ImageValueViewer now works and the viewer control is refreshed

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@55 0fc631ac-6414-0410-93d0-97cfa31319b6

src/render/card/viewer.cpp

@@ -88,6 +88,7 @@ void DataViewer::setData(IndexMap<FieldP,ValueP>& values) {
 	FOR_EACH(v, viewers) {
 		v->setValue(values[v->getField()]);
 	}
+	onChange();
 }
 
 

src/render/card/viewer.hpp

@@ -67,6 +67,9 @@ class DataViewer : public SetView {
 	/// Update the viewers and forward actions
 	virtual void onAction(const Action&, bool undone);
 	
+	/// Notification that the total image has changed
+	virtual void onChange() {}
+	
   private:
 	vector<ValueViewerP> viewers; ///< The viewers for the different values in the data
 };