UIControls can be disabled, added blacklist to TextBox control

Data/Scripts/801_UI controls/Control elements/001_BaseControl.rb

@@ -6,20 +6,22 @@
 #
 #===============================================================================
 class UIControls::BaseControl < BitmapSprite
-  attr_reader :value
-#  attr_accessor :disabled   # TODO: Make use of this.
+  attr_reader   :value
+  attr_accessor :disabled
 
-  TEXT_COLOR    = Color.black
-  TEXT_SIZE     = 18           # Default is 22 if size isn't explicitly set
-  HOVER_COLOR   = Color.cyan   # For clickable area when hovering over it
-  CAPTURE_COLOR = Color.pink   # For area you clicked in but aren't hovering over
+  TEXT_COLOR          = Color.black
+  TEXT_SIZE           = 18           # Default is 22 if size isn't explicitly set
+  HOVER_COLOR         = Color.cyan   # For clickable area when hovering over it
+  CAPTURE_COLOR       = Color.pink   # For area you clicked in but aren't hovering over
+  DISABLED_COLOR      = Color.gray
+  DISABLED_COLOR_DARK = Color.new(128, 128, 128)
 
   def initialize(width, height, viewport)
     super(width, height, viewport)
     self.bitmap.font.color = TEXT_COLOR
     self.bitmap.font.size = TEXT_SIZE
 
-#    @disabled = false   # TODO: Make use of this.
+    @disabled = false
     @hover_area = nil   # Is a symbol from the keys for @interactions if the mouse is hovering over that interaction
     @captured_area = nil   # Is a symbol from the keys for @interactions (or :none) if this control is clicked in
     clear_changed
@@ -58,6 +60,22 @@ class UIControls::BaseControl < BitmapSprite
 
   #-----------------------------------------------------------------------------
 
+  def disabled?
+    return @disabled
+  end
+
+  def disable
+    return if disabled?
+    @disabled = true
+    invalidate
+  end
+
+  def enable
+    return if !disabled?
+    @disabled = false
+    invalidate
+  end
+
   def invalid?
     return @invalid
   end
@@ -177,8 +195,7 @@ class UIControls::BaseControl < BitmapSprite
   # Updates the logic on the control, invalidating it if necessary.
   def update
     return if !self.visible
-    # TODO: Disabled control stuff.
-#    return if self.disabled
+    return if disabled? && !busy?
 
     update_hover_highlight