Module: Canis::MultiBuffers

Extended by:
MultiBuffers
Included in:
MultiBuffers
Defined in:
lib/canis/core/include/multibuffer.rb

Overview

TODO ?? allow setting of a limit, so in some cases where we keep adding programatically, the TODO: maintain cursor and line number so user can revert to same point. this will have to be

updated by buffer_next and others.

Done: need to be able to set multiple file names. which are read in only when

buffer is accessed. filename to be maintained and used as title.
== CHANGE: 
allow filename to be sent, rather than array. Array was very limiting since it 
 did not have a name to list or goto a buffer with. Also, now we can add file names that
 are read only if the buffer is selected.

Instance Method Summary collapse

Instance Method Details

#add_content(text, config = {}) ⇒ Object

add content to buffers of a textview

Parameters:

  • text, (Array) —

    or String (filename)

  • options, (Hash) —

    typically :content_type => :ansi or :tmux, and :title



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# File 'lib/canis/core/include/multibuffer.rb', line 26

def add_content text, config={}
  unless @_buffers
    bind_key(?\M-n, :buffer_next)
    bind_key(?\M-p, :buffer_prev)
    bind_key(KEY_BACKSPACE, :buffer_prev) # backspace, already hardcoded in textview !
    bind_key(?:, :buffer_menu)
  end
  @_buffers ||= []
  @_buffers_conf ||= []
  @_buffers << text
  if text.is_a? String
    config[:filename] = text
    config[:title] ||= text
  end
  @_buffers_conf << config
  @_buffer_ctr ||= 0
  $log.debug "XXX:  HELP adding text #{@_buffers.size} "
end

#add_files(filearray, config = {}) ⇒ Object

supply an array of files to the multibuffer. These will be read

as the user presses next or last etc.



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# File 'lib/canis/core/include/multibuffer.rb', line 47

def add_files filearray, config={}
  filearray.each do |e| add_content(e, config.dup); end
end

#buffer_at(index) ⇒ Object 



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# File 'lib/canis/core/include/multibuffer.rb', line 112

def buffer_at index
  buffer_update_info
  @_buffer_ctr = index
  l = @_buffers[index]
  if l
    populate_buffer_from_filename index
    l = @_buffers[index]
    set_content l, @_buffers_conf[index]
    buffer_update_position


  end
end

#buffer_last ⇒ Object 



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# File 'lib/canis/core/include/multibuffer.rb', line 99

def buffer_last
  buffer_update_info
  @_buffer_ctr = @_buffers.count - 1
  x = @_buffer_ctr
  l = @_buffers.last
  if l
    populate_buffer_from_filename x
    l = @_buffers[x]
    $log.debug "  calling set_content with #{l.class} "
    set_content l, @_buffers_conf.last
    buffer_update_position
  end
end

#buffer_menu ⇒ Object

display a menu so user can do buffer management However, how can application add to these. Or disable, such as when we add buffer delete or buffer insert or edit



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# File 'lib/canis/core/include/multibuffer.rb', line 132

def buffer_menu
  menu = PromptMenu.new self do
    item :n, :buffer_next
    item :p, :buffer_prev
    item :b, :scroll_backward
    item :f, :scroll_forward
    item :l, :list_buffers
    item :q, :close
    submenu :m, "submenu..." do
      item :p, :goto_last_position
      item :r, :scroll_right
      item :l, :scroll_left
    end
  end
  menu.display_new :title => "Buffer Menu"
end

#buffer_next ⇒ Object

display next buffer



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# File 'lib/canis/core/include/multibuffer.rb', line 52

def buffer_next
  buffer_update_info
  @_buffer_ctr += 1
  x = @_buffer_ctr
  l = @_buffers[x]
  if l
    populate_buffer_from_filename x
  else
    @_buffer_ctr = 0 
  end
  set_content @_buffers[@_buffer_ctr], @_buffers_conf[@_buffer_ctr]
  buffer_update_position
end

#buffer_prev ⇒ Object

display previous buffer if any



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# File 'lib/canis/core/include/multibuffer.rb', line 82

def buffer_prev
  buffer_update_info
  if @_buffer_ctr < 1
    buffer_last
    return
  end
  @_buffer_ctr -= 1 if @_buffer_ctr > 0
  x = @_buffer_ctr
  l = @_buffers[x]
  if l
    populate_buffer_from_filename x
    l = @_buffers[x]
    $log.debug "bp calling set_content with #{l.class} "
    set_content l, @_buffers_conf[x]
    buffer_update_position
  end
end

#buffer_update_info ⇒ Object 



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# File 'lib/canis/core/include/multibuffer.rb', line 160

def buffer_update_info
  x = @_buffer_ctr || 0
  @_buffers_conf[x][:current_index] = @current_index || 0
  @_buffers_conf[x][:curpos] = @curpos || 0
end

#buffer_update_position ⇒ Object 



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# File 'lib/canis/core/include/multibuffer.rb', line 165

def buffer_update_position
  x = @_buffer_ctr || 0
  ci = (@_buffers_conf[x][:current_index] || 0)
  goto_line ci
  @curpos = (@_buffers_conf[x][:curpos] || 0)
end

#close ⇒ Object

close window, a bit clever, we really don’t know what the CLOSE_KEY is



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# File 'lib/canis/core/include/multibuffer.rb', line 126

def close
  @graphic.ungetch(?q.ord)
end

#list_buffers ⇒ Object

pops up a list of buffers using titles allowing the user to select Based on selection, that buffer is displayed.



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# File 'lib/canis/core/include/multibuffer.rb', line 150

def list_buffers
  arr = []
  @_buffers_conf.each_with_index do |e, i|
    t = e[:title] || "no title for #{i}"
    #$log.debug "  TITLE is #{e.title} , t is #{t} "
    arr << t
  end
  ix = popuplist arr
  buffer_at ix
end

#populate_buffer_from_filename(x) ⇒ Object 



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# File 'lib/canis/core/include/multibuffer.rb', line 65

def populate_buffer_from_filename x
  l = @_buffers[x]
  if l
    if l.is_a? String
      if File.directory? l
        Dir.chdir(l)
        arr = Dir.entries(".")
        @_buffers[x] = arr
      else
        arr = File.open(l,"r").read.split("\n")
        @_buffers[x] = arr
      end
    end
  end
end