WebViewRenderProcessImpl.java
/*
* Copyright 2018 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 androidx.webkit.internal;
import android.annotation.SuppressLint;
import androidx.annotation.NonNull;
import androidx.webkit.WebViewFeature;
import androidx.webkit.WebViewRenderProcess;
import org.chromium.support_lib_boundary.WebViewRendererBoundaryInterface;
import org.chromium.support_lib_boundary.util.BoundaryInterfaceReflectionUtil;
import java.lang.ref.WeakReference;
import java.lang.reflect.InvocationHandler;
import java.util.WeakHashMap;
import java.util.concurrent.Callable;
/**
* Implementation of {@link WebViewRenderProcess}.
* This class uses the framework's {@link android.webkit.WebViewRenderProcess} or the WebView APK to
* implement {@link WebViewRenderProcess} functionality.
*/
public class WebViewRenderProcessImpl extends WebViewRenderProcess {
private WebViewRendererBoundaryInterface mBoundaryInterface;
private WeakReference<android.webkit.WebViewRenderProcess> mFrameworkObject;
private static WeakHashMap<android.webkit.WebViewRenderProcess,
WebViewRenderProcessImpl> sFrameworkMap = new WeakHashMap<>();
public WebViewRenderProcessImpl(@NonNull WebViewRendererBoundaryInterface boundaryInterface) {
mBoundaryInterface = boundaryInterface;
}
public WebViewRenderProcessImpl(
@NonNull android.webkit.WebViewRenderProcess frameworkRenderer) {
mFrameworkObject = new WeakReference<>(frameworkRenderer);
}
/**
* Get a support library WebViewRenderProcess object that is 1:1 with the webview object.
*/
public static @NonNull WebViewRenderProcessImpl forInvocationHandler(
@NonNull InvocationHandler invocationHandler) {
// Make a possibly temporary proxy object in order to call into WebView.
final WebViewRendererBoundaryInterface boundaryInterface =
BoundaryInterfaceReflectionUtil.castToSuppLibClass(
WebViewRendererBoundaryInterface.class,
invocationHandler);
// Ask WebView to either call us back to create the wrapper object, or
// to return a previously created wrapper object.
return (WebViewRenderProcessImpl) boundaryInterface.getOrCreatePeer(
new Callable<Object>() {
@Override
public Object call() {
return new WebViewRenderProcessImpl(boundaryInterface);
}
});
}
/**
* Get a support library WebViewRenderProcess object that is 1:1 with the framework object.
*/
public static @NonNull WebViewRenderProcessImpl forFrameworkObject(
@NonNull android.webkit.WebViewRenderProcess frameworkRenderer) {
WebViewRenderProcessImpl renderer = sFrameworkMap.get(frameworkRenderer);
if (renderer != null) {
return renderer;
}
renderer = new WebViewRenderProcessImpl(frameworkRenderer);
sFrameworkMap.put(frameworkRenderer, renderer);
return renderer;
}
@SuppressLint("NewApi")
@Override
public boolean terminate() {
final WebViewFeatureInternal feature =
WebViewFeatureInternal.getFeature(WebViewFeature.WEB_VIEW_RENDERER_TERMINATE);
if (feature.isSupportedByFramework()) {
android.webkit.WebViewRenderProcess renderer = mFrameworkObject.get();
return renderer != null ? renderer.terminate() : false;
} else if (feature.isSupportedByWebView()) {
return mBoundaryInterface.terminate();
} else {
throw WebViewFeatureInternal.getUnsupportedOperationException();
}
}
}