Merge "First version of Slice data APIs (hidden for now)"

This commit is contained in:
TreeHugger Robot
2017-10-05 18:36:45 +00:00
committed by Android (Google) Code Review
6 changed files with 958 additions and 1 deletions

View File

@@ -47,6 +47,8 @@ import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.SystemClock;
import android.os.UserHandle;
import android.slice.Slice;
import android.slice.SliceProvider;
import android.text.TextUtils;
import android.util.EventLog;
import android.util.Log;
@@ -178,6 +180,8 @@ public abstract class ContentResolver {
public static final Intent ACTION_SYNC_CONN_STATUS_CHANGED =
new Intent("com.android.sync.SYNC_CONN_STATUS_CHANGED");
/** @hide */
public static final String SCHEME_SLICE = "slice";
public static final String SCHEME_CONTENT = "content";
public static final String SCHEME_ANDROID_RESOURCE = "android.resource";
public static final String SCHEME_FILE = "file";
@@ -1717,6 +1721,36 @@ public abstract class ContentResolver {
}
}
/**
* Turns a slice Uri into slice content.
*
* @param uri The URI to a slice provider
* @return The Slice provided by the app or null if none is given.
* @see Slice
* @hide
*/
public final @Nullable Slice bindSlice(@NonNull Uri uri) {
Preconditions.checkNotNull(uri, "uri");
IContentProvider provider = 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(mPackageName, SliceProvider.METHOD_SLICE, null,
extras);
Bundle.setDefusable(res, true);
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 {
releaseProvider(provider);
}
}
/**
* Returns the content provider for the given content URI.
*
@@ -1725,7 +1759,7 @@ public abstract class ContentResolver {
* @hide
*/
public final IContentProvider acquireProvider(Uri uri) {
if (!SCHEME_CONTENT.equals(uri.getScheme())) {
if (!SCHEME_CONTENT.equals(uri.getScheme()) && !SCHEME_SLICE.equals(uri.getScheme())) {
return null;
}
final String auth = uri.getAuthority();

View File

@@ -0,0 +1,311 @@
/*
* 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.slice;
import static android.slice.SliceItem.TYPE_ACTION;
import static android.slice.SliceItem.TYPE_COLOR;
import static android.slice.SliceItem.TYPE_IMAGE;
import static android.slice.SliceItem.TYPE_REMOTE_INPUT;
import static android.slice.SliceItem.TYPE_REMOTE_VIEW;
import static android.slice.SliceItem.TYPE_SLICE;
import static android.slice.SliceItem.TYPE_TEXT;
import static android.slice.SliceItem.TYPE_TIMESTAMP;
import android.annotation.NonNull;
import android.annotation.StringDef;
import android.app.PendingIntent;
import android.app.RemoteInput;
import android.graphics.drawable.Icon;
import android.net.Uri;
import android.os.Parcel;
import android.os.Parcelable;
import android.widget.RemoteViews;
import java.util.ArrayList;
import java.util.Arrays;
/**
* 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.
* @hide
*/
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})
public @interface SliceHint{ }
/**
* Hint that this content is a title of other content in the slice.
*/
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";
// 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";
/**
* @hide
*/
public static final String HINT_PARTIAL = "partial";
private final SliceItem[] mItems;
private final @SliceHint String[] mHints;
private Uri mUri;
/**
* @hide
*/
public 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 SliceItem[] getItems() {
return mItems;
}
/**
* @return All hints associated with this Slice.
*/
public @SliceHint String[] getHints() {
return mHints;
}
/**
* @hide
*/
public SliceItem getPrimaryIcon() {
for (SliceItem item : getItems()) {
if (item.getType() == TYPE_IMAGE) {
return item;
}
if (!(item.getType() == TYPE_SLICE && item.hasHint(Slice.HINT_LIST))
&& !item.hasHint(Slice.HINT_ACTIONS)
&& !item.hasHint(Slice.HINT_LIST_ITEM)
&& (item.getType() != TYPE_ACTION)) {
SliceItem icon = SliceQuery.find(item, TYPE_IMAGE);
if (icon != null) return icon;
}
}
return null;
}
@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;
}
/**
* 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 a sub-slice to the slice being constructed
*/
public Builder addSubSlice(@NonNull Slice slice) {
mItems.add(new SliceItem(slice, TYPE_SLICE, slice.getHints()));
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, 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, TYPE_TEXT, hints));
return this;
}
/**
* Add an image to the slice being constructed
*/
public Builder addIcon(Icon icon, @SliceHint String... hints) {
mItems.add(new SliceItem(icon, TYPE_IMAGE, hints));
return this;
}
/**
* @hide This isn't final
*/
public Builder addRemoteView(RemoteViews remoteView, @SliceHint String... hints) {
mItems.add(new SliceItem(remoteView, TYPE_REMOTE_VIEW, hints));
return this;
}
/**
* Add remote input to the slice being constructed
*/
public Slice.Builder addRemoteInput(RemoteInput remoteInput, @SliceHint String... hints) {
mItems.add(new SliceItem(remoteInput, 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, TYPE_COLOR, hints));
return this;
}
/**
* Add a timestamp to the slice being constructed
*/
public Slice.Builder addTimestamp(long time, @SliceHint String... hints) {
mItems.add(new SliceItem(time, TYPE_TIMESTAMP, hints));
return this;
}
/**
* 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];
}
};
}

View File

@@ -0,0 +1,312 @@
/*
* 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.slice;
import android.annotation.IntDef;
import android.annotation.NonNull;
import android.app.PendingIntent;
import android.app.RemoteInput;
import android.graphics.drawable.Icon;
import android.os.Parcel;
import android.os.Parcelable;
import android.slice.Slice.SliceHint;
import android.text.TextUtils;
import android.util.Pair;
import android.widget.RemoteViews;
import com.android.internal.util.ArrayUtils;
/**
* A SliceItem is a single unit in the tree structure of a {@link Slice}.
*
* A SliceItem a piece of content and some hints about what that content
* means or how it should be displayed. The types of content can be:
* <li>{@link #TYPE_SLICE}</li>
* <li>{@link #TYPE_TEXT}</li>
* <li>{@link #TYPE_IMAGE}</li>
* <li>{@link #TYPE_ACTION}</li>
* <li>{@link #TYPE_COLOR}</li>
* <li>{@link #TYPE_TIMESTAMP}</li>
* <li>{@link #TYPE_REMOTE_INPUT}</li>
*
* The hints that a {@link SliceItem} are a set of strings which annotate
* the content. The hints that are guaranteed to be understood by the system
* are defined on {@link Slice}.
* @hide
*/
public final class SliceItem implements Parcelable {
/**
* @hide
*/
@IntDef({TYPE_SLICE, TYPE_TEXT, TYPE_IMAGE, TYPE_ACTION, TYPE_COLOR,
TYPE_TIMESTAMP, TYPE_REMOTE_INPUT})
public @interface SliceType {}
/**
* A {@link SliceItem} that contains a {@link Slice}
*/
public static final int TYPE_SLICE = 1;
/**
* A {@link SliceItem} that contains a {@link CharSequence}
*/
public static final int TYPE_TEXT = 2;
/**
* A {@link SliceItem} that contains an {@link Icon}
*/
public static final int TYPE_IMAGE = 3;
/**
* A {@link SliceItem} that contains a {@link PendingIntent}
*
* Note: Actions contain 2 pieces of data, In addition to the pending intent, the
* item contains a {@link Slice} that the action applies to.
*/
public static final int TYPE_ACTION = 4;
/**
* @hide This isn't final
*/
public static final int TYPE_REMOTE_VIEW = 5;
/**
* A {@link SliceItem} that contains a Color int.
*/
public static final int TYPE_COLOR = 6;
/**
* A {@link SliceItem} that contains a timestamp.
*/
public static final int TYPE_TIMESTAMP = 8;
/**
* A {@link SliceItem} that contains a {@link RemoteInput}.
*/
public static final int TYPE_REMOTE_INPUT = 9;
/**
* @hide
*/
protected @SliceHint String[] mHints;
private final int mType;
private final Object mObj;
/**
* @hide
*/
public SliceItem(Object obj, @SliceType int type, @SliceHint String[] hints) {
mHints = hints;
mType = type;
mObj = obj;
}
/**
* @hide
*/
public SliceItem(PendingIntent intent, Slice slice, int type, @SliceHint String[] hints) {
this(new Pair<>(intent, slice), type, hints);
}
/**
* Gets all hints associated with this SliceItem.
* @return Array of hints.
*/
public @NonNull @SliceHint String[] getHints() {
return mHints;
}
/**
* @hide
*/
public void addHint(@SliceHint String hint) {
mHints = ArrayUtils.appendElement(String.class, mHints, hint);
}
public @SliceType int getType() {
return mType;
}
/**
* @return The text held by this {@link #TYPE_TEXT} SliceItem
*/
public CharSequence getText() {
return (CharSequence) mObj;
}
/**
* @return The icon held by this {@link #TYPE_IMAGE} SliceItem
*/
public Icon getIcon() {
return (Icon) mObj;
}
/**
* @return The pending intent held by this {@link #TYPE_ACTION} SliceItem
*/
public PendingIntent getAction() {
return ((Pair<PendingIntent, Slice>) mObj).first;
}
/**
* @hide This isn't final
*/
public RemoteViews getRemoteView() {
return (RemoteViews) mObj;
}
/**
* @return The remote input held by this {@link #TYPE_REMOTE_INPUT} SliceItem
*/
public RemoteInput getRemoteInput() {
return (RemoteInput) mObj;
}
/**
* @return The color held by this {@link #TYPE_COLOR} SliceItem
*/
public int getColor() {
return (Integer) mObj;
}
/**
* @return The slice held by this {@link #TYPE_ACTION} or {@link #TYPE_SLICE} SliceItem
*/
public Slice getSlice() {
if (getType() == TYPE_ACTION) {
return ((Pair<PendingIntent, Slice>) mObj).second;
}
return (Slice) mObj;
}
/**
* @return The timestamp held by this {@link #TYPE_TIMESTAMP} SliceItem
*/
public long getTimestamp() {
return (Long) mObj;
}
/**
* @param hint The hint to check for
* @return true if this item contains the given hint
*/
public boolean hasHint(@SliceHint String hint) {
return ArrayUtils.contains(mHints, hint);
}
/**
* @hide
*/
public SliceItem(Parcel in) {
mHints = in.readStringArray();
mType = in.readInt();
mObj = readObj(mType, in);
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeStringArray(mHints);
dest.writeInt(mType);
writeObj(dest, flags, mObj, mType);
}
/**
* @hide
*/
public boolean hasHints(@SliceHint String[] hints) {
if (hints == null) return true;
for (String hint : hints) {
if (!ArrayUtils.contains(mHints, hint)) {
return false;
}
}
return true;
}
/**
* @hide
*/
public boolean hasAnyHints(@SliceHint String[] hints) {
if (hints == null) return true;
for (String hint : hints) {
if (ArrayUtils.contains(mHints, hint)) {
return true;
}
}
return false;
}
private void writeObj(Parcel dest, int flags, Object obj, int type) {
switch (type) {
case TYPE_SLICE:
case TYPE_REMOTE_VIEW:
case TYPE_IMAGE:
case TYPE_REMOTE_INPUT:
((Parcelable) obj).writeToParcel(dest, flags);
break;
case TYPE_ACTION:
((Pair<PendingIntent, Slice>) obj).first.writeToParcel(dest, flags);
((Pair<PendingIntent, Slice>) obj).second.writeToParcel(dest, flags);
break;
case TYPE_TEXT:
TextUtils.writeToParcel((CharSequence) mObj, dest, flags);
break;
case TYPE_COLOR:
dest.writeInt((Integer) mObj);
break;
case TYPE_TIMESTAMP:
dest.writeLong((Long) mObj);
break;
}
}
private static Object readObj(int type, Parcel in) {
switch (type) {
case TYPE_SLICE:
return Slice.CREATOR.createFromParcel(in);
case TYPE_TEXT:
return TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
case TYPE_IMAGE:
return Icon.CREATOR.createFromParcel(in);
case TYPE_ACTION:
return new Pair<PendingIntent, Slice>(
PendingIntent.CREATOR.createFromParcel(in),
Slice.CREATOR.createFromParcel(in));
case TYPE_REMOTE_VIEW:
return RemoteViews.CREATOR.createFromParcel(in);
case TYPE_COLOR:
return in.readInt();
case TYPE_TIMESTAMP:
return in.readLong();
case TYPE_REMOTE_INPUT:
return RemoteInput.CREATOR.createFromParcel(in);
}
throw new RuntimeException("Unsupported type " + type);
}
public static final Creator<SliceItem> CREATOR = new Creator<SliceItem>() {
@Override
public SliceItem createFromParcel(Parcel in) {
return new SliceItem(in);
}
@Override
public SliceItem[] newArray(int size) {
return new SliceItem[size];
}
};
}

View File

@@ -0,0 +1,156 @@
/*
* 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.slice;
import android.Manifest.permission;
import android.content.ContentProvider;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.database.ContentObserver;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.os.CancellationSignal;
import android.os.Handler;
import android.os.Looper;
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.
*
* <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>
*
* @see Slice
* @hide
*/
public abstract class SliceProvider extends ContentProvider {
private static final String TAG = "SliceProvider";
/**
* @hide
*/
public static final String EXTRA_BIND_URI = "slice_uri";
/**
* @hide
*/
public static final String METHOD_SLICE = "bind_slice";
/**
* @hide
*/
public static final String EXTRA_SLICE = "slice";
private static final boolean DEBUG = false;
/**
* Implemented to create a slice. Will be called on the main thread.
* @see {@link Slice}.
*/
public abstract Slice onBindSlice(Uri sliceUri);
@Override
public final int update(Uri uri, ContentValues values, String selection,
String[] selectionArgs) {
if (DEBUG) Log.d(TAG, "update " + uri);
return 0;
}
@Override
public final int delete(Uri uri, String selection, String[] selectionArgs) {
if (DEBUG) Log.d(TAG, "delete " + uri);
return 0;
}
@Override
public final Cursor query(Uri uri, String[] projection, String selection,
String[] selectionArgs, String sortOrder) {
if (DEBUG) Log.d(TAG, "query " + uri);
return null;
}
@Override
public final Cursor query(Uri uri, String[] projection, String selection, String[]
selectionArgs, String sortOrder, CancellationSignal cancellationSignal) {
if (DEBUG) Log.d(TAG, "query " + uri);
return null;
}
@Override
public final Cursor query(Uri uri, String[] projection, Bundle queryArgs,
CancellationSignal cancellationSignal) {
if (DEBUG) Log.d(TAG, "query " + uri);
return null;
}
@Override
public final Uri insert(Uri uri, ContentValues values) {
if (DEBUG) Log.d(TAG, "insert " + uri);
return null;
}
@Override
public final String getType(Uri uri) {
if (DEBUG) Log.d(TAG, "getType " + uri);
return null;
}
@Override
public final Bundle call(String method, String arg, Bundle extras) {
if (method.equals(METHOD_SLICE)) {
getContext().enforceCallingPermission(permission.BIND_SLICE,
"Slice binding requires the permission BIND_SLICE");
Uri uri = extras.getParcelable(EXTRA_BIND_URI);
Slice s = handleBindSlice(uri);
Bundle b = new Bundle();
b.putParcelable(EXTRA_SLICE, s);
return b;
}
return super.call(method, arg, extras);
}
private Slice handleBindSlice(Uri sliceUri) {
Slice[] output = new Slice[1];
CountDownLatch latch = new CountDownLatch(1);
Handler mainHandler = new Handler(Looper.getMainLooper());
mainHandler.post(() -> {
output[0] = onBindSlice(sliceUri);
latch.countDown();
});
try {
latch.await();
return output[0];
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
}

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@@ -0,0 +1,137 @@
/*
* 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.slice;
import static android.slice.SliceItem.TYPE_ACTION;
import static android.slice.SliceItem.TYPE_SLICE;
import java.util.Arrays;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Queue;
import java.util.Spliterators;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import java.util.stream.StreamSupport;
/**
* A bunch of utilities for searching the contents of a slice.
* @hide
*/
public class SliceQuery {
private static final String TAG = "SliceQuery";
/**
* @hide
*/
public static SliceItem findNotContaining(SliceItem container, List<SliceItem> list) {
SliceItem ret = null;
while (ret == null && list.size() != 0) {
SliceItem remove = list.remove(0);
if (!contains(container, remove)) {
ret = remove;
}
}
return ret;
}
/**
* @hide
*/
private static boolean contains(SliceItem container, SliceItem item) {
if (container == null || item == null) return false;
return stream(container).filter(s -> (s == item)).findAny().isPresent();
}
/**
* @hide
*/
public static List<SliceItem> findAll(SliceItem s, int type, String hints, String nonHints) {
return findAll(s, type, new String[]{ hints }, new String[]{ nonHints });
}
/**
* @hide
*/
public static List<SliceItem> findAll(SliceItem s, int type, String[] hints,
String[] nonHints) {
return stream(s).filter(item -> (type == -1 || item.getType() == type)
&& (item.hasHints(hints) && !item.hasAnyHints(nonHints)))
.collect(Collectors.toList());
}
/**
* @hide
*/
public static SliceItem find(Slice s, int type, String hints, String nonHints) {
return find(s, type, new String[]{ hints }, new String[]{ nonHints });
}
/**
* @hide
*/
public static SliceItem find(SliceItem s, int type) {
return find(s, type, (String[]) null, null);
}
/**
* @hide
*/
public static SliceItem find(SliceItem s, int type, String hints, String nonHints) {
return find(s, type, new String[]{ hints }, new String[]{ nonHints });
}
/**
* @hide
*/
public static SliceItem find(Slice s, int type, String[] hints, String[] nonHints) {
return find(new SliceItem(s, TYPE_SLICE, s.getHints()), type, hints, nonHints);
}
/**
* @hide
*/
public static SliceItem find(SliceItem s, int type, String[] hints, String[] nonHints) {
return stream(s).filter(item -> (item.getType() == type || type == -1)
&& (item.hasHints(hints) && !item.hasAnyHints(nonHints))).findFirst().orElse(null);
}
/**
* @hide
*/
public static Stream<SliceItem> stream(SliceItem slice) {
Queue<SliceItem> items = new LinkedList();
items.add(slice);
Iterator<SliceItem> iterator = new Iterator<SliceItem>() {
@Override
public boolean hasNext() {
return items.size() != 0;
}
@Override
public SliceItem next() {
SliceItem item = items.poll();
if (item.getType() == TYPE_SLICE || item.getType() == TYPE_ACTION) {
items.addAll(Arrays.asList(item.getSlice().getItems()));
}
return item;
}
};
return StreamSupport.stream(Spliterators.spliteratorUnknownSize(iterator, 0), false);
}
}

View File

@@ -3106,6 +3106,13 @@
<permission android:name="android.permission.BIND_APPWIDGET"
android:protectionLevel="signature|privileged" />
<!-- Allows an application to bind app's slices and get their
content. This content will be surfaced to the
user and not to leave the device.
<p>Not for use by third-party applications. @hide -->
<permission android:name="android.permission.BIND_SLICE"
android:protectionLevel="signature|privileged|development" />
<!-- @SystemApi Private permission, to restrict who can bring up a dialog to add a new
keyguard widget
@hide -->