[gnome-panel] menu: add GpUserMenu

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 94dca458a0d2e4c79729433412eb159c8367407b
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sat Feb 17 23:38:05 2018 +0200

    menu: add GpUserMenu

 modules/menu/Makefile.am    |    2 +
 modules/menu/gp-user-menu.c |  381 +++++++++++++++++++++++++++++++++++++++++++
 modules/menu/gp-user-menu.h |   32 ++++
 3 files changed, 415 insertions(+), 0 deletions(-)
---
diff --git a/modules/menu/Makefile.am b/modules/menu/Makefile.am
index 35d51c3..34725da 100644
--- a/modules/menu/Makefile.am
+++ b/modules/menu/Makefile.am
@@ -39,6 +39,8 @@ menu_la_SOURCES = \
        gp-recent-menu.h \
        gp-user-menu-applet.c \
        gp-user-menu-applet.h \
+       gp-user-menu.c \
+       gp-user-menu.h \
        gp-volumes.c \
        gp-volumes.h \
        $(BUILT_SOURCES) \
diff --git a/modules/menu/gp-user-menu.c b/modules/menu/gp-user-menu.c
new file mode 100644
index 0000000..0095a60
--- /dev/null
+++ b/modules/menu/gp-user-menu.c
@@ -0,0 +1,381 @@
+/*
+ * Copyright (C) 2018 Alberts Muktupāvels
+ *
+ * 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 2 of the License, 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+#include "gp-user-menu.h"
+#include "gp-menu-utils.h"
+
+#include <libgnome-panel/gp-image-menu-item.h>
+
+struct _GpUserMenu
+{
+  GtkMenu   parent;
+
+  GpApplet *applet;
+
+  gboolean  empty;
+
+  guint     reload_id;
+
+  gulong    locked_down_id;
+  gulong    menu_icon_size_id;
+};
+
+enum
+{
+  PROP_0,
+
+  PROP_APPLET,
+  PROP_EMPTY,
+
+  LAST_PROP
+};
+
+static GParamSpec *menu_properties[LAST_PROP] = { NULL };
+
+G_DEFINE_TYPE (GpUserMenu, gp_user_menu, GTK_TYPE_MENU)
+
+static void
+activate_cb (GtkWidget       *item,
+             GDesktopAppInfo *info)
+{
+  gp_menu_utils_app_info_launch (info);
+}
+
+static void
+drag_data_get_cb (GtkWidget        *widget,
+                  GdkDragContext   *context,
+                  GtkSelectionData *selection_data,
+                  guint             info,
+                  guint             time,
+                  GDesktopAppInfo  *app_info)
+{
+  const gchar *filename;
+  gchar *uris[2];
+
+  filename = g_desktop_app_info_get_filename (app_info);
+  if (filename == NULL)
+    return;
+
+  uris[0] = g_filename_to_uri (filename, NULL, NULL);
+  uris[1] = NULL;
+
+  gtk_selection_data_set_uris (selection_data, uris);
+  g_free (uris[0]);
+}
+
+static void
+append_control_center (GpUserMenu *menu)
+{
+  GDesktopAppInfo *info;
+  const gchar *name;
+  const gchar *description;
+  GIcon *icon;
+  GtkWidget *item;
+
+  info = g_desktop_app_info_new ("gnome-control-center.desktop");
+  if (info == NULL)
+    return;
+
+  name = g_app_info_get_display_name (G_APP_INFO (info));
+  description = g_app_info_get_description (G_APP_INFO (info));
+  icon = g_app_info_get_icon (G_APP_INFO (info));
+
+  if (description == NULL)
+    description = g_desktop_app_info_get_generic_name (info);
+
+  item = gp_image_menu_item_new_with_label (name);
+  gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
+  gtk_widget_show (item);
+
+  if (icon != NULL)
+    {
+      guint icon_size;
+      GtkWidget *image;
+
+      icon_size = gp_applet_get_menu_icon_size (menu->applet);
+      image = gtk_image_new_from_gicon (icon, GTK_ICON_SIZE_MENU);
+      gtk_image_set_pixel_size (GTK_IMAGE (image), icon_size);
+
+      gp_image_menu_item_set_image (GP_IMAGE_MENU_ITEM (item), image);
+    }
+
+  if (description != NULL)
+    {
+      gtk_widget_set_tooltip_text (item, description);
+
+      g_object_bind_property (menu->applet, "enable-tooltips",
+                              item, "has-tooltip",
+                              G_BINDING_DEFAULT |
+                              G_BINDING_SYNC_CREATE);
+    }
+
+  if (!gp_applet_get_locked_down (menu->applet))
+    {
+      static const GtkTargetEntry drag_targets[] =
+        {
+          { (gchar *) "text/uri-list", 0, 0 }
+        };
+
+      gtk_drag_source_set (item, GDK_BUTTON1_MASK | GDK_BUTTON2_MASK,
+                           drag_targets, G_N_ELEMENTS (drag_targets),
+                           GDK_ACTION_COPY);
+
+      if (icon != NULL)
+        gtk_drag_source_set_icon_gicon (item, icon);
+
+      g_signal_connect_data (item, "drag-data-get",
+                             G_CALLBACK (drag_data_get_cb),
+                             g_object_ref (info),
+                             (GClosureNotify) g_object_unref,
+                             0);
+    }
+
+  g_signal_connect_data (item, "activate",
+                         G_CALLBACK (activate_cb),
+                         g_object_ref (info),
+                         (GClosureNotify) g_object_unref,
+                         0);
+
+  g_object_unref (info);
+}
+
+static void
+remove_item (GtkWidget *widget,
+             gpointer   user_data)
+{
+  gtk_widget_destroy (widget);
+}
+
+static void
+count_visible_item (GtkWidget *widget,
+                    gpointer   user_data)
+{
+  gint *count = user_data;
+
+  if (gtk_widget_is_visible (widget))
+    (*count)++;
+}
+
+static void
+menu_reload (GpUserMenu *menu)
+{
+  gint count;
+  gboolean empty;
+
+  gtk_container_foreach (GTK_CONTAINER (menu), remove_item, NULL);
+
+  append_control_center (menu);
+
+  count = 0;
+  gtk_container_foreach (GTK_CONTAINER (menu), count_visible_item, &count);
+  empty = count == 0;
+
+  if (menu->empty == empty)
+    return;
+
+  menu->empty = empty;
+
+  g_object_notify_by_pspec (G_OBJECT (menu), menu_properties[PROP_EMPTY]);
+}
+
+static gboolean
+reload_cb (gpointer user_data)
+{
+  GpUserMenu *menu;
+
+  menu = GP_USER_MENU (user_data);
+
+  menu_reload (menu);
+  menu->reload_id = 0;
+
+  return G_SOURCE_REMOVE;
+}
+
+static void
+queue_reload (GpUserMenu *menu)
+{
+  if (menu->reload_id != 0)
+    return;
+
+  menu->reload_id = g_timeout_add_full (G_PRIORITY_LOW, 200,
+                                        reload_cb, menu,
+                                        NULL);
+
+  g_source_set_name_by_id (menu->reload_id, "[menu] reload_cb");
+}
+
+static void
+locked_down_cb (GpApplet   *applet,
+                GParamSpec *pspec,
+                GpUserMenu *menu)
+{
+  queue_reload (menu);
+}
+
+static void
+menu_icon_size_cb (GpApplet   *applet,
+                   GParamSpec *pspec,
+                   GpUserMenu *menu)
+{
+  queue_reload (menu);
+}
+
+static void
+gp_user_menu_constructed (GObject *object)
+{
+  GpUserMenu *menu;
+
+  menu = GP_USER_MENU (object);
+
+  G_OBJECT_CLASS (gp_user_menu_parent_class)->constructed (object);
+
+  menu->locked_down_id = g_signal_connect (menu->applet, "notify::locked-down",
+                                           G_CALLBACK (locked_down_cb), menu);
+
+  menu->menu_icon_size_id = g_signal_connect (menu->applet,
+                                              "notify::menu-icon-size",
+                                              G_CALLBACK (menu_icon_size_cb),
+                                              menu);
+
+  queue_reload (menu);
+}
+
+static void
+gp_user_menu_dispose (GObject *object)
+{
+  GpUserMenu *menu;
+
+  menu = GP_USER_MENU (object);
+
+  if (menu->reload_id != 0)
+    {
+      g_source_remove (menu->reload_id);
+      menu->reload_id = 0;
+    }
+
+  if (menu->locked_down_id != 0)
+    {
+      g_signal_handler_disconnect (menu->applet, menu->locked_down_id);
+      menu->locked_down_id = 0;
+    }
+
+  if (menu->menu_icon_size_id != 0)
+    {
+      g_signal_handler_disconnect (menu->applet, menu->menu_icon_size_id);
+      menu->menu_icon_size_id = 0;
+    }
+
+  menu->applet = NULL;
+
+  G_OBJECT_CLASS (gp_user_menu_parent_class)->dispose (object);
+}
+
+static void
+gp_user_menu_get_property (GObject    *object,
+                           guint       property_id,
+                           GValue     *value,
+                           GParamSpec *pspec)
+{
+  GpUserMenu *menu;
+
+  menu = GP_USER_MENU (object);
+
+  switch (property_id)
+    {
+      case PROP_APPLET:
+        g_assert_not_reached ();
+        break;
+
+      case PROP_EMPTY:
+        g_value_set_boolean (value, menu->empty);
+        break;
+
+      default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+        break;
+    }
+}
+
+static void
+gp_user_menu_set_property (GObject      *object,
+                           guint         property_id,
+                           const GValue *value,
+                           GParamSpec   *pspec)
+{
+  GpUserMenu *menu;
+
+  menu = GP_USER_MENU (object);
+
+  switch (property_id)
+    {
+      case PROP_APPLET:
+        g_assert (menu->applet == NULL);
+        menu->applet = g_value_get_object (value);
+        break;
+
+      default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+        break;
+    }
+}
+
+static void
+install_properties (GObjectClass *object_class)
+{
+  menu_properties[PROP_APPLET] =
+    g_param_spec_object ("applet", "Applet", "Applet",
+                         GP_TYPE_APPLET,
+                         G_PARAM_CONSTRUCT_ONLY | G_PARAM_WRITABLE |
+                         G_PARAM_STATIC_STRINGS);
+
+  menu_properties[PROP_EMPTY] =
+    g_param_spec_boolean ("empty", "Empty", "Empty",
+                          TRUE,
+                          G_PARAM_READABLE | G_PARAM_EXPLICIT_NOTIFY |
+                          G_PARAM_STATIC_STRINGS);
+
+  g_object_class_install_properties (object_class, LAST_PROP, menu_properties);
+}
+
+static void
+gp_user_menu_class_init (GpUserMenuClass *menu_class)
+{
+  GObjectClass *object_class;
+
+  object_class = G_OBJECT_CLASS (menu_class);
+
+  object_class->constructed = gp_user_menu_constructed;
+  object_class->dispose = gp_user_menu_dispose;
+  object_class->get_property = gp_user_menu_get_property;
+  object_class->set_property = gp_user_menu_set_property;
+
+  install_properties (object_class);
+}
+
+static void
+gp_user_menu_init (GpUserMenu *menu)
+{
+}
+
+GtkWidget *
+gp_user_menu_new (GpApplet *applet)
+{
+  return g_object_new (GP_TYPE_USER_MENU,
+                       "applet", applet,
+                       NULL);
+}
diff --git a/modules/menu/gp-user-menu.h b/modules/menu/gp-user-menu.h
new file mode 100644
index 0000000..6e6600d
--- /dev/null
+++ b/modules/menu/gp-user-menu.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2018 Alberts Muktupāvels
+ *
+ * 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 2 of the License, 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GP_USER_MENU_H
+#define GP_USER_MENU_H
+
+#include <libgnome-panel/gp-applet.h>
+
+G_BEGIN_DECLS
+
+#define GP_TYPE_USER_MENU (gp_user_menu_get_type ())
+G_DECLARE_FINAL_TYPE (GpUserMenu, gp_user_menu, GP, USER_MENU, GtkMenu)
+
+GtkWidget *gp_user_menu_new (GpApplet *applet);
+
+G_END_DECLS
+
+#endif