JavaScriptReplyProxyImpl.java
/*
* Copyright 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 androidx.webkit.internal;
import androidx.annotation.NonNull;
import androidx.webkit.JavaScriptReplyProxy;
import org.chromium.support_lib_boundary.JsReplyProxyBoundaryInterface;
import org.chromium.support_lib_boundary.util.BoundaryInterfaceReflectionUtil;
import java.lang.reflect.InvocationHandler;
import java.util.concurrent.Callable;
/**
* Internal implementation of {@link androidx.webkit.JavaScriptReplyProxy}.
*/
public class JavaScriptReplyProxyImpl extends JavaScriptReplyProxy {
private JsReplyProxyBoundaryInterface mBoundaryInterface;
public JavaScriptReplyProxyImpl(@NonNull JsReplyProxyBoundaryInterface boundaryInterface) {
mBoundaryInterface = boundaryInterface;
}
/**
* Get a support library JavaScriptReplyProxy object that is 1:1 with the AndroidX side object.
*/
@NonNull
public static JavaScriptReplyProxyImpl forInvocationHandler(
@NonNull /* JsReplyProxy */ InvocationHandler invocationHandler) {
final JsReplyProxyBoundaryInterface boundaryInterface =
BoundaryInterfaceReflectionUtil.castToSuppLibClass(
JsReplyProxyBoundaryInterface.class, invocationHandler);
return (JavaScriptReplyProxyImpl) boundaryInterface.getOrCreatePeer(
new Callable<Object>() {
@Override
public Object call() {
return new JavaScriptReplyProxyImpl(boundaryInterface);
}
});
}
@Override
public void postMessage(@NonNull final String message) {
final WebViewFeatureInternal feature = WebViewFeatureInternal.WEB_MESSAGE_LISTENER;
if (feature.isSupportedByWebView()) {
mBoundaryInterface.postMessage(message);
} else {
throw WebViewFeatureInternal.getUnsupportedOperationException();
}
}
}