Bug fix for FWindow::activatePrevWindow()

ChangeLog

@@ -1,3 +1,6 @@
+2016-06-26  Markus Gans  <guru.mail@muenster.de>
+	* Bug fix for FWindow::activatePrevWindow()
+
 2016-06-25  Markus Gans  <guru.mail@muenster.de>
 	* Move processNextEvent() code into sub functions
 

src/fdialog.cpp

@@ -753,6 +753,8 @@ void FDialog::onWindowActive (FEvent*)
 //----------------------------------------------------------------------
 void FDialog::onWindowInactive (FEvent*)
 {
+  FWindow::previous_widget = this;
+
   if ( isVisible() && isEnabled() )
     drawTitleBar();
 

src/fwidget.h

@@ -128,6 +128,7 @@ class FWidget : public FObject, public FTerm
    typedef std::vector<accelerator> Accelerators;
    Accelerators* accelerator_list;
 
+ protected:
    static struct widget_colors
    {
      short term_fg;
@@ -224,7 +225,6 @@ class FWidget : public FObject, public FTerm
      std::vector<bool> left;
    } double_flatline_mask;
 
- protected:
    int    xpos;
    int    ypos;
    int    width;

src/fwindow.cpp

@@ -6,6 +6,9 @@
 #include "fstatusbar.h"
 #include "fwindow.h"
 
+// static attributes
+FWindow* FWindow::previous_widget = 0;
+
 //----------------------------------------------------------------------
 // class FWindow
 //----------------------------------------------------------------------
@@ -87,8 +90,9 @@ void FWindow::hide()
 }
 
 //----------------------------------------------------------------------
-FWindow* FWindow::getWindowWidgetAt(int x, int y)
+FWindow* FWindow::getWindowWidgetAt (int x, int y)
 {
+  // returns the window object to the corresponding coordinates
   if ( statusBar() && statusBar()->getGeometryGlobal().contains(x,y) )
     return statusBar();
 
@@ -367,24 +371,14 @@ void FWindow::switchToPrevWindow()
 bool FWindow::activatePrevWindow()
 {
   // activate the previous window
-  if ( window_list && window_list->size() > 1 )
-  {
-    widgetList::const_iterator iter, begin;
-    iter  = window_list->end();
-    begin = window_list->begin();
-    --iter;
-    do
-    {
-      --iter;
-      FWindow* w = static_cast<FWindow*>(*iter);
+  FWindow* w = previous_widget;
+
   if ( w && ! w->isHiddenWindow() && ! w->isActiveWindow() )
   {
     setActiveWindow(w);
     return true;
   }
-    }
-    while ( iter != begin );
-  }
+  else
     return false;
 }
 

src/fwindow.h

@@ -46,6 +46,9 @@ class FWindow : public FWidget
  private:
    bool window_active;
 
+ protected:
+   static FWindow* previous_widget;
+
  private:
    FWindow (const FWindow&);
    FWindow& operator = (const FWindow&);