/**
 * @file llfloaterlinkreplace.h
 * @brief Allows replacing link targets in inventory links
 * @author Ansariel Hiller
 *
 * $LicenseInfo:firstyear=2017&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2017, Linden Research, Inc.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#ifndef LL_FLOATERLINKREPLACE_H
#define LL_FLOATERLINKREPLACE_H

#include "llfloater.h"
#include "lleventtimer.h"
#include "lllineeditor.h"
#include "llinventoryfunctions.h"
#include "llviewerinventory.h"

class LLButton;
class LLTextBox;

class LLInventoryLinkReplaceDropTarget final : public LLLineEditor
{
public:
	struct Params : public LLInitParam::Block<Params, LLLineEditor::Params>
	{
		Params()
		{}
	};

	LLInventoryLinkReplaceDropTarget(const Params& p)
		: LLLineEditor(p) {}
	~LLInventoryLinkReplaceDropTarget() = default;

	typedef boost::signals2::signal<void(const LLUUID& id)> item_dad_callback_t;
	boost::signals2::connection setDADCallback(const item_dad_callback_t::slot_type& cb)
	{
		return mDADSignal.connect(cb);
	}

    BOOL postBuild() override
	{
		setEnabled(FALSE);
		return LLLineEditor::postBuild();
	}

    BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
								   EDragAndDropType cargo_type,
								   void* cargo_data,
								   EAcceptance* accept,
								   std::string& tooltip_msg) override;

	LLUUID getItemID() const { return mItemID; }
	void setItem(LLInventoryItem* item);

private:
	LLUUID mItemID;

	item_dad_callback_t mDADSignal;
};


class LLFloaterLinkReplace final : public LLFloater, LLEventTimer
{
	LOG_CLASS(LLFloaterLinkReplace);

public:
	LLFloaterLinkReplace(const LLSD& key);
	virtual ~LLFloaterLinkReplace();

	BOOL postBuild() override;
    void onOpen(const LLSD& key) override;

    BOOL tick() override;

private:
	void checkEnableStart();
	void onStartClicked();
	void onStartClickedResponse(const LLSD& notification, const LLSD& response);
	void decreaseOpenItemCount();
	void updateFoundLinks();
	void processBatch(LLInventoryModel::item_array_t items);

	static void linkCreatedCallback(LLHandle<LLFloaterLinkReplace> floater_handle, const LLUUID& old_item_id, const LLUUID& target_item_id,
	                                bool needs_wearable_ordering_update, bool needs_description_update, const LLUUID& outfit_folder_id);
	static void itemRemovedCallback(LLHandle<LLFloaterLinkReplace> floater_handle, const LLUUID& outfit_folder_id);

	void onSourceItemDrop(const LLUUID& source_item_id);
	void onTargetItemDrop(const LLUUID& target_item_id);

	LLInventoryLinkReplaceDropTarget*	mSourceEditor;
	LLInventoryLinkReplaceDropTarget*	mTargetEditor;
	LLButton*							mStartBtn;
	LLButton*							mRefreshBtn;
	LLTextBox*							mStatusText;

	LLUUID	mSourceUUID;
	LLUUID	mTargetUUID;
	U32		mRemainingItems;
	U32		mBatchSize;

	LLInventoryModel::item_array_t	mRemainingInventoryItems;
};

#endif // LL_FLOATERLINKREPLACE_H
