Shamusworld >> Repos - architektonas/blob - src/base/rs_layerlistlistener.h

   1 #ifndef RS_LAYERLISTLISTENER_H
   2 #define RS_LAYERLISTLISTENER_H
   3
   4 #include "rs_layer.h"
   5
   6 /**
   7  * This class is an interface for classes that are interested in
   8  * knowing about changes in the layer list.
   9  */
  10 class RS_LayerListListener
  11 {
  12         public:
  13                 RS_LayerListListener() {}
  14                 virtual ~RS_LayerListListener() {}
  15
  16                 /**
  17                 * Called when the active layer changes.
  18                 */
  19                 virtual void layerActivated(RS_Layer *) {}
  20
  21                 /**
  22                 * Called when a new layer is added to the list.
  23                 */
  24                 virtual void layerAdded(RS_Layer *) {}
  25
  26                 /**
  27                 * Called when a layer is removed from the list.
  28                 */
  29                 virtual void layerRemoved(RS_Layer *) {}
  30
  31                 /**
  32                 * Called when a layer's attributes are modified.
  33                 */
  34                 virtual void layerEdited(RS_Layer *) {}
  35
  36                 /**
  37                 * Called when a layer's visibility is toggled.
  38                 */
  39                 virtual void layerToggled(RS_Layer *) {}
  40 };
  41
  42 #endif