layer.rb in flms-0.1.0

- old
+ new
@@ -1,7 +1,96 @@
 module Flms
   class Layer < ActiveRecord::Base
-    attr_accessible :name, :type
+    attr_accessible :name, :type,
+                    :width, :height, :z_index,
+                    :width_percent, :height_percent,
+                    :dom_remove, :active,
+                    :start_state_keyframe_attributes, :target_state_keyframe_attributes, :end_state_keyframe_attributes
 
     belongs_to :block
+
+    has_one :start_state_keyframe, dependent: :destroy
+    has_one :target_state_keyframe, dependent: :destroy
+    has_one :end_state_keyframe, dependent: :destroy
+    accepts_nested_attributes_for :start_state_keyframe, :target_state_keyframe, :end_state_keyframe
+
+    validates_presence_of :start_state_keyframe, :target_state_keyframe, :end_state_keyframe
+    validates :name, :'flms/css_name' => true
+    validates_uniqueness_of :name, scope: :block_id
+    validates_numericality_of :width, greater_than_or_equal_to: 0, allow_nil: true
+    validates_numericality_of :height, greater_than_or_equal_to: 0, allow_nil: true
+    validates_numericality_of :z_index, allow_nil: false
+
+    scope :ordered_by_scroll_start, joins: [ :start_state_keyframe ], order: 'flms_keyframes.scroll_start'
+    scope :is_active, conditions: { active: true }
+
+    before_save :calculate_scroll_starts
+
+    after_initialize :set_defaults
+
+    IMAGE_DISPLAY_MODES = %w(contain cover)
+
+    def view_object
+      @view_object ||= Flms::LayerViewObject.new(self)
+    end
+
+    def build_default_keyframes
+      self.start_state_keyframe ||= build_start_state_keyframe(layer: self)
+      self.target_state_keyframe ||= build_target_state_keyframe(layer: self)
+      self.end_state_keyframe ||= build_end_state_keyframe(layer: self)
+      self
+    end
+
+    def keyframes
+      [ start_state_keyframe, target_state_keyframe, end_state_keyframe ]
+    end
+
+    def scroll_start
+      start_state_keyframe.scroll_start
+    end
+
+    def scroll_end
+      start_state_keyframe.scroll_start +
+          start_state_keyframe.scroll_duration +
+          target_state_keyframe.scroll_duration +
+          end_state_keyframe.scroll_duration
+    end
+
+    def calculate_scroll_starts
+      target_state_keyframe.scroll_start = start_state_keyframe.scroll_start + start_state_keyframe.scroll_duration
+      end_state_keyframe.scroll_start = target_state_keyframe.scroll_start + target_state_keyframe.scroll_duration
+    end
+
+	  def width_percent
+      # It's ok for a layer to have an undefined width, so account for that here:
+      self.width ? (self.width * 100).to_i : nil
+    end
+
+    def width_percent= val
+      self.width = val.to_i / 100.0
+    end
+
+    def height_percent
+      # It's ok for a layer to have an undefined height, so account for that here:
+      self.height ? (self.height * 100).to_i : nil
+    end
+
+    def height_percent= val
+      self.height = val.to_i / 100.0
+    end
+
+  protected
+
+    # Set default values for this type of layer. Override this method in subclasses to customize.
+    def set_defaults
+      self.width ||= 0.20
+      self.height ||= 0.20
+    end
+
+  private
+
+    def must_be_css_hex_value
+      self.errors[:color] << 'must be a valid CSS hex color code' unless color =~ /^([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$/i
+    end
+
   end
-end
+end
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