1 /* 2 * Copyright 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package androidx.webkit.internal; 18 19 import android.webkit.WebView; 20 21 import org.chromium.support_lib_boundary.ServiceWorkerControllerBoundaryInterface; 22 import org.chromium.support_lib_boundary.StaticsBoundaryInterface; 23 import org.chromium.support_lib_boundary.WebViewProviderBoundaryInterface; 24 import org.chromium.support_lib_boundary.WebkitToCompatConverterBoundaryInterface; 25 26 /** 27 * This is a stub class used when the WebView Support Library is invoked on a device incompatible 28 * with the library (either a pre-L device or a device without a compatible WebView APK). 29 * The only method in this class that should be called is {@link #getWebViewFeatures()}. 30 */ 31 public class IncompatibleApkWebViewProviderFactory implements WebViewProviderFactory { 32 private static final String[] EMPTY_STRING_ARRAY = new String[0]; 33 private static final String UNSUPPORTED_EXCEPTION_EXPLANATION = 34 "This should never happen, if this method was called it means we're trying to reach " 35 + "into WebView APK code on an incompatible device. This most likely means the current " 36 + "method is being called too early, or is being called on start-up rather than lazily"; 37 38 @Override 39 public WebViewProviderBoundaryInterface createWebView(WebView webview) { 40 throw new UnsupportedOperationException(UNSUPPORTED_EXCEPTION_EXPLANATION); 41 } 42 43 @Override 44 public WebkitToCompatConverterBoundaryInterface getWebkitToCompatConverter() { 45 throw new UnsupportedOperationException(UNSUPPORTED_EXCEPTION_EXPLANATION); 46 } 47 48 @Override 49 public StaticsBoundaryInterface getStatics() { 50 throw new UnsupportedOperationException(UNSUPPORTED_EXCEPTION_EXPLANATION); 51 } 52 53 @Override 54 public String[] getWebViewFeatures() { 55 return EMPTY_STRING_ARRAY; 56 } 57 58 @Override 59 public ServiceWorkerControllerBoundaryInterface getServiceWorkerController() { 60 throw new UnsupportedOperationException(UNSUPPORTED_EXCEPTION_EXPLANATION); 61 } 62 } 63
