src/chrome/browser/devtools/chrome_devtools_manager_delegate.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 "chrome/browser/devtools/chrome_devtools_manager_delegate.h"
   6
   7 #include "base/values.h"
   8 #include "chrome/browser/devtools/devtools_network_conditions.h"
   9 #include "chrome/browser/devtools/devtools_network_controller.h"
  10 #include "chrome/browser/devtools/devtools_protocol.h"
  11 #include "chrome/browser/devtools/devtools_protocol_constants.h"
  12 #include "chrome/browser/devtools/devtools_window.h"
  13 #include "chrome/browser/profiles/profile.h"
  14 #include "content/public/browser/browser_thread.h"
  15 #include "content/public/browser/devtools_agent_host.h"
  16 #include "content/public/browser/devtools_manager.h"
  17 #include "content/public/browser/render_process_host.h"
  18 #include "content/public/browser/render_view_host.h"
  19 #include "content/public/browser/site_instance.h"
  20
  21 ChromeDevToolsManagerDelegate::ChromeDevToolsManagerDelegate()
  22     : devtools_callback_(base::Bind(
  23           &ChromeDevToolsManagerDelegate::OnDevToolsStateChanged,
  24           base::Unretained(this))),
  25       devtools_callback_registered_(false) {
  26   // This constructor is invoked from DevToolsManagerImpl constructor, so it
  27   // shouldn't call DevToolsManager::GetInstance()
  28 }
  29
  30 ChromeDevToolsManagerDelegate::~ChromeDevToolsManagerDelegate() {
  31   // This destructor is invoked from DevToolsManagerImpl destructor, so it
  32   // shouldn't call DevToolsManager::GetInstance()
  33 }
  34
  35 void ChromeDevToolsManagerDelegate::EnsureDevtoolsCallbackRegistered() {
  36   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
  37   if (!devtools_callback_registered_) {
  38     content::DevToolsManager::GetInstance()->AddAgentStateCallback(
  39         devtools_callback_);
  40     devtools_callback_registered_ = true;
  41   }
  42 }
  43
  44 void ChromeDevToolsManagerDelegate::Inspect(
  45     content::BrowserContext* browser_context,
  46     content::DevToolsAgentHost* agent_host) {
  47   if (!agent_host->IsWorker()) {
  48     // TODO(horo): Support other types of DevToolsAgentHost when necessary.
  49     NOTREACHED() << "Inspect() only supports workers.";
  50   }
  51 #if !defined(OS_ANDROID)
  52   if (Profile* profile = Profile::FromBrowserContext(browser_context))
  53     DevToolsWindow::OpenDevToolsWindowForWorker(profile, agent_host);
  54 #endif
  55 }
  56
  57 base::DictionaryValue* ChromeDevToolsManagerDelegate::HandleCommand(
  58     content::DevToolsAgentHost* agent_host,
  59     base::DictionaryValue* command_dict) {
  60   scoped_ptr<DevToolsProtocol::Command> command(
  61        DevToolsProtocol::ParseCommand(command_dict));
  62   if (!command)
  63     return NULL;
  64
  65   const std::string method = command->method();
  66   scoped_ptr<DevToolsProtocol::Response> response;
  67
  68   if (method == chrome::devtools::Network::emulateNetworkConditions::kName)
  69     response = EmulateNetworkConditions(agent_host, command.get());
  70
  71   if (response)
  72     return response->Serialize();
  73   return NULL;
  74 }
  75
  76 Profile* ChromeDevToolsManagerDelegate::GetProfile(
  77     content::DevToolsAgentHost* agent_host) {
  78   content::RenderViewHost* host = agent_host->GetRenderViewHost();
  79   if (!host)
  80     return NULL;
  81   return Profile::FromBrowserContext(host->GetSiteInstance()->GetProcess()->
  82       GetBrowserContext());
  83 }
  84
  85 scoped_ptr<DevToolsProtocol::Response>
  86 ChromeDevToolsManagerDelegate::EmulateNetworkConditions(
  87     content::DevToolsAgentHost* agent_host,
  88     DevToolsProtocol::Command* command) {
  89   base::DictionaryValue* params = command->params();
  90   namespace names = ::chrome::devtools::Network::emulateNetworkConditions;
  91
  92   bool offline = false;
  93   if (!params || !params->GetBoolean(names::kParamOffline, &offline))
  94     return command->InvalidParamResponse(names::kParamOffline);
  95
  96   double latency = 0.0;
  97   if (!params->GetDouble(names::kParamLatency, &latency))
  98     return command->InvalidParamResponse(names::kParamLatency);
  99   if (latency < 0.0)
 100     latency = 0.0;
 101
 102   double download_throughput = 0.0;
 103   if (!params->GetDouble(names::kParamDownloadThroughput, &download_throughput))
 104     return command->InvalidParamResponse(names::kParamDownloadThroughput);
 105   if (download_throughput < 0.0)
 106     download_throughput = 0.0;
 107
 108   double upload_throughput = 0.0;
 109   if (!params->GetDouble(names::kParamUploadThroughput, &upload_throughput))
 110     return command->InvalidParamResponse(names::kParamUploadThroughput);
 111   if (upload_throughput < 0.0)
 112     upload_throughput = 0.0;
 113
 114   EnsureDevtoolsCallbackRegistered();
 115   scoped_ptr<DevToolsNetworkConditions> conditions(
 116       new DevToolsNetworkConditions(
 117           offline, latency, download_throughput, upload_throughput));
 118
 119   UpdateNetworkState(agent_host, conditions.Pass());
 120   return command->SuccessResponse(NULL);
 121 }
 122
 123 void ChromeDevToolsManagerDelegate::UpdateNetworkState(
 124     content::DevToolsAgentHost* agent_host,
 125     scoped_ptr<DevToolsNetworkConditions> conditions) {
 126   Profile* profile = GetProfile(agent_host);
 127   if (!profile)
 128     return;
 129   profile->GetDevToolsNetworkController()->SetNetworkState(
 130       agent_host->GetId(), conditions.Pass());
 131 }
 132
 133 void ChromeDevToolsManagerDelegate::OnDevToolsStateChanged(
 134     content::DevToolsAgentHost* agent_host,
 135     bool attached) {
 136   scoped_ptr<DevToolsNetworkConditions> conditions;
 137   if (attached)
 138     conditions.reset(new DevToolsNetworkConditions());
 139   UpdateNetworkState(agent_host, conditions.Pass());
 140 }