class VR_ListView < Gtk::TreeView

	def initialize(*args)
		super()
		model_col = 0
		self.model = Gtk::ListStore.new(*args.flatten)
		args.each do |arg|
			col = VR_TreeViewColumn.new(model_col, self, arg)
			model_col = model_col + (arg.class == Array ? arg.size : 1)
			self.append_column(col)
		end
		self.headers_visible = false
	end

	def []( row )	
		model.get_iter(Gtk::TreePath.new("#{row}"))
	end

	def []( row, col )	
		model.get_iter(Gtk::TreePath.new("#{row}"))[col]
	end

	def each_iter 
		self.model.each { |mod, pth, itr| yield itr }	
	end

	def add_row(*args)
		child = model.append
		(0..args.size-1).each { |i| child[i] = args[i] }
		return child
	end

	def set_visible( visible, *args )
		args.each { |i| col(i).visible = visible }
	end

	def set_col_sortable(col, model_col, order = Gtk::SORT_ASCENDING)
		return unless c = col(col)
		c.sort_indicator = true
		c.sort_column_id = model_col
		c.sort_order = order				
	end

	def set_titles(*args)			
		(0..args.size-1).each { |i| set_col_title(i, args[i]) }	
	end	
	
	def set_col_title( i, title )
		return if self.columns[i] == nil
		columns[i].title = title
		self.headers_visible = true
	end

	def set_radio( is_radio, *ren_idx ) 
		ren_idx.each do |i|
			r = renderer(i)
			next if r.class != VR_CellRendererToggle
			r.radio = is_radio
		end
	end

	def set_digits(digits, *ren_idx )
		ren_idx.each do |i|
			next unless r = renderer(i)
			r.digits = digits
		end
	end

	def set_edit_save( is_editable, *ren_idx )
		ren_idx.each do |i|
			next unless r = renderer(i)
			r.set_edit_save(is_editable)
		end
	end
	
	def col(i) 
		if i.class == String 
			columns.detect { |col| col.title == i } 
		else
			columns[i]
		end 
	end

	def set_alignment(align, *ren_idx)
		ren_idx.each do |i|
			r = renderer(i)
  		r.xalign = align  #Pango::ALIGN_XXXX is No Good!
		end	
	end

	def set_width(w, *cols)
		cols.each do |col|
  		next unless c = col(col)
  		c.sizing = Gtk::TreeViewColumn::FIXED
  		c.fixed_width = w
		end
	end

	def each_renderer
		self.columns.each do |c|
			c.cell_renderers.each do |r| 
				yield r 
			end
		end
	end

	def renderer(i)
		each_renderer do |r| 
			next unless defined? r.model_col
			return r if r.model_col == i 
		end
		return false
	end

end