Class: RubyCurses::OldTextView

Inherits:
Widget
  • Object
show all
Includes:
Scrollable
Defined in:
lib/rbcurse/rform.rb

Overview

A viewable read only box. Can scroll. Intention is to be able to change content dynamically - the entire list. Use set_content to set content, or just update the list attrib TODO - 

- searching, goto line - DONE

Constant Summary

Constants included from Io

Io::ERROR_COLOR_PAIR, Io::FOOTER_COLOR_PAIR, Io::LINEONE, Io::MAIN_WINDOW_COLOR_PAIR

Instance Attribute Summary collapse

Attributes inherited from Widget

#col_offset, #cols_panned, #config, #curpos, #ext_col_offset, #ext_row_offset, #form, #id, #parent_component, #row_offset, #rows_panned, #should_create_buffer, #state

Instance Method Summary collapse

Methods included from Scrollable

#down, #focussed_index, #goto_end, #goto_start, #init_scrollable, #left, #next_match, #paint, #post_key, #pre_key, #right, #scroll_backward, #scroll_forward, #scrollable_handle_key, #selected_item, #set_focus_on, #set_selection_for_char, #show_focus, #show_focus_on_row, #up

Methods inherited from Widget

#OLDbind_key, #buffer_to_screen, #buffer_to_window, #create_buffer, #destroy, #destroy_buffer, #focus, #get_buffer, #get_color, #get_preferred_size, #getvalue_for_paint, #height, #height=, #hide, #init_vars, #is_double_buffered?, #modified?, #move, #on_enter, #on_leave, #override_graphic, #printstring, #process_key, #remove, #repaint_all, #repaint_required, #safe_create_buffer, #set_buffer_modified, #set_buffering, #set_form, #set_modified, #setformrowcol, #setrowcol, #show, #text_variable, #unbind_key, #width, #width=

Methods included from Io

#askchoice, #askyesno, #askyesnocancel, #clear_error, #clear_this, #get_string, #newaskyesno, #old_print_header, #old_print_top_right, #print_action, #print_error, #print_footer_help, #print_header, #print_headers, #print_help, #print_help_page, #print_in_middle, #print_key_labels, #print_key_labels_row, #print_screen_labels, #print_status, #print_this, #print_top_right, #rbgetstr

Methods included from Utils

#_process_key, #bind_key, #clean_string!, #get_color, #keycode_tos, #repeatm

Methods included from ConfigSetup

#cget, #config_setup, #configure, #variable_set

Methods included from EventHandler

#bind, #fire_handler, #fire_property_change

Methods included from DSL

#OLD_method_missing

Constructor Details

#initialize(form, config = {}, &block) ⇒ OldTextView

Returns a new instance of OldTextView.



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# File 'lib/rbcurse/rform.rb', line 644

def initialize form, config={}, &block
  @focusable = true
  @editable = false
  @left_margin = 1
  @row = 0
  @col = 0
  @show_focus = false  # don't highlight row under focus
  @list = []
  super
  @row_offset = @col_offset = 1
  @orig_col = @col
  # this does result in a blank line if we insert after creating. That's required at 
  # present if we wish to only insert
  @scrollatrow = @height-2
  @content_rows = @list.length
  @win = @form.window
  init_scrollable
  print_borders
  @maxlen ||= @width-2
end

Instance Attribute Details

#prow ⇒ Object (readonly)

the row on which cursor/focus is



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# File 'lib/rbcurse/rform.rb', line 640

def prow
  @prow
end

#toprow ⇒ Object (readonly)

the toprow in the view (offsets are 0)



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# File 'lib/rbcurse/rform.rb', line 639

def toprow
  @toprow
end

#winrow ⇒ Object (readonly)

the row in the viewport/window



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# File 'lib/rbcurse/rform.rb', line 641

def winrow
  @winrow
end

Instance Method Details

#addcol(num) ⇒ Object 



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# File 'lib/rbcurse/rform.rb', line 824

def addcol num
  @form.addcol num
end

#addrowcol(row, col) ⇒ Object 



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# File 'lib/rbcurse/rform.rb', line 827

def addrowcol row,col
  @form.addrowcol row, col
end

#cursor_backward ⇒ Object 



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# File 'lib/rbcurse/rform.rb', line 830

def cursor_backward
  if @curpos > 0
    @curpos -= 1
    addcol -1
  elsif @pcol > 0 # XXX added 2008-11-26 23:05 
    @pcol -= 1   
  end
end

#cursor_forward ⇒ Object 



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# File 'lib/rbcurse/rform.rb', line 815

def cursor_forward
  if @curpos < @width and @curpos < @maxlen-1 # else it will do out of box
    @curpos += 1
    addcol 1
  else
    # XXX 2008-11-26 23:03 trying out
    @pcol += 1 if @pcol <= @buffer.length
  end
end

#do_relative_row(num) {|| ... } ⇒ Object

Yields:

  • () 


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# File 'lib/rbcurse/rform.rb', line 841

def do_relative_row num
  yield @list[@prow+num] 
end

#find_first_match(regex) ⇒ Object

returns row of first match of given regex (or nil if not found)



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# File 'lib/rbcurse/rform.rb', line 689

def find_first_match regex
  @list.each_with_index do |row, ix|
    return ix if !row.match(regex).nil?
  end
  return nil
end

#get_content ⇒ Object

FOR scrollable ###



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# File 'lib/rbcurse/rform.rb', line 730

def get_content
  @list
end

#get_window ⇒ Object 



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# File 'lib/rbcurse/rform.rb', line 733

def get_window
  @form.window
end

#getvalue ⇒ Object 



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# File 'lib/rbcurse/rform.rb', line 741

def getvalue
  @list
end

#handle_key(ch) ⇒ Object

textview

scroll left right DONE



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# File 'lib/rbcurse/rform.rb', line 746

def handle_key ch
  @buffer = @list[@prow]
  if @buffer.nil? and @list.length == 0
    @list << "\r"
    @buffer = @list[@prow]
  end
  return if @buffer.nil?
  $log.debug " before: curpos #{@curpos} blen: #{@buffer.length}"
  if @curpos > @buffer.length
    addcol(@buffer.length-@curpos)+1
    @curpos = @buffer.length
  end
  $log.debug "TV after loop : curpos #{@curpos} blen: #{@buffer.length}"
  pre_key
  case ch
  when ?\C-n.getbyte(0)
    scroll_forward
  when ?\C-p.getbyte(0)
    scroll_backward
  when ?0.getbyte(0), ?\C-[.getbyte(0)
    goto_start #start of buffer # cursor_start
  when ?\C-].getbyte(0)
    goto_end # end / bottom cursor_end
  when KEY_UP
    #select_prev_row
    ret = up
    #addrowcol -1,0 if ret != -1 or @winrow != @oldwinrow                 # positions the cursor up 
    @form.row = @row + 1 + @winrow
  when KEY_DOWN
    ret = down
    @form.row = @row + 1 + @winrow
  when KEY_LEFT
    cursor_backward
  when KEY_RIGHT
    cursor_forward
  when KEY_BACKSPACE, 127
    cursor_backward
  when 330
    cursor_backward
  when ?\C-a.getbyte(0)
    # take care of data that exceeds maxlen by scrolling and placing cursor at start
    set_form_col 0
    @pcol = 0
  when ?\C-e.getbyte(0)
    # take care of data that exceeds maxlen by scrolling and placing cursor at end
    blen = @buffer.rstrip.length
    if blen < @maxlen
      set_form_col blen
    else
      @pcol = blen-@maxlen
      set_form_col @maxlen-1
    end
  else
    $log.debug("TEXTVIEW XXX ch #{ch}")
    return :UNHANDLED
  end
  post_key
  # XXX 2008-11-27 13:57 trying out
  set_form_row
end

#next_line ⇒ Object 



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# File 'lib/rbcurse/rform.rb', line 838

def next_line
  @list[@prow+1]
end

#print_borders ⇒ Object 



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# File 'lib/rbcurse/rform.rb', line 704

def print_borders
  window = @form.window
  color = $datacolor
  window.print_border @row, @col, @height, @width, color
  print_title
=begin
  hline = "+%s+" % [ "-"*(width-((1)*2)) ]
  hline2 = "|%s|" % [ " "*(width-((1)*2)) ]
  window.printstring(row=startrow, col=startcol, hline, color)
  print_title
  (startrow+1).upto(startrow+height-1) do |row|
    window.printstring( row, col=startcol, hline2, color)
  end
  window.printstring( startrow+height, col=startcol, hline, color)
=end
  
end

#print_foot ⇒ Object 



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# File 'lib/rbcurse/rform.rb', line 724

def print_foot
  @footer_attrib ||= Ncurses::A_REVERSE
  footer = "R: #{@prow+1}, C: #{@curpos}, #{@list.length} lines  "
  @form.window.printstring( @row + @height, @col+2, footer, $datacolor, @footer_attrib) 
end

#print_title ⇒ Object 



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# File 'lib/rbcurse/rform.rb', line 721

def print_title
  @form.window.printstring( @row, @col+(@width-@title.length)/2, @title, $datacolor, @title_attrib) unless @title.nil?
end

#repaint ⇒ Object

FOR scrollable ###



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# File 'lib/rbcurse/rform.rb', line 737

def repaint # textview
  paint
  print_foot if @print_footer
end

#row_count ⇒ Object 



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# File 'lib/rbcurse/rform.rb', line 684

def row_count
  @list.length
end

#rowcol ⇒ Object 



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# File 'lib/rbcurse/rform.rb', line 695

def rowcol
  #$log.debug "textarea rowcol : #{@row+@row_offset+@winrow}, #{@col+@col_offset}"
  return @row+@row_offset+@winrow, @col+@col_offset
end

#scrollatrow ⇒ Object

—- for listscrollable —- ##



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# File 'lib/rbcurse/rform.rb', line 681

def scrollatrow
  @height - 2
end

#set_content(list) ⇒ Object

send in a list e.g. set_content File.open(“README.txt”,“r”).readlines



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# File 'lib/rbcurse/rform.rb', line 668

def set_content list
  @list = list
end

#set_form_col(col = @curpos) ⇒ Object

set cursor on correct column tview



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# File 'lib/rbcurse/rform.rb', line 811

def set_form_col col=@curpos
  @curpos = col
  @form.col = @orig_col + @col_offset + @curpos
end

#set_form_row ⇒ Object

puts cursor on correct row.



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# File 'lib/rbcurse/rform.rb', line 807

def set_form_row
  @form.row = @row + 1 + @winrow
end

#top_row(*val) ⇒ Object

display this row on top



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# File 'lib/rbcurse/rform.rb', line 672

def top_row(*val)
  if val.empty?
    @toprow
  else
    @toprow = val[0] || 0
    @prow = val[0] || 0
  end
end

#wrap_text(txt, col = @maxlen) ⇒ Object 



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# File 'lib/rbcurse/rform.rb', line 699

def wrap_text(txt, col = @maxlen)
  $log.debug "inside wrap text for :#{txt}"
  txt.gsub(/(.{1,#{col}})( +|$\n?)|(.{1,#{col}})/,
           "\\1\\3\n") 
end