content/child/shared_worker_devtools_agent.cc

   1 // Copyright 2014 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 #include "content/child/shared_worker_devtools_agent.h"
   6
   7 #include "content/child/child_thread_impl.h"
   8 #include "content/common/devtools_messages.h"
   9 #include "ipc/ipc_channel.h"
  10 #include "third_party/WebKit/public/platform/WebCString.h"
  11 #include "third_party/WebKit/public/platform/WebString.h"
  12 #include "third_party/WebKit/public/web/WebSharedWorker.h"
  13
  14 using blink::WebSharedWorker;
  15 using blink::WebString;
  16
  17 namespace content {
  18
  19 static const size_t kMaxMessageChunkSize =
  20     IPC::Channel::kMaximumMessageSize / 4;
  21
  22 SharedWorkerDevToolsAgent::SharedWorkerDevToolsAgent(
  23     int route_id,
  24     WebSharedWorker* webworker)
  25     : route_id_(route_id),
  26       webworker_(webworker) {
  27 }
  28
  29 SharedWorkerDevToolsAgent::~SharedWorkerDevToolsAgent() {
  30 }
  31
  32 // Called on the Worker thread.
  33 bool SharedWorkerDevToolsAgent::OnMessageReceived(const IPC::Message& message) {
  34   bool handled = true;
  35   IPC_BEGIN_MESSAGE_MAP(SharedWorkerDevToolsAgent, message)
  36     IPC_MESSAGE_HANDLER(DevToolsAgentMsg_Attach, OnAttach)
  37     IPC_MESSAGE_HANDLER(DevToolsAgentMsg_Reattach, OnReattach)
  38     IPC_MESSAGE_HANDLER(DevToolsAgentMsg_Detach, OnDetach)
  39     IPC_MESSAGE_HANDLER(DevToolsAgentMsg_DispatchOnInspectorBackend,
  40                         OnDispatchOnInspectorBackend)
  41     IPC_MESSAGE_UNHANDLED(handled = false)
  42   IPC_END_MESSAGE_MAP()
  43   return handled;
  44 }
  45
  46 void SharedWorkerDevToolsAgent::SendDevToolsMessage(
  47     int call_id,
  48     const blink::WebString& msg,
  49     const blink::WebString& state) {
  50   std::string message = msg.utf8();
  51   std::string post_state = state.utf8();
  52   DevToolsMessageChunk chunk;
  53   chunk.message_size = message.size();
  54   chunk.is_first = true;
  55
  56   if (message.length() < kMaxMessageChunkSize) {
  57     chunk.data.swap(message);
  58     chunk.call_id = call_id;
  59     chunk.post_state = post_state;
  60     chunk.is_last = true;
  61     Send(new DevToolsClientMsg_DispatchOnInspectorFrontend(
  62         route_id_, chunk));
  63     return;
  64   }
  65
  66   for (size_t pos = 0; pos < message.length(); pos += kMaxMessageChunkSize) {
  67     chunk.is_last = pos + kMaxMessageChunkSize >= message.length();
  68     chunk.call_id = chunk.is_last ? call_id : 0;
  69     chunk.post_state = chunk.is_last ? post_state : std::string();
  70     chunk.data = message.substr(pos, kMaxMessageChunkSize);
  71     Send(new DevToolsClientMsg_DispatchOnInspectorFrontend(
  72         route_id_, chunk));
  73     chunk.is_first = false;
  74     chunk.message_size = 0;
  75   }
  76 }
  77
  78 void SharedWorkerDevToolsAgent::OnAttach(const std::string& host_id) {
  79   webworker_->attachDevTools(WebString::fromUTF8(host_id));
  80 }
  81
  82 void SharedWorkerDevToolsAgent::OnReattach(const std::string& host_id,
  83                                            const std::string& state) {
  84   webworker_->reattachDevTools(WebString::fromUTF8(host_id),
  85                                WebString::fromUTF8(state));
  86 }
  87
  88 void SharedWorkerDevToolsAgent::OnDetach() {
  89   webworker_->detachDevTools();
  90 }
  91
  92 void SharedWorkerDevToolsAgent::OnDispatchOnInspectorBackend(
  93     const std::string& message) {
  94   webworker_->dispatchDevToolsMessage(WebString::fromUTF8(message));
  95 }
  96
  97 bool SharedWorkerDevToolsAgent::Send(IPC::Message* message) {
  98   return ChildThreadImpl::current()->Send(message);
  99 }
 100
 101 }  // namespace content