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/*
* Copyright (C) 1999 Harri Porten (porten@kde.org)
* Copyright (C) 2001 Peter Kelly (pmk@post.com)
* Copyright (C) 2008, 2016 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
*/
#ifndef ScriptController_h
#define ScriptController_h
#include "FrameLoaderTypes.h"
#include "JSDOMWindowShell.h"
#include <JavaScriptCore/JSBase.h>
#include <heap/Strong.h>
#include <wtf/Forward.h>
#include <wtf/RefPtr.h>
#include <wtf/text/TextPosition.h>
#if PLATFORM(COCOA)
#include <wtf/RetainPtr.h>
OBJC_CLASS JSContext;
OBJC_CLASS WebScriptObject;
#endif
struct NPObject;
namespace Deprecated {
class ScriptValue;
}
namespace JSC {
class JSGlobalObject;
class ExecState;
namespace Bindings {
class Instance;
class RootObject;
}
}
namespace WebCore {
class Frame;
class HTMLDocument;
class HTMLPlugInElement;
class ScriptSourceCode;
class SecurityOrigin;
class Widget;
typedef HashMap<void*, RefPtr<JSC::Bindings::RootObject>> RootObjectMap;
enum ReasonForCallingCanExecuteScripts {
AboutToExecuteScript,
NotAboutToExecuteScript
};
class ScriptController {
WTF_MAKE_FAST_ALLOCATED;
typedef HashMap<RefPtr<DOMWrapperWorld>, JSC::Strong<JSDOMWindowShell>> ShellMap;
public:
explicit ScriptController(Frame&);
~ScriptController();
WEBCORE_EXPORT static Ref<DOMWrapperWorld> createWorld();
JSDOMWindowShell* createWindowShell(DOMWrapperWorld&);
void destroyWindowShell(DOMWrapperWorld&);
Vector<JSC::Strong<JSDOMWindowShell>> windowShells();
JSDOMWindowShell* windowShell(DOMWrapperWorld& world)
{
ShellMap::iterator iter = m_windowShells.find(&world);
return (iter != m_windowShells.end()) ? iter->value.get() : initScript(world);
}
JSDOMWindowShell* existingWindowShell(DOMWrapperWorld& world) const
{
ShellMap::const_iterator iter = m_windowShells.find(&world);
return (iter != m_windowShells.end()) ? iter->value.get() : 0;
}
JSDOMWindow* globalObject(DOMWrapperWorld& world)
{
return windowShell(world)->window();
}
static void getAllWorlds(Vector<Ref<DOMWrapperWorld>>&);
Deprecated::ScriptValue executeScript(const ScriptSourceCode&, ExceptionDetails* = nullptr);
WEBCORE_EXPORT Deprecated::ScriptValue executeScript(const String& script, bool forceUserGesture = false, ExceptionDetails* = nullptr);
WEBCORE_EXPORT Deprecated::ScriptValue executeScriptInWorld(DOMWrapperWorld&, const String& script, bool forceUserGesture = false);
// Returns true if argument is a JavaScript URL.
bool executeIfJavaScriptURL(const URL&, ShouldReplaceDocumentIfJavaScriptURL shouldReplaceDocumentIfJavaScriptURL = ReplaceDocumentIfJavaScriptURL);
// This function must be called from the main thread. It is safe to call it repeatedly.
// Darwin is an exception to this rule: it is OK to call this function from any thread, even reentrantly.
static void initializeThreading();
Deprecated::ScriptValue evaluate(const ScriptSourceCode&, ExceptionDetails* = nullptr);
Deprecated::ScriptValue evaluateInWorld(const ScriptSourceCode&, DOMWrapperWorld&, ExceptionDetails* = nullptr);
WTF::TextPosition eventHandlerPosition() const;
void enableEval();
void disableEval(const String& errorMessage);
WEBCORE_EXPORT static bool processingUserGesture();
WEBCORE_EXPORT static bool processingUserGestureForMedia();
static bool canAccessFromCurrentOrigin(Frame*);
WEBCORE_EXPORT bool canExecuteScripts(ReasonForCallingCanExecuteScripts);
// Debugger can be 0 to detach any existing Debugger.
void attachDebugger(JSC::Debugger*); // Attaches/detaches in all worlds/window shells.
void attachDebugger(JSDOMWindowShell*, JSC::Debugger*);
void setPaused(bool b) { m_paused = b; }
bool isPaused() const { return m_paused; }
const String* sourceURL() const { return m_sourceURL; } // 0 if we are not evaluating any script
void clearWindowShellsNotMatchingDOMWindow(DOMWindow* newDOMWindow, bool goingIntoPageCache);
void setDOMWindowForWindowShell(DOMWindow* newDOMWindow);
void updateDocument();
void namedItemAdded(HTMLDocument*, const AtomicString&) { }
void namedItemRemoved(HTMLDocument*, const AtomicString&) { }
void clearScriptObjects();
WEBCORE_EXPORT void cleanupScriptObjectsForPlugin(void*);
void updatePlatformScriptObjects();
RefPtr<JSC::Bindings::Instance> createScriptInstanceForWidget(Widget*);
JSC::Bindings::RootObject* bindingRootObject();
JSC::Bindings::RootObject* cacheableBindingRootObject();
WEBCORE_EXPORT RefPtr<JSC::Bindings::RootObject> createRootObject(void* nativeHandle);
void collectIsolatedContexts(Vector<std::pair<JSC::ExecState*, SecurityOrigin*>>&);
#if PLATFORM(COCOA)
WEBCORE_EXPORT WebScriptObject* windowScriptObject();
WEBCORE_EXPORT JSContext *javaScriptContext();
#endif
WEBCORE_EXPORT JSC::JSObject* jsObjectForPluginElement(HTMLPlugInElement*);
#if ENABLE(NETSCAPE_PLUGIN_API)
NPObject* createScriptObjectForPluginElement(HTMLPlugInElement*);
WEBCORE_EXPORT NPObject* windowScriptNPObject();
#endif
private:
WEBCORE_EXPORT JSDOMWindowShell* initScript(DOMWrapperWorld&);
void disconnectPlatformScriptObjects();
ShellMap m_windowShells;
Frame& m_frame;
const String* m_sourceURL;
bool m_paused;
// 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 ENABLE(NETSCAPE_PLUGIN_API)
NPObject* m_windowScriptNPObject;
#endif
#if PLATFORM(COCOA)
RetainPtr<WebScriptObject> m_windowScriptObject;
#endif
};
} // namespace WebCore
#endif // ScriptController_h
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