lib/plugins/movelist/simple_movelist.rb

   1 require 'plugins/plugin'
   2
   3 class SimpleMoveList < Qt::ListView
   4   include Plugin
   5   include Observer
   6
   7   plugin :name => 'Simple Move List',
   8          :keywords => %w(movelist)
   9
  10   class LinearHistoryModel < Qt::StringListModel
  11     include Observer
  12     include Observable
  13
  14     def initialize(match)
  15       super([])
  16       @history = match.history
  17       @serializer = match.game.serializer.new(:compact)
  18
  19       @history.add_observer(self)
  20
  21       insert_rows(0, @history.size)
  22       (0...@history.size).each do |i|
  23         update_row(i)
  24       end
  25     end
  26
  27     def on_new_move
  28       if @history.size > rowCount
  29         insert_rows(rowCount, @history.size - rowCount)
  30       else
  31         remove_rows(@history.size, rowCount - @history.size)
  32       end
  33       update_row(@history.current)
  34       fire_changed
  35     end
  36
  37     def on_forward
  38       fire_changed
  39     end
  40
  41     def on_back
  42       fire_changed
  43     end
  44
  45     def fire_changed
  46       fire :change_current => index(@history.current, 0)
  47     end
  48
  49     def move(i)
  50       if i == 0
  51         'Mainline'
  52       else
  53         state = @history[i - 1].state
  54         move = @history[i].move
  55         san = @serializer.serialize(move, state)
  56
  57         count = i / 2 + 1
  58         dots = if i % 2 == 0
  59           '.'
  60         else
  61           '...'
  62         end
  63
  64         "#{count}#{dots} #{san}"
  65       end
  66     end
  67
  68     def update_row(i)
  69       set_data(index(i, 0), move(i), Qt::DisplayRole)
  70     end
  71
  72     def flags(index)
  73       if index.isValid
  74         Qt::ItemIsSelectable | Qt::ItemIsEnabled
  75       else
  76         Qt::NoItemFlags
  77       end
  78     end
  79   end
  80
  81   def initialize(controller, opts = {})
  82     super(controller.table)
  83     @controller = controller
  84     self.font = opts[:font] if opts[:font]
  85
  86     @controller.table.add_observer(self)
  87   end
  88
  89   def on_reset(match)
  90     self.model = LinearHistoryModel.new(match)
  91     model.observe(:change_current) do |current|
  92       selection_model.select(current,
  93         Qt::ItemSelectionModel::ClearAndSelect)
  94     end
  95     sig = 'selectionChanged(QItemSelection, QItemSelection)'
  96     selection_model.on(sig) do |selected, deselected|
  97       @controller.go_to(selected.indexes.first.row)
  98     end
  99   end
 100 end
 101