# -*- coding: utf-8 -*-
require 'write_xlsx/utility'

module Writexlsx
  module Package

    class Button
      include Writexlsx::Utility

      attr_accessor :font, :macro, :vertices

      def v_shape_attributes(id, z_index)
        attributes = v_shape_attributes_base(id, z_index)
        attributes << ['o:button',    't']
        attributes << ['fillcolor',   color]
        attributes << ['strokecolor', 'windowText [64]']
        attributes << ['o:insetmode', 'auto']
        attributes
      end

      def type
        '#_x0000_t201'
      end

      def color
        'buttonFace [67]'
      end

      def style_addition
        ['mso-wrap-style:tight']
      end

      def write_shape(writer, id, z_index)
        @writer = writer

        attributes = v_shape_attributes(id, z_index)

        @writer.tag_elements('v:shape', attributes) do
          # Write the v:fill element.
          write_fill
          # Write the o:lock element.
          write_rotation_lock
          # Write the v:textbox element.
          write_textbox
          # Write the x:ClientData element.
          write_client_data
        end
      end

      # attributes for <v:fill> element.
      def fill_attributes
        [
         ['color2',             'buttonFace [67]'],
         ['o:detectmouseclick', 't']
        ]
      end

      #
      # Write the <o:lock> element.
      #
      def write_rotation_lock
        attributes = [
                      ['v:ext',    'edit'],
                      ['rotation', 't']
                     ]
        @writer.empty_tag('o:lock', attributes)
      end

      #
      # Write the <v:textbox> element.
      #
      def write_textbox
        attributes = [
                      ['style', 'mso-direction-alt:auto'],
                      ['o:singleclick', 'f']
                     ]

        @writer.tag_elements('v:textbox', attributes) do
          # Write the div element.
          write_div('center', font)
        end
      end

      #
      # Write the <x:ClientData> element.
      #
      def write_client_data
        attributes = [ ['ObjectType', 'Button'] ]

        @writer.tag_elements('x:ClientData', attributes) do
          # Write the x:Anchor element.
          write_anchor
          # Write the x:PrintObject element.
          write_print_object
          # Write the x:AutoFill element.
          write_auto_fill
          # Write the x:FmlaMacro element.
          write_fmla_macro
          # Write the x:TextHAlign element.
          write_text_halign
          # Write the x:TextVAlign element.
          write_text_valign
        end
      end

      #
      # Write the <x:PrintObject> element.
      #
      def write_print_object
        @writer.data_element('x:PrintObject', 'False')
      end

      #
      # Write the <x:FmlaMacro> element.
      #
      def write_fmla_macro
        @writer.data_element('x:FmlaMacro', macro)
      end

      #
      # Write the <x:TextHAlign> element.
      #
      def write_text_halign
        @writer.data_element('x:TextHAlign', 'Center')
      end

      #
      # Write the <x:TextVAlign> element.
      #
      def write_text_valign
        @writer.data_element('x:TextVAlign', 'Center')
      end
    end
  end
end