1 /* 2 * Copyright (C) 2007 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 android.webkit; 18 19 20 public class JsResult { 21 // This prevents a user from interacting with the result before WebCore is 22 // ready to handle it. 23 private boolean mReady; 24 // Tells us if the user tried to confirm or cancel the result before WebCore 25 // is ready. 26 private boolean mTriedToNotifyBeforeReady; 27 // This is a basic result of a confirm or prompt dialog. 28 protected boolean mResult; 29 /** 30 * This is the caller of the prompt and is the object that is waiting. 31 * @hide 32 */ 33 protected final CallbackProxy mProxy; 34 // This is the default value of the result. 35 private final boolean mDefaultValue; 36 37 /** 38 * Handle the result if the user cancelled the dialog. 39 */ cancel()40 public final void cancel() { 41 mResult = false; 42 wakeUp(); 43 } 44 45 /** 46 * Handle a confirmation response from the user. 47 */ confirm()48 public final void confirm() { 49 mResult = true; 50 wakeUp(); 51 } 52 JsResult(CallbackProxy proxy, boolean defaultVal)53 /*package*/ JsResult(CallbackProxy proxy, boolean defaultVal) { 54 mProxy = proxy; 55 mDefaultValue = defaultVal; 56 } 57 getResult()58 /*package*/ final boolean getResult() { 59 return mResult; 60 } 61 setReady()62 /*package*/ final void setReady() { 63 mReady = true; 64 if (mTriedToNotifyBeforeReady) { 65 wakeUp(); 66 } 67 } 68 handleDefault()69 /*package*/ void handleDefault() { 70 setReady(); 71 mResult = mDefaultValue; 72 wakeUp(); 73 } 74 75 /* Wake up the WebCore thread. */ wakeUp()76 protected final void wakeUp() { 77 if (mReady) { 78 synchronized (mProxy) { 79 mProxy.notify(); 80 } 81 } else { 82 mTriedToNotifyBeforeReady = true; 83 } 84 } 85 } 86