#include <Spectre/System/Log.h>
#include "X11Window.h"
#include "X11WindowEventHandler.h"
#include <X11/Xresource.h>

namespace sp {

// Context used to store X11Window pointer.
::XContext X11WindowEventHandler::win_context = None;

void X11WindowEventHandler::registerHandler(::Display* disp, ::Window window, X11Window *ptr)
{
	// Initialize context before use.
	if (win_context == None) {
		win_context = XUniqueContext();
	}

	// Save pointer to window.
	XSaveContext(disp, window, win_context, (XPointer) ptr);
}

void X11WindowEventHandler::unregisterHandler(::Display* disp, ::Window window)
{
	// No context. nothing to do.
	if (win_context == None) {
		return;
	}

	XDeleteContext(disp, window, win_context);
}

void X11WindowEventHandler::process(::Display* disp, const ::XEvent& event)
{
	XPointer ptr;

	// No context. nothing to do.
	if (win_context == None) {
		return;
	}

	// Get the pointer for window ID.
	if (XFindContext(disp, event.xany.window, win_context, &ptr) == 0) {
		X11Window* disp_ptr = (X11Window*) ptr;

		// Delegate
		disp_ptr->processEvent(event);
	}
}

} // namespace sp