+Add method to get mdi view by view provider, add method to get flag widgets

src/Gui/Document.cpp

@@ -1111,6 +1111,19 @@ MDIView* Document::getActiveView(void) const
     return active;
 }
 
+Gui::MDIView* Document::getViewOfViewProvider(Gui::ViewProvider* vp) const
+{
+    std::list<MDIView*> mdis = getMDIViews();
+    for (std::list<MDIView*>::const_iterator it = mdis.begin(); it != mdis.end(); ++it) {
+        if ((*it)->getTypeId().isDerivedFrom(View3DInventor::getClassTypeId())) {
+            View3DInventor* view = static_cast<View3DInventor*>(*it);
+            if (view->getViewer()->hasViewProvider(vp))
+                return *it;
+        }
+    }
+
+    return 0;
+}
 
 //--------------------------------------------------------------------------
 // UNDO REDO transaction handling  

src/Gui/Document.h

@@ -135,6 +135,7 @@ public:
     //@{
     /// Getter for the active view
     Gui::MDIView* getActiveView(void) const;
+    Gui::MDIView* getViewOfViewProvider(Gui::ViewProvider*) const;
     /// Creat a new view
     void createView(const char* sType); 
     /** send messages to the active view 

src/Gui/Flag.cpp

@@ -503,6 +503,24 @@ void GLFlagWindow::removeFlag(Flag* item)
     }
 }
 
+Flag* GLFlagWindow::getFlag(int index) const
+{
+    if (_flagLayout) {
+        QWidget* flag = _flagLayout->itemAt(index)->widget();
+        return qobject_cast<Flag*>(flag);
+    }
+    return 0;
+}
+
+int GLFlagWindow::countFlags() const
+{
+    if (_flagLayout) {
+        return _flagLayout->count();
+    }
+
+    return 0;
+}
+
 void GLFlagWindow::paintGL()
 {
     // draw lines for the flags

src/Gui/Flag.h

@@ -150,6 +150,8 @@ public:
     void addFlag(Flag* item, FlagLayout::Position pos);
     void removeFlag(Flag* item);
     void deleteFlags();
+    Flag* getFlag(int) const;
+    int countFlags() const;
 
     void paintGL();