added currentLayerChanged

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@5113 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: rblazek

src/gui/qgisiface.cpp

@@ -24,9 +24,12 @@
 #include "qgisapp.h"
 #include "qgsmaplayer.h"
 #include "qgsmapcanvas.h"
+#include "qgslegend.h"
 
 QgisIface::QgisIface(QgisApp * _qgis, const char *name):qgis(_qgis)
 {
+    connect ( qgis->legend(), SIGNAL(currentLayerChanged(QgsMapLayer *)),
+              this, SLOT(emitCurrentLayerChanged(QgsMapLayer *)) );
 
 }
 
@@ -136,3 +139,9 @@ QgisIface::app()
 {
     return qgis;
 } // QgisIface::app()
+
+void QgisIface::emitCurrentLayerChanged ( QgsMapLayer * layer )
+{
+    // Does not compile
+    //emit currentLayerChanged ( layer );
+}

src/gui/qgisiface.h

@@ -104,6 +104,15 @@ class QgisIface : public QgisInterface{
         */
         QgisApp * app();
 
+    public slots:
+         void emitCurrentLayerChanged ( QgsMapLayer * layer );
+         
+
+    signals:
+         //! Emited whenever current (selected) layer changes
+         //  the pointer to layer can be null if no layer is selected
+         void currentLayerChanged ( QgsMapLayer * layer );
+
     private:
 
         /// QgisIface aren't copied