X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a717bd116a13ce2239c40d1d2aa877300fc3351c..0d1c8f39baaaeb7a7f757091209eab471ef5dbc4:/src/common/bookctrl.cpp

diff --git a/src/common/bookctrl.cpp b/src/common/bookctrl.cpp
index 9b7c964e24..d1e7bcbe01 100644
--- a/src/common/bookctrl.cpp
+++ b/src/common/bookctrl.cpp
@@ -42,6 +42,9 @@ IMPLEMENT_ABSTRACT_CLASS(wxBookCtrlBase, wxControl)
 
 BEGIN_EVENT_TABLE(wxBookCtrlBase, wxControl)
     EVT_SIZE(wxBookCtrlBase::OnSize)
+#if wxUSE_HELP
+    EVT_HELP(wxID_ANY, wxBookCtrlBase::OnHelp)
+#endif // wxUSE_HELP
 END_EVENT_TABLE()
 
 // ----------------------------------------------------------------------------
@@ -158,6 +161,64 @@ wxSize wxBookCtrlBase::DoGetBestSize() const
     return best;
 }
 
+#if wxUSE_HELP
+
+void wxBookCtrlBase::OnHelp(wxHelpEvent& event)
+{
+    // determine where does this even originate from to avoid redirecting it
+    // back to the page which generated it (resulting in an infinite loop)
+
+    // notice that we have to check in the hard(er) way instead of just testing
+    // if the event object == this because the book control can have other
+    // subcontrols inside it (e.g. wxSpinButton in case of a notebook in wxUniv)
+    wxWindow *source = wxStaticCast(event.GetEventObject(), wxWindow);
+    while ( source && source->GetParent() != this )
+    {
+        source = source->GetParent();
+    }
+
+    if ( source && m_pages.Index(source) == wxNOT_FOUND )
+    {
+        // this event is for the book control itself, redirect it to the
+        // corresponding page
+        wxWindow *page = NULL;
+
+        if ( event.GetOrigin() == wxHelpEvent::Origin_HelpButton )
+        {
+            // show help for the page under the mouse
+            const int pagePos = HitTest(ScreenToClient(event.GetPosition()));
+
+            if ( pagePos != wxNOT_FOUND)
+            {
+                page = GetPage((size_t)pagePos);
+            }
+        }
+        else // event from keyboard or unknown source
+        {
+            // otherwise show the current page help
+            page = GetCurrentPage();
+        }
+
+        if ( page )
+        {
+            // change event object to the page to avoid infinite recursion if
+            // we get this event ourselves if the page doesn't handle it
+            event.SetEventObject(page);
+
+            if ( page->GetEventHandler()->ProcessEvent(event) )
+            {
+                // don't call event.Skip()
+                return;
+            }
+        }
+    }
+    //else: event coming from one of our pages already
+
+    event.Skip();
+}
+
+#endif // wxUSE_HELP
+
 // ----------------------------------------------------------------------------
 // pages management
 // ----------------------------------------------------------------------------
@@ -236,6 +297,7 @@ wxRect wxBookCtrlBase::GetPageRect() const
 
     wxPoint pt;
     wxRect rectPage(pt, GetClientSize());
+
     switch ( GetWindowStyle() & wxBK_ALIGN_MASK )
     {
         default: