1 // Copyright (c) 2009 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.sdk.internal;

     6 

     7 import java.util.List;

     8 import java.util.concurrent.ConcurrentHashMap;

     9 import java.util.concurrent.ConcurrentMap;

    10 

    11 import org.chromium.sdk.internal.protocol.data.SomeHandle;

    12 import org.chromium.sdk.internal.protocolparser.JsonProtocolParseException;

    13 import org.chromium.sdk.internal.tools.v8.V8ProtocolUtil;

    14 import org.json.simple.JSONObject;

    15 

    16 /**

    17  * A facility for storage and retrieval of handle objects using their "ref" IDs.

    18  */

    19 public class HandleManager {

    20 

    21   private final ConcurrentMap<Long, SomeHandle> refToHandle =

    22       new ConcurrentHashMap<Long, SomeHandle>();

    23 

    24   public void putAll(List<SomeHandle> list) {

    25     for (SomeHandle handle : list) {

    26       put(handle.handle(), handle);

    27     }

    28   }

    29 

    30   SomeHandle put(Long ref, JSONObject object) {

    31     SomeHandle smthWithHandle;

    32     try {

    33       smthWithHandle = V8ProtocolUtil.getV8Parser().parse(object, SomeHandle.class);

    34     } catch (JsonProtocolParseException e) {

    35       throw new RuntimeException(e);

    36     }

    37     put(ref, smthWithHandle);

    38     return smthWithHandle;

    39   }

    40 

    41   private void put(Long ref, SomeHandle smthWithHandle) {

    42     SomeHandle oldObject = refToHandle.putIfAbsent(ref, smthWithHandle);

    43     if (oldObject != null) {

    44       mergeValues(oldObject, smthWithHandle);

    45     }

    46   }

    47 

    48   void put(SomeHandle someHandle) {

    49     if (someHandle.handle() >= 0) {

    50       put(someHandle.handle(), someHandle);

    51     }

    52   }

    53 

    54   public SomeHandle getHandle(Long ref) {

    55     return refToHandle.get(ref);

    56   }

    57 

    58   private static void mergeValues(SomeHandle oldObject, SomeHandle newObject) {

    59   }

    60 }