chrome/browser/devtools/devtools_embedder_message_dispatcher.cc

   1 // Copyright 2013 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/devtools_embedder_message_dispatcher.h"
   6
   7 #include "base/bind.h"
   8 #include "base/values.h"
   9
  10 namespace {
  11
  12 using DispatchCallback = DevToolsEmbedderMessageDispatcher::DispatchCallback;
  13
  14 bool GetValue(const base::Value* value, std::string* result) {
  15   return value->GetAsString(result);
  16 }
  17
  18 bool GetValue(const base::Value* value, int* result) {
  19   return value->GetAsInteger(result);
  20 }
  21
  22 bool GetValue(const base::Value* value, bool* result) {
  23   return value->GetAsBoolean(result);
  24 }
  25
  26 bool GetValue(const base::Value* value, gfx::Rect* rect) {
  27   const base::DictionaryValue* dict;
  28   if (!value->GetAsDictionary(&dict))
  29     return false;
  30   int x = 0;
  31   int y = 0;
  32   int width = 0;
  33   int height = 0;
  34   if (!dict->GetInteger("x", &x) ||
  35       !dict->GetInteger("y", &y) ||
  36       !dict->GetInteger("width", &width) ||
  37       !dict->GetInteger("height", &height))
  38     return false;
  39   rect->SetRect(x, y, width, height);
  40   return true;
  41 }
  42
  43 template <typename T>
  44 struct StorageTraits {
  45   using StorageType = T;
  46 };
  47
  48 template <typename T>
  49 struct StorageTraits<const T&> {
  50   using StorageType = T;
  51 };
  52
  53 // TODO(dgozman): move back to variadic templates once it compiles everywhere.
  54 // See http://crbug.com/491973.
  55
  56 bool ParseAndHandle0(const base::Callback<void()>& handler,
  57                      const DispatchCallback& callback,
  58                      const base::ListValue& list) {
  59   if (list.GetSize() != 0)
  60     return false;
  61   handler.Run();
  62   return true;
  63 }
  64
  65 template<class A1>
  66 bool ParseAndHandle1(const base::Callback<void(A1)>& handler,
  67                      const DispatchCallback& callback,
  68                      const base::ListValue& list) {
  69   if (list.GetSize() != 1)
  70     return false;
  71   const base::Value* value1;
  72   list.Get(0, &value1);
  73   typename StorageTraits<A1>::StorageType a1;
  74   if (!GetValue(value1, &a1))
  75     return false;
  76   handler.Run(a1);
  77   return true;
  78 }
  79
  80 template<class A1, class A2>
  81 bool ParseAndHandle2(const base::Callback<void(A1, A2)>& handler,
  82                      const DispatchCallback& callback,
  83                      const base::ListValue& list) {
  84   if (list.GetSize() != 2)
  85     return false;
  86   const base::Value* value1;
  87   list.Get(0, &value1);
  88   typename StorageTraits<A1>::StorageType a1;
  89   if (!GetValue(value1, &a1))
  90     return false;
  91   const base::Value* value2;
  92   list.Get(1, &value2);
  93   typename StorageTraits<A2>::StorageType a2;
  94   if (!GetValue(value2, &a2))
  95     return false;
  96   handler.Run(a1, a2);
  97   return true;
  98 }
  99
 100 template<class A1, class A2, class A3>
 101 bool ParseAndHandle3(const base::Callback<void(A1, A2, A3)>& handler,
 102                      const DispatchCallback& callback,
 103                      const base::ListValue& list) {
 104   if (list.GetSize() != 3)
 105     return false;
 106   const base::Value* value1;
 107   list.Get(0, &value1);
 108   typename StorageTraits<A1>::StorageType a1;
 109   if (!GetValue(value1, &a1))
 110     return false;
 111   const base::Value* value2;
 112   list.Get(1, &value2);
 113   typename StorageTraits<A2>::StorageType a2;
 114   if (!GetValue(value2, &a2))
 115     return false;
 116   const base::Value* value3;
 117   list.Get(2, &value3);
 118   typename StorageTraits<A3>::StorageType a3;
 119   if (!GetValue(value3, &a3))
 120     return false;
 121   handler.Run(a1, a2, a3);
 122   return true;
 123 }
 124
 125 bool ParseAndHandleWithCallback0(
 126     const base::Callback<void(const DispatchCallback&)>& handler,
 127     const DispatchCallback& callback,
 128     const base::ListValue& list) {
 129   if (list.GetSize() != 0)
 130     return false;
 131   handler.Run(callback);
 132   return true;
 133 }
 134
 135 template<class A1>
 136 bool ParseAndHandleWithCallback1(
 137    const base::Callback<void(const DispatchCallback&, A1)>& handler,
 138    const DispatchCallback& callback,
 139    const base::ListValue& list) {
 140   if (list.GetSize() != 1)
 141     return false;
 142   const base::Value* value1;
 143   list.Get(0, &value1);
 144   typename StorageTraits<A1>::StorageType a1;
 145   if (!GetValue(value1, &a1))
 146     return false;
 147   handler.Run(callback, a1);
 148   return true;
 149 }
 150
 151 template<class A1, class A2>
 152 bool ParseAndHandleWithCallback2(
 153     const base::Callback<void(const DispatchCallback&, A1, A2)>& handler,
 154     const DispatchCallback& callback,
 155     const base::ListValue& list) {
 156   if (list.GetSize() != 2)
 157     return false;
 158   const base::Value* value1;
 159   list.Get(0, &value1);
 160   typename StorageTraits<A1>::StorageType a1;
 161   if (!GetValue(value1, &a1))
 162     return false;
 163   const base::Value* value2;
 164   list.Get(1, &value2);
 165   typename StorageTraits<A2>::StorageType a2;
 166   if (!GetValue(value2, &a2))
 167     return false;
 168   handler.Run(callback, a1, a2);
 169   return true;
 170 }
 171
 172 template<class A1, class A2, class A3>
 173 bool ParseAndHandleWithCallback3(
 174     const base::Callback<void(const DispatchCallback&, A1, A2, A3)>& handler,
 175     const DispatchCallback& callback,
 176     const base::ListValue& list) {
 177   if (list.GetSize() != 3)
 178     return false;
 179   const base::Value* value1;
 180   list.Get(0, &value1);
 181   typename StorageTraits<A1>::StorageType a1;
 182   if (!GetValue(value1, &a1))
 183     return false;
 184   const base::Value* value2;
 185   list.Get(1, &value2);
 186   typename StorageTraits<A2>::StorageType a2;
 187   if (!GetValue(value2, &a2))
 188     return false;
 189   const base::Value* value3;
 190   list.Get(2, &value3);
 191   typename StorageTraits<A3>::StorageType a3;
 192   if (!GetValue(value3, &a3))
 193     return false;
 194   handler.Run(callback, a1, a2, a3);
 195   return true;
 196 }
 197
 198 } // namespace
 199
 200 /**
 201  * Dispatcher for messages sent from the frontend running in an
 202  * isolated renderer (chrome-devtools:// or chrome://inspect) to the embedder
 203  * in the browser.
 204  *
 205  * The messages are sent via InspectorFrontendHost.sendMessageToEmbedder or
 206  * chrome.send method accordingly.
 207  */
 208 class DispatcherImpl : public DevToolsEmbedderMessageDispatcher {
 209  public:
 210   ~DispatcherImpl() override {}
 211
 212   bool Dispatch(const DispatchCallback& callback,
 213                 const std::string& method,
 214                 const base::ListValue* params) override {
 215     HandlerMap::iterator it = handlers_.find(method);
 216     return it != handlers_.end() && it->second.Run(callback, *params);
 217   }
 218
 219   void RegisterHandler(const std::string& method,
 220                        void (Delegate::*handler)(),
 221                        Delegate* delegate) {
 222     handlers_[method] = base::Bind(&ParseAndHandle0,
 223                                    base::Bind(handler,
 224                                               base::Unretained(delegate)));
 225   }
 226
 227   template<class A1>
 228   void RegisterHandler(const std::string& method,
 229                        void (Delegate::*handler)(A1),
 230                        Delegate* delegate) {
 231     handlers_[method] = base::Bind(&ParseAndHandle1<A1>,
 232                                    base::Bind(handler,
 233                                               base::Unretained(delegate)));
 234   }
 235
 236   template<class A1, class A2>
 237   void RegisterHandler(const std::string& method,
 238                        void (Delegate::*handler)(A1, A2),
 239                        Delegate* delegate) {
 240     handlers_[method] = base::Bind(&ParseAndHandle2<A1, A2>,
 241                                    base::Bind(handler,
 242                                               base::Unretained(delegate)));
 243   }
 244
 245   template<class A1, class A2, class A3>
 246   void RegisterHandler(const std::string& method,
 247                        void (Delegate::*handler)(A1, A2, A3),
 248                        Delegate* delegate) {
 249     handlers_[method] = base::Bind(&ParseAndHandle3<A1, A2, A3>,
 250                                    base::Bind(handler,
 251                                               base::Unretained(delegate)));
 252   }
 253
 254   void RegisterHandlerWithCallback(
 255       const std::string& method,
 256       void (Delegate::*handler)(const DispatchCallback&),
 257       Delegate* delegate) {
 258     handlers_[method] = base::Bind(&ParseAndHandleWithCallback0,
 259                                    base::Bind(handler,
 260                                               base::Unretained(delegate)));
 261   }
 262
 263   template<class A1>
 264   void RegisterHandlerWithCallback(
 265       const std::string& method,
 266       void (Delegate::*handler)(const DispatchCallback&, A1),
 267       Delegate* delegate) {
 268     handlers_[method] = base::Bind(&ParseAndHandleWithCallback1<A1>,
 269                                    base::Bind(handler,
 270                                               base::Unretained(delegate)));
 271   }
 272
 273   template<class A1, class A2>
 274   void RegisterHandlerWithCallback(
 275       const std::string& method,
 276       void (Delegate::*handler)(const DispatchCallback&, A1, A2),
 277       Delegate* delegate) {
 278     handlers_[method] = base::Bind(&ParseAndHandleWithCallback2<A1, A2>,
 279                                    base::Bind(handler,
 280                                               base::Unretained(delegate)));
 281   }
 282
 283   template<class A1, class A2, class A3>
 284   void RegisterHandlerWithCallback(
 285       const std::string& method,
 286       void (Delegate::*handler)(const DispatchCallback&, A1, A2, A3),
 287       Delegate* delegate) {
 288     handlers_[method] = base::Bind(&ParseAndHandleWithCallback3<A1, A2, A3>,
 289                                    base::Bind(handler,
 290                                               base::Unretained(delegate)));
 291   }
 292
 293  private:
 294   using Handler = base::Callback<bool(const DispatchCallback&,
 295                                       const base::ListValue&)>;
 296   using HandlerMap = std::map<std::string, Handler>;
 297   HandlerMap handlers_;
 298 };
 299
 300 // static
 301 DevToolsEmbedderMessageDispatcher*
 302 DevToolsEmbedderMessageDispatcher::CreateForDevToolsFrontend(
 303     Delegate* delegate) {
 304   DispatcherImpl* d = new DispatcherImpl();
 305
 306   d->RegisterHandler("bringToFront", &Delegate::ActivateWindow, delegate);
 307   d->RegisterHandler("closeWindow", &Delegate::CloseWindow, delegate);
 308   d->RegisterHandler("loadCompleted", &Delegate::LoadCompleted, delegate);
 309   d->RegisterHandler("setInspectedPageBounds",
 310                      &Delegate::SetInspectedPageBounds, delegate);
 311   d->RegisterHandler("inspectElementCompleted",
 312                      &Delegate::InspectElementCompleted, delegate);
 313   d->RegisterHandler("inspectedURLChanged",
 314                      &Delegate::InspectedURLChanged, delegate);
 315   d->RegisterHandlerWithCallback("setIsDocked",
 316                                  &Delegate::SetIsDocked, delegate);
 317   d->RegisterHandler("openInNewTab", &Delegate::OpenInNewTab, delegate);
 318   d->RegisterHandler("save", &Delegate::SaveToFile, delegate);
 319   d->RegisterHandler("append", &Delegate::AppendToFile, delegate);
 320   d->RegisterHandler("requestFileSystems",
 321                      &Delegate::RequestFileSystems, delegate);
 322   d->RegisterHandler("addFileSystem", &Delegate::AddFileSystem, delegate);
 323   d->RegisterHandler("removeFileSystem", &Delegate::RemoveFileSystem, delegate);
 324   d->RegisterHandler("upgradeDraggedFileSystemPermissions",
 325                      &Delegate::UpgradeDraggedFileSystemPermissions, delegate);
 326   d->RegisterHandler("indexPath", &Delegate::IndexPath, delegate);
 327   d->RegisterHandlerWithCallback("loadNetworkResource",
 328                                  &Delegate::LoadNetworkResource, delegate);
 329   d->RegisterHandler("stopIndexing", &Delegate::StopIndexing, delegate);
 330   d->RegisterHandler("searchInPath", &Delegate::SearchInPath, delegate);
 331   d->RegisterHandler("setWhitelistedShortcuts",
 332                      &Delegate::SetWhitelistedShortcuts, delegate);
 333   d->RegisterHandler("zoomIn", &Delegate::ZoomIn, delegate);
 334   d->RegisterHandler("zoomOut", &Delegate::ZoomOut, delegate);
 335   d->RegisterHandler("resetZoom", &Delegate::ResetZoom, delegate);
 336   d->RegisterHandler("setDevicesUpdatesEnabled",
 337                      &Delegate::SetDevicesUpdatesEnabled, delegate);
 338   d->RegisterHandler("sendMessageToBrowser",
 339                      &Delegate::SendMessageToBrowser, delegate);
 340   d->RegisterHandler("recordEnumeratedHistogram",
 341                      &Delegate::RecordEnumeratedHistogram, delegate);
 342   d->RegisterHandlerWithCallback("sendJsonRequest",
 343                                  &Delegate::SendJsonRequest, delegate);
 344   d->RegisterHandler("sendFrontendAPINotification",
 345                      &Delegate::SendFrontendAPINotification, delegate);
 346   d->RegisterHandlerWithCallback("getPreferences",
 347                                  &Delegate::GetPreferences, delegate);
 348   d->RegisterHandler("setPreference",
 349                      &Delegate::SetPreference, delegate);
 350   d->RegisterHandler("removePreference",
 351                      &Delegate::RemovePreference, delegate);
 352   d->RegisterHandler("clearPreferences",
 353                      &Delegate::ClearPreferences, delegate);
 354   return d;
 355 }