Adding upstream version 43.2.upstream/43.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1216 insertions, 0 deletions

diff --git a/src/nautilus-pathbar.c b/src/nautilus-pathbar.c
new file mode 100644
index 0000000..0c880f3
--- /dev/null
+++ b/src/nautilus-pathbar.c
@@ -0,0 +1,1216 @@
+/* nautilus-pathbar.c
+ * Copyright (C) 2004  Red Hat, Inc.,  Jonathan Blandford <jrb@gnome.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#include <config.h>
+#include <string.h>
+#include <gtk/gtk.h>
+#include <glib/gi18n.h>
+#include <gio/gio.h>
+
+#include "nautilus-pathbar.h"
+#include "nautilus-properties-window.h"
+
+#include "nautilus-enums.h"
+#include "nautilus-enum-types.h"
+#include "nautilus-file.h"
+#include "nautilus-file-utilities.h"
+#include "nautilus-global-preferences.h"
+#include "nautilus-icon-names.h"
+#include "nautilus-trash-monitor.h"
+#include "nautilus-ui-utilities.h"
+
+#include "nautilus-window-slot-dnd.h"
+
+enum
+{
+    OPEN_LOCATION,
+    LAST_SIGNAL
+};
+
+typedef enum
+{
+    NORMAL_BUTTON,
+    OTHER_LOCATIONS_BUTTON,
+    ROOT_BUTTON,
+    ADMIN_ROOT_BUTTON,
+    HOME_BUTTON,
+    STARRED_BUTTON,
+    RECENT_BUTTON,
+    MOUNT_BUTTON,
+    TRASH_BUTTON,
+} ButtonType;
+
+#define BUTTON_DATA(x) ((ButtonData *) (x))
+
+static guint path_bar_signals[LAST_SIGNAL] = { 0 };
+
+#define NAUTILUS_PATH_BAR_BUTTON_ELLISPIZE_MINIMUM_CHARS 7
+
+typedef struct
+{
+    GtkWidget *button;
+    ButtonType type;
+    char *dir_name;
+    GFile *path;
+    NautilusFile *file;
+    unsigned int file_changed_signal_id;
+
+    GtkWidget *image;
+    GtkWidget *label;
+    GtkWidget *separator;
+    GtkWidget *container;
+
+    NautilusPathBar *path_bar;
+
+    guint ignore_changes : 1;
+    guint is_root : 1;
+} ButtonData;
+
+struct _NautilusPathBar
+{
+    GtkBox parent_instance;
+
+    GtkWidget *scrolled;
+    GtkWidget *buttons_box;
+
+    GFile *current_path;
+    gpointer current_button_data;
+
+    GList *button_list;
+
+    GActionGroup *action_group;
+
+    NautilusFile *context_menu_file;
+    GtkPopoverMenu *current_view_menu_popover;
+    GtkWidget *current_view_menu_button;
+    GtkWidget *button_menu_popover;
+    GMenu *current_view_menu;
+    GMenu *extensions_section;
+    GMenu *templates_submenu;
+    GMenu *button_menu;
+
+    gchar *os_name;
+};
+
+G_DEFINE_TYPE (NautilusPathBar, nautilus_path_bar, GTK_TYPE_BOX);
+
+static void nautilus_path_bar_update_button_state (ButtonData *button_data,
+                                                   gboolean    current_dir);
+static void nautilus_path_bar_update_path (NautilusPathBar *self,
+                                           GFile           *file_path);
+
+static void     unschedule_pop_up_context_menu (NautilusPathBar *self);
+static void     action_pathbar_open_item_new_window (GSimpleAction *action,
+                                                     GVariant      *state,
+                                                     gpointer       user_data);
+static void     action_pathbar_open_item_new_tab (GSimpleAction *action,
+                                                  GVariant      *state,
+                                                  gpointer       user_data);
+static void     action_pathbar_properties (GSimpleAction *action,
+                                           GVariant      *state,
+                                           gpointer       user_data);
+static void     pop_up_pathbar_context_menu (NautilusPathBar *self,
+                                             NautilusFile    *file);
+static void nautilus_path_bar_clear_buttons (NautilusPathBar *self);
+
+const GActionEntry path_bar_actions[] =
+{
+    { "open-item-new-tab", action_pathbar_open_item_new_tab },
+    { "open-item-new-window", action_pathbar_open_item_new_window },
+    { "properties", action_pathbar_properties}
+};
+
+
+static void
+action_pathbar_open_item_new_tab (GSimpleAction *action,
+                                  GVariant      *state,
+                                  gpointer       user_data)
+{
+    NautilusPathBar *self;
+    GFile *location;
+
+    self = NAUTILUS_PATH_BAR (user_data);
+
+    if (self->context_menu_file == NULL)
+    {
+        return;
+    }
+
+    location = nautilus_file_get_location (self->context_menu_file);
+
+    if (location)
+    {
+        g_signal_emit (user_data, path_bar_signals[OPEN_LOCATION], 0, location,
+                       NAUTILUS_OPEN_FLAG_NEW_TAB | NAUTILUS_OPEN_FLAG_DONT_MAKE_ACTIVE);
+        g_object_unref (location);
+    }
+}
+
+static void
+action_pathbar_open_item_new_window (GSimpleAction *action,
+                                     GVariant      *state,
+                                     gpointer       user_data)
+{
+    NautilusPathBar *self;
+    GFile *location;
+
+    self = NAUTILUS_PATH_BAR (user_data);
+
+    if (self->context_menu_file == NULL)
+    {
+        return;
+    }
+
+    location = nautilus_file_get_location (self->context_menu_file);
+
+    if (location)
+    {
+        g_signal_emit (user_data, path_bar_signals[OPEN_LOCATION], 0, location, NAUTILUS_OPEN_FLAG_NEW_WINDOW);
+        g_object_unref (location);
+    }
+}
+
+static void
+action_pathbar_properties (GSimpleAction *action,
+                           GVariant      *state,
+                           gpointer       user_data)
+{
+    NautilusPathBar *self;
+    GList *files;
+
+    self = NAUTILUS_PATH_BAR (user_data);
+
+    g_return_if_fail (NAUTILUS_IS_FILE (self->context_menu_file));
+
+    files = g_list_append (NULL, nautilus_file_ref (self->context_menu_file));
+
+    nautilus_properties_window_present (files, GTK_WIDGET (self), NULL, NULL,
+                                        NULL);
+
+    nautilus_file_list_free (files);
+}
+
+static void
+on_adjustment_changed (GtkAdjustment   *adjustment,
+                       NautilusPathBar *self)
+{
+    /* Automatically scroll to the end, to reveal the current folder. */
+    g_autoptr (AdwAnimation) anim = NULL;
+    anim = adw_timed_animation_new (GTK_WIDGET (self),
+                                    gtk_adjustment_get_value (adjustment),
+                                    gtk_adjustment_get_upper (adjustment),
+                                    800,
+                                    adw_property_animation_target_new (G_OBJECT (adjustment), "value"));
+    adw_timed_animation_set_easing (ADW_TIMED_ANIMATION (anim), ADW_EASE_OUT_CUBIC);
+    adw_animation_play (anim);
+}
+
+static void
+on_page_size_changed (GtkAdjustment *adjustment)
+{
+    /* When window is resized, immediately set new value, otherwise we would get
+     * an underflow gradient for an moment. */
+    gtk_adjustment_set_value (adjustment, gtk_adjustment_get_upper (adjustment));
+}
+
+static gboolean
+bind_current_view_menu_model_to_popover (NautilusPathBar *self)
+{
+    gtk_popover_menu_set_menu_model (self->current_view_menu_popover,
+                                     G_MENU_MODEL (self->current_view_menu));
+    return G_SOURCE_REMOVE;
+}
+
+static void
+nautilus_path_bar_init (NautilusPathBar *self)
+{
+    GtkAdjustment *adjustment;
+    GtkBuilder *builder;
+    g_autoptr (GError) error = NULL;
+
+    self->os_name = g_get_os_info (G_OS_INFO_KEY_NAME);
+
+    self->scrolled = gtk_scrolled_window_new ();
+    /* Scroll horizontally only and don't use internal scrollbar. */
+    gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (self->scrolled),
+                                    /* hscrollbar-policy */ GTK_POLICY_EXTERNAL,
+                                    /* vscrollbar-policy */ GTK_POLICY_NEVER);
+    gtk_widget_set_hexpand (self->scrolled, TRUE);
+    gtk_box_append (GTK_BOX (self), self->scrolled);
+
+    adjustment = gtk_scrolled_window_get_hadjustment (GTK_SCROLLED_WINDOW (self->scrolled));
+    g_signal_connect (adjustment, "changed", G_CALLBACK (on_adjustment_changed), self);
+    g_signal_connect (adjustment, "notify::page-size", G_CALLBACK (on_page_size_changed), self);
+
+    self->buttons_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
+    gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (self->scrolled), self->buttons_box);
+
+    self->current_view_menu_button = gtk_menu_button_new ();
+    gtk_widget_add_css_class (self->current_view_menu_button, "flat");
+    gtk_menu_button_set_child (GTK_MENU_BUTTON (self->current_view_menu_button),
+                               gtk_image_new_from_icon_name ("view-more-symbolic"));
+    gtk_box_append (GTK_BOX (self), self->current_view_menu_button);
+
+    gtk_widget_set_tooltip_text (self->current_view_menu_button, _("Current Folder Menu"));
+
+    builder = gtk_builder_new ();
+
+    /* Add context menu for pathbar buttons */
+    gtk_builder_add_from_resource (builder,
+                                   "/org/gnome/nautilus/ui/nautilus-pathbar-context-menu.ui",
+                                   &error);
+    if (error != NULL)
+    {
+        g_error ("Failed to add pathbar-context-menu.ui: %s", error->message);
+    }
+    self->button_menu = g_object_ref_sink (G_MENU (gtk_builder_get_object (builder, "button-menu")));
+    self->button_menu_popover = gtk_popover_menu_new_from_model (G_MENU_MODEL (self->button_menu));
+    gtk_widget_set_parent (self->button_menu_popover, GTK_WIDGET (self));
+    gtk_popover_set_has_arrow (GTK_POPOVER (self->button_menu_popover), FALSE);
+    gtk_widget_set_halign (self->button_menu_popover, GTK_ALIGN_START);
+
+    /* Add current location menu, which shares features with the view's background context menu */
+    self->current_view_menu = g_object_ref_sink (G_MENU (gtk_builder_get_object (builder, "current-view-menu")));
+    self->extensions_section = g_object_ref (G_MENU (gtk_builder_get_object (builder, "background-extensions-section")));
+    self->templates_submenu = g_object_ref (G_MENU (gtk_builder_get_object (builder, "templates-submenu")));
+    self->current_view_menu_popover = g_object_ref_sink (GTK_POPOVER_MENU (gtk_popover_menu_new_from_model (NULL)));
+
+    g_object_unref (builder);
+
+    gtk_menu_button_set_popover (GTK_MENU_BUTTON (self->current_view_menu_button),
+                                 GTK_WIDGET (self->current_view_menu_popover));
+    bind_current_view_menu_model_to_popover (self);
+
+    gtk_widget_set_name (GTK_WIDGET (self), "NautilusPathBar");
+    gtk_widget_add_css_class (GTK_WIDGET (self), "linked");
+
+    /* Action group */
+    self->action_group = G_ACTION_GROUP (g_simple_action_group_new ());
+    g_action_map_add_action_entries (G_ACTION_MAP (self->action_group),
+                                     path_bar_actions,
+                                     G_N_ELEMENTS (path_bar_actions),
+                                     self);
+    gtk_widget_insert_action_group (GTK_WIDGET (self),
+                                    "pathbar",
+                                    G_ACTION_GROUP (self->action_group));
+}
+
+static void
+nautilus_path_bar_finalize (GObject *object)
+{
+    NautilusPathBar *self;
+
+    self = NAUTILUS_PATH_BAR (object);
+
+    g_clear_object (&self->current_view_menu);
+    g_clear_object (&self->extensions_section);
+    g_clear_object (&self->templates_submenu);
+    g_clear_object (&self->button_menu);
+    g_clear_object (&self->current_view_menu_popover);
+    g_free (self->os_name);
+
+    unschedule_pop_up_context_menu (NAUTILUS_PATH_BAR (object));
+
+    G_OBJECT_CLASS (nautilus_path_bar_parent_class)->finalize (object);
+}
+
+static void
+nautilus_path_bar_dispose (GObject *object)
+{
+    NautilusPathBar *self = NAUTILUS_PATH_BAR (object);
+
+    nautilus_path_bar_clear_buttons (self);
+
+    G_OBJECT_CLASS (nautilus_path_bar_parent_class)->dispose (object);
+}
+
+static const char *
+get_dir_name (ButtonData *button_data)
+{
+    switch (button_data->type)
+    {
+        case ROOT_BUTTON:
+        {
+            if (button_data->path_bar != NULL &&
+                button_data->path_bar->os_name != NULL)
+            {
+                return button_data->path_bar->os_name;
+            }
+            /* Translators: This is the label used in the pathbar when seeing
+             * the root directory (also known as /) */
+            return _("Operating System");
+        }
+
+        case ADMIN_ROOT_BUTTON:
+        {
+            /* Translators: This is the filesystem root directory (also known
+             * as /) when seen as administrator */
+            return _("Administrator Root");
+        }
+
+        case HOME_BUTTON:
+        {
+            return _("Home");
+        }
+
+        case OTHER_LOCATIONS_BUTTON:
+        {
+            return _("Other Locations");
+        }
+
+        case STARRED_BUTTON:
+        {
+            return _("Starred");
+        }
+
+        default:
+        {
+            return button_data->dir_name;
+        }
+    }
+}
+
+static void
+button_data_free (ButtonData *button_data)
+{
+    g_object_unref (button_data->path);
+    g_free (button_data->dir_name);
+    if (button_data->file != NULL)
+    {
+        g_signal_handler_disconnect (button_data->file,
+                                     button_data->file_changed_signal_id);
+        nautilus_file_monitor_remove (button_data->file, button_data);
+        nautilus_file_unref (button_data->file);
+    }
+
+    g_free (button_data);
+}
+
+static void
+nautilus_path_bar_class_init (NautilusPathBarClass *path_bar_class)
+{
+    GObjectClass *gobject_class;
+
+    gobject_class = (GObjectClass *) path_bar_class;
+
+    gobject_class->finalize = nautilus_path_bar_finalize;
+    gobject_class->dispose = nautilus_path_bar_dispose;
+
+    path_bar_signals [OPEN_LOCATION] =
+        g_signal_new ("open-location",
+                      G_OBJECT_CLASS_TYPE (path_bar_class),
+                      G_SIGNAL_RUN_FIRST | G_SIGNAL_RUN_LAST,
+                      0,
+                      NULL, NULL, NULL,
+                      G_TYPE_NONE, 2,
+                      G_TYPE_FILE,
+                      NAUTILUS_TYPE_OPEN_FLAGS);
+}
+
+void
+nautilus_path_bar_set_extensions_background_menu (NautilusPathBar *self,
+                                                  GMenuModel      *menu)
+{
+    g_return_if_fail (NAUTILUS_IS_PATH_BAR (self));
+
+    nautilus_gmenu_set_from_model (self->extensions_section, menu);
+}
+
+void
+nautilus_path_bar_set_templates_menu (NautilusPathBar *self,
+                                      GMenuModel      *menu)
+{
+    gint i;
+
+    g_return_if_fail (NAUTILUS_IS_PATH_BAR (self));
+
+    if (!gtk_widget_is_visible (GTK_WIDGET (self->current_view_menu_popover)))
+    {
+        /* Workaround to avoid leaking duplicated GtkStack pages each time the
+         * templates menu is set. Unbinding the model is the only way to clear
+         * all children. After that's done, on idle, we rebind it.
+         * See https://gitlab.gnome.org/GNOME/nautilus/-/issues/1705 */
+        gtk_popover_menu_set_menu_model (self->current_view_menu_popover, NULL);
+    }
+
+    nautilus_gmenu_set_from_model (self->templates_submenu, menu);
+    g_idle_add ((GSourceFunc) bind_current_view_menu_model_to_popover, self);
+
+    i = nautilus_g_menu_model_find_by_string (G_MENU_MODEL (self->current_view_menu),
+                                              "nautilus-menu-item",
+                                              "templates-submenu");
+    nautilus_g_menu_replace_string_in_item (self->current_view_menu, i,
+                                            "hidden-when",
+                                            (menu == NULL) ? "action-missing" : NULL);
+}
+
+/* Public functions and their helpers */
+static void
+nautilus_path_bar_clear_buttons (NautilusPathBar *self)
+{
+    while (self->button_list != NULL)
+    {
+        ButtonData *button_data;
+
+        button_data = BUTTON_DATA (self->button_list->data);
+
+        gtk_box_remove (GTK_BOX (self->buttons_box), button_data->container);
+
+        self->button_list = g_list_remove (self->button_list, button_data);
+        button_data_free (button_data);
+    }
+}
+
+void
+nautilus_path_bar_show_current_location_menu (NautilusPathBar *self)
+{
+    g_return_if_fail (NAUTILUS_IS_PATH_BAR (self));
+
+    gtk_menu_button_popup (GTK_MENU_BUTTON (self->current_view_menu_button));
+}
+
+static void
+button_clicked_cb (GtkButton *button,
+                   gpointer   data)
+{
+    ButtonData *button_data;
+    NautilusPathBar *self;
+
+    button_data = BUTTON_DATA (data);
+    if (button_data->ignore_changes)
+    {
+        return;
+    }
+
+    self = button_data->path_bar;
+
+    if (g_file_equal (button_data->path, self->current_path))
+    {
+        return;
+    }
+    else
+    {
+        g_signal_emit (self, path_bar_signals[OPEN_LOCATION], 0,
+                       button_data->path,
+                       0);
+    }
+}
+
+static void
+real_pop_up_pathbar_context_menu (NautilusPathBar *self)
+{
+    gtk_popover_popup (GTK_POPOVER (self->button_menu_popover));
+}
+
+static void
+pathbar_popup_file_attributes_ready (NautilusFile *file,
+                                     gpointer      data)
+{
+    NautilusPathBar *self;
+
+    g_return_if_fail (NAUTILUS_IS_PATH_BAR (data));
+
+    self = NAUTILUS_PATH_BAR (data);
+
+    g_return_if_fail (file == self->context_menu_file);
+
+    real_pop_up_pathbar_context_menu (self);
+}
+
+static void
+unschedule_pop_up_context_menu (NautilusPathBar *self)
+{
+    if (self->context_menu_file != NULL)
+    {
+        g_return_if_fail (NAUTILUS_IS_FILE (self->context_menu_file));
+        nautilus_file_cancel_call_when_ready (self->context_menu_file,
+                                              pathbar_popup_file_attributes_ready,
+                                              self);
+        g_clear_pointer (&self->context_menu_file, nautilus_file_unref);
+    }
+}
+
+static void
+schedule_pop_up_context_menu (NautilusPathBar *self,
+                              NautilusFile    *file)
+{
+    g_return_if_fail (NAUTILUS_IS_FILE (file));
+
+    if (file == self->context_menu_file)
+    {
+        if (nautilus_file_check_if_ready (file,
+                                          NAUTILUS_FILE_ATTRIBUTE_INFO |
+                                          NAUTILUS_FILE_ATTRIBUTE_MOUNT |
+                                          NAUTILUS_FILE_ATTRIBUTE_FILESYSTEM_INFO))
+        {
+            real_pop_up_pathbar_context_menu (self);
+        }
+    }
+    else
+    {
+        unschedule_pop_up_context_menu (self);
+
+        self->context_menu_file = nautilus_file_ref (file);
+        nautilus_file_call_when_ready (self->context_menu_file,
+                                       NAUTILUS_FILE_ATTRIBUTE_INFO |
+                                       NAUTILUS_FILE_ATTRIBUTE_MOUNT |
+                                       NAUTILUS_FILE_ATTRIBUTE_FILESYSTEM_INFO,
+                                       pathbar_popup_file_attributes_ready,
+                                       self);
+    }
+}
+
+static void
+pop_up_pathbar_context_menu (NautilusPathBar *self,
+                             NautilusFile    *file)
+{
+    if (file != NULL)
+    {
+        schedule_pop_up_context_menu (self, file);
+    }
+}
+
+
+static void
+on_click_gesture_pressed (GtkGestureClick *gesture,
+                          gint             n_press,
+                          gdouble          x,
+                          gdouble          y,
+                          gpointer         user_data)
+{
+    ButtonData *button_data;
+    NautilusPathBar *self;
+    guint current_button;
+    GdkModifierType state;
+    double x_in_pathbar, y_in_pathbar;
+
+    if (n_press != 1)
+    {
+        return;
+    }
+
+    button_data = BUTTON_DATA (user_data);
+    self = button_data->path_bar;
+    current_button = gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture));
+    state = gtk_event_controller_get_current_event_state (GTK_EVENT_CONTROLLER (gesture));
+
+    gtk_widget_translate_coordinates (GTK_WIDGET (button_data->button),
+                                      GTK_WIDGET (self),
+                                      x, y,
+                                      &x_in_pathbar, &y_in_pathbar);
+
+    switch (current_button)
+    {
+        case GDK_BUTTON_MIDDLE:
+        {
+            if ((state & gtk_accelerator_get_default_mod_mask ()) == 0)
+            {
+                g_signal_emit (self, path_bar_signals[OPEN_LOCATION], 0,
+                               button_data->path,
+                               NAUTILUS_OPEN_FLAG_NEW_TAB | NAUTILUS_OPEN_FLAG_DONT_MAKE_ACTIVE);
+            }
+        }
+        break;
+
+        case GDK_BUTTON_SECONDARY:
+        {
+            if (g_file_equal (button_data->path, self->current_path))
+            {
+                break;
+            }
+            else
+            {
+                gtk_popover_set_pointing_to (GTK_POPOVER (self->button_menu_popover),
+                                             &(GdkRectangle){x_in_pathbar, y_in_pathbar, 0, 0});
+                pop_up_pathbar_context_menu (self, button_data->file);
+            }
+        }
+        break;
+
+        case GDK_BUTTON_PRIMARY:
+        {
+            if ((state & GDK_CONTROL_MASK) != 0)
+            {
+                g_signal_emit (button_data->path_bar, path_bar_signals[OPEN_LOCATION], 0,
+                               button_data->path,
+                               NAUTILUS_OPEN_FLAG_NEW_WINDOW);
+            }
+            else
+            {
+                /* GtkButton will claim the primary button presses and emit the
+                 * "clicked" signal. Handle it in the singal callback, not here.
+                 */
+                return;
+            }
+        }
+        break;
+
+        default:
+        {
+            /* Ignore other buttons in this gesture. */
+            return;
+        }
+        break;
+    }
+
+    /* Both middle- and secondary-clicking the title bar can have interesting
+     * effects (minimizing the window, popping up a window manager menu, etc.),
+     * and this avoids all that.
+     */
+    gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
+}
+
+static GIcon *
+get_gicon_for_mount (ButtonData *button_data)
+{
+    GIcon *icon;
+    GMount *mount;
+
+    icon = NULL;
+    mount = nautilus_get_mounted_mount_for_root (button_data->path);
+
+    if (mount != NULL)
+    {
+        icon = g_mount_get_symbolic_icon (mount);
+        g_object_unref (mount);
+    }
+
+    return icon;
+}
+
+static GIcon *
+get_gicon (ButtonData *button_data)
+{
+    switch (button_data->type)
+    {
+        case ROOT_BUTTON:
+        case ADMIN_ROOT_BUTTON:
+        {
+            return g_themed_icon_new (NAUTILUS_ICON_FILESYSTEM);
+        }
+
+        case HOME_BUTTON:
+        {
+            return g_themed_icon_new (NAUTILUS_ICON_HOME);
+        }
+
+        case MOUNT_BUTTON:
+        {
+            return get_gicon_for_mount (button_data);
+        }
+
+        case STARRED_BUTTON:
+        {
+            return g_themed_icon_new ("starred-symbolic");
+        }
+
+        case RECENT_BUTTON:
+        {
+            return g_themed_icon_new ("document-open-recent-symbolic");
+        }
+
+        case OTHER_LOCATIONS_BUTTON:
+        {
+            return g_themed_icon_new ("list-add-symbolic");
+        }
+
+        case TRASH_BUTTON:
+        {
+            return nautilus_trash_monitor_get_symbolic_icon ();
+        }
+
+        default:
+        {
+            return NULL;
+        }
+    }
+
+    return NULL;
+}
+
+static void
+nautilus_path_bar_update_button_appearance (ButtonData *button_data,
+                                            gboolean    current_dir)
+{
+    const gchar *dir_name = get_dir_name (button_data);
+    gint min_chars = NAUTILUS_PATH_BAR_BUTTON_ELLISPIZE_MINIMUM_CHARS;
+    GIcon *icon;
+
+    if (button_data->label != NULL)
+    {
+        gtk_label_set_text (GTK_LABEL (button_data->label), dir_name);
+
+        gtk_widget_set_tooltip_text (button_data->button, dir_name);
+
+        if (current_dir)
+        {
+            /* We want to avoid ellipsizing the current directory name, but
+             * still need to set a limit. */
+            min_chars = 4 * min_chars;
+        }
+
+        /* Labels can ellipsize until they become a single ellipsis character.
+         * We don't want that, so we must set a minimum.
+         *
+         * However, for labels shorter than the minimum, setting this minimum
+         * width would make them unnecessarily wide. In that case, just make it
+         * not ellipsize instead.
+         *
+         * Due to variable width fonts, labels can be shorter than the space
+         * that would be reserved by setting a minimum amount of characters.
+         * Compensate for this with a tolerance of +50% characters.
+         */
+        if (g_utf8_strlen (dir_name, -1) > min_chars * 1.5)
+        {
+            gtk_label_set_width_chars (GTK_LABEL (button_data->label), min_chars);
+            gtk_label_set_ellipsize (GTK_LABEL (button_data->label), PANGO_ELLIPSIZE_MIDDLE);
+        }
+        else
+        {
+            gtk_label_set_width_chars (GTK_LABEL (button_data->label), -1);
+            gtk_label_set_ellipsize (GTK_LABEL (button_data->label), PANGO_ELLIPSIZE_NONE);
+        }
+    }
+
+    icon = get_gicon (button_data);
+    if (icon != NULL)
+    {
+        gtk_image_set_from_gicon (GTK_IMAGE (button_data->image), icon);
+        gtk_widget_show (GTK_WIDGET (button_data->image));
+        g_object_unref (icon);
+    }
+    else
+    {
+        gtk_widget_hide (GTK_WIDGET (button_data->image));
+    }
+}
+
+static void
+nautilus_path_bar_update_button_state (ButtonData *button_data,
+                                       gboolean    current_dir)
+{
+    if (button_data->label != NULL)
+    {
+        gtk_label_set_label (GTK_LABEL (button_data->label), NULL);
+    }
+
+    nautilus_path_bar_update_button_appearance (button_data, current_dir);
+}
+
+static void
+setup_button_type (ButtonData      *button_data,
+                   NautilusPathBar *self,
+                   GFile           *location)
+{
+    g_autoptr (GMount) mount = NULL;
+    g_autofree gchar *uri = NULL;
+
+    if (nautilus_is_root_directory (location))
+    {
+        button_data->type = ROOT_BUTTON;
+    }
+    else if (nautilus_is_home_directory (location))
+    {
+        button_data->type = HOME_BUTTON;
+        button_data->is_root = TRUE;
+    }
+    else if (nautilus_is_recent_directory (location))
+    {
+        button_data->type = RECENT_BUTTON;
+        button_data->is_root = TRUE;
+    }
+    else if (nautilus_is_starred_directory (location))
+    {
+        button_data->type = STARRED_BUTTON;
+        button_data->is_root = TRUE;
+    }
+    else if ((mount = nautilus_get_mounted_mount_for_root (location)) != NULL)
+    {
+        button_data->dir_name = g_mount_get_name (mount);
+        button_data->type = MOUNT_BUTTON;
+        button_data->is_root = TRUE;
+    }
+    else if (nautilus_is_other_locations_directory (location))
+    {
+        button_data->type = OTHER_LOCATIONS_BUTTON;
+        button_data->is_root = TRUE;
+    }
+    else if (strcmp ((uri = g_file_get_uri (location)), "admin:///") == 0)
+    {
+        button_data->type = ADMIN_ROOT_BUTTON;
+        button_data->is_root = TRUE;
+    }
+    else if (strcmp (uri, "trash:///") == 0)
+    {
+        button_data->type = TRASH_BUTTON;
+        button_data->is_root = TRUE;
+    }
+    else
+    {
+        button_data->type = NORMAL_BUTTON;
+    }
+}
+
+static void
+button_data_file_changed (NautilusFile *file,
+                          ButtonData   *button_data)
+{
+    GtkWidget *ancestor;
+    GFile *location;
+    GFile *current_location;
+    GFile *parent;
+    GFile *button_parent;
+    ButtonData *current_button_data;
+    char *display_name;
+    NautilusPathBar *self;
+    gboolean renamed;
+    gboolean child;
+    gboolean current_dir;
+
+    ancestor = gtk_widget_get_ancestor (button_data->button, NAUTILUS_TYPE_PATH_BAR);
+    if (ancestor == NULL)
+    {
+        return;
+    }
+    self = NAUTILUS_PATH_BAR (ancestor);
+
+    g_return_if_fail (self->current_path != NULL);
+    g_return_if_fail (self->current_button_data != NULL);
+
+    current_button_data = self->current_button_data;
+
+    location = nautilus_file_get_location (file);
+    if (!g_file_equal (button_data->path, location))
+    {
+        parent = g_file_get_parent (location);
+        button_parent = g_file_get_parent (button_data->path);
+
+        renamed = (parent != NULL && button_parent != NULL) &&
+                  g_file_equal (parent, button_parent);
+
+        if (parent != NULL)
+        {
+            g_object_unref (parent);
+        }
+        if (button_parent != NULL)
+        {
+            g_object_unref (button_parent);
+        }
+
+        if (renamed)
+        {
+            button_data->path = g_object_ref (location);
+        }
+        else
+        {
+            /* the file has been moved.
+             * If it was below the currently displayed location, remove it.
+             * If it was not below the currently displayed location, update the path bar
+             */
+            child = g_file_has_prefix (button_data->path,
+                                       self->current_path);
+
+            if (child)
+            {
+                /* moved file inside current path hierarchy */
+                g_object_unref (location);
+                location = g_file_get_parent (button_data->path);
+                current_location = g_object_ref (self->current_path);
+            }
+            else
+            {
+                /* moved current path, or file outside current path hierarchy.
+                 * Update path bar to new locations.
+                 */
+                current_location = nautilus_file_get_location (current_button_data->file);
+            }
+
+            nautilus_path_bar_update_path (self, location);
+            nautilus_path_bar_set_path (self, current_location);
+            g_object_unref (location);
+            g_object_unref (current_location);
+            return;
+        }
+    }
+    else if (nautilus_file_is_gone (file))
+    {
+        gint idx, position;
+
+        /* if the current or a parent location are gone, clear all the buttons,
+         * the view will set the new path.
+         */
+        current_location = nautilus_file_get_location (current_button_data->file);
+
+        if (g_file_has_prefix (current_location, location) ||
+            g_file_equal (current_location, location))
+        {
+            nautilus_path_bar_clear_buttons (self);
+        }
+        else if (g_file_has_prefix (location, current_location))
+        {
+            /* remove this and the following buttons */
+            position = g_list_position (self->button_list,
+                                        g_list_find (self->button_list, button_data));
+
+            if (position != -1)
+            {
+                for (idx = 0; idx <= position; idx++)
+                {
+                    ButtonData *data;
+
+                    data = BUTTON_DATA (self->button_list->data);
+
+                    gtk_box_remove (GTK_BOX (self->buttons_box), data->container);
+                    self->button_list = g_list_remove (self->button_list, data);
+                    button_data_free (data);
+                }
+            }
+        }
+
+        g_object_unref (current_location);
+        g_object_unref (location);
+        return;
+    }
+    g_object_unref (location);
+
+    /* MOUNTs use the GMount as the name, so don't update for those */
+    if (button_data->type != MOUNT_BUTTON)
+    {
+        display_name = nautilus_file_get_display_name (file);
+        if (g_strcmp0 (display_name, button_data->dir_name) != 0)
+        {
+            g_free (button_data->dir_name);
+            button_data->dir_name = g_strdup (display_name);
+        }
+
+        g_free (display_name);
+    }
+    current_dir = g_file_equal (self->current_path, button_data->path);
+    nautilus_path_bar_update_button_appearance (button_data, current_dir);
+}
+
+static ButtonData *
+make_button_data (NautilusPathBar *self,
+                  NautilusFile    *file,
+                  gboolean         current_dir)
+{
+    GFile *path;
+    GtkWidget *child = NULL;
+    GtkEventController *controller;
+    ButtonData *button_data;
+
+    path = nautilus_file_get_location (file);
+
+    /* Is it a special button? */
+    button_data = g_new0 (ButtonData, 1);
+
+    setup_button_type (button_data, self, path);
+    button_data->button = gtk_button_new ();
+    gtk_widget_set_focus_on_click (button_data->button, FALSE);
+    gtk_widget_set_name (button_data->button, "NautilusPathButton");
+
+    /* TODO update button type when xdg directories change */
+
+    button_data->image = gtk_image_new ();
+
+    switch (button_data->type)
+    {
+        case ROOT_BUTTON:
+        case ADMIN_ROOT_BUTTON:
+        case HOME_BUTTON:
+        case MOUNT_BUTTON:
+        case TRASH_BUTTON:
+        case RECENT_BUTTON:
+        case STARRED_BUTTON:
+        case OTHER_LOCATIONS_BUTTON:
+        {
+            button_data->label = gtk_label_new (NULL);
+            child = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
+            button_data->container = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
+            gtk_box_append (GTK_BOX (button_data->container), button_data->button);
+
+            gtk_box_append (GTK_BOX (child), button_data->image);
+            gtk_box_append (GTK_BOX (child), button_data->label);
+        }
+        break;
+
+        case NORMAL_BUTTON:
+        /* Fall through */
+        default:
+        {
+            GtkWidget *separator_label;
+
+            separator_label = gtk_label_new (G_DIR_SEPARATOR_S);
+            gtk_style_context_add_class (gtk_widget_get_style_context (separator_label), "dim-label");
+            button_data->label = gtk_label_new (NULL);
+            child = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
+            button_data->container = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
+            gtk_box_append (GTK_BOX (button_data->container), separator_label);
+            gtk_box_append (GTK_BOX (button_data->container), button_data->button);
+
+            gtk_box_append (GTK_BOX (child), button_data->label);
+        }
+        break;
+    }
+
+    if (current_dir)
+    {
+        gtk_style_context_add_class (gtk_widget_get_style_context (button_data->button),
+                                     "current-dir");
+        gtk_widget_set_hexpand (button_data->button, TRUE);
+        gtk_widget_set_halign (button_data->label, GTK_ALIGN_START);
+    }
+
+    if (button_data->label != NULL)
+    {
+        PangoAttrList *attrs;
+
+        gtk_label_set_single_line_mode (GTK_LABEL (button_data->label), TRUE);
+
+        attrs = pango_attr_list_new ();
+        pango_attr_list_insert (attrs, pango_attr_weight_new (PANGO_WEIGHT_BOLD));
+        gtk_label_set_attributes (GTK_LABEL (button_data->label), attrs);
+        pango_attr_list_unref (attrs);
+
+        if (!current_dir)
+        {
+            gtk_style_context_add_class (gtk_widget_get_style_context (button_data->label), "dim-label");
+            gtk_style_context_add_class (gtk_widget_get_style_context (button_data->image), "dim-label");
+        }
+    }
+
+    if (button_data->path == NULL)
+    {
+        button_data->path = g_object_ref (path);
+    }
+    if (button_data->dir_name == NULL)
+    {
+        button_data->dir_name = nautilus_file_get_display_name (file);
+    }
+    if (button_data->file == NULL)
+    {
+        button_data->file = nautilus_file_ref (file);
+        nautilus_file_monitor_add (button_data->file, button_data,
+                                   NAUTILUS_FILE_ATTRIBUTES_FOR_ICON);
+        button_data->file_changed_signal_id =
+            g_signal_connect (button_data->file, "changed",
+                              G_CALLBACK (button_data_file_changed),
+                              button_data);
+    }
+
+    gtk_button_set_child (GTK_BUTTON (button_data->button), child);
+    gtk_widget_show (button_data->container);
+
+    button_data->path_bar = self;
+
+    nautilus_path_bar_update_button_state (button_data, current_dir);
+
+    g_signal_connect (button_data->button, "clicked", G_CALLBACK (button_clicked_cb), button_data);
+
+    /* A gesture is needed here, because GtkButton doesn’t react to middle- or
+     * secondary-clicking.
+     */
+    controller = GTK_EVENT_CONTROLLER (gtk_gesture_click_new ());
+    gtk_widget_add_controller (button_data->button, controller);
+    gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (controller), 0);
+    g_signal_connect (controller, "pressed",
+                      G_CALLBACK (on_click_gesture_pressed), button_data);
+
+    nautilus_drag_slot_proxy_init (button_data->button, button_data->file, NULL);
+
+    g_object_unref (path);
+
+    return button_data;
+}
+
+static void
+nautilus_path_bar_update_path (NautilusPathBar *self,
+                               GFile           *file_path)
+{
+    NautilusFile *file;
+    gboolean first_directory;
+    GList *new_buttons, *l;
+    ButtonData *button_data;
+
+    g_return_if_fail (NAUTILUS_IS_PATH_BAR (self));
+    g_return_if_fail (file_path != NULL);
+
+    first_directory = TRUE;
+    new_buttons = NULL;
+
+    file = nautilus_file_get (file_path);
+
+    while (file != NULL)
+    {
+        NautilusFile *parent_file;
+
+        parent_file = nautilus_file_get_parent (file);
+        button_data = make_button_data (self, file, first_directory);
+        nautilus_file_unref (file);
+
+        if (first_directory)
+        {
+            first_directory = FALSE;
+        }
+
+        new_buttons = g_list_prepend (new_buttons, button_data);
+
+        if (parent_file != NULL &&
+            button_data->is_root)
+        {
+            nautilus_file_unref (parent_file);
+            break;
+        }
+
+        file = parent_file;
+    }
+
+    nautilus_path_bar_clear_buttons (self);
+
+    /* Buttons are listed in reverse order such that the current location is
+     * always the first link. */
+    self->button_list = g_list_reverse (new_buttons);
+
+    for (l = self->button_list; l; l = l->next)
+    {
+        GtkWidget *container;
+        container = BUTTON_DATA (l->data)->container;
+        gtk_box_prepend (GTK_BOX (self->buttons_box), container);
+    }
+}
+
+void
+nautilus_path_bar_set_path (NautilusPathBar *self,
+                            GFile           *file_path)
+{
+    ButtonData *button_data;
+
+    g_return_if_fail (NAUTILUS_IS_PATH_BAR (self));
+    g_return_if_fail (file_path != NULL);
+
+    nautilus_path_bar_update_path (self, file_path);
+    button_data = g_list_nth_data (self->button_list, 0);
+
+    if (self->current_path != NULL)
+    {
+        g_object_unref (self->current_path);
+    }
+
+    self->current_path = g_object_ref (file_path);
+    self->current_button_data = button_data;
+}