* renewal Ruby/Tk

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@6237 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 126 insertions, 0 deletions

diff --git a/ext/tk/lib/tk/textmark.rb b/ext/tk/lib/tk/textmark.rb
new file mode 100644
index 0000000000..faf19b7a62
--- /dev/null
+++ b/ext/tk/lib/tk/textmark.rb
@@ -0,0 +1,126 @@
+#
+# tk/textmark.rb - methods for treating text marks
+#
+require 'tk'
+require 'tk/text'
+
+class TkTextMark<TkObject
+  TMarkID_TBL = TkCore::INTERP.create_table
+  Tk_TextMark_ID = ['mark'.freeze, '00000'.taint].freeze
+
+  TkCore::INTERP.init_ip_env{ TMarkID_TBL.clear }
+
+  def TkTextMark.id2obj(text, id)
+    tpath = text.path
+    return id unless TMarkID_TBL[tpath]
+    TMarkID_TBL[tpath][id]? TMarkID_TBL[tpath][id]: id
+  end
+
+  def initialize(parent, index)
+    unless parent.kind_of?(TkText)
+      fail ArguemntError, "expect TkText for 1st argument"
+    end
+    @parent = @t = parent
+    @tpath = parent.path
+    @path = @id = Tk_TextMark_ID.join('')
+    TMarkID_TBL[@id] = self
+    TMarkID_TBL[@tpath] = {} unless TMarkID_TBL[@tpath]
+    TMarkID_TBL[@tpath][@id] = self
+    Tk_TextMark_ID[1].succ!
+    tk_call_without_enc(@t.path, 'mark', 'set', @id, 
+			_get_eval_enc_str(index))
+    @t._addtag id, self
+  end
+
+  def id
+    @id
+  end
+
+  def +(mod)
+    @id + ' + ' + mod
+  end
+  def -(mod)
+    @id + ' - ' + mod
+  end
+
+  def set(where)
+    tk_call_without_enc(@t.path, 'mark', 'set', @id, 
+			_get_eval_enc_str(where))
+    self
+  end
+
+  def unset
+    tk_call_without_enc(@t.path, 'mark', 'unset', @id)
+    self
+  end
+  alias destroy unset
+
+  def gravity
+    tk_call_without_enc(@t.path, 'mark', 'gravity', @id)
+  end
+
+  def gravity=(direction)
+    tk_call_without_enc(@t.path, 'mark', 'gravity', @id, direction)
+    #self
+    direction
+  end
+
+  def next(index = nil)
+    if index
+      @t.tagid2obj(_fromUTF8(tk_call_without_enc(@t.path, 'mark', 'next', _get_eval_enc_str(index))))
+    else
+      @t.tagid2obj(_fromUTF8(tk_call_without_enc(@t.path, 'mark', 'next', @id)))
+    end
+  end
+
+  def previous(index = nil)
+    if index
+      @t.tagid2obj(_fromUTF8(tk_call_without_enc(@t.path, 'mark', 'previous', _get_eval_enc_str(index))))
+    else
+      @t.tagid2obj(_fromUTF8(tk_call_without_enc(@t.path, 'mark', 'previous', @id)))
+    end
+  end
+end
+
+class TkTextNamedMark<TkTextMark
+  def self.new(parent, name, *args)
+    if TMarkID_TBL[parent.path] && TMarkID_TBL[parent.path][name]
+      return TMarkID_TBL[parent.path][name]
+    else
+      super(parent, name, *args)
+    end
+  end
+
+  def initialize(parent, name, index=nil)
+    unless parent.kind_of?(TkText)
+      fail ArguemntError, "expect TkText for 1st argument"
+    end
+    @parent = @t = parent
+    @tpath = parent.path
+    @path = @id = name
+    TMarkID_TBL[@id] = self
+    TMarkID_TBL[@tpath] = {} unless TMarkID_TBL[@tpath]
+    TMarkID_TBL[@tpath][@id] = self unless TMarkID_TBL[@tpath][@id]
+    tk_call_without_enc(@t.path, 'mark', 'set', @id, 
+			_get_eval_enc_str(index)) if index
+    @t._addtag id, self
+  end
+end
+
+class TkTextMarkInsert<TkTextNamedMark
+  def self.new(parent,*args)
+    super(parent, 'insert', *args)
+  end
+end
+
+class TkTextMarkCurrent<TkTextMark
+  def self.new(parent,*args)
+    super(parent, 'current', *args)
+  end
+end
+
+class TkTextMarkAnchor<TkTextMark
+  def self.new(parent,*args)
+    super(parent, 'anchor', *args)
+  end
+end