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diff --git a/src/haikumenu.c b/src/haikumenu.c
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+++ b/src/haikumenu.c
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+/* Haiku window system support
+ Copyright (C) 2021-2022 Free Software Foundation, Inc.
+
+This file is part of GNU Emacs.
+
+GNU Emacs is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or (at
+your option) any later version.
+
+GNU Emacs is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
+
+#include <config.h>
+
+#include "lisp.h"
+#include "frame.h"
+#include "keyboard.h"
+#include "menu.h"
+#include "buffer.h"
+#include "blockinput.h"
+
+#include "haikuterm.h"
+#include "haiku_support.h"
+
+static Lisp_Object *volatile menu_item_selection;
+static struct timespec menu_timer_timespec;
+
+int popup_activated_p = 0;
+
+static void
+digest_menu_items (void *first_menu, int start, int menu_items_used,
+ bool is_menu_bar)
+{
+ void **menus, **panes;
+ ssize_t menu_len;
+ ssize_t pane_len;
+ int i, menu_depth;
+ void *menu, *window, *view;
+ Lisp_Object pane_name, prefix;
+ const char *pane_string;
+ Lisp_Object item_name, enable, descrip, def, selected, help;
+
+ USE_SAFE_ALLOCA;
+
+ menu_len = (menu_items_used + 1 - start) * sizeof *menus;
+ pane_len = (menu_items_used + 1 - start) * sizeof *panes;
+ menu = first_menu;
+
+ i = start;
+ menu_depth = 0;
+
+ menus = SAFE_ALLOCA (menu_len);
+ panes = SAFE_ALLOCA (pane_len);
+ memset (menus, 0, menu_len);
+ memset (panes, 0, pane_len);
+ menus[0] = first_menu;
+
+ window = NULL;
+ view = NULL;
+
+ if (FRAMEP (Vmenu_updating_frame) &&
+ FRAME_LIVE_P (XFRAME (Vmenu_updating_frame)) &&
+ FRAME_HAIKU_P (XFRAME (Vmenu_updating_frame)))
+ {
+ window = FRAME_HAIKU_WINDOW (XFRAME (Vmenu_updating_frame));
+ view = FRAME_HAIKU_VIEW (XFRAME (Vmenu_updating_frame));
+ }
+
+ if (view)
+ BView_draw_lock (view, false, 0, 0, 0, 0);
+
+ while (i < menu_items_used)
+ {
+ if (NILP (AREF (menu_items, i)))
+ {
+ menus[++menu_depth] = menu;
+ i++;
+ }
+ else if (EQ (AREF (menu_items, i), Qlambda))
+ {
+ panes[menu_depth] = NULL;
+ menu = panes[--menu_depth] ? panes[menu_depth] : menus[menu_depth];
+ i++;
+ }
+ else if (EQ (AREF (menu_items, i), Qquote))
+ i += 1;
+ else if (EQ (AREF (menu_items, i), Qt))
+ {
+ if (menu_items_n_panes == 1)
+ {
+ i += MENU_ITEMS_PANE_LENGTH;
+ continue;
+ }
+
+ pane_name = AREF (menu_items, i + MENU_ITEMS_PANE_NAME);
+ prefix = AREF (menu_items, i + MENU_ITEMS_PANE_PREFIX);
+
+ if (STRINGP (pane_name) && STRING_MULTIBYTE (pane_name))
+ {
+ pane_name = ENCODE_UTF_8 (pane_name);
+ ASET (menu_items, i + MENU_ITEMS_PANE_NAME, pane_name);
+ }
+
+ pane_string = (NILP (pane_name)
+ ? "" : SSDATA (pane_name));
+ if (!NILP (prefix))
+ pane_string++;
+
+ if (strcmp (pane_string, ""))
+ {
+ panes[menu_depth] =
+ menu = BMenu_new_submenu (menus[menu_depth], pane_string, 1);
+ }
+
+ i += MENU_ITEMS_PANE_LENGTH;
+ }
+ else
+ {
+ item_name = AREF (menu_items, i + MENU_ITEMS_ITEM_NAME);
+ enable = AREF (menu_items, i + MENU_ITEMS_ITEM_ENABLE);
+ descrip = AREF (menu_items, i + MENU_ITEMS_ITEM_EQUIV_KEY);
+ def = AREF (menu_items, i + MENU_ITEMS_ITEM_DEFINITION);
+ selected = AREF (menu_items, i + MENU_ITEMS_ITEM_SELECTED);
+ help = AREF (menu_items, i + MENU_ITEMS_ITEM_HELP);
+
+ if (STRINGP (item_name) && STRING_MULTIBYTE (item_name))
+ {
+ item_name = ENCODE_UTF_8 (item_name);
+ ASET (menu_items, i + MENU_ITEMS_ITEM_NAME, item_name);
+ }
+
+ if (STRINGP (descrip) && STRING_MULTIBYTE (descrip))
+ {
+ descrip = ENCODE_UTF_8 (descrip);
+ ASET (menu_items, i + MENU_ITEMS_ITEM_EQUIV_KEY, descrip);
+ }
+
+ if (STRINGP (help) && STRING_MULTIBYTE (help))
+ help = ENCODE_UTF_8 (help);
+
+ if (i + MENU_ITEMS_ITEM_LENGTH < menu_items_used &&
+ NILP (AREF (menu_items, i + MENU_ITEMS_ITEM_LENGTH)))
+ menu = BMenu_new_submenu (menu, SSDATA (item_name), !NILP (enable));
+ else if (NILP (def) && menu_separator_name_p (SSDATA (item_name)))
+ BMenu_add_separator (menu);
+ else if (!is_menu_bar)
+ {
+ if (!use_system_tooltips || NILP (Fsymbol_value (Qtooltip_mode)))
+ BMenu_add_item (menu, SSDATA (item_name),
+ !NILP (def) ? aref_addr (menu_items, i) : NULL,
+ !NILP (enable), !NILP (selected), 0, window,
+ !NILP (descrip) ? SSDATA (descrip) : NULL,
+ NULL);
+ else
+ BMenu_add_item (menu, SSDATA (item_name),
+ !NILP (def) ? aref_addr (menu_items, i) : NULL,
+ !NILP (enable), !NILP (selected), 0, window,
+ !NILP (descrip) ? SSDATA (descrip) : NULL,
+ STRINGP (help) ? SSDATA (help) : NULL);
+ }
+ else if (!use_system_tooltips || NILP (Fsymbol_value (Qtooltip_mode)))
+ BMenu_add_item (menu, SSDATA (item_name),
+ !NILP (def) ? (void *) (intptr_t) i : NULL,
+ !NILP (enable), !NILP (selected), 1, window,
+ !NILP (descrip) ? SSDATA (descrip) : NULL,
+ NULL);
+ else
+ BMenu_add_item (menu, SSDATA (item_name),
+ !NILP (def) ? (void *) (intptr_t) i : NULL,
+ !NILP (enable), !NILP (selected), 1, window,
+ !NILP (descrip) ? SSDATA (descrip) : NULL,
+ STRINGP (help) ? SSDATA (help) : NULL);
+
+ i += MENU_ITEMS_ITEM_LENGTH;
+ }
+ }
+
+ if (view)
+ BView_draw_unlock (view);
+
+ SAFE_FREE ();
+}
+
+static Lisp_Object
+haiku_dialog_show (struct frame *f, Lisp_Object title,
+ Lisp_Object header, const char **error_name)
+{
+ int i, nb_buttons = 0;
+ bool boundary_seen = false;
+ Lisp_Object pane_name, vals[10];
+ void *alert, *button;
+ bool enabled_item_seen_p = false;
+ int32 val;
+
+ *error_name = NULL;
+
+ if (menu_items_n_panes > 1)
+ {
+ *error_name = "Multiple panes in dialog box";
+ return Qnil;
+ }
+
+ pane_name = AREF (menu_items, MENU_ITEMS_PANE_NAME);
+ i = MENU_ITEMS_PANE_LENGTH;
+
+ if (STRING_MULTIBYTE (pane_name))
+ pane_name = ENCODE_UTF_8 (pane_name);
+
+ block_input ();
+ alert = BAlert_new (SSDATA (pane_name), NILP (header) ? HAIKU_INFO_ALERT :
+ HAIKU_IDEA_ALERT);
+
+ while (i < menu_items_used)
+ {
+ Lisp_Object item_name, enable, descrip, value;
+ item_name = AREF (menu_items, i + MENU_ITEMS_ITEM_NAME);
+ enable = AREF (menu_items, i + MENU_ITEMS_ITEM_ENABLE);
+ descrip = AREF (menu_items, i + MENU_ITEMS_ITEM_EQUIV_KEY);
+ value = AREF (menu_items, i + MENU_ITEMS_ITEM_VALUE);
+
+ if (NILP (item_name))
+ {
+ BAlert_delete (alert);
+ *error_name = "Submenu in dialog items";
+ unblock_input ();
+ return Qnil;
+ }
+
+ if (EQ (item_name, Qquote))
+ {
+ if (nb_buttons)
+ boundary_seen = true;
+
+ i++;
+ continue;
+ }
+
+ if (nb_buttons >= 9)
+ {
+ BAlert_delete (alert);
+ *error_name = "Too many dialog items";
+ unblock_input ();
+ return Qnil;
+ }
+
+ if (STRING_MULTIBYTE (item_name))
+ item_name = ENCODE_UTF_8 (item_name);
+ if (!NILP (descrip) && STRING_MULTIBYTE (descrip))
+ descrip = ENCODE_UTF_8 (descrip);
+
+ button = BAlert_add_button (alert, SSDATA (item_name));
+
+ BButton_set_enabled (button, !NILP (enable));
+ enabled_item_seen_p |= !NILP (enable);
+
+ if (!NILP (descrip))
+ BView_set_tooltip (button, SSDATA (descrip));
+
+ vals[nb_buttons] = value;
+ ++nb_buttons;
+ i += MENU_ITEMS_ITEM_LENGTH;
+ }
+
+ /* Haiku only lets us specify a single button to place on the
+ left. */
+ if (boundary_seen)
+ BAlert_set_offset_spacing (alert);
+
+ /* If there isn't a single enabled item, add an "Ok" button so the
+ popup can be dismissed. */
+ if (!enabled_item_seen_p)
+ BAlert_add_button (alert, "Ok");
+ unblock_input ();
+
+ unrequest_sigio ();
+ ++popup_activated_p;
+ val = BAlert_go (alert, block_input, unblock_input,
+ process_pending_signals);
+ --popup_activated_p;
+ request_sigio ();
+
+ if (val < 0)
+ quit ();
+ else if (val < nb_buttons)
+ return vals[val];
+
+ /* The dialog was dismissed via the button appended to dismiss popup
+ dialogs without a single enabled item. */
+ if (nb_buttons)
+ quit ();
+ /* Otherwise, the Ok button was added because no buttons were seen
+ at all. */
+ else
+ return Qt;
+
+ emacs_abort ();
+}
+
+Lisp_Object
+haiku_popup_dialog (struct frame *f, Lisp_Object header, Lisp_Object contents)
+{
+ Lisp_Object title;
+ const char *error_name = NULL;
+ Lisp_Object selection;
+ specpdl_ref specpdl_count = SPECPDL_INDEX ();
+
+ check_window_system (f);
+
+ /* Decode the dialog items from what was specified. */
+ title = Fcar (contents);
+ CHECK_STRING (title);
+ record_unwind_protect_void (unuse_menu_items);
+
+ if (NILP (Fcar (Fcdr (contents))))
+ /* No buttons specified, add an "Ok" button so users can pop down
+ the dialog. Also, the lesstif/motif version crashes if there are
+ no buttons. */
+ contents = list2 (title, Fcons (build_string ("Ok"), Qt));
+
+ list_of_panes (list1 (contents));
+
+ /* Display them in a dialog box. */
+ selection = haiku_dialog_show (f, title, header, &error_name);
+
+ unbind_to (specpdl_count, Qnil);
+ discard_menu_items ();
+
+ if (error_name)
+ error ("%s", error_name);
+ return selection;
+}
+
+static void
+haiku_menu_show_help (void *help, void *data)
+{
+ Lisp_Object *id = (Lisp_Object *) help;
+
+ if (help)
+ show_help_echo (id[MENU_ITEMS_ITEM_HELP],
+ Qnil, Qnil, Qnil);
+ else
+ show_help_echo (Qnil, Qnil, Qnil, Qnil);
+}
+
+static Lisp_Object
+haiku_process_pending_signals_for_menu_1 (void *ptr)
+{
+ menu_timer_timespec = timer_check ();
+
+ return Qnil;
+}
+
+static Lisp_Object
+haiku_process_pending_signals_for_menu_2 (enum nonlocal_exit exit, Lisp_Object error)
+{
+ menu_timer_timespec.tv_sec = 0;
+ menu_timer_timespec.tv_nsec = -1;
+
+ return Qnil;
+}
+
+static struct timespec
+haiku_process_pending_signals_for_menu (void)
+{
+ process_pending_signals ();
+
+ /* The original idea was to let timers throw so that timeouts can
+ work correctly, but there's no way to pop down a BPopupMenu
+ that's currently popped up. */
+ internal_catch_all (haiku_process_pending_signals_for_menu_1, NULL,
+ haiku_process_pending_signals_for_menu_2);
+
+ return menu_timer_timespec;
+}
+
+Lisp_Object
+haiku_menu_show (struct frame *f, int x, int y, int menuflags,
+ Lisp_Object title, const char **error_name)
+{
+ int i, submenu_depth, j;
+ void *view, *menu;
+ Lisp_Object *subprefix_stack;
+ Lisp_Object prefix, entry;
+
+ USE_SAFE_ALLOCA;
+
+ view = FRAME_HAIKU_VIEW (f);
+ i = 0;
+ submenu_depth = 0;
+ subprefix_stack
+ = SAFE_ALLOCA (menu_items_used * sizeof (Lisp_Object));
+
+ eassert (FRAME_HAIKU_P (f));
+
+ *error_name = NULL;
+
+ if (menu_items_used <= MENU_ITEMS_PANE_LENGTH)
+ {
+ *error_name = "Empty menu";
+
+ SAFE_FREE ();
+ return Qnil;
+ }
+
+ block_input ();
+ if (STRINGP (title) && STRING_MULTIBYTE (title))
+ title = ENCODE_UTF_8 (title);
+
+ menu = BPopUpMenu_new (STRINGP (title) ? SSDATA (title) : NULL);
+ if (STRINGP (title))
+ {
+ BMenu_add_title (menu, SSDATA (title));
+ BMenu_add_separator (menu);
+ }
+ digest_menu_items (menu, 0, menu_items_used, 0);
+ BView_convert_to_screen (view, &x, &y);
+ unblock_input ();
+
+ unrequest_sigio ();
+ popup_activated_p++;
+ menu_item_selection = BMenu_run (menu, x, y, haiku_menu_show_help,
+ block_input, unblock_input,
+ haiku_process_pending_signals_for_menu, NULL);
+ popup_activated_p--;
+ request_sigio ();
+
+ FRAME_DISPLAY_INFO (f)->grabbed = 0;
+
+ /* Clear the grab view manually. There is a race condition here if
+ the window thread receives a button press between here and the
+ end of BMenu_run. */
+ be_clear_grab_view ();
+
+ if (menu_item_selection)
+ {
+ prefix = entry = Qnil;
+ i = 0;
+ while (i < menu_items_used)
+ {
+ if (NILP (AREF (menu_items, i)))
+ {
+ subprefix_stack[submenu_depth++] = prefix;
+ prefix = entry;
+ i++;
+ }
+ else if (EQ (AREF (menu_items, i), Qlambda))
+ {
+ prefix = subprefix_stack[--submenu_depth];
+ i++;
+ }
+ else if (EQ (AREF (menu_items, i), Qt))
+ {
+ prefix
+ = AREF (menu_items, i + MENU_ITEMS_PANE_PREFIX);
+ i += MENU_ITEMS_PANE_LENGTH;
+ }
+ /* Ignore a nil in the item list.
+ It's meaningful only for dialog boxes. */
+ else if (EQ (AREF (menu_items, i), Qquote))
+ i += 1;
+ else
+ {
+ entry
+ = AREF (menu_items, i + MENU_ITEMS_ITEM_VALUE);
+ if (menu_item_selection == aref_addr (menu_items, i))
+ {
+ if (menuflags & MENU_KEYMAPS)
+ {
+ entry = list1 (entry);
+ if (!NILP (prefix))
+ entry = Fcons (prefix, entry);
+ for (j = submenu_depth - 1; j >= 0; j--)
+ if (!NILP (subprefix_stack[j]))
+ entry = Fcons (subprefix_stack[j], entry);
+ }
+ block_input ();
+ BPopUpMenu_delete (menu);
+ unblock_input ();
+
+ SAFE_FREE ();
+ return entry;
+ }
+ i += MENU_ITEMS_ITEM_LENGTH;
+ }
+ }
+ }
+ else if (!(menuflags & MENU_FOR_CLICK))
+ {
+ block_input ();
+ BPopUpMenu_delete (menu);
+ unblock_input ();
+ quit ();
+ }
+ block_input ();
+ BPopUpMenu_delete (menu);
+ unblock_input ();
+
+ SAFE_FREE ();
+ return Qnil;
+}
+
+void
+free_frame_menubar (struct frame *f)
+{
+ void *mbar;
+
+ FRAME_MENU_BAR_LINES (f) = 0;
+ FRAME_MENU_BAR_HEIGHT (f) = 0;
+ FRAME_EXTERNAL_MENU_BAR (f) = 0;
+
+ block_input ();
+ mbar = FRAME_HAIKU_MENU_BAR (f);
+ FRAME_HAIKU_MENU_BAR (f) = NULL;
+
+ if (mbar)
+ BMenuBar_delete (mbar);
+
+ if (FRAME_OUTPUT_DATA (f)->menu_bar_open_p)
+ --popup_activated_p;
+ FRAME_OUTPUT_DATA (f)->menu_bar_open_p = 0;
+ unblock_input ();
+
+ adjust_frame_size (f, -1, -1, 2, false, Qmenu_bar_lines);
+}
+
+void
+initialize_frame_menubar (struct frame *f)
+{
+ /* This function is called before the first chance to redisplay
+ the frame. It has to be, so the frame will have the right size. */
+ fset_menu_bar_items (f, menu_bar_items (FRAME_MENU_BAR_ITEMS (f)));
+ set_frame_menubar (f, true);
+}
+
+void
+set_frame_menubar (struct frame *f, bool deep_p)
+{
+ void *mbar = FRAME_HAIKU_MENU_BAR (f);
+ void *view = FRAME_HAIKU_VIEW (f);
+ bool first_time_p = false;
+
+ if (!mbar)
+ {
+ block_input ();
+ mbar = FRAME_HAIKU_MENU_BAR (f) = BMenuBar_new (view);
+ first_time_p = 1;
+
+ /* Now wait for the MENU_BAR_RESIZE event informing us of the
+ initial dimensions of that menu bar. */
+ if (FRAME_VISIBLE_P (f))
+ haiku_wait_for_event (f, MENU_BAR_RESIZE);
+
+ unblock_input ();
+ }
+
+ Lisp_Object items;
+ struct buffer *prev = current_buffer;
+ Lisp_Object buffer;
+ specpdl_ref specpdl_count = SPECPDL_INDEX ();
+ int previous_menu_items_used = f->menu_bar_items_used;
+ Lisp_Object *previous_items
+ = alloca (previous_menu_items_used * sizeof *previous_items);
+ int count;
+ ptrdiff_t subitems, i;
+ int *submenu_start, *submenu_end, *submenu_n_panes;
+ Lisp_Object *submenu_names;
+
+ XSETFRAME (Vmenu_updating_frame, f);
+
+ if (!deep_p)
+ {
+ items = FRAME_MENU_BAR_ITEMS (f);
+ Lisp_Object string;
+
+ block_input ();
+ int count = BMenu_count_items (mbar);
+
+ int i;
+ for (i = 0; i < ASIZE (items); i += 4)
+ {
+ string = AREF (items, i + 1);
+
+ if (!STRINGP (string))
+ break;
+
+ if (STRING_MULTIBYTE (string))
+ string = ENCODE_UTF_8 (string);
+
+ if (i / 4 < count)
+ {
+ void *it = BMenu_item_at (mbar, i / 4);
+ BMenu_item_set_label (it, SSDATA (string));
+ }
+ else
+ BMenu_new_menu_bar_submenu (mbar, SSDATA (string));
+ }
+
+ if (i / 4 < count)
+ BMenu_delete_from (mbar, i / 4, count - i / 4 + 1);
+ unblock_input ();
+
+ f->menu_bar_items_used = 0;
+ }
+ else
+ {
+ /* If we are making a new widget, its contents are empty,
+ do always reinitialize them. */
+ if (first_time_p)
+ previous_menu_items_used = 0;
+
+ buffer = XWINDOW (FRAME_SELECTED_WINDOW (f))->contents;
+ specbind (Qinhibit_quit, Qt);
+ /* Don't let the debugger step into this code
+ because it is not reentrant. */
+ specbind (Qdebug_on_next_call, Qnil);
+
+ record_unwind_save_match_data ();
+ if (NILP (Voverriding_local_map_menu_flag))
+ {
+ specbind (Qoverriding_terminal_local_map, Qnil);
+ specbind (Qoverriding_local_map, Qnil);
+ }
+
+ set_buffer_internal_1 (XBUFFER (buffer));
+
+ /* Run the Lucid hook. */
+ safe_run_hooks (Qactivate_menubar_hook);
+
+ /* If it has changed current-menubar from previous value,
+ really recompute the menubar from the value. */
+ safe_run_hooks (Qmenu_bar_update_hook);
+ fset_menu_bar_items (f, menu_bar_items (FRAME_MENU_BAR_ITEMS (f)));
+
+ items = FRAME_MENU_BAR_ITEMS (f);
+
+ /* Save the frame's previous menu bar contents data. */
+ if (previous_menu_items_used)
+ memcpy (previous_items, xvector_contents (f->menu_bar_vector),
+ previous_menu_items_used * word_size);
+
+ /* Fill in menu_items with the current menu bar contents.
+ This can evaluate Lisp code. */
+ save_menu_items ();
+
+ menu_items = f->menu_bar_vector;
+ menu_items_allocated = VECTORP (menu_items) ? ASIZE (menu_items) : 0;
+ subitems = ASIZE (items) / 4;
+ submenu_start = alloca ((subitems + 1) * sizeof *submenu_start);
+ submenu_end = alloca (subitems * sizeof *submenu_end);
+ submenu_n_panes = alloca (subitems * sizeof *submenu_n_panes);
+ submenu_names = alloca (subitems * sizeof (Lisp_Object));
+
+ init_menu_items ();
+ for (i = 0; i < subitems; i++)
+ {
+ Lisp_Object key, string, maps;
+
+ key = AREF (items, 4 * i);
+ string = AREF (items, 4 * i + 1);
+ maps = AREF (items, 4 * i + 2);
+ if (NILP (string))
+ break;
+
+ if (STRINGP (string) && STRING_MULTIBYTE (string))
+ string = ENCODE_UTF_8 (string);
+
+ submenu_start[i] = menu_items_used;
+
+ menu_items_n_panes = 0;
+ parse_single_submenu (key, string, maps);
+ submenu_n_panes[i] = menu_items_n_panes;
+
+ submenu_end[i] = menu_items_used;
+ submenu_names[i] = string;
+ }
+
+ submenu_start[i] = -1;
+ finish_menu_items ();
+
+ set_buffer_internal_1 (prev);
+
+ /* If there has been no change in the Lisp-level contents
+ of the menu bar, skip redisplaying it. Just exit. */
+
+ /* Compare the new menu items with the ones computed last time. */
+ for (i = 0; i < previous_menu_items_used; i++)
+ if (menu_items_used == i
+ || (!EQ (previous_items[i], AREF (menu_items, i))))
+ break;
+ if (i == menu_items_used && i == previous_menu_items_used && i != 0)
+ {
+ /* The menu items have not changed. Don't bother updating
+ the menus in any form, since it would be a no-op. */
+ discard_menu_items ();
+ unbind_to (specpdl_count, Qnil);
+ return;
+ }
+
+ /* Convert menu_items into widget_value trees
+ to display the menu. This cannot evaluate Lisp code. */
+
+ block_input ();
+ count = BMenu_count_items (mbar);
+ for (i = 0; submenu_start[i] >= 0; ++i)
+ {
+ void *mn = NULL;
+ if (i < count)
+ mn = BMenu_item_get_menu (BMenu_item_at (mbar, i));
+ if (mn)
+ BMenu_delete_all (mn);
+ else
+ mn = BMenu_new_menu_bar_submenu (mbar, SSDATA (submenu_names[i]));
+
+ menu_items_n_panes = submenu_n_panes[i];
+ digest_menu_items (mn, submenu_start[i], submenu_end[i], 1);
+ }
+ unblock_input ();
+
+ /* The menu items are different, so store them in the frame. */
+ fset_menu_bar_vector (f, menu_items);
+ f->menu_bar_items_used = menu_items_used;
+ }
+
+ /* This undoes save_menu_items. */
+ unbind_to (specpdl_count, Qnil);
+}
+
+void
+run_menu_bar_help_event (struct frame *f, int mb_idx)
+{
+ Lisp_Object frame, vec, help;
+
+ XSETFRAME (frame, f);
+
+ block_input ();
+ if (mb_idx < 0)
+ {
+ kbd_buffer_store_help_event (frame, Qnil);
+ unblock_input ();
+ return;
+ }
+
+ vec = f->menu_bar_vector;
+ if ((mb_idx + MENU_ITEMS_ITEM_HELP) >= ASIZE (vec))
+ return;
+
+ help = AREF (vec, mb_idx + MENU_ITEMS_ITEM_HELP);
+ if (STRINGP (help) || NILP (help))
+ kbd_buffer_store_help_event (frame, help);
+ unblock_input ();
+}
+
+DEFUN ("menu-or-popup-active-p", Fmenu_or_popup_active_p, Smenu_or_popup_active_p,
+ 0, 0, 0, doc: /* SKIP: real doc in xmenu.c. */)
+ (void)
+{
+ return popup_activated_p ? Qt : Qnil;
+}
+
+DEFUN ("haiku-menu-bar-open", Fhaiku_menu_bar_open, Shaiku_menu_bar_open, 0, 1, "i",
+ doc: /* Show and start key navigation of the menu bar in FRAME.
+This initially opens the first menu bar item and you can then navigate
+with the arrow keys, select a menu entry with the return key, or
+cancel with the escape key. If FRAME is nil or not given, use the
+selected frame. If FRAME has no menu bar, a pop-up is displayed at
+the position of the last non-menu event instead. */)
+ (Lisp_Object frame)
+{
+ struct frame *f = decode_window_system_frame (frame);
+ int rc;
+
+ if (FRAME_EXTERNAL_MENU_BAR (f))
+ {
+ block_input ();
+ set_frame_menubar (f, 1);
+ rc = BMenuBar_start_tracking (FRAME_HAIKU_MENU_BAR (f));
+ unblock_input ();
+
+ if (!rc)
+ return Qnil;
+
+ FRAME_OUTPUT_DATA (f)->menu_bar_open_p = 1;
+ popup_activated_p += 1;
+ }
+ else
+ return call2 (Qpopup_menu, call0 (Qmouse_menu_bar_map),
+ last_nonmenu_event);
+
+ return Qnil;
+}
+
+void
+haiku_activate_menubar (struct frame *f)
+{
+ int rc;
+
+ if (!FRAME_HAIKU_MENU_BAR (f))
+ return;
+
+ set_frame_menubar (f, true);
+
+ if (FRAME_OUTPUT_DATA (f)->saved_menu_event)
+ {
+ block_input ();
+ rc = be_replay_menu_bar_event (FRAME_HAIKU_MENU_BAR (f),
+ FRAME_OUTPUT_DATA (f)->saved_menu_event);
+ xfree (FRAME_OUTPUT_DATA (f)->saved_menu_event);
+ FRAME_OUTPUT_DATA (f)->saved_menu_event = NULL;
+ unblock_input ();
+
+ if (!rc)
+ return;
+
+ FRAME_OUTPUT_DATA (f)->menu_bar_open_p = 1;
+ popup_activated_p += 1;
+ }
+ else
+ {
+ block_input ();
+ rc = BMenuBar_start_tracking (FRAME_HAIKU_MENU_BAR (f));
+ unblock_input ();
+
+ if (!rc)
+ return;
+
+ FRAME_OUTPUT_DATA (f)->menu_bar_open_p = 1;
+ popup_activated_p += 1;
+ }
+}
+
+void
+syms_of_haikumenu (void)
+{
+ DEFSYM (Qdebug_on_next_call, "debug-on-next-call");
+ DEFSYM (Qpopup_menu, "popup-menu");
+ DEFSYM (Qmouse_menu_bar_map, "mouse-menu-bar-map");
+ DEFSYM (Qtooltip_mode, "tooltip-mode");
+
+ defsubr (&Smenu_or_popup_active_p);
+ defsubr (&Shaiku_menu_bar_open);
+ return;
+}