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module RGhost::Grid
# The callbacks for the grid are defined here. Let's see them in action.
# ===Grid::CallbackFacade examples
# grid=Grid::Matrix.new :column_padding => 1
# grid.column :title => "Id", :width => 1
# grid.column :title => "Name", :width => 3, :align => :center
# grid.column :title => "Date", :width => 3, :align => :right, :title_align => :center, :format => lambda{|v| v.strftime("%d/%m/%Y")}
# values=('A'..'E').to_a.map{|v| [v,"Name #{v}", Time.now]}
#
# even_row:
# grid.even_row do |e|
# e.background_row(:size => grid.width)
# end
# link:images/grid01.png
#
# Now before_row to create a top and bottom line:
# grid.before_row do |b|
# b.horizontal_line(:top, :size => grid.width )
# b.horizontal_line(:bottom, :size => grid.width)
# end
#
# link:images/grid02.png
#
# before_column:
# grid.before_column do |v|
# v.vertical_line_row
# end
#
# link:images/grid03.png
#
# after_column:
# grid.after_column {|c| c.vertical_line_row }
#
#
# link:images/grid04.png
#
# Moving to the header
# grid.header.before_create do |b|
# b.horizontal_line(:top, :size => grid.width)
# end
#
# link:images/grid05.png
#
# Finishing the grid lines:
# grid.header.before_column do |b|
# b.vertical_line_row
# end
#
#
# grid.header.after_column do |b|
# b.vertical_line_row
# end
#
# link:images/grid06.png
#
# Now a adding a bold font to the header
# grid.header.before_create do |b|
# b.horizontal_line(:top, :size => grid.width)
# b.use_tag :bold
# end
#
# link:images/grid07.png
#
# Oops. Not quite what we expected, the entire grid used bold
# face. We need to use a header callback to reset the font.
#
# grid.header.after_create do
# b.use_tag :normal
# end
#
# link:images/grid08.png
#
# Don't forget
#
# doc=Document.new
# doc.set grid
module CallbackFacade
# Executes before processing row. Responds to :only and :except
# options.
def before_row(options = {}, &)
new_dynamic_callback(:before_row, options, &)
end
# Executes on creating an odd rows. Responds to :only and :except
# options.
def odd_row(options = {}, &)
new_dynamic_callback(:odd_row, options, &)
end
# Executes upon creating even rows. Responds to :only and :except
# options.
def even_row(options = {}, &)
new_dynamic_callback(:even_row, options, &)
end
# Executes before creating a column. Responds to :only and :except
# options.
def before_column(options = {}, &)
new_dynamic_callback(:before_column, options, &)
end
# Executes after a column was created. Responds to :only and
# :except options.
def after_column(options = {}, &)
new_dynamic_callback(:after_column, options, &)
end
# Executes when creating an odd column. Responds to :only and
# :except options.
def odd_column(options = {}, &)
new_dynamic_callback(:odd_column, options, &)
end
# Executes upon creating an even column. Responds to :only and
# :except options.
def even_column(options = {}, &)
new_dynamic_callback(:even_column, options, &)
end
private
def new_dynamic_callback(name, options = {}, &)
@callbacks.set RGhost::Callback.new(name, options, &)
end
def new_static_callback(name, &)
callback_body = RGhost::PsFacade.new(&)
@callbacks.set RGhost::Function.new(name, callback_body)
end
end
end
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