listbox: validate m_items_per_page a bit more

diff --git a/lib/gui/elistbox.cpp b/lib/gui/elistbox.cpp
index bfa09b88844a649a5147226c92b529b0fd5b5376..aba7443227d23a83598643ac21cc445f7fbe941c 100644 (file)
--- a/lib/gui/elistbox.cpp
+++ b/lib/gui/elistbox.cpp
@@ -15,6 +15,8 @@ eListbox::eListbox(eWidget *parent)
        m_itemheight = 25;
        m_selection_enabled = 1;
        
+       m_items_per_page = 0;
+       
        ptr->bindAction("ListboxActions", 0, 0, this);
 }
 
@@ -281,6 +283,10 @@ void eListbox::recalcSize()
        m_prev_scrollbar_page=-1;
        m_content->setSize(eSize(size().width(), m_itemheight));
        m_items_per_page = size().height() / m_itemheight;
+
+       if (m_items_per_page < 0) /* TODO: whyever - our size could be invalid, or itemheigh could be wrongly specified. */
+               m_items_per_page = 0;
+
        moveSelection(justCheck);
 }