comparison base/PropertyContainer.h @ 387:7aa1de571880

* juggle some files around in order to free audioio, base, and system libraries
  from dependency on QtGui

      * global ColourDatabase.
      */
     virtual void setProperty(const PropertyName &, int value);
 
     /**
-     * Set a property using a command, supporting undo and redo.
-     * The default implementation should work for most subclasses.
+     * Obtain a command that sets the given property, which can be
+     * added to the command history for undo/redo.  Returns NULL
+     * if the property is already set to the given value.
      */
-    virtual void setPropertyWithCommand(const PropertyName &, int value);
+    virtual Command *getSetPropertyCommand(const PropertyName &, int value);
 
     /**
      * Set a property using a fuzzy match.  Compare nameString with
      * the property labels and underlying names, and if it matches one
      * (with preference given to labels), try to convert valueString

      * The default implementation should work for most subclasses.
      */
     virtual void setProperty(QString nameString, QString valueString);
 
     /**
-     * As above, but using a command.
+     * As above, but returning a command.
      */
-    virtual void setPropertyWithCommand(QString nameString, QString valueString);
+    virtual Command *getSetPropertyCommand(QString nameString, QString valueString);
 
 protected:
 
     class SetPropertyCommand : public Command
     {