Patch from larsl that makes it possible to use the GPS plugin GUI again

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@4881 c8812cc2-4d05-0410-92ff-de0c093fc19c

src/plugins/gps_importer/qgsgpsplugingui.cpp

@@ -38,6 +38,25 @@ QgsGPSPluginGui::QgsGPSPluginGui(const BabelMap& importers,
 
   connect(pbULEditDevices, SIGNAL(clicked()), this, SLOT(openDeviceEditor()));
   connect(pbDLEditDevices, SIGNAL(clicked()), this, SLOT(openDeviceEditor()));
+
+  // make sure that the OK button is enabled only when it makes sense to
+  // click it
+  connect(leGPXFile, SIGNAL(textChanged(const QString&)), 
+   this, SLOT(enableRelevantControls()));
+  connect(leIMPInput, SIGNAL(textChanged(const QString&)), 
+   this, SLOT(enableRelevantControls()));
+  connect(leIMPOutput, SIGNAL(textChanged(const QString&)), 
+   this, SLOT(enableRelevantControls()));
+  connect(leIMPLayer, SIGNAL(textChanged(const QString&)), 
+   this, SLOT(enableRelevantControls()));
+  connect(leDLOutput, SIGNAL(textChanged(const QString&)), 
+   this, SLOT(enableRelevantControls()));
+  connect(leDLBasename, SIGNAL(textChanged(const QString&)), 
+   this, SLOT(enableRelevantControls()));
+  connect(cmbULLayer, SIGNAL(textChanged(QString)), 
+   this, SLOT(enableRelevantControls()));
+  connect(tabWidget, SIGNAL(currentChanged(int)), 
+   this, SLOT(enableRelevantControls()));
 } 
 QgsGPSPluginGui::~QgsGPSPluginGui()
 {

src/plugins/gps_importer/qgsgpsplugingui.h

@@ -45,6 +45,7 @@ public slots:
 
   void openDeviceEditor();
   void devicesUpdated();
+  void enableRelevantControls();
 
   void on_pbnGPXSelectFile_clicked();
 
@@ -55,11 +56,9 @@ public slots:
 
   void on_pbnCancel_clicked();
   void on_pbnOK_clicked();
-  
+
 private:
 
-  void enableRelevantControls();
-
   void populateDeviceComboBox();
   void populateULLayerComboBox();
   void populateIMPBabelFormats();