//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
Panel *FocusNavGroup::GetDefaultPanel()
{
for (int i = 0; i < _mainPanel->GetChildCount(); i++)
{
Panel *child = _mainPanel->GetChild(i);
if ( !child )
continue;
if (child->GetTabPosition() == 1)
{
return child;
}
}
return NULL; // no specific panel set
}
//-----------------------------------------------------------------------------
// Purpose: Sets the focus to the previous panel in the tab order
// Input : *panel - panel currently with focus
//-----------------------------------------------------------------------------
bool FocusNavGroup::RequestFocusPrev(VPANEL panel)
{
if(panel==NULL)
return false;
_currentFocus = NULL;
int newPosition = 9999999;
if (panel)
{
newPosition = ipanel()->GetTabPosition(panel);
}
bool bFound = false;
bool bRepeat = true;
Panel *best = NULL;
while (1)
{
newPosition--;
if (newPosition > 0)
{
int bestPosition = 0;
// look for the next tab position
for (int i = 0; i < _mainPanel->GetChildCount(); i++)
{
Panel *child = _mainPanel->GetChild(i);
if (child && child->IsVisible() && child->IsEnabled() && child->GetTabPosition())
{
int tabPosition = child->GetTabPosition();
if (tabPosition == newPosition)
{
// we've found the right tab
best = child;
bestPosition = newPosition;
// don't loop anymore since we've found the correct panel
break;
}
else if (tabPosition < newPosition && tabPosition > bestPosition)
{
// record the match since this is the closest so far
bestPosition = tabPosition;
best = child;
}
}
}
if (!bRepeat)
break;
if (best)
break;
}
else
{
// reset new position for next loop
newPosition = 9999999;
}
// haven't found an item
if (!_topLevelFocus)
{
// check to see if we should push the focus request up
if (_mainPanel->GetVParent() && _mainPanel->GetVParent() != surface()->GetEmbeddedPanel())
{
// we're not a top level panel, so forward up the request instead of looping
if (ipanel()->RequestFocusPrev(_mainPanel->GetVParent(), _mainPanel->GetVPanel()))
{
bFound = true;
SetCurrentDefaultButton(NULL);
break;
}
}
}
// not found an item, loop back
newPosition = 9999999;
bRepeat = false;
}
if (best)
{
_currentFocus = best->GetVPanel();
best->RequestFocus(-1);
bFound = true;
if (!CanButtonBeDefault(best->GetVPanel()))
{
if (_defaultButton)
{
SetCurrentDefaultButton(_defaultButton);
}
else
{
SetCurrentDefaultButton(NULL);
// we need to ask the parent to set its default button
if (_mainPanel->GetVParent())
{
ivgui()->PostMessage(_mainPanel->GetVParent(), new KeyValues("FindDefaultButton"), NULL);
}
}
}
else
{
SetCurrentDefaultButton(best->GetVPanel());
}
}
return bFound;
}
//-----------------------------------------------------------------------------
// Purpose: Sets the focus to the previous panel in the tab order
// Input : *panel - panel currently with focus
//-----------------------------------------------------------------------------
bool FocusNavGroup::RequestFocusNext(VPANEL panel)
{
// basic recursion guard, in case user has set up a bad focus hierarchy
static int stack_depth = 0;
stack_depth++;
_currentFocus = NULL;
int newPosition = 0;
if (panel)
{
newPosition = ipanel()->GetTabPosition(panel);
}
bool bFound = false;
bool bRepeat = true;
Panel *best = NULL;
while (1)
{
newPosition++;
int bestPosition = 999999;
// look for the next tab position
for (int i = 0; i < _mainPanel->GetChildCount(); i++)
{
Panel *child = _mainPanel->GetChild(i);
if ( !child )
continue;
if (child && child->IsVisible() && child->IsEnabled() && child->GetTabPosition())
{
int tabPosition = child->GetTabPosition();
if (tabPosition == newPosition)
{
// we've found the right tab
best = child;
bestPosition = newPosition;
// don't loop anymore since we've found the correct panel
break;
}
else if (tabPosition > newPosition && tabPosition < bestPosition)
{
// record the match since this is the closest so far
bestPosition = tabPosition;
best = child;
}
}
}
if (!bRepeat)
break;
if (best)
break;
// haven't found an item
// check to see if we should push the focus request up
if (!_topLevelFocus)
{
if (_mainPanel->GetVParent() && _mainPanel->GetVParent() != surface()->GetEmbeddedPanel())
{
// we're not a top level panel, so forward up the request instead of looping
if (stack_depth < 15)
{
if (ipanel()->RequestFocusNext(_mainPanel->GetVParent(), _mainPanel->GetVPanel()))
{
bFound = true;
SetCurrentDefaultButton(NULL);
break;
}
// if we find one then we break, otherwise we loop
}
}
}
// loop back
newPosition = 0;
bRepeat = false;
}
if (best)
{
_currentFocus = best->GetVPanel();
best->RequestFocus(1);
bFound = true;
if (!CanButtonBeDefault(best->GetVPanel()))
{
if (_defaultButton)
{
SetCurrentDefaultButton(_defaultButton);
}
else
{
SetCurrentDefaultButton(NULL);
// we need to ask the parent to set its default button
if (_mainPanel->GetVParent())
{
ivgui()->PostMessage(_mainPanel->GetVParent(), new KeyValues("FindDefaultButton"), NULL);
}
}
}
else
{
SetCurrentDefaultButton(best->GetVPanel());
}
}
stack_depth--;
return bFound;
}
