| /* |
| * Copyright (C) 2020 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.service.autofill; |
| |
| import static com.android.internal.util.function.pooled.PooledLambda.obtainMessage; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.annotation.SystemApi; |
| import android.annotation.TestApi; |
| import android.app.Service; |
| import android.content.Intent; |
| import android.content.IntentSender; |
| import android.graphics.PixelFormat; |
| import android.os.BaseBundle; |
| import android.os.Bundle; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.Looper; |
| import android.os.RemoteCallback; |
| import android.os.RemoteException; |
| import android.util.Log; |
| import android.util.Size; |
| import android.view.Display; |
| import android.view.SurfaceControlViewHost; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.view.WindowManager; |
| |
| /** |
| * A service that renders an inline presentation view given the {@link InlinePresentation}. |
| * |
| * {@hide} |
| */ |
| @SystemApi |
| @TestApi |
| public abstract class InlineSuggestionRenderService extends Service { |
| |
| private static final String TAG = "InlineSuggestionRenderService"; |
| |
| /** |
| * The {@link Intent} that must be declared as handled by the service. |
| * |
| * <p>To be supported, the service must also require the |
| * {@link android.Manifest.permission#BIND_INLINE_SUGGESTION_RENDER_SERVICE} permission so that |
| * other applications can not abuse it. |
| */ |
| public static final String SERVICE_INTERFACE = |
| "android.service.autofill.InlineSuggestionRenderService"; |
| |
| private final Handler mHandler = new Handler(Looper.getMainLooper(), null, true); |
| |
| private IInlineSuggestionUiCallback mCallback; |
| |
| /** |
| * If the specified {@code width}/{@code height} is an exact value, then it will be returned as |
| * is, otherwise the method tries to measure a size that is just large enough to fit the view |
| * content, within constraints posed by {@code minSize} and {@code maxSize}. |
| * |
| * @param view the view for which we measure the size |
| * @param width the expected width of the view, either an exact value or {@link |
| * ViewGroup.LayoutParams#WRAP_CONTENT} |
| * @param height the expected width of the view, either an exact value or {@link |
| * ViewGroup.LayoutParams#WRAP_CONTENT} |
| * @param minSize the lower bound of the size to be returned |
| * @param maxSize the upper bound of the size to be returned |
| * @return the measured size of the view based on the given size constraints. |
| */ |
| private Size measuredSize(@NonNull View view, int width, int height, @NonNull Size minSize, |
| @NonNull Size maxSize) { |
| if (width != ViewGroup.LayoutParams.WRAP_CONTENT |
| && height != ViewGroup.LayoutParams.WRAP_CONTENT) { |
| return new Size(width, height); |
| } |
| int widthMeasureSpec; |
| if (width == ViewGroup.LayoutParams.WRAP_CONTENT) { |
| widthMeasureSpec = View.MeasureSpec.makeMeasureSpec(maxSize.getWidth(), |
| View.MeasureSpec.AT_MOST); |
| } else { |
| widthMeasureSpec = View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY); |
| } |
| int heightMeasureSpec; |
| if (height == ViewGroup.LayoutParams.WRAP_CONTENT) { |
| heightMeasureSpec = View.MeasureSpec.makeMeasureSpec(maxSize.getHeight(), |
| View.MeasureSpec.AT_MOST); |
| } else { |
| heightMeasureSpec = View.MeasureSpec.makeMeasureSpec(height, View.MeasureSpec.EXACTLY); |
| } |
| view.measure(widthMeasureSpec, heightMeasureSpec); |
| return new Size(Math.max(view.getMeasuredWidth(), minSize.getWidth()), |
| Math.max(view.getMeasuredHeight(), minSize.getHeight())); |
| } |
| |
| private void handleRenderSuggestion(IInlineSuggestionUiCallback callback, |
| InlinePresentation presentation, int width, int height, IBinder hostInputToken, |
| int displayId) { |
| if (hostInputToken == null) { |
| try { |
| callback.onError(); |
| } catch (RemoteException e) { |
| Log.w(TAG, "RemoteException calling onError()"); |
| } |
| return; |
| } |
| |
| // When we create the UI it should be for the IME display |
| updateDisplay(displayId); |
| try { |
| final View suggestionView = onRenderSuggestion(presentation, width, height); |
| if (suggestionView == null) { |
| Log.w(TAG, "ExtServices failed to render the inline suggestion view."); |
| try { |
| callback.onError(); |
| } catch (RemoteException e) { |
| Log.w(TAG, "Null suggestion view returned by renderer"); |
| } |
| return; |
| } |
| mCallback = callback; |
| final Size measuredSize = measuredSize(suggestionView, width, height, |
| presentation.getInlinePresentationSpec().getMinSize(), |
| presentation.getInlinePresentationSpec().getMaxSize()); |
| Log.v(TAG, "width=" + width + ", height=" + height + ", measuredSize=" + measuredSize); |
| |
| final InlineSuggestionRoot suggestionRoot = new InlineSuggestionRoot(this, callback); |
| suggestionRoot.addView(suggestionView); |
| WindowManager.LayoutParams lp = new WindowManager.LayoutParams(measuredSize.getWidth(), |
| measuredSize.getHeight(), WindowManager.LayoutParams.TYPE_APPLICATION, 0, |
| PixelFormat.TRANSPARENT); |
| |
| final SurfaceControlViewHost host = new SurfaceControlViewHost(this, getDisplay(), |
| hostInputToken); |
| host.setView(suggestionRoot, lp); |
| |
| // Set the suggestion view to be non-focusable so that if its background is set to a |
| // ripple drawable, the ripple won't be shown initially. |
| suggestionView.setFocusable(false); |
| suggestionView.setOnClickListener((v) -> { |
| try { |
| callback.onClick(); |
| } catch (RemoteException e) { |
| Log.w(TAG, "RemoteException calling onClick()"); |
| } |
| }); |
| final View.OnLongClickListener onLongClickListener = |
| suggestionView.getOnLongClickListener(); |
| suggestionView.setOnLongClickListener((v) -> { |
| if (onLongClickListener != null) { |
| onLongClickListener.onLongClick(v); |
| } |
| try { |
| callback.onLongClick(); |
| } catch (RemoteException e) { |
| Log.w(TAG, "RemoteException calling onLongClick()"); |
| } |
| return true; |
| }); |
| |
| sendResult(callback, host.getSurfacePackage(), measuredSize.getWidth(), |
| measuredSize.getHeight()); |
| } finally { |
| updateDisplay(Display.DEFAULT_DISPLAY); |
| } |
| } |
| |
| private void handleGetInlineSuggestionsRendererInfo(@NonNull RemoteCallback callback) { |
| final Bundle rendererInfo = onGetInlineSuggestionsRendererInfo(); |
| callback.sendResult(rendererInfo); |
| } |
| |
| private void sendResult(@NonNull IInlineSuggestionUiCallback callback, |
| @Nullable SurfaceControlViewHost.SurfacePackage surface, int width, int height) { |
| try { |
| callback.onContent(surface, width, height); |
| } catch (RemoteException e) { |
| Log.w(TAG, "RemoteException calling onContent(" + surface + ")"); |
| } |
| } |
| |
| @Override |
| @Nullable |
| public final IBinder onBind(@NonNull Intent intent) { |
| BaseBundle.setShouldDefuse(true); |
| if (SERVICE_INTERFACE.equals(intent.getAction())) { |
| return new IInlineSuggestionRenderService.Stub() { |
| @Override |
| public void renderSuggestion(@NonNull IInlineSuggestionUiCallback callback, |
| @NonNull InlinePresentation presentation, int width, int height, |
| @Nullable IBinder hostInputToken, int displayId) { |
| mHandler.sendMessage( |
| obtainMessage(InlineSuggestionRenderService::handleRenderSuggestion, |
| InlineSuggestionRenderService.this, callback, presentation, |
| width, height, hostInputToken, displayId)); |
| } |
| |
| @Override |
| public void getInlineSuggestionsRendererInfo(@NonNull RemoteCallback callback) { |
| mHandler.sendMessage(obtainMessage( |
| InlineSuggestionRenderService::handleGetInlineSuggestionsRendererInfo, |
| InlineSuggestionRenderService.this, callback)); |
| } |
| }.asBinder(); |
| } |
| |
| Log.w(TAG, "Tried to bind to wrong intent (should be " + SERVICE_INTERFACE + ": " + intent); |
| return null; |
| } |
| |
| /** |
| * Starts the {@link IntentSender} from the client app. |
| * |
| * @param intentSender the {@link IntentSender} to start the attribution UI from the client |
| * app. |
| */ |
| public final void startIntentSender(@NonNull IntentSender intentSender) { |
| if (mCallback == null) return; |
| try { |
| mCallback.onStartIntentSender(intentSender); |
| } catch (RemoteException e) { |
| e.rethrowFromSystemServer(); |
| } |
| } |
| |
| /** |
| * Returns the metadata about the renderer. Returns {@code Bundle.Empty} if no metadata is |
| * provided. |
| */ |
| @NonNull |
| public Bundle onGetInlineSuggestionsRendererInfo() { |
| return Bundle.EMPTY; |
| } |
| |
| /** |
| * Renders the slice into a view. |
| */ |
| @Nullable |
| public View onRenderSuggestion(@NonNull InlinePresentation presentation, int width, |
| int height) { |
| Log.e(TAG, "service implementation (" + getClass() + " does not implement " |
| + "onRenderSuggestion()"); |
| return null; |
| } |
| } |