+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */

+/*

+ * Copyright © 2003 David Bordoley

+ * Copyright © 2003-2004 Christian Persch

+ *

+ * This program 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, or (at your option)

+ * any later version.

+ *

+ * This program 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 this program; if not, write to the Free Software

+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

+ */

+

+#include <config.h>

+

+#include <string.h>

+#include <stdlib.h>

+

+#include <gtk/gtk.h>

+

+#include "terminal-tabs-menu.h"

+#include "terminal-screen.h"

+#include "terminal-screen-container.h"

+#include "terminal-intl.h"

+

+#define TERMINAL_ACCELS_N_TABS_SWITCH (12)

+

+#define LABEL_WIDTH_CHARS 32

+#define ACTION_VERB_FORMAT_PREFIX "JmpTab"

+#define ACTION_VERB_FORMAT_PREFIX_LEN strlen (ACTION_VERB_FORMAT_PREFIX)

+#define ACTION_VERB_FORMAT ACTION_VERB_FORMAT_PREFIX "%x"

+#define ACTION_VERB_FORMAT_LENGTH strlen (ACTION_VERB_FORMAT) + 14 + 1

+#define ACTION_VERB_FORMAT_BASE (16) /* %x is hex */

+#define ACCEL_PATH_FORMAT "<Actions>/Main/TabsSwitch%u"

+#define ACCEL_PATH_FORMAT_LENGTH strlen (ACCEL_PATH_FORMAT) + 14 + 1

+#define DATA_KEY "TerminalTabsMenu::Action"

+

+#define UI_PATH "/menubar/Tabs"

+

+#define TERMINAL_TABS_MENU_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), TERMINAL_TYPE_TABS_MENU, TerminalTabsMenuPrivate))

+

+struct _TerminalTabsMenuPrivate

+{

+ TerminalWindow *window;

+ GtkActionGroup *action_group;

+ GtkAction *anchor_action;

+ guint ui_id;

+};

+

+enum

+{

+ PROP_0,

+ PROP_WINDOW

+};

+

+static void terminal_tabs_menu_update (TerminalTabsMenu *menu);

+

+/* FIXME: this can be severely optimised */

+static GByteArray *tabs_id_array = NULL;

+static guint n_tabs = 0;

+

+G_DEFINE_TYPE (TerminalTabsMenu, terminal_tabs_menu, G_TYPE_OBJECT)

+

+/* We need to assign unique IDs to tabs, otherwise accels get confused in the

+ * tabs menu (bug #339548). We could use a serial #, but the ID is used in the

+ * action name which is stored in a GQuark and so we should allocate them

+ * efficiently.

+ */

+static guint

+allocate_tab_id (void)

+{

+ int bit;

+ guint b, len;

+ guint8 *data;

+ guint8 byte, mask;

+

+ if (n_tabs++ == 0)

+ {

+ g_assert (tabs_id_array == NULL);

+ tabs_id_array = g_byte_array_sized_new (16);

+ }

+

+ /* Find a free ID */

+ len = tabs_id_array->len;

+ data = tabs_id_array->data;

+ for (b = 0; b < len; ++b)

+ {

+ if (data[b] != 0xff)

+ break;

+ }

+

+ /* Need to append a new byte */

+ if (b == len)

+ {

+ guint8 bytes[] = { 0 };

+ g_byte_array_append (tabs_id_array, bytes, G_N_ELEMENTS (bytes));

+ g_assert (tabs_id_array->len > b);

+ }

+

+ data = tabs_id_array->data + b;

+ byte = 0xff ^ *data;

+ /* Now find the first free bit */

+ bit = g_bit_nth_lsf (byte, -1);

+ mask = 1 << bit;

+ g_assert (bit >= 0 && bit <= 7);

+ g_assert ((*data & mask) == 0);

+ /* And mark it as allocated */

+ *data |= mask;

+

+ return b * 8 + bit;

+}

+

+static void

+free_tab_id (GtkAction *action)

+{

+ const char *name;

+ guint id;

+ guint8 *data;

+ guint b, bit;

+

+ name = gtk_action_get_name (action);

+ id = g_ascii_strtoull (name + ACTION_VERB_FORMAT_PREFIX_LEN, NULL,

+ ACTION_VERB_FORMAT_BASE);

+ g_assert (id < tabs_id_array->len * 8);

+

+ b = id >> 3;

+ bit = id & 0x7;

+ data = tabs_id_array->data + b;

+ *data &= ~(1 << bit);

+

+ g_assert (n_tabs > 0);

+ if (--n_tabs == 0)

+ {

+ g_assert (tabs_id_array != NULL);

+ g_byte_array_free (tabs_id_array, TRUE);

+ tabs_id_array = NULL;

+ }

+}

+

+static void

+tab_action_activate_cb (GtkToggleAction *action,

+ TerminalTabsMenu *menu)

+{

+ TerminalTabsMenuPrivate *priv = menu->priv;

+ TerminalScreen *screen;

+

+ if (gtk_toggle_action_get_active (action) == FALSE)

+ {

+ return;

+ }

+

+ screen = g_object_get_data (G_OBJECT (action), DATA_KEY);

+ g_return_if_fail (screen != NULL);

+

+ if (terminal_window_get_active (priv->window) != screen)

+ {

+ terminal_window_switch_screen (priv->window, screen);

+ }

+}

+

+static void

+sync_tab_title (TerminalScreen *screen,

+ GParamSpec *pspec,

+ GtkAction *action)

+{

+ const char *title;

+

+ title = terminal_screen_get_title (screen);

+

+ g_object_set (action, "label", title, NULL);

+}

+

+static void

+notebook_page_added_cb (GtkNotebook *notebook,

+ TerminalScreenContainer *container,

+ guint position,

+ TerminalTabsMenu *menu)

+{

+ TerminalTabsMenuPrivate *priv = menu->priv;

+ GtkAction *action;

+ char verb[ACTION_VERB_FORMAT_LENGTH];

+ GSList *group;

+ TerminalScreen *screen;

+

+ screen = terminal_screen_container_get_screen (container);

+

+ g_snprintf (verb, sizeof (verb), ACTION_VERB_FORMAT, allocate_tab_id ());

+

+ action = g_object_new (GTK_TYPE_RADIO_ACTION,

+ "name", verb,

+ "tooltip", _("Switch to this tab"),

+ NULL);

+

+ sync_tab_title (screen, NULL, action);

+ /* make sure the action is alive when handling the signal, see bug #169833 */

+ g_signal_connect_object (screen, "notify::title",

+ G_CALLBACK (sync_tab_title), action, 0);

+

+ gtk_action_group_add_action_with_accel (priv->action_group, action, NULL);

+

+ group = gtk_radio_action_get_group (GTK_RADIO_ACTION (priv->anchor_action));

+ gtk_radio_action_set_group (GTK_RADIO_ACTION (action), group);

+

+ /* set this here too, since tab-added comes after notify::active-child */

+ if (terminal_window_get_active (priv->window) == screen)

+ {

+ gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (action), TRUE);

+ }

+

+ g_object_set_data (G_OBJECT (screen), DATA_KEY, action);

+ g_object_set_data (G_OBJECT (action), DATA_KEY, screen);

+

+ g_signal_connect (action, "activate",

+ G_CALLBACK (tab_action_activate_cb), menu);

+

+ g_object_unref (action);

+

+ terminal_tabs_menu_update (menu);

+}

+

+static void

+notebook_page_removed_cb (GtkNotebook *notebook,

+ TerminalScreenContainer *container,

+ guint position,

+ TerminalTabsMenu *menu)

+{

+ TerminalTabsMenuPrivate *priv = menu->priv;

+ GtkAction *action;

+ TerminalScreen *screen;

+

+ screen = terminal_screen_container_get_screen (container);

+

+ action = g_object_get_data (G_OBJECT (screen), DATA_KEY);

+ g_return_if_fail (action != NULL);

+

+ free_tab_id (action);

+

+ g_signal_handlers_disconnect_by_func

+ (screen, G_CALLBACK (sync_tab_title), action);

+

+ g_signal_handlers_disconnect_by_func

+ (action, G_CALLBACK (tab_action_activate_cb), menu);

+

+ g_object_set_data (G_OBJECT (screen), DATA_KEY, NULL);

+ gtk_action_group_remove_action (priv->action_group, action);

+

+ terminal_tabs_menu_update (menu);

+}

+

+static void

+notebook_page_reordered_cb (GtkNotebook *notebook,

+ GtkBin *bin,

+ guint position,

+ TerminalTabsMenu *menu)

+{

+ terminal_tabs_menu_update (menu);

+}

+

+static void

+notebook_page_switch_cb (GtkNotebook *notebook,

+#if GTK_CHECK_VERSION (2, 90, 6)

+ GtkWidget *page,

+#else

+ gpointer page,

+#endif

+ guint position,

+ TerminalTabsMenu *menu)

+{

+ TerminalScreenContainer *container;

+ TerminalScreen *screen;

+ GtkAction *action;

+

+#if GTK_CHECK_VERSION (2, 90, 6)

+ container = TERMINAL_SCREEN_CONTAINER (page);

+#else

+ container = TERMINAL_SCREEN_CONTAINER (gtk_notebook_get_nth_page (notebook, position));

+#endif

+ screen = terminal_screen_container_get_screen (container);

+

+ action = g_object_get_data (G_OBJECT (screen), DATA_KEY);

+ g_signal_handlers_block_by_func (action, G_CALLBACK (tab_action_activate_cb), menu);

+ gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (action), TRUE);

+ g_signal_handlers_unblock_by_func (action, G_CALLBACK (tab_action_activate_cb), menu);

+}

+

+static void

+connect_proxy_cb (GtkActionGroup *action_group,

+ GtkAction *action,

+ GtkWidget *proxy,

+ gpointer dummy)

+{

+ if (GTK_IS_MENU_ITEM (proxy))

+ {

+ GtkLabel *label;

+

+ label = GTK_LABEL (gtk_bin_get_child (GTK_BIN (proxy)));

+

+ gtk_label_set_use_underline (label, FALSE);

+ gtk_label_set_ellipsize (label, PANGO_ELLIPSIZE_END);

+ gtk_label_set_max_width_chars (label, LABEL_WIDTH_CHARS);

+ }

+}

+

+static void

+terminal_tabs_menu_set_window (TerminalTabsMenu *menu,

+ TerminalWindow *window)

+{

+ TerminalTabsMenuPrivate *priv = menu->priv;

+ GtkWidget *notebook;

+ GtkUIManager *manager;

+

+ priv->window = window;

+

+ manager = GTK_UI_MANAGER (terminal_window_get_ui_manager (window));

+ priv->action_group = gtk_action_group_new ("TabsActions");

+ gtk_ui_manager_insert_action_group (manager, priv->action_group, -1);

+ g_object_unref (priv->action_group);

+

+ priv->anchor_action = g_object_new (GTK_TYPE_RADIO_ACTION,

+ "name", "TabsMenuAnchorAction",

+ NULL);

+ gtk_action_group_add_action (priv->action_group, priv->anchor_action);

+ g_object_unref (priv->anchor_action);

+

+ g_signal_connect (priv->action_group, "connect-proxy",

+ G_CALLBACK (connect_proxy_cb), NULL);

+

+ notebook = terminal_window_get_notebook (window);

+ g_signal_connect_object (notebook, "page-added",

+ G_CALLBACK (notebook_page_added_cb), menu, 0);

+ g_signal_connect_object (notebook, "page-removed",

+ G_CALLBACK (notebook_page_removed_cb), menu, 0);

+ g_signal_connect_object (notebook, "page-reordered",

+ G_CALLBACK (notebook_page_reordered_cb), menu, 0);

+ g_signal_connect_object (notebook, "switch-page",

+ G_CALLBACK (notebook_page_switch_cb), menu, 0);

+}

+

+static void

+terminal_tabs_menu_set_property (GObject *object,

+ guint prop_id,

+ const GValue *value,

+ GParamSpec *pspec)

+{

+ TerminalTabsMenu *menu = TERMINAL_TABS_MENU (object);

+

+ switch (prop_id)

+ {

+ case PROP_WINDOW:

+ terminal_tabs_menu_set_window (menu, g_value_get_object (value));

+ break;

+ default:

+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);

+ break;

+ }

+}

+

+static void

+terminal_tabs_menu_get_property (GObject *object,

+ guint prop_id,

+ GValue *value,

+ GParamSpec *pspec)

+{

+ /* no readable properties */

+ g_return_if_reached ();

+}

+

+static void

+terminal_tabs_menu_class_init (TerminalTabsMenuClass *klass)

+{

+ GObjectClass *object_class = G_OBJECT_CLASS (klass);

+

+ object_class->set_property = terminal_tabs_menu_set_property;

+ object_class->get_property = terminal_tabs_menu_get_property;

+

+ g_object_class_install_property (object_class,

+ PROP_WINDOW,

+ g_param_spec_object ("window", NULL, NULL,

+ TERMINAL_TYPE_WINDOW,

+ G_PARAM_WRITABLE | G_PARAM_STATIC_NAME | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB |

+ G_PARAM_CONSTRUCT_ONLY));

+

+ g_type_class_add_private (object_class, sizeof (TerminalTabsMenuPrivate));

+

+ /* We don't want to save accels, so skip them */

+ gtk_accel_map_add_filter ("<Actions>/Main/TabsSwitch*");

+}

+

+static void

+terminal_tabs_menu_init (TerminalTabsMenu *menu)

+{

+ menu->priv = TERMINAL_TABS_MENU_GET_PRIVATE (menu);

+}

+

+static void

+terminal_tabs_menu_clean (TerminalTabsMenu *menu)

+{

+ TerminalTabsMenuPrivate *p = menu->priv;

+ GtkUIManager *manager = GTK_UI_MANAGER (terminal_window_get_ui_manager (p->window));

+

+ if (p->ui_id != 0)

+ {

+ gtk_ui_manager_remove_ui (manager, p->ui_id);

+ gtk_ui_manager_ensure_update (manager);

+ p->ui_id = 0;

+ }

+}

+

+TerminalTabsMenu *

+terminal_tabs_menu_new (TerminalWindow *window)

+{

+ return TERMINAL_TABS_MENU (g_object_new (TERMINAL_TYPE_TABS_MENU,

+ "window", window,

+ NULL));

+}

+

+static void

+tab_set_action_accelerator (GtkActionGroup *action_group,

+ GtkAction *action,

+ guint tab_number,

+ gboolean is_single_tab)

+{

+ if (!is_single_tab &&

+ tab_number < TERMINAL_ACCELS_N_TABS_SWITCH)

+ {

+ char accel_path[ACCEL_PATH_FORMAT_LENGTH];

+

+ g_snprintf (accel_path, sizeof (accel_path), ACCEL_PATH_FORMAT, tab_number + 1);

+ gtk_action_set_accel_path (action, accel_path);

+ }

+ else

+ {

+ gtk_action_set_accel_path (action, NULL);

+ return;

+ }

+}

+

+static void

+terminal_tabs_menu_update (TerminalTabsMenu *menu)

+{

+ TerminalTabsMenuPrivate *p = menu->priv;

+ GtkUIManager *manager;

+ GtkAction *action;

+ GList *tabs = NULL, *l;

+ guint i = 0, n;

+ gboolean is_single_tab;

+ const char *verb;

+

+ terminal_tabs_menu_clean (menu);

+

+ tabs = terminal_window_list_screen_containers (p->window);

+

+ n = g_list_length (tabs);

+ if (n == 0) return;

+

+ is_single_tab = (n == 1);

+

+ manager = GTK_UI_MANAGER (terminal_window_get_ui_manager (p->window));

+ p->ui_id = gtk_ui_manager_new_merge_id (manager);

+

+ for (l = tabs; l != NULL; l = l->next)

+ {

+ TerminalScreenContainer *container = TERMINAL_SCREEN_CONTAINER (l->data);

+ GObject *screen = G_OBJECT (terminal_screen_container_get_screen (container));

+

+ action = g_object_get_data (screen, DATA_KEY);

+ g_return_if_fail (action != NULL);

+

+ verb = gtk_action_get_name (action);

+

+ tab_set_action_accelerator (p->action_group, action, i++, is_single_tab);

+

+ gtk_ui_manager_add_ui (manager, p->ui_id,

+ UI_PATH,

+ verb, verb,

+ GTK_UI_MANAGER_MENUITEM, FALSE);

+ }

+

+ g_list_free (tabs);

+}