translations

[enigma2.git] / lib / gui / elistbox.cpp

diff --git a/lib/gui/elistbox.cpp b/lib/gui/elistbox.cpp
index 1dae137fdab5b0f99b0498fade511e0d9ad6fe32..dc735f85a391acdb8814daddf9e96fc092bafdbc 100644 (file)
--- a/lib/gui/elistbox.cpp
+++ b/lib/gui/elistbox.cpp
@@ -9,6 +9,8 @@ eListbox::eListbox(eWidget *parent): eWidget(parent)
        ePtr<eActionMap> ptr;
        eActionMap::getInstance(ptr);
        
+       m_itemheight = 25;
+       
        ptr->bindAction("ListboxActions", 0, 0, this);
 }
 
@@ -22,11 +24,17 @@ eListbox::~eListbox()
 void eListbox::setContent(iListboxContent *content)
 {
        m_content = content;
+       if (content)
+               m_content->setListbox(this);
        entryReset();
 }
 
 void eListbox::moveSelection(int dir)
 {
+               /* refuse to do anything without a valid list. */
+       if (!m_content)
+               return;
+               
                /* we need the old top/sel to see what we have to redraw */
        int oldtop = m_top;
        int oldsel = m_selected;
@@ -43,17 +51,39 @@ void eListbox::moveSelection(int dir)
                if (!m_content->cursorValid())
                        m_content->cursorMove(-1);
                break;
+       case pageUp:
+               if (m_content->cursorGet() >= m_items_per_page)
+               {
+                       m_content->cursorMove(-m_items_per_page);
+                       m_top -= m_items_per_page;
+                       if (m_top < 0)
+                               m_top = 0;
+               } else
+               {
+                       m_top = 0;
+                       m_content->cursorHome();
+               }
+               break;
        case moveTop:
                m_content->cursorHome();
                m_top = 0; /* align with top, speeds up process */
                break;
+
+       case pageDown:
+               m_content->cursorMove(m_items_per_page);
+               if (m_content->cursorValid())
+                       break;
+                               /* fall through */
        case moveEnd:
                        /* move to last existing one ("end" is already invalid) */
                m_content->cursorEnd(); m_content->cursorMove(-1); 
-               
-               m_top = m_content->cursorGet() - m_items_per_page + 1;
-               if (m_top < 0)
-                       m_top = 0;
+                       /* current selection invisible? */
+               if (m_top + m_items_per_page <= m_content->cursorGet())
+               {
+                       m_top = m_content->cursorGet() - m_items_per_page + 1;
+                       if (m_top < 0)
+                               m_top = 0;
+               }
                break;
        case justCheck:
                break;
@@ -98,8 +128,9 @@ int eListbox::event(int event, void *data, void *data2)
        {
                ePtr<eWindowStyle> style;
                
+               if (!m_content)
+                       return eWidget::event(event, data, data2);
                assert(m_content);
-               recalcSize(); // move to event
                
                getStyle(style);
                
@@ -113,7 +144,7 @@ int eListbox::event(int event, void *data, void *data2)
                
                for (int y = 0, i = 0; i < m_items_per_page; y += m_itemheight, ++i)
                {
-                       m_content->paint(painter, *style, ePoint(0, y), m_selected == m_content->cursorGet());
+                       m_content->paint(painter, *style, ePoint(0, y), m_selected == m_content->cursorGet() && m_content->size());
                        m_content->cursorMove(+1);
                }
                
@@ -121,9 +152,17 @@ int eListbox::event(int event, void *data, void *data2)
                
                return 0;
        }
+       case evtChangedSize:
+               recalcSize();
+               return eWidget::event(event, data, data2);
+               
        case evtAction:
-               moveSelection((int)data2);
-               return 1;
+               if (isVisible())
+               {
+                       moveSelection((int)data2);
+                       return 1;
+               }
+               return 0;
        default:
                return eWidget::event(event, data, data2);
        }
@@ -131,11 +170,19 @@ int eListbox::event(int event, void *data, void *data2)
 
 void eListbox::recalcSize()
 {
-       m_itemheight = 20;
        m_content->setSize(eSize(size().width(), m_itemheight));
        m_items_per_page = size().height() / m_itemheight;
 }
 
+void eListbox::setItemHeight(int h)
+{
+       if (h)
+               m_itemheight = h;
+       else
+               m_itemheight = 20;
+       recalcSize();
+}
+
 void eListbox::entryAdded(int index)
 {
                /* manage our local pointers. when the entry was added before the current position, we have to advance. */
@@ -183,9 +230,9 @@ void eListbox::entryChanged(int index)
 
 void eListbox::entryReset()
 {
-       invalidate();
        if (m_content)
                m_content->cursorHome();
        m_top = 0;
        m_selected = 0;
+       invalidate();
 }