[ease] [api] Hide Element's "parent" to outsiders.

[Nate Stedman <natesm src gnome org>]

commit 2f7c9aba75114028d01e82f349810dd367fe8217
Author: Nate Stedman <natesm gmail com>
Date:   Tue Jul 27 06:39:33 2010 -0400

    [api] Hide Element's "parent" to outsiders.

 ease-core/ease-element.vala |   12 ++++++++++--
 src/ease-editor-embed.vala  |   12 ++++++------
 src/ease-editor-window.vala |    2 +-
 3 files changed, 17 insertions(+), 9 deletions(-)
---
diff --git a/ease-core/ease-element.vala b/ease-core/ease-element.vala
index 153ca7f..006309f 100644
--- a/ease-core/ease-element.vala
+++ b/ease-core/ease-element.vala
@@ -37,12 +37,12 @@ public abstract class Ease.Element : GLib.Object, UndoSource
 	/**
 	 * The { link Slide} that this Element is a part of.
 	 */
-	public Slide parent { get; set; }
+	internal Slide parent { get; set; }
 	
 	/**
 	 * The { link Document} that this Element is part of. get-only.
 	 */
-	public Document document { get { return parent.parent; } }
+	internal Document document { get { return parent.parent; } }
 	
 	/**
 	 * Creates an Element from a JsonObject
@@ -203,5 +203,13 @@ public abstract class Ease.Element : GLib.Object, UndoSource
 	 * If the Element has been edited by the user in the past.
 	 */
 	public bool has_been_edited { get; set; }
+	
+	/**
+	 * Notifies of changes to the Element.
+	 */
+	public void changed()
+	{
+		if (parent != null) parent.changed(parent);
+	}
 }
 
diff --git a/src/ease-editor-embed.vala b/src/ease-editor-embed.vala
index 5c58a79..a954393 100644
--- a/src/ease-editor-embed.vala
+++ b/src/ease-editor-embed.vala
@@ -573,7 +573,7 @@ public class Ease.EditorEmbed : ScrollableEmbed, UndoSource
 			
 			position_selection();
 			
-			selected.element.parent.changed(selected.element.parent);
+			selected.element.changed();
 		}
 		return true;
 	}
@@ -681,7 +681,7 @@ public class Ease.EditorEmbed : ScrollableEmbed, UndoSource
 		
 		position_selection();
 		
-		selected.element.parent.changed(selected.element.parent);
+		selected.element.changed();
 		
 		return true;
 	}
@@ -739,7 +739,7 @@ public class Ease.EditorEmbed : ScrollableEmbed, UndoSource
 				selected.translate(0, shift ?
 				                      -NUDGE_SHIFT_PIXELS : -NUDGE_PIXELS);
 				position_selection();			
-				selected.element.parent.changed(selected.element.parent);
+				selected.element.changed();
 				return true;
 			
 			case Key.DOWN:
@@ -750,7 +750,7 @@ public class Ease.EditorEmbed : ScrollableEmbed, UndoSource
 				selected.translate(0, shift ?
 				                      NUDGE_SHIFT_PIXELS : NUDGE_PIXELS);
 				position_selection();			
-				selected.element.parent.changed(selected.element.parent);
+				selected.element.changed();
 				return true;
 				
 			case Key.LEFT:
@@ -761,7 +761,7 @@ public class Ease.EditorEmbed : ScrollableEmbed, UndoSource
 				selected.translate(shift ?
 				                   -NUDGE_SHIFT_PIXELS : -NUDGE_PIXELS, 0);
 				position_selection();			
-				selected.element.parent.changed(selected.element.parent);
+				selected.element.changed();
 				return true;
 			
 			case Key.RIGHT:
@@ -772,7 +772,7 @@ public class Ease.EditorEmbed : ScrollableEmbed, UndoSource
 				selected.translate(shift ?
 				                   NUDGE_SHIFT_PIXELS : NUDGE_PIXELS, 0);
 				position_selection();			
-				selected.element.parent.changed(selected.element.parent);
+				selected.element.changed();
 				return true;
 			
 			case Key.BACKSPACE:
diff --git a/src/ease-editor-window.vala b/src/ease-editor-window.vala
index 9e8a2d7..246dbaa 100644
--- a/src/ease-editor-window.vala
+++ b/src/ease-editor-window.vala
@@ -618,7 +618,7 @@ public class Ease.EditorWindow : Gtk.Window
 						font_selection.get_font_name());
 						
 				// emit the "changed" signal on the element's slide
-				text.parent.changed(text.parent);
+				text.changed();
 				break;
 		}