// Copyright 1998-2015 Epic Games, Inc. All Rights Reserved.


#pragma once

#include "ModuleInterface.h"
#include "IContentBrowserSingleton.h"

/**
 * Content browser module
 */
class FContentBrowserModule : public IModuleInterface
{

public:

	/**  */
	DECLARE_MULTICAST_DELEGATE_TwoParams( FOnFilterChanged, const FARFilter& /*NewFilter*/, bool /*bIsPrimaryBrowser*/ );
	/** */
	DECLARE_MULTICAST_DELEGATE_TwoParams( FOnSearchBoxChanged, const FText& /*InSearchText*/, bool /*bIsPrimaryBrowser*/ );
	/** */
	DECLARE_MULTICAST_DELEGATE_TwoParams( FOnAssetSelectionChanged, const TArray<FAssetData>& /*NewSelectedAssets*/, bool /*bIsPrimaryBrowser*/ );
	/** */
	DECLARE_MULTICAST_DELEGATE_OneParam( FOnSourcesViewChanged, bool /*bExpanded*/ );
	/** */
	DECLARE_MULTICAST_DELEGATE_OneParam( FOnAssetPathChanged, const FString& /*NewPath*/ );

	/**
	 * Called right after the plugin DLL has been loaded and the plugin object has been created
	 */
	virtual void StartupModule();

	/**
	 * Called before the plugin is unloaded, right before the plugin object is destroyed.
	 */
	virtual void ShutdownModule();

	/** Gets the content browser singleton */
	virtual IContentBrowserSingleton& Get() const;

	/** Delegates to be called to extend the content browser menus */
	virtual TArray<FContentBrowserMenuExtender>& GetAllAssetContextMenuExtenders() {return AssetContextMenuExtenders;}
	virtual TArray<FContentBrowserMenuExtender_SelectedPaths>& GetAllPathViewContextMenuExtenders() {return PathViewContextMenuExtenders;}
	virtual TArray<FContentBrowserMenuExtender>& GetAllCollectionListContextMenuExtenders() {return CollectionListContextMenuExtenders;}
	virtual TArray<FContentBrowserMenuExtender>& GetAllCollectionViewContextMenuExtenders() {return CollectionViewContextMenuExtenders;}
	virtual TArray<FContentBrowserMenuExtender_SelectedAssets>& GetAllAssetViewContextMenuExtenders() {return AssetViewContextMenuExtenders;}
	virtual TArray<FContentBrowserMenuExtender>& GetAllAssetViewViewMenuExtenders() {return AssetViewViewMenuExtenders;}

	/** Delegate accessors */
	FOnFilterChanged& GetOnFilterChanged() { return OnFilterChanged; } 
	FOnSearchBoxChanged& GetOnSearchBoxChanged() { return OnSearchBoxChanged; } 
	FOnAssetSelectionChanged& GetOnAssetSelectionChanged() { return OnAssetSelectionChanged; } 
	FOnSourcesViewChanged& GetOnSourcesViewChanged() { return OnSourcesViewChanged; }
	FOnAssetPathChanged& GetOnAssetPathChanged() { return OnAssetPathChanged; }
	
private:
	IContentBrowserSingleton* ContentBrowserSingleton;
	TSharedPtr<class FContentBrowserSpawner> ContentBrowserSpawner;

	/** All extender delegates for the content browser menus */
	TArray<FContentBrowserMenuExtender> AssetContextMenuExtenders;
	TArray<FContentBrowserMenuExtender_SelectedPaths> PathViewContextMenuExtenders;
	TArray<FContentBrowserMenuExtender> CollectionListContextMenuExtenders;
	TArray<FContentBrowserMenuExtender> CollectionViewContextMenuExtenders;
	TArray<FContentBrowserMenuExtender_SelectedAssets> AssetViewContextMenuExtenders;
	TArray<FContentBrowserMenuExtender> AssetViewViewMenuExtenders;

	FOnFilterChanged OnFilterChanged;
	FOnSearchBoxChanged OnSearchBoxChanged;
	FOnAssetSelectionChanged OnAssetSelectionChanged;
	FOnSourcesViewChanged OnSourcesViewChanged;
	FOnAssetPathChanged OnAssetPathChanged;
};