/* -*- c-basic-offset:2; tab-width:2; indent-tabs-mode:nil -*- */

#ifdef USE_IM_PLUGIN
#import <Cocoa/Cocoa.h>
#endif

#include "../ui_im_status_screen.h"

#ifdef USE_IM_PLUGIN

#include <pobl/bl_mem.h>
#include <vt_char_encoding.h>

/* --- static functions --- */

/*
 * methods of ui_im_status_screen_t
 */

static void destroy(ui_im_status_screen_t* stat_screen) {
  NSWindow* window = stat_screen->window.my_window;

  [window release];

  free(stat_screen);
}

static void show(ui_im_status_screen_t* stat_screen) {
  NSWindow* window = stat_screen->window.my_window;

  [window orderFront:window];
}

static void hide(ui_im_status_screen_t* stat_screen) {
  NSWindow* window = stat_screen->window.my_window;

  [window orderOut:window];
}

static int set_spot(ui_im_status_screen_t* stat_screen, int x, int y) {
  NSWindow* window = stat_screen->window.my_window;

  [window
      setFrameOrigin:NSMakePoint(x, [[window screen] visibleFrame].size.height -
                                        [window.contentView frame].size.height -
                                        y)];

  stat_screen->x = x;
  stat_screen->y = y;

  return 1;
}

static int set(ui_im_status_screen_t* stat_screen, ef_parser_t* parser,
               const u_char* str) {
  size_t len;
  u_char* utf8;
  ef_char_t ch;
  u_int count;

  len = strlen(str);

  (*parser->init)(parser);
  (*parser->set_str)(parser, str, len);

  for (count = 0; (*parser->next_char)(parser, &ch); count++)
    ;

  if (!(utf8 = alloca(count * UTF_MAX_SIZE + 1))) {
    return 0;
  }

  (*parser->init)(parser);
  (*parser->set_str)(parser, str, len);
  len = vt_char_encoding_convert_with_parser(utf8, count * UTF_MAX_SIZE,
                                             VT_UTF8, parser);
  utf8[len] = '\0';

  NSWindow* window = stat_screen->window.my_window;
  NSTextField* label = window.contentView;

  label.stringValue =
      [NSString stringWithCString:utf8 encoding:NSUTF8StringEncoding];
  [label sizeToFit];
  [window setContentSize:label.frame.size];

  /* XXX (see ui_im_status_screen_new()) */
  if (stat_screen->filled_len == 1) {
    [window orderFront:window];
    set_spot(stat_screen, stat_screen->x, stat_screen->y);
    stat_screen->filled_len = 0;
  }

  return 1;
}

/* --- global functions --- */

ui_im_status_screen_t *ui_im_status_screen_new(ui_display_t* disp,
                                               ui_font_manager_t* font_man,
                                               ui_color_manager_t* color_man,
                                               void *vtparser, int is_vertical,
                                               u_int line_height,
                                               int x, int y) {
  ui_im_status_screen_t* stat_screen;

  if ((stat_screen = calloc(1, sizeof(ui_im_status_screen_t))) == NULL) {
#ifdef DEBUG
    bl_warn_printf(BL_DEBUG_TAG " malloc failed.\n");
#endif

    return NULL;
  }

  stat_screen->font_man = font_man;
  stat_screen->color_man = color_man;
  stat_screen->vtparser = vtparser;

  stat_screen->x = x;
  stat_screen->y = y;
  stat_screen->line_height = line_height;

  stat_screen->is_vertical = is_vertical;

  NSWindow* window =
      [[NSWindow alloc] initWithContentRect:NSMakeRect(0, 100, 0, 0)
                                  styleMask:NSBorderlessWindowMask
                                    backing:NSBackingStoreBuffered
                                      defer:YES];
  [window setLevel:NSStatusWindowLevel];

  NSTextField* label =
      [[NSTextField alloc] initWithFrame:NSMakeRect(0, 0, 10, 10)];
  label.drawsBackground = YES;
  [label setEditable:NO];
  [label setSelectable:NO];

  ui_color_t* fg = ui_get_xcolor(stat_screen->color_man, VT_FG_COLOR);
  ui_color_t* bg = ui_get_xcolor(stat_screen->color_man, VT_BG_COLOR);
  [label
      setTextColor:[NSColor
                       colorWithCalibratedRed:((fg->pixel >> 16) & 0xff) / 255.0
                                        green:((fg->pixel >> 8) & 0xff) / 255.0
                                         blue:(fg->pixel & 0xff) / 255.0
                                        alpha:1.0]];
  [label setBackgroundColor:
             [NSColor colorWithCalibratedRed:((bg->pixel >> 16) & 0xff) / 255.0
                                       green:((bg->pixel >> 8) & 0xff) / 255.0
                                        blue:(bg->pixel & 0xff) / 255.0
                                       alpha:1.0]];
  [window setContentView:label];

  stat_screen->window.my_window = window;

  /* methods of ui_im_status_screen_t */
  stat_screen->destroy = destroy;
  stat_screen->show = show;
  stat_screen->hide = hide;
  stat_screen->set_spot = set_spot;
  stat_screen->set = set;

  /* XXX (see set()) */
  stat_screen->filled_len = 1;

  return stat_screen;
}

#else /* ! USE_IM_PLUGIN */

ui_im_status_screen_t *ui_im_status_screen_new(ui_display_t* disp,
                                               ui_font_manager_t* font_man,
                                               ui_color_manager_t* color_man,
                                               void *vtparser,  int is_vertical,
                                               u_int line_height, int x, int y) {
  return NULL;
}

#endif
