Class: BufferList

Inherits:
Object
  • Object
show all
Defined in:
lib/vimamsa/buffer_list.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ BufferList

Returns a new instance of BufferList.



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# File 'lib/vimamsa/buffer_list.rb', line 26

def initialize()
  @last_dir = File.expand_path(".")
  super
  @current_buf = 0
  @list = []
  @h = {}
  reset_navigation
end

Instance Attribute Details

#current_buf ⇒ Object (readonly)

Returns the value of attribute current_buf.



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# File 'lib/vimamsa/buffer_list.rb', line 23

def current_buf
  @current_buf
end

#last_dir ⇒ Object

Returns the value of attribute last_dir.



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# File 'lib/vimamsa/buffer_list.rb', line 23

def last_dir
  @last_dir
end

#last_file ⇒ Object (readonly)

Returns the value of attribute last_file.



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# File 'lib/vimamsa/buffer_list.rb', line 23

def last_file
  @last_file
end

#list ⇒ Object

Returns the value of attribute list.



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# File 'lib/vimamsa/buffer_list.rb', line 24

def list
  @list
end

Instance Method Details

#<<(_buf) ⇒ Object

lastdir = File.expand_path(“.”) if lastdir.nil?



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# File 'lib/vimamsa/buffer_list.rb', line 36

def <<(_buf)
  vma.buf = _buf
  self.add(_buf)

  $hook.call(:change_buffer, vma.buf)
  vma.gui.set_current_buffer(vma.buf.id) #TODO: handle elswhere?
  # vma.buf.view.set_cursor_pos(vma.buf.pos)  #TODO: handle elswhere?
  update_last_dir(_buf)
  vma.gui.file_panel_refresh
end

#add(_buf) ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 47

def add(_buf)
  @list << _buf
  @h[_buf.id] = _buf
end

#add_current_buf_to_history ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 102

def add_current_buf_to_history()
  @h[@current_buf].update_access_time
end

#close_buffer(idx, from_recent = false, auto_open: true) ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 232

def close_buffer(idx, from_recent = false, auto_open: true)
  return if idx.nil?
  bu = @h[idx]
  return if bu.nil?

  bufname = bu.basename
  message("Closed buffer #{bufname}")

  @list.delete(@h[idx])
  @h.delete(idx)
  gui_close_buffer(idx)
  vma.gui.file_panel_refresh

  if auto_open
    @current_buf = get_last_non_active_buffer
    if @list.size == 0 or @current_buf.nil?
      bu = Buffer.new("\n")
      add(bu)
      @current_buf = bu.id
    end
    set_current_buffer(@current_buf, false)
  end
end

#close_current_buffer(from_recent = false) ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 284

def close_current_buffer(from_recent = false)
  close_buffer(@current_buf, from_recent)
end

#close_other_buffer(idx) ⇒ Object

Close buffer in the background



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# File 'lib/vimamsa/buffer_list.rb', line 257

def close_other_buffer(idx)
  close_buffer(idx, auto_open: false)
end

#close_scrap_buffers ⇒ Object

TODO def close_all_buffers() message(“Closing all buffers”) while @list.size > 0 if self.size == 1 close_buffer(0) break else close_buffer(0) end end # self << Buffer.new(“n”) end



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# File 'lib/vimamsa/buffer_list.rb', line 275

def close_scrap_buffers()
  l = @list.clone
  for bu in l
    if !bu.pathname
      close_buffer(bu.id)
    end
  end
end

#delete_current_buffer(from_recent = false) ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 288

def delete_current_buffer(from_recent = false)
  fn = buf.fname
  close_buffer(@current_buf)
  #TODO: confirm with user, "Do you want to delete file X"
  if is_existing_file(fn)
    message("Deleting file: #{fn}")
    File.delete(fn)
  end
end

#each(&block) ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 57

def each(&block)
  for x in slist
    block.call(x)
  end
end

#get_buffer_by_filename(fname) ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 91

def get_buffer_by_filename(fname)
  #TODO: check using stat/inode?  http://ruby-doc.org/core-1.9.3/File/Stat.html#method-i-ino
  b = @list.find { |b| b.fname == fname }
  return b.id unless b.nil?
  return nil
end

#get_buffer_by_id(id) ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 98

def get_buffer_by_id(id)
  return @h[id]
end

#get_last_dir ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 166

def get_last_dir
  return File.expand_path(@last_dir)
end

#get_last_non_active_buffer ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 225

def get_last_non_active_buffer
  for bu in slist.reverse
    return bu.id if !bu.is_active?
  end
  return nil
end

#get_last_visited_id ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 70

def get_last_visited_id
  last_buf = nil
  for i in 0..(slist.size - 1)
    next if slist[i].is_active?
    last_buf = slist[i].id
  end
  return last_buf
end

#history_switch(dir = -1)) ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 174

def history_switch(dir = -1)
  # -1: from newest towards oldest
  # +1: from oldest towards newest

  @navigation_idx += dir * -1
  @navigation_idx = 0 if @navigation_idx >= list.size
  @navigation_idx = list.size - 1 if @navigation_idx < 0

  # most recent is at end of slist
  b = slist[-1 - @navigation_idx]
  puts "@navigation_idx=#{@navigation_idx}"
  non_active =  slist.select{|x|!x.is_active?}
  return if non_active.size == 0

  # Take another one from the history if buffer is already open in a window (active)
  navtmp = @navigation_idx
  i = 1
  while b.is_active?
    pp "b.is_active b=#{b.id}"
    navtmp += dir * -1
    b = slist[-1 - navtmp]
    if b.nil? # went past the beginning or end of array slist
      # Start from the end
      if navtmp != 0 and dir == -1 # did not already start from the end
        navtmp = 0
        i = 0
        b = slist[-1 - navtmp]
      elsif navtmp == list.size and dir == 1
        navtmp = list.size
        i = 0
        b = slist[-1 - navtmp]
      else
        return # No buffer exists which is not active already
      end
    end
    i += 1
  end
  @navigation_idx = navtmp

  pp "IND:#{@navigation_idx} RECENT:#{slist.collect { |x| x.fname }.join("\n")}"
  set_current_buffer(b.id, false)
end

#history_switch_backwards ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 217

def history_switch_backwards()
  history_switch(-1)
end

#history_switch_forwards ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 221

def history_switch_forwards()
  history_switch(+1)
end

#print_by_access_time ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 63

def print_by_access_time
  slist.reverse.each_with_index do |b, i|
    name = b.fname || "(untitled)"
    puts "#{i + 1}. #{b.access_time.strftime('%H:%M:%S')} #{name}"
  end
end

#reset_navigation ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 170

def reset_navigation
  @navigation_idx = 0
end

#set_current_buffer(idx, update_history = true) ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 110

def set_current_buffer(idx, update_history = true)
  # Set update_history = false if we are only browsing

  if !vma.buf.nil? and vma.kbd.get_scope != :editor
    # Save keyboard mode status of old buffer when switching buffer
    vma.buf.mode_stack = vma.kbd.default_mode_stack.clone
  end
  return if !@h[idx]
  vma.buf = bu = @h[idx]
  update_last_dir(vma.buf)
  @current_buf = idx
  debug "SWITCH BUF. bufsize:#{@list.size}, curbuf: #{@current_buf}"

  vma.hook.call(:change_buffer, vma.buf)

  bu.set_active # TODO
  bu.update_access_time if update_history
  reset_navigation if update_history
  vma.gui.set_current_buffer(idx)
  vma.gui.file_panel_refresh
  vma.gui.func_panel_refresh

  #TODO: delete?
  # if !vma.buf.mode_stack.nil? and vma.kbd.get_scope != :editor #TODO
  # debug "set kbd mode stack #{vma.buf.mode_stack}  #{vma.buf.id}", 2
  # Reload previously saved keyboard mode status
  # vma.kbd.set_mode_stack(vma.buf.mode_stack.clone) #TODO:needed?
  # vma.kbd.set_mode_stack([vma.buf.default_mode])
  # end
  # vma.kbd.set_mode_to_default if vma.kbd.get_scope != :editor

  vma.buf.refresh_title

  if vma.buf.fname
    @last_dir = File.dirname(vma.buf.fname)
  end

  # hpt_scan_images() if cnf.debug? # experimental
  return bu
end

#set_current_buffer_by_id(idx, update_history = true) ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 106

def set_current_buffer_by_id(idx, update_history = true)
  set_current_buffer(idx, update_history)
end

#size ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 87

def size
  return @list.size
end

#slist ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 52

def slist
  # TODO: implement using heap/priorityque
  @list.sort_by! { |x| x.access_time }
end

#switch_to_last_buf ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 79

def switch_to_last_buf()
  debug "SWITCH TO LAST BUF:"
  last_buf = slist[-2]
  if !last_buf.nil?
    set_current_buffer(last_buf.id)
  end
end

#to_s ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 151

def to_s
  return self.class.to_s
end

#update_last_dir(buf) ⇒ Object 



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# File 'lib/vimamsa/buffer_list.rb', line 155

def update_last_dir(buf)
  if buf.fname
    @last_dir = File.dirname(buf.fname)
    @last_file = buf.fname
  end
end