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// Copyright (C) 2024 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "statecontroller.h"
StateController::StateController(QObject *parent)
: QObject{parent}
{}
StateController *StateController::instance()
{
if (!s_instance)
s_instance = new StateController;
return s_instance;
}
void StateController::setDirty(bool dirty)
{
switch (currentState()) {
case InitState:
if (dirty)
setCurrentState(NewState);
break;
case NewState:
if (!dirty)
setCurrentState(InitState);
break;
case OpenState:
if (dirty)
setCurrentState(DirtyState);
break;
case DirtyState:
if (!dirty)
setCurrentState(OpenState);
break;
default:
break;
}
}
void StateController::changesSaved(const QString &filePath)
{
switch (currentState()) {
case NewState:
case DirtyState:
if (!filePath.isNull())
setFilePath(filePath);
setCurrentState(OpenState);
break;
default:
break;
}
}
void StateController::fileLoaded(const QString &filePath)
{
switch (currentState()) {
case InitState:
setFilePath(filePath);
setCurrentState(OpenState);
break;
case OpenState:
setFilePath(filePath);
emit stateChanged(OpenState, OpenState);
break;
default:
break;
}
}
void StateController::fileClosed()
{
switch (currentState()) {
case OpenState:
setFilePath();
setCurrentState(InitState);
break;
default:
break;
}
}
void StateController::setCurrentState(State state)
{
const State old = currentState();
if (old == state)
return;
m_currentState = state;
emit stateChanged(old, state);
}
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