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#include "Precompiled.h"
#include "UndoManager.h"
#include "CommandManager.h"
#include "WidgetSelectorManager.h"
namespace tools
{
MYGUI_SINGLETON_DEFINITION(UndoManager);
const int UNDO_COUNT = 64;
UndoManager::UndoManager() :
mPosition(0),
mOperations(UNDO_COUNT),
mLastProperty(0),
mEditorWidgets(nullptr),
mUnsaved(false),
mSingletonHolder(this)
{
CommandManager::getInstance().getEvent("Command_Undo")->connect(this, &UndoManager::commandUndo);
CommandManager::getInstance().getEvent("Command_Redo")->connect(this, &UndoManager::commandRedo);
}
void UndoManager::initialise(EditorWidgets* _ew)
{
mPosition = 0;
mLastProperty = PR_DEFAULT;
mEditorWidgets = _ew;
UndoManager::getInstance().addValue();
setUnsaved(false);
}
void UndoManager::shutdown()
{
for (size_t i = 0; i < mOperations.GetSize(); i++)
{
delete mOperations[i];
}
mOperations.Clear();
}
void UndoManager::undo()
{
if (mPosition == mOperations.GetSize() - 1) return;
setUnsaved(true);
mPosition++;
mEditorWidgets->clear();
mEditorWidgets->loadxmlDocument(mOperations[mPosition]);
}
void UndoManager::redo()
{
if (mPosition == 0) return;
setUnsaved(true);
mPosition--;
mEditorWidgets->clear();
mEditorWidgets->loadxmlDocument(mOperations[mPosition]);
}
void UndoManager::addValue(int _property)
{
setUnsaved(true);
if ((_property != PR_DEFAULT) && (_property == mLastProperty))
{
delete mOperations.Front();
mOperations.PopFirst();
mOperations.Push( mEditorWidgets->savexmlDocument() );
return;
}
mLastProperty = _property;
if ( mPosition != 0 )
{
mLastProperty = PR_DEFAULT;
while (mPosition)
{
delete mOperations.Front();
mOperations.PopFirst();
mPosition--;
}
}
if ( mOperations.IsFull() ) delete mOperations.Back();
mOperations.Push( mEditorWidgets->savexmlDocument() );
mPosition = 0;
}
void UndoManager::commandUndo(const MyGUI::UString& _commandName, bool& _result)
{
undo();
WidgetSelectorManager::getInstance().setSelectedWidget(nullptr);
_result = true;
}
void UndoManager::commandRedo(const MyGUI::UString& _commandName, bool& _result)
{
redo();
WidgetSelectorManager::getInstance().setSelectedWidget(nullptr);
_result = true;
}
void UndoManager::setUnsaved(bool _value)
{
if (mUnsaved != _value)
{
mUnsaved = _value;
eventChanges(mUnsaved);
}
}
}
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