// Copyright Epic Games, Inc. All Rights Reserved.

#pragma once

#include "CoreMinimal.h"
#include "EditorViewportLayout.h"
#include "EditorViewportLayoutTwoPanes.h"
#include "Widgets/Docking/SDockTab.h"

/**
 * Represents the content in a viewport tab in an editor.
 * Each SDockTab holding viewports in an editor contains and owns one of these.
 */

class UNREALED_API FViewportTabContent
{
public:
    virtual ~FViewportTabContent() {}
    /** Returns whether the tab is currently shown */
    bool IsVisible() const;

    /** @return True if this viewport belongs to the tab given */
    bool BelongsToTab(TSharedRef<class SDockTab> InParentTab) const;

    /**
     * Returns whether the named layout is currently selected
     *
     * @param ConfigurationName		The name of the layout (for the names in namespace LevelViewportConfigurationNames)
     * @return						True, if the named layout is currently active
     */
    bool IsViewportConfigurationSet(const FName& ConfigurationName) const;

    virtual void SetViewportConfiguration(const FName& ConfigurationName) {}

    void PerformActionOnViewports(TFunction<void(FName Name, TSharedPtr<IEditorViewportLayoutEntity>)>& TFuncPtr);

    DECLARE_EVENT(FViewportTabContent, FViewportTabContentLayoutChangedEvent);
    virtual FViewportTabContentLayoutChangedEvent& OnViewportTabContentLayoutChanged() { return OnViewportTabContentLayoutChangedEvent; };

protected:
    FViewportTabContentLayoutChangedEvent OnViewportTabContentLayoutChangedEvent;

    TWeakPtr<class SDockTab> ParentTab;

    FString LayoutString;

    /** Current layout */
    TSharedPtr<class FEditorViewportLayout> ActiveViewportLayout;

    TOptional<FName> PreviouslyFocusedViewport;
};