Module: DYI::Chart::OptionCreator

Included in:
Base
Defined in:
lib/dyi/chart/base.rb

Overview

Since:

  • 1.0.0

Instance Method Summary collapse

Instance Method Details

#opt_accessor(name, settings = {}) ⇒ Object

Difines a read-write property.

Parameters:

  • name (Symbol) —

    the property name

  • settings (Hash) (defaults to: {}) —

    settings of the property

Since:

  • 1.0.0



187
188
189
190
 
# File 'lib/dyi/chart/base.rb', line 187

def opt_accessor(name, settings = {})
  opt_reader(name, settings)
  opt_writer(name, settings)
end

#opt_reader(name, settings = {}) ⇒ Object

Difines a read property.

Parameters:

  • name (Symbol) —

    the property name

  • settings (Hash) (defaults to: {}) —

    settings of the property

Since:

  • 1.0.0



34
35
36
37
38
39
40
41
42
43
44
45
46
 
# File 'lib/dyi/chart/base.rb', line 34

def opt_reader(name, settings = {})
  name = name.to_sym
  getter_name = settings[:type] == :boolean ? name.to_s.gsub(/^(.*[^=\?])[=\?]*$/, '\1?') : name
  if settings.key?(:default)
    define_method(getter_name) {@options.key?(name) ? @options[name] : settings[:default]}
  elsif settings.key?(:default_method)
    define_method(getter_name) {@options.key?(name) ? @options[name] : __send__(settings[:default_method])}
  elsif settings.key?(:default_proc)
    define_method(getter_name) {@options.key?(name) ? @options[name] : settings[:default_proc].call(self)}
  else
    define_method(getter_name) {@options[name]}
  end
end

#opt_writer(name, settings = {}) ⇒ Object

Difines a write property.

Parameters:

  • name (Symbol) —

    the property name

  • settings (Hash) (defaults to: {}) —

    settings of the property

Since:

  • 1.0.0



51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
 
# File 'lib/dyi/chart/base.rb', line 51

def opt_writer(name, settings = {})
  name = name.to_sym
  setter_name = name.to_s.gsub(/^(.*[^=\?])[=\?]*$/, '\1=')

  convertor =
    case settings[:type]
      when :boolen then proc {|value| not not value}
      when :string then proc {|value| value.to_s}
      when :symbol then proc {|value| value.to_sym}
      when :integer then proc {|value| value.to_i}
      when :float then proc {|value| value.to_f}
      when :length then proc {|value| Length.new(value)}
      when :point then proc {|value| Coordinate.new(value)}
      when :color then proc {|value| Color.new(value)}
      when :font then proc {|value| Font.new(value)}
      else proc {|value| value} if !settings.key?(:map_method) && !settings.key?(:mapper) && !settings.key?(:item_type)
    end

  validator =
    case settings[:type]
    when :symbol
      if settings.key?(:valid_values)
        proc {|value| raise ArgumentError, "\"#{value}\" is invalid value" unless settings[:valid_values].include?(convertor.call(value))}
      end
    when :integer, :float
      if settings.key?(:range)
        proc {|value| raise ArgumentError, "\"#{value}\" is invalid value" unless settings[:range].include?(convertor.call(value))}
      end
    end

  case settings[:type]
  when :hash
    raise ArgumentError, "keys is not specified" unless settings.key?(:keys)
    define_method(setter_name) {|values|
      if values.nil? || values.empty?
        @options.delete(name)
      else
        @options[name] =
          settings[:keys].inject({}) do |hash, key|
            hash[key] =
              if convertor
                convertor.call(values[key])
              elsif settings.key?(:map_method)
                __send__(settings[:map_method], values[key])
              elsif settings.key?(:mapper)
                settings[:mapper].call(values[key], self)
              elsif settings.key?(:item_type)
                case settings[:item_type]
                  when :boolen then not not values[key]
                  when :string then values[key].to_s
                  when :symbol then values[key].to_sym
                  when :integer then values[key].to_i
                  when :float then values[key].to_f
                  when :length then Length.new(values[key])
                  when :point then Coordinate.new(values[key])
                  when :color then value[key].respond_to?(:format) ? value[key] : Color.new(values[key])
                  when :font then Font.new(values[key])
                  else values[key]
                end
              end if values[key]
            hash
          end
      end
      values
    }
  when :array
    define_method(setter_name) {|values|
      if values.nil? || values.empty?
        @options.delete(name)
      else
        @options[name] =
          Array(values).to_a.map {|item|
            if convertor
              convertor.call(item)
            elsif settings.key?(:map_method)
              __send__(settings[:map_method], item)
            elsif settings.key?(:mapper)
              settings[:mapper].call(item, self)
            elsif settings.key?(:item_type)
              case settings[:item_type]
                when :boolen then not not item
                when :string then item.to_s
                when :symbol then item.to_sym
                when :integer then item.to_i
                when :float then item.to_f
                when :length then Length.new(item)
                when :point then Coordinate.new(item)
                when :color then item.respond_to?(:write_as) ? item : Color.new_or_nil(item)
                when :font then Font.new(item)
                else item
              end
            else
              item
            end
          }
      end
      values
    }
  else
    define_method(setter_name) {|value|
      if value.nil?
        @options.delete(name)
      else
        validator && validator.call(value)
        @options[name] =
          if convertor
            convertor.call(value)
          elsif settings.key?(:map_method)
            __send__(settings[:map_method], value)
          elsif ettings.key?(:mapper)
            settings[:mapper].call(value, self)
          elsif settings.key?(:item_type)
            case settings[:item_type]
              when :boolen then not not value
              when :string then value.to_s
              when :symbol then value.to_sym
              when :integer then value.to_i
              when :float then value.to_f
              when :length then Length.new(value)
              when :point then Coordinate.new(value)
              when :color then Color.new(value)
              when :font then Font.new(value)
              else value
            end
          else
            value
          end
      end
      value
    }
  end
end