# HG changeset patch
# User Goffi <goffi@goffi.org>
# Date 1359070686 -3600
# Node ID ba95cd824e062d80e81a4a8225c760a27c03205e
# Parent  b9edfa058786bb450613617ecf071c3a9d0dd1cc
browser side: tab is removed if it doesn't contain widget anymore.

bug 8

diff -r b9edfa058786 -r ba95cd824e06 browser_side/panels.py
--- a/browser_side/panels.py	Mon Jan 14 00:28:56 2013 +0100
+++ b/browser_side/panels.py	Fri Jan 25 00:38:06 2013 +0100
@@ -172,13 +172,17 @@
         self.host.registerWidget(self)
 
     def _getWidgetsPanel(self):
-        return self.getParent().getParent().getParent() 
+        current = self
+        while current is not None and current.__class__ != WidgetsPanel:
+            current = current.getParent()
+        if current is None:
+            print "Error: can't find WidgetsPanel"
+        return current
     
     def onClick(self, sender):
         self.host.select(self)
 
     def onClose(self, sender):
-        print "onClose:", sender
         _widgetspanel = self._getWidgetsPanel()
         _widgetspanel.removeWidget(self)
 
@@ -901,6 +905,18 @@
         if _max_cols != self._max_cols:
             self._max_cols = _max_cols
             self._sizesAdjust()
+        current = self
+
+        blank_page = not [wid for wid in self.flextable if isinstance(wid, LiberviaWidget)] # do we still have widgets on the page ?
+
+        if blank_page and not isinstance(self.getParent(), MainDiscussionPanel):
+            #we now notice the MainTabPanel that the WidgetsPanel is empty and need to be removed
+            while current is not None:
+                if isinstance(current, MainTabPanel):
+                    current.onWidgetPanelRemove(self)
+                    return
+                current = current.getParent()
+            print "Error: no MainTabPanel found !"
 
     def getIndex(self, wid):
         return self.flextable.getIndex(wid)
@@ -953,7 +969,7 @@
         tab_panel_elt = self.getElement()
         _elts = doc().getElementsByClassName('gwt-TabBar')
         if not _elts.length:
-            print ("ERROR: not TabBar found, it should exist !")
+            print ("ERROR: no TabBar found, it should exist !")
             tab_bar_h = 0
         else:
             tab_bar_h = _elts.item(0).offsetHeight
@@ -966,6 +982,14 @@
         if self.getWidgetCount()>1:
             self.tabBar.setVisible(True)
             self.host.resize()
+
+    def onWidgetPanelRemove(self, panel):
+        """ Called when a child WidgetsPanel is empty and need to be removed """
+        self.remove(panel)
+        if self.getWidgetCount() == 1:
+            self.tabBar.setVisible(False)
+            self.host.resize()
+            self.selectTab(0)
         
 class MainPanel(AbsolutePanel):