root/lib/html_builder/stacking_table.rb @ fc30c2a2
| b689e231 | Marc Dequènes (Duck) | #!/usr/bin/ruby
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class HtmlBuilder::StackingTable
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attr_accessor :inner_table
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def initialize(caption = nil, html_options = {})
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@caption = caption
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@html_options = html_options
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@inner_table = false
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end
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def build
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options = ""
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@html_options.each_pair {|opt, val| options += " #{opt}=\"#{val}\"" }
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html = "<table#{options}>\n"
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t = create_table()
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t.inner_table = @inner_table
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yield(t)
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t.calculate_depths
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t.propagate_parameters
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html += t.build
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html += "</table>\n"
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return html
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end
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def create_table
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Table.new(@caption)
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end
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class Container
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def initialize(name)
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@name = name
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@elements = []
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@x_depth = 0
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@y_depth = 0
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@fill_x_depth = nil
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end
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def content(text, html_options = {})
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text = [text] unless text.kind_of? Array
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if html_options.empty?
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@elements << text
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else
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options = ""
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html_options.each_pair {|opt, val| options += " #{opt}=\"#{val}\"" }
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prepared_text = text.collect {|t| "<span#{options}>#{t}</span>" }
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@elements << prepared_text
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end
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end
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def category(cat_name)
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c = create_category(cat_name)
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yield(c)
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@elements << c
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end
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def calculate_depths
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y_depth = 0
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@elements.each do |el|
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if el.respond_to? :build
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e_x_depth, e_y_depth = el.calculate_depths
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x_depth = e_x_depth + 1
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y_depth += e_y_depth
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elsif el.kind_of? Array
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x_depth = el.size
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y_depth += 1
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else
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x_depth = 1
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y_depth += 1
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end
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@x_depth = x_depth if x_depth > @x_depth
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@y_depth = y_depth
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end
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# in case category is empty
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@y_depth = [1, @y_depth].max
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return @x_depth, @y_depth
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end
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def propagate_parameters(depth = nil)
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if depth.nil?
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depth = @x_depth
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else
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depth -= 1
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end
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@fill_x_depth = depth
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@elements.each do |el|
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el.propagate_parameters(depth) if el.respond_to? :build
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end
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end
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def build
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lines = fetch_lines()
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options = (@y_depth > 1) ? " rowspan=\"#{@y_depth}\"" : ""
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lines << [] if lines.empty?
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lines.first.unshift "<th#{options}>#{@name}</th>"
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return lines
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end
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private
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def create_category(cat_name)
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Category.new(cat_name)
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end
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def fetch_lines
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lines = []
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@elements.each do |el|
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if el.respond_to? :build
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lines += el.build
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elsif el.kind_of? Array
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l = ""
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last_el = el.pop
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x_depth_left = @fill_x_depth - el.size
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first_el = el.shift
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tag = ((self.kind_of?(Table) and not @inner_table) ? "th" : "td")
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l += "<#{tag}>#{first_el}</#{tag}>" unless first_el.nil?
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el.each {|s_el| l += "<td>#{s_el}</td>"}
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options = (x_depth_left > 1) ? " colspan=\"#{x_depth_left}\"" : ""
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l += "<td#{options}>#{last_el}</td>" unless last_el.nil?
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lines << [ l ]
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else
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options = (@x_depth > 1) ? " colspan=\"#{@x_depth}\"" : ""
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lines << [ "<td#{options}>#{el}</td>" ]
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end
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end
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return lines
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end
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end
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class Category < Container
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end
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class Table < Container
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attr_accessor :inner_table
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def initialize(name = nil)
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super
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@inner_table = false
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end
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def build
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html = ""
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html += "<caption>#{@name}</caption>\n" if @name
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lines = fetch_lines()
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lines.each {|l| html += "<tr>#{l}</tr>\n"}
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return html
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end
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end
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end
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# example
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if $0 == __FILE__
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h = {"z" => "PLOP", "coin" => {"toto" => "erb", "titi" => {"gtk" => "gh"}}}
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z = StackingTable.build("Super Caption !!!") do |table|
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table.content("coucou")
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table.category("Cat 1") do |cat|
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cat.content("plop")
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cat.content("toto")
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cat.category("Cat 2") do |cat|
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cat.content("titi")
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end
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end
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end
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puts z
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end
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