/*
* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
* its licensors.
*
* For complete copyright and license terms please see the LICENSE at the root of this
* distribution (the "License"). All use of this software is governed by the License,
* or, if provided, by the license below or the license accompanying this file. Do not
* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*
*/

#include "AzToolsFramework_precompiled.h"
#include "SelectionCommand.h"
#include <AzToolsFramework/API/ToolsApplicationAPI.h>

namespace AzToolsFramework
{
    SelectionCommand::SelectionCommand(const AZStd::vector<AZ::EntityId>& proposedSelection, const AZStd::string& friendlyName)
        : UndoSystem::URSequencePoint(friendlyName)
    {
        EBUS_EVENT_RESULT(m_previousSelectionList, AzToolsFramework::ToolsApplicationRequests::Bus, GetSelectedEntities);

        m_proposedSelectionList = proposedSelection;
    }

    const AZStd::vector<AZ::EntityId>& SelectionCommand::GetInitialSelectionList() const
    {
        return m_previousSelectionList;
    }

    void SelectionCommand::UpdateSelection(const EntityIdList& proposedSelection)
    {
        if (m_proposedSelectionList != proposedSelection)
        {
            m_proposedSelectionList = proposedSelection;
        }
    }

    void SelectionCommand::Post()
    {
        UndoSystem::UndoStack* undoStack = NULL;
        EBUS_EVENT_RESULT(undoStack, AzToolsFramework::ToolsApplicationRequests::Bus, GetUndoStack);

        if (undoStack)
        {
            undoStack->Post(this);
        }
    }

    void SelectionCommand::Undo()
    {
        EBUS_EVENT(AzToolsFramework::ToolsApplicationRequests::Bus, SetSelectedEntities, m_previousSelectionList);
    }

    void SelectionCommand::Redo()
    {
        EBUS_EVENT(AzToolsFramework::ToolsApplicationRequests::Bus, SetSelectedEntities, m_proposedSelectionList);
    }
}