Class: TECSCDE::ChangeSetControl::ChangeSetManager

Inherits:
Object
  • Object
show all
Defined in:
lib/tecscde/change_set_control/change_set_manager.rb

Overview

ChangeSetMangager class

contain all changes & execute undo

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ChangeSetManager

Returns a new instance of ChangeSetManager.



6
7
8
9
10
 
# File 'lib/tecscde/change_set_control/change_set_manager.rb', line 6

def initialize
  @change_no = 0
  @change_set_list = []
  @change_set_next = ChangeSet.new(@change_no)
end

Instance Method Details

#add_change_set(tm_object) ⇒ Object

ChangeSetManager#add_change_set

at the time modifying tm_object, record only the changed tm_object



14
15
16
17
 
# File 'lib/tecscde/change_set_control/change_set_manager.rb', line 14

def add_change_set(tm_object)
  # TECSCDE.logger.info("add_change_set #{tm_object.class} change_set=#{@change_no}")
  @change_set_next.add(tm_object)
end

#modified? ⇒ Boolean

Returns:

  • (Boolean) 


57
58
59
 
# File 'lib/tecscde/change_set_control/change_set_manager.rb', line 57

def modified?
  @change_no > 1
end

#redo ⇒ Object 



50
51
52
53
54
55
 
# File 'lib/tecscde/change_set_control/change_set_manager.rb', line 50

def redo
  return if @change_set_list.length <= @change_no + 1
  @change_no += 1
  TECSCDE.logger.info("* redo change_no=#{@change_no}")
  @change_set_list[@change_no].apply
end

#set_undo_point ⇒ Object 



19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
 
# File 'lib/tecscde/change_set_control/change_set_manager.rb', line 19

def set_undo_point
  count = @change_set_next.set_undo_point
  if count > 0
    # TECSCDE.logger.info("* set_undo_point change_no=#{@change_no}, count=#{count}")
    # p "* set_undo_point change_no=#{@change_no}, count=#{count}\n"
    @change_set_list[@change_no] = @change_set_next
    @change_no += 1
    @change_set_next = ChangeSet.new(@change_no)

    if @change_set_list.length > @change_no
      TECSCDE.logger.info("truncate undo buffer #{@change_set_list.length} to #{@change_no}")
      # print( "range: #{(@change_no)..(@change_set_list.length)-1}\n" )
      # p "length0=#{@change_set_list.length}"
      @change_set_list.slice!(@change_no..(@change_set_list.length - 1))
      # p "length1=#{@change_set_list.length}"
    end
  else
    TECSCDE.logger.info("* set_undo_point: nothing changed")
  end
end

#undo ⇒ Object

assumed undo is done just after set_undo_point (this means @change_set_next has no contents)



41
42
43
44
45
46
47
48
 
# File 'lib/tecscde/change_set_control/change_set_manager.rb', line 41

def undo
  return unless modified?
  @change_no -= 1
  TECSCDE.logger.info("* undo change_no=#{@change_no}")
  @change_set_list[@change_no].apply
  # TECSCDE.logger.info("* undo1 change_no=#{@change_no}")
  @change_set_next = ChangeSet.new(@change_no)
end