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/core/v8/ScriptState.h"
7
8 #include "bindings/core/v8/V8Binding.h"
9 #include "core/dom/ExecutionContext.h"
10 #include "core/frame/LocalFrame.h"
11
12 namespace blink {
13
create(v8::Handle<v8::Context> context,PassRefPtr<DOMWrapperWorld> world)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
weakCallback(const v8::WeakCallbackData<v8::Context,ScriptState> & data)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
ScriptState(v8::Handle<v8::Context> context,PassRefPtr<DOMWrapperWorld> world)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 , m_globalObjectDetached(false)
36 {
37 ASSERT(m_world);
38 m_context.setWeak(this, &weakCallback);
39 context->SetAlignedPointerInEmbedderData(v8ContextPerContextDataIndex, this);
40 }
41
~ScriptState()42 ScriptState::~ScriptState()
43 {
44 ASSERT(!m_perContextData);
45 ASSERT(m_context.isEmpty());
46 }
47
detachGlobalObject()48 void ScriptState::detachGlobalObject()
49 {
50 ASSERT(!m_context.isEmpty());
51 context()->DetachGlobal();
52 m_globalObjectDetached = true;
53 }
54
evalEnabled() const55 bool ScriptState::evalEnabled() const
56 {
57 v8::HandleScope handleScope(m_isolate);
58 return context()->IsCodeGenerationFromStringsAllowed();
59 }
60
setEvalEnabled(bool enabled)61 void ScriptState::setEvalEnabled(bool enabled)
62 {
63 v8::HandleScope handleScope(m_isolate);
64 return context()->AllowCodeGenerationFromStrings(enabled);
65 }
66
getFromGlobalObject(const char * name)67 ScriptValue ScriptState::getFromGlobalObject(const char* name)
68 {
69 v8::HandleScope handleScope(m_isolate);
70 v8::Local<v8::Value> v8Value = context()->Global()->Get(v8AtomicString(isolate(), name));
71 return ScriptValue(this, v8Value);
72 }
73
executionContext() const74 ExecutionContext* ScriptState::executionContext() const
75 {
76 v8::HandleScope scope(m_isolate);
77 return toExecutionContext(context());
78 }
79
setExecutionContext(ExecutionContext *)80 void ScriptState::setExecutionContext(ExecutionContext*)
81 {
82 ASSERT_NOT_REACHED();
83 }
84
domWindow() const85 LocalDOMWindow* ScriptState::domWindow() const
86 {
87 v8::HandleScope scope(m_isolate);
88 return toDOMWindow(context());
89 }
90
forMainWorld(LocalFrame * frame)91 ScriptState* ScriptState::forMainWorld(LocalFrame* frame)
92 {
93 v8::Isolate* isolate = toIsolate(frame);
94 v8::HandleScope handleScope(isolate);
95 return ScriptState::from(toV8Context(frame, DOMWrapperWorld::mainWorld()));
96 }
97
create(v8::Handle<v8::Context> context,PassRefPtr<DOMWrapperWorld> world)98 PassRefPtr<ScriptStateForTesting> ScriptStateForTesting::create(v8::Handle<v8::Context> context, PassRefPtr<DOMWrapperWorld> world)
99 {
100 RefPtr<ScriptStateForTesting> scriptState = adoptRef(new ScriptStateForTesting(context, world));
101 // This ref() is for keeping this ScriptState alive as long as the v8::Context is alive.
102 // This is deref()ed in the weak callback of the v8::Context.
103 scriptState->ref();
104 return scriptState;
105 }
106
ScriptStateForTesting(v8::Handle<v8::Context> context,PassRefPtr<DOMWrapperWorld> world)107 ScriptStateForTesting::ScriptStateForTesting(v8::Handle<v8::Context> context, PassRefPtr<DOMWrapperWorld> world)
108 : ScriptState(context, world)
109 {
110 }
111
executionContext() const112 ExecutionContext* ScriptStateForTesting::executionContext() const
113 {
114 return m_executionContext;
115 }
116
setExecutionContext(ExecutionContext * executionContext)117 void ScriptStateForTesting::setExecutionContext(ExecutionContext* executionContext)
118 {
119 m_executionContext = executionContext;
120 }
121
122 }
123