components/cronet/android/test/src/org/chromium/net/SdchObserver.java

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 package org.chromium.net;
   6
   7 import android.os.ConditionVariable;
   8
   9 import org.chromium.base.annotations.CalledByNative;
  10 import org.chromium.base.annotations.JNINamespace;
  11
  12 /**
  13  * Class to watch for Sdch dictionary events. The native implementation
  14  * unregisters itself when an event happens. Therefore, an instance of this
  15  * class is only able to receive a notification of the earliest event.
  16  * Currently, implemented events include {@link #onDictionaryAdded}.
  17  */
  18 @JNINamespace("cronet")
  19 public class SdchObserver {
  20     protected boolean mDictionaryAlreadyPresent = false;
  21     private final ConditionVariable mAddBlock = new ConditionVariable();
  22
  23     /**
  24      * Constructor.
  25      * @param targetUrl the target url on which sdch encoding will be used.
  26      * @param contextAdapter the native context adapter to register the observer.
  27      * @param isLegacyApi whether legacy api is used.
  28      */
  29     public SdchObserver(String targetUrl, long contextAdapter, boolean isLegacyAPI) {
  30         if (isLegacyAPI) {
  31             nativeAddSdchObserverLegacyAPI(targetUrl, contextAdapter);
  32         } else {
  33             nativeAddSdchObserver(targetUrl, contextAdapter);
  34         }
  35         mAddBlock.block();
  36         mAddBlock.close();
  37     }
  38
  39     /**
  40      * Called when a dictionary is added to the SdchManager for the target url.
  41      * Override this method if caller would like to get notified.
  42      */
  43     @CalledByNative
  44     public void onDictionaryAdded() {
  45         // Left blank;
  46     }
  47
  48     @CalledByNative
  49     private void onAddSdchObserverCompleted() {
  50         mAddBlock.open();
  51     }
  52
  53     @CalledByNative
  54     private void onDictionarySetAlreadyPresent() {
  55         mDictionaryAlreadyPresent = true;
  56         mAddBlock.open();
  57     }
  58
  59     private native void nativeAddSdchObserver(String targetUrl, long contextAdapter);
  60     private native void nativeAddSdchObserverLegacyAPI(String targetUrl, long contextAdapter);
  61 }