///////////////////////////////////////////////////////////////////////////////
// MODULE	PanelManagement
// PURPOSE	Some functions shared by all panels.
//			Just insert the following in all your panel callbacks
//			case EVENT_KEYPRESS:	
//				HandlePanelDefaultKeys(panel, eventData1);
//				break;
///////////////////////////////////////////////////////////////////////////////

#include <userint.h>
#include <iso646.h>
#include "PanelManagement.h"

///////////////////////////////////////////////////////////////////////////////
// FUNCTION	HandlePanelDefaultKeys
/// HIFN	Handle function keys common between panels
/// HIPAR	panel/handle of the calling panel
/// HIPAR	eventData1/In case of EVENT_KEYPRESS
///////////////////////////////////////////////////////////////////////////////
void HandlePanelDefaultKeys(int panel, int eventData1) {
	switch (eventData1) {
		// Use [Ctrl][Shift][->] or Ctrl-] to navigate to the next panel
		case VAL_SHIFT_AND_MENUKEY | VAL_LEFT_ARROW_VKEY:
		case VAL_MENUKEY_MODIFIER | '[':	
			ShowPreviousPanel(panel); 
			break;
		
		// Use [Ctrl][Shift][<-] or Ctrl-[ to navigate to the previous panel
		case VAL_SHIFT_AND_MENUKEY | VAL_RIGHT_ARROW_VKEY:
		case VAL_MENUKEY_MODIFIER | ']':	
			ShowNextPanel(panel); 
			break;
		
		// Use [Ctrl][P] to print the current panel
		case VAL_MENUKEY_MODIFIER  | 'P':	
			PrintPanel (panel, "", 1, VAL_VISIBLE_AREA, 1);
			break;
			
		// Use [Ctrl][0] to center the current panel
		case VAL_MENUKEY_MODIFIER  | '0':	
			CenterPanel(panel);
			break;
	}
}

///////////////////////////////////////////////////////////////////////////////
// FUNCTION: ShowPreviousPanel
// PURPOSE:  Move to the previous visible panel with the same parent
///////////////////////////////////////////////////////////////////////////////
void ShowPreviousPanel(int panel) {
	int Next, Parent, First, Visible, Current=-1;
	GetPanelAttribute (panel, ATTR_PANEL_PARENT, &Parent);
	GetPanelAttribute (Parent, ATTR_FIRST_CHILD, &First);
	Next=First;
	do {
		GetPanelAttribute (Next, ATTR_VISIBLE, &Visible);
		if (Visible) Current=Next;
		GetPanelAttribute (Next, ATTR_NEXT_PANEL, &Next);
		if (Next==0) Next=First;
	} while (Next!=panel or Current<0);
	// SetPanelAttribute (Next, ATTR_ZPLANE_POSITION, 0);
	SetActivePanel(Current);
}

///////////////////////////////////////////////////////////////////////////////
// FUNCTION: ShowNextPanel
// PURPOSE:  Move to the next visible panel with the same parent
///////////////////////////////////////////////////////////////////////////////
void ShowNextPanel(int panel) {
	int Next, Parent, Visible;
	Next=panel;
	do {
		GetPanelAttribute (Next, ATTR_NEXT_PANEL, &Next);
		if (Next==0) { 
			GetPanelAttribute (panel, ATTR_PANEL_PARENT, &Parent);
			GetPanelAttribute (Parent, ATTR_FIRST_CHILD, &Next);
		}
		GetPanelAttribute (Next, ATTR_VISIBLE, &Visible);
	} while (!Visible);
	// SetPanelAttribute (Next, ATTR_ZPLANE_POSITION, 0);
	SetActivePanel(Next);
}


///////////////////////////////////////////////////////////////////////////////
// FUNCTION: CenterPanel
// PURPOSE:  Center the panel in the closest monitor
///////////////////////////////////////////////////////////////////////////////
void CenterPanel(int panel) {
	int Monitor, Top, Left, Height, Width, PanelWidth, PanelHeight;
	
	GetMonitorFromPanel(panel, &Monitor);
	GetMonitorAttribute(Monitor, ATTR_TOP,    &Top);
	GetMonitorAttribute(Monitor, ATTR_LEFT,   &Left);
	GetMonitorAttribute(Monitor, ATTR_WIDTH,  &Width);
	GetMonitorAttribute(Monitor, ATTR_HEIGHT, &Height);
	
	GetPanelAttribute(panel, ATTR_WIDTH,  &PanelWidth);
	GetPanelAttribute(panel, ATTR_HEIGHT, &PanelHeight);
	
	SetPanelPos (panel, Top+(Height-PanelHeight)/2, Left+(Width-PanelWidth)/2);
}