1 /*
2 * Copyright (C) 2009, 2011 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "config.h"
32 #include "bindings/v8/ScriptState.h"
33
34 #include "V8Window.h"
35 #include "V8WorkerGlobalScope.h"
36 #include "bindings/v8/ScriptController.h"
37 #include "bindings/v8/V8HiddenPropertyName.h"
38 #include "bindings/v8/WorkerScriptController.h"
39 #include "core/frame/Frame.h"
40 #include "core/workers/WorkerGlobalScope.h"
41 #include <v8.h>
42 #include "wtf/Assertions.h"
43
44 namespace WebCore {
45
ScriptState(v8::Handle<v8::Context> context)46 ScriptState::ScriptState(v8::Handle<v8::Context> context)
47 : m_context(context->GetIsolate(), context)
48 , m_isolate(context->GetIsolate())
49 {
50 m_context.setWeak(this, &setWeakCallback);
51 }
52
~ScriptState()53 ScriptState::~ScriptState()
54 {
55 }
56
domWindow() const57 DOMWindow* ScriptState::domWindow() const
58 {
59 v8::HandleScope handleScope(m_isolate);
60 return toDOMWindow(m_context.newLocal(m_isolate));
61 }
62
executionContext() const63 ExecutionContext* ScriptState::executionContext() const
64 {
65 v8::HandleScope handleScope(m_isolate);
66 return toExecutionContext(m_context.newLocal(m_isolate));
67 }
68
forContext(v8::Handle<v8::Context> context)69 ScriptState* ScriptState::forContext(v8::Handle<v8::Context> context)
70 {
71 v8::Context::Scope contextScope(context);
72
73 v8::Local<v8::Object> innerGlobal = v8::Local<v8::Object>::Cast(context->Global()->GetPrototype());
74
75 v8::Local<v8::Value> scriptStateWrapper = innerGlobal->GetHiddenValue(V8HiddenPropertyName::scriptState(context->GetIsolate()));
76 if (!scriptStateWrapper.IsEmpty() && scriptStateWrapper->IsExternal())
77 return static_cast<ScriptState*>(v8::External::Cast(*scriptStateWrapper)->Value());
78
79 ScriptState* scriptState = new ScriptState(context);
80 innerGlobal->SetHiddenValue(V8HiddenPropertyName::scriptState(context->GetIsolate()), v8::External::New(context->GetIsolate(), scriptState));
81 return scriptState;
82 }
83
current()84 ScriptState* ScriptState::current()
85 {
86 v8::Isolate* isolate = v8::Isolate::GetCurrent();
87 v8::HandleScope handleScope(isolate);
88 v8::Local<v8::Context> context = isolate->GetCurrentContext();
89 ASSERT(!context.IsEmpty());
90 return ScriptState::forContext(context);
91 }
92
setWeakCallback(const v8::WeakCallbackData<v8::Context,ScriptState> & data)93 void ScriptState::setWeakCallback(const v8::WeakCallbackData<v8::Context, ScriptState>& data)
94 {
95 delete data.GetParameter();
96 }
97
evalEnabled() const98 bool ScriptState::evalEnabled() const
99 {
100 v8::HandleScope handleScope(m_isolate);
101 return context()->IsCodeGenerationFromStringsAllowed();
102 }
103
setEvalEnabled(bool enabled)104 void ScriptState::setEvalEnabled(bool enabled)
105 {
106 v8::HandleScope handleScope(m_isolate);
107 return context()->AllowCodeGenerationFromStrings(enabled);
108 }
109
mainWorldScriptState(Frame * frame)110 ScriptState* mainWorldScriptState(Frame* frame)
111 {
112 v8::HandleScope handleScope(toIsolate(frame));
113 return ScriptState::forContext(frame->script().mainWorldContext());
114 }
115
scriptStateFromWorkerGlobalScope(WorkerGlobalScope * workerGlobalScope)116 ScriptState* scriptStateFromWorkerGlobalScope(WorkerGlobalScope* workerGlobalScope)
117 {
118 WorkerScriptController* script = workerGlobalScope->script();
119 if (!script)
120 return 0;
121
122 v8::HandleScope handleScope(script->isolate());
123 return ScriptState::forContext(script->context());
124 }
125
126 }
127