0
@@ -0,0 +1,20 @@
0
+Copyright (c) 2008 [name of plugin creator]
0
+
0
+Permission is hereby granted, free of charge, to any person obtaining
0
+a copy of this software and associated documentation files (the
0
+"Software"), to deal in the Software without restriction, including
0
+without limitation the rights to use, copy, modify, merge, publish,
0
+distribute, sublicense, and/or sell copies of the Software, and to
0
+permit persons to whom the Software is furnished to do so, subject to
0
+the following conditions:
0
+
0
+The above copyright notice and this permission notice shall be
0
+included in all copies or substantial portions of the Software.
0
+
0
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
0
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
0
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
0
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
0
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
0
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
0
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

0
@@ -0,0 +1,13 @@
0
+PreferenceFu
0
+============
0
+
0
+Introduction goes here.
0
+
0
+
0
+Example
0
+=======
0
+
0
+Example goes here.
0
+
0
+
0
+Copyright (c) 2008 [name of plugin creator], released under the MIT license

0
@@ -0,0 +1,22 @@
0
+require 'rake'
0
+require 'rake/testtask'
0
+require 'rake/rdoctask'
0
+
0
+desc 'Default: run unit tests.'
0
+task :default => :test
0
+
0
+desc 'Test the preference_fu plugin.'
0
+Rake::TestTask.new(:test) do |t|
0
+  t.libs << 'lib'
0
+  t.pattern = 'test/**/*_test.rb'
0
+  t.verbose = true
0
+end
0
+
0
+desc 'Generate documentation for the preference_fu plugin.'
0
+Rake::RDocTask.new(:rdoc) do |rdoc|
0
+  rdoc.rdoc_dir = 'rdoc'
0
+  rdoc.title    = 'PreferenceFu'
0
+  rdoc.options << '--line-numbers' << '--inline-source'
0
+  rdoc.rdoc_files.include('README')
0
+  rdoc.rdoc_files.include('lib/**/*.rb')
0
+end

0
@@ -0,0 +1,3 @@
0
+# Include hook code here
0
+
0
+ActiveRecord::Base.class_eval { include PreferenceFu }
0
\ No newline at end of file

0
@@ -0,0 +1 @@
0
+# Install hook code here

0
@@ -0,0 +1,208 @@
0
+module PreferenceFu
0
+  
0
+  module ClassMethods
0
+        
0
+    def has_preferences(*options)
0
+      config = { :column => 'preferences' }
0
+      
0
+      %w(options instance).each do |reserved|
0
+        if options.include?(reserved.to_sym)
0
+          raise ArgumentError.new("Cannot use reserved key '#{reserved}' as a preference")
0
+        end
0
+      end
0
+      
0
+      idx = 0; @@preference_options = {}
0
+      options.each do |pref|
0
+        @@preference_options[2**idx] = { :key => pref.to_sym, :default => false }
0
+        idx += 1
0
+      end
0
+      
0
+      class_eval <<-EOV
0
+
0
+      def preferences_column
0
+        '#{config[:column]}'
0
+      end
0
+
0
+      EOV
0
+            
0
+    end
0
+    
0
+    def set_default_preference(key, default)
0
+      raise ArgumentError.new("Default value must be boolean") unless [true, false].include?(default)
0
+      idx = preference_options.find { |idx, hsh| hsh[:key] == key.to_sym }.first rescue nil
0
+      if idx
0
+        preference_options[idx][:default] = default
0
+      end
0
+    end
0
+    
0
+    def preference_options
0
+      @@preference_options
0
+    end
0
+    
0
+  end
0
+  
0
+  module InstanceMethods
0
+    
0
+    def preferences
0
+      @preferences_object ||= Preferences.new(read_attribute(preferences_column.to_sym), self)
0
+    end
0
+    
0
+  end
0
+  
0
+  
0
+  class Preferences
0
+    
0
+    attr_accessor :instance, :options
0
+    
0
+    def initialize(prefs, instance)
0
+      @instance = instance
0
+      @options = instance.class.preference_options
0
+      
0
+      # setup defaults if prefs is nil
0
+      if prefs.nil?
0
+        @options.each do |idx, hsh|
0
+          instance_variable_set("@#{hsh[:key]}", hsh[:default])
0
+        end
0
+      elsif prefs.is_a?(Numeric)
0
+        @options.each do |idx, hsh|
0
+          instance_variable_set("@#{hsh[:key]}", (prefs & idx) != 0 ? true : false)
0
+        end
0
+      else
0
+        raise(ArgumentError, "Input must be numeric")
0
+      end
0
+      
0
+    end
0
+    
0
+    def [](key)
0
+      instance_variable_get("@#{key}")
0
+    end
0
+    
0
+    def []=(key, value)
0
+      idx, hsh = lookup(key)
0
+      instance_variable_set("@#{key}", value)
0
+      update_permissions
0
+    end
0
+    
0
+    def to_i
0
+      @options.inject(0) do |bv, (idx, hsh)|
0
+        bv |= instance_variable_get("@#{hsh[:key]}") ? idx : 0
0
+      end
0
+    end
0
+    
0
+    private
0
+    
0
+      def update_permissions
0
+        instance.write_attribute(instance.preferences_column, self.to_i)
0
+      end
0
+    
0
+      def is_true(value)
0
+        case value
0
+        when true, 1, /1|y|yes/i then true
0
+        else false
0
+        end
0
+      end
0
+      
0
+      def lookup(key)
0
+        @options.find { |idx, hsh| hsh[:key] == key.to_sym }
0
+      end
0
+    
0
+  end
0
+  
0
+  def self.included(receiver)
0
+    receiver.extend         ClassMethods
0
+    receiver.send :include, InstanceMethods
0
+  end
0
+end
0
+
0
+# module PreferenceFu
0
+#     
0
+#   def has_preferences(*attrs)
0
+#     
0
+#     class_eval do
0
+#       
0
+#       Preferences.set_options = *attrs
0
+#             
0
+#       composed_of :preferences, :class_name => 'PreferenceFu::Preferences'
0
+#       
0
+#     end
0
+#     
0
+#   end
0
+#   
0
+#   class Preferences
0
+#         
0
+#     cattr_accessor :options
0
+#     
0
+#     class << self
0
+#       
0
+#       def set_options=(hsh)
0
+#         idx = 0; @@options = {}
0
+#         hsh.each do |pref, default|
0
+#           @@options[2**idx] = { :key => pref.to_sym, :default => default }
0
+#           attr_reader pref.to_sym
0
+#           idx += 1
0
+#         end
0
+#         
0
+#         @@options
0
+#       end
0
+#       
0
+#     end
0
+#     
0
+#     def initialize(prefs)
0
+#       if prefs.nil? or prefs.is_a?(Hash)
0
+#         @@options.each do |idx, hsh|
0
+#           instance_variable_set("@#{hsh[:key]}", hsh[:default])
0
+#         end
0
+#       end
0
+#       
0
+#       if prefs.is_a?(Hash)
0
+#         prefs.each do |key, value|
0
+#           instance_variable_set("@#{key}", true) if is_true(value)
0
+#         end
0
+#       elsif prefs.is_a?(Numeric)  
0
+#         @@options.each do |idx, hsh|
0
+#           instance_variable_set("@#{hsh[:key]}", (prefs & idx) != 0 ? true : false)
0
+#         end
0
+#       end
0
+#       
0
+#     end
0
+#     
0
+#     def [](key)
0
+#       # true if key exists and is true
0
+#       instance_variable_get("@#{key}")
0
+#     end
0
+#     
0
+#     def set(key, value)
0
+#       # composed_of is immutable, and thus can only update with a new object
0
+#       # idx, hsh = lookup(key)
0
+#       # if idx
0
+#       #   @@options[idx][:value] = value
0
+#       #   instance_variable_set("@#{key}", value)
0
+#       # end
0
+#       Preferences.new(:download_stuff => true)
0
+#     end
0
+# 
0
+#     def to_hash
0
+#       @@options
0
+#     end
0
+#     
0
+#     def preferences
0
+#       @@options.inject(0) do |bv, (idx, hsh)|
0
+#         bv |= instance_variable_get("@#{hsh[:key]}") ? idx : 0
0
+#       end
0
+#     end
0
+#     
0
+#     private
0
+#       def is_true(value)
0
+#         case value
0
+#         when true, 1, /1|y|yes/i then true
0
+#         else false
0
+#         end
0
+#       end
0
+#       
0
+#       def lookup(key)
0
+#         @@options.find { |idx, hsh| hsh[:key] == key.to_sym }
0
+#       end
0
+#     
0
+#   end
0
+#   
0
+# end
0
\ No newline at end of file

0
@@ -0,0 +1,4 @@
0
+# desc "Explaining what the task does"
0
+# task :preference_fu do
0
+#   # Task goes here
0
+# end

0
@@ -0,0 +1,8 @@
0
+require 'test/unit'
0
+
0
+class PreferenceFuTest < Test::Unit::TestCase
0
+  # Replace this with your real tests.
0
+  def test_this_plugin
0
+    flunk
0
+  end
0
+end

0
@@ -0,0 +1 @@
0
+# Uninstall hook code here