Class: RRTF::TableRowNode

Inherits:
ContainerNode show all
Defined in:
lib/rrtf/node.rb

Overview

This class represents a row within an RTF table. The TableRowNode is a specialised container node that can hold only TableCellNodes and, once created, cannot be resized. Its also not possible to change the parent of a TableRowNode object.

Instance Attribute Summary

Attributes inherited from ContainerNode

#children

Attributes inherited from Node

#parent

Instance Method Summary collapse

Methods inherited from ContainerNode

#[], #each, #first, #last, #size, #store

Methods inherited from Node

#is_root?, #next_node, #previous_node, #root

Constructor Details

#initialize(table, cells, *widths) ⇒ TableRowNode

This is the constructor for the TableRowNode class.

Parameters
table

A reference to table that owns the row.

cells

The number of cells that the row will contain.

widths

One or more integers specifying the widths for the table columns



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# File 'lib/rrtf/node.rb', line 846

def initialize(table, cells, *widths)
   super(table) do
      entries = []
      cells.times do |index|
         entries.push(TableCellNode.new(self, widths[index]))
      end
      entries
   end
end

Instance Method Details

#border_width=(width) ⇒ Object

This method assigns a border width setting to all of the sides on all of the cells within a table row.

Parameters

width

The border width setting to apply. Negative values are ignored and zero switches the border off.



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# File 'lib/rrtf/node.rb', line 867

def border_width=(width)
   self.each {|cell| cell.border_width = width}
end

#length ⇒ Object

Attribute accessors



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# File 'lib/rrtf/node.rb', line 857

def length
   entries.size
end

#parent=(parent) ⇒ Object

This method overloads the parent= method inherited from the Node class to forbid the alteration of the cells parent.

Parameters

parent

A reference to the new node parent.



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# File 'lib/rrtf/node.rb', line 876

def parent=(parent)
   RTFError.fire("Table row nodes cannot have their parent changed.")
end

#shading_colour=(colour) ⇒ Object

This method sets the shading colour for a row.

Parameters

colour

A reference to the Colour object that represents the new shading colour. Set to nil to switch shading off.



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# File 'lib/rrtf/node.rb', line 885

def shading_colour=(colour)
   self.each {|cell| cell.shading_colour = colour}
end

#to_rtf ⇒ Object

This method generates the RTF document text for a TableCellNode object.



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# File 'lib/rrtf/node.rb', line 899

def to_rtf
   text   = StringIO.new
   temp   = StringIO.new
   offset = 0

   text << "\\trowd\\tgraph#{parent.cell_margin}"
   self.each do |entry|
      widths = entry.border_widths
      colour = entry.shading_colour

      text << "\n"
      text << "\\clbrdrt\\brdrw#{widths[0]}\\brdrs" if widths[0] != 0
      text << "\\clbrdrl\\brdrw#{widths[3]}\\brdrs" if widths[3] != 0
      text << "\\clbrdrb\\brdrw#{widths[2]}\\brdrs" if widths[2] != 0
      text << "\\clbrdrr\\brdrw#{widths[1]}\\brdrs" if widths[1] != 0
      text << "\\clcbpat#{root.colours.index(colour)}" if colour != nil
      text << "\\cellx#{entry.width + offset}"
      temp << "\n#{entry.to_rtf}"
      offset += entry.width
   end
   text << "#{temp.string}\n\\row"

   text.string
end