gnome-scan r800 - in trunk: . lib

[bersace svn gnome org]

Author: bersace
Date: Sat Jan 31 13:34:05 2009
New Revision: 800
URL: http://svn.gnome.org/viewvc/gnome-scan?rev=800&view=rev

Log:
Added value setter from GValue.

Modified:
   trunk/ChangeLog
   trunk/lib/gnome-scan-option.vala

Modified: trunk/lib/gnome-scan-option.vala
==============================================================================
--- trunk/lib/gnome-scan-option.vala	(original)
+++ trunk/lib/gnome-scan-option.vala	Sat Jan 31 13:34:05 2009
@@ -49,6 +49,33 @@
 		public Gnome.Scan.Unit	unit		{get; set construct; default = Unit.NONE;}
 		public OptionHint		hint		{get; set construct;}
 		public bool				active		{get; set; default = true;}
+
+		public virtual void set_g_value(Value value)
+		{
+		}
+
+		// Helper function for set_g_value() implementation that copy
+		// or transform a value from src to dest.  Returns whether the
+		// operation was successful.
+		protected bool copy_or_transform_g_value(Value src, ref Value dest)
+		{
+			Type stype = src.type();
+			Type dtype = dest.type();
+
+			if (Value.type_compatible(stype, dtype)) {
+				src.copy(ref dest);
+				return true;
+			}
+			else if (Value.type_transformable(stype, dtype)) {
+				src.transform(ref dest);
+				return true;
+			}
+			else {
+				warning("Unable to set %s value for %s",
+						stype.name(), dtype.name());
+				return false;
+			}
+		}
 	}
 
 	public class OptionBool : Option {
@@ -64,6 +91,13 @@
 			this.value = value;
 			this.hint = hint;
 		}
+
+		public override void set_g_value(Value value)
+		{
+			Value oval = Value(typeof(bool));
+			if (this.copy_or_transform_g_value(value, ref oval))
+				this.value = oval.get_boolean();
+		}
 	}
 
 	public class OptionInt : Option {
@@ -86,6 +120,13 @@
 			this.unit = unit;
 			this.hint = hint;
 		}
+
+		public override void set_g_value(Value value)
+		{
+			Value oval = Value(typeof(int));
+			if (this.copy_or_transform_g_value(value, ref oval))
+				this.value = oval.get_int();
+		}
 	}
 
 	public class OptionDouble : Option {
@@ -108,6 +149,13 @@
 			this.unit = unit;
 			this.hint = hint;
 		}
+
+		public override void set_g_value(Value value)
+		{
+			Value oval = Value(typeof(double));
+			if (this.copy_or_transform_g_value(value, ref oval))
+				this.value = oval.get_double();
+		}
 	}
 
 	public class OptionString : Option {