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/*
* Copyright (C) 2019 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.view;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.graphics.Matrix;
import android.os.IBinder;
import android.view.accessibility.AccessibilityManager;
import android.view.accessibility.IAccessibilityEmbeddedConnection;
import java.lang.ref.WeakReference;
/**
* This class is an interface this ViewRootImpl provides to the host view to the latter
* can interact with the view hierarchy in SurfaceControlViewHost.
*
* @hide
*/
final class AccessibilityEmbeddedConnection extends IAccessibilityEmbeddedConnection.Stub {
private final WeakReference<ViewRootImpl> mViewRootImpl;
private final Matrix mTmpScreenMatrix = new Matrix();
AccessibilityEmbeddedConnection(ViewRootImpl viewRootImpl) {
mViewRootImpl = new WeakReference<>(viewRootImpl);
}
@Override
public @Nullable IBinder associateEmbeddedHierarchy(@NonNull IBinder host, int hostViewId) {
final ViewRootImpl viewRootImpl = mViewRootImpl.get();
if (viewRootImpl != null) {
final AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(
viewRootImpl.mContext);
viewRootImpl.mAttachInfo.mLeashedParentToken = host;
viewRootImpl.mAttachInfo.mLeashedParentAccessibilityViewId = hostViewId;
if (accessibilityManager.isEnabled()) {
accessibilityManager.associateEmbeddedHierarchy(host, viewRootImpl.mLeashToken);
}
return viewRootImpl.mLeashToken;
}
return null;
}
@Override
public void disassociateEmbeddedHierarchy() {
final ViewRootImpl viewRootImpl = mViewRootImpl.get();
if (viewRootImpl != null) {
final AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(
viewRootImpl.mContext);
viewRootImpl.mAttachInfo.mLeashedParentToken = null;
viewRootImpl.mAttachInfo.mLeashedParentAccessibilityViewId = View.NO_ID;
viewRootImpl.mAttachInfo.mLocationInParentDisplay.set(0, 0);
if (accessibilityManager.isEnabled()) {
accessibilityManager.disassociateEmbeddedHierarchy(viewRootImpl.mLeashToken);
}
}
}
@Override
public void setScreenMatrix(float[] matrixValues) {
final ViewRootImpl viewRootImpl = mViewRootImpl.get();
if (viewRootImpl != null) {
mTmpScreenMatrix.setValues(matrixValues);
if (viewRootImpl.mAttachInfo.mScreenMatrixInEmbeddedHierarchy == null) {
viewRootImpl.mAttachInfo.mScreenMatrixInEmbeddedHierarchy = new Matrix();
}
viewRootImpl.mAttachInfo.mScreenMatrixInEmbeddedHierarchy.set(mTmpScreenMatrix);
}
}
}
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