/*

Copyright (C) 2016-2018 Daniel J. Sebald

This file is part of Octave.

Octave 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 3 of the License, or
(at your option) any later version.

Octave 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 Octave; see the file COPYING.  If not, see
<https://www.gnu.org/licenses/>.

*/

#if defined (HAVE_CONFIG_H)
#  include "config.h"
#endif

#if defined (HAVE_QSCINTILLA)

#include "marker.h"

namespace octave
{
  marker::marker (QsciScintilla *area, int original_linenr,
                  editor_markers type, int editor_linenr,
                  const QString& condition)
    : QObject ()
  {
    construct (area, original_linenr, type, editor_linenr, condition);
  }

  marker::marker (QsciScintilla *area, int original_linenr,
                  editor_markers type, const QString& condition)
    : QObject ()
  {
    construct (area, original_linenr, type, original_linenr - 1, condition);
  }

  void marker::construct (QsciScintilla *area, int original_linenr,
                          editor_markers type, int editor_linenr,
                          const QString& condition)
  {
    m_edit_area = area;
    m_original_linenr = original_linenr;
    m_marker_type = type;
    m_mhandle = m_edit_area->markerAdd (editor_linenr, m_marker_type);
    m_condition = condition;
  }

  void marker::handle_remove_via_original_linenr (int linenr)
  {
    if (m_original_linenr == linenr)
      {
        m_edit_area->markerDeleteHandle (m_mhandle);
        delete this;
      }
  }

  void marker::handle_request_remove_via_editor_linenr (int linenr)
  {
    // Get line number from the edit area and if it matches
    // the requested line number, remove.
    if (m_edit_area->markerLine (m_mhandle) == linenr)
      {
        // Rather than delete editor marker directly, issue command
        // to Octave core.  Octave core should signal back to remove
        // this breakpoint via debugger line number.
        emit request_remove (m_original_linenr);
      }
  }

  void marker::handle_remove (void)
  {
    m_edit_area->markerDeleteHandle (m_mhandle);
    delete this;
  }

  void marker::handle_find_translation (int linenr, int& translation_linenr,
                                        marker *& bp)
  {
    if (m_original_linenr == linenr)
      {
        translation_linenr = m_edit_area->markerLine (m_mhandle);
        bp = this;
      }
  }

  void marker::handle_find_just_before (int linenr, int& original_linenr,
                                        int& editor_linenr)
  {
    if (m_original_linenr < linenr && m_original_linenr >= original_linenr)
      {
        original_linenr = m_original_linenr;
        editor_linenr = m_edit_area->markerLine (m_mhandle);
      }
  }

  void marker::handle_find_just_after (int linenr, int& original_linenr,
                                       int& editor_linenr)
  {
    if (m_original_linenr > linenr && m_original_linenr <= original_linenr)
      {
        original_linenr = m_original_linenr;
        editor_linenr = m_edit_area->markerLine (m_mhandle);
      }
  }

  void marker::handle_report_editor_linenr (QIntList& lines,
                                            QStringList& conditions)
  {
    lines << m_edit_area->markerLine (m_mhandle);
    conditions << m_condition;
  }

  void marker::handle_marker_line_deleted (int mhandle)
  {
    // FUTURE SUPPORT: There really should be a signal in QsciScintilla
    // called markerLineDeleted (int mhandle) because there is no way
    // of knowing this.  QsciScintilla will place the marker at a
    // different line rather than remove it from the margin.  I (DJS) will
    // lobby for such a signal.
    if (m_mhandle == mhandle)
      {
        if (m_marker_type == breakpoint || m_marker_type == debugger_position)
          {
            int editor_linenr = m_edit_area->markerLine (m_mhandle);
            m_edit_area->markerDeleteHandle (m_mhandle);
            m_marker_type = (m_marker_type == breakpoint
                             ? unsure_breakpoint : unsure_debugger_position);
            m_mhandle = m_edit_area->markerAdd (editor_linenr, m_marker_type);
          }
      }
  }

  void marker::handle_marker_line_undeleted (int mhandle)
  {
    // FUTURE SUPPORT: There really should be a signal in QsciScintilla
    // called markerLineUndeleted (int mhandle) because there is no way
    // of knowing this.  QsciScintilla will place the marker at a
    // different line rather than remove it from the margin.  I (DJS) will
    // lobby for such a signal.
    if (m_mhandle == mhandle)
      {
        if (m_marker_type == unsure_breakpoint
            || m_marker_type == unsure_debugger_position)
          {
            int editor_linenr = m_edit_area->markerLine (m_mhandle);
            m_edit_area->markerDeleteHandle (m_mhandle);
            m_marker_type = (m_marker_type == unsure_breakpoint
                             ? breakpoint : debugger_position);
            m_mhandle = m_edit_area->markerAdd (editor_linenr, m_marker_type);
          }
      }
  }
}
#endif
