Adding support for page numbers

lib/caracal.rb

@@ -38,3 +38,19 @@ def self.root
   include Caracal::Core::Tables
   include Caracal::Core::Text
 end
+
+Caracal::Core::Models::FooterModel.class_eval do
+  include Caracal::Core::Images
+  include Caracal::Core::Lists
+  include Caracal::Core::Rules
+  include Caracal::Core::Tables
+  include Caracal::Core::Text
+end
+
+Caracal::Core::Models::HeaderModel.class_eval do
+  include Caracal::Core::Images
+  include Caracal::Core::Lists
+  include Caracal::Core::Rules
+  include Caracal::Core::Tables
+  include Caracal::Core::Text
+end

lib/caracal/core/footer.rb

@@ -0,0 +1,33 @@
+require 'caracal/core/models/footer_model'
+require 'caracal/errors'
+
+
+module Caracal
+  module Core
+
+    # This module encapsulates all the functionality related to adding a
+    # footer on every page of the document.
+    #
+    module Footer
+      def self.included(base)
+        base.class_eval do
+
+          #-------------------------------------------------------------
+          # Public Methods
+          #-------------------------------------------------------------
+
+          def footer(*args, &block)
+            options = Caracal::Utilities.extract_options!(args)
+
+            model = Caracal::Core::Models::FooterModel.new(options, &block)
+
+            @footer_content = model
+
+            model
+          end
+
+        end
+      end
+    end
+  end
+end

lib/caracal/core/header.rb

@@ -0,0 +1,32 @@
+require 'caracal/core/models/header_model'
+require 'caracal/errors'
+
+
+module Caracal
+  module Core
+
+    # This module encapsulates all the functionality related to adding a header
+    # to every page of the document.
+    #
+    module Header
+      def self.included(base)
+        base.class_eval do
+
+          #-------------------------------------------------------------
+          # Public Methods
+          #-------------------------------------------------------------
+
+          def header(*args, &block)
+            options = Caracal::Utilities.extract_options!(args)
+
+            model = Caracal::Core::Models::HeaderModel.new(options, &block)
+
+            @header_content = model
+
+            model
+          end
+        end
+      end
+    end
+  end
+end

lib/caracal/core/models/field_model.rb

@@ -0,0 +1,137 @@
+require 'caracal/core/models/base_model'
+
+
+module Caracal
+  module Core
+    module Models
+
+      # This class encapsulates the logic needed to store and manipulate
+      # text data.
+      #
+      class FieldModel < BaseModel
+
+        #--------------------------------------------------
+        # Configuration
+        #--------------------------------------------------
+
+        # constants
+        const_set(:TYPE_MAP, { page: 'PAGE', numpages: 'NUMPAGES' })
+
+        # accessors
+        attr_reader :field_dirty
+        attr_reader :field_type
+        attr_reader :field_style
+        attr_reader :field_font
+        attr_reader :field_color
+        attr_reader :field_size
+        attr_reader :field_bold
+        attr_reader :field_italic
+        attr_reader :field_underline
+        attr_reader :field_bgcolor
+        attr_reader :field_highlight_color
+        attr_reader :field_vertical_align
+
+        #-------------------------------------------------------------
+        # Public Class Methods
+        #-------------------------------------------------------------
+
+        def self.formatted_type(type)
+          TYPE_MAP.fetch(type.to_s.to_sym)
+        end
+
+
+        #-------------------------------------------------------------
+        # Public Instance Methods
+        #-------------------------------------------------------------
+
+        #=============== GETTERS ==============================
+
+        def formatted_type
+          self.class.formatted_type(field_type)
+        end
+
+        #========== GETTERS ===============================
+
+        # .run_attributes
+        def run_attributes
+          {
+            style:            field_style,
+            font:             field_font,
+            color:            field_color,
+            size:             field_size,
+            bold:             field_bold,
+            italic:           field_italic,
+            underline:        field_underline,
+            bgcolor:          field_bgcolor,
+            highlight_color:  field_highlight_color,
+            vertical_align:   field_vertical_align
+          }
+        end
+
+
+        #========== SETTERS ===============================
+
+        # booleans
+        [:bold, :italic, :underline].each do |m|
+          define_method "#{ m }" do |value|
+            instance_variable_set("@field_#{ m }", !!value)
+          end
+        end
+
+        # integers
+        [:size].each do |m|
+          define_method "#{ m }" do |value|
+            instance_variable_set("@field_#{ m }", value.to_i)
+          end
+        end
+
+        # strings
+        [:bgcolor, :color, :dirty, :font, :highlight_color, :style, :type,].each do |m|
+          define_method "#{ m }" do |value|
+            instance_variable_set("@field_#{ m }", value.to_s)
+          end
+        end
+
+        # symbols
+        [:vertical_align].each do |m|
+          define_method "#{ m }" do |value|
+            instance_variable_set("@field_#{ m }", value.to_s.to_sym)
+          end
+        end
+
+
+        #========== VALIDATION ============================
+
+        def valid?
+          a = [:type]
+          a.map { |m| send("field_#{ m }") }.compact.size == a.size
+        end
+
+
+        #--------------------------------------------------
+        # Private Methods
+        #--------------------------------------------------
+        private
+
+        def option_keys
+          [:type, :style, :font, :color, :size, :bold, :italic, :underline, :bgcolor, :highlight_color, :vertical_align]
+        end
+
+        def method_missing(method, *args, &block)
+          # TODO: Better field centric description
+
+          # I'm on the fence with respect to this implementation. We're ignoring
+          # :method_missing errors to allow syntax flexibility for paragraph-type
+          # models.  The issue is the syntax format of those models--the way we pass
+          # the content value as a special argument--coupled with the model's
+          # ability to accept nested instructions.
+          #
+          # By ignoring method missing errors here, we can pass the entire paragraph
+          # block in the initial, built-in call to :text.
+        end
+
+      end
+
+    end
+  end
+end

lib/caracal/core/models/footer_model.rb

@@ -0,0 +1,42 @@
+require 'caracal/core/models/base_model'
+require 'caracal/core/models/margin_model'
+require 'caracal/core/models/paragraph_model'
+
+
+module Caracal
+  module Core
+    module Models
+
+      # This class handles block options passed to tables via their data
+      # collections.
+      #
+      class FooterModel < BaseModel
+
+        #-------------------------------------------------------------
+        # Configuration
+        #-------------------------------------------------------------
+
+        # initialization
+        def initialize(options={}, &block)
+          super options, &block
+        end
+
+        #-------------------------------------------------------------
+        # Public Methods
+        #-------------------------------------------------------------
+
+        #=============== DATA ACCESSORS =======================
+
+        def contents
+          @contents ||= []
+        end
+
+        #=============== VALIDATION ===========================
+
+        def valid?
+          contents.size > 0
+        end
+      end
+    end
+  end
+end

lib/caracal/core/models/header_model.rb

@@ -0,0 +1,42 @@
+require 'caracal/core/models/base_model'
+require 'caracal/core/models/margin_model'
+require 'caracal/core/models/paragraph_model'
+
+
+module Caracal
+  module Core
+    module Models
+
+      # This class handles block options passed to tables via their data
+      # collections.
+      #
+      class HeaderModel < BaseModel
+
+        #-------------------------------------------------------------
+        # Configuration
+        #-------------------------------------------------------------
+
+        # initialization
+        def initialize(options={}, &block)
+          super options, &block
+        end
+
+        #-------------------------------------------------------------
+        # Public Methods
+        #-------------------------------------------------------------
+
+        #=============== DATA ACCESSORS =======================
+
+        def contents
+          @contents ||= []
+        end
+
+        #=============== VALIDATION ===========================
+
+        def valid?
+          contents.size > 0
+        end
+      end
+    end
+  end
+end

lib/caracal/core/models/paragraph_model.rb

@@ -2,6 +2,7 @@
 require 'caracal/core/models/bookmark_model'
 require 'caracal/core/models/link_model'
 require 'caracal/core/models/text_model'
+require 'caracal/core/models/field_model'
 require 'caracal/errors'
 
 
@@ -126,6 +127,20 @@ def br
           model
         end
 
+        # .page_num
+        def field(*args, &block)
+          options = Caracal::Utilities.extract_options!(args)
+          options = options.merge({ type: args[0] })
+
+          model = Caracal::Core::Models::FieldModel.new(options, &block)
+          if model.valid?
+            runs << model
+          else
+            raise Caracal::Errors::InvalidModelError, ':page_num method must receive a string for the display text.'
+          end
+          model
+        end
+
         # .link
         def link(*args, &block)
           options = Caracal::Utilities.extract_options!(args)

lib/caracal/core/models/relationship_model.rb

@@ -18,6 +18,7 @@ class RelationshipModel < BaseModel
         TYPE_MAP = {
           font:       'http://schemas.openxmlformats.org/officeDocument/2006/relationships/fontTable', 
           footer:     'http://schemas.openxmlformats.org/officeDocument/2006/relationships/footer',
+          header:     'http://schemas.openxmlformats.org/officeDocument/2006/relationships/header',
           image:      'http://schemas.openxmlformats.org/officeDocument/2006/relationships/image',
           link:       'http://schemas.openxmlformats.org/officeDocument/2006/relationships/hyperlink',
           numbering:  'http://schemas.openxmlformats.org/officeDocument/2006/relationships/numbering',

lib/caracal/core/relationships.rb

@@ -27,6 +27,7 @@ def self.default_relationships
             [
               { target: 'fontTable.xml',  type: :font      },
               { target: 'footer1.xml',    type: :footer    },
+              { target: 'header1.xml',    type: :header    },
               { target: 'numbering.xml',  type: :numbering },
               { target: 'settings.xml',   type: :setting   },
               { target: 'styles.xml',     type: :style     }