#ifndef TDESTRINGMATCHER_H
#define TDESTRINGMATCHER_H

#include <tqstring.h>
#include <tqstringlist.h>

#include "tdeglobal.h"

/************
 *
 *  Generic string matcher class.
 */
class TDECORE_EXPORT TDEStringMatcher
{
public:

  TDEStringMatcher();
  ~TDEStringMatcher();

  /**
      Perform string matching based on the match-controlling
      @properties described below.
   */
  bool match( const TQString&  );

  /**
      @return value of @property Criteria described below.
   */
  TQString getCriteria();

  /**
     Process @param newCriteria to initialize / update the
     @property patternsDivider described below.
   */
  bool setCriteria(TQString newCriteria);

  /**
      Present dialog that allows user to view/update current match-
      controlling @properties described below. @return one of the
      values of @enum UpdateResult listed below. @param dialogTitle
      can be used to describe the application/ the software component that is using
      the TDEStringMatcher. Examples:
        "Hidden File Definition<b>for Konqueror Listview"
        "Global Default Hidden File Definition"
   */
  int getMatchPropertiesFromUser( TQString dialogTitle = TQString("Define String Matching Criteria") );

  enum class Status : int {
    reloadCriteria = -1,       // Criteria was not changed, request reloading default
    criteriaUnchanged = 0,     // Criteria was not changed
    criteriaApplied = 1,       // New criteria applied, should not be saved
    saveCriteria = 2           // New criteria applied, request saving as default
  };
  #define ReloadCriteria   -1
  #define CriteriaUnchanged 0
  #define CriteriaApplied   1
  #define SaveCriteria      2

  /**
     Process @param newPatternsDivider to initialize / update
     the match-controlling @properties that are described below.
   */
  void setPatternsDivider(TQChar newPatternsDivider);

protected:

  /**
     Derive value of @property Criteria from the current values
     of the match-controlling @properties described below
   */
  void generateCriteria();

  /**
      Match-controlling properties:

      @property patternList is a list of zero or more string patterns each
      of which will be used as a wildcard or regex to match a string. If
      the list is empty, then no strings will match.
      @property isCaseInsensitive determines whether or not matching
      will be done in "case insensitive" fashion.
      @property isRegex determines whether or not the matching will
      be regex-based (versus wildcard/globbing-based).

   */
  bool     isCaseInsensitive = FALSE;
  bool     isRegex           = FALSE;
  TQStringList patternList; // FIXME: Use STL?

  /**
      @property patternsDivider is a character used to separate multiple
      match patterns in @property Criteria described below. This should be
      a character that will not be used in a match pattern.
   */
  TQChar patternsDivider;

  /**
      @property Criteria is a string which encodes the match-controlling
      @properties described above. It has the format ^([wWrR])(.+). The
      leading character's case determines @property isCaseInsensitive and
      its value determines @property isRegex (rR: TRUE, wW: FALSE).
      Remainder of string is a @property patternsDivider separated list of
      match patterns that determines the content of @property patternList.

   */
  TQString Criteria;

private:

  static constexpr const char   patternsDividerDefault = ',';
  static constexpr const char * criteriaMatchNothing   = "w";
};

/************
 *
 *  Hidden file matcher class.
 */

class TDECORE_EXPORT TDEHiddenFileMatcher : public TDEStringMatcher {
  friend class TDEGlobal; // for initInstance()

public:

  TDEHiddenFileMatcher();
  ~TDEHiddenFileMatcher();

private:

  TQString getGlobalCriteria();
  void     setGlobalCriteria();

  /**
      @property patternsDivider4fileNames specifies a reasonable
      default for separating multiple file name match patterns.
   */
  static constexpr const char patternsDivider4fileNames = '/';

  /**
      @property criteriaMatchDotfiles encodes the traditional
      unix-style hidden file matching of so-called dotfiles.
      It is default value of @property Criteria unless overridden.
   */
  static constexpr const char * criteriaMatchDotfiles = "w.*";

  // Default Criteria setting location in kdeglobals
  static constexpr const char * globalSettingsGroup = "General";
  static constexpr const char * globalSettingsKey = "globalHiddenFileSpec";

};

#endif