Ported patch from thunder2 (http://sourceforge.net/tracker/index.php?func=detail&aid=2991827&group_id=178712&atid=886241)

- Bug fix: Checkbox for automatic share of the incoming directory doesn't correctly set with setDown, use setChecked
- ShareManager and RSettingsWin doesn't need to be created all the time
- RSettingsWin: Save the last active page for the current runtime
- ShareManager and DirectoryPage: Show changed shared directories direct after the change




git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@2777 b45a01b8-16f6-495d-af2f-9b41ad6348cc

retroshare-gui/src/gui/settings/rsettingswin.cpp

@@ -35,11 +35,14 @@
 
 #include "rsettingswin.h"
 
+RSettingsWin *RSettingsWin::_instance = NULL;
+int RSettingsWin::lastPage = 0;
+
 RSettingsWin::RSettingsWin(QWidget * parent, Qt::WFlags flags)
                             : QDialog(parent, flags)
 {
     setupUi(this);
-    setAttribute(Qt::WA_QuitOnClose, false);
+    setAttribute(Qt::WA_DeleteOnClose, true);
     setModal(false);
 
     initStackedWidget();
@@ -48,12 +51,47 @@ RSettingsWin::RSettingsWin(QWidget * parent, Qt::WFlags flags)
     connect(okButton, SIGNAL(clicked( bool )), this, SLOT( saveChanges()) );
 }
 
+RSettingsWin::~RSettingsWin()
+{
+    lastPage = stackedWidget->currentIndex ();
+    _instance = NULL;
+}
+
 void
 RSettingsWin::closeEvent (QCloseEvent * event)
 {
     QWidget::closeEvent(event);
 }
 
+/*static*/ void RSettingsWin::showYourself(QWidget *parent)
+{
+    if(_instance == NULL) {
+        _instance = new RSettingsWin(parent);
+    }
+
+    if (_instance->isHidden()) {
+        _instance->setNewPage(lastPage);
+    }
+    _instance->show();
+    _instance->activateWindow();
+}
+
+/*static*/ void RSettingsWin::postModDirectories(bool update_local)
+{
+    if (_instance == NULL || _instance->isHidden() || _instance->stackedWidget == NULL) {
+       return;
+    }
+
+    if (update_local) {
+        if (_instance->stackedWidget->currentIndex() == Directories) {
+            ConfigPage *Page = (ConfigPage*) _instance->stackedWidget->currentWidget();
+            if (Page) {
+                Page->load();
+            }
+        }
+    }
+}
+
 void
 RSettingsWin::initStackedWidget()
 {