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 "config.h" 6 #include "bindings/v8/ScriptState.h" 7 8 #include "bindings/v8/V8Binding.h" 9 #include "core/dom/ExecutionContext.h" 10 #include "core/frame/LocalFrame.h" 11 12 namespace WebCore { 13 14 PassRefPtr<ScriptState> ScriptState::create(v8::Handle<v8::Context> context, PassRefPtr<DOMWrapperWorld> world) 15 { 16 RefPtr<ScriptState> scriptState = adoptRef(new ScriptState(context, world)); 17 // This ref() is for keeping this ScriptState alive as long as the v8::Context is alive. 18 // This is deref()ed in the weak callback of the v8::Context. 19 scriptState->ref(); 20 return scriptState; 21 } 22 23 static void weakCallback(const v8::WeakCallbackData<v8::Context, ScriptState>& data) 24 { 25 data.GetValue()->SetAlignedPointerInEmbedderData(v8ContextPerContextDataIndex, 0); 26 data.GetParameter()->clearContext(); 27 data.GetParameter()->deref(); 28 } 29 30 ScriptState::ScriptState(v8::Handle<v8::Context> context, PassRefPtr<DOMWrapperWorld> world) 31 : m_isolate(context->GetIsolate()) 32 , m_context(m_isolate, context) 33 , m_world(world) 34 , m_perContextData(V8PerContextData::create(context)) 35 { 36 ASSERT(m_world); 37 m_context.setWeak(this, &weakCallback); 38 context->SetAlignedPointerInEmbedderData(v8ContextPerContextDataIndex, this); 39 } 40 41 ScriptState::~ScriptState() 42 { 43 ASSERT(!m_perContextData); 44 ASSERT(m_context.isEmpty()); 45 } 46 47 bool ScriptState::evalEnabled() const 48 { 49 v8::HandleScope handleScope(m_isolate); 50 return context()->IsCodeGenerationFromStringsAllowed(); 51 } 52 53 void ScriptState::setEvalEnabled(bool enabled) 54 { 55 v8::HandleScope handleScope(m_isolate); 56 return context()->AllowCodeGenerationFromStrings(enabled); 57 } 58 59 ScriptValue ScriptState::getFromGlobalObject(const char* name) 60 { 61 v8::HandleScope handleScope(m_isolate); 62 v8::Local<v8::Value> v8Value = context()->Global()->Get(v8AtomicString(isolate(), name)); 63 return ScriptValue(this, v8Value); 64 } 65 66 ExecutionContext* ScriptState::executionContext() const 67 { 68 v8::HandleScope scope(m_isolate); 69 return toExecutionContext(context()); 70 } 71 72 void ScriptState::setExecutionContext(ExecutionContext*) 73 { 74 ASSERT_NOT_REACHED(); 75 } 76 77 LocalDOMWindow* ScriptState::domWindow() const 78 { 79 v8::HandleScope scope(m_isolate); 80 return toDOMWindow(context()); 81 } 82 83 ScriptState* ScriptState::forMainWorld(LocalFrame* frame) 84 { 85 v8::Isolate* isolate = toIsolate(frame); 86 v8::HandleScope handleScope(isolate); 87 return ScriptState::from(toV8Context(frame, DOMWrapperWorld::mainWorld())); 88 } 89 90 PassRefPtr<ScriptStateForTesting> ScriptStateForTesting::create(v8::Handle<v8::Context> context, PassRefPtr<DOMWrapperWorld> world) 91 { 92 RefPtr<ScriptStateForTesting> scriptState = adoptRef(new ScriptStateForTesting(context, world)); 93 // This ref() is for keeping this ScriptState alive as long as the v8::Context is alive. 94 // This is deref()ed in the weak callback of the v8::Context. 95 scriptState->ref(); 96 return scriptState; 97 } 98 99 ScriptStateForTesting::ScriptStateForTesting(v8::Handle<v8::Context> context, PassRefPtr<DOMWrapperWorld> world) 100 : ScriptState(context, world) 101 { 102 } 103 104 ExecutionContext* ScriptStateForTesting::executionContext() const 105 { 106 return m_executionContext; 107 } 108 109 void ScriptStateForTesting::setExecutionContext(ExecutionContext* executionContext) 110 { 111 m_executionContext = executionContext; 112 } 113 114 } 115
