.toArray(new String[hints.size()])); |
| } |
| |
| /** |
| * Add a sub-slice to the slice being constructed |
| */ |
| public Builder addSubSlice(@NonNull Slice slice) { |
| mItems.add(new SliceItem(slice, SliceItem.TYPE_SLICE, slice.getHints().toArray( |
| new String[slice.getHints().size()]))); |
| return this; |
| } |
| |
| /** |
| * Add an action to the slice being constructed |
| */ |
| public Slice.Builder addAction(@NonNull PendingIntent action, @NonNull Slice s) { |
| mItems.add(new SliceItem(action, s, SliceItem.TYPE_ACTION, new String[0])); |
| return this; |
| } |
| |
| /** |
| * Add text to the slice being constructed |
| */ |
| public Builder addText(CharSequence text, @SliceHint String... hints) { |
| mItems.add(new SliceItem(text, SliceItem.TYPE_TEXT, hints)); |
| return this; |
| } |
| |
| /** |
| * Add text to the slice being constructed |
| */ |
| public Builder addText(CharSequence text, @SliceHint List<String> hints) { |
| return addText(text, hints.toArray(new String[hints.size()])); |
| } |
| |
| /** |
| * Add an image to the slice being constructed |
| */ |
| public Builder addIcon(Icon icon, @SliceHint String... hints) { |
| mItems.add(new SliceItem(icon, SliceItem.TYPE_IMAGE, hints)); |
| return this; |
| } |
| |
| /** |
| * Add an image to the slice being constructed |
| */ |
| public Builder addIcon(Icon icon, @SliceHint List<String> hints) { |
| return addIcon(icon, hints.toArray(new String[hints.size()])); |
| } |
| |
| /** |
| * @hide This isn't final |
| */ |
| public Builder addRemoteView(RemoteViews remoteView, @SliceHint String... hints) { |
| mItems.add(new SliceItem(remoteView, SliceItem.TYPE_REMOTE_VIEW, hints)); |
| return this; |
| } |
| |
| /** |
| * Add remote input to the slice being constructed |
| */ |
| public Slice.Builder addRemoteInput(RemoteInput remoteInput, |
| @SliceHint List<String> hints) { |
| return addRemoteInput(remoteInput, hints.toArray(new String[hints.size()])); |
| } |
| |
| /** |
| * Add remote input to the slice being constructed |
| */ |
| public Slice.Builder addRemoteInput(RemoteInput remoteInput, @SliceHint String... hints) { |
| mItems.add(new SliceItem(remoteInput, SliceItem.TYPE_REMOTE_INPUT, hints)); |
| return this; |
| } |
| |
| /** |
| * Add a color to the slice being constructed |
| */ |
| public Builder addColor(int color, @SliceHint String... hints) { |
| mItems.add(new SliceItem(color, SliceItem.TYPE_COLOR, hints)); |
| return this; |
| } |
| |
| /** |
| * Add a color to the slice being constructed |
| */ |
| public Builder addColor(int color, @SliceHint List<String> hints) { |
| return addColor(color, hints.toArray(new String[hints.size()])); |
| } |
| |
| /** |
| * Add a timestamp to the slice being constructed |
| */ |
| public Slice.Builder addTimestamp(long time, @SliceHint String... hints) { |
| mItems.add(new SliceItem(time, SliceItem.TYPE_TIMESTAMP, hints)); |
| return this; |
| } |
| |
| /** |
| * Add a timestamp to the slice being constructed |
| */ |
| public Slice.Builder addTimestamp(long time, @SliceHint List<String> hints) { |
| return addTimestamp(time, hints.toArray(new String[hints.size()])); |
| } |
| |
| /** |
| * Construct the slice. |
| */ |
| public Slice build() { |
| return new Slice(mItems, mHints.toArray(new String[mHints.size()]), mUri); |
| } |
| } |
| |
| public static final Creator<Slice> CREATOR = new Creator<Slice>() { |
| @Override |
| public Slice createFromParcel(Parcel in) { |
| return new Slice(in); |
| } |
| |
| @Override |
| public Slice[] newArray(int size) { |
| return new Slice[size]; |
| } |
| }; |
| |
| /** |
| * @hide |
| * @return A string representation of this slice. |
| */ |
| public String toString() { |
| return toString(""); |
| } |
| |
| private String toString(String indent) { |
| StringBuilder sb = new StringBuilder(); |
| for (int i = 0; i < mItems.length; i++) { |
| sb.append(indent); |
| if (mItems[i].getType() == SliceItem.TYPE_SLICE) { |
| sb.append("slice:\n"); |
| sb.append(mItems[i].getSlice().toString(indent + " ")); |
| } else if (mItems[i].getType() == SliceItem.TYPE_TEXT) { |
| sb.append("text: "); |
| sb.append(mItems[i].getText()); |
| sb.append("\n"); |
| } else { |
| sb.append(SliceItem.typeToString(mItems[i].getType())); |
| sb.append("\n"); |
| } |
| } |
| return sb.toString(); |
| } |
| |
| /** |
| * Turns a slice Uri into slice content. |
| * |
| * @param resolver ContentResolver to be used. |
| * @param uri The URI to a slice provider |
| * @return The Slice provided by the app or null if none is given. |
| * @see Slice |
| */ |
| public static @Nullable Slice bindSlice(ContentResolver resolver, @NonNull Uri uri) { |
| Preconditions.checkNotNull(uri, "uri"); |
| IContentProvider provider = resolver.acquireProvider(uri); |
| if (provider == null) { |
| throw new IllegalArgumentException("Unknown URI " + uri); |
| } |
| try { |
| Bundle extras = new Bundle(); |
| extras.putParcelable(SliceProvider.EXTRA_BIND_URI, uri); |
| final Bundle res = provider.call(resolver.getPackageName(), SliceProvider.METHOD_SLICE, |
| null, extras); |
| Bundle.setDefusable(res, true); |
| 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); |
| } |
| } |
| |
| /** |
| * 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); |
| } |
| } |
| } |