/*
* 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.
*
*/
// Original file Copyright Crytek GMBH or its affiliates, used under license.

// Description : This file declares a control which objective is to display
//               multiple assets allowing selection and preview of such things
//               It also handles scrolling and changes in the thumbnail display size


#ifndef CRYINCLUDE_EDITOR_INCLUDE_IASSETVIEWER_H
#define CRYINCLUDE_EDITOR_INCLUDE_IASSETVIEWER_H
#pragma once
#include "IObservable.h"
#include "IAssetItemDatabase.h"

struct IAssetItem;
struct IAssetItemDatabase;

// Description:
//  Observer for the asset viewer events
struct IAssetViewerObserver
{
    virtual void OnChangeStatusBarInfo(UINT nSelectedItems, UINT nVisibleItems, UINT nTotalItems) {};
    virtual void OnSelectionChanged() {};
    virtual void OnChangedPreviewedAsset(IAssetItem* pAsset) {};
    virtual void OnAssetDblClick(IAssetItem* pAsset) {};
    virtual void OnAssetFilterChanged() {};
};

// Description:
//  The asset viewer interface for the asset database plugins to use
struct IAssetViewer
{
    DEFINE_OBSERVABLE_PURE_METHODS(IAssetViewerObserver);

    virtual HWND GetRenderWindow() = 0;
    virtual void ApplyFilters(const IAssetItemDatabase::TAssetFieldFiltersMap& rFieldFilters) = 0;
    virtual const IAssetItemDatabase::TAssetFieldFiltersMap& GetCurrentFilters() = 0;
    virtual void ClearFilters() = 0;
};
#endif // CRYINCLUDE_EDITOR_INCLUDE_IASSETVIEWER_H