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| 1 // Copyright (c) 2006-2008 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 #ifndef V8_PROXY_H__ | |
| 6 #define V8_PROXY_H__ | |
| 7 | |
| 8 #include <v8.h> | |
| 9 #include "v8_utility.h" | |
| 10 #include "ChromiumBridge.h" | |
| 11 #include "Node.h" | |
| 12 #include "NodeFilter.h" | |
| 13 #include "PlatformString.h" // for WebCore::String | |
| 14 #include "ScriptSourceCode.h" // for WebCore::ScriptSourceCode | |
| 15 #include "SecurityOrigin.h" // for WebCore::SecurityOrigin | |
| 16 #include "V8CustomBinding.h" | |
| 17 #include "V8DOMMap.h" | |
| 18 #include "V8EventListenerList.h" | |
| 19 #include "V8Index.h" | |
| 20 #include <wtf/Assertions.h> | |
| 21 #include <wtf/PassRefPtr.h> // so generated bindings don't have to | |
| 22 #include <wtf/Vector.h> | |
| 23 | |
| 24 #include <iterator> | |
| 25 #include <list> | |
| 26 | |
| 27 #ifdef ENABLE_DOM_STATS_COUNTERS | |
| 28 #define INC_STATS(name) ChromiumBridge::incrementStatsCounter(name) | |
| 29 #else | |
| 30 #define INC_STATS(name) | |
| 31 #endif | |
| 32 | |
| 33 // FIXME: Remove the following hack when we replace all references to GetDOMObje
ctMap. | |
| 34 #define GetDOMObjectMap getDOMObjectMap | |
| 35 | |
| 36 namespace WebCore { | |
| 37 | |
| 38 class CSSStyleDeclaration; | |
| 39 class ClientRectList; | |
| 40 class DOMImplementation; | |
| 41 class Element; | |
| 42 class Event; | |
| 43 class EventListener; | |
| 44 class Frame; | |
| 45 class HTMLCollection; | |
| 46 class HTMLOptionsCollection; | |
| 47 class HTMLElement; | |
| 48 class HTMLDocument; | |
| 49 class MediaList; | |
| 50 class NamedNodeMap; | |
| 51 class Node; | |
| 52 class NodeList; | |
| 53 class Screen; | |
| 54 class String; | |
| 55 class StyleSheet; | |
| 56 class SVGElement; | |
| 57 class DOMWindow; | |
| 58 class Document; | |
| 59 class EventTarget; | |
| 60 class Event; | |
| 61 class EventListener; | |
| 62 class Navigator; | |
| 63 class MimeType; | |
| 64 class MimeTypeArray; | |
| 65 class Plugin; | |
| 66 class PluginArray; | |
| 67 class StyleSheetList; | |
| 68 class CSSValue; | |
| 69 class CSSRule; | |
| 70 class CSSRuleList; | |
| 71 class CSSValueList; | |
| 72 class NodeFilter; | |
| 73 class ScriptExecutionContext; | |
| 74 | |
| 75 #if ENABLE(DOM_STORAGE) | |
| 76 class Storage; | |
| 77 class StorageEvent; | |
| 78 #endif | |
| 79 | |
| 80 #if ENABLE(SVG) | |
| 81 class SVGElementInstance; | |
| 82 #endif | |
| 83 | |
| 84 class V8EventListener; | |
| 85 class V8ObjectEventListener; | |
| 86 | |
| 87 | |
| 88 // TODO(fqian): use standard logging facilities in WebCore. | |
| 89 void log_info(Frame* frame, const String& msg, const String& url); | |
| 90 | |
| 91 | |
| 92 #ifndef NDEBUG | |
| 93 | |
| 94 #define GlobalHandleTypeList(V) \ | |
| 95 V(PROXY) \ | |
| 96 V(NPOBJECT) \ | |
| 97 V(SCHEDULED_ACTION) \ | |
| 98 V(EVENT_LISTENER) \ | |
| 99 V(NODE_FILTER) \ | |
| 100 V(SCRIPTINSTANCE) \ | |
| 101 V(SCRIPTVALUE) | |
| 102 | |
| 103 | |
| 104 // Host information of persistent handles. | |
| 105 enum GlobalHandleType { | |
| 106 #define ENUM(name) name, | |
| 107 GlobalHandleTypeList(ENUM) | |
| 108 #undef ENUM | |
| 109 }; | |
| 110 | |
| 111 | |
| 112 class GlobalHandleInfo { | |
| 113 public: | |
| 114 GlobalHandleInfo(void* host, GlobalHandleType type) | |
| 115 : host_(host), type_(type) { } | |
| 116 void* host_; | |
| 117 GlobalHandleType type_; | |
| 118 }; | |
| 119 | |
| 120 #endif // NDEBUG | |
| 121 | |
| 122 // The following Batch structs and methods are used for setting multiple | |
| 123 // properties on an ObjectTemplate, used from the generated bindings | |
| 124 // initialization (ConfigureXXXTemplate). This greatly reduces the binary | |
| 125 // size by moving from code driven setup to data table driven setup. | |
| 126 | |
| 127 // BatchedAttribute translates into calls to SetAccessor() on either the | |
| 128 // instance or the prototype ObjectTemplate, based on |on_proto|. | |
| 129 struct BatchedAttribute { | |
| 130 const char* const name; | |
| 131 v8::AccessorGetter getter; | |
| 132 v8::AccessorSetter setter; | |
| 133 V8ClassIndex::V8WrapperType data; | |
| 134 v8::AccessControl settings; | |
| 135 v8::PropertyAttribute attribute; | |
| 136 bool on_proto; | |
| 137 }; | |
| 138 | |
| 139 void BatchConfigureAttributes(v8::Handle<v8::ObjectTemplate> inst, | |
| 140 v8::Handle<v8::ObjectTemplate> proto, | |
| 141 const BatchedAttribute* attrs, | |
| 142 size_t num_attrs); | |
| 143 | |
| 144 // BatchedConstant translates into calls to Set() for setting up an object's | |
| 145 // constants. It sets the constant on both the FunctionTemplate |desc| and the | |
| 146 // ObjectTemplate |proto|. PropertyAttributes is always ReadOnly. | |
| 147 struct BatchedConstant { | |
| 148 const char* const name; | |
| 149 int value; | |
| 150 }; | |
| 151 | |
| 152 void BatchConfigureConstants(v8::Handle<v8::FunctionTemplate> desc, | |
| 153 v8::Handle<v8::ObjectTemplate> proto, | |
| 154 const BatchedConstant* consts, | |
| 155 size_t num_consts); | |
| 156 | |
| 157 const int kMaxRecursionDepth = 20; | |
| 158 | |
| 159 // Information about an extension that is registered for use with V8. If scheme | |
| 160 // is non-empty, it contains the URL scheme the extension should be used with. | |
| 161 // Otherwise, the extension is used with all schemes. | |
| 162 struct V8ExtensionInfo { | |
| 163 String scheme; | |
| 164 v8::Extension* extension; | |
| 165 }; | |
| 166 typedef std::list<V8ExtensionInfo> V8ExtensionList; | |
| 167 | |
| 168 class V8Proxy { | |
| 169 public: | |
| 170 // The types of javascript errors that can be thrown. | |
| 171 enum ErrorType { | |
| 172 RANGE_ERROR, | |
| 173 REFERENCE_ERROR, | |
| 174 SYNTAX_ERROR, | |
| 175 TYPE_ERROR, | |
| 176 GENERAL_ERROR | |
| 177 }; | |
| 178 | |
| 179 explicit V8Proxy(Frame* frame) | |
| 180 : m_frame(frame), m_inlineCode(false), | |
| 181 m_timerCallback(false), m_recursion(0) { } | |
| 182 | |
| 183 ~V8Proxy(); | |
| 184 | |
| 185 Frame* frame() { return m_frame; } | |
| 186 | |
| 187 // Clear page-specific data, but keep the global object identify. | |
| 188 void clearForNavigation(); | |
| 189 | |
| 190 // Clear page-specific data before shutting down the proxy object. | |
| 191 void clearForClose(); | |
| 192 | |
| 193 // Update document object of the frame. | |
| 194 void updateDocument(); | |
| 195 | |
| 196 // Update the security origin of a document | |
| 197 // (e.g., after setting docoument.domain). | |
| 198 void updateSecurityOrigin(); | |
| 199 | |
| 200 // Destroy the global object. | |
| 201 void DestroyGlobal(); | |
| 202 | |
| 203 // TODO(mpcomplete): Need comment. User Gesture related. | |
| 204 bool inlineCode() const { return m_inlineCode; } | |
| 205 void setInlineCode(bool value) { m_inlineCode = value; } | |
| 206 | |
| 207 bool timerCallback() const { return m_timerCallback; } | |
| 208 void setTimerCallback(bool value) { m_timerCallback = value; } | |
| 209 | |
| 210 // Has the context for this proxy been initialized? | |
| 211 bool ContextInitialized(); | |
| 212 | |
| 213 // Disconnects the proxy from its owner frame, | |
| 214 // and clears all timeouts on the DOM window. | |
| 215 void disconnectFrame(); | |
| 216 | |
| 217 bool isEnabled(); | |
| 218 | |
| 219 // Find/Create/Remove event listener wrappers. | |
| 220 PassRefPtr<V8EventListener> FindV8EventListener(v8::Local<v8::Value> listener, | |
| 221 bool html); | |
| 222 PassRefPtr<V8EventListener> FindOrCreateV8EventListener(v8::Local<v8::Value> l
istener, | |
| 223 bool html); | |
| 224 | |
| 225 PassRefPtr<V8EventListener> FindObjectEventListener(v8::Local<v8::Value> liste
ner, | |
| 226 bool html); | |
| 227 PassRefPtr<V8EventListener> FindOrCreateObjectEventListener(v8::Local<v8::Valu
e> listener, | |
| 228 bool html); | |
| 229 | |
| 230 void RemoveV8EventListener(V8EventListener* listener); | |
| 231 void RemoveObjectEventListener(V8ObjectEventListener* listener); | |
| 232 | |
| 233 // Protect/Unprotect JS wrappers of a DOM object. | |
| 234 static void GCProtect(void* dom_object); | |
| 235 static void GCUnprotect(void* dom_object); | |
| 236 | |
| 237 #if ENABLE(SVG) | |
| 238 static void SetSVGContext(void* object, SVGElement* context); | |
| 239 static SVGElement* GetSVGContext(void* object); | |
| 240 #endif | |
| 241 | |
| 242 void setEventHandlerLineno(int lineno) { m_handlerLineno = lineno; } | |
| 243 void finishedWithEvent(Event* event) { } | |
| 244 | |
| 245 // Evaluate JavaScript in a new isolated world. The script gets its own | |
| 246 // global scope, its own prototypes for intrinsic JavaScript objects (String, | |
| 247 // Array, and so-on), and its own wrappers for all DOM nodes and DOM | |
| 248 // constructors. | |
| 249 void evaluateInNewWorld(const Vector<ScriptSourceCode>& sources); | |
| 250 | |
| 251 // Evaluate JavaScript in a new context. The script gets its own global scope | |
| 252 // and its own prototypes for intrinsic JavaScript objects (String, Array, | |
| 253 // and so-on). It shares the wrappers for all DOM nodes and DOM constructors. | |
| 254 void evaluateInNewContext(const Vector<ScriptSourceCode>& sources); | |
| 255 | |
| 256 // Evaluate a script file in the current execution environment. | |
| 257 // The caller must hold an execution context. | |
| 258 // If cannot evalute the script, it returns an error. | |
| 259 v8::Local<v8::Value> evaluate(const ScriptSourceCode& source, | |
| 260 Node* node); | |
| 261 | |
| 262 // Run an already compiled script. | |
| 263 v8::Local<v8::Value> RunScript(v8::Handle<v8::Script> script, | |
| 264 bool inline_code); | |
| 265 | |
| 266 // Call the function with the given receiver and arguments. | |
| 267 v8::Local<v8::Value> CallFunction(v8::Handle<v8::Function> function, | |
| 268 v8::Handle<v8::Object> receiver, | |
| 269 int argc, | |
| 270 v8::Handle<v8::Value> argv[]); | |
| 271 | |
| 272 // Call the function as constructor with the given arguments. | |
| 273 v8::Local<v8::Value> NewInstance(v8::Handle<v8::Function> constructor, | |
| 274 int argc, | |
| 275 v8::Handle<v8::Value> argv[]); | |
| 276 | |
| 277 // Returns the dom constructor function for the given node type. | |
| 278 v8::Local<v8::Function> GetConstructor(V8ClassIndex::V8WrapperType type); | |
| 279 | |
| 280 // To create JS Wrapper objects, we create a cache of a 'boiler plate' | |
| 281 // object, and then simply Clone that object each time we need a new one. | |
| 282 // This is faster than going through the full object creation process. | |
| 283 v8::Local<v8::Object> CreateWrapperFromCache(V8ClassIndex::V8WrapperType type)
; | |
| 284 | |
| 285 // Returns the window object of the currently executing context. | |
| 286 static DOMWindow* retrieveWindow(); | |
| 287 // Returns the window object associated with a context. | |
| 288 static DOMWindow* retrieveWindow(v8::Handle<v8::Context> context); | |
| 289 // Returns V8Proxy object of the currently executing context. | |
| 290 static V8Proxy* retrieve(); | |
| 291 // Returns V8Proxy object associated with a frame. | |
| 292 static V8Proxy* retrieve(Frame* frame); | |
| 293 // Returns V8Proxy object associated with a script execution context. | |
| 294 static V8Proxy* retrieve(ScriptExecutionContext* context); | |
| 295 | |
| 296 // Returns the frame object of the window object associated | |
| 297 // with the currently executing context. | |
| 298 static Frame* retrieveFrame(); | |
| 299 // Returns the frame object of the window object associated with | |
| 300 // a context. | |
| 301 static Frame* retrieveFrame(v8::Handle<v8::Context> context); | |
| 302 | |
| 303 | |
| 304 // The three functions below retrieve WebFrame instances relating the | |
| 305 // currently executing JavaScript. Since JavaScript can make function calls | |
| 306 // across frames, though, we need to be more precise. | |
| 307 // | |
| 308 // For example, imagine that a JS function in frame A calls a function in | |
| 309 // frame B, which calls native code, which wants to know what the 'active' | |
| 310 // frame is. | |
| 311 // | |
| 312 // The 'entered context' is the context where execution first entered the | |
| 313 // script engine; the context that is at the bottom of the JS function stack. | |
| 314 // RetrieveFrameForEnteredContext() would return Frame A in our example. | |
| 315 // This frame is often referred to as the "dynamic global object." | |
| 316 // | |
| 317 // The 'current context' is the context the JS engine is currently inside of; | |
| 318 // the context that is at the top of the JS function stack. | |
| 319 // RetrieveFrameForCurrentContext() would return Frame B in our example. | |
| 320 // This frame is often referred to as the "lexical global object." | |
| 321 // | |
| 322 // Finally, the 'calling context' is the context one below the current | |
| 323 // context on the JS function stack. For example, if function f calls | |
| 324 // function g, then the calling context will be the context associated with | |
| 325 // f. This context is commonly used by DOM security checks because they want | |
| 326 // to know who called them. | |
| 327 // | |
| 328 // If you are unsure which of these functions to use, ask abarth. | |
| 329 // | |
| 330 // NOTE: These cannot be declared as inline function, because VS complains at | |
| 331 // linking time. | |
| 332 static Frame* retrieveFrameForEnteredContext(); | |
| 333 static Frame* retrieveFrameForCurrentContext(); | |
| 334 static Frame* retrieveFrameForCallingContext(); | |
| 335 | |
| 336 // Returns V8 Context of a frame. If none exists, creates | |
| 337 // a new context. It is potentially slow and consumes memory. | |
| 338 static v8::Local<v8::Context> GetContext(Frame* frame); | |
| 339 static v8::Local<v8::Context> GetCurrentContext(); | |
| 340 | |
| 341 // If the current context causes out of memory, JavaScript setting | |
| 342 // is disabled and it returns true. | |
| 343 static bool HandleOutOfMemory(); | |
| 344 | |
| 345 // Check if the active execution context can access the target frame. | |
| 346 static bool CanAccessFrame(Frame* target, bool report_error); | |
| 347 | |
| 348 // Check if it is safe to access the given node from the | |
| 349 // current security context. | |
| 350 static bool CheckNodeSecurity(Node* node); | |
| 351 | |
| 352 static v8::Handle<v8::Value> CheckNewLegal(const v8::Arguments& args); | |
| 353 | |
| 354 // Create a V8 wrapper for a C pointer | |
| 355 static v8::Handle<v8::Value> WrapCPointer(void* cptr) { | |
| 356 // Represent void* as int | |
| 357 int addr = reinterpret_cast<int>(cptr); | |
| 358 ASSERT((addr & 0x01) == 0); // the address must be aligned. | |
| 359 return v8::Integer::New(addr >> 1); | |
| 360 } | |
| 361 | |
| 362 // Take C pointer out of a v8 wrapper | |
| 363 template <class C> | |
| 364 static C* ExtractCPointer(v8::Handle<v8::Value> obj) { | |
| 365 return static_cast<C*>(ExtractCPointerImpl(obj)); | |
| 366 } | |
| 367 | |
| 368 static v8::Handle<v8::Script> CompileScript(v8::Handle<v8::String> code, | |
| 369 const String& fileName, | |
| 370 int baseLine); | |
| 371 | |
| 372 #ifndef NDEBUG | |
| 373 // Checks if a v8 value can be a DOM wrapper | |
| 374 static bool MaybeDOMWrapper(v8::Handle<v8::Value> value); | |
| 375 #endif | |
| 376 | |
| 377 // Sets contents of a DOM wrapper. | |
| 378 static void SetDOMWrapper(v8::Handle<v8::Object> obj, int type, void* ptr); | |
| 379 | |
| 380 static v8::Handle<v8::Object> LookupDOMWrapper( | |
| 381 V8ClassIndex::V8WrapperType type, v8::Handle<v8::Value> value); | |
| 382 | |
| 383 // A helper function extract native object pointer from a DOM wrapper | |
| 384 // and cast to the specified type. | |
| 385 template <class C> | |
| 386 static C* DOMWrapperToNative(v8::Handle<v8::Value> object) { | |
| 387 ASSERT(MaybeDOMWrapper(object)); | |
| 388 v8::Handle<v8::Value> ptr = | |
| 389 v8::Handle<v8::Object>::Cast(object)->GetInternalField( | |
| 390 V8Custom::kDOMWrapperObjectIndex); | |
| 391 return ExtractCPointer<C>(ptr); | |
| 392 } | |
| 393 | |
| 394 // A help function extract a node type pointer from a DOM wrapper. | |
| 395 // Wrapped pointer must be cast to Node* first. | |
| 396 static void* DOMWrapperToNodeHelper(v8::Handle<v8::Value> value); | |
| 397 | |
| 398 template <class C> | |
| 399 static C* DOMWrapperToNode(v8::Handle<v8::Value> value) { | |
| 400 return static_cast<C*>(DOMWrapperToNodeHelper(value)); | |
| 401 } | |
| 402 | |
| 403 template<typename T> | |
| 404 static v8::Handle<v8::Value> ToV8Object(V8ClassIndex::V8WrapperType type, Pass
RefPtr<T> imp) | |
| 405 { | |
| 406 return ToV8Object(type, imp.get()); | |
| 407 } | |
| 408 static v8::Handle<v8::Value> ToV8Object(V8ClassIndex::V8WrapperType type, | |
| 409 void* imp); | |
| 410 // Fast-path for Node objects. | |
| 411 static v8::Handle<v8::Value> NodeToV8Object(Node* node); | |
| 412 | |
| 413 template <class C> | |
| 414 static C* ToNativeObject(V8ClassIndex::V8WrapperType type, | |
| 415 v8::Handle<v8::Value> object) { | |
| 416 return static_cast<C*>(ToNativeObjectImpl(type, object)); | |
| 417 } | |
| 418 | |
| 419 static V8ClassIndex::V8WrapperType GetDOMWrapperType( | |
| 420 v8::Handle<v8::Object> object); | |
| 421 | |
| 422 // If the exception code is different from zero, a DOM exception is | |
| 423 // schedule to be thrown. | |
| 424 static void SetDOMException(int exception_code); | |
| 425 | |
| 426 // Schedule an error object to be thrown. | |
| 427 static v8::Handle<v8::Value> ThrowError(ErrorType type, const char* message); | |
| 428 | |
| 429 // Create an instance of a function descriptor and set to the global object | |
| 430 // as a named property. Used by v8_test_shell. | |
| 431 static void BindJSObjectToWindow(Frame* frame, | |
| 432 const char* name, | |
| 433 int type, | |
| 434 v8::Handle<v8::FunctionTemplate> desc, | |
| 435 void* imp); | |
| 436 | |
| 437 static v8::Handle<v8::Value> EventToV8Object(Event* event); | |
| 438 static Event* ToNativeEvent(v8::Handle<v8::Value> jsevent) { | |
| 439 if (!IsDOMEventWrapper(jsevent)) return 0; | |
| 440 return DOMWrapperToNative<Event>(jsevent); | |
| 441 } | |
| 442 | |
| 443 static v8::Handle<v8::Value> EventTargetToV8Object(EventTarget* target); | |
| 444 // Wrap and unwrap JS event listeners | |
| 445 static v8::Handle<v8::Value> EventListenerToV8Object(EventListener* target); | |
| 446 | |
| 447 // DOMImplementation is a singleton and it is handled in a special | |
| 448 // way. A wrapper is generated per document and stored in an | |
| 449 // internal field of the document. | |
| 450 static v8::Handle<v8::Value> DOMImplementationToV8Object( | |
| 451 DOMImplementation* impl); | |
| 452 | |
| 453 // Wrap JS node filter in C++ | |
| 454 static PassRefPtr<NodeFilter> ToNativeNodeFilter(v8::Handle<v8::Value> filter)
; | |
| 455 | |
| 456 static v8::Persistent<v8::FunctionTemplate> GetTemplate( | |
| 457 V8ClassIndex::V8WrapperType type); | |
| 458 | |
| 459 template <int tag, typename T> | |
| 460 static v8::Handle<v8::Value> ConstructDOMObject(const v8::Arguments& args); | |
| 461 | |
| 462 // Checks whether a DOM object has a JS wrapper. | |
| 463 static bool DOMObjectHasJSWrapper(void* obj); | |
| 464 // Set JS wrapper of a DOM object, the caller in charge of increase ref. | |
| 465 static void SetJSWrapperForDOMObject(void* obj, | |
| 466 v8::Persistent<v8::Object> wrapper); | |
| 467 static void SetJSWrapperForActiveDOMObject(void* obj, | |
| 468 v8::Persistent<v8::Object> wrapper)
; | |
| 469 static void SetJSWrapperForDOMNode(Node* node, | |
| 470 v8::Persistent<v8::Object> wrapper); | |
| 471 | |
| 472 // Process any pending JavaScript console messages. | |
| 473 static void ProcessConsoleMessages(); | |
| 474 | |
| 475 #ifndef NDEBUG | |
| 476 // For debugging and leak detection purpose | |
| 477 static void RegisterGlobalHandle(GlobalHandleType type, | |
| 478 void* host, | |
| 479 v8::Persistent<v8::Value> handle); | |
| 480 static void UnregisterGlobalHandle(void* host, | |
| 481 v8::Persistent<v8::Value> handle); | |
| 482 #endif | |
| 483 | |
| 484 // Check whether a V8 value is a wrapper of type |classType|. | |
| 485 static bool IsWrapperOfType(v8::Handle<v8::Value> obj, | |
| 486 V8ClassIndex::V8WrapperType classType); | |
| 487 | |
| 488 // Function for retrieving the line number and source name for the top | |
| 489 // JavaScript stack frame. | |
| 490 static int GetSourceLineNumber(); | |
| 491 static String GetSourceName(); | |
| 492 | |
| 493 | |
| 494 // Returns a local handle of the context. | |
| 495 v8::Local<v8::Context> GetContext() { | |
| 496 return v8::Local<v8::Context>::New(m_context); | |
| 497 } | |
| 498 | |
| 499 bool SetContextDebugId(int id); | |
| 500 static int GetContextDebugId(v8::Handle<v8::Context> context); | |
| 501 | |
| 502 // Registers an extension to be available on webpages with a particular scheme | |
| 503 // If the scheme argument is empty, the extension is available on all pages. | |
| 504 // Will only affect v8 contexts initialized after this call. Takes ownership | |
| 505 // of the v8::Extension object passed. | |
| 506 static void RegisterExtension(v8::Extension* extension, | |
| 507 const String& schemeRestriction); | |
| 508 | |
| 509 static void* ToSVGPODTypeImpl(V8ClassIndex::V8WrapperType type, | |
| 510 v8::Handle<v8::Value> object); | |
| 511 | |
| 512 // TODO(abarth): Separate these concerns from V8Proxy? | |
| 513 v8::Persistent<v8::Context> createNewContext(v8::Handle<v8::Object> global); | |
| 514 bool installDOMWindow(v8::Handle<v8::Context> context, DOMWindow* window); | |
| 515 | |
| 516 private: | |
| 517 static const char* kContextDebugDataType; | |
| 518 static const char* kContextDebugDataValue; | |
| 519 | |
| 520 void InitContextIfNeeded(); | |
| 521 void DisconnectEventListeners(); | |
| 522 void SetSecurityToken(); | |
| 523 void ClearDocumentWrapper(); | |
| 524 void UpdateDocumentWrapper(v8::Handle<v8::Value> wrapper); | |
| 525 | |
| 526 // The JavaScript wrapper for the document object is cached on the global | |
| 527 // object for fast access. UpdateDocumentWrapperCache sets the wrapper | |
| 528 // for the current document on the global object. ClearDocumentWrapperCache | |
| 529 // deletes the document wrapper from the global object. | |
| 530 void UpdateDocumentWrapperCache(); | |
| 531 void ClearDocumentWrapperCache(); | |
| 532 | |
| 533 // Dispose global handles of m_contexts and friends. | |
| 534 void DisposeContextHandles(); | |
| 535 | |
| 536 static bool CanAccessPrivate(DOMWindow* target); | |
| 537 | |
| 538 // Check whether a V8 value is a DOM Event wrapper | |
| 539 static bool IsDOMEventWrapper(v8::Handle<v8::Value> obj); | |
| 540 | |
| 541 static void* ToNativeObjectImpl(V8ClassIndex::V8WrapperType type, | |
| 542 v8::Handle<v8::Value> object); | |
| 543 | |
| 544 // Take C pointer out of a v8 wrapper | |
| 545 static void* ExtractCPointerImpl(v8::Handle<v8::Value> obj) { | |
| 546 ASSERT(obj->IsNumber()); | |
| 547 int addr = obj->Int32Value(); | |
| 548 return reinterpret_cast<void*>(addr << 1); | |
| 549 } | |
| 550 | |
| 551 | |
| 552 static v8::Handle<v8::Value> StyleSheetToV8Object(StyleSheet* sheet); | |
| 553 static v8::Handle<v8::Value> CSSValueToV8Object(CSSValue* value); | |
| 554 static v8::Handle<v8::Value> CSSRuleToV8Object(CSSRule* rule); | |
| 555 // Returns the JS wrapper of a window object, initializes the environment | |
| 556 // of the window frame if needed. | |
| 557 static v8::Handle<v8::Value> WindowToV8Object(DOMWindow* window); | |
| 558 | |
| 559 #if ENABLE(SVG) | |
| 560 static v8::Handle<v8::Value> SVGElementInstanceToV8Object( | |
| 561 SVGElementInstance* instance); | |
| 562 static v8::Handle<v8::Value> SVGObjectWithContextToV8Object( | |
| 563 V8ClassIndex::V8WrapperType type, void* object); | |
| 564 #endif | |
| 565 | |
| 566 // Set hidden references in a DOMWindow object of a frame. | |
| 567 static void SetHiddenWindowReference(Frame* frame, | |
| 568 const int internal_index, | |
| 569 v8::Handle<v8::Object> jsobj); | |
| 570 | |
| 571 static V8ClassIndex::V8WrapperType GetHTMLElementType(HTMLElement* elm); | |
| 572 | |
| 573 // The first parameter, desc_type, specifies the function descriptor | |
| 574 // used to create JS object. The second parameter, cptr_type, specifies | |
| 575 // the type of third parameter, impl, for type casting. | |
| 576 // For example, a HTML element has HTMLELEMENT desc_type, but always | |
| 577 // use NODE as cptr_type. JS wrapper stores cptr_type and impl as | |
| 578 // internal fields. | |
| 579 static v8::Local<v8::Object> InstantiateV8Object( | |
| 580 V8ClassIndex::V8WrapperType desc_type, | |
| 581 V8ClassIndex::V8WrapperType cptr_type, | |
| 582 void* impl); | |
| 583 | |
| 584 static const char* GetRangeExceptionName(int exception_code); | |
| 585 static const char* GetEventExceptionName(int exception_code); | |
| 586 static const char* GetXMLHttpRequestExceptionName(int exception_code); | |
| 587 static const char* GetDOMExceptionName(int exception_code); | |
| 588 | |
| 589 #if ENABLE(XPATH) | |
| 590 static const char* GetXPathExceptionName(int exception_code); | |
| 591 #endif | |
| 592 | |
| 593 #if ENABLE(SVG) | |
| 594 static V8ClassIndex::V8WrapperType GetSVGElementType(SVGElement* elm); | |
| 595 static const char* GetSVGExceptionName(int exception_code); | |
| 596 #endif | |
| 597 | |
| 598 // Create and populate the utility context. | |
| 599 static void CreateUtilityContext(); | |
| 600 | |
| 601 // Returns a local handle of the utility context. | |
| 602 static v8::Local<v8::Context> GetUtilityContext() { | |
| 603 if (m_utilityContext.IsEmpty()) { | |
| 604 CreateUtilityContext(); | |
| 605 } | |
| 606 return v8::Local<v8::Context>::New(m_utilityContext); | |
| 607 } | |
| 608 | |
| 609 Frame* m_frame; | |
| 610 | |
| 611 v8::Persistent<v8::Context> m_context; | |
| 612 // For each possible type of wrapper, we keep a boilerplate object. | |
| 613 // The boilerplate is used to create additional wrappers of the same type. | |
| 614 // We keep a single persistent handle to an array of the activated | |
| 615 // boilerplates. | |
| 616 v8::Persistent<v8::Array> m_wrapper_boilerplates; | |
| 617 v8::Persistent<v8::Value> m_object_prototype; | |
| 618 | |
| 619 v8::Persistent<v8::Object> m_global; | |
| 620 v8::Persistent<v8::Value> m_document; | |
| 621 | |
| 622 // Utility context holding JavaScript functions used internally. | |
| 623 static v8::Persistent<v8::Context> m_utilityContext; | |
| 624 | |
| 625 int m_handlerLineno; | |
| 626 | |
| 627 // A list of event listeners created for this frame, | |
| 628 // the list gets cleared when removing all timeouts. | |
| 629 V8EventListenerList m_event_listeners; | |
| 630 | |
| 631 // A list of event listeners create for XMLHttpRequest object for this frame, | |
| 632 // the list gets cleared when removing all timeouts. | |
| 633 V8EventListenerList m_xhr_listeners; | |
| 634 | |
| 635 // True for <a href="javascript:foo()"> and false for <script>foo()</script>. | |
| 636 // Only valid during execution. | |
| 637 bool m_inlineCode; | |
| 638 | |
| 639 // True when executing from within a timer callback. Only valid during | |
| 640 // execution. | |
| 641 bool m_timerCallback; | |
| 642 | |
| 643 // Track the recursion depth to be able to avoid too deep recursion. The V8 | |
| 644 // engine allows much more recursion than KJS does so we need to guard against | |
| 645 // excessive recursion in the binding layer. | |
| 646 int m_recursion; | |
| 647 | |
| 648 // List of extensions registered with the context. | |
| 649 static V8ExtensionList m_extensions; | |
| 650 }; | |
| 651 | |
| 652 template <int tag, typename T> | |
| 653 v8::Handle<v8::Value> V8Proxy::ConstructDOMObject(const v8::Arguments& args) { | |
| 654 if (!args.IsConstructCall()) { | |
| 655 V8Proxy::ThrowError(V8Proxy::TYPE_ERROR, | |
| 656 "DOM object constructor cannot be called as a function."); | |
| 657 return v8::Undefined(); | |
| 658 } | |
| 659 | |
| 660 | |
| 661 // Note: it's OK to let this RefPtr go out of scope because we also call | |
| 662 // SetDOMWrapper(), which effectively holds a reference to obj. | |
| 663 RefPtr<T> obj = T::create(); | |
| 664 V8Proxy::SetDOMWrapper(args.Holder(), tag, obj.get()); | |
| 665 obj->ref(); | |
| 666 V8Proxy::SetJSWrapperForDOMObject( | |
| 667 obj.get(), v8::Persistent<v8::Object>::New(args.Holder())); | |
| 668 return args.Holder(); | |
| 669 } | |
| 670 | |
| 671 } // namespace WebCore | |
| 672 | |
| 673 #endif // V8_PROXY_H__ | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 149086:
Use upstream V8Proxy and V8Utilities (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/