Patch from Jim Wilson:

These changes add to the "Add Waypoint" dialog so that you can see the entire
list in the pui dialog that you are adding to.  Also made some minor changes
so that the autopilot is now activated (toward first waypoint target heading)
when a waypoint is added.

src/Autopilot/auto_gui.cxx

@@ -140,9 +140,15 @@ static puDialogBox     *TgtAptDialog = 0;
 static puFrame         *TgtAptDialogFrame = 0;
 static puText          *TgtAptDialogMessage = 0;
 static puInput         *TgtAptDialogInput = 0;
+static puListBox       *TgtAptDialogWPList = 0;
+static puSlider        *TgtAptDialogSlider = 0;
+static puArrowButton   *TgtAptDialogUPArrow = 0;
+static puArrowButton   *TgtAptDialogDNArrow = 0;
+static char**          WPList;
+static int             WPListsize;
 
 static char NewTgtAirportId[16];
-static char NewTgtAirportLabel[] = "Enter New TgtAirport ID"; 
+static char NewTgtAirportLabel[] = "New Apt/Fix ID";
 
 static puOneShot       *TgtAptDialogOkButton = 0;
 static puOneShot       *TgtAptDialogCancelButton = 0;
@@ -159,7 +165,6 @@ static int scan_number(char *s, double *new_value)
     char WordBuf[64];
     char *cptr = s;
     char *WordBufPtr = WordBuf;
-
     if (*cptr == '+')
 	cptr++;
     if (*cptr == '-') {
@@ -629,6 +634,11 @@ void TgtAptDialog_OK (puObject *)
 	 SGWayPoint wp( a.longitude, a.latitude, alt,
 			SGWayPoint::WGS84, TgtAptId );
 	 globals->get_route()->add_waypoint( wp );
+
+         /* and turn on the autopilot */
+         current_autopilot->set_HeadingEnabled( true );
+         current_autopilot->set_HeadingMode( FGAutopilot::FG_HEADING_WAYPOINT );
+
     } else if ( current_fixlist->query( TgtAptId, 0.0, 0.0, 0.0,
 					&f, &t1, &t2 ) )
     {
@@ -640,6 +650,10 @@ void TgtAptDialog_OK (puObject *)
 	 SGWayPoint wp( f.get_lon(), f.get_lat(), alt,
 			SGWayPoint::WGS84, TgtAptId );
 	 globals->get_route()->add_waypoint( wp );
+
+         /* and turn on the autopilot */
+         current_autopilot->set_HeadingEnabled( true );
+         current_autopilot->set_HeadingMode( FGAutopilot::FG_HEADING_WAYPOINT );
     } else {
 	TgtAptId  += " not in database.";
 	mkDialog(TgtAptId.c_str());
@@ -653,11 +667,84 @@ void TgtAptDialog_Reset(puObject *)
     TgtAptDialogInput->setCursor( 0 ) ;
 }
 
+void TgtAptDialog_HandleSlider ( puObject * slider )
+{
+  float val ;
+  slider -> getValue ( &val ) ;
+  val = 1.0f - val ;
+
+  int index = int ( TgtAptDialogWPList -> getNumItems () * val ) ;
+  TgtAptDialogWPList -> setTopItem ( index ) ;
+}
+
+void TgtAptDialog_HandleArrow( puObject *arrow )
+{
+    int type = ((puArrowButton *)arrow)->getArrowType() ;
+    int inc = ( type == PUARROW_DOWN     ) ?   1 :
+            ( type == PUARROW_UP       ) ?  -1 :
+            ( type == PUARROW_FASTDOWN ) ?  10 :
+            ( type == PUARROW_FASTUP   ) ? -10 : 0 ;
+
+    float val ;
+    TgtAptDialogSlider -> getValue ( &val ) ;
+    val = 1.0f - val ;
+    int num_items = TgtAptDialogWPList->getNumItems () - 1 ;
+    if ( num_items > 0 )
+    {
+      int index = int ( num_items * val + 0.5 ) + inc ;
+      if ( index > num_items ) index = num_items ;
+      if ( index < 0 ) index = 0 ;
+
+      TgtAptDialogSlider -> setValue ( 1.0f - (float)index / num_items ) ;
+      TgtAptDialogWPList -> setTopItem ( index ) ;
+  }
+
+}
+
 void AddWayPoint(puObject *cb)
 {
     sprintf( NewTgtAirportId, "%s", fgGetString("/sim/startup/airport-id").c_str() );
     TgtAptDialogInput->setValue( NewTgtAirportId );
     
+    /* refresh waypoint list */
+    char WPString[100];
+
+    int i;
+    if ( WPList != NULL ) {
+        for (i = 0; i < WPListsize; i++ ) {
+          delete WPList[i];
+        }
+        delete [] WPList[i];
+    }
+    if ( globals->get_route()->size() > 0 ) { 
+        WPListsize = globals->get_route()->size();
+        WPList = new char* [ WPListsize + 1 ];
+        for (i = 0; i < globals->get_route()->size(); i++ ) {
+           sprintf(WPString, "%5s %3.2flon %3.2flat", globals->get_route()->get_waypoint(i).get_id().c_str(), globals->get_route()->get_waypoint(i).get_target_lon(), globals->get_route()->get_waypoint(i).get_target_lat());
+           WPList [i] = new char[ strlen(WPString) ];
+           strcpy ( WPList [i], WPString );
+        }
+    } else {
+        WPListsize = 1;
+        WPList = new char* [ 2 ];
+        WPList [0] = new char[18];
+        strcpy ( WPList [0], "** List Empty **");
+    }    
+    WPList [ WPListsize ] = NULL;
+    TgtAptDialogWPList->newList( WPList );
+
+   // if non-empty list, adjust the size of the slider...
+   TgtAptDialogSlider->setSliderFraction (0.9999f) ;
+   TgtAptDialogSlider->hide();
+   TgtAptDialogUPArrow->hide();
+   TgtAptDialogDNArrow->hide();
+   if (WPListsize > 10) {
+      TgtAptDialogSlider->setSliderFraction (10.0f/(WPListsize-1)) ;
+      TgtAptDialogSlider->reveal();
+      TgtAptDialogUPArrow->reveal();
+      TgtAptDialogDNArrow->reveal();
+    }
+
     FG_PUSH_PUI_DIALOG( TgtAptDialog );
 }
 
@@ -693,13 +780,33 @@ void NewTgtAirportInit()
     int len = 150
         - puGetDefaultLabelFont().getStringWidth( NewTgtAirportLabel ) / 2;
     
-    TgtAptDialog = new puDialogBox (150, 50);
+    TgtAptDialog = new puDialogBox (150, 350);
     {
-        TgtAptDialogFrame   = new puFrame           (0,0,350, 150);
+        TgtAptDialogFrame   = new puFrame           (0,0,350, 350);
-        TgtAptDialogMessage = new puText            (len, 110);
-        TgtAptDialogMessage ->    setLabel          (NewTgtAirportLabel);
         
+        TgtAptDialogWPList = new puListBox ( 50, 130, 300, 320 ) ;
+        TgtAptDialogWPList -> setLabel ( "Flight Plan" );
+        TgtAptDialogWPList -> setLabelPlace ( PUPLACE_ABOVE ) ;
+        TgtAptDialogWPList -> setStyle ( -PUSTYLE_SMALL_SHADED ) ;
+        TgtAptDialogWPList -> setValue ( 0 ) ;
+
+        TgtAptDialogSlider = new puSlider (300, 150, 150 ,TRUE,20);
+        TgtAptDialogSlider->setValue(1.0f);
+        TgtAptDialogSlider->setSliderFraction (0.2f) ;
+        TgtAptDialogSlider->setDelta(0.1f);
+        TgtAptDialogSlider->setCBMode( PUSLIDER_DELTA );
+        TgtAptDialogSlider->setCallback( TgtAptDialog_HandleSlider );
+
+        TgtAptDialogUPArrow = new puArrowButton ( 300, 300, 320, 320, PUARROW_UP ) ;
+        TgtAptDialogUPArrow->setCallback ( TgtAptDialog_HandleArrow ) ;
+
+        TgtAptDialogDNArrow = new puArrowButton ( 300, 130, 320, 150, PUARROW_DOWN ) ;
+        TgtAptDialogDNArrow->setCallback ( TgtAptDialog_HandleArrow ) ;
+
+
         TgtAptDialogInput   = new puInput           (50, 70, 300, 100);
+        TgtAptDialogInput -> setLabel ( NewTgtAirportLabel );
+        TgtAptDialogInput -> setLabelPlace ( PUPLACE_ABOVE ) ;
         TgtAptDialogInput   ->    setValue          (NewTgtAirportId);
         TgtAptDialogInput   ->    acceptInput();
         
@@ -715,7 +822,12 @@ void NewTgtAirportInit()
         TgtAptDialogResetButton  =  new puOneShot   (240, 10, 300, 50);
         TgtAptDialogResetButton  ->     setLegend   (gui_msg_RESET);
         TgtAptDialogResetButton  ->     setCallback (TgtAptDialog_Reset);
+
     }
+
     FG_FINALIZE_PUI_DIALOG( TgtAptDialog );
     printf("leave NewTgtAirportInit()");
 }
+
+
+