Class: RubyCurses::MultiTextView

Inherits:
TextView show all
Includes:
ListScrollable
Defined in:
lib/rbcurse/rmultitextview.rb

Overview

A viewable read only box. Can scroll. Extends TextView with ability to load more than one file or content and switch between files (buffers). NOTE: ideally, i should be able to dynamically add this functionality to either Textview or TextArea or even ListBox or Table someday. Should then be a Module rather than a class.

Constant Summary

Constants included from Io

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

Instance Attribute Summary

Attributes included from ListScrollable

#find_offset, #find_offset1, #search_found_ix, #show_caret

Attributes inherited from TextView

#toprow, #winrow

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 ListScrollable

#OLDscrollable_handle_key, #OLDset_focus_on, #_find_next, #_find_prev, #ask_search, #bounds_check, #find_more, #find_next, #find_prev, #focussed_index, #forward_char, #forward_word, #goto_bottom, #goto_last_position, #goto_top, #install_keys, #next_match, #next_row, #previous_row, #scroll_backward, #scroll_forward, #scroll_left, #scroll_right, #selected_item, #set_focus_on, #set_form_row, #set_selection_for_char, #show_caret_func

Methods inherited from TextView

#addcol, #addrowcol, #check_curpos, #cursor_backward, #cursor_forward, #disp_menu, #do_relative_row, #find_first_match, #get_content, #get_window, #getstr, #getvalue, #load_module, #next_line, #paint, #print_borders, #print_foot, #print_title, #repaint, #row_count, #rowcol, #scrollatrow, #set_form_col, #top_row, #wrap_text

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, #getvalue_for_paint, #height, #height=, #hide, #is_double_buffered?, #modified?, #move, #on_enter, #on_leave, #override_graphic, #printstring, #process_key, #remove, #repaint, #repaint_all, #repaint_required, #rowcol, #safe_create_buffer, #set_buffer_modified, #set_buffering, #set_form, #set_form_col, #set_form_row, #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, #wrap_text

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 = nil, config = {}, &block) ⇒ MultiTextView

Returns a new instance of MultiTextView.



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# File 'lib/rbcurse/rmultitextview.rb', line 35

def initialize form = nil, config={}, &block

  super
  @bmanager = BufferManager.new self

end

Instance Method Details

#add(file, title) ⇒ Object

load a file into the textview. This is the preferred method since it lets us add a title too Shucks, this misses wrap_style which the other one has

Parameters:

  • filename (String) 


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# File 'lib/rbcurse/rmultitextview.rb', line 172

def add file, title
  begin
    @current_buffer = @bmanager.add file, title
    $log.debug " file edit got cb : #{@current_buffer} "
    set_current_buffer
  rescue => err
    $error_message = "Error: #{err} "
    @form.window.print_error_message
    Ncurses.beep
    return -1
  end
end

#buffer_at(index) ⇒ Object 



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# File 'lib/rbcurse/rmultitextview.rb', line 184

def buffer_at index
  @current_buffer = @bmanager.element_at index
  $log.debug " buffer_last got #{@current_buffer} "
  set_current_buffer
end

#buffer_delete ⇒ Object 



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# File 'lib/rbcurse/rmultitextview.rb', line 141

def buffer_delete
  if @bmanager.size > 1
    @bmanager.delete_at
    @current_buffer = @bmanager.previous
    set_current_buffer
  else
    perror "Only one buffer. Cannot delete."
  end
end

#buffer_first ⇒ Object 



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# File 'lib/rbcurse/rmultitextview.rb', line 131

def buffer_first
  @current_buffer = @bmanager.first
  $log.debug " buffer_first got #{@current_buffer} "
  set_current_buffer
end

#buffer_last ⇒ Object 



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# File 'lib/rbcurse/rmultitextview.rb', line 136

def buffer_last
  @current_buffer = @bmanager.last
  $log.debug " buffer_last got #{@current_buffer} "
  set_current_buffer
end

#buffer_menu ⇒ Object

this is just a test of the simple “most” menu can use this for next, prev, first, last, new, delete, overwrite etc



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# File 'lib/rbcurse/rmultitextview.rb', line 91

def buffer_menu
  menu = PromptMenu.new self 
  menu.add(menu.create_mitem( 'e', "edit a file", "opened file ", :file_edit ))
  menu.add(menu.create_mitem( 'o', "overwrite file", "opened a file ", :file_overwrite ))
  menu.add(menu.create_mitem( 'l', "list buffers", "list buffers ", :buffers_list ))
  item = menu.create_mitem( 'b', "Buffer Options", "Buffer Options" )
  menu1 = PromptMenu.new( self, "Buffer Options")
  menu1.add(menu1.create_mitem( 'n', "Next", "Switched to next buffer", :buffer_next ))
  menu1.add(menu1.create_mitem( 'p', "Prev", "Switched to previous buffer", :buffer_previous ))
  menu1.add(menu1.create_mitem( 'f', "First", "Switched to first buffer", :buffer_first ))
  menu1.add(menu1.create_mitem( 'l', "Last", "Switched to last buffer", :buffer_last ))
  menu1.add(menu1.create_mitem( 'd', "Delete", "Deleted buffer", :buffer_delete ))
  item.action = menu1
  menu.add(item)
  # how do i know what's available. the application or window should know where to place
  menu.display @form.window, $error_message_row, $error_message_col, $datacolor #, menu
end

#buffer_next ⇒ Object 



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# File 'lib/rbcurse/rmultitextview.rb', line 118

def buffer_next
  perror "No other buffer" and return if @bmanager.size < 2

  @current_buffer = @bmanager.next
  set_current_buffer
end

#buffer_previous ⇒ Object 



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# File 'lib/rbcurse/rmultitextview.rb', line 124

def buffer_previous
  perror "No other buffer" and return if @bmanager.size < 2

  @current_buffer = @bmanager.previous
  $log.debug " buffer_prev got #{@current_buffer} "
  set_current_buffer
end

#buffers_list ⇒ Object 



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# File 'lib/rbcurse/rmultitextview.rb', line 150

def buffers_list
  menu = PromptMenu.new self 
  @bmanager.each_with_index{ |b, ix|
    aproc = Proc.new { buffer_at(ix) }
    name = b.title
    num = ix + 1
    menu.add(menu.create_mitem( num.to_s, name, "Switched to buffer #{ix}", aproc ))
  }
  menu.display @form.window, $error_message_row, $error_message_col, $datacolor
end

#current_buffer ⇒ RBuffer

returns current buffer

Returns:



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# File 'lib/rbcurse/rmultitextview.rb', line 53

def current_buffer
  @bmanager.current
end

#file_edit ⇒ Object

prompts user for filename and opens in buffer Like vim’s :e



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# File 'lib/rbcurse/rmultitextview.rb', line 162

def file_edit
  file = getfilename()
  $log.debug " got file_edit: #{file} "
  return if file == ""
  add file, file
end

#getfilename(prompt = "Enter filename: ", maxlen = 90) ⇒ Object

prompt user for a filename to read in



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# File 'lib/rbcurse/rmultitextview.rb', line 78

def getfilename prompt="Enter filename: ", maxlen=90
  tabc = Proc.new {|str| Dir.glob(str +"*") }
  config={}; config[:tab_completion] = tabc
  #config[:default] = "defaulT"
  $log.debug " inside getstr before call #{$error_message_row} +  #{$error_message_col}  "
  #ret, str = rbgetstr(@form.window, @row+@height-1, @col+1, prompt, maxlen, config)
  ret, str = rbgetstr(@form.window, $error_message_row, $error_message_col, prompt, maxlen, config)
  $log.debug " rbgetstr returned #{ret} , #{str} "
  return "" if ret != 0
  return str
end

#handle_key(ch) ⇒ Object

multi-textview



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# File 'lib/rbcurse/rmultitextview.rb', line 67

def handle_key ch
  # put list as current list and buffer too then super
  #@current_buffer = @bmanager.current
  #@list = @current_buffer.list
  @buffer = @list[@current_index]
  #@buffer = @bmanager.current
  ret = super
  # check for any keys not handled and check our own ones
  return ret # 
end

#init_vars ⇒ Object 



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# File 'lib/rbcurse/rmultitextview.rb', line 41

def init_vars
  super
  bind_key(?:, :buffer_menu)
  bind_key(?e, :file_edit)
  bind_key([?\C-x, ?f], :file_edit)
  bind_key([?\C-x, ?k], :buffer_delete)
  bind_key([?\C-x, ?\C-b], :buffers_list)
  # easily cycle using p. n is used for next search.
  bind_key(?p, :buffer_previous)
end

#perror(errmess = $error_message) ⇒ Object 



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# File 'lib/rbcurse/rmultitextview.rb', line 195

def perror errmess=$error_message
  @form.window.print_error_message errmess
end

#set_content(list, wrap = :WRAP_NONE) ⇒ Object

send in a list e.g. set_content File.open(“README.txt”,“r”).readlines set wrap at time of passing :WRAP_NONE :WRAP_WORD

See Also:



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# File 'lib/rbcurse/rmultitextview.rb', line 61

def set_content list, wrap = :WRAP_NONE
  ret = super
#  buff = @bmanager.add_content @list
  return ret
end

#set_current_buffer ⇒ Object 



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# File 'lib/rbcurse/rmultitextview.rb', line 189

def set_current_buffer
  @current_index = @current_buffer.current_index
  @curpos = @current_buffer.curpos
  @title = @current_buffer.title
  @list = @current_buffer.list
end