#include <raleigh/runtime.h>
#include <raleigh/window.h>
#include <popups/info.h>
#include <knob/heap.h>

#include <knob/format.h>

namespace raleigh {
  window::window(widget &root, _pixel_t bg_color, bool (*on_close)(window &))
    : handle(0), size(root.size), root(root), focussed(&root),
      bg_color(bg_color), on_close(on_close) {
    root.w = this;
    root.window_offset = coord(0, 0);
    root.notify_window_change();

    pixbuf = new _pixel_t[size.x * size.y];
    if (!pixbuf)
      show_error_and_quitf("Failed to create %d byte pixel buffer\nfor requested %dx%d pixel window.", size.x * size.y * sizeof(_pixel_t), size.x, size.y);

    paint_full();
    root.on_focus();
    needs_repaint = false;
  }

  window::try_actions_return_t window::try_actions() {
    struct window_action wa;
    window::try_actions_return_t got = NONE;
    while (1) {
      _get_win_action(handle, &wa);
      if (!wa.action_type) {
        if (needs_repaint) {
          needs_repaint = false;
          _paint_window(handle);
        }
        return got;
      }
      if ((wa.action_type == wa.KEY_DOWN) &&
          (wa.as_key.modifiers & wa.as_key.ALTS) &&
          (wa.as_key.key_id == wa.as_key.KEY_F4))
        if (!on_close || on_close(*this))
          return DELETE;
      got = GOOD;
      if (wa.action_type == wa.MOUSE_DOWN)
        root.handle_click(coord(wa.as_mouse.x, wa.as_mouse.y), wa.as_mouse.which, false);
      else if (wa.action_type == wa.MOUSE_UP)
        root.handle_click(coord(wa.as_mouse.x, wa.as_mouse.y), wa.as_mouse.which, true);
      else if (wa.action_type == wa.KEY_DOWN)
        focussed->handle_key(wa.as_key);
      else if (wa.action_type == wa.FOCUS_ENTER)
        focussed->on_focus();
      else if (wa.action_type == wa.FOCUS_LEAVE)
        focussed->on_unfocus();
    }
  }

  void window::notify_needs_paint(widget &head) {
    if (head.closest_opaque)
      head.closest_opaque->paint(pixbuf, size.x);
    else
      paint_full();
    needs_repaint = true;
  }

  void window::paint_full() {
    for (uint32_t i = 0; i < size.x * size.y; ++i)
      pixbuf[i] = bg_color;
    root.paint(pixbuf, size.x);
  }

  void window::show() {
    if (handle)
      return;
    handle = _new_window(size.x, size.y, pixbuf);
    if (!handle)
      show_error_and_quitf("Failed to get window handle for requested window.");
    open_windows.add_front(*this);
  }

  void window::focus(widget &w) {
    if (focussed != &w) {
      focussed->on_unfocus();
      focussed = &w;
      focussed->on_focus();
    }
  }
}