gth-browser.c 134 KB
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */

/*
 *  GThumb
 *
 *  Copyright (C) 2005-2009 Free Software Foundation, Inc.
 *
 *  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, write to the Free Software
 *  Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA.
 */

#include <config.h>
#include <gtk/gtk.h>
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#include <gdk/gdkkeysyms.h>
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#include "dlg-personalize-filters.h"
#include "gconf-utils.h"
#include "glib-utils.h"
#include "gtk-utils.h"
#include "gth-browser.h"
#include "gth-browser-actions-callbacks.h"
#include "gth-browser-actions-entries.h"
#include "gth-browser-ui.h"
#include "gth-duplicable.h"
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#include "gth-embedded-dialog.h"
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#include "gth-enum-types.h"
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#include "gth-error.h"
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#include "gth-file-list.h"
#include "gth-file-view.h"
#include "gth-file-selection.h"
#include "gth-filter.h"
#include "gth-filterbar.h"
#include "gth-folder-tree.h"
#include "gth-icon-cache.h"
#include "gth-image-preloader.h"
#include "gth-location-chooser.h"
#include "gth-main.h"
#include "gth-marshal.h"
#include "gth-metadata-provider.h"
#include "gth-preferences.h"
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#include "gth-progress-dialog.h"
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#include "gth-sidebar.h"
#include "gth-statusbar.h"
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#include "gth-toggle-menu-tool-button.h"
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#include "gth-viewer-page.h"
#include "gth-window.h"
#include "gth-window-actions-callbacks.h"
#include "gth-window-actions-entries.h"
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#include "main.h"
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#define GTH_BROWSER_CALLBACK(f) ((GthBrowserCallback) (f))
#define GO_BACK_HISTORY_POPUP "/GoBackHistoryPopup"
#define GO_FORWARD_HISTORY_POPUP "/GoForwardHistoryPopup"
#define GO_PARENT_POPUP "/GoParentPopup"
#define MAX_HISTORY_LENGTH 15
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#define GCONF_NOTIFICATIONS 11
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#define DEF_SIDEBAR_WIDTH 255
#define DEF_VIEWER_SIDEBAR_WIDTH 295
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#define DEF_PROPERTIES_HEIGHT 128
#define DEF_THUMBNAIL_SIZE 128
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#define LOAD_FILE_DELAY 150
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#define HIDE_MOUSE_DELAY 1000
#define MOTION_THRESHOLD 0
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typedef void (*GthBrowserCallback) (GthBrowser *, gboolean cancelled, gpointer user_data);

enum {
	LOCATION_READY,
	LAST_SIGNAL
};

struct _GthBrowserPrivateData {
	/* UI staff */

	GtkUIManager      *ui;
	GtkActionGroup    *actions;
	GtkWidget         *statusbar;
	GtkWidget         *browser_toolbar;
	GtkWidget         *browser_container;
	GtkWidget         *browser_sidebar;
	GtkWidget         *location_chooser;
	GtkWidget         *folder_tree;
	GtkWidget         *history_list_popup_menu;
	GtkWidget         *folder_popup;
	GtkWidget         *file_list_popup;
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	GtkWidget         *file_popup;
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	GtkWidget         *filterbar;
	GtkWidget         *file_list;
	GtkWidget         *list_extra_widget_container;
	GtkWidget         *list_extra_widget;
	GtkWidget         *file_properties;

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	GList             *viewer_pages;
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	GtkWidget         *viewer_pane;
	GtkWidget         *viewer_sidebar;
	GtkWidget         *viewer_container;
	GtkWidget         *viewer_toolbar;
	GthViewerPage     *viewer_page;
	GthImagePreloader *image_preloader;

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	GtkWidget         *progress_dialog;

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	GHashTable        *named_dialogs;
	GList             *toolbar_menu_buttons[GTH_BROWSER_N_PAGES];

	guint              browser_ui_merge_id;
	guint              viewer_ui_merge_id;

	/* Browser data */

	guint              help_message_cid;
	gulong             folder_changed_id;
	gulong             file_renamed_id;
	gulong             metadata_changed_id;
	gulong             entry_points_changed_id;
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	gulong             order_changed_id;
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	GthFileData       *location;
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	GthFileData       *current_file;
	GthFileSource     *location_source;
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	GFile             *monitor_location;
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	gboolean           activity_ref;
	GthIconCache      *menu_icon_cache;
	guint              cnxn_id[GCONF_NOTIFICATIONS];
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	GthFileDataSort   *current_sort_type;
	gboolean           current_sort_inverse;
	GthFileDataSort   *default_sort_type;
	gboolean           default_sort_inverse;
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	gboolean           show_hidden_files;
	gboolean           fast_file_type;
	gboolean           closing;
	GthTask           *task;
	gulong             task_completed;
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	gulong             task_progress;
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	GList             *background_tasks;
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	GList             *load_data_queue;
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	guint              load_file_timeout;
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	char              *list_attributes;
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	gboolean           constructed;
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	/* fulscreen */

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	gboolean           fullscreen;
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	GtkWidget         *fullscreen_toolbar;
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	GList             *fullscreen_controls;
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	guint              hide_mouse_timeout;
	guint              motion_signal;
	gdouble            last_mouse_x;
	gdouble            last_mouse_y;
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	/* history */

	GList             *history;
	GList             *history_current;
};


static GthWindowClass *parent_class = NULL;
static guint gth_browser_signals[LAST_SIGNAL] = { 0 };
static GList *browser_list = NULL;


/* -- monitor_event_data -- */


typedef struct {
	int              ref;
	GthFileSource   *file_source;
	GFile           *parent;
	GthMonitorEvent  event;
	GthBrowser      *browser;
	gboolean         update_file_list;
	gboolean         update_folder_tree;
} MonitorEventData;


static MonitorEventData *
monitor_event_data_new (void)
{
	MonitorEventData *monitor_data;

	monitor_data = g_new0 (MonitorEventData, 1);
	monitor_data->ref = 1;

	return monitor_data;
}


G_GNUC_UNUSED
static MonitorEventData *
monitor_event_data_ref (MonitorEventData *monitor_data)
{
	monitor_data->ref++;
	return monitor_data;
}


static void
monitor_event_data_unref (MonitorEventData *monitor_data)
{
	monitor_data->ref--;

	if (monitor_data->ref > 0)
		return;

	g_object_unref (monitor_data->file_source);
	g_object_unref (monitor_data->parent);
	g_free (monitor_data);
}


/* -- gth_browser -- */


static void
_gth_browser_set_action_sensitive (GthBrowser  *browser,
				   const char  *action_name,
				   gboolean     sensitive)
{
	GtkAction *action;

	action = gtk_action_group_get_action (browser->priv->actions, action_name);
	g_object_set (action, "sensitive", sensitive, NULL);
}


static void
_gth_browser_set_action_active (GthBrowser  *browser,
				const char  *action_name,
				gboolean     active)
{
	GtkAction *action;

	action = gtk_action_group_get_action (browser->priv->actions, action_name);
	g_object_set (action, "active", active, NULL);
}


static void
activate_go_back_menu_item (GtkMenuItem *menuitem,
			    gpointer     data)
{
	GthBrowser *browser = data;

	gth_browser_go_back (browser, GPOINTER_TO_INT (g_object_get_data (G_OBJECT (menuitem), "steps")));
}


static void
activate_go_forward_menu_item (GtkMenuItem *menuitem,
			       gpointer     data)
{
	GthBrowser *browser = data;

	gth_browser_go_forward (browser, GPOINTER_TO_INT (g_object_get_data (G_OBJECT (menuitem), "steps")));
}


static void
activate_go_up_menu_item (GtkMenuItem *menuitem,
			  gpointer     data)
{
	GthBrowser *browser = data;

	gth_browser_go_up (browser, GPOINTER_TO_INT (g_object_get_data (G_OBJECT (menuitem), "steps")));
}


static void
activate_go_to_menu_item (GtkMenuItem *menuitem,
			  gpointer     data)
{
	GthBrowser *browser = data;
	GFile      *location;

	location = g_file_new_for_uri (g_object_get_data (G_OBJECT (menuitem), "uri"));
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	gth_browser_go_to (browser, location, NULL);
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	g_object_unref (location);
}


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void
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_gth_browser_add_file_menu_item_full (GthBrowser *browser,
				      GtkWidget  *menu,
				      GFile      *file,
				      GIcon      *icon,
				      const char *display_name,
				      GthAction   action,
				      int         steps,
				      int         position)
{
	GdkPixbuf *pixbuf;
	GtkWidget *menu_item;

	pixbuf = gth_icon_cache_get_pixbuf (browser->priv->menu_icon_cache, icon);

	menu_item = gtk_image_menu_item_new_with_label (display_name);
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	gtk_image_menu_item_set_always_show_image (GTK_IMAGE_MENU_ITEM (menu_item), TRUE);
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	if (pixbuf != NULL)
		gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (menu_item), gtk_image_new_from_pixbuf (pixbuf));
	else
		gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (menu_item), gtk_image_new_from_stock (GTK_STOCK_OPEN, GTK_ICON_SIZE_MENU));
	gtk_widget_show (menu_item);
	if (position == -1)
		gtk_menu_shell_append (GTK_MENU_SHELL (menu), menu_item);
	else
		gtk_menu_shell_insert (GTK_MENU_SHELL (menu), menu_item, position);

	if (action == GTH_ACTION_GO_TO) {
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		char *parse_name;
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		char *tooltip;
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		parse_name = g_file_get_parse_name (file);
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		tooltip = g_strdup_printf (_("Open %s"), parse_name);
		gtk_widget_set_tooltip_text (GTK_WIDGET (menu_item), tooltip);
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		g_object_set_data_full (G_OBJECT (menu_item),
					"uri",
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					g_file_get_uri (file),
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					(GDestroyNotify) g_free);
		g_signal_connect (menu_item,
				  "activate",
				  G_CALLBACK (activate_go_to_menu_item),
			  	  browser);
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		g_free (tooltip);
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		g_free (parse_name);
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	}
	else {
		g_object_set_data (G_OBJECT (menu_item),
				   "steps",
				   GINT_TO_POINTER (steps));
		if (action == GTH_ACTION_GO_BACK)
			g_signal_connect (menu_item,
					  "activate",
					  G_CALLBACK (activate_go_back_menu_item),
			  	  	  browser);
		else if (action == GTH_ACTION_GO_FORWARD)
			g_signal_connect (menu_item,
					  "activate",
					  G_CALLBACK (activate_go_forward_menu_item),
			  	  	  browser);
		else if (action == GTH_ACTION_GO_UP)
			g_signal_connect (menu_item,
					  "activate",
					  G_CALLBACK (activate_go_up_menu_item),
			  	  	  browser);
	}

	if (pixbuf != NULL)
		g_object_unref (pixbuf);
}


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void
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_gth_browser_add_file_menu_item (GthBrowser *browser,
				 GtkWidget  *menu,
			 	 GFile      *file,
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			 	 const char *display_name,
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			 	 GthAction   action,
				 int         steps)
{
	GthFileSource *file_source;
	GFileInfo     *info;

	file_source = gth_main_get_file_source (file);
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	info = gth_file_source_get_file_info (file_source, file, GFILE_DISPLAY_ATTRIBUTES);
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	if (info != NULL) {
		_gth_browser_add_file_menu_item_full (browser,
						      menu,
						      file,
						      g_file_info_get_icon (info),
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						      (display_name != NULL) ? display_name : g_file_info_get_display_name (info),
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						      action,
						      steps,
						      -1);
		g_object_unref (info);
	}
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	else {
		GIcon *icon;
		char  *name;

		icon = _g_file_get_icon (file);
		name = _g_file_get_display_name (file);
		_gth_browser_add_file_menu_item_full (browser,
						      menu,
						      file,
						      icon,
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						      (display_name != NULL) ? display_name : name,
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						      action,
						      steps,
						      -1);

		g_free (name);
		g_object_unref (icon);
	}

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	g_object_unref (file_source);
}


static void
_gth_browser_update_parent_list (GthBrowser *browser)
{
	GtkWidget *menu;
	int        i;
	GFile     *parent;

	menu = gtk_ui_manager_get_widget (browser->priv->ui, GO_PARENT_POPUP);
	_gtk_container_remove_children (GTK_CONTAINER (menu), NULL, NULL);

	if (browser->priv->location == NULL)
		return;

	/* Update the parent list menu. */

	i = 0;
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	parent = g_file_get_parent (browser->priv->location->file);
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	while (parent != NULL) {
		GFile *parent_parent;

		_gth_browser_add_file_menu_item (browser,
						 menu,
						 parent,
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						 NULL,
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						 GTH_ACTION_GO_UP,
						 ++i);

		parent_parent = g_file_get_parent (parent);
		g_object_unref (parent);
		parent = parent_parent;
	}
}


void
gth_browser_update_title (GthBrowser *browser)
{
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	GString    *title;
	const char *name = NULL;
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	title = g_string_new (NULL);
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	if (browser->priv->current_file != NULL)
		name = g_file_info_get_display_name (browser->priv->current_file->info);
	else if (browser->priv->location != NULL)
		name = g_file_info_get_display_name (browser->priv->location->info);
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	if (name != NULL) {
		g_string_append (title, name);
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		if (gth_browser_get_file_modified (browser)) {
			g_string_append (title, " ");
			g_string_append (title, _("[modified]"));
		}
	}
	else
		g_string_append (title, _("gthumb"));

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	if (browser->priv->current_file != NULL) {
		GthFileStore *file_store;
		int           pos;

		file_store = gth_browser_get_file_store (browser);
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		pos = gth_file_store_get_pos (file_store, browser->priv->current_file->file);
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		if (pos >= 0)
			g_string_append_printf (title, " (%d/%d)", pos + 1, gth_file_store_n_visibles (file_store));
	}

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	gtk_window_set_title (GTK_WINDOW (browser), title->str);

	g_string_free (title, TRUE);
}


void
gth_browser_update_sensitivity (GthBrowser *browser)
{
	GFile    *parent;
	gboolean  parent_available;
	gboolean  viewer_can_save;
	gboolean  modified;
	int       current_file_pos;
	int       n_files;
	int       n_selected;

	if (browser->priv->location != NULL)
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		parent = g_file_get_parent (browser->priv->location->file);
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	else
		parent = NULL;
	parent_available = (parent != NULL);
	_g_object_unref (parent);

	viewer_can_save = (browser->priv->location != NULL) && (browser->priv->viewer_page != NULL) && gth_viewer_page_can_save (GTH_VIEWER_PAGE (browser->priv->viewer_page));
	modified = gth_browser_get_file_modified (browser);

	if (browser->priv->current_file != NULL)
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		current_file_pos = gth_file_store_get_pos (gth_browser_get_file_store (browser), browser->priv->current_file->file);
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	else
		current_file_pos = -1;
	n_files = gth_file_store_n_visibles (gth_browser_get_file_store (browser));
	n_selected = gth_file_selection_get_n_selected (GTH_FILE_SELECTION (gth_browser_get_file_list_view (browser)));

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	_gth_browser_set_action_sensitive (browser, "File_Open", n_selected == 1);
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	_gth_browser_set_action_sensitive (browser, "File_Save", viewer_can_save && modified);
	_gth_browser_set_action_sensitive (browser, "File_SaveAs", viewer_can_save);
	_gth_browser_set_action_sensitive (browser, "File_Revert", viewer_can_save && modified);
	_gth_browser_set_action_sensitive (browser, "Go_Up", parent_available);
	_gth_browser_set_action_sensitive (browser, "Toolbar_Go_Up", parent_available);
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	_gth_browser_set_action_sensitive (browser, "View_Stop", browser->priv->fullscreen || (browser->priv->activity_ref > 0));
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	_gth_browser_set_action_sensitive (browser, "View_Prev", current_file_pos > 0);
	_gth_browser_set_action_sensitive (browser, "View_Next", (current_file_pos != -1) && (current_file_pos < n_files - 1));

	gth_sidebar_update_sensitivity (GTH_SIDEBAR (browser->priv->viewer_sidebar));
	if (browser->priv->viewer_page != NULL)
		gth_viewer_page_update_sensitivity (browser->priv->viewer_page);

	gth_hook_invoke ("gth-browser-update-sensitivity", browser);
}


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void
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gth_browser_update_extra_widget (GthBrowser *browser)
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{
	gedit_message_area_clear_action_area (GEDIT_MESSAGE_AREA (browser->priv->list_extra_widget));
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	if (g_file_info_get_icon (browser->priv->location->info) != NULL)
		gth_embedded_dialog_set_gicon (GTH_EMBEDDED_DIALOG (browser->priv->list_extra_widget), g_file_info_get_icon (browser->priv->location->info));
	if (g_file_info_get_display_name (browser->priv->location->info) != NULL)
		gth_embedded_dialog_set_primary_text (GTH_EMBEDDED_DIALOG (browser->priv->list_extra_widget), g_file_info_get_display_name (browser->priv->location->info));
	gth_hook_invoke ("gth-browser-update-extra-widget", browser);
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}


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static void
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_gth_browser_set_location (GthBrowser  *browser,
			   GthFileData *location)
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{
	if (location == NULL)
		return;

	if (browser->priv->location != NULL)
		g_object_unref (browser->priv->location);
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	browser->priv->location = gth_file_data_dup (location);
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	gth_browser_update_title (browser);
	_gth_browser_update_parent_list (browser);
	gth_browser_update_sensitivity (browser);
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	gth_browser_update_extra_widget (browser);
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	g_signal_handlers_block_by_data (browser->priv->location_chooser, browser);
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	gth_location_chooser_set_current (GTH_LOCATION_CHOOSER (browser->priv->location_chooser), browser->priv->location->file);
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	g_signal_handlers_unblock_by_data (browser->priv->location_chooser, browser);
}


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static void
_gth_browser_set_location_from_file (GthBrowser *browser,
				     GFile      *file)
{
	GthFileSource *file_source;
	GthFileData   *file_data;
	GFileInfo     *info;

	file_source = gth_main_get_file_source (file);
	info = gth_file_source_get_file_info (file_source, file, GFILE_DISPLAY_ATTRIBUTES);
	file_data = gth_file_data_new (file, info);
	_gth_browser_set_location (browser, file_data);

	g_object_unref (file_data);
	_g_object_unref (info);
	g_object_unref (file_source);
}


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static void
_gth_browser_update_go_sensitivity (GthBrowser *browser)
{
	gboolean  sensitive;

	sensitive = (browser->priv->history_current != NULL) && (browser->priv->history_current->next != NULL);
	_gth_browser_set_action_sensitive (browser, "Go_Back", sensitive);
	_gth_browser_set_action_sensitive (browser, "Toolbar_Go_Back", sensitive);

	sensitive = (browser->priv->history_current != NULL) && (browser->priv->history_current->prev != NULL);
	_gth_browser_set_action_sensitive (browser, "Go_Forward", sensitive);
	_gth_browser_set_action_sensitive (browser, "Toolbar_Go_Forward", sensitive);
}


static void
activate_clear_history_menu_item (GtkMenuItem *menuitem,
				  gpointer     data)
{
	gth_browser_clear_history ((GthBrowser *)data);
}


static void
_gth_browser_add_clear_history_menu_item (GthBrowser *browser,
					  GtkWidget  *menu)
{
	GtkWidget *menu_item;

	menu_item = gtk_separator_menu_item_new ();
	gtk_widget_show (menu_item);
	gtk_menu_shell_append (GTK_MENU_SHELL (menu), menu_item);

	menu_item = gtk_image_menu_item_new_with_mnemonic (_("_Delete History"));
	gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (menu_item), gtk_image_new_from_stock (GTK_STOCK_CLEAR, GTK_ICON_SIZE_MENU));
	gtk_widget_show (menu_item);
	gtk_menu_shell_append (GTK_MENU_SHELL (menu), menu_item);

	g_signal_connect (menu_item,
			  "activate",
			  G_CALLBACK (activate_clear_history_menu_item),
		  	  browser);
}


static void
_gth_browser_update_history_list (GthBrowser *browser)
{
	GtkWidget *menu;
	GList     *scan;
	GtkWidget *separator;

	_gth_browser_update_go_sensitivity (browser);

	/* Update the back history menu. */

	menu = gtk_ui_manager_get_widget (browser->priv->ui, GO_BACK_HISTORY_POPUP);
	_gtk_container_remove_children (GTK_CONTAINER (menu), NULL, NULL);

	if ((browser->priv->history != NULL)
	    && (browser->priv->history_current->next != NULL))
	{
		int i;

		for (i = 0, scan = browser->priv->history_current->next;
		     scan && (i < MAX_HISTORY_LENGTH);
		     scan = scan->next)
		{
			_gth_browser_add_file_menu_item (browser,
							 menu,
							 scan->data,
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							 NULL,
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							 GTH_ACTION_GO_BACK,
							 ++i);
		}
		if (i > 0)
			_gth_browser_add_clear_history_menu_item (browser, menu);
	}

	/* Update the forward history menu. */

	menu = gtk_ui_manager_get_widget (browser->priv->ui, GO_FORWARD_HISTORY_POPUP);
	_gtk_container_remove_children (GTK_CONTAINER (menu), NULL, NULL);

	if ((browser->priv->history != NULL)
	    && (browser->priv->history_current->prev != NULL))
	{
		int i;

		for (i = 0, scan = browser->priv->history_current->prev;
		     scan && (i < MAX_HISTORY_LENGTH);
		     scan = scan->prev)
		{
			_gth_browser_add_file_menu_item (browser,
							 menu,
							 scan->data,
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							 NULL,
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							 GTH_ACTION_GO_FORWARD,
							 ++i);
		}
		if (i > 0)
			_gth_browser_add_clear_history_menu_item (browser, menu);
	}

	/* Update the history list in the go menu */

	separator = gtk_ui_manager_get_widget (browser->priv->ui, "/MenuBar/Go/HistoryList");
	menu = gtk_widget_get_parent (separator);

	_gtk_container_remove_children (GTK_CONTAINER (menu), separator, NULL);

	if (browser->priv->history != NULL) {
		int i;

		for (i = 0, scan = browser->priv->history;
		     scan && (i < MAX_HISTORY_LENGTH);
		     scan = scan->next)
		{
			_gth_browser_add_file_menu_item (browser,
							 menu,
							 scan->data,
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							 NULL,
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							 GTH_ACTION_GO_TO,
							 ++i);
		}
	}

	separator = gtk_ui_manager_get_widget (browser->priv->ui, "/MenuBar/Go/BeforeHistoryList");
	gtk_widget_show (separator);
}


static void
_gth_browser_add_to_history (GthBrowser *browser,
			     GFile      *file)
{
	if (file == NULL)
		return;

	if ((browser->priv->history_current == NULL) || ! g_file_equal (file, browser->priv->history_current->data)) {
		browser->priv->history = g_list_prepend (browser->priv->history, g_object_ref (file));
		browser->priv->history_current = browser->priv->history;
	}
}


static void
_gth_browser_monitor_entry_points (GthBrowser *browser)
{
	GList *scan;

	for (scan = gth_main_get_all_file_sources (); scan; scan = scan->next) {
		GthFileSource *file_source = scan->data;
		gth_file_source_monitor_entry_points (file_source);
	}
}


static void
_gth_browser_update_entry_point_list (GthBrowser *browser)
{
	GtkWidget *separator1;
	GtkWidget *separator2;
	GtkWidget *menu;
	GList     *entry_points;
	GList     *scan;
	int        position;
	GFile     *root;

	separator1 = gtk_ui_manager_get_widget (browser->priv->ui, "/MenuBar/Go/BeforeEntryPointList");
	separator2 = gtk_ui_manager_get_widget (browser->priv->ui, "/MenuBar/Go/EntryPointList");
	menu = gtk_widget_get_parent (separator1);
	_gtk_container_remove_children (GTK_CONTAINER (menu), separator1, separator2);

	separator1 = separator2;
	separator2 = gtk_ui_manager_get_widget (browser->priv->ui, "/MenuBar/Go/EntryPointListSeparator");
	_gtk_container_remove_children (GTK_CONTAINER (menu), separator1, separator2);

	position = 5;
	entry_points = gth_main_get_all_entry_points ();
	for (scan = entry_points; scan; scan = scan->next) {
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		GthFileData *file_data = scan->data;
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		g_file_info_set_attribute_boolean (file_data->info, "gthumb::entry-point", TRUE);
		g_file_info_set_sort_order (file_data->info, position);
		_gth_browser_add_file_menu_item_full (browser,
						      menu,
						      file_data->file,
						      g_file_info_get_icon (file_data->info),
						      g_file_info_get_display_name (file_data->info),
						      GTH_ACTION_GO_TO,
						      0,
						      position++);
	}
	root = g_file_new_for_uri ("gthumb-vfs:///");
	gth_folder_tree_set_children (GTH_FOLDER_TREE (browser->priv->folder_tree), root, entry_points);

	g_object_unref (root);
	_g_object_list_unref (entry_points);
}


static GthTest *
_gth_browser_get_file_filter (GthBrowser *browser)
{
	GthTest *filterbar_test;
	GthTest *test;

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	if (browser->priv->filterbar == NULL)
		return NULL;

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	filterbar_test = gth_filterbar_get_test (GTH_FILTERBAR (browser->priv->filterbar));
	test = gth_main_add_general_filter (filterbar_test);

	_g_object_unref (filterbar_test);

	return test;
}


static void
_gth_browser_update_statusbar_list_info (GthBrowser *browser)
{
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	GList   *file_list;
	int      n_total;
	goffset  size_total;
	GList   *scan;
	int      n_selected;
	goffset  size_selected;
	GList   *selected;
	char    *size_total_formatted;
	char    *size_selected_formatted;
	char    *text_total;
	char    *text_selected;
	char    *text;
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	/* total */

	file_list = gth_file_store_get_visibles (gth_browser_get_file_store (browser));
	n_total = 0;
	size_total = 0;
	for (scan = file_list; scan; scan = scan->next) {
		GthFileData *file_data = scan->data;

		n_total++;
		size_total += g_file_info_get_size (file_data->info);
	}
	_g_object_list_unref (file_list);

	/* selected */

	selected = gth_file_selection_get_selected (GTH_FILE_SELECTION (gth_browser_get_file_list_view (browser)));
	file_list = gth_file_list_get_files (GTH_FILE_LIST (gth_browser_get_file_list (browser)), selected);

	n_selected = 0;
	size_selected = 0;
	for (scan = file_list; scan; scan = scan->next) {
		GthFileData *file_data = scan->data;

		n_selected++;
		size_selected += g_file_info_get_size (file_data->info);
	}
	_g_object_list_unref (file_list);
	_gtk_tree_path_list_free (selected);

	/**/

	size_total_formatted = g_format_size_for_display (size_total);
	size_selected_formatted = g_format_size_for_display (size_selected);
	text_total = g_strdup_printf (g_dngettext (NULL, "%d file (%s)", "%d files (%s)", n_total), n_total, size_total_formatted);
	text_selected = g_strdup_printf (g_dngettext (NULL, "%d file (%s)", "%d files (%s)", n_selected), n_selected, size_selected_formatted);
	text = g_strconcat (text_total,
			    ((n_selected == 0) ? NULL : ", "),
			    text_selected,
			    NULL);
	gth_statusbar_set_list_info (GTH_STATUSBAR (browser->priv->statusbar), text);

	g_free (text);
	g_free (text_selected);
	g_free (text_total);
	g_free (size_selected_formatted);
	g_free (size_total_formatted);
}


typedef struct {
	GthBrowser    *browser;
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	GthFileData   *requested_folder;
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	GFile         *requested_folder_parent;
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	GFile         *scroll_to_file;
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	GthAction      action;
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	gboolean       automatic;
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	GList         *list;
	GList         *current;
	GFile         *entry_point;
	GthFileSource *file_source;
	GCancellable  *cancellable;
} LoadData;


static LoadData *
load_data_new (GthBrowser *browser,
	       GFile      *location,
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	       GFile      *scroll_to_file,
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	       GthAction   action,
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	       gboolean    automatic,
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	       GFile      *entry_point)
{
	LoadData *load_data;
	GFile    *file;

	load_data = g_new0 (LoadData, 1);
	load_data->browser = browser;
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	load_data->requested_folder = gth_file_data_new (location, NULL);
	load_data->requested_folder_parent = g_file_get_parent (load_data->requested_folder->file);
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	if (scroll_to_file != NULL)
		load_data->scroll_to_file = g_file_dup (scroll_to_file);
	else if (browser->priv->current_file != NULL)
		load_data->scroll_to_file = g_file_dup (browser->priv->current_file->file);
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	load_data->action = action;
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	load_data->automatic = automatic;
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	load_data->cancellable = g_cancellable_new ();

	if (entry_point == NULL)
		return load_data;

	load_data->entry_point = g_object_ref (entry_point);
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	load_data->file_source = gth_main_get_file_source (load_data->requested_folder->file);
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	file = g_object_ref (load_data->requested_folder->file);
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	load_data->list = g_list_prepend (NULL, g_object_ref (file));
	while (! g_file_equal (load_data->entry_point, file)) {
		GFile *parent;

		parent = g_file_get_parent (file);
		g_object_unref (file);
		file = parent;

		load_data->list = g_list_prepend (load_data->list, g_object_ref (file));
	}
	g_object_unref (file);
	load_data->current = NULL;

	browser->priv->load_data_queue = g_list_prepend (browser->priv->load_data_queue, load_data);

	return load_data;
}


static void
load_data_free (LoadData *data)
{
	data->browser->priv->load_data_queue = g_list_remove (data->browser->priv->load_data_queue, data);

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	g_object_unref (data->requested_folder);
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	_g_object_unref (data->requested_folder_parent);
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	_g_object_unref (data->scroll_to_file);
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	_g_object_unref (data->file_source);
	_g_object_list_unref (data->list);
	_g_object_unref (data->entry_point);
	g_object_unref (data->cancellable);
	g_free (data);
}


static void
load_data_cancel (LoadData *data)
{
	if (data->file_source != NULL)
		gth_file_source_cancel (data->file_source);
	g_cancellable_cancel (data->cancellable);
}


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static void _gth_browser_load (GthBrowser *browser, GFile *location, GFile *scroll_to_file, GthAction action, gboolean automatic);
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static void
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load_data_done (LoadData *load_data,
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		GError   *error)
{
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	GthBrowser *browser = load_data->browser;
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	{
		char *uri;

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		uri = g_file_get_uri (load_data->requested_folder->file);
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		debug (DEBUG_INFO, "LOAD READY: %s [%s]\n", uri, (error == NULL ? "Ok" : "Error"));
		performance (DEBUG_INFO, "load done for %s", uri);

		g_free (uri);
	}

	browser->priv->activity_ref--;
	g_signal_emit (G_OBJECT (browser),
		       gth_browser_signals[LOCATION_READY],
		       0,
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		       load_data->requested_folder->file,
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		       (error != NULL));

	if (error == NULL) {
		_g_object_unref (browser->priv->location_source);
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		browser->priv->location_source = g_object_ref (load_data->file_source);
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	}

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	if ((load_data->action == GTH_ACTION_GO_TO)
	    || (load_data->action == GTH_ACTION_GO_INTO)
	    || (load_data->action == GTH_ACTION_GO_BACK)
	    || (load_data->action == GTH_ACTION_GO_FORWARD)
	    || (load_data->action == GTH_ACTION_GO_UP)
	    || (load_data->action == GTH_ACTION_VIEW))
	{
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		gth_browser_update_extra_widget (browser);
		gth_hook_invoke ("gth-browser-load-location-after", browser, browser->priv->location, error);
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	}
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	if (error == NULL)
		return;

	if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
		g_error_free (error);
		return;
	}

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	if (load_data->automatic) {
		GFile *parent;

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		parent = g_file_get_parent (load_data->requested_folder->file);
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		if (parent != NULL) {
			_gth_browser_load (load_data->browser,
					   parent,
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					   NULL,
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					   load_data->action,
					   TRUE);
			g_object_unref (parent);
			return;
		}
	}

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	gth_browser_update_sensitivity (browser);
	_gtk_error_dialog_from_gerror_show (GTK_WINDOW (browser), _("Could not load the position"), &error);
}


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static const char *
_gth_browser_get_list_attributes (GthBrowser *browser,
				  gboolean    recalc)
{
	GString *attributes;
	GthTest *filter;
	char    *thumbnail_caption;

	if (recalc) {
		g_free (browser->priv->list_attributes);
		browser->priv->list_attributes = NULL;
	}

	if (browser->priv->list_attributes != NULL)
		return browser->priv->list_attributes;

	attributes = g_string_new ("");

	/* standard attributes */

	if (eel_gconf_get_boolean (PREF_FAST_FILE_TYPE, TRUE))
		g_string_append (attributes, GFILE_STANDARD_ATTRIBUTES_WITH_FAST_CONTENT_TYPE);
	else
		g_string_append (attributes, GFILE_STANDARD_ATTRIBUTES_WITH_CONTENT_TYPE);

	/* attributes required by the filter */

	filter = _gth_browser_get_file_filter (browser);
	if (filter != NULL) {
		const char *filter_attributes;

		filter_attributes = gth_test_get_attributes (GTH_TEST (filter));
		if (filter_attributes[0] != '\0') {
			g_string_append (attributes, ",");
			g_string_append (attributes, filter_attributes);
		}

		g_object_unref (filter);
	}

	/* attributes required for sorting */

	if ((browser->priv->current_sort_type != NULL) && (browser->priv->current_sort_type->required_attributes[0] != '\0')) {
		g_string_append (attributes, ",");
		g_string_append (attributes, browser->priv->current_sort_type->required_attributes);
	}

	/* attributes required for the thumbnail caption */

	thumbnail_caption = eel_gconf_get_string (PREF_THUMBNAIL_CAPTION, DEFAULT_THUMBNAIL_CAPTION);
	if ((thumbnail_caption[0] != '\0') && (strcmp (thumbnail_caption, "none") != 0)) {
		g_string_append (attributes, ",");
		g_string_append (attributes, thumbnail_caption);
		g_free (thumbnail_caption);
	}

	browser->priv->list_attributes = g_string_free (attributes, FALSE);

	return browser->priv->list_attributes;
}


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static void _gth_browser_load_ready_cb (GthFileSource *file_source, GList *files, GError *error, gpointer user_data);


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/* -- _gth_browser_set_sort_order -- */
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static gboolean
_gth_browser_reload_required (GthBrowser *browser)
{
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	char        *old_attributes;
	const char  *new_attributes;
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	gboolean     reload_required;

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	old_attributes = g_strdup (_gth_browser_get_list_attributes (browser, FALSE));
	new_attributes = _gth_browser_get_list_attributes (browser, TRUE);
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	reload_required = attribute_list_reload_required (old_attributes, new_attributes);
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	g_free (old_attributes);
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	return reload_required;
}


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static void
write_sort_order_ready_cb (GObject  *source,
		           GError   *error,
		           gpointer  user_data)
{
	GthBrowser *browser = user_data;

	if (browser->priv->constructed && _gth_browser_reload_required (browser))
		gth_browser_reload (browser);
}


static void
_gth_browser_set_sort_order (GthBrowser      *browser,
			     GthFileDataSort *sort_type,
			     gboolean         inverse,
			     gboolean         save)
{
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	g_return_if_fail (sort_type != NULL);

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	browser->priv->current_sort_type = sort_type;
	browser->priv->current_sort_inverse = inverse;
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	gth_file_list_set_sort_func (GTH_FILE_LIST (browser->priv->file_list),
				     sort_type->cmp_func,
				     inverse);
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	gth_browser_update_title (browser);

	if (! browser->priv->constructed)
		return;

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	g_file_info_set_attribute_string (browser->priv->location->info, "sort::type", (sort_type != NULL) ? sort_type->name : "general::unsorted");
	g_file_info_set_attribute_boolean (browser->priv->location->info, "sort::inverse", (sort_type != NULL) ? inverse : FALSE);
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	if (! save)
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		return;

	gth_file_source_write_metadata (browser->priv->location_source,
					browser->priv->location,
					"sort::type,sort::inverse",
					write_sort_order_ready_cb,
					browser);
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}


static void
requested_folder_attributes_ready_cb (GObject  *file_source,
				      GError   *error,
				      gpointer  user_data)
{
	LoadData   *load_data = user_data;
	GthBrowser *browser = load_data->browser;

	if (error != NULL) {
		load_data_done (load_data, error);
		load_data_free (load_data);
		return;
	}

	gth_file_data_set_info (browser->priv->location, load_data->requested_folder->info);

	browser->priv->current_sort_type = gth_main_get_sort_type (g_file_info_get_attribute_string (browser->priv->location->info, "sort::type"));
	browser->priv->current_sort_inverse = g_file_info_get_attribute_boolean (browser->priv->location->info, "sort::inverse");
	if (browser->priv->current_sort_type == NULL) {
		browser->priv->current_sort_type = browser->priv->default_sort_type;
		browser->priv->current_sort_inverse = browser->priv->default_sort_inverse;
		g_file_info_set_attribute_string (browser->priv->location->info, "sort::type", browser->priv->current_sort_type->name);
		g_file_info_set_attribute_boolean (browser->priv->location->info, "sort::inverse", browser->priv->current_sort_inverse);
	}
	_gth_browser_set_sort_order (browser, browser->priv->current_sort_type, browser->priv->current_sort_inverse, FALSE);

	gth_file_source_list (load_data->file_source,
			      load_data->requested_folder->file,
			      eel_gconf_get_boolean (PREF_FAST_FILE_TYPE, TRUE) ? GFILE_STANDARD_ATTRIBUTES_WITH_FAST_CONTENT_TYPE : GFILE_STANDARD_ATTRIBUTES_WITH_CONTENT_TYPE,
			      _gth_browser_load_ready_cb,
			      load_data);
}


static void
load_data_load_next_folder (LoadData *load_data)
{
	GthFolderTree *folder_tree;
	GFile         *folder_to_load;

	folder_tree = GTH_FOLDER_TREE (load_data->browser->priv->folder_tree);
	do {
		GtkTreePath *path;

		if (load_data->current == NULL)
			load_data->current = load_data->list;
		else
			load_data->current = load_data->current->next;
		folder_to_load = (GFile *) load_data->current->data;

		if (g_file_equal (folder_to_load, load_data->requested_folder->file))
			break;

		if ((load_data->requested_folder_parent != NULL) && g_file_equal (folder_to_load, load_data->requested_folder_parent))
			break;

		path = gth_folder_tree_get_path (folder_tree, folder_to_load);
		if (path == NULL)
			break;

		if (! gth_folder_tree_is_loaded (folder_tree, path)) {
			gtk_tree_path_free (path);
			break;
		}

		if (! g_file_equal (folder_to_load, load_data->requested_folder->file))
			gth_folder_tree_expand_row (folder_tree, path, FALSE);

		gtk_tree_path_free (path);
	}
	while (TRUE);

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	if ((load_data->action != GTH_ACTION_LIST_CHILDREN) && g_file_equal (folder_to_load, load_data->requested_folder->file))
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		gth_file_source_read_metadata (load_data->file_source,
					       load_data->requested_folder,
					       GFILE_BASIC_ATTRIBUTES ",access::*,sort::*",
					       requested_folder_attributes_ready_cb,
     					       load_data);
	else
		gth_file_source_list (load_data->file_source,
				      folder_to_load,
				      eel_gconf_get_boolean (PREF_FAST_FILE_TYPE, TRUE) ? GFILE_STANDARD_ATTRIBUTES_WITH_FAST_CONTENT_TYPE : GFILE_STANDARD_ATTRIBUTES_WITH_CONTENT_TYPE,
				      _gth_browser_load_ready_cb,
				      load_data);
}


static gboolean
_gth_browser_folder_is_visible (GthBrowser  *browser,
				GthFileData *file_data)
{
	if (browser->priv->show_hidden_files)
		return TRUE;
	else
		return ! g_file_info_get_is_hidden (file_data->info);
}


static GList *
_gth_browser_get_visible_folders (GthBrowser *browser,
				  GList      *list)
{
	GList *visible_list = NULL;
	GList *scan;

	for (scan = list; scan; scan = scan->next) {
		GthFileData *file_data = scan->data;

		if (_gth_browser_folder_is_visible (browser, file_data))
			visible_list = g_list_prepend (visible_list, g_object_ref (file_data));
	}

	return g_list_reverse (visible_list);
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}


static void
load_data_continue (LoadData *load_data,
		    GList    *loaded_files)
{
	GthBrowser  *browser = load_data->browser;
	GList       *files;
	GFile       *loaded_folder;
	GtkTreePath *path;
	GthTest     *filter;

	if ((load_data->action != GTH_ACTION_LIST_CHILDREN)
	    && ! g_file_equal (load_data->requested_folder->file, load_data->browser->priv->location->file))
	{
		load_data_done (load_data, g_error_new_literal (G_IO_ERROR, G_IO_ERROR_CANCELLED, ""));
		load_data_free (load_data);
		return;
	}

	files = _gth_browser_get_visible_folders (browser, loaded_files);

	loaded_folder = (GFile *) load_data->current->data;
	gth_folder_tree_set_children (GTH_FOLDER_TREE (browser->priv->folder_tree), loaded_folder, files);
	path = gth_folder_tree_get_path (GTH_FOLDER_TREE (browser->priv->folder_tree), loaded_folder);
	if ((path != NULL) && ! g_file_equal (loaded_folder, load_data->requested_folder->file))
		gth_folder_tree_expand_row (GTH_FOLDER_TREE (browser->priv->folder_tree), path, FALSE);

	if (! g_file_equal (loaded_folder, load_data->requested_folder->file)) {
		gtk_tree_path_free (path);
		_g_object_list_unref (files);

		load_data_load_next_folder (load_data);
		return;
	}

	load_data_done (load_data, NULL);

	switch (load_data->action) {
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	case GTH_ACTION_GO_TO:
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	case GTH_ACTION_GO_BACK:
	case GTH_ACTION_GO_FORWARD:
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	case GTH_ACTION_GO_UP:
	case GTH_ACTION_VIEW:
	case GTH_ACTION_LIST_CHILDREN:
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		if (path != NULL) {
			GList *entry_points;
			GList *scan;

			/* expand the path if it's an entry point */

			entry_points = gth_main_get_all_entry_points ();
			for (scan = entry_points; scan; scan = scan->next) {
				GthFileData *file_data = scan->data;

				if (g_file_equal (file_data->file, load_data->requested_folder->file)) {
					gtk_tree_view_expand_row (GTK_TREE_VIEW (browser->priv->folder_tree), path, FALSE);
					break;
				}
			}

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			if (load_data->action != GTH_ACTION_LIST_CHILDREN) {
				gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW (browser->priv->folder_tree), path, NULL, FALSE, 0.0, 0.0);
				gth_folder_tree_select_path (GTH_FOLDER_TREE (browser->priv->folder_tree), path);
			}

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			_g_object_list_unref (entry_points);
		}
		break;
	default:
		break;
	}

	switch (load_data->action) {
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	case GTH_ACTION_GO_TO:
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	case GTH_ACTION_GO_BACK:
	case GTH_ACTION_GO_FORWARD:
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	case GTH_ACTION_GO_UP:
	case GTH_ACTION_VIEW:
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		filter = _gth_browser_get_file_filter (browser);
		gth_file_list_set_filter (GTH_FILE_LIST (browser->priv->file_list), filter);
		gth_file_list_set_files (GTH_FILE_LIST (browser->priv->file_list), files);
		g_object_unref (filter);
		break;
	default:
		break;
	}

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	if (load_data->scroll_to_file != NULL) {
		int pos;

		pos = gth_file_store_get_pos (gth_browser_get_file_store (browser), load_data->scroll_to_file);
		if (pos >= 0) {
			GtkWidget *file_view;

			file_view = gth_browser_get_file_list_view (browser);
			gth_file_view_scroll_to (GTH_FILE_VIEW (file_view), pos, 0.5);
			gth_file_selection_select (GTH_FILE_SELECTION (file_view), pos);
		}
	}
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	gth_browser_update_sensitivity (browser);
	_gth_browser_update_statusbar_list_info (browser);

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	if (browser->priv->monitor_location != NULL)
		g_object_unref (browser->priv->monitor_location);
	browser->priv->monitor_location = g_file_dup (browser->priv->location->file);
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	gth_file_source_monitor_directory (browser->priv->location_source,
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					   browser->priv->monitor_location,
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					   TRUE);

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	if (StartSlideshow) {
		StartSlideshow = FALSE;
		gth_hook_invoke ("slideshow", browser);
	}

	if (StartInFullscreen) {
		StartInFullscreen = FALSE;
		gth_browser_fullscreen (browser);
	}

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	if (path != NULL)
		gtk_tree_path_free (path);
	load_data_free (load_data);
	_g_object_list_unref (files);
}


static void
metadata_ready_cb (GList    *files,
		   GError   *error,
		   gpointer  user_data)
{
	LoadData *load_data = user_data;

	if (error != NULL) {
		load_data_done (load_data, error);
		load_data_free (load_data);
		return;
	}

	load_data_continue (load_data, files);
}


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static void
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load_data_ready (LoadData *load_data,
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		 GList    *files,
		 GError   *error)
{
	if (error != NULL) {
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		load_data_done (load_data, error);
		load_data_free (load_data);
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	}
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	else if ((load_data->action != GTH_ACTION_LIST_CHILDREN)
		 && g_file_equal ((GFile *) load_data->current->data, load_data->requested_folder->file))
	{
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		_g_query_metadata_async (files,