Chris@909: # Redmine - project management software
Chris@909: # Copyright (C) 2006-2011  Jean-Philippe Lang
Chris@909: #
Chris@909: # This program is free software; you can redistribute it and/or
Chris@909: # modify it under the terms of the GNU General Public License
Chris@909: # as published by the Free Software Foundation; either version 2
Chris@909: # of the License, or (at your option) any later version.
Chris@909: #
Chris@909: # This program is distributed in the hope that it will be useful,
Chris@909: # but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@909: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@909: # GNU General Public License for more details.
Chris@909: #
Chris@909: # You should have received a copy of the GNU General Public License
Chris@909: # along with this program; if not, write to the Free Software
Chris@909: # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
Chris@909: 
Chris@909: require 'blankslate'
Chris@909: 
Chris@909: module Redmine
Chris@909:   module Views
Chris@909:     module Builders
Chris@909:       class Structure < BlankSlate
Chris@909:         def initialize
Chris@909:           @struct = [{}]
Chris@909:         end
Chris@909: 
Chris@909:         def array(tag, options={}, &block)
Chris@909:           @struct << []
Chris@909:           block.call(self)
Chris@909:           ret = @struct.pop
Chris@909:           @struct.last[tag] = ret
Chris@909:           @struct.last.merge!(options) if options
Chris@909:         end
Chris@909: 
Chris@909:         def method_missing(sym, *args, &block)
Chris@909:           if args.any?
Chris@909:             if args.first.is_a?(Hash)
Chris@909:               if @struct.last.is_a?(Array)
Chris@909:                 @struct.last << args.first unless block
Chris@909:               else
Chris@909:                 @struct.last[sym] = args.first
Chris@909:               end
Chris@909:             else
Chris@909:               if @struct.last.is_a?(Array)
Chris@909:                 @struct.last << (args.last || {}).merge(:value => args.first)
Chris@909:               else
Chris@909:                 @struct.last[sym] = args.first
Chris@909:               end
Chris@909:             end
Chris@909:           end
Chris@909: 
Chris@909:           if block
Chris@909:             @struct << (args.first.is_a?(Hash) ? args.first : {})
Chris@909:             block.call(self)
Chris@909:             ret = @struct.pop
Chris@909:             if @struct.last.is_a?(Array)
Chris@909:               @struct.last << ret
Chris@909:             else
Chris@909:               if @struct.last.has_key?(sym) && @struct.last[sym].is_a?(Hash)
Chris@909:                 @struct.last[sym].merge! ret
Chris@909:               else
Chris@909:                 @struct.last[sym] = ret
Chris@909:               end
Chris@909:             end
Chris@909:           end
Chris@909:         end
Chris@909: 
Chris@909:         def output
Chris@909:           raise "Need to implement #{self.class.name}#output"
Chris@909:         end
Chris@909:       end
Chris@909:     end
Chris@909:   end
Chris@909: end