Updated to svn tags/tracks-1.6

app/models/todo.rb

@@ -0,0 +1,123 @@
+class Todo < ActiveRecord::Base
+
+  belongs_to :context, :order => 'name'
+  belongs_to :project
+  belongs_to :user
+  
+  STARRED_TAG_NAME = "starred"
+  
+  acts_as_state_machine :initial => :active, :column => 'state'
+  
+  # when entering active state, also remove completed_at date. Looks like :exit
+  # of state completed is not run, see #679
+  state :active, :enter => Proc.new { |t| t[:show_from], t.completed_at = nil, nil }
+  state :project_hidden
+  state :completed, :enter => Proc.new { |t| t.completed_at = Time.now.utc }, :exit => Proc.new { |t| t.completed_at = nil }
+  state :deferred
+
+  event :defer do
+    transitions :to => :deferred, :from => [:active]
+  end
+  
+  event :complete do
+    transitions :to => :completed, :from => [:active, :project_hidden, :deferred]
+  end
+  
+  event :activate do
+    transitions :to => :active, :from => [:project_hidden, :completed, :deferred]
+  end
+    
+  event :hide do
+    transitions :to => :project_hidden, :from => [:active, :deferred]
+  end
+  
+  event :unhide do
+    transitions :to => :deferred, :from => [:project_hidden], :guard => Proc.new{|t| !t.show_from.blank? }
+    transitions :to => :active, :from => [:project_hidden]
+  end
+    
+  attr_protected :user
+
+  # Description field can't be empty, and must be < 100 bytes Notes must be <
+  # 60,000 bytes (65,000 actually, but I'm being cautious)
+  validates_presence_of :description
+  validates_length_of :description, :maximum => 100
+  validates_length_of :notes, :maximum => 60000, :allow_nil => true 
+  validates_presence_of :show_from, :if => :deferred?
+  validates_presence_of :context
+  
+  def validate
+    if !show_from.blank? && show_from < user.date
+      errors.add("show_from", "must be a date in the future")
+    end
+  end
+  
+  def toggle_completion!
+    saved = false
+    if completed?
+      saved = activate!
+    else
+      saved = complete!
+    end
+    return saved
+  end
+  
+  def show_from
+    self[:show_from]
+  end
+  
+  def show_from=(date)
+    activate! if deferred? && date.blank?
+    defer! if active? && !date.blank? && date > user.date
+    self[:show_from] = date 
+  end
+
+  alias_method :original_project, :project
+
+  def project
+    original_project.nil? ? Project.null_object : original_project
+  end
+  
+  alias_method :original_set_initial_state, :set_initial_state
+  
+  def set_initial_state
+    if show_from && (show_from > user.date)
+      write_attribute self.class.state_column, 'deferred'
+    else
+      original_set_initial_state
+    end
+  end
+  
+  alias_method :original_run_initial_state_actions, :run_initial_state_actions
+  
+  def run_initial_state_actions
+    # only run the initial state actions if the standard initial state hasn't
+    # been changed
+    if self.class.initial_state.to_sym == current_state
+      original_run_initial_state_actions
+    end
+  end
+
+  def self.feed_options(user)
+    {
+      :title => 'Tracks Actions',
+      :description => "Actions for #{user.display_name}"
+    }
+  end
+  
+  def starred?
+    tags.any? {|tag| tag.name == STARRED_TAG_NAME}
+  end
+  
+  def toggle_star!
+    if starred?
+      delete_tags STARRED_TAG_NAME
+      tags.reload
+    else
+      add_tag STARRED_TAG_NAME
+      tags.reload
+    end 
+    starred?  
+  end
+
+end