Class: AgEditor

Inherits:
Object
  • Object
show all
Includes:
Configurable
Defined in:
ext/ae-editor/ae-editor.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(_controller, _page_frame) ⇒ AgEditor

Returns a new instance of AgEditor.



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# File 'ext/ae-editor/ae-editor.rb', line 38

def initialize(_controller, _page_frame)
  @controller = _controller
  @page_frame = _page_frame
  @set_mod = false
  @font = @controller.conf('font')
  @font_bold = @controller.conf('font.bold')
  @font_metrics = TkFont.new(@font).metrics
  @font_metrics_bold = TkFont.new(@font_bold).metrics
  @highlighting = false
  @classbrowsing = false
  @find = @controller.get_find
  @read_only=false
end

Instance Attribute Details

#file ⇒ Object (readonly)

Returns the value of attribute file.



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# File 'ext/ae-editor/ae-editor.rb', line 34

def file
  @file
end

#page_frame ⇒ Object (readonly)

Returns the value of attribute page_frame.



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# File 'ext/ae-editor/ae-editor.rb', line 36

def page_frame
  @page_frame
end

#read_only ⇒ Object (readonly)

Returns the value of attribute read_only.



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# File 'ext/ae-editor/ae-editor.rb', line 35

def read_only
  @read_only
end

#root ⇒ Object (readonly)

Returns the value of attribute root.



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# File 'ext/ae-editor/ae-editor.rb', line 37

def root
  @root
end

#text ⇒ Object (readonly)

Returns the value of attribute text.



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# File 'ext/ae-editor/ae-editor.rb', line 37

def text
  @text
end

Instance Method Details

#build_tree(_sel = nil) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 868

def build_tree(_sel=nil)
  if _sel
    _label_sel = @tree_exp.itemcget(_sel,'text')
  end
  
  #clear tree
  begin
    @tree_exp.delete(@tree_exp.nodes('root'))
  rescue Exception
    # workaround on windows
    @tree_exp.delete(@tree_exp.nodes('root'))
  end
  
  
  #(re)build tree
  _txt = @text.get('1.0','end')
  @root = build_tree_from_source(_txt)
  @selected = nil
  build_tree_from_node(@root, _label_sel)
  if @selected
    @tree_exp.selection_add(@selected.rif)
    @tree_exp.open_tree(@selected.parent.rif)
    @tree_exp.see(@selected.rif)
  end
end

#build_tree_from_node(_node, _label_match = nil) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 835

def build_tree_from_node(_node, _label_match=nil)
  
  @image_kclass = TkPhotoImage.new('dat' => TREE_NODE_CLASS_GIF)
  @image_kmodule =  TkPhotoImage.new('dat' => TREE_NODE_MODULE_GIF)
  @image_kdef =  TkPhotoImage.new('dat' => TREE_NODE_DEF_GIF)
  @image_kdefclass =  TkPhotoImage.new('dat' => TREE_NODE_DEFCLASS_GIF)
  
  _sorted_sons = _node.sons.sort
  for inode in 0.._sorted_sons.length - 1
    _son = _sorted_sons[inode]
    if _son.kind == 'KClass'
        _image = @image_kclass
    elsif _son.kind == 'KModule'
        _image = @image_kmodule
    elsif _son.kind == 'KDef'
        _image = @image_kdef
    elsif _son.kind == 'KDefClass'
        _image = @image_kdefclass
    end
    @tree_exp.insert('end', _son.parent.rif ,_son.rif, {
      'text' =>  _son.label ,
      'helptext' => _son.helptext,
      'font'=>$arcadia['conf']['editor.explorer_panel.tree.font'],
      'image'=> _image
    }
    )
    if (_label_match) && (_label_match.strip == _son.label.strip)
      @selected = _son
    end
    build_tree_from_node(_son, _label_match)
  end
end

#build_tree_from_source(_source) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 753

def build_tree_from_source(_source)
  _row = 1
  _liv = 0
  _livs = Array.new
  root = TreeNode.new(nil, 'KRoot'){|_node|
    _node.rif= 'root'
    _node.label=''
  }
  _livs[_liv]=root
  _source.each_line{|line|
    line = "\s"+line.split("#")[0]+"\s"
    m = /[\s\n\t\;]+(module|class|def|if|unless|begin|case|for|while|do)[\s\n\t\;]+/.match(line)
    if m
      index = m.post_match.strip.length - 1
      if m.post_match.strip[index,index]=='{'
        _row = _row +1
        next
      end
      _liv>=0? _liv = _liv + 1:_liv=1
      _pliv = _liv
      _parent = nil
      while (_parent == nil && _pliv>=0)
        _pliv = _pliv -1
        _parent = _livs[_pliv]
      end
      if _parent
        _helptext = m.post_match.strip
        _label = _helptext.split('<')[0]
        if _label == nil || _label.strip.length==0
          _label = _helptext
        end
        if (m[0].strip[0..4] == "class" && m.pre_match.strip.length==0)
          _kind = 'KClass'
        elsif (m[0].strip[0..4] == "class" && m.pre_match.strip.length>0)
          _row = _row +1
          _liv = _liv - 1
          next
        elsif (m[0].strip[0..5] == "module" && m.pre_match.strip.length==0)
          _kind = 'KModule'
        elsif (m[0].strip[0..5] == "module" && m.pre_match.strip.length>0)
          _row = _row +1
          _liv = _liv - 1
          next
        elsif ((m[0].strip[0..4] == "begin")||(m[0].strip[0..3] == "case") ||(m[0].strip[0..4] == "while") || (m[0].strip[0..2] == "for") || (m[0].strip[0..1] == "do") || ((m[0].strip[0..1] == "if" || m[0].strip[0..5] == "unless") && m.pre_match.strip.length==0))
          _row = _row +1
          next
        elsif ((m[0].strip[0..1] == "if" || m[0].strip[0..5] == "unless") && m.pre_match.strip.length>0)
          _row = _row +1
          _liv = _liv - 1
          next
        elsif (m[0].strip[0..2] == "def" && m.pre_match.strip.length==0)
          _kind = 'KDef'
          if _label.include?(_parent.label + '.')
            _kind = 'KDefClass'
          end
#          elsif (m[0].strip[0..10] == "attr_reader" && m.pre_match.strip.length==0)
#            _kind = 'KAttr_reader'
#            _liv = _liv - 1
#            _row = _row +1
        end

        TreeNode.new(_parent, _kind){|_node|
          _node.label = _label
          _node.helptext = _helptext
          _node.rif = _row.to_s
          _livs[_pliv + 1]=_node
        }
      else
        _row = _row +1
        _liv = _liv - 1
        next
      end
    end
    m_end = /[\s\n\t\;]+end[\s\n\t\;]+/.match(line)
    if m_end
      _liv = _liv - 1
    end
    _row = _row +1
  }
  return root
end

#check_file_last_access_time ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1357

def check_file_last_access_time
  if @file && @file_last_access_time
 
  ftime = File.mtime(@file)
    if @file_last_access_time != ftime
      msg = 'File "'+@file+'" is changed! Reload?'
        if Tk.messageBox('icon' => 'error', 'type' => 'yesno',
          'title' => '(Arcadia) Libs', 'parent' => @text,
          'message' => msg) == 'yes'
          @text.delete('1.0','end')
          load_file(@file)
        else
          @file_last_access_time = ftime
        end
    end
  end
end

#check_modify ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1349

def check_modify
  if modified? 
    set_modify if !@set_mod
  else
    reset_modify
  end
end

#create_temp_file ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 167

def create_temp_file
  _file = @file+'~~'
  f = File.new(@file+'~~', "w")
  begin
    if f
      f.syswrite(text_value)
    end
  ensure
    f.close unless f.nil?
  end
  _file
end

#do_line_update ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1220

def do_line_update
  #re num in @text_line_num the portion of visibled screen  of @text
  if @text_line_num
    line_begin = @text.index('@0,0').split('.')[0].to_i
    line_end = @text.index('@0,'+TkWinfo.height(@text).to_s).split('.')[0].to_i + 1
    # breakpoint
    b = @controller.breakpoint_lines_on_file(@file)
    @text_line_num.delete('1.0','end')
    for j in line_begin...line_end
      #nline = j.to_s.rjust(6)
      nline = j.to_s.rjust(7)
      _index = @text_line_num.index('end')
      if @highlighting && @is_line_bold[j]
        @text_line_num.insert('end', "#{nline}\n",'bold_case')
      else
        @text_line_num.insert('end', "#{nline}\n")
      end
      if b.include?(j.to_s)
        @text_line_num.tag_add('breakpoint',_index+' -1 lines',_index+' -1 lines  lineend')
      end
    end
    
    if @highlighting
      _zone_begin = ((line_begin) / @highlight_zone_length).to_i + 1
      _zone_end = ((line_end) / @highlight_zone_length).to_i + 1
      (_zone_begin >=@last_zone_begin)?_zone_begin.upto(_zone_end+1){|_zone| 
        highlight_zone(_zone)	
      }:_zone_end.downto(_zone_begin-1){|_zone| 
        highlight_zone(_zone)		
      }
      @last_line_begin = line_begin
      @last_line_end = line_end
      @last_zone_begin = _zone_begin
      @last_zone_end = _zone_end
    end
  end
end

#do_tag_configure(_name) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 514

def do_tag_configure(_name)
  h = Hash.new
  if @lang_hash['hightlight.'+_name+'.color.foreground']
    h['foreground']=@lang_hash['hightlight.'+_name+'.color.foreground']
  end
  if @lang_hash['hightlight.'+_name+'.color.background']
    h['background']=@lang_hash['hightlight.'+_name+'.color.background']
  end
  if @lang_hash['hightlight.'+_name+'.style']== 'bold'
    h['font']=@font_bold
    @is_tag_bold[_name]= true
  end
  if @lang_hash['hightlight.'+_name+'.relief']
    h['relief']=@lang_hash['hightlight.'+_name+'.relief']
  end
  if @lang_hash['hightlight.'+_name+'.borderwidth']
    h['borderwidth']=@lang_hash['hightlight.'+_name+'.borderwidth']
  end
  @text.tag_configure(_name, h)
end

#do_tag_configure_global(_name) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 536

def do_tag_configure_global(_name)
  h = Hash.new
  if $arcadia['conf']['editor.hightlight.'+_name+'.color.foreground']
    h['foreground']=$arcadia['conf']['editor.hightlight.'+_name+'.color.foreground']
  end
  if $arcadia['conf']['editor.hightlight.'+_name+'.color.background']
    h['background']=$arcadia['conf']['editor.hightlight.'+_name+'.color.background']
  end
  if $arcadia['conf']['editor.hightlight.'+_name+'.style']== 'bold'
    h['font']=@font_bold
    @is_tag_bold[_name]= true
  end
  if $arcadia['conf']['editor.hightlight.'+_name+'.relief']
    h['relief']=$arcadia['conf']['editor.hightlight.'+_name+'.relief']
  end
  if $arcadia['conf']['editor.hightlight.'+_name+'.borderwidth']
    h['borderwidth']=$arcadia['conf']['editor.hightlight.'+_name+'.borderwidth']
  end
  @text.tag_configure(_name, h)
end

#file_extension(_filename = nil) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1404

def file_extension(_filename=nil)
  if _filename
    _m = /(.*\.)(.*$)/.match(File.basename(_filename))
  end
  _ret = (_m && _m.length > 1)?_m[2]: nil
end

#find_and_set_tag(_re, _row, _txt, _tag, _tag_rem = nil) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 984

def find_and_set_tag(_re, _row, _txt, _tag, _tag_rem = nil)
  m = _re.match(_txt)
  _end = 0
  if m && @is_tag_bold[_tag]
    @is_line_bold[_row]=true
  end
  #_old_txt = ''
  while m && (_txt=m.post_match)
    if !defined?(_old_txt) || _txt != _old_txt
      _old_txt = _txt 
      _ibegin = _row.to_s+'.'+(m.begin(0)+_end).to_s
      _end = m.end(0) + _end
      _iend = _row.to_s+'.'+(_end.to_s)
      if _tag_rem
        _tag_rem.each {|value|
          @text.tag_remove(value,_ibegin, _iend)
        }
      end
      @text.tag_add(_tag,_ibegin, _iend)
      if @op_only_first.include?(_tag)
        m = nil
      else
        m = _re.match(_txt)
      end
    else
      m = nil
    end
  end
end

#find_and_set_tag_ml(_re, _row, _txt, _tag, _tag_rem = nil) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 939

def find_and_set_tag_ml(_re, _row, _txt, _tag, _tag_rem = nil)
  m = _re.match(_txt)
  _offset = 0
  _s_txt = _txt
  #_old_txt = ''
  while m && (_txt=m.post_match)
    if !defined?(_old_txt) || _txt != _old_txt

      apos =  pos_to_index(_s_txt, _offset+m.begin(0))
      _offset = _offset + m.end(0)
      
      
      _old_txt = _txt
      _r = _row + apos[0]
      _ibegin = _r.to_s+'.'+apos[1].to_s
      _iend = _r.to_s+'.'+(apos[1]+m.end(0)-m.begin(0)).to_s
      if _tag_rem
        _tag_rem.each {|value|
          @text.tag_remove(value,_ibegin, _iend)
        }
      end
      @text.tag_add(_tag,_ibegin, _iend)
      if @is_tag_bold[_tag]
        @is_line_bold[_r]=true
      end

      if @op_only_first.include?(_tag) && _txt
        #eliminino la prima riga a partire dal risultato
        _p = _txt.index("\n")+1
         if _p
            _txt = _txt[_p..-1]
            _offset = _offset + _p
         else
           m = nil
         end
      end
      m = _re.match(_txt)
      
    else
      m = nil
    end
  end
end

#hide_spaces ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1092

def hide_spaces
  @text.tag_remove('spaces','1.0', 'end')
  @spaces_show = false
end

#hide_tabs ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1087

def hide_tabs
  @text.tag_remove('tabs','1.0', 'end')
  @tabs_show = false
end

#highlight_zone(_zone) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1268

def highlight_zone(_zone)
  if !@highlight_zone[_zone]
    _b = @highlight_zone_length*(_zone - 1) 
    _e = @highlight_zone_length*(_zone) #+ 1
    for j in _b..._e
      rehighlightline(j)
    end
    @highlight_zone[_zone] = true
  end
end

#highlight_zone_new(_zone) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1258

def highlight_zone_new(_zone)
  if !@highlight_zone[_zone]
    _b = @highlight_zone_length*(_zone - 1) 
    _e = @highlight_zone_length*(_zone) #+ 1
    rehighlightlines(_b,_e)
    @highlight_zone[_zone] = true
  end
end

#highlightline(_row, _line, _check_mod = false) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1164

def highlightline(_row, _line, _check_mod = false)
  if _check_mod 
    check_modify
  end
  _txt = _line
  _end = 0
  
  @op_to_end_line.each{|c|
    if @h_re[c]
      m_c = @h_re[c].match(_txt)
      if m_c then
        _ibegin = _row.to_s+'.'+(m_c.begin(0)).to_s
        _iend = _row.to_s+'.'+(_line.length - 1).to_s
        @text.tag_add(c,_ibegin, _iend)
        _txt = m_c.pre_match
      end
    end
  } if @lang_hash['re_op.to_line_end']

  arem = Array.new
  
    
  @h_classes.each{|c|
    if !@op_to_end_line.include?(c) && @h_re[c]
      find_and_set_tag(@h_re[c], _row, _txt, c, arem)
      arem << c
    end
  } if _txt.strip.length > 0  

  find_and_set_tag(/\t/, _row, _txt, 'tabs', arem) if @tabs_show 
  find_and_set_tag(/[ ^\t]\s*/, _row, _txt, 'spaces', arem) if @spaces_show 
end

#highlightlines(_row, _lines, _check_mod = false) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1130

def highlightlines(_row, _lines, _check_mod = false)
  if _check_mod 
    check_modify
  end
  _txt = _lines
  _end = 0
  
#    @op_to_end_line.each{|c|
#      if @h_re[c]
#        m_c = @h_re[c].match(_txt)
#        if m_c then
#          _ibegin = _row.to_s+'.'+(m_c.begin(0)).to_s
#          _iend = _row.to_s+'.'+(_line.length - 1).to_s
#          @text.tag_add(c,_ibegin, _iend)
#          _txt = m_c.pre_match
#        end
#      end
#    } if @lang_hash['re_op.to_line_end']

  arem = Array.new
  
    
  @h_classes.each{|c|
    if !@op_to_end_line.include?(c) && @h_re[c]
      find_and_set_tag_ml(@h_re[c], _row, _txt, c, arem)
      arem << c
    end
  } if _txt.strip.length > 0  

  find_and_set_tag_ml(/\t/, _row, _txt, 'tabs', arem) if @tabs_show 
  find_and_set_tag_ml(/[ ^\t]\s*/, _row, _txt, 'spaces', arem) if @spaces_show 
end

#hscroll(mode, wrap_mode = "char") ⇒ Object

horizontal scrollbar : ON/OFF



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# File 'ext/ae-editor/ae-editor.rb', line 914

def hscroll(mode, wrap_mode="char")
  st = TkGrid.info(@h_scroll)
  if mode && st == [] then
    @h_scroll.grid('row'=>1, 'column'=>0, 'sticky'=>'ew')
    @text.configure('wrap'=> 'none')
  elsif !mode && st != [] then
    @h_scroll.ungrid
    @text.configure('wrap'=> wrap_mode)
  end
  self
end

#indentation_space_2_tabs(_n_space = 2) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1047

def indentation_space_2_tabs(_n_space=2)
  _row = 1
  @text.value.each{|_line|
    m = /\s*/.match(_line)
    _end = 0
    if m && m.begin(0)==0
      _s = m[0]
      if !_s.include?("\n") && !_s.include?("\t")
        _ibegin = _row.to_s+'.0'
        _iend = _row.to_s+'.'+m.end(0).to_s
        _n_tab = (_s.length / _n_space).round
        @text.delete(_ibegin, _iend)
        @text.insert(_ibegin,"\t"*_n_tab )
      end
    end
    _row = _row+1
  }
  check_modify    
end

#indentation_tabs_2_space(_n_space = 2) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1067

def indentation_tabs_2_space(_n_space=2)
  _row = 1
  @text.value.each{|_line|
    m = /\t*/.match(_line)
    _end = 0
    if m && m.begin(0)==0
      _s = m[0]
      if !_s.include?("\n")
        _ibegin = _row.to_s+'.0'
        _iend = _row.to_s+'.'+m.end(0).to_s
        @text.delete(_ibegin, _iend)
        @text.insert(_ibegin,"\s"*_s.length*_n_space )
      end
    end
    _row = _row+1
  }
  check_modify    
end

#init_editing(_ext = 'rb') ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1375

def init_editing(_ext='rb')
  # find file lang
  _ext='' if _ext.nil?
  lang_file = File.dirname(__FILE__)+'/langs/'+_ext+'.lang'
  if File.exist?(lang_file)
    @lang_hash = properties_file2hash(lang_file)
  elsif File.exist?(lang_file+'.bind')
    b= properties_file2hash(lang_file+'.bind')
    lang_file_bind = File.dirname(__FILE__)+'/langs/'+b['bind']
    if b && File.exist?(lang_file_bind)
      @lang_hash = properties_file2hash(lang_file_bind)
    end
  else
    @lang = nil
  end
  if _ext=='rb'
    @fm = AGTkVSplittedFrames.new(@page_frame,150)
    @fm1 = AGTkVSplittedFrames.new(@fm.right_frame,60)
    initialize_tree(@fm.left_frame)
  else
    @fm1 = AGTkVSplittedFrames.new(@page_frame,60)
  end
  @fm1.splitter_frame.configure('relief'=>'flat')
  initialize_text(@fm1.right_frame)
  initialize_text_binding
  initialize_highlight
  initialize_line_number(@fm1.left_frame)
end

#initialize_highlight ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 476

def initialize_highlight
  if @lang_hash.nil?
    @highlighting = false
    return
  end
  @highlighting = true
  @highlight_zone = Hash.new;
#    @highlight_zone_length = 45;
  @highlight_zone_length = 60;
  @last_line_begin = 0
  @last_line_end = 0
  @last_zone_begin=0;
  @last_zone_end=0;
  @is_line_bold = Hash.new
  @is_tag_bold = Hash.new

  @h_classes = @lang_hash['classes'].split(',')
  @h_re = Hash.new
  @op_to_end_line = Array.new
  @op_to_end_line.concat(@lang_hash['re_op.to_line_end'].split(',')) if @lang_hash['re_op.to_line_end']

  @op_only_first = Array.new
  @op_only_first.concat(@lang_hash['re_op.only_first'].split(',')) if @lang_hash['re_op.only_first']
  
  @h_classes.each{|c|
    do_tag_configure(c)
    @h_re[c]=Regexp::new(@lang_hash["re.#{c}"].strip) if @lang_hash["re.#{c}"]
  }

  ['sel','selected','tabs','spaces'].each{|_name|
    if @lang_hash['hightlight.'+_name+'.foreground']
      do_tag_configure(_name)
    else
      do_tag_configure_global(_name)
    end
  }
end

#initialize_line_number(_frame) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 421

def initialize_line_number(_frame)
  @text_line_num = TkText.new(_frame){
    wrap  'none'
    relief 'flat'
    undo false
    takefocus 0
    insertofftime 0
    exportselection true
    autoseparators true
    cursor nil
    insertwidth 0
    background $arcadia['conf']['editor.line_number_panel.color.background']
    #background $arcadia['conf']['editor.color.background']
    foreground $arcadia['conf']['editor.line_number_panel.color.foreground']
    highlightcolor $arcadia['conf']['editor.line_number_panel.color.background']
    highlightthickness 0
    place(
      'x'=>0,
      'y'=>0,
      'relheight'=>1,
      'relwidth'=>1,
      'bordermode'=>'outside'
    )
  }
  delta = @font_metrics_bold[2][1]-@font_metrics[2][1]
  @text_line_num.tag_configure('bold_case', 'spacing1'=>delta)
  @text_line_num.tag_configure('breakpoint', 'background'=>'red','foreground'=>'yellow','borderwidth'=>1, 'relief'=>'raised')
  @text_line_num.tag_configure('sel', 
    'background'=>$arcadia['conf']['editor.line_number_panel.color.background'],
    'foreground'=>$arcadia['conf']['editor.line_number_panel.color.foreground'],
    'relief'=>'flat'
  )
  @text_line_num.bind("Double-ButtonPress-1", proc{|x,y|
    _index = @text_line_num.index("@#{x},#{y}")
    _line = @text_line_num.get(_index+' linestart',_index+' lineend').strip
    if @controller.breakpoint_lines_on_file(@file).include?(_line)
      @text_line_num.tag_remove('breakpoint',_index+' linestart',_index+' lineend')
      @controller.breakpoint_del(@file, _line)
    else
      @text_line_num.tag_add('breakpoint',_index+' linestart',_index+' lineend')
     # @text_line_num.tag_add('breakpoint',_index+' linestart',_index+' linestart + 1 chars')
      @controller.breakpoint_add(@file, _line)
    end
  },
  "%x %y")
  
  @text_line_num.configure('font', @font);
  @text_line_num.tag_configure('line_num',
    'foreground' => '#FFFFFF',
    'background' =>'#0000a0',
    'borderwidth'=>2,
    'relief'=>'raised'
  )
end

#initialize_text(_frame) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 127

def initialize_text(_frame)
  @v_scroll = TkScrollbar.new(_frame,
    'orient'=>'vertical',
    'relief'=>'flat'
  ).pack('side' => 'right', 'fill' => 'y')
  @text = TkText.new(@fm1.right_frame){|j|
    wrap  'none'
    relief 'flat'
    undo true
    insertofftime 200
    insertontime 200
    insertbackground $arcadia['conf']['editor.color.insertbackground']
    background $arcadia['conf']['editor.color.background']
    foreground $arcadia['conf']['editor.color.foreground']
    highlightcolor $arcadia['conf']['editor.color.background']
    highlightthickness 0
    insertwidth 3
    exportselection true
    autoseparators true
    padx 0
    tabs $arcadia['conf']['editor.tabs']
    place(
      'x'=>0,
      'y'=>0,
      'width' => -15,
      'relheight'=>1,
      'relwidth'=>1,
      'bordermode'=>'outside'
    )
  }
  @text.configure('font', @font);

  do_tag_configure_global('debug')
  @text.tag_configure('eval','foreground' => 'yellow', 'background' =>'red','borderwidth'=>1, 'relief'=>'raised')
  @text.tag_configure('errline','borderwidth'=>1, 'relief'=>'groove')
  #@text.tag_configure('debug', 'background' =>'#b9c6d9', 'borderwidth'=>1 ,'relief'=>'raise')
  @buffer = text_value
  pop_up_menu
end

#initialize_text_binding ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 180

def initialize_text_binding
  @v_scroll.command(proc{|*args|
    @text.yview *args
  })
  @text.yscrollcommand(proc{|first,last| @v_scroll.set(first,last)
    self.do_line_update()
  })
  @text.tag_bind('selected', 'Enter', proc{@text.tag_remove('selected','1.0','end')})

  @text.bind("Enter", proc{check_file_last_access_time})
#    @text.bind("ButtonPress-1", proc{
#      _code = $arcadia['rad'].palette.give_me_code
#      @text.insert('insert', _code) if _code
#    })

  @text.bind("Control-KeyPress"){|e|
    case e.keysym
    when 'space'
      line, col = @text.index('insert').split('.')
      _file = create_temp_file
      #EditorContract.instance.complete_code(self, 'file'=>_file, 'line'=>line.to_s, 'col'=>col.to_s)
      begin
        event = Arcadia.process_event(CompleteCodeEvent.new(self, 'file'=>_file, 'row'=>line.to_s, 'col'=>col.to_s))
      ensure
        File.delete(_file) if File.exist?(_file)
      end
      @controller.raise_complete_code(event)
    when 'z'
      _b = @text.index('insert').split('.')[0].to_i
      @text.edit_undo
      _e = @text.index('insert').split('.')[0].to_i
      if @highlighting
        for j in _b..._e
          rehighlightline(j)
        end
      end
      break
    when 'c'
      @text.text_copy
      break
    when 'x'
      @text.text_cut
      break
    when 'v'
      _b = @text.index('insert').split('.')[0].to_i
      @text.text_paste
      _e = @text.index('insert').split('.')[0].to_i
      if @highlighting
        for j in _b..._e
          rehighlightline(j)
        end
      end
      break
    end
    case e.keysym
    when 's'
      save
    when 'f'
      _r = @text.tag_ranges('sel')
      if _r.length>0
        _text=@text.get(_r[0][0],_r[0][1])
        if _text.length > 0
          @find.e_what.text(_text)
        end
      else
      end
      @find.use(self)
      @find.e_what.focus
      @find.show
    when 'egrave'
      @text.insert('insert',"{")
    when 'plus'
      @text.insert('insert',"}")
    end
  }

  @text.bind("Control-Shift-KeyPress"){|e|
    case e.keysym
    when 'I'
      _r = @text.tag_ranges('sel')
      _row_begin = _r[0][0].split('.')[0].to_i
      _row_end = _r[_r.length - 1][1].split('.')[0].to_i
      n_space = $arcadia['conf']['editor.tab-replace-width-space'].to_i
      if n_space > 0
        suf = "\s"*n_space
      else
        suf = "\t"
      end

      for _row in _row_begin..._row_end
        @text.insert(_row.to_s+'.0',suf)
      end
    when 'U'
      _r = @text.tag_ranges('sel')
      _row_begin = _r[0][0].split('.')[0].to_i
      _row_end = _r[_r.length - 1][1].split('.')[0].to_i
      n_space = $arcadia['conf']['editor.tab-replace-width-space'].to_i
      if n_space > 0
        suf = "\s"*n_space
      else
        suf = "\t"
      end
      _l_suf = 	suf.length.to_s
      for _row in _row_begin..._row_end
        if @text.get(_row.to_s+'.0',_row.to_s+'.'+_l_suf) == suf
          @text.delete(_row.to_s+'.0',_row.to_s+'.'+_l_suf)
        end
      end
    when 'C'
      _r = @text.tag_ranges('sel')
      _row_begin = _r[0][0].split('.')[0].to_i
      _row_end = _r[_r.length - 1][1].split('.')[0].to_i

      for _row in _row_begin..._row_end
        if @text.get(_row.to_s+'.0',_row.to_s+'.1') == "#"
          @text.delete(_row.to_s+'.0',_row.to_s+'.1')
        else
          @text.insert(_row.to_s+'.0',"#")
        end
        rehighlightline(_row) if @highlighting
      end

    end
  }
  
  @text.bind("KeyPress"){|e|
    case e.keysym
    #when 'Return'
    when 'BackSpace'
      _index = @text.index('insert')
      _row, _col = _index.split('.')
      rehighlightline(_row.to_i) if @highlighting
    when 'Delete'
      _index = @text.index('insert')
      _row, _col = _index.split('.')
      rehighlightline(_row.to_i) if @highlighting
    when 'F5'
      save
      $arcadia['shell'].run(@file.to_s)
    when 'F3'
      @find.do_find_next
    when 'F1'
      line, col = @text.index('insert').split('.')
      _x, _y = @controller.xy_insert
      _file = create_temp_file
      begin
        Arcadia.process_event(DocCodeEvent.new(self, 'file'=>_file, 'row'=>line.to_s, 'col'=>col.to_s, 'xdoc'=>_x, 'ydoc'=>_y))
      ensure
        File.delete(_file) 	if File.exist?(_file)
      end
      #EditorContract.instance.doc_code(@controller, 'file'=>_file, 'line'=>line.to_s, 'col'=>col.to_s, 'xdoc'=>_x, 'ydoc'=>_y)
    when 'Tab'
      n_space = $arcadia['conf']['editor.tab-replace-width-space'].to_i
      _r = @text.tag_ranges('sel')
      if _r && _r[0]
        _row_begin = _r[0][0].split('.')[0].to_i
        _row_end = _r[_r.length - 1][1].split('.')[0].to_i
        if n_space > 0
          suf = "\s"*n_space
        else
          suf = "\t"
        end
        for _row in _row_begin..._row_end
          @text.insert(_row.to_s+'.0', suf)
        end
        break
      elsif n_space > 0
        @text.insert('insert', "\s"*n_space)
        break
      end
    end
  }

  @text.bind("KeyRelease"){|e|
    case e.keysym
      when 'Control_L','Return', 'Control_V', 'BackSpace', 'Delete'
        if modified?
          set_modify
        else
          reset_modify
        end
        do_line_update
      when 'Right','Left','Down', 'Up'
        # do nil
      else
        check_modify
    end
    
    case e.keysym
    when 'Return'
      _index = @text.index('insert')
      _row, _col = _index.split('.')
      _txt = @text.get((_row.to_i-1).to_s+'.0',_index)
      if _txt.length > 0
        m = /\s*/.match(_txt)
        if m
          if (m[0] != "\n")
            _sm = m[0]
            _sm = _sm.sub(/\n/,"")
            @text.insert('insert',_sm)
          end
        end
      end
      if _row.to_i + 1  ==  @text.index('end').split('.')[0].to_i
        do_line_update
      end
    else 
      if @highlighting && /\w/.match(e.keysym)
        rehighlightline(@text.index('insert').split('.')[0].to_i)
      end
    end
  }


  @text.bind("Shift-KeyPress"){|e|
    case e.keysym
    when 'Tab'
      _r = @text.tag_ranges('sel')
      if _r && _r[0]
        _row_begin = _r[0][0].split('.')[0].to_i
        _row_end = _r[_r.length - 1][1].split('.')[0].to_i
        
        n_space = $arcadia['conf']['editor.tab-replace-width-space'].to_i
        if n_space > 0
          suf = "\s"*n_space
        else
          suf = "\t"
          n_space = 1
        end
        for _row in _row_begin..._row_end
          if @text.get(_row.to_s+'.0',_row.to_s+'.'+n_space.to_s) == suf
            @text.delete(_row.to_s+'.0',_row.to_s+'.'+n_space.to_s)
          end
        end
        break
      end
    end
  }

end

#initialize_tree(_frame) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 52

def initialize_tree(_frame)
  @classbrowsing = true 
  @nb = Tk::BWidget::NoteBook.new(_frame){
    tabbevelsize 0
    internalborderwidth 0
    activeforeground 'red'
    activebackground 'yellow'
    borderwidth 1
    side $arcadia['conf']['editor.explorer_panel.tabs.side']
    font $arcadia['conf']['editor.tabs.font']
    pack('fill'=>'both', :padx=>0, :pady=>0, :expand => 'yes')
  }
  @nb_tab_exp = @nb.insert('end','exp' ,'text'=>'Source Tree' )
  @nb.raise('exp')
  _tree_goto = proc{|_self|
    _line = _self.selection_get[0]
    _index =_line.to_s+'.0'
    _hinner_text = @tree_exp.itemcget(_line,'text').strip
    _editor_line = @text.get(_index, _index+ '  lineend')
    if !_editor_line.include?(_hinner_text)
      Arcadia.new_msg(self, "... rebuild tree \n")
      if @tree_thread && @tree_thread.alive?
        @tree_thread.exit
      end
      @tree_thread = Thread.new{
        build_tree(_line)
        Tk.update
      }
      _line = _self.selection_get[0]
      _index =_line.to_s+'.0'
    end
    @text.see(_index)
    @text.tag_remove('selected','1.0','end')
    @text.tag_add('selected',_line.to_s+'.0',(_line+1).to_s+'.0')
  }
  @tree_exp = Tk::BWidget::Tree.new(@nb_tab_exp){
    background '#FFFFFF'
    relief 'flat'
    showlines false
    deltay 18
    dragenabled true
    selectcommand proc{ _tree_goto.call(self) } 
    place('relwidth' => 1,'relx' => 0,'x' => '0','y' => '0','relheight' => '1','rely' => 0,'height' => 1,'bordermode' => 'inside','width' => '50')
  }
  
  _c_explo = proc{|*args| @tree_exp.yview(*args)}
  _s_explo = TkScrollbar.new(@nb_tab_exp){|s|
    width 8
    command _c_explo
  }.pack('side'=>'right', 'fill'=>'y')
  @tree_exp.yscrollcommand proc{|first,last| _s_explo.set first,last}
  pop_up_menu_tree
end

#insert_popup_menu_item(_where, *args) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 894

def insert_popup_menu_item(_where, *args)
  @pop_up.insert(_where,*args)
end

#load_file(_filename = nil) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1411

def load_file(_filename = nil)
  #if filename is nil then open a new tab
  @file = _filename
  if _filename
    #init_editing(file_extension(_filename))
    File::open(_filename,'r'){ |file|
      @text.insert('end',file.readlines.collect!{| line | line.chomp+"\n" }.to_s)
    }
  end
  set_read_only(!File.stat(_filename).writable?)
  
  reset
  refresh
end

#mark_debug(_index) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 742

def mark_debug(_index)
  @text.tag_add('debug',_index +' linestart', _index +' +1 lines linestart')
  #@text.tag_add('debug',_index +' linestart', _index +' lineend')
end

#mark_selected(_index) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 747

def mark_selected(_index)
  @text.tag_remove('selected','1.0', 'end')
  @text.tag_add('selected',_index +' linestart', _index +' +1 lines linestart')
end

#modified? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'ext/ae-editor/ae-editor.rb', line 1098

def modified?
  return !(@buffer === text_value)
end

#pop_up_menu ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 557

def pop_up_menu
  @pop_up = TkMenu.new(
    :parent=>@text,
    :tearoff=>1,
    :title => 'Menu'
  )
  @pop_up.insert('end',
    :command,
    :label=>'Save as',
    :hidemargin => false,
    :command=> proc{save_as}
  )
  @pop_up.insert('end',
    :command,
    :label=>'Save',
    :hidemargin => false,
    :command=> proc{save}
  )

  @pop_up.insert('end',
    :command,
    :label=>'Close',
    :hidemargin => false,
    :command=> proc{@controller.close_editor(self)}
  )

  @pop_up.insert('end',
    :command,
    :label=>'Close others',
    :hidemargin => false,
    :command=> proc{@controller.close_others_editor(self)}
  )

  @pop_up.insert('end',
    :command,
    :label=>'Close all',
    :hidemargin => false,
    :command=> proc{@controller.close_all_editor(self)}
  )


  @pop_up.insert('end', :separator)

  @pop_up.insert('end',
    :command,
    :label=>'Color',
    :hidemargin => false,
    :command=> proc{
      @text.insert('insert',Tk.chooseColor)
    }
  )
  @pop_up.insert('end',
    :command,
    :label=>'Font',
    :hidemargin => false,
    :command=> proc{
      @text.insert('insert', $arcadia['action.get.font'].call)
    }
  )
  

  @pop_up.insert('end', :separator)

  #---- debug menu
  _sub_debug = TkMenu.new(
    :parent=>@pop_up,
    :tearoff=>0,
    :title => 'Debug'
  )

  _sub_debug.insert('end',
    :command,
    :label=>'Eval selected',
    :hidemargin => false,
    :command=> proc{
      _r = @text.tag_ranges('sel')
      if _r.length>0
        _text=@text.get(_r[0][0],_r[0][1])
        if _text.length > 0
          Arcadia.process_event(EvalExpressionEvent.new(self, 'expression'=>_text))
          #EditorContract.instance.eval_expression(self, 'text'=>_text)
        end
      end
    }
  )

  @pop_up.insert('end',
    :cascade,
    :label=>'Debug',
    :menu=>_sub_debug,
    :hidemargin => false
  )


  #---- code menu
  _sub_code = TkMenu.new(
    :parent=>@pop_up,
    :tearoff=>0,
    :title => 'Code'
  )

  _sub_code.insert('end',
    :command,
    :label=>'Set wrap',
    :hidemargin => false,
    :command=> proc{@text.configure('wrap'=>'word')}
  )

  _sub_code.insert('end',
    :command,
    :label=>'Set no wrap',
    :hidemargin => false,
    :command=> proc{@text.configure('wrap'=>'none')}
  )

  _sub_code.insert('end',
    :command,
    :label=>'Show tabs',
    :hidemargin => false,
    :command=> proc{show_tabs}
  )


  _sub_code.insert('end',
    :command,
    :label=>'Hide tabs',
    :hidemargin => false,
    :command=> proc{hide_tabs}
  )

  _sub_code.insert('end',
    :command,
    :label=>'Show spaces',
    :hidemargin => false,
    :command=> proc{show_spaces}
  )


  _sub_code.insert('end',
    :command,
    :label=>'Hide spaces',
    :hidemargin => false,
    :command=> proc{hide_spaces}
  )


  _sub_code.insert('end',
    :command,
    :label=>'Space to tabs indentation',
    :hidemargin => false,
    :command=> proc{indentation_space_2_tabs}
  )

  _sub_code.insert('end',
    :command,
    :label=>'Tabs to space indentation',
    :hidemargin => false,
    :command=> proc{indentation_tabs_2_space}
  )

  
  @pop_up.insert('end',
    :cascade,
    :label=>'Code',
    :menu=>_sub_code,
    :hidemargin => false
  )




  @text.bind("Button-3",
    proc{|x,y|
      _x = TkWinfo.pointerx(@text)
      _y = TkWinfo.pointery(@text)
      @pop_up.popup(_x,_y)
    },
  "%x %y")
end

#pop_up_menu_tree ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 106

def pop_up_menu_tree
  @pop_up_tree = TkMenu.new(
    :parent=>@tree_exp,
    :title => 'Menu tree'
  )
  @pop_up_tree.insert('end',
    :command,
    :label=>'Rebuild',
    :hidemargin => false,
    :command=> proc{build_tree}
  )
  @tree_exp.bind_append("Button-3",
    proc{|x,y|
      _x = TkWinfo.pointerx(@tree_exp)
      _y = TkWinfo.pointery(@tree_exp)
      @pop_up_tree.popup(_x,_y)
    },
  "%x %y")
end

#pos_to_index(_txt, _pos) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1115

def pos_to_index(_txt, _pos)
  _a= _txt[0.._pos].split("\n")
  if _a && _a.length > 0
    _row = _a.length
    if _a.length == 2
      _col = _a[-1].length - 1
    else
      _col = _pos
    end
    return [_row,_col]
  else
    return nil
  end
end

#refresh ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1445

def refresh
  build_tree if @classbrowsing
end

#rehighlightline(_row) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1197

def rehighlightline(_row)
  _ibegin = _row.to_s+'.0'
  _iend = (_row+1).to_s+'.0'
  @h_classes.each{|c| @text.tag_remove(c,_ibegin, _iend)}
  _line = @text.get(_ibegin, _iend)
  highlightline(_row, _line)
end

#rehighlightlines(_row_begin, _row_end) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1205

def rehighlightlines(_row_begin, _row_end)
  _ibegin = _row_begin.to_s+'.0'
  _iend = (_row_end+1).to_s+'.0'
  @h_classes.each{|c| @text.tag_remove(c,_ibegin, _iend)}
  _lines = @text.get(_ibegin, _iend)
  highlightlines(_row_begin, _lines)
end

#reset ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1439

def reset
  @buffer = text_value
  reset_modify
  @text.edit_reset
end

#reset_modify ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1109

def reset_modify
  @controller.change_tab_reset_modify(@page_frame)
  @set_mod = false
  @file_last_access_time = File.mtime(@file) if @file
end

#row(_index = 'insert') ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1214

def row(_index='insert')
  _row = @text.index(_index).split('.')[0].to_i
  #print "def row(_index='insert')",_row.to_s,"\n"
  return _row
end

#rowcol(_index, _gap_row = nil, _gap_col = nil) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 926

def rowcol(_index, _gap_row = nil, _gap_col = nil)
  _riga, _colonna = _index.split('.')
  if _gap_row == nil
    _riga = '1'
    _gap_row = 0
  end
  if _gap_col == nil
    _colonna = '0'
    _gap_col = 0
  end
  return (_riga.to_i + _gap_row).to_s + '.'+ (_colonna.to_i + _gap_col).to_s
end

#save ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1321

def save
  if !@file
    save_as
  else
    f = File.new(@file, "w")
    begin
      if f
        f.syswrite(text_value)
        @buffer = text_value
        reset_modify
      end
    ensure
      f.close unless f.nil?
    end
    #EditorContract.instance.file_saved(self,'file' =>@file)
  end
end

#save_as ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1339

def save_as
  @file = Tk.getSaveFile("filetypes"=>[["Ruby Files", [".rb", ".rbw"]]])
  @file = nil if @file == ""  # cancelled
  if @file
    save
    @controller.change_file_name(@page_frame, @file)
    #EditorContract.instance.file_created(self, 'file'=>@file)
  end
end

#set_modify ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1102

def set_modify
  if !@set_mod
    @set_mod = true
    @controller.change_tab_set_modify(@page_frame)
  end
end

#set_read_only(_value) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1426

def set_read_only(_value)
  if @read_only != _value
    @read_only = _value
    if @read_only
      @text.configure('state'=>'disabled')
      @controller.change_tab_set_read_only(@page_frame)
    else
      @text.configure('state'=>'normal')
      @controller.change_tab_reset_read_only(@page_frame)
    end
  end
end

#show_chars_line(_row, _line, _re, _tag) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1034

def show_chars_line(_row, _line, _re, _tag)
  m = _re.match(_line)
  _end = 0
  while m
    _txt = m.post_match
    _ibegin = _row.to_s+'.'+(m.begin(0)+_end).to_s
    _end = m.end(0) + _end
    _iend = _row.to_s+'.'+(_end.to_s)
    @text.tag_add(_tag,_ibegin, _iend)
    m = _re.match(_txt)
  end
end

#show_spaces ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1014

def show_spaces
  @spaces_show = true
  _row = 1
  @text.value.each{|_line|
    show_chars_line(_row, _line, /[ ^\t]\s*/, 'spaces')
    _row = _row+1
  }
end

#show_tabs ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1024

def show_tabs
  @tabs_show = true
  _row = 1
  @text.value.each{|_line|
    show_chars_line(_row, _line, /\t/, 'tabs')
    _row = _row+1
  }
end

#text_insert(index, chars, *tags, &b) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1289

def text_insert(index, chars, *tags, &b)
  if block_given?
    instance_eval(&b)
  end
  _index = @text.index(index)
  _row, _col  = _index.split('.')
  _row = (_row.to_i - 1).to_s
  chars.each_line {|line|
    @text.insert(_row+'.0', line, *tags)
    if !defined?(m_begin)||(m_begin == nil)
      m_begin = /=begin/.match(line)
    end
    if @highlighting
      if m_begin &&(m_begin.begin(0)==0)
        _ibegin = _row+'.0'
        _iend = _row+'.'+(line.length - 1).to_s
        @text.tag_add('comment',_ibegin, _iend)
      else
        highlightline(_row.to_i, line, false)
      end
    end
    _row = (_row.to_i + 1).to_s
  }
  if defined?(_edit_reset)
    if _edit_reset
      @text.edit_reset
    end
  else
    @text.edit_reset
  end
end

#text_insert_index ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1285

def text_insert_index
  @text.index('insert')
end

#text_see(_index = nil) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 1279

def text_see(_index=nil)
  if _index
    @text.see(_index)
  end
end

#text_value ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 898

def text_value
  return @text.value
end

#unmark_debug(_index) ⇒ Object 



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# File 'ext/ae-editor/ae-editor.rb', line 737

def unmark_debug(_index)
  @text.tag_remove('debug',_index +' linestart', _index +' +1 lines linestart')
  #@text.tag_remove('debug',_index+' linestart', _index+' lineend')
end

#vscroll(mode) ⇒ Object

vertical scrollbar : ON/OFF



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# File 'ext/ae-editor/ae-editor.rb', line 903

def vscroll(mode)
  st = TkGrid.info(@v_scroll)
  if mode && st == [] then
    @v_scroll.grid('row'=>0, 'column'=>1, 'sticky'=>'ns')
  elsif !mode && st != [] then
    @v_scroll.ungrid
  end
  self
end