DerivedSources/WebCore/JSTextTrack.cpp

   1 /*
   2     This file is part of the WebKit open source project.
   3     This file has been generated by generate-bindings.pl. DO NOT MODIFY!
   4
   5     This library is free software; you can redistribute it and/or
   6     modify it under the terms of the GNU Library General Public
   7     License as published by the Free Software Foundation; either
   8     version 2 of the License, or (at your option) any later version.
   9
  10     This library is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13     Library General Public License for more details.
  14
  15     You should have received a copy of the GNU Library General Public License
  16     along with this library; see the file COPYING.LIB.  If not, write to
  17     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  18     Boston, MA 02110-1301, USA.
  19 */
  20
  21 #include "config.h"
  22
  23 #if ENABLE(VIDEO_TRACK)
  24
  25 #include "JSTextTrack.h"
  26
  27 #include "Event.h"
  28 #include "EventListener.h"
  29 #include "ExceptionCode.h"
  30 #include "JSDOMBinding.h"
  31 #include "JSEvent.h"
  32 #include "JSEventListener.h"
  33 #include "JSTextTrackCue.h"
  34 #include "JSTextTrackCueList.h"
  35 #include "KURL.h"
  36 #include "TextTrack.h"
  37 #include "TextTrackCueList.h"
  38 #include <runtime/Error.h>
  39 #include <runtime/JSString.h>
  40 #include <wtf/GetPtr.h>
  41
  42 using namespace JSC;
  43
  44 namespace WebCore {
  45
  46 ASSERT_CLASS_FITS_IN_CELL(JSTextTrack);
  47
  48 /* Hash table */
  49 #if ENABLE(JIT)
  50 #define THUNK_GENERATOR(generator) , generator
  51 #else
  52 #define THUNK_GENERATOR(generator)
  53 #endif
  54 #if ENABLE(DFG_JIT)
  55 #define INTRINSIC(intrinsic) , intrinsic
  56 #else
  57 #define INTRINSIC(intrinsic)
  58 #endif
  59
  60 static const HashTableValue JSTextTrackTableValues[] =
  61 {
  62     { "kind", DontDelete | ReadOnly, (intptr_t)static_cast<PropertySlot::GetValueFunc>(jsTextTrackKind), (intptr_t)0 THUNK_GENERATOR(0) INTRINSIC(DFG::NoIntrinsic) },
  63     { "label", DontDelete | ReadOnly, (intptr_t)static_cast<PropertySlot::GetValueFunc>(jsTextTrackLabel), (intptr_t)0 THUNK_GENERATOR(0) INTRINSIC(DFG::NoIntrinsic) },
  64     { "language", DontDelete | ReadOnly, (intptr_t)static_cast<PropertySlot::GetValueFunc>(jsTextTrackLanguage), (intptr_t)0 THUNK_GENERATOR(0) INTRINSIC(DFG::NoIntrinsic) },
  65     { "mode", DontDelete, (intptr_t)static_cast<PropertySlot::GetValueFunc>(jsTextTrackMode), (intptr_t)setJSTextTrackMode THUNK_GENERATOR(0) INTRINSIC(DFG::NoIntrinsic) },
  66     { "cues", DontDelete | ReadOnly, (intptr_t)static_cast<PropertySlot::GetValueFunc>(jsTextTrackCues), (intptr_t)0 THUNK_GENERATOR(0) INTRINSIC(DFG::NoIntrinsic) },
  67     { "activeCues", DontDelete | ReadOnly, (intptr_t)static_cast<PropertySlot::GetValueFunc>(jsTextTrackActiveCues), (intptr_t)0 THUNK_GENERATOR(0) INTRINSIC(DFG::NoIntrinsic) },
  68     { "oncuechange", DontDelete, (intptr_t)static_cast<PropertySlot::GetValueFunc>(jsTextTrackOncuechange), (intptr_t)setJSTextTrackOncuechange THUNK_GENERATOR(0) INTRINSIC(DFG::NoIntrinsic) },
  69     { "constructor", DontEnum | ReadOnly, (intptr_t)static_cast<PropertySlot::GetValueFunc>(jsTextTrackConstructor), (intptr_t)0 THUNK_GENERATOR(0) INTRINSIC(DFG::NoIntrinsic) },
  70     { 0, 0, 0, 0 THUNK_GENERATOR(0) INTRINSIC(DFG::NoIntrinsic) }
  71 };
  72
  73 #undef THUNK_GENERATOR
  74 static const HashTable JSTextTrackTable = { 18, 15, JSTextTrackTableValues, 0 };
  75 /* Hash table for constructor */
  76 #if ENABLE(JIT)
  77 #define THUNK_GENERATOR(generator) , generator
  78 #else
  79 #define THUNK_GENERATOR(generator)
  80 #endif
  81 #if ENABLE(DFG_JIT)
  82 #define INTRINSIC(intrinsic) , intrinsic
  83 #else
  84 #define INTRINSIC(intrinsic)
  85 #endif
  86
  87 static const HashTableValue JSTextTrackConstructorTableValues[] =
  88 {
  89     { "DISABLED", DontDelete | ReadOnly, (intptr_t)static_cast<PropertySlot::GetValueFunc>(jsTextTrackDISABLED), (intptr_t)0 THUNK_GENERATOR(0) INTRINSIC(DFG::NoIntrinsic) },
  90     { "HIDDEN", DontDelete | ReadOnly, (intptr_t)static_cast<PropertySlot::GetValueFunc>(jsTextTrackHIDDEN), (intptr_t)0 THUNK_GENERATOR(0) INTRINSIC(DFG::NoIntrinsic) },
  91     { "SHOWING", DontDelete | ReadOnly, (intptr_t)static_cast<PropertySlot::GetValueFunc>(jsTextTrackSHOWING), (intptr_t)0 THUNK_GENERATOR(0) INTRINSIC(DFG::NoIntrinsic) },
  92     { 0, 0, 0, 0 THUNK_GENERATOR(0) INTRINSIC(DFG::NoIntrinsic) }
  93 };
  94
  95 #undef THUNK_GENERATOR
  96 static const HashTable JSTextTrackConstructorTable = { 8, 7, JSTextTrackConstructorTableValues, 0 };
  97
  98 COMPILE_ASSERT(0 == TextTrack::DISABLED, TextTrackEnumDISABLEDIsWrongUseDontCheckEnums);
  99 COMPILE_ASSERT(1 == TextTrack::HIDDEN, TextTrackEnumHIDDENIsWrongUseDontCheckEnums);
 100 COMPILE_ASSERT(2 == TextTrack::SHOWING, TextTrackEnumSHOWINGIsWrongUseDontCheckEnums);
 101
 102 const ClassInfo JSTextTrackConstructor::s_info = { "TextTrackConstructor", &DOMConstructorObject::s_info, &JSTextTrackConstructorTable, 0, CREATE_METHOD_TABLE(JSTextTrackConstructor) };
 103
 104 JSTextTrackConstructor::JSTextTrackConstructor(Structure* structure, JSDOMGlobalObject* globalObject)
 105     : DOMConstructorObject(structure, globalObject)
 106 {
 107 }
 108
 109 void JSTextTrackConstructor::finishCreation(ExecState* exec, JSDOMGlobalObject* globalObject)
 110 {
 111     Base::finishCreation(exec->globalData());
 112     ASSERT(inherits(&s_info));
 113     putDirect(exec->globalData(), exec->propertyNames().prototype, JSTextTrackPrototype::self(exec, globalObject), DontDelete | ReadOnly);
 114 }
 115
 116 bool JSTextTrackConstructor::getOwnPropertySlot(JSCell* cell, ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
 117 {
 118     return getStaticValueSlot<JSTextTrackConstructor, JSDOMWrapper>(exec, &JSTextTrackConstructorTable, static_cast<JSTextTrackConstructor*>(cell), propertyName, slot);
 119 }
 120
 121 bool JSTextTrackConstructor::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
 122 {
 123     return getStaticValueDescriptor<JSTextTrackConstructor, JSDOMWrapper>(exec, &JSTextTrackConstructorTable, static_cast<JSTextTrackConstructor*>(object), propertyName, descriptor);
 124 }
 125
 126 /* Hash table for prototype */
 127 #if ENABLE(JIT)
 128 #define THUNK_GENERATOR(generator) , generator
 129 #else
 130 #define THUNK_GENERATOR(generator)
 131 #endif
 132 #if ENABLE(DFG_JIT)
 133 #define INTRINSIC(intrinsic) , intrinsic
 134 #else
 135 #define INTRINSIC(intrinsic)
 136 #endif
 137
 138 static const HashTableValue JSTextTrackPrototypeTableValues[] =
 139 {
 140     { "DISABLED", DontDelete | ReadOnly, (intptr_t)static_cast<PropertySlot::GetValueFunc>(jsTextTrackDISABLED), (intptr_t)0 THUNK_GENERATOR(0) INTRINSIC(DFG::NoIntrinsic) },
 141     { "HIDDEN", DontDelete | ReadOnly, (intptr_t)static_cast<PropertySlot::GetValueFunc>(jsTextTrackHIDDEN), (intptr_t)0 THUNK_GENERATOR(0) INTRINSIC(DFG::NoIntrinsic) },
 142     { "SHOWING", DontDelete | ReadOnly, (intptr_t)static_cast<PropertySlot::GetValueFunc>(jsTextTrackSHOWING), (intptr_t)0 THUNK_GENERATOR(0) INTRINSIC(DFG::NoIntrinsic) },
 143     { "addCue", DontDelete | Function, (intptr_t)static_cast<NativeFunction>(jsTextTrackPrototypeFunctionAddCue), (intptr_t)1 THUNK_GENERATOR(0) INTRINSIC(DFG::NoIntrinsic) },
 144     { "removeCue", DontDelete | Function, (intptr_t)static_cast<NativeFunction>(jsTextTrackPrototypeFunctionRemoveCue), (intptr_t)1 THUNK_GENERATOR(0) INTRINSIC(DFG::NoIntrinsic) },
 145     { "addEventListener", DontDelete | Function, (intptr_t)static_cast<NativeFunction>(jsTextTrackPrototypeFunctionAddEventListener), (intptr_t)3 THUNK_GENERATOR(0) INTRINSIC(DFG::NoIntrinsic) },
 146     { "removeEventListener", DontDelete | Function, (intptr_t)static_cast<NativeFunction>(jsTextTrackPrototypeFunctionRemoveEventListener), (intptr_t)3 THUNK_GENERATOR(0) INTRINSIC(DFG::NoIntrinsic) },
 147     { "dispatchEvent", DontDelete | Function, (intptr_t)static_cast<NativeFunction>(jsTextTrackPrototypeFunctionDispatchEvent), (intptr_t)1 THUNK_GENERATOR(0) INTRINSIC(DFG::NoIntrinsic) },
 148     { 0, 0, 0, 0 THUNK_GENERATOR(0) INTRINSIC(DFG::NoIntrinsic) }
 149 };
 150
 151 #undef THUNK_GENERATOR
 152 static const HashTable JSTextTrackPrototypeTable = { 18, 15, JSTextTrackPrototypeTableValues, 0 };
 153 const ClassInfo JSTextTrackPrototype::s_info = { "TextTrackPrototype", &JSC::JSNonFinalObject::s_info, &JSTextTrackPrototypeTable, 0, CREATE_METHOD_TABLE(JSTextTrackPrototype) };
 154
 155 JSObject* JSTextTrackPrototype::self(ExecState* exec, JSGlobalObject* globalObject)
 156 {
 157     return getDOMPrototype<JSTextTrack>(exec, globalObject);
 158 }
 159
 160 bool JSTextTrackPrototype::getOwnPropertySlot(JSCell* cell, ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
 161 {
 162     JSTextTrackPrototype* thisObject = jsCast<JSTextTrackPrototype*>(cell);
 163     return getStaticPropertySlot<JSTextTrackPrototype, JSObject>(exec, &JSTextTrackPrototypeTable, thisObject, propertyName, slot);
 164 }
 165
 166 bool JSTextTrackPrototype::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
 167 {
 168     JSTextTrackPrototype* thisObject = jsCast<JSTextTrackPrototype*>(object);
 169     return getStaticPropertyDescriptor<JSTextTrackPrototype, JSObject>(exec, &JSTextTrackPrototypeTable, thisObject, propertyName, descriptor);
 170 }
 171
 172 const ClassInfo JSTextTrack::s_info = { "TextTrack", &JSDOMWrapper::s_info, &JSTextTrackTable, 0 , CREATE_METHOD_TABLE(JSTextTrack) };
 173
 174 JSTextTrack::JSTextTrack(Structure* structure, JSDOMGlobalObject* globalObject, PassRefPtr<TextTrack> impl)
 175     : JSDOMWrapper(structure, globalObject)
 176     , m_impl(impl.leakRef())
 177 {
 178 }
 179
 180 void JSTextTrack::finishCreation(JSGlobalData& globalData)
 181 {
 182     Base::finishCreation(globalData);
 183     ASSERT(inherits(&s_info));
 184 }
 185
 186 JSObject* JSTextTrack::createPrototype(ExecState* exec, JSGlobalObject* globalObject)
 187 {
 188     return JSTextTrackPrototype::create(exec->globalData(), globalObject, JSTextTrackPrototype::createStructure(globalObject->globalData(), globalObject, globalObject->objectPrototype()));
 189 }
 190
 191 bool JSTextTrack::getOwnPropertySlot(JSCell* cell, ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
 192 {
 193     JSTextTrack* thisObject = jsCast<JSTextTrack*>(cell);
 194     ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info);
 195     return getStaticValueSlot<JSTextTrack, Base>(exec, &JSTextTrackTable, thisObject, propertyName, slot);
 196 }
 197
 198 bool JSTextTrack::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
 199 {
 200     JSTextTrack* thisObject = jsCast<JSTextTrack*>(object);
 201     ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info);
 202     return getStaticValueDescriptor<JSTextTrack, Base>(exec, &JSTextTrackTable, thisObject, propertyName, descriptor);
 203 }
 204
 205 JSValue jsTextTrackKind(ExecState* exec, JSValue slotBase, const Identifier&)
 206 {
 207     JSTextTrack* castedThis = static_cast<JSTextTrack*>(asObject(slotBase));
 208     UNUSED_PARAM(exec);
 209     TextTrack* imp = static_cast<TextTrack*>(castedThis->impl());
 210     JSValue result = jsString(exec, imp->kind());
 211     return result;
 212 }
 213
 214
 215 JSValue jsTextTrackLabel(ExecState* exec, JSValue slotBase, const Identifier&)
 216 {
 217     JSTextTrack* castedThis = static_cast<JSTextTrack*>(asObject(slotBase));
 218     UNUSED_PARAM(exec);
 219     TextTrack* imp = static_cast<TextTrack*>(castedThis->impl());
 220     JSValue result = jsString(exec, imp->label());
 221     return result;
 222 }
 223
 224
 225 JSValue jsTextTrackLanguage(ExecState* exec, JSValue slotBase, const Identifier&)
 226 {
 227     JSTextTrack* castedThis = static_cast<JSTextTrack*>(asObject(slotBase));
 228     UNUSED_PARAM(exec);
 229     TextTrack* imp = static_cast<TextTrack*>(castedThis->impl());
 230     JSValue result = jsString(exec, imp->language());
 231     return result;
 232 }
 233
 234
 235 JSValue jsTextTrackMode(ExecState* exec, JSValue slotBase, const Identifier&)
 236 {
 237     JSTextTrack* castedThis = static_cast<JSTextTrack*>(asObject(slotBase));
 238     UNUSED_PARAM(exec);
 239     TextTrack* imp = static_cast<TextTrack*>(castedThis->impl());
 240     JSValue result = jsNumber(imp->mode());
 241     return result;
 242 }
 243
 244
 245 JSValue jsTextTrackCues(ExecState* exec, JSValue slotBase, const Identifier&)
 246 {
 247     JSTextTrack* castedThis = static_cast<JSTextTrack*>(asObject(slotBase));
 248     UNUSED_PARAM(exec);
 249     TextTrack* imp = static_cast<TextTrack*>(castedThis->impl());
 250     JSValue result = toJS(exec, castedThis->globalObject(), WTF::getPtr(imp->cues()));
 251     return result;
 252 }
 253
 254
 255 JSValue jsTextTrackActiveCues(ExecState* exec, JSValue slotBase, const Identifier&)
 256 {
 257     JSTextTrack* castedThis = static_cast<JSTextTrack*>(asObject(slotBase));
 258     UNUSED_PARAM(exec);
 259     TextTrack* imp = static_cast<TextTrack*>(castedThis->impl());
 260     JSValue result = toJS(exec, castedThis->globalObject(), WTF::getPtr(imp->activeCues()));
 261     return result;
 262 }
 263
 264
 265 JSValue jsTextTrackOncuechange(ExecState* exec, JSValue slotBase, const Identifier&)
 266 {
 267     JSTextTrack* castedThis = static_cast<JSTextTrack*>(asObject(slotBase));
 268     UNUSED_PARAM(exec);
 269     TextTrack* imp = static_cast<TextTrack*>(castedThis->impl());
 270     if (EventListener* listener = imp->oncuechange()) {
 271         if (const JSEventListener* jsListener = JSEventListener::cast(listener)) {
 272             if (JSObject* jsFunction = jsListener->jsFunction(imp->scriptExecutionContext()))
 273                 return jsFunction;
 274         }
 275     }
 276     return jsNull();
 277 }
 278
 279
 280 JSValue jsTextTrackConstructor(ExecState* exec, JSValue slotBase, const Identifier&)
 281 {
 282     JSTextTrack* domObject = static_cast<JSTextTrack*>(asObject(slotBase));
 283     return JSTextTrack::getConstructor(exec, domObject->globalObject());
 284 }
 285
 286 void JSTextTrack::put(JSCell* cell, ExecState* exec, const Identifier& propertyName, JSValue value, PutPropertySlot& slot)
 287 {
 288     JSTextTrack* thisObject = jsCast<JSTextTrack*>(cell);
 289     ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info);
 290     lookupPut<JSTextTrack, Base>(exec, propertyName, value, &JSTextTrackTable, thisObject, slot);
 291 }
 292
 293 void setJSTextTrackMode(ExecState* exec, JSObject* thisObject, JSValue value)
 294 {
 295     JSTextTrack* castedThis = static_cast<JSTextTrack*>(thisObject);
 296     TextTrack* imp = static_cast<TextTrack*>(castedThis->impl());
 297     ExceptionCode ec = 0;
 298     imp->setMode(value.toUInt32(exec), ec);
 299     setDOMException(exec, ec);
 300 }
 301
 302
 303 void setJSTextTrackOncuechange(ExecState* exec, JSObject* thisObject, JSValue value)
 304 {
 305     UNUSED_PARAM(exec);
 306     JSTextTrack* castedThis = static_cast<JSTextTrack*>(thisObject);
 307     TextTrack* imp = static_cast<TextTrack*>(castedThis->impl());
 308     imp->setOncuechange(createJSAttributeEventListener(exec, value, thisObject));
 309 }
 310
 311
 312 JSValue JSTextTrack::getConstructor(ExecState* exec, JSGlobalObject* globalObject)
 313 {
 314     return getDOMConstructor<JSTextTrackConstructor>(exec, static_cast<JSDOMGlobalObject*>(globalObject));
 315 }
 316
 317 EncodedJSValue JSC_HOST_CALL jsTextTrackPrototypeFunctionAddCue(ExecState* exec)
 318 {
 319     JSValue thisValue = exec->hostThisValue();
 320     if (!thisValue.inherits(&JSTextTrack::s_info))
 321         return throwVMTypeError(exec);
 322     JSTextTrack* castedThis = static_cast<JSTextTrack*>(asObject(thisValue));
 323     ASSERT_GC_OBJECT_INHERITS(castedThis, &JSTextTrack::s_info);
 324     TextTrack* imp = static_cast<TextTrack*>(castedThis->impl());
 325     if (exec->argumentCount() < 1)
 326         return throwVMError(exec, createTypeError(exec, "Not enough arguments"));
 327     ExceptionCode ec = 0;
 328     TextTrackCue* cue(toTextTrackCue(MAYBE_MISSING_PARAMETER(exec, 0, MissingIsUndefined)));
 329     if (exec->hadException())
 330         return JSValue::encode(jsUndefined());
 331     imp->addCue(cue, ec);
 332     setDOMException(exec, ec);
 333     return JSValue::encode(jsUndefined());
 334 }
 335
 336 EncodedJSValue JSC_HOST_CALL jsTextTrackPrototypeFunctionRemoveCue(ExecState* exec)
 337 {
 338     JSValue thisValue = exec->hostThisValue();
 339     if (!thisValue.inherits(&JSTextTrack::s_info))
 340         return throwVMTypeError(exec);
 341     JSTextTrack* castedThis = static_cast<JSTextTrack*>(asObject(thisValue));
 342     ASSERT_GC_OBJECT_INHERITS(castedThis, &JSTextTrack::s_info);
 343     TextTrack* imp = static_cast<TextTrack*>(castedThis->impl());
 344     if (exec->argumentCount() < 1)
 345         return throwVMError(exec, createTypeError(exec, "Not enough arguments"));
 346     ExceptionCode ec = 0;
 347     TextTrackCue* cue(toTextTrackCue(MAYBE_MISSING_PARAMETER(exec, 0, MissingIsUndefined)));
 348     if (exec->hadException())
 349         return JSValue::encode(jsUndefined());
 350     imp->removeCue(cue, ec);
 351     setDOMException(exec, ec);
 352     return JSValue::encode(jsUndefined());
 353 }
 354
 355 EncodedJSValue JSC_HOST_CALL jsTextTrackPrototypeFunctionAddEventListener(ExecState* exec)
 356 {
 357     JSValue thisValue = exec->hostThisValue();
 358     if (!thisValue.inherits(&JSTextTrack::s_info))
 359         return throwVMTypeError(exec);
 360     JSTextTrack* castedThis = static_cast<JSTextTrack*>(asObject(thisValue));
 361     ASSERT_GC_OBJECT_INHERITS(castedThis, &JSTextTrack::s_info);
 362     TextTrack* imp = static_cast<TextTrack*>(castedThis->impl());
 363     if (exec->argumentCount() < 2)
 364         return throwVMError(exec, createTypeError(exec, "Not enough arguments"));
 365     JSValue listener = exec->argument(1);
 366     if (!listener.isObject())
 367         return JSValue::encode(jsUndefined());
 368     imp->addEventListener(ustringToAtomicString(exec->argument(0).toString(exec)), JSEventListener::create(asObject(listener), castedThis, false, currentWorld(exec)), exec->argument(2).toBoolean(exec));
 369     return JSValue::encode(jsUndefined());
 370 }
 371
 372 EncodedJSValue JSC_HOST_CALL jsTextTrackPrototypeFunctionRemoveEventListener(ExecState* exec)
 373 {
 374     JSValue thisValue = exec->hostThisValue();
 375     if (!thisValue.inherits(&JSTextTrack::s_info))
 376         return throwVMTypeError(exec);
 377     JSTextTrack* castedThis = static_cast<JSTextTrack*>(asObject(thisValue));
 378     ASSERT_GC_OBJECT_INHERITS(castedThis, &JSTextTrack::s_info);
 379     TextTrack* imp = static_cast<TextTrack*>(castedThis->impl());
 380     if (exec->argumentCount() < 2)
 381         return throwVMError(exec, createTypeError(exec, "Not enough arguments"));
 382     JSValue listener = exec->argument(1);
 383     if (!listener.isObject())
 384         return JSValue::encode(jsUndefined());
 385     imp->removeEventListener(ustringToAtomicString(exec->argument(0).toString(exec)), JSEventListener::create(asObject(listener), castedThis, false, currentWorld(exec)).get(), exec->argument(2).toBoolean(exec));
 386     return JSValue::encode(jsUndefined());
 387 }
 388
 389 EncodedJSValue JSC_HOST_CALL jsTextTrackPrototypeFunctionDispatchEvent(ExecState* exec)
 390 {
 391     JSValue thisValue = exec->hostThisValue();
 392     if (!thisValue.inherits(&JSTextTrack::s_info))
 393         return throwVMTypeError(exec);
 394     JSTextTrack* castedThis = static_cast<JSTextTrack*>(asObject(thisValue));
 395     ASSERT_GC_OBJECT_INHERITS(castedThis, &JSTextTrack::s_info);
 396     TextTrack* imp = static_cast<TextTrack*>(castedThis->impl());
 397     if (exec->argumentCount() < 1)
 398         return throwVMError(exec, createTypeError(exec, "Not enough arguments"));
 399     ExceptionCode ec = 0;
 400     Event* evt(toEvent(MAYBE_MISSING_PARAMETER(exec, 0, MissingIsUndefined)));
 401     if (exec->hadException())
 402         return JSValue::encode(jsUndefined());
 403
 404     JSC::JSValue result = jsBoolean(imp->dispatchEvent(evt, ec));
 405     setDOMException(exec, ec);
 406     return JSValue::encode(result);
 407 }
 408
 409 void JSTextTrack::visitChildren(JSCell* cell, SlotVisitor& visitor)
 410 {
 411     JSTextTrack* thisObject = jsCast<JSTextTrack*>(cell);
 412     ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info);
 413     COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
 414     ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren());
 415     Base::visitChildren(thisObject, visitor);
 416     thisObject->impl()->visitJSEventListeners(visitor);
 417 }
 418
 419 // Constant getters
 420
 421 JSValue jsTextTrackDISABLED(ExecState* exec, JSValue, const Identifier&)
 422 {
 423     UNUSED_PARAM(exec);
 424     return jsNumber(static_cast<int>(0));
 425 }
 426
 427 JSValue jsTextTrackHIDDEN(ExecState* exec, JSValue, const Identifier&)
 428 {
 429     UNUSED_PARAM(exec);
 430     return jsNumber(static_cast<int>(1));
 431 }
 432
 433 JSValue jsTextTrackSHOWING(ExecState* exec, JSValue, const Identifier&)
 434 {
 435     UNUSED_PARAM(exec);
 436     return jsNumber(static_cast<int>(2));
 437 }
 438
 439 static inline bool isObservable(JSTextTrack* jsTextTrack)
 440 {
 441     if (jsTextTrack->hasCustomProperties())
 442         return true;
 443     if (jsTextTrack->impl()->hasEventListeners())
 444         return true;
 445     return false;
 446 }
 447
 448 bool JSTextTrackOwner::isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown> handle, void*, SlotVisitor& visitor)
 449 {
 450     JSTextTrack* jsTextTrack = static_cast<JSTextTrack*>(handle.get().asCell());
 451     if (!isObservable(jsTextTrack))
 452         return false;
 453     UNUSED_PARAM(visitor);
 454     return false;
 455 }
 456
 457 void JSTextTrackOwner::finalize(JSC::Handle<JSC::Unknown> handle, void* context)
 458 {
 459     JSTextTrack* jsTextTrack = static_cast<JSTextTrack*>(handle.get().asCell());
 460     DOMWrapperWorld* world = static_cast<DOMWrapperWorld*>(context);
 461     uncacheWrapper(world, jsTextTrack->impl(), jsTextTrack);
 462     jsTextTrack->releaseImpl();
 463 }
 464
 465 JSC::JSValue toJS(JSC::ExecState* exec, JSDOMGlobalObject* globalObject, TextTrack* impl)
 466 {
 467     return wrap<JSTextTrack>(exec, globalObject, impl);
 468 }
 469
 470 TextTrack* toTextTrack(JSC::JSValue value)
 471 {
 472     return value.inherits(&JSTextTrack::s_info) ? static_cast<JSTextTrack*>(asObject(value))->impl() : 0;
 473 }
 474
 475 }
 476
 477 #endif // ENABLE(VIDEO_TRACK)