#pragma once
#include "DOMWindowProperty.h"
#include "ExceptionOr.h"
#include "JSValueInWrappedObject.h"
#include "ScriptWrappable.h"
#include "SerializedScriptValue.h"
#include <wtf/WallTime.h>
namespace WebCore {
class Document;
class History final : public ScriptWrappable, public RefCounted<History>, public DOMWindowProperty {
WTF_MAKE_ISO_ALLOCATED(History);
public:
static Ref<History> create(DOMWindow& window) { return adoptRef(*new History(window)); }
unsigned length() const;
enum class ScrollRestoration {
Auto,
Manual
};
ExceptionOr<ScrollRestoration> scrollRestoration() const;
ExceptionOr<void> setScrollRestoration(ScrollRestoration);
SerializedScriptValue* state();
JSValueInWrappedObject& cachedState();
JSValueInWrappedObject& cachedStateForGC() { return m_cachedState; }
void back();
void forward();
void go(int);
void back(Document&);
void forward(Document&);
void go(Document&, int);
bool isSameAsCurrentState(SerializedScriptValue*) const;
ExceptionOr<void> pushState(RefPtr<SerializedScriptValue>&& data, const String& title, const String& urlString);
ExceptionOr<void> replaceState(RefPtr<SerializedScriptValue>&& data, const String& title, const String& urlString);
private:
explicit History(DOMWindow&);
enum class StateObjectType { Push, Replace };
ExceptionOr<void> stateObjectAdded(RefPtr<SerializedScriptValue>&&, const String& title, const String& url, StateObjectType);
bool stateChanged() const;
URL urlForState(const String& url);
SerializedScriptValue* stateInternal() const;
RefPtr<SerializedScriptValue> m_lastStateObjectRequested;
JSValueInWrappedObject m_cachedState;
unsigned m_currentStateObjectTimeSpanObjectsAdded { 0 };
WallTime m_currentStateObjectTimeSpanStart;
uint64_t m_totalStateObjectUsage { 0 };
uint64_t m_mostRecentStateObjectUsage { 0 };
};
inline ExceptionOr<void> History::pushState(RefPtr<SerializedScriptValue>&& data, const String& title, const String& urlString)
{
return stateObjectAdded(WTFMove(data), title, urlString, StateObjectType::Push);
}
inline ExceptionOr<void> History::replaceState(RefPtr<SerializedScriptValue>&& data, const String& title, const String& urlString)
{
return stateObjectAdded(WTFMove(data), title, urlString, StateObjectType::Replace);
}
}