From e05d5e1e5f478985a01b8cf350f307b5c4a90d57 Mon Sep 17 00:00:00 2001
From: Paolo Capriotti <p.capriotti@gmail.com>
Date: Tue, 23 Jun 2009 21:49:46 +0200
Subject: [PATCH] Simple linear move list.

---
 lib/history.rb                          | 60 +++++++++++++++++++++++++++++----
 lib/mainwindow.rb                       | 10 ++++++
 lib/plugins/clocks/digital.rb           |  1 +
 lib/plugins/movelist/simple_movelist.rb | 56 ++++++++++++++++++++++++++++++
 lib/qtutils.rb                          | 28 +++++++++++++++
 5 files changed, 148 insertions(+), 7 deletions(-)
 create mode 100644 lib/plugins/movelist/simple_movelist.rb

diff --git a/lib/history.rb b/lib/history.rb
index cdd42dd..e28a9a8 100644
--- a/lib/history.rb
+++ b/lib/history.rb
@@ -1,16 +1,18 @@
 require 'observer_utils.rb'
 
-class History
+class History < Qt::AbstractListModel
   include Enumerable
   include Observer
+  include ModelUtils
   
   attr_reader :current
   
-  Item = Struct.new(:state, :move)
+  Item = Struct.new(:state, :move, :text)
   OutOfBound = Class.new(Exception)
 
   def initialize(state)
-    @history = [Item.new(state.dup, nil)]
+    super(nil)
+    @history = [Item.new(state.dup, nil, "Mainline")]
     @current = 0
   end
   
@@ -19,10 +21,16 @@ class History
   end
   
   def add_move(state, move)
-    item = Item.new(state.dup, move)
-    @history = @history[0..@current]
-    @history << item
-    @current = @history.size - 1
+    item = Item.new(state.dup, move, nil)
+    
+    removing_rows(nil, @current + 1, @history.size - 1) do
+      @history = @history[0..@current]
+    end
+
+    inserting_rows(nil, @current + 1, @current + 1) do
+      @history << item
+      @current = @history.size - 1
+    end
   end
   
   def forward
@@ -50,4 +58,42 @@ class History
   def size
     @history.size
   end
+  
+  def [](index)
+    @history[index]
+  end
+  
+  # model interface
+  
+  # set a serializer for this model
+  # if no serializer has been set, it will
+  # be impossible to use it with a view
+  def serializer=(ser)
+    @serializer = ser
+  end
+  
+  def data(index, role)
+    if @serializer and role == Qt::DisplayRole
+      unless @history[index.row].text
+        state = @history[index.row - 1].state
+        move = @history[index.row].move
+        san = @serializer.serialize(move, state)
+        
+        count = index.row / 2 + 1
+        dots = if index.row % 2 == 0
+          '.'
+        else
+          '...'
+        end
+        
+        @history[index.row].text = "#{count}#{dots} #{san}"
+      end
+      @history[index.row].text
+    end
+  end
+  
+  def rowCount(parent)
+    size
+  end
+  
 end
diff --git a/lib/mainwindow.rb b/lib/mainwindow.rb
index de31c25..7fdc277 100644
--- a/lib/mainwindow.rb
+++ b/lib/mainwindow.rb
@@ -82,6 +82,16 @@ private
     history = History.new(state)
     @controller = Controller.new(scene, elements, game, history)
     
+    movelist = @loader.get_matching(%w(movelist)).
+      new(parent, history, game)
+    
+    movelist_dock = Qt::DockWidget.new(self)
+    movelist_dock.widget = movelist
+    movelist_dock.window_title = KDE.i18n("Move list")
+    movelist_dock.object_name = "movelist"
+    add_dock_widget(Qt::LeftDockWidgetArea, movelist_dock, Qt::Vertical)
+    movelist_dock.show
+    
     self.central_widget = table
   end
 end
diff --git a/lib/plugins/clocks/digital.rb b/lib/plugins/clocks/digital.rb
index f1a4749..207d331 100644
--- a/lib/plugins/clocks/digital.rb
+++ b/lib/plugins/clocks/digital.rb
@@ -1,5 +1,6 @@
 require 'plugins/plugin'
 require 'constrained_text_item'
+require 'board/item_bag'
 
 class DigitalClock < Qt::GraphicsItemGroup
   include Plugin
diff --git a/lib/plugins/movelist/simple_movelist.rb b/lib/plugins/movelist/simple_movelist.rb
new file mode 100644
index 0000000..a6791fb
--- /dev/null
+++ b/lib/plugins/movelist/simple_movelist.rb
@@ -0,0 +1,56 @@
+require 'plugins/plugin'
+
+class SimpleMoveList < Qt::ListView
+  include Plugin
+  
+  plugin :name => 'Simple Move List',
+         :keywords => %w(movelist)
+  
+  def initialize(parent, history, game, opts = {})
+    super(parent)
+#     self.model = Qt::StringListModel.new
+#     @history.add_observer(self)
+#     moves = (1...@history.size).map do |index|
+#       move(index)
+#     end
+#     self.model.set_string_list(moves)
+
+    history.serializer = game.serializer.new(:compact)
+    self.model = history
+    
+#     if opts[:font]
+      self.font = opts[:font] if opts[:font]
+#     else
+#       f = font
+#       f.point_size = 16
+#       self.font = f
+#     end
+  end
+  
+#   def on_added(index)
+#     index -= 1
+#     self.model.remove_rows(index, @history.size - index - 1)
+#     self.model.insert_rows(index, 1)
+#     self.model.set_data(self.model.index(index, 0), 
+#                         move(index), 
+#                         Qt::DisplayRole)
+#   end
+  
+#   private
+  
+#   def move(index)
+#     state = @history[index].state
+#     move = @history[index+ 1].move
+#     san = @serializer.serialize(move, state)
+#     
+#     count = index/ 2 + 1
+#     dots = if index% 2 == 0
+#       '.'
+#     else
+#       '...'
+#     end
+#     
+#     "#{count}#{dots} #{san}"
+#   end
+end
+
diff --git a/lib/qtutils.rb b/lib/qtutils.rb
index 420c04f..772cbd1 100644
--- a/lib/qtutils.rb
+++ b/lib/qtutils.rb
@@ -186,6 +186,34 @@ class Qt::Timer
   end
 end
 
+module ModelUtils
+  def removing_rows(parent, first, last)
+    if first > last
+      yield
+    else
+      begin
+        begin_remove_rows(parent || Qt::ModelIndex.new, first, last)
+        yield
+      ensure
+        end_remove_rows
+      end
+    end
+  end
+  
+  def inserting_rows(parent, first, last)
+    if first > last
+      yield
+    else
+      begin
+        begin_insert_rows(parent || Qt::ModelIndex.new, first, last)
+        yield
+      ensure
+        end_insert_rows
+      end
+    end
+  end
+end
+
 class KDE::Application
   def self.init(data)
     about = KDE::AboutData.new(
-- 
2.11.4.GIT