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 // This is the caller of the prompt and is the object that is waiting. 30 protected final CallbackProxy mProxy; 31 // This is the default value of the result. 32 private final boolean mDefaultValue; 33 34 /** 35 * Handle the result if the user cancelled the dialog. 36 */ cancel()37 public final void cancel() { 38 mResult = false; 39 wakeUp(); 40 } 41 42 /** 43 * Handle a confirmation response from the user. 44 */ confirm()45 public final void confirm() { 46 mResult = true; 47 wakeUp(); 48 } 49 JsResult(CallbackProxy proxy, boolean defaultVal)50 /*package*/ JsResult(CallbackProxy proxy, boolean defaultVal) { 51 mProxy = proxy; 52 mDefaultValue = defaultVal; 53 } 54 getResult()55 /*package*/ final boolean getResult() { 56 return mResult; 57 } 58 setReady()59 /*package*/ final void setReady() { 60 mReady = true; 61 if (mTriedToNotifyBeforeReady) { 62 wakeUp(); 63 } 64 } 65 handleDefault()66 /*package*/ void handleDefault() { 67 setReady(); 68 mResult = mDefaultValue; 69 wakeUp(); 70 } 71 72 /* Wake up the WebCore thread. */ wakeUp()73 protected final void wakeUp() { 74 if (mReady) { 75 synchronized (mProxy) { 76 mProxy.notify(); 77 } 78 } else { 79 mTriedToNotifyBeforeReady = true; 80 } 81 } 82 } 83