Implement table styles

lib/notare/builder.rb

@@ -100,8 +100,8 @@ module Notare
       @current_list.add_item(item)
     end
 
-    def table(&block)
-      tbl = Nodes::Table.new
+    def table(style: nil, &block)
+      tbl = Nodes::Table.new(style: resolve_table_style(style))
       previous_table = @current_table
       @current_table = tbl
       block.call
@@ -198,5 +198,12 @@ module Notare
 
       style(style_or_name) || raise(ArgumentError, "Unknown style: #{style_or_name}")
     end
+
+    def resolve_table_style(style_or_name)
+      return nil if style_or_name.nil?
+      return style_or_name if style_or_name.is_a?(TableStyle)
+
+      table_style(style_or_name) || raise(ArgumentError, "Unknown table style: #{style_or_name}")
+    end
   end
 end

lib/notare/document.rb

@@ -4,7 +4,7 @@ module Notare
   class Document
     include Builder
 
-    attr_reader :nodes, :styles, :hyperlinks
+    attr_reader :nodes, :styles, :table_styles, :hyperlinks
 
     def self.create(path, &block)
       doc = new
@@ -25,7 +25,9 @@ module Notare
       @images = {}
       @hyperlinks = []
       @styles = {}
+      @table_styles = {}
       register_built_in_styles
+      register_built_in_table_styles
     end
 
     def define_style(name, **properties)
@@ -36,6 +38,14 @@ module Notare
       @styles[name]
     end
 
+    def define_table_style(name, **properties)
+      @table_styles[name] = TableStyle.new(name, **properties)
+    end
+
+    def table_style(name)
+      @table_styles[name]
+    end
+
     def save(path)
       Package.new(self).save(path)
     end
@@ -104,5 +114,13 @@ module Notare
       define_style :quote, italic: true, color: "666666", indent: 720
       define_style :code, font: "Courier New", size: 10
     end
+
+    def register_built_in_table_styles
+      define_table_style :grid,
+                         borders: { style: "single", color: "000000", size: 4 }
+
+      define_table_style :borderless,
+                         borders: :none
+    end
   end
 end

lib/notare/nodes/table.rb

@@ -3,11 +3,12 @@
 module Notare
   module Nodes
     class Table < Base
-      attr_reader :rows
+      attr_reader :rows, :style
 
-      def initialize
-        super
+      def initialize(style: nil)
+        super()
         @rows = []
+        @style = style
       end
 
       def add_row(row)

lib/notare/package.rb

@@ -59,7 +59,7 @@ module Notare
     end
 
     def styles_xml
-      Xml::StylesXml.new(@document.styles).to_xml
+      Xml::StylesXml.new(@document.styles, @document.table_styles).to_xml
     end
 
     def numbering_xml

lib/notare/table_style.rb

@@ -0,0 +1,83 @@
+# frozen_string_literal: true
+
+module Notare
+  class TableStyle
+    attr_reader :name, :borders, :shading, :cell_margins, :align
+
+    BORDER_STYLES = %w[single double dotted dashed triple none nil].freeze
+    BORDER_POSITIONS = %i[top bottom left right insideH insideV].freeze
+    ALIGNMENTS = %i[left center right].freeze
+
+    def initialize(name, borders: nil, shading: nil, cell_margins: nil, align: nil)
+      @name = name
+      @borders = normalize_borders(borders)
+      @shading = normalize_color(shading)
+      @cell_margins = normalize_cell_margins(cell_margins)
+      @align = validate_align(align)
+    end
+
+    def style_id
+      name.to_s.split("_").map(&:capitalize).join
+    end
+
+    def display_name
+      name.to_s.split("_").map(&:capitalize).join(" ")
+    end
+
+    private
+
+    def normalize_borders(borders)
+      return nil if borders.nil?
+      return :none if borders == :none
+
+      # Check if it's a per-edge configuration
+      if borders.keys.any? { |k| BORDER_POSITIONS.include?(k) }
+        borders.transform_values { |v| normalize_single_border(v) }
+      else
+        # Single border config applied to all edges
+        normalize_single_border(borders)
+      end
+    end
+
+    def normalize_single_border(border)
+      return :none if border == :none || border[:style] == "none"
+
+      style = border[:style] || "single"
+      unless BORDER_STYLES.include?(style)
+        raise ArgumentError, "Invalid border style: #{style}. Use #{BORDER_STYLES.join(", ")}"
+      end
+
+      {
+        style: style,
+        color: normalize_color(border[:color]) || "000000",
+        size: border[:size] || 4
+      }
+    end
+
+    def normalize_color(color)
+      return nil if color.nil?
+
+      hex = color.to_s.sub(/^#/, "").upcase
+      return hex if hex.match?(/\A[0-9A-F]{6}\z/)
+
+      raise ArgumentError, "Invalid color: #{color}. Use 6-digit hex (e.g., 'FF0000')"
+    end
+
+    def normalize_cell_margins(margins)
+      return nil if margins.nil?
+
+      if margins.is_a?(Hash)
+        margins.slice(:top, :bottom, :left, :right)
+      else
+        margins.to_i
+      end
+    end
+
+    def validate_align(align)
+      return nil if align.nil?
+      return align if ALIGNMENTS.include?(align)
+
+      raise ArgumentError, "Invalid alignment: #{align}. Use #{ALIGNMENTS.join(", ")}"
+    end
+  end
+end

lib/notare/xml/document_xml.rb

@@ -169,9 +169,13 @@ module Notare
         xml["w"].tbl do
           xml["w"].tblPr do
             xml["w"].tblW("w:w" => "5000", "w:type" => "pct")
-            xml["w"].tblBorders do
-              %w[top left bottom right insideH insideV].each do |border|
-                xml["w"].send(border, "w:val" => "single", "w:sz" => "4", "w:space" => "0", "w:color" => "000000")
+            if table.style
+              xml["w"].tblStyle("w:val" => table.style.style_id)
+            else
+              xml["w"].tblBorders do
+                %w[top left bottom right insideH insideV].each do |border|
+                  xml["w"].send(border, "w:val" => "single", "w:sz" => "4", "w:space" => "0", "w:color" => "000000")
+                end
               end
             end
           end

lib/notare/xml/styles_xml.rb

@@ -12,8 +12,15 @@ module Notare
         justify: "both"
       }.freeze
 
-      def initialize(styles)
+      TABLE_ALIGNMENT_MAP = {
+        left: "left",
+        center: "center",
+        right: "right"
+      }.freeze
+
+      def initialize(styles, table_styles = {})
         @styles = styles
+        @table_styles = table_styles
       end
 
       def to_xml
@@ -24,6 +31,10 @@ module Notare
             @styles.each_value do |style|
               render_style(xml, style)
             end
+
+            @table_styles.each_value do |style|
+              render_table_style(xml, style)
+            end
           end
         end
         builder.to_xml
@@ -63,6 +74,59 @@ module Notare
           xml["w"].highlight("w:val" => style.highlight) if style.highlight
         end
       end
+
+      def render_table_style(xml, style)
+        xml["w"].style("w:type" => "table", "w:styleId" => style.style_id) do
+          xml["w"].name("w:val" => style.display_name)
+
+          xml["w"].tblPr do
+            render_table_borders(xml, style.borders) if style.borders
+            render_table_shading(xml, style.shading) if style.shading
+            render_table_cell_margins(xml, style.cell_margins) if style.cell_margins
+            xml["w"].jc("w:val" => TABLE_ALIGNMENT_MAP[style.align]) if style.align
+          end
+        end
+      end
+
+      def render_table_borders(xml, borders)
+        xml["w"].tblBorders do
+          %i[top left bottom right insideH insideV].each do |pos|
+            border = borders == :none ? :none : (borders[pos] || borders)
+            render_single_border(xml, pos, border)
+          end
+        end
+      end
+
+      def render_single_border(xml, position, border)
+        if border == :none
+          xml["w"].send(position, "w:val" => "nil")
+        else
+          xml["w"].send(position,
+                        "w:val" => border[:style],
+                        "w:sz" => border[:size].to_s,
+                        "w:space" => "0",
+                        "w:color" => border[:color])
+        end
+      end
+
+      def render_table_shading(xml, color)
+        xml["w"].shd("w:val" => "clear", "w:color" => "auto", "w:fill" => color)
+      end
+
+      def render_table_cell_margins(xml, margins)
+        xml["w"].tblCellMar do
+          if margins.is_a?(Hash)
+            xml["w"].top("w:w" => margins[:top].to_s, "w:type" => "dxa") if margins[:top]
+            xml["w"].left("w:w" => margins[:left].to_s, "w:type" => "dxa") if margins[:left]
+            xml["w"].bottom("w:w" => margins[:bottom].to_s, "w:type" => "dxa") if margins[:bottom]
+            xml["w"].right("w:w" => margins[:right].to_s, "w:type" => "dxa") if margins[:right]
+          else
+            %i[top left bottom right].each do |side|
+              xml["w"].send(side, "w:w" => margins.to_s, "w:type" => "dxa")
+            end
+          end
+        end
+      end
     end
   end
 end