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ScriptController.h
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ScriptController.h
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/*
* Copyright (C) 1999 Harri Porten (porten@kde.org)
* Copyright (C) 2001 Peter Kelly (pmk@post.com)
* Copyright (C) 2008-2019 Apple Inc. All rights reserved.
* Copyright (C) 2008 Eric Seidel <eric@webkit.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#pragma once
#include "FrameLoaderTypes.h"
#include "JSWindowProxy.h"
#include "LoadableScript.h"
#include "SerializedScriptValue.h"
#include "WindowProxy.h"
#include <JavaScriptCore/JSBase.h>
#include <JavaScriptCore/ScriptFetchParameters.h>
#include <JavaScriptCore/Strong.h>
#include <wtf/Forward.h>
#include <wtf/RefPtr.h>
#include <wtf/WeakPtr.h>
#include <wtf/text/TextPosition.h>
#if PLATFORM(COCOA)
#include <wtf/RetainPtr.h>
OBJC_CLASS JSContext;
OBJC_CLASS WebScriptObject;
#endif
namespace JSC {
class AbstractModuleRecord;
class CallFrame;
class JSGlobalObject;
class JSInternalPromise;
namespace Bindings {
class Instance;
class RootObject;
}
}
namespace WebCore {
class CachedScriptFetcher;
class HTMLDocument;
class HTMLPlugInElement;
class LoadableModuleScript;
class LocalFrame;
class ModuleFetchParameters;
class ScriptSourceCode;
class SecurityOrigin;
class Widget;
enum class RunAsAsyncFunction : bool;
struct ExceptionDetails;
struct RunJavaScriptParameters;
enum class ReasonForCallingCanExecuteScripts : uint8_t {
AboutToCreateEventListener,
AboutToExecuteScript,
NotAboutToExecuteScript
};
using ValueOrException = Expected<JSC::JSValue, ExceptionDetails>;
class ScriptController : public CanMakeWeakPtr<ScriptController> {
WTF_MAKE_FAST_ALLOCATED;
using RootObjectMap = HashMap<void*, Ref<JSC::Bindings::RootObject>>;
public:
explicit ScriptController(LocalFrame&);
~ScriptController();
enum class WorldType { User, Internal };
WEBCORE_EXPORT static Ref<DOMWrapperWorld> createWorld(const String& name, WorldType = WorldType::Internal);
JSDOMGlobalObject* globalObject(DOMWrapperWorld& world)
{
return jsWindowProxy(world).window();
}
static void getAllWorlds(Vector<Ref<DOMWrapperWorld>>&);
using ResolveFunction = CompletionHandler<void(ValueOrException)>;
WEBCORE_EXPORT JSC::JSValue executeScriptIgnoringException(const String& script, bool forceUserGesture = false);
WEBCORE_EXPORT JSC::JSValue executeScriptInWorldIgnoringException(DOMWrapperWorld&, const String& script, bool forceUserGesture = false);
WEBCORE_EXPORT JSC::JSValue executeUserAgentScriptInWorldIgnoringException(DOMWrapperWorld&, const String& script, bool forceUserGesture);
WEBCORE_EXPORT ValueOrException executeUserAgentScriptInWorld(DOMWrapperWorld&, const String& script, bool forceUserGesture);
WEBCORE_EXPORT void executeAsynchronousUserAgentScriptInWorld(DOMWrapperWorld&, RunJavaScriptParameters&&, ResolveFunction&&);
ValueOrException evaluateInWorld(const ScriptSourceCode&, DOMWrapperWorld&);
JSC::JSValue evaluateIgnoringException(const ScriptSourceCode&);
JSC::JSValue evaluateInWorldIgnoringException(const ScriptSourceCode&, DOMWrapperWorld&);
// This asserts that URL argument is a JavaScript URL.
void executeJavaScriptURL(const URL&, RefPtr<SecurityOrigin>, ShouldReplaceDocumentIfJavaScriptURL, bool& didReplaceDocument);
void executeJavaScriptURL(const URL&, RefPtr<SecurityOrigin> = nullptr, ShouldReplaceDocumentIfJavaScriptURL = ReplaceDocumentIfJavaScriptURL);
static void initializeMainThread();
void loadModuleScriptInWorld(LoadableModuleScript&, const URL& topLevelModuleURL, Ref<JSC::ScriptFetchParameters>&&, DOMWrapperWorld&);
void loadModuleScript(LoadableModuleScript&, const URL&, Ref<JSC::ScriptFetchParameters>&&);
void loadModuleScriptInWorld(LoadableModuleScript&, const ScriptSourceCode&, DOMWrapperWorld&);
void loadModuleScript(LoadableModuleScript&, const ScriptSourceCode&);
JSC::JSValue linkAndEvaluateModuleScriptInWorld(LoadableModuleScript& , DOMWrapperWorld&);
JSC::JSValue linkAndEvaluateModuleScript(LoadableModuleScript&);
JSC::JSValue evaluateModule(const URL&, JSC::AbstractModuleRecord&, DOMWrapperWorld&, JSC::JSValue awaitedValue, JSC::JSValue resumeMode);
JSC::JSValue evaluateModule(const URL&, JSC::AbstractModuleRecord&, JSC::JSValue awaitedValue, JSC::JSValue resumeMode);
TextPosition eventHandlerPosition() const;
void setEvalEnabled(bool, const String& errorMessage = String());
void setWebAssemblyEnabled(bool, const String& errorMessage = String());
static bool canAccessFromCurrentOrigin(LocalFrame*, Document& accessingDocument);
WEBCORE_EXPORT bool canExecuteScripts(ReasonForCallingCanExecuteScripts);
void setPaused(bool b) { m_paused = b; }
bool isPaused() const { return m_paused; }
const URL* sourceURL() const { return m_sourceURL; } // nullptr if we are not evaluating any script
void updateDocument();
void namedItemAdded(HTMLDocument*, const AtomString&) { }
void namedItemRemoved(HTMLDocument*, const AtomString&) { }
void clearScriptObjects();
WEBCORE_EXPORT void cleanupScriptObjectsForPlugin(void*);
void updatePlatformScriptObjects();
RefPtr<JSC::Bindings::Instance> createScriptInstanceForWidget(Widget*);
WEBCORE_EXPORT JSC::Bindings::RootObject* bindingRootObject();
JSC::Bindings::RootObject* cacheableBindingRootObject();
JSC::Bindings::RootObject* existingCacheableBindingRootObject() const { return m_cacheableBindingRootObject.get(); }
WEBCORE_EXPORT Ref<JSC::Bindings::RootObject> createRootObject(void* nativeHandle);
void collectIsolatedContexts(Vector<std::pair<JSC::JSGlobalObject*, SecurityOrigin*>>&);
#if PLATFORM(COCOA)
WEBCORE_EXPORT WebScriptObject* windowScriptObject();
WEBCORE_EXPORT JSContext *javaScriptContext();
#endif
WEBCORE_EXPORT JSC::JSObject* jsObjectForPluginElement(HTMLPlugInElement*);
void initScriptForWindowProxy(JSWindowProxy&);
bool willReplaceWithResultOfExecutingJavascriptURL() const { return m_willReplaceWithResultOfExecutingJavascriptURL; }
void reportExceptionFromScriptError(LoadableScript::Error, bool);
void registerImportMap(const ScriptSourceCode&, const URL& baseURL);
bool isAcquiringImportMaps();
void setAcquiringImportMaps();
void setPendingImportMaps();
void clearPendingImportMaps();
private:
ValueOrException executeScriptInWorld(DOMWrapperWorld&, RunJavaScriptParameters&&);
ValueOrException callInWorld(RunJavaScriptParameters&&, DOMWrapperWorld&);
void setupModuleScriptHandlers(LoadableModuleScript&, JSC::JSInternalPromise&, DOMWrapperWorld&);
void disconnectPlatformScriptObjects();
WEBCORE_EXPORT WindowProxy& windowProxy();
WEBCORE_EXPORT JSWindowProxy& jsWindowProxy(DOMWrapperWorld&);
LocalFrame& m_frame;
const URL* m_sourceURL { nullptr };
bool m_paused;
bool m_willReplaceWithResultOfExecutingJavascriptURL { false };
// The root object used for objects bound outside the context of a plugin, such
// as NPAPI plugins. The plugins using these objects prevent a page from being cached so they
// are safe to invalidate() when WebKit navigates away from the page that contains them.
RefPtr<JSC::Bindings::RootObject> m_bindingRootObject;
// Unlike m_bindingRootObject these objects are used in pages that are cached, so they are not invalidate()'d.
// This ensures they are still available when the page is restored.
RefPtr<JSC::Bindings::RootObject> m_cacheableBindingRootObject;
RootObjectMap m_rootObjects;
#if PLATFORM(COCOA)
RetainPtr<WebScriptObject> m_windowScriptObject;
#endif
};
} // namespace WebCore