// This file is part of Notepad++ project
// Copyright (C)2003 Don HO <don.h@free.fr>
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// Note that the GPL places important restrictions on "derived works", yet
// it does not provide a detailed definition of that term.  To avoid      
// misunderstandings, we consider an application to constitute a          
// "derivative work" for the purpose of this license if it does any of the
// following:                                                             
// 1. Integrates source code from Notepad++.
// 2. Integrates/includes/aggregates Notepad++ into a proprietary executable
//    installer, such as those produced by InstallShield.
// 3. Links to a library or executes a program that does any of the above.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.


#pragma once

#include "FunctionCallTip.h"
#include "tinyxml.h"

const size_t tagMaxLen = 256;

class ScintillaEditView;

struct MatchedCharInserted {
	char _c;
	int _pos;
	MatchedCharInserted(char c, int pos) : _c(c), _pos(pos) {};
};

class InsertedMatchedChars {
public:
	void init(ScintillaEditView * pEditView) { _pEditView = pEditView; };
	void removeInvalidElements(MatchedCharInserted mci);
	void add(MatchedCharInserted mci);
	bool isEmpty() const { return _insertedMatchedChars.size() == 0; };
	int search(char startChar, char endChar, int posToDetect);

private:
	std::vector<MatchedCharInserted> _insertedMatchedChars;
	ScintillaEditView * _pEditView = nullptr;;
};

class AutoCompletion {
public:
	explicit AutoCompletion(ScintillaEditView * pEditView): _pEditView(pEditView), _funcCalltip(pEditView) {
		//Do not load any language yet
		_insertedMatchedChars.init(_pEditView);
	};

	~AutoCompletion(){
		if (_pXmlFile)
			delete _pXmlFile;
	};

	bool setLanguage(LangType language);

	//AutoComplete from the list
	bool showApiComplete();
	//WordCompletion from the current file
	bool showWordComplete(bool autoInsert);	//autoInsert true if completion should fill in the word on a single match
	// AutoComplete from both the list and the current file
	bool showApiAndWordComplete();
	//Parameter display from the list
	bool showFunctionComplete();
	// Autocomplete from path.
	void showPathCompletion();

	void insertMatchedChars(int character, const MatchedPairConf & matchedPairConf);
	void update(int character);
	void callTipClick(int direction);
	void getCloseTag(char *closeTag, size_t closeTagLen, size_t caretPos, bool isHTML);

private:
	bool _funcCompletionActive = false;
	ScintillaEditView * _pEditView = nullptr;
	LangType _curLang = L_TEXT;
	TiXmlDocument *_pXmlFile = nullptr;
	TiXmlElement *_pXmlKeyword = nullptr;

	InsertedMatchedChars _insertedMatchedChars;

	bool _ignoreCase = true;

	std::vector<generic_string> _keyWordArray;
	generic_string _keyWords;
	size_t _keyWordMaxLen = 0;

	FunctionCallTip _funcCalltip;

	const TCHAR * getApiFileName();
	void getWordArray(std::vector<generic_string> & wordArray, TCHAR *beginChars);
};