/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Authors: Jeffrey Stedfast <fejj@ximian.com>
 *
 *  Copyright 2003 Ximian, Inc. (www.ximian.com)
 *
 *  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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>

#include <libxml/tree.h>

#include <glib/gi18n.h>
#include <gtk/gtk.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gdk/gdkkeysyms.h>
#include <glib/gi18n.h>

#include <camel/camel-session.h>
#include <camel/camel-store.h>
#include <camel/camel-folder.h>
#include <camel/camel-vee-store.h>
#include <camel/camel-vtrash-folder.h>
#include <camel/camel-stream-mem.h>
#include <camel/camel-file-utils.h>
#include <camel/camel-stream-fs.h>

#include "e-util/e-mktemp.h"
#include "e-util/e-request.h"
#include "e-util/e-icon-factory.h"
#include "e-util/e-error.h"

#include "em-vfolder-rule.h"

#include "mail-mt.h"
#include "mail-ops.h"
#include "mail-tools.h"
#include "mail-config.h"
#include "mail-component.h"
#include "mail-send-recv.h"
#include "mail-vfolder.h"

#include "em-utils.h"
#include "em-popup.h"
#include "em-marshal.h"
#include "em-folder-tree.h"
#include "em-folder-utils.h"
#include "em-folder-selector.h"
#include "em-folder-selection.h"
#include "em-folder-properties.h"

#define d(x)

struct _selected_uri {
	char *key;		/* store:path or account/path */
	char *uri;
	CamelStore *store;
	char *path;
};

struct _EMFolderTreePrivate {
	GtkTreeView *treeview;
	EMFolderTreeModel *model;
	
	GSList *select_uris;	/* selected_uri structures of each path pending selection. */
	GHashTable *select_uris_table; /*Removed as they're encountered, so use this to find uri's not presnet but selected */
	
	guint32 excluded;
	gboolean (*excluded_func)(EMFolderTree *emft, GtkTreeModel *model, GtkTreeIter *iter, void *data);
	void *excluded_data;

	guint do_multiselect:1;	/* multiple select mode */
	guint cursor_set:1;	/* set to TRUE means we or something
				 * else has set the cursor, otherwise
				 * we need to set it when we set the
				 * selection */
	
	guint save_state_id;
	
	guint autoscroll_id;
	guint autoexpand_id;
	GtkTreeRowReference *autoexpand_row;
	
	guint loading_row_id;
	guint loaded_row_id;
	
	GtkTreeRowReference *drag_row;
};

enum {
	FOLDER_ACTIVATED,  /* aka double-clicked or user hit enter */
	FOLDER_SELECTED,
	LAST_SIGNAL
};

/* Drag & Drop types */
enum DndDragType {
	DND_DRAG_TYPE_FOLDER,          /* drag an evo folder */
	DND_DRAG_TYPE_TEXT_URI_LIST,   /* drag to an mbox file */
	NUM_DRAG_TYPES
};

enum DndDropType {
	DND_DROP_TYPE_UID_LIST,        /* drop a list of message uids */
	DND_DROP_TYPE_FOLDER,          /* drop an evo folder */
	DND_DROP_TYPE_MESSAGE_RFC822,  /* drop a message/rfc822 stream */
	DND_DROP_TYPE_TEXT_URI_LIST,   /* drop an mbox file */
	NUM_DROP_TYPES
};

static GtkTargetEntry drag_types[] = {
	{ "x-folder",         0, DND_DRAG_TYPE_FOLDER         },
	{ "text/uri-list",    0, DND_DRAG_TYPE_TEXT_URI_LIST  },
};

static GtkTargetEntry drop_types[] = {
	{ "x-uid-list" ,      0, DND_DROP_TYPE_UID_LIST       },
	{ "x-folder",         0, DND_DROP_TYPE_FOLDER         },
	{ "message/rfc822",   0, DND_DROP_TYPE_MESSAGE_RFC822 },
	{ "text/uri-list",    0, DND_DROP_TYPE_TEXT_URI_LIST  },
};

static GdkAtom drag_atoms[NUM_DRAG_TYPES];
static GdkAtom drop_atoms[NUM_DROP_TYPES];

static guint signals[LAST_SIGNAL] = { 0 };

extern CamelSession *session;

static void em_folder_tree_class_init (EMFolderTreeClass *klass);
static void em_folder_tree_init (EMFolderTree *emft);
static void em_folder_tree_destroy (GtkObject *obj);
static void em_folder_tree_finalize (GObject *obj);

static gboolean emft_save_state (EMFolderTree *emft);
static void emft_queue_save_state (EMFolderTree *emft);

static void emft_update_model_expanded_state (struct _EMFolderTreePrivate *priv, GtkTreeIter *iter, gboolean expanded);

static void emft_model_row_changed (GtkTreeModel *model, GtkTreePath *path, GtkTreeIter *iter, EMFolderTree *emft);
static void emft_tree_row_activated (GtkTreeView *treeview, GtkTreePath *path, GtkTreeViewColumn *column, EMFolderTree *emft);
static gboolean emft_tree_test_collapse_row (GtkTreeView *treeview, GtkTreeIter *root, GtkTreePath *path, EMFolderTree *emft);
static void emft_tree_row_expanded (GtkTreeView *treeview, GtkTreeIter *root, GtkTreePath *path, EMFolderTree *emft);
static gboolean emft_tree_button_press (GtkTreeView *treeview, GdkEventButton *event, EMFolderTree *emft);
static void emft_tree_selection_changed (GtkTreeSelection *selection, EMFolderTree *emft);
static gboolean emft_tree_user_event (GtkTreeView *treeview, GdkEvent *e, EMFolderTree *emft);
static gboolean emft_popup_menu (GtkWidget *widget);

struct _emft_selection_data {
	GtkTreeModel *model;
	GtkTreeIter *iter;
	gboolean set;
};

static GtkVBoxClass *parent_class = NULL;

GType
em_folder_tree_get_type (void)
{
	static GType type = 0;
	
	if (!type) {
		static const GTypeInfo info = {
			sizeof (EMFolderTreeClass),
			NULL, /* base_class_init */
			NULL, /* base_class_finalize */
			(GClassInitFunc) em_folder_tree_class_init,
			NULL, /* class_finalize */
			NULL, /* class_data */
			sizeof (EMFolderTree),
			0,    /* n_preallocs */
			(GInstanceInitFunc) em_folder_tree_init,
		};
		
		type = g_type_register_static (GTK_TYPE_VBOX, "EMFolderTree", &info, 0);
	}
	
	return type;
}

static void
em_folder_tree_class_init (EMFolderTreeClass *klass)
{
	GObjectClass *object_class = G_OBJECT_CLASS (klass);
	GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (klass);
	GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
	
	parent_class = g_type_class_ref (GTK_TYPE_VBOX);
	
	object_class->finalize = em_folder_tree_finalize;
	gtk_object_class->destroy = em_folder_tree_destroy;

	widget_class->popup_menu = emft_popup_menu;
	
	signals[FOLDER_SELECTED] =
		g_signal_new ("folder-selected",
			      G_OBJECT_CLASS_TYPE (object_class),
			      G_SIGNAL_RUN_FIRST,
			      G_STRUCT_OFFSET (EMFolderTreeClass, folder_selected),
			      NULL, NULL,
			      em_marshal_VOID__STRING_STRING_UINT,
			      G_TYPE_NONE, 3,
			      G_TYPE_STRING,
			      G_TYPE_STRING,
			      G_TYPE_UINT);
	
	signals[FOLDER_ACTIVATED] =
		g_signal_new ("folder-activated",
			      G_OBJECT_CLASS_TYPE (object_class),
			      G_SIGNAL_RUN_FIRST,
			      G_STRUCT_OFFSET (EMFolderTreeClass, folder_activated),
			      NULL, NULL,
			      em_marshal_VOID__STRING_STRING,
			      G_TYPE_NONE, 2,
			      G_TYPE_STRING,
			      G_TYPE_STRING);
}

static gboolean
subdirs_contain_unread (GtkTreeModel *model, GtkTreeIter *root)
{
	unsigned int unread;
	GtkTreeIter iter;
	
	if (!gtk_tree_model_iter_children (model, &iter, root))
		return FALSE;
	
	do {
		gtk_tree_model_get (model, &iter, COL_UINT_UNREAD, &unread, -1);
		if (unread)
			return TRUE;
		
		if (gtk_tree_model_iter_has_child (model, &iter))
			if (subdirs_contain_unread (model, &iter))
				return TRUE;
	} while (gtk_tree_model_iter_next (model, &iter));
	
	return FALSE;
}


enum {
	FOLDER_ICON_NORMAL,
	FOLDER_ICON_INBOX,
	FOLDER_ICON_OUTBOX,
	FOLDER_ICON_TRASH,
	FOLDER_ICON_JUNK,
	FOLDER_ICON_SHARED_TO_ME,
	FOLDER_ICON_SHARED_BY_ME,
	FOLDER_ICON_SENT,
	FOLDER_ICON_LAST
};

static GdkPixbuf *folder_icons[FOLDER_ICON_LAST];

static void
render_pixbuf (GtkTreeViewColumn *column, GtkCellRenderer *renderer,
	       GtkTreeModel *model, GtkTreeIter *iter, gpointer user_data)
{
	static gboolean initialised = FALSE;
	GdkPixbuf *pixbuf = NULL;
	gboolean is_store;
	guint32 flags;
	
	if (!initialised) {
		folder_icons[FOLDER_ICON_NORMAL] = e_icon_factory_get_icon ("stock_folder", E_ICON_SIZE_MENU);
		folder_icons[FOLDER_ICON_INBOX] = e_icon_factory_get_icon ("stock_inbox", E_ICON_SIZE_MENU);
		folder_icons[FOLDER_ICON_OUTBOX] = e_icon_factory_get_icon ("stock_outbox", E_ICON_SIZE_MENU);
		folder_icons[FOLDER_ICON_TRASH] = e_icon_factory_get_icon ("gnome-fs-trash-empty", E_ICON_SIZE_MENU);
		folder_icons[FOLDER_ICON_JUNK] = e_icon_factory_get_icon ("stock_spam", E_ICON_SIZE_MENU);
		folder_icons[FOLDER_ICON_SHARED_TO_ME] = e_icon_factory_get_icon ("stock_shared-to-me", E_ICON_SIZE_MENU);
		folder_icons[FOLDER_ICON_SHARED_BY_ME] = e_icon_factory_get_icon ("stock_shared-by-me", E_ICON_SIZE_MENU);
		folder_icons[FOLDER_ICON_SENT] = e_icon_factory_get_icon ("stock_sent-mail", E_ICON_SIZE_MENU);
		
		initialised = TRUE;
	}
	
	gtk_tree_model_get (model, iter, COL_BOOL_IS_STORE, &is_store, COL_UINT_FLAGS, &flags, -1);

	if (!is_store) {
		switch((flags & CAMEL_FOLDER_TYPE_MASK)) {
		case CAMEL_FOLDER_TYPE_INBOX:
			pixbuf = folder_icons[FOLDER_ICON_INBOX];
			break;
		case CAMEL_FOLDER_TYPE_OUTBOX:
			pixbuf = folder_icons[FOLDER_ICON_OUTBOX];
			break;
		case CAMEL_FOLDER_TYPE_TRASH:
			pixbuf = folder_icons[FOLDER_ICON_TRASH];
			break;
		case CAMEL_FOLDER_TYPE_JUNK:
			pixbuf = folder_icons[FOLDER_ICON_JUNK];
			break;
		case CAMEL_FOLDER_TYPE_SENT:
			pixbuf = folder_icons[FOLDER_ICON_SENT];
			break;
		default:
			if (flags & CAMEL_FOLDER_SHARED_TO_ME) 
				pixbuf = folder_icons[FOLDER_ICON_SHARED_TO_ME];
			else if (flags & CAMEL_FOLDER_SHARED_BY_ME) 
				pixbuf = folder_icons[FOLDER_ICON_SHARED_BY_ME];
			else
				pixbuf = folder_icons[FOLDER_ICON_NORMAL];
		}
	}
		
	g_object_set (renderer, "pixbuf", pixbuf, "visible", !is_store, NULL);
}

static void
render_display_name (GtkTreeViewColumn *column, GtkCellRenderer *renderer,
		     GtkTreeModel *model, GtkTreeIter *iter, gpointer user_data)
{
	gboolean is_store, bold;
	unsigned int unread;
	char *display;
	char *name;
	
	gtk_tree_model_get (model, iter, COL_STRING_DISPLAY_NAME, &name,
			    COL_BOOL_IS_STORE, &is_store,
			    COL_UINT_UNREAD, &unread, -1);
	
	if (!(bold = is_store || unread)) {
		if (gtk_tree_model_iter_has_child (model, iter))
			bold = subdirs_contain_unread (model, iter);
	}
	
	if (!is_store && unread) {
		/* Translators: This is the string used for displaying the
		 * folder names in folder trees. "%s" will be replaced by
		 * the folder's name and "%u" will be replaced with the
		 * number of unread messages in the folder.
		 *
		 * Most languages should translate this as "%s (%u)". The
		 * languages that use localized digits (like Persian) may
		 * need to replace "%u" with "%Iu". Right-to-left languages
		 * (like Arabic and Hebrew) may need to add bidirectional
		 * formatting codes to take care of the cases the folder
		 * name appears in either direction.
		 *
		 * Do not translate the "folder-display|" part. Remove it
		 * from your translation.
		 */
		display = g_strdup_printf (Q_("folder-display|%s (%u)"), name, unread);
		g_free (name);
	} else
		display = name;
	
	g_object_set (renderer, "text", display,
		      "weight", bold ? PANGO_WEIGHT_BOLD : PANGO_WEIGHT_NORMAL,
		      NULL);
	
	g_free (display);
}

static gboolean
emft_select_func(GtkTreeSelection *selection, GtkTreeModel *model, GtkTreePath *path, gboolean selected, gpointer data)
{
	EMFolderTree *emft = data;
	gboolean is_store;
	guint32 flags;
	GtkTreeIter iter;

	/* NB: This will be called with selection==NULL from tree_row_activated */
	if (emft->priv->excluded == 0 && emft->priv->excluded_func == NULL)
		return TRUE;

	if (!gtk_tree_model_get_iter(model, &iter, path))
		return TRUE;

	if (emft->priv->excluded_func != NULL)
		return emft->priv->excluded_func(emft, model, &iter, emft->priv->excluded_data);

	gtk_tree_model_get(model, &iter, COL_UINT_FLAGS, &flags, COL_BOOL_IS_STORE, &is_store, -1);
	if (is_store)
		flags |= CAMEL_FOLDER_NOSELECT;

	return (flags & emft->priv->excluded) == 0;
}

static void
emft_free_select_uri(void *v, void *data)
{
	struct _selected_uri *u = v;

	g_free(u->uri);
	if (u->store)
		camel_object_unref(u->store);
	g_free(u->key);
	g_free(u->path);
	g_free(u);
}

static void
em_folder_tree_init (EMFolderTree *emft)
{
	struct _EMFolderTreePrivate *priv;
	
	priv = g_new0 (struct _EMFolderTreePrivate, 1);
	priv->select_uris_table = g_hash_table_new(g_str_hash, g_str_equal);
	priv->treeview = NULL;
	priv->model = NULL;
	priv->drag_row = NULL;

	emft->priv = priv;
}

static void
em_folder_tree_finalize (GObject *obj)
{
	EMFolderTree *emft = (EMFolderTree *) obj;

	if (emft->priv->select_uris) {
		g_slist_foreach(emft->priv->select_uris, emft_free_select_uri, emft);
		g_slist_free(emft->priv->select_uris);
		g_hash_table_destroy(emft->priv->select_uris_table);
		emft->priv->select_uris = NULL;
	}

	g_free (emft->priv);
	
	G_OBJECT_CLASS (parent_class)->finalize (obj);
}

static void
em_folder_tree_destroy (GtkObject *obj)
{
	EMFolderTree *emft = (EMFolderTree *) obj;
	struct _EMFolderTreePrivate *priv = emft->priv;
	
	if (priv->loading_row_id != 0) {
		g_signal_handler_disconnect (priv->model, priv->loading_row_id);
		priv->loading_row_id = 0;
	}
	
	if (priv->loaded_row_id != 0) {
		g_signal_handler_disconnect (priv->model, priv->loaded_row_id);
		priv->loaded_row_id = 0;
	}
	
	if (priv->save_state_id != 0) {
		g_source_remove (priv->save_state_id);
		emft_save_state (emft);
	}
	
	if (priv->autoscroll_id != 0) {
		g_source_remove (priv->autoscroll_id);
		priv->autoscroll_id = 0;
	}
	
	if (priv->autoexpand_id != 0) {
		gtk_tree_row_reference_free (priv->autoexpand_row);
		priv->autoexpand_row = NULL;
		
		g_source_remove (priv->autoexpand_id);
		priv->autoexpand_id = 0;
	}
	
	priv->treeview = NULL;
	priv->model = NULL;
	
	GTK_OBJECT_CLASS (parent_class)->destroy (obj);
}

static GtkTreeView *
folder_tree_new (EMFolderTree *emft, EMFolderTreeModel *model)
{
	GtkTreeSelection *selection;
	GtkTreeViewColumn *column;
	GtkCellRenderer *renderer;
	GtkWidget *tree;
	gboolean side_bar_search;
	GConfClient *gconf;

	gconf = mail_config_get_gconf_client ();	
	side_bar_search = gconf_client_get_bool (gconf, "/apps/evolution/mail/display/side_bar_search", NULL);
	
	tree = gtk_tree_view_new_with_model ((GtkTreeModel *) model);
	GTK_WIDGET_SET_FLAGS(tree, GTK_CAN_FOCUS);
	
	column = gtk_tree_view_column_new ();
	gtk_tree_view_append_column ((GtkTreeView *) tree, column);
	
	renderer = gtk_cell_renderer_pixbuf_new ();
	gtk_tree_view_column_pack_start (column, renderer, FALSE);
	gtk_tree_view_column_set_cell_data_func (column, renderer, render_pixbuf, NULL, NULL);
	
	renderer = gtk_cell_renderer_text_new ();
	g_object_set (G_OBJECT (renderer), "ellipsize", PANGO_ELLIPSIZE_END, NULL);
	gtk_tree_view_column_pack_start (column, renderer, TRUE);
	gtk_tree_view_column_set_cell_data_func (column, renderer, render_display_name, NULL, NULL);
	
	selection = gtk_tree_view_get_selection ((GtkTreeView *) tree);
	gtk_tree_selection_set_mode (selection, GTK_SELECTION_SINGLE);
	gtk_tree_selection_set_select_function(selection, emft_select_func, emft, NULL);
	gtk_tree_view_set_headers_visible ((GtkTreeView *) tree, FALSE);

	gtk_tree_view_set_search_column((GtkTreeView *)tree, COL_STRING_DISPLAY_NAME);
	gtk_tree_view_set_enable_search((GtkTreeView *)tree, side_bar_search);

	return (GtkTreeView *) tree;
}

static void
em_folder_tree_construct (EMFolderTree *emft, EMFolderTreeModel *model)
{
	struct _EMFolderTreePrivate *priv = emft->priv;
	GtkTreeSelection *selection;
	GtkWidget *scrolled;
	
	scrolled = gtk_scrolled_window_new (NULL, NULL);
	gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled),
					GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
	gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled), GTK_SHADOW_IN);
	
	priv->model = model;
	priv->treeview = folder_tree_new (emft, model);
	gtk_widget_show ((GtkWidget *) priv->treeview);
	
	g_signal_connect (priv->model, "row-changed", G_CALLBACK (emft_model_row_changed), emft);
	g_signal_connect (priv->treeview, "row-expanded", G_CALLBACK (emft_tree_row_expanded), emft);
	g_signal_connect (priv->treeview, "test-collapse-row", G_CALLBACK (emft_tree_test_collapse_row), emft);
	g_signal_connect (priv->treeview, "row-activated", G_CALLBACK (emft_tree_row_activated), emft);
	g_signal_connect (priv->treeview, "button-press-event", G_CALLBACK (emft_tree_button_press), emft);
	g_signal_connect (priv->treeview, "key-press-event", G_CALLBACK (emft_tree_user_event), emft);
	
	selection = gtk_tree_view_get_selection ((GtkTreeView *) priv->treeview);
	g_signal_connect (selection, "changed", G_CALLBACK (emft_tree_selection_changed), emft);
	
	gtk_container_add ((GtkContainer *) scrolled, (GtkWidget *) priv->treeview);
	gtk_widget_show (scrolled);
	
	gtk_box_pack_start ((GtkBox *) emft, scrolled, TRUE, TRUE, 0);
}

GtkWidget *
em_folder_tree_new (void)
{
	EMFolderTreeModel *model;
	EMFolderTree *emft;
	
	model = em_folder_tree_model_new (mail_component_peek_base_directory (mail_component_peek ()));
	emft = (EMFolderTree *) em_folder_tree_new_with_model (model);
	g_object_unref (model);
	
	return (GtkWidget *) emft;
}

/* NOTE: Removes and frees the selected uri structure */
static void 
emft_select_uri(EMFolderTree *emft, GtkTreePath *path, struct _selected_uri *u)
{
	struct _EMFolderTreePrivate *priv = emft->priv;
	GtkTreeSelection *selection;

	selection = gtk_tree_view_get_selection(priv->treeview);
	gtk_tree_selection_select_path(selection, path);
	if (!priv->cursor_set) {
		gtk_tree_view_set_cursor (priv->treeview, path, NULL, FALSE);
		priv->cursor_set = TRUE;
	}
	gtk_tree_view_scroll_to_cell (priv->treeview, path, NULL, TRUE, 0.8f, 0.0f);
	g_hash_table_remove(priv->select_uris_table, u->key);
	priv->select_uris = g_slist_remove(priv->select_uris, u);
	emft_free_select_uri((void *)u, NULL);
}

static void
emft_expand_node (EMFolderTreeModel *model, const char *key, EMFolderTree *emft)
{
	struct _EMFolderTreePrivate *priv = emft->priv;
	struct _EMFolderTreeModelStoreInfo *si;
	extern CamelStore *vfolder_store;
	GtkTreeRowReference *row;
	GtkTreePath *path;
	EAccount *account;
	CamelStore *store;
	const char *p;
	char *uid;
	size_t n;
	struct _selected_uri *u;

	if (!(p = strchr (key, '/')))
		n = strlen (key);
	else
		n = (p - key);
	
	uid = g_alloca (n + 1);
	memcpy (uid, key, n);
	uid[n] = '\0';
	
	if ((account = mail_config_get_account_by_uid (uid)) && account->enabled) {
		CamelException ex;
		
		camel_exception_init (&ex);
		store = (CamelStore *) camel_session_get_service (session, account->source->url, CAMEL_PROVIDER_STORE, &ex);
		camel_exception_clear (&ex);
		
		if (store == NULL)
			return;
	} else if (!strcmp (uid, "vfolder")) {
		if (!(store = vfolder_store))
			return;
		
		camel_object_ref (store);
	} else if (!strcmp (uid, "local")) {
		if (!(store = mail_component_peek_local_store (NULL)))
			return;
		
		camel_object_ref (store);
	} else {
		return;
	}
	
	if (!(si = g_hash_table_lookup (priv->model->store_hash, store))) {
		camel_object_unref (store);
		return;
	}
	
	camel_object_unref (store);
	
	if (p != NULL) {
		if (!(row = g_hash_table_lookup (si->full_hash, p + 1)))
			return;
	} else
		row = si->row;
	
	path = gtk_tree_row_reference_get_path (row);
	gtk_tree_view_expand_row (priv->treeview, path, FALSE);

	u = g_hash_table_lookup(emft->priv->select_uris_table, key);
	if (u)
		emft_select_uri(emft, path, u);

	gtk_tree_path_free (path);
}

static void
emft_maybe_expand_row (EMFolderTreeModel *model, GtkTreePath *tree_path, GtkTreeIter *iter, EMFolderTree *emft)
{
	struct _EMFolderTreePrivate *priv = emft->priv;
	struct _EMFolderTreeModelStoreInfo *si;
	gboolean is_store;
	CamelStore *store;
	EAccount *account;
	char *full_name;
	char *key;
	struct _selected_uri *u;

	gtk_tree_model_get ((GtkTreeModel *) model, iter,
			    COL_STRING_FULL_NAME, &full_name,
			    COL_POINTER_CAMEL_STORE, &store,
			    COL_BOOL_IS_STORE, &is_store,
			    -1);
	
	si = g_hash_table_lookup (model->store_hash, store);
	if ((account = mail_config_get_account_by_name (si->display_name))) {
	        key = g_strdup_printf ("%s/%s", account->uid, full_name ? full_name : "");
	} else if (CAMEL_IS_VEE_STORE (store)) {
		/* vfolder store */
		key = g_strdup_printf ("vfolder/%s", full_name ? full_name : "");
	} else {
		/* local store */
		key = g_strdup_printf ("local/%s", full_name ? full_name : "");
	}

	u = g_hash_table_lookup(priv->select_uris_table, key);
	if (em_folder_tree_model_get_expanded (model, key) || u) {
		gtk_tree_view_expand_to_path (priv->treeview, tree_path);
		gtk_tree_view_expand_row (priv->treeview, tree_path, FALSE);

		if (u)
			emft_select_uri(emft, tree_path, u);
	}

	g_free (full_name);
	g_free (key);
}

GtkWidget *
em_folder_tree_new_with_model (EMFolderTreeModel *model)
{
	EMFolderTree *emft;
	AtkObject *a11y;
	
	emft = g_object_new (EM_TYPE_FOLDER_TREE, NULL);
	em_folder_tree_construct (emft, model);
	g_object_ref (model);
	
	em_folder_tree_model_expand_foreach (model, (EMFTModelExpandFunc)emft_expand_node, emft);
	
	emft->priv->loading_row_id = g_signal_connect (model, "loading-row", G_CALLBACK (emft_maybe_expand_row), emft);
	emft->priv->loaded_row_id = g_signal_connect (model, "loaded-row", G_CALLBACK (emft_maybe_expand_row), emft);

	a11y = gtk_widget_get_accessible (GTK_WIDGET (emft->priv->treeview));
	atk_object_set_name (a11y, _("Mail Folder Tree"));
	
	return (GtkWidget *) emft;
}

static void
tree_drag_begin (GtkWidget *widget, GdkDragContext *context, EMFolderTree *emft)
{
	struct _EMFolderTreePrivate *priv = emft->priv;
	GtkTreeSelection *selection;
	GtkTreeModel *model;
	GtkTreePath *path;
	GtkTreeIter iter;
	
	selection = gtk_tree_view_get_selection ((GtkTreeView *) widget);
	if (!gtk_tree_selection_get_selected (selection, &model, &iter))
		return;
	
	path = gtk_tree_model_get_path (model, &iter);
	priv->drag_row = gtk_tree_row_reference_new (model, path);
	gtk_tree_path_free (path);
	
	/* FIXME: set a drag icon? */
}

static void
tree_drag_data_delete(GtkWidget *widget, GdkDragContext *context, EMFolderTree *emft)
{
	struct _EMFolderTreePrivate *priv = emft->priv;
	char *full_name = NULL;
	GtkTreePath *src_path;
	gboolean is_store;
	CamelStore *store;
	CamelException ex;
	GtkTreeIter iter;
	
	if (!priv->drag_row || (src_path = gtk_tree_row_reference_get_path (priv->drag_row)))
		return;
	
	if (!gtk_tree_model_get_iter((GtkTreeModel *)priv->model, &iter, src_path))
		goto fail;

	gtk_tree_model_get((GtkTreeModel *)priv->model, &iter,
			   COL_POINTER_CAMEL_STORE, &store,
			   COL_STRING_FULL_NAME, &full_name,
			   COL_BOOL_IS_STORE, &is_store, -1);
	
	if (is_store)
		goto fail;
	
	camel_exception_init(&ex);
	camel_store_delete_folder(store, full_name, &ex);
	if (camel_exception_is_set(&ex))
		camel_exception_clear(&ex);
fail:
	gtk_tree_path_free(src_path);
	g_free (full_name);
}

static void
tree_drag_data_get(GtkWidget *widget, GdkDragContext *context, GtkSelectionData *selection, guint info, guint time, EMFolderTree *emft)
{
	struct _EMFolderTreePrivate *priv = emft->priv;
	char *full_name = NULL, *uri = NULL;
	GtkTreePath *src_path;
	CamelFolder *folder;
	CamelStore *store;
	CamelException ex;
	GtkTreeIter iter;
	
	if (!priv->drag_row || !(src_path = gtk_tree_row_reference_get_path(priv->drag_row)))
		return;
	
	if (!gtk_tree_model_get_iter((GtkTreeModel *)priv->model, &iter, src_path))
		goto fail;
	
	gtk_tree_model_get((GtkTreeModel *)priv->model, &iter,
			   COL_POINTER_CAMEL_STORE, &store,
			   COL_STRING_FULL_NAME, &full_name,
			   COL_STRING_URI, &uri, -1);
	
	/* make sure user isn't trying to drag on a placeholder row */
	if (full_name == NULL)
		goto fail;
	
	camel_exception_init(&ex);
	
	switch (info) {
	case DND_DRAG_TYPE_FOLDER:
		/* dragging to a new location in the folder tree */
		gtk_selection_data_set(selection, drag_atoms[info], 8, (unsigned char *)uri, strlen (uri) + 1);
		break;
	case DND_DRAG_TYPE_TEXT_URI_LIST:
		/* dragging to nautilus or something, probably */
		if ((folder = camel_store_get_folder(store, full_name, 0, &ex))) {
			GPtrArray *uids = camel_folder_get_uids(folder);
			
			em_utils_selection_set_urilist(selection, folder, uids);
			camel_folder_free_uids(folder, uids);
			camel_object_unref(folder);
		}
		break;
	default:
		abort();
	}
	
	if (camel_exception_is_set(&ex))
		camel_exception_clear(&ex);
fail:
	gtk_tree_path_free(src_path);
	g_free (full_name);
	g_free (uri);
}

/* TODO: Merge the drop handling code/menu's into one spot using a popup target for details */
/* Drop handling */
struct _DragDataReceivedAsync {
	struct _mail_msg msg;
	
	/* input data */
	GdkDragContext *context;

	/* Only selection->data and selection->length are valid */
	GtkSelectionData *selection;

	CamelStore *store;
	char *full_name;
	guint32 action;
	guint info;
	
	unsigned int move:1;
	unsigned int moved:1;
	unsigned int aborted:1;
};

static void
emft_drop_folder(struct _DragDataReceivedAsync *m)
{
	CamelFolder *src;

	d(printf(" * Drop folder '%s' onto '%s'\n", m->selection->data, m->full_name));

	if (!(src = mail_tool_uri_to_folder((char *)m->selection->data, 0, &m->msg.ex)))
		return;

	em_folder_utils_copy_folders(src->parent_store, src->full_name, m->store, m->full_name?m->full_name:"", m->move);
	camel_object_unref(src);
}

static char *
emft_drop_async_desc (struct _mail_msg *mm, int done)
{
	struct _DragDataReceivedAsync *m = (struct _DragDataReceivedAsync *) mm;
	CamelURL *url;
	char *buf;
	
	if (m->info == DND_DROP_TYPE_FOLDER) {
		url = camel_url_new ((char *)m->selection->data, NULL);
		
		if (m->move)
			buf = g_strdup_printf (_("Moving folder %s"), url->fragment ? url->fragment : url->path + 1);
		else
			buf = g_strdup_printf (_("Copying folder %s"), url->fragment ? url->fragment : url->path + 1);
		
		camel_url_free (url);
		
		return buf;
	} else {
		if (m->move)
			return g_strdup_printf (_("Moving messages into folder %s"), m->full_name);
		else
			return g_strdup_printf (_("Copying messages into folder %s"), m->full_name);
	}
}

static void
emft_drop_async_drop (struct _mail_msg *mm)
{
	struct _DragDataReceivedAsync *m = (struct _DragDataReceivedAsync *) mm;
	CamelFolder *folder;
	
	/* for types other than folder, we can't drop to the root path */
	if (m->info == DND_DROP_TYPE_FOLDER) {
		/* copy or move (aka rename) a folder */
		emft_drop_folder(m);
	} else if (m->full_name == NULL) {
		camel_exception_set (&mm->ex, CAMEL_EXCEPTION_SYSTEM,
				     _("Cannot drop message(s) into toplevel store"));
	} else if ((folder = camel_store_get_folder (m->store, m->full_name, 0, &mm->ex))) {
		switch (m->info) {
		case DND_DROP_TYPE_UID_LIST:
			/* import a list of uids from another evo folder */
			em_utils_selection_get_uidlist(m->selection, folder, m->move, &mm->ex);
			m->moved = m->move && !camel_exception_is_set(&mm->ex);
			break;
		case DND_DROP_TYPE_MESSAGE_RFC822:
			/* import a message/rfc822 stream */
			em_utils_selection_get_message(m->selection, folder);
			break;
		case DND_DROP_TYPE_TEXT_URI_LIST:
			/* import an mbox, maildir, or mh folder? */
			em_utils_selection_get_mailbox(m->selection, folder);
			break;
		default:
			abort();
		}
		camel_object_unref(folder);
	}
}

static void
emft_drop_async_free (struct _mail_msg *mm)
{
	struct _DragDataReceivedAsync *m = (struct _DragDataReceivedAsync *) mm;
	
	g_object_unref(m->context);
	camel_object_unref(m->store);
	g_free(m->full_name);

	g_free(m->selection->data);
	g_free(m->selection);
}

static struct _mail_msg_op emft_drop_async_op = {
	emft_drop_async_desc,
	emft_drop_async_drop,
	NULL,
	emft_drop_async_free,
};

static void
tree_drag_data_action(struct _DragDataReceivedAsync *m)
{
	m->move = m->action == GDK_ACTION_MOVE;
	e_thread_put (mail_thread_new, (EMsg *) m);
}

static void
emft_drop_popup_copy(EPopup *ep, EPopupItem *item, void *data)
{
	struct _DragDataReceivedAsync *m = data;

	m->action = GDK_ACTION_COPY;
	tree_drag_data_action(m);
}

static void
emft_drop_popup_move(EPopup *ep, EPopupItem *item, void *data)
{
	struct _DragDataReceivedAsync *m = data;

	m->action = GDK_ACTION_MOVE;
	tree_drag_data_action(m);
}

static void
emft_drop_popup_cancel(EPopup *ep, EPopupItem *item, void *data)
{
	struct _DragDataReceivedAsync *m = data;

	m->aborted = TRUE;
	mail_msg_free(&m->msg);
}

static EPopupItem emft_drop_popup_menu[] = {
	{ E_POPUP_ITEM, "00.emc.00", N_("_Copy to Folder"), emft_drop_popup_copy, NULL, NULL, 1 },
	{ E_POPUP_ITEM, "00.emc.01", N_("_Move to Folder"), emft_drop_popup_move, NULL, NULL, 1 },
	{ E_POPUP_ITEM, "00.emc.02", N_("_Copy"), emft_drop_popup_copy, NULL, "stock_folder-copy", 2 },
	{ E_POPUP_ITEM, "00.emc.03", N_("_Move"), emft_drop_popup_move, NULL, "stock_folder-move", 2 },
	{ E_POPUP_BAR, "10.emc" },
	{ E_POPUP_ITEM, "99.emc.00", N_("Cancel _Drag"), emft_drop_popup_cancel, NULL, "stock_cancel", 0 },
};

static void
emft_drop_popup_free(EPopup *ep, GSList *items, void *data)
{
	g_slist_free(items);
}

static void
tree_drag_data_received(GtkWidget *widget, GdkDragContext *context, int x, int y, GtkSelectionData *selection, guint info, guint time, EMFolderTree *emft)
{
	struct _EMFolderTreePrivate *priv = emft->priv;
	GtkTreeViewDropPosition pos;
	GtkTreePath *dest_path;
	struct _DragDataReceivedAsync *m;
	gboolean is_store;
	CamelStore *store;
	GtkTreeIter iter;
	char *full_name;
	int i;

	if (!gtk_tree_view_get_dest_row_at_pos (priv->treeview, x, y, &dest_path, &pos))
		return;
	
	/* this means we are receiving no data */
	if (!selection->data || selection->length == -1) {
		gtk_drag_finish(context, FALSE, FALSE, GDK_CURRENT_TIME);
		return;
	}
	
	if (!gtk_tree_model_get_iter((GtkTreeModel *)priv->model, &iter, dest_path)) {
		gtk_drag_finish(context, FALSE, FALSE, GDK_CURRENT_TIME);
		return;
	}
	
	gtk_tree_model_get((GtkTreeModel *)priv->model, &iter,
			   COL_POINTER_CAMEL_STORE, &store,
			   COL_BOOL_IS_STORE, &is_store,
			   COL_STRING_FULL_NAME, &full_name, -1);
	
	/* make sure user isn't try to drop on a placeholder row */
	if (full_name == NULL && !is_store) {
		gtk_drag_finish (context, FALSE, FALSE, GDK_CURRENT_TIME);
		return;
	}

	m = mail_msg_new (&emft_drop_async_op, NULL, sizeof (struct _DragDataReceivedAsync));
	m->context = context;
	g_object_ref(context);
	m->store = store;
	camel_object_ref(store);
	m->full_name = full_name;
	m->action = context->action;
	m->info = info;

	/* need to copy, goes away once we exit */
	m->selection = g_malloc0(sizeof(*m->selection));
	m->selection->data = g_malloc(selection->length);
	memcpy(m->selection->data, selection->data, selection->length);
	m->selection->length = selection->length;

	if (context->action == GDK_ACTION_ASK) {
		EMPopup *emp;
		int mask;
		GSList *menus = NULL;
		GtkMenu *menu;

		emp = em_popup_new("org.gnome.mail.storageset.popup.drop");
		if (info != DND_DROP_TYPE_FOLDER)
			mask = ~1;
		else
			mask = ~2;

		for (i=0;i<sizeof(emft_drop_popup_menu)/sizeof(emft_drop_popup_menu[0]);i++) {
			EPopupItem *item = &emft_drop_popup_menu[i];

			if ((item->visible & mask) == 0)
				menus = g_slist_append(menus, item);
		}
		e_popup_add_items((EPopup *)emp, menus, NULL, emft_drop_popup_free, m);
		menu = e_popup_create_menu_once((EPopup *)emp, NULL, mask);
		gtk_menu_popup(menu, NULL, NULL, NULL, NULL, 0, gtk_get_current_event_time());
	} else {
		tree_drag_data_action(m);
	}
}

static gboolean
is_special_local_folder (const char *name)
{
	return (!strcmp (name, "Drafts") || !strcmp (name, "Inbox") || !strcmp (name, "Outbox") || !strcmp (name, "Sent"));
}

static GdkAtom
emft_drop_target(EMFolderTree *emft, GdkDragContext *context, GtkTreePath *path)
{
	struct _EMFolderTreePrivate *p = emft->priv;
	char *full_name = NULL, *uri = NULL, *src_uri = NULL;
	CamelStore *local, *sstore, *dstore;
	GdkAtom atom = GDK_NONE;
	gboolean is_store;
	GtkTreeIter iter;
	GList *targets;
	
	/* This is a bit of a mess, but should handle all the cases properly */

	if (!gtk_tree_model_get_iter((GtkTreeModel *)p->model, &iter, path))
		return GDK_NONE;
	
	gtk_tree_model_get((GtkTreeModel *)p->model, &iter, COL_BOOL_IS_STORE, &is_store,
			   COL_STRING_FULL_NAME, &full_name,
			   COL_POINTER_CAMEL_STORE, &dstore,
			   COL_STRING_URI, &uri, -1);
	
	local = mail_component_peek_local_store (NULL);
	
	targets = context->targets;
	
	/* Check for special destinations */
	if (uri && full_name) {
#if 0
		/* only allow copying/moving folders (not messages) into the local Outbox */
		if (dstore == local && !strcmp (full_name, "Outbox")) {
			GdkAtom xfolder;
			
			xfolder = drop_atoms[DND_DROP_TYPE_FOLDER];
			while (targets != NULL) {
				if (targets->data == (gpointer) xfolder) {
					atom = xfolder;
					goto done;
				}
				
				targets = targets->next;
			}
			
			goto done;
		}
#endif
		
		/* don't allow copying/moving into the UNMATCHED vfolder */
		if (!strncmp (uri, "vfolder:", 8) && !strcmp (full_name, CAMEL_UNMATCHED_NAME))
			goto done;
		
		/* don't allow copying/moving into a vTrash/vJunk folder */
		if (!strcmp (full_name, CAMEL_VTRASH_NAME)
		    || !strcmp (full_name, CAMEL_VJUNK_NAME))
			goto done;
	}
	
	if (p->drag_row) {
		GtkTreePath *src_path = gtk_tree_row_reference_get_path(p->drag_row);
		
		if (src_path) {
			if (gtk_tree_model_get_iter((GtkTreeModel *)p->model, &iter, src_path))
				gtk_tree_model_get((GtkTreeModel *)p->model, &iter,
						   COL_POINTER_CAMEL_STORE, &sstore,
						   COL_STRING_URI, &src_uri, -1);
			
			/* can't dnd onto itself or below itself - bad things happen,
			   no point dragging to where we were either */
			if (gtk_tree_path_compare(path, src_path) == 0
			    || gtk_tree_path_is_descendant(path, src_path)
			    || (gtk_tree_path_is_ancestor(path, src_path)
				&& gtk_tree_path_get_depth(path) == gtk_tree_path_get_depth(src_path)-1)) {
				gtk_tree_path_free(src_path);
				goto done;
			}
			
			gtk_tree_path_free(src_path);
		}
	}
	
	/* Check for special sources, and vfolder stuff */
	if (src_uri) {
		CamelURL *url;
		char *url_path;
		
		/* FIXME: this is a total hack, but i think all we can do at present */
		/* Check for dragging from special folders which can't be moved/copied */
		url = camel_url_new(src_uri, NULL);
		url_path = url->fragment?url->fragment:url->path;
		if (url_path && url_path[0]) {
			/* don't allow moving any of the the local special folders */
			if (sstore == local && is_special_local_folder (url_path)) {
				GdkAtom xfolder;
				
				camel_url_free (url);
				
				/* TODO: not sure if this is legal, but it works, force copy for special local folders */
				context->suggested_action = GDK_ACTION_COPY;
				xfolder = drop_atoms[DND_DROP_TYPE_FOLDER];
				while (targets != NULL) {
					if (targets->data == (gpointer) xfolder) {
						atom = xfolder;
						goto done;
					}
					
					targets = targets->next;
				}
				
				goto done;
			}
			
			/* don't allow copying/moving of the UNMATCHED vfolder */
			if (!strcmp (url->protocol, "vfolder") && !strcmp (url_path, CAMEL_UNMATCHED_NAME)) {
				camel_url_free (url);
				goto done;
			}
			
			/* don't allow copying/moving of any vTrash/vJunk folder nor maildir 'inbox' */
			if (strcmp(url_path, CAMEL_VTRASH_NAME) == 0
			    || strcmp(url_path, CAMEL_VJUNK_NAME) == 0
			    /* Dont allow drag from maildir 'inbox' */
			    || strcmp(url_path, ".") == 0) {
				camel_url_free(url);
				goto done;
			}
		}
		camel_url_free(url);
		
		/* Search Folders can only be dropped into other Search Folders */
		if (strncmp(src_uri, "vfolder:", 8) == 0) {
			/* TODO: not sure if this is legal, but it works, force move only for vfolders */
			context->suggested_action = GDK_ACTION_MOVE;

			if (uri && strncmp(uri, "vfolder:", 8) == 0) {
				GdkAtom xfolder;

				xfolder = drop_atoms[DND_DROP_TYPE_FOLDER];
				while (targets != NULL) {
					if (targets->data == (gpointer) xfolder) {
						atom = xfolder;
						goto done;
					}
					
					targets = targets->next;
				}
			}
			
			goto done;
		}
	}

	/* can't drag anything but a vfolder into a vfolder */
	if (uri && strncmp(uri, "vfolder:", 8) == 0)
		goto done;

	/* Now we either have a store or a normal folder */
	
	if (is_store) {
		GdkAtom xfolder;

		xfolder = drop_atoms[DND_DROP_TYPE_FOLDER];
		while (targets != NULL) {
			if (targets->data == (gpointer) xfolder) {
				atom = xfolder;
				goto done;
			}
			
			targets = targets->next;
		}
	} else {
		int i;
		
		while (targets != NULL) {
			for (i = 0; i < NUM_DROP_TYPES; i++) {
				if (targets->data == (gpointer) drop_atoms[i]) {
					atom = drop_atoms[i];
					goto done;
				}
			}
			
			targets = targets->next;
		}
	}
	
 done:
	
	g_free (full_name);
	g_free (uri);
	
	return atom;
}

static gboolean
tree_drag_drop (GtkWidget *widget, GdkDragContext *context, int x, int y, guint time, EMFolderTree *emft)
{
	struct _EMFolderTreePrivate *priv = emft->priv;
	GtkTreeViewColumn *column;
	int cell_x, cell_y;
	GtkTreePath *path;
	GdkAtom target;
	
	if (priv->autoscroll_id != 0) {
		g_source_remove (priv->autoscroll_id);
		priv->autoscroll_id = 0;
	}
	
	if (priv->autoexpand_id != 0) {
		gtk_tree_row_reference_free (priv->autoexpand_row);
		priv->autoexpand_row = NULL;
		
		g_source_remove (priv->autoexpand_id);
		priv->autoexpand_id = 0;
	}
	
	if (!gtk_tree_view_get_path_at_pos (priv->treeview, x, y, &path, &column, &cell_x, &cell_y))
		return FALSE;
	
	target = emft_drop_target(emft, context, path);
	gtk_tree_path_free (path);
	if (target == GDK_NONE)
		return FALSE;
	
	return TRUE;
}

static void
tree_drag_end (GtkWidget *widget, GdkDragContext *context, EMFolderTree *emft)
{
	struct _EMFolderTreePrivate *priv = emft->priv;
	
	if (priv->drag_row) {
		gtk_tree_row_reference_free (priv->drag_row);
		priv->drag_row = NULL;
	}

	/* FIXME: undo anything done in drag-begin */
}

static void
tree_drag_leave (GtkWidget *widget, GdkDragContext *context, guint time, EMFolderTree *emft)
{
	struct _EMFolderTreePrivate *priv = emft->priv;
	
	if (priv->autoscroll_id != 0) {
		g_source_remove (priv->autoscroll_id);
		priv->autoscroll_id = 0;
	}
	
	if (priv->autoexpand_id != 0) {
		gtk_tree_row_reference_free (priv->autoexpand_row);
		priv->autoexpand_row = NULL;
		
		g_source_remove (priv->autoexpand_id);
		priv->autoexpand_id = 0;
	}
	
	gtk_tree_view_set_drag_dest_row(emft->priv->treeview, NULL, GTK_TREE_VIEW_DROP_BEFORE);
}


#define SCROLL_EDGE_SIZE 15

static gboolean
tree_autoscroll (EMFolderTree *emft)
{
	struct _EMFolderTreePrivate *priv = emft->priv;
	GtkAdjustment *vadjustment;
	GdkRectangle rect;
	GdkWindow *window;
	int offset, y;
	float value;
	
	/* get the y pointer position relative to the treeview */
	window = gtk_tree_view_get_bin_window (priv->treeview);
	gdk_window_get_pointer (window, NULL, &y, NULL);
	
	/* rect is in coorinates relative to the scrolled window relative to the treeview */
	gtk_tree_view_get_visible_rect (priv->treeview, &rect);
	
	/* move y into the same coordinate system as rect */
	y += rect.y;
	
	/* see if we are near the top edge */
	if ((offset = y - (rect.y + 2 * SCROLL_EDGE_SIZE)) > 0) {
		/* see if we are near the bottom edge */
		if ((offset = y - (rect.y + rect.height - 2 * SCROLL_EDGE_SIZE)) < 0)
			return TRUE;
	}
	
	vadjustment = gtk_tree_view_get_vadjustment (priv->treeview);
	
	value = CLAMP (vadjustment->value + offset, 0.0, vadjustment->upper - vadjustment->page_size);
	gtk_adjustment_set_value (vadjustment, value);
	
	return TRUE;
}

static gboolean
tree_autoexpand (EMFolderTree *emft)
{
	struct _EMFolderTreePrivate *priv = emft->priv;
	GtkTreePath *path;
	
	path = gtk_tree_row_reference_get_path (priv->autoexpand_row);
	gtk_tree_view_expand_row (priv->treeview, path, FALSE);
	gtk_tree_path_free (path);
	
	return TRUE;
}

static gboolean
tree_drag_motion (GtkWidget *widget, GdkDragContext *context, int x, int y, guint time, EMFolderTree *emft)
{
	struct _EMFolderTreePrivate *priv = emft->priv;
	GtkTreeModel *model = (GtkTreeModel *) priv->model;
	GtkTreeViewDropPosition pos;
	GdkDragAction action = 0;
	GtkTreePath *path;
	GtkTreeIter iter;
	GdkAtom target;
	int i;
	
	if (!gtk_tree_view_get_dest_row_at_pos(priv->treeview, x, y, &path, &pos))
		return FALSE;
	
	if (priv->autoscroll_id == 0)
		priv->autoscroll_id = g_timeout_add (150, (GSourceFunc) tree_autoscroll, emft);
	
	gtk_tree_model_get_iter (model, &iter, path);
	
	if (gtk_tree_model_iter_has_child (model, &iter) && !gtk_tree_view_row_expanded (priv->treeview, path)) {
		if (priv->autoexpand_id != 0) {
			GtkTreePath *autoexpand_path;
			
			autoexpand_path = gtk_tree_row_reference_get_path (priv->autoexpand_row);
			if (gtk_tree_path_compare (autoexpand_path, path) != 0) {
				/* row changed, restart timer */
				gtk_tree_row_reference_free (priv->autoexpand_row);
				priv->autoexpand_row = gtk_tree_row_reference_new (model, path);
				g_source_remove (priv->autoexpand_id);
				priv->autoexpand_id = g_timeout_add (600, (GSourceFunc) tree_autoexpand, emft);
			}
			
			gtk_tree_path_free (autoexpand_path);
		} else {
			priv->autoexpand_id = g_timeout_add (600, (GSourceFunc) tree_autoexpand, emft);
			priv->autoexpand_row = gtk_tree_row_reference_new (model, path);
		}
	} else if (priv->autoexpand_id != 0) {
		gtk_tree_row_reference_free (priv->autoexpand_row);
		priv->autoexpand_row = NULL;
		
		g_source_remove (priv->autoexpand_id);
		priv->autoexpand_id = 0;
	}

	target = emft_drop_target(emft, context, path);
	if (target != GDK_NONE) {
		for (i=0; i<NUM_DROP_TYPES; i++) {
			if (drop_atoms[i] == target) {
				switch (i) {
				case DND_DROP_TYPE_UID_LIST:
				case DND_DROP_TYPE_FOLDER:
					action = context->suggested_action;
					if (action == GDK_ACTION_COPY && (context->actions & GDK_ACTION_MOVE))
						action = GDK_ACTION_MOVE;
					gtk_tree_view_set_drag_dest_row(priv->treeview, path, GTK_TREE_VIEW_DROP_INTO_OR_AFTER);
					break;
				default:
					gtk_tree_view_set_drag_dest_row(priv->treeview, path, GTK_TREE_VIEW_DROP_INTO_OR_AFTER);
					action = context->suggested_action;
					break;
				}
				break;
			}
		}
	}

	gtk_tree_path_free(path);
	
	gdk_drag_status(context, action, time);
	
	return action != 0;
}

void
em_folder_tree_enable_drag_and_drop (EMFolderTree *emft)
{
	struct _EMFolderTreePrivate *priv;
	static int setup = 0;
	int i;
	
	g_return_if_fail (EM_IS_FOLDER_TREE (emft));
	
	priv = emft->priv;
	if (!setup) {
		for (i=0; i<NUM_DRAG_TYPES; i++)
			drag_atoms[i] = gdk_atom_intern(drag_types[i].target, FALSE);
	
		for (i=0; i<NUM_DROP_TYPES; i++)
			drop_atoms[i] = gdk_atom_intern(drop_types[i].target, FALSE);

		setup = 1;
	}

	gtk_drag_source_set((GtkWidget *)priv->treeview, GDK_BUTTON1_MASK, drag_types, NUM_DRAG_TYPES, GDK_ACTION_COPY | GDK_ACTION_MOVE | GDK_ACTION_ASK);
	gtk_drag_dest_set((GtkWidget *)priv->treeview, GTK_DEST_DEFAULT_ALL, drop_types, NUM_DROP_TYPES, GDK_ACTION_COPY | GDK_ACTION_MOVE | GDK_ACTION_ASK);
	
	g_signal_connect (priv->treeview, "drag-begin", G_CALLBACK (tree_drag_begin), emft);
	g_signal_connect (priv->treeview, "drag-data-delete", G_CALLBACK (tree_drag_data_delete), emft);
	g_signal_connect (priv->treeview, "drag-data-get", G_CALLBACK (tree_drag_data_get), emft);
	g_signal_connect (priv->treeview, "drag-data-received", G_CALLBACK (tree_drag_data_received), emft);
	g_signal_connect (priv->treeview, "drag-drop", G_CALLBACK (tree_drag_drop), emft);
	g_signal_connect (priv->treeview, "drag-end", G_CALLBACK (tree_drag_end), emft);
	g_signal_connect (priv->treeview, "drag-leave", G_CALLBACK (tree_drag_leave), emft);
	g_signal_connect (priv->treeview, "drag-motion", G_CALLBACK (tree_drag_motion), emft);
}

void
em_folder_tree_set_multiselect (EMFolderTree *tree, gboolean mode)
{
	GtkTreeSelection *sel = gtk_tree_view_get_selection ((GtkTreeView *) tree->priv->treeview);
	
	tree->priv->do_multiselect = mode;
	gtk_tree_selection_set_mode (sel, mode ? GTK_SELECTION_MULTIPLE : GTK_SELECTION_SINGLE);
}

void em_folder_tree_set_excluded(EMFolderTree *emft, guint32 flags)
{
	emft->priv->excluded = flags;
}

void em_folder_tree_set_excluded_func(EMFolderTree *emft, EMFTExcludeFunc exclude, void *data)
{
	emft->priv->excluded_func = exclude;
	emft->priv->excluded_data = data;
}

GList *
em_folder_tree_get_selected_uris (EMFolderTree *emft)
{
	GtkTreeSelection *selection = gtk_tree_view_get_selection (emft->priv->treeview);
	GList *list = NULL, *rows, *l;
	GSList *sl;
	GtkTreeModel *model;

	/* at first, add lost uris */
	for (sl = emft->priv->select_uris; sl; sl = g_slist_next(sl))
		list = g_list_append (list, g_strdup (((struct _selected_uri *)sl->data)->uri));

	rows = gtk_tree_selection_get_selected_rows(selection, &model);
	for (l=rows; l; l=g_list_next(l)) {
		GtkTreeIter iter;
		GtkTreePath *path = l->data;

		if (gtk_tree_model_get_iter(model, &iter, path)) {
			char *uri;
			
			gtk_tree_model_get(model, &iter, COL_STRING_URI, &uri, -1);
			list = g_list_prepend (list, uri);
		}
		gtk_tree_path_free(path);
	}
	g_list_free(rows);
	
	return g_list_reverse (list);
}

static void
get_selected_uris_path_iterate (GtkTreeModel *model, GtkTreePath *treepath, GtkTreeIter *iter, gpointer data)
{
	GList **list = (GList **) data;
	char *full_name;
	
	gtk_tree_model_get (model, iter, COL_STRING_FULL_NAME, &full_name, -1);
	*list = g_list_append (*list, full_name);
}

GList *
em_folder_tree_get_selected_paths (EMFolderTree *emft)
{
	GtkTreeSelection *selection = gtk_tree_view_get_selection (emft->priv->treeview);
	GList *list = NULL;
	
	gtk_tree_selection_selected_foreach (selection, get_selected_uris_path_iterate, &list);
	
	return list;
}

static void
emft_clear_selected_list(EMFolderTree *emft)
{
	struct _EMFolderTreePrivate *priv = emft->priv;

	g_slist_foreach(priv->select_uris, emft_free_select_uri, emft);
	g_slist_free(priv->select_uris);
	g_hash_table_destroy(priv->select_uris_table);
	priv->select_uris = NULL;
	priv->select_uris_table = g_hash_table_new(g_str_hash, g_str_equal);
	priv->cursor_set = FALSE;
}

void
em_folder_tree_set_selected_list (EMFolderTree *emft, GList *list, gboolean expand_only)
{
	struct _EMFolderTreePrivate *priv = emft->priv;
	int id = 0;

	/* FIXME: need to remove any currently selected stuff? */
	if (!expand_only)
		emft_clear_selected_list(emft);

	for (;list;list = list->next) {
		struct _selected_uri *u = g_malloc0(sizeof(*u));
		CamelURL *url;
		CamelException ex = { 0 };

		u->uri = g_strdup(list->data);
		u->store = (CamelStore *)camel_session_get_service (session, u->uri, CAMEL_PROVIDER_STORE, &ex);
		camel_exception_clear(&ex);

		url = camel_url_new(u->uri, NULL);
		if (u->store == NULL || url == NULL) {
			if (!expand_only) {
				u->key = g_strdup_printf("dummy-%d:%s", id++, u->uri);
				g_hash_table_insert(priv->select_uris_table, u->key, u);
				priv->select_uris = g_slist_append(priv->select_uris, u);
			}
		} else {
			const char *path;
			char *expand_key, *end;
			EAccount *account;
	
			if (((CamelService *)u->store)->provider->url_flags & CAMEL_URL_FRAGMENT_IS_PATH)
				path = url->fragment;
			else
				path = url->path && url->path[0]=='/' ? url->path+1:url->path;
			if (path == NULL)
				path = "";

			/* This makes sure all our parents up to the root are expanded */
			/* FIXME: Why does the expanded state store this made up path rather than the euri? */
			if ( (account = mail_config_get_account_by_source_url(u->uri)) )
				expand_key = g_strdup_printf ("%s/%s", account->uid, path);
			else if (CAMEL_IS_VEE_STORE (u->store))
				expand_key = g_strdup_printf ("vfolder/%s", path);
			else
				expand_key = g_strdup_printf ("local/%s", path);

			if (!expand_only) {
				u->key = g_strdup(expand_key);

				g_hash_table_insert(priv->select_uris_table, u->key, u);
				priv->select_uris = g_slist_append(priv->select_uris, u);
			}

			end = strrchr(expand_key, '/');
			do {
				emft_expand_node(priv->model, expand_key, emft);
				em_folder_tree_model_set_expanded(priv->model, expand_key, TRUE);
				*end = 0;
				end = strrchr(expand_key, '/');
			} while (end);
			g_free(expand_key);
		}

		if (url)
			camel_url_free(url);
	}
}


#if 0
static void
dump_fi (CamelFolderInfo *fi, int depth)
{
	int i;
	
	while (fi != NULL) {
		for (i = 0; i < depth; i++)
			fputs ("  ", stdout);
		
		printf ("path='%s'; full_name='%s'\n", fi->path, fi->full_name);
		
		if (fi->child)
			dump_fi (fi->child, depth + 1);
		
		fi = fi->sibling;
	}
}
#endif

struct _EMFolderTreeGetFolderInfo {
	struct _mail_msg msg;
	
	/* input data */
	GtkTreeRowReference *root;
	EMFolderTree *emft;
	CamelStore *store;
	guint32 flags;
	char *top;
	
	/* output data */
	CamelFolderInfo *fi;
};

static char *
emft_get_folder_info__desc(struct _mail_msg *mm, int done)
{
	struct _EMFolderTreeGetFolderInfo *m = (struct _EMFolderTreeGetFolderInfo *)mm;
	char *ret, *name;

	name = camel_service_get_name((CamelService *)m->store, TRUE);
	ret = g_strdup_printf(_("Scanning folders in \"%s\""), name);
	g_free(name);
	return ret;
}

static void
emft_get_folder_info__get (struct _mail_msg *mm)
{
	struct _EMFolderTreeGetFolderInfo *m = (struct _EMFolderTreeGetFolderInfo *) mm;
	guint32 flags = m->flags | CAMEL_STORE_FOLDER_INFO_SUBSCRIBED;
	
	m->fi = camel_store_get_folder_info (m->store, m->top, flags, &mm->ex);
}

static void
emft_get_folder_info__got (struct _mail_msg *mm)
{
	struct _EMFolderTreeGetFolderInfo *m = (struct _EMFolderTreeGetFolderInfo *) mm;
	struct _EMFolderTreePrivate *priv = m->emft->priv;
	struct _EMFolderTreeModelStoreInfo *si;
	GtkTreeIter root, iter;
	CamelFolderInfo *fi;
	GtkTreeStore *model;
	GtkTreePath *path;
	gboolean is_store;
	
	/* check that we haven't been destroyed */
	if (priv->treeview == NULL)
		return;
	
	/* check that our parent folder hasn't been deleted/unsubscribed */
	if (!gtk_tree_row_reference_valid (m->root))
		return;
	
	if (!(si = g_hash_table_lookup (priv->model->store_hash, m->store))) {
		/* store has been removed in the interim - do nothing */
		return;
	}

	model = (GtkTreeStore *) gtk_tree_view_get_model (priv->treeview);

	path = gtk_tree_row_reference_get_path (m->root);
	gtk_tree_model_get_iter ((GtkTreeModel *) model, &root, path);

	/* if we had an error, then we need to re-set the load subdirs state and collapse the node */
	if (!m->fi && camel_exception_is_set(&mm->ex)) {
		gtk_tree_store_set(model, &root, COL_BOOL_LOAD_SUBDIRS, TRUE, -1);
		gtk_tree_view_collapse_row (priv->treeview, path);
		gtk_tree_path_free (path);
		return;
	}

	gtk_tree_path_free (path);
	
	/* make sure we still need to load the tree subfolders... */
	gtk_tree_model_get ((GtkTreeModel *) model, &root,
			    COL_BOOL_IS_STORE, &is_store,
			    -1);

	/* get the first child (which will be a dummy node) */
	gtk_tree_model_iter_children ((GtkTreeModel *) model, &iter, &root);
	
	/* FIXME: camel's IMAP code is totally on crack here, @top's
	 * folder info should be @fi and fi->child should be what we
	 * want to fill our tree with... *sigh* */
	if (m->top && m->fi && !strcmp (m->fi->full_name, m->top)) {
		if (!(fi = m->fi->child))
			fi = m->fi->next;
	} else
		fi = m->fi;
	
	if (fi == NULL) {
		/* no children afterall... remove the "Loading..." placeholder node */
		emft_update_model_expanded_state (priv, &root, FALSE);
		
		if (is_store) {
			path = gtk_tree_model_get_path ((GtkTreeModel *) model, &root);
			gtk_tree_view_collapse_row (priv->treeview, path);
			emft_queue_save_state (m->emft);
			gtk_tree_path_free (path);
			return;
		} else {
			gtk_tree_store_remove (model, &iter);
		}
	} else {
		int fully_loaded = (m->flags & CAMEL_STORE_FOLDER_INFO_RECURSIVE) ? TRUE : FALSE;
		
		do {
			em_folder_tree_model_set_folder_info (priv->model, &iter, si, fi, fully_loaded);
			
			if ((fi = fi->next) != NULL)
				gtk_tree_store_append (model, &iter, &root);
		} while (fi != NULL);
	}
	
	gtk_tree_store_set (model, &root, COL_BOOL_LOAD_SUBDIRS, FALSE, -1);
	emft_queue_save_state (m->emft);
}

static void
emft_get_folder_info__free (struct _mail_msg *mm)
{
	struct _EMFolderTreeGetFolderInfo *m = (struct _EMFolderTreeGetFolderInfo *) mm;
	
	camel_store_free_folder_info (m->store, m->fi);
	
	gtk_tree_row_reference_free (m->root);
	g_object_unref(m->emft);
	camel_object_unref (m->store);
	g_free (m->top);
}

static struct _mail_msg_op get_folder_info_op = {
	emft_get_folder_info__desc,
	emft_get_folder_info__get,
	emft_get_folder_info__got,
	emft_get_folder_info__free,
};

static void
emft_update_model_expanded_state (struct _EMFolderTreePrivate *priv, GtkTreeIter *iter, gboolean expanded)
{
	struct _EMFolderTreeModelStoreInfo *si;
	gboolean is_store;
	CamelStore *store;
	EAccount *account;
	char *full_name;
	char *key;
	
	gtk_tree_model_get ((GtkTreeModel *) priv->model, iter,
			    COL_STRING_FULL_NAME, &full_name,
			    COL_POINTER_CAMEL_STORE, &store,
			    COL_BOOL_IS_STORE, &is_store,
			    -1);
	
	si = g_hash_table_lookup (priv->model->store_hash, store);
	if ((account = mail_config_get_account_by_name (si->display_name))) {
	        key = g_strdup_printf ("%s/%s", account->uid, full_name ? full_name : "");
	} else if (CAMEL_IS_VEE_STORE (store)) {
		/* vfolder store */
		key = g_strdup_printf ("vfolder/%s", full_name ? full_name : "");
	} else {
		/* local store */
		key = g_strdup_printf ("local/%s", full_name ? full_name : "");
	}
	
	em_folder_tree_model_set_expanded (priv->model, key, expanded);
	g_free (full_name);
	g_free (key);
}

static void
emft_model_row_changed (GtkTreeModel *model, GtkTreePath *path, GtkTreeIter *iter, EMFolderTree *emft)
{
	GtkTreeIter parent_iter;
	GtkTreeIter child_iter = *iter;

	g_signal_handlers_block_by_func (model, emft_model_row_changed, emft);
	
	/* Folders are displayed with a bold weight to indicate that
	   they contain unread messages.  We signal that parent rows
	   have changed here to update them. */

	while (gtk_tree_model_iter_parent (model, &parent_iter, &child_iter)) {
		GtkTreePath *parent_path;

		parent_path = gtk_tree_model_get_path (model, &parent_iter);
		gtk_tree_model_row_changed (model, parent_path, &parent_iter);
		gtk_tree_path_free (parent_path);
		child_iter = parent_iter;
	}
	
	g_signal_handlers_unblock_by_func (model, emft_model_row_changed, emft);
}

static void
emft_tree_row_expanded (GtkTreeView *treeview, GtkTreeIter *root, GtkTreePath *tree_path, EMFolderTree *emft)
{
	struct _EMFolderTreePrivate *priv = emft->priv;
	struct _EMFolderTreeGetFolderInfo *m;
	GtkTreeModel *model;
	CamelStore *store;
	char *full_name;
	gboolean load;
	
	model = gtk_tree_view_get_model (treeview);
	
	gtk_tree_model_get (model, root,
			    COL_STRING_FULL_NAME, &full_name,
			    COL_POINTER_CAMEL_STORE, &store,
			    COL_BOOL_LOAD_SUBDIRS, &load,
			    -1);
	
	emft_update_model_expanded_state (priv, root, TRUE);
	
	if (!load) {
		emft_queue_save_state (emft);
		g_free (full_name);
		return;
	}

	gtk_tree_store_set((GtkTreeStore *)model, root, COL_BOOL_LOAD_SUBDIRS, FALSE, -1);
	
	m = mail_msg_new (&get_folder_info_op, NULL, sizeof (struct _EMFolderTreeGetFolderInfo));
	m->root = gtk_tree_row_reference_new (model, tree_path);
	camel_object_ref (store);
	m->store = store;
	m->emft = emft;
	g_object_ref(emft);
	m->top = full_name;
	m->flags = CAMEL_STORE_FOLDER_INFO_RECURSIVE|CAMEL_STORE_FOLDER_INFO_FAST;
	
	e_thread_put (mail_thread_new, (EMsg *) m);
}

static gboolean
emft_tree_test_collapse_row (GtkTreeView *treeview, GtkTreeIter *root, GtkTreePath *tree_path, EMFolderTree *emft)
{
	GtkTreeSelection *selection;
	GtkTreeModel *model;
	GtkTreeIter cursor;
	
	selection = gtk_tree_view_get_selection (treeview);
	if (gtk_tree_selection_get_selected (selection, &model, &cursor)) {
		/* select the collapsed node IFF it is a parent of the currently selected folder */
		if (gtk_tree_store_is_ancestor ((GtkTreeStore *) model, root, &cursor))
			gtk_tree_view_set_cursor (treeview, tree_path, NULL, FALSE);
	}
	
	emft_update_model_expanded_state (emft->priv, root, FALSE);
	emft_queue_save_state (emft);
	
	return FALSE;
}

static void
emft_tree_row_activated (GtkTreeView *treeview, GtkTreePath *tree_path, GtkTreeViewColumn *column, EMFolderTree *emft)
{
	struct _EMFolderTreePrivate *priv = emft->priv;
	GtkTreeModel *model = (GtkTreeModel *) priv->model;
	char *full_name, *uri;
	GtkTreeIter iter;
	guint32 flags;
	
	if (!emft_select_func(NULL, model, tree_path, FALSE, emft))
		return;
	
	if (!gtk_tree_model_get_iter (model, &iter, tree_path))
		return;
	
	gtk_tree_model_get (model, &iter, COL_STRING_FULL_NAME, &full_name,
			    COL_STRING_URI, &uri, COL_UINT_FLAGS, &flags, -1);

	emft_clear_selected_list(emft);
	
	g_signal_emit (emft, signals[FOLDER_SELECTED], 0, full_name, uri, flags);
	g_signal_emit (emft, signals[FOLDER_ACTIVATED], 0, full_name, uri);

	g_free(full_name);
	g_free(uri);
}

#if 0
static void
emft_popup_view (GtkWidget *item, EMFolderTree *emft)
{

}

static void
emft_popup_open_new (GtkWidget *item, EMFolderTree *emft)
{
}
#endif

static void
emft_popup_copy(EPopup *ep, EPopupItem *item, void *data)
{
	EMFolderTree *emft = data;
	CamelFolderInfo *fi = NULL;

	/* FIXME: use async apis */
	if ((fi = em_folder_tree_get_selected_folder_info (emft)) != NULL)
		em_folder_utils_copy_folder(fi, FALSE);
}

static void
emft_popup_move(EPopup *ep, EPopupItem *item, void *data)
{
	EMFolderTree *emft = data;
	CamelFolderInfo *fi = NULL;

	/* FIXME: use async apis */
	if ((fi = em_folder_tree_get_selected_folder_info (emft)) != NULL)
		em_folder_utils_copy_folder(fi, TRUE);
}

static void
emft_popup_new_folder (EPopup *ep, EPopupItem *pitem, void *data)
{
	EMFolderTree *emft = data;
	CamelFolderInfo *fi;

	if ((fi = em_folder_tree_get_selected_folder_info (emft)) != NULL) {
		em_folder_utils_create_folder(fi, emft);
		camel_folder_info_free(fi);
	}
}

static void
selfunc (GtkTreeModel *model, GtkTreePath *path, GtkTreeIter *iter, gpointer data)
{
	struct _emft_selection_data *dat = (struct _emft_selection_data *) data;
	
	dat->model = model;
	if (!dat->set)
		*(dat->iter) = *iter;
	dat->set = TRUE;
}

static gboolean
emft_selection_get_selected (GtkTreeSelection *selection, GtkTreeModel **model, GtkTreeIter *iter)
{
	struct _emft_selection_data dat = { NULL, iter, FALSE };
	
	if (gtk_tree_selection_get_mode (selection) == GTK_SELECTION_MULTIPLE) {
		gtk_tree_selection_selected_foreach (selection, selfunc, &dat);
		if (model)
			*model = dat.model;
		return dat.set;
	} else {
		return gtk_tree_selection_get_selected (selection, model, iter);
	}
}

static void
emft_popup_delete_folder (EPopup *ep, EPopupItem *pitem, void *data)
{
	EMFolderTree *emft = data;
	CamelFolder *folder;	

	if ((folder = em_folder_tree_get_selected_folder (emft)) != NULL) {
		em_folder_utils_delete_folder(folder);
	}
}

static void
emft_popup_rename_folder (EPopup *ep, EPopupItem *pitem, void *data)
{
	EMFolderTree *emft = data;
	CamelFolder *folder;

	if ((folder = em_folder_tree_get_selected_folder (emft)) != NULL) {
		em_folder_utils_rename_folder(folder);
	}
}

static void
emft_popup_refresh_folder (EPopup *ep, EPopupItem *pitem, void *data)
{
        EMFolderTree *emft = data;
        CamelFolder *folder;

        if ((folder = em_folder_tree_get_selected_folder (emft)) != NULL)
                mail_refresh_folder(folder, NULL, NULL);
}

static void
emft_popup_flush_outbox (EPopup *ep, EPopupItem *pitem, void *data)
{
	mail_send ();
}

static void
emft_popup_empty_trash (EPopup *ep, EPopupItem *pitem, void *data)
{
	em_utils_empty_trash (data);
}

static void
emft_popup_properties (EPopup *ep, EPopupItem *pitem, void *data)
{
	EMFolderTree *emft = data;
	struct _EMFolderTreePrivate *priv = emft->priv;
	GtkTreeSelection *selection;
	GtkTreeModel *model;
	GtkTreeIter iter;
	char *uri;
	
	selection = gtk_tree_view_get_selection (priv->treeview);
	if (!emft_selection_get_selected (selection, &model, &iter))
		return;
	
	gtk_tree_model_get (model, &iter, COL_STRING_URI, &uri, -1);
	em_folder_properties_show (NULL, NULL, uri);
	g_free (uri);
}

static EPopupItem emft_popup_items[] = {
#if 0
	{ E_POPUP_ITEM, "00.emc.00", N_("_View"), emft_popup_view, NULL, NULL, EM_POPUP_FOLDER_SELECT },
	{ E_POPUP_ITEM, "00.emc.01", N_("Open in _New Window"), emft_popup_open_new, NULL, NULL, EM_POPUP_FOLDER_SELECT },

	{ E_POPUP_BAR, "10.emc" },
#endif
	{ E_POPUP_ITEM, "10.emc.00", N_("_Copy..."), emft_popup_copy, NULL, "stock_folder-copy", 0, EM_POPUP_FOLDER_FOLDER|EM_POPUP_FOLDER_SELECT },
	{ E_POPUP_ITEM, "10.emc.01", N_("_Move..."), emft_popup_move, NULL, "stock_folder-move", 0, EM_POPUP_FOLDER_FOLDER|EM_POPUP_FOLDER_DELETE },
	
	{ E_POPUP_BAR, "20.emc" },
	/* FIXME: need to disable for nochildren folders */
	{ E_POPUP_ITEM, "20.emc.00", N_("_New Folder..."), emft_popup_new_folder, NULL, "stock_new-dir", 0, EM_POPUP_FOLDER_INFERIORS },
	/* FIXME: need to disable for undeletable folders */
	{ E_POPUP_ITEM, "20.emc.01", N_("_Delete"), emft_popup_delete_folder, NULL, "stock_delete", 0, EM_POPUP_FOLDER_FOLDER|EM_POPUP_FOLDER_DELETE },
	{ E_POPUP_ITEM, "20.emc.02", N_("_Rename..."), emft_popup_rename_folder, NULL, NULL, 0, EM_POPUP_FOLDER_FOLDER|EM_POPUP_FOLDER_DELETE },
	{ E_POPUP_ITEM, "20.emc.03", N_("Re_fresh"), emft_popup_refresh_folder, NULL, "stock_refresh", EM_POPUP_FOLDER_NONSTATIC, EM_POPUP_FOLDER_FOLDER|EM_POPUP_FOLDER_SELECT},
	{ E_POPUP_ITEM, "20.emc.04", N_("Fl_ush Outbox"), emft_popup_flush_outbox, NULL, "stock_mail-send", EM_POPUP_FOLDER_OUTBOX, 0 },

	
	{ E_POPUP_BAR, "80.emc" },
	{ E_POPUP_ITEM, "80.emc.00", N_("_Properties"), emft_popup_properties, NULL, "stock_folder-properties", 0, EM_POPUP_FOLDER_FOLDER|EM_POPUP_FOLDER_SELECT }
};
static EPopupItem trash_popup_item = {E_POPUP_ITEM, "20.emc.03", N_("_Empty Trash"), emft_popup_empty_trash,NULL,NULL, 1, EM_POPUP_FOLDER_FOLDER|EM_POPUP_FOLDER_SELECT};

static void
emft_popup_free(EPopup *ep, GSList *items, void *data)
{
	g_slist_free(items);
}

static gboolean
emft_popup (EMFolderTree *emft, GdkEvent *event)
{
	GtkTreeView *treeview;
	GtkTreeSelection *selection;
	CamelStore *local, *store;
	EMPopupTargetFolder *target;
	GtkTreeModel *model;
	GtkTreeIter iter;
	GSList *menus = NULL;
	guint32 info_flags = 0;
	guint32 flags = 0;
	guint32 folder_type_flags = 0;
	gboolean isstore;
	char *uri, *full_name;
	GtkMenu *menu;
	EMPopup *emp;
	CamelFolder *selfolder = NULL;
	int i;

	treeview = emft->priv->treeview;

	/* this centralises working out when the user's done something */
	emft_tree_user_event(treeview, (GdkEvent *)event, emft);

	/* FIXME: we really need the folderinfo to build a proper menu */
	selection = gtk_tree_view_get_selection (treeview);
	if (!emft_selection_get_selected (selection, &model, &iter))
		return FALSE;
	
	gtk_tree_model_get (model, &iter, COL_POINTER_CAMEL_STORE, &store,
			    COL_STRING_URI, &uri, COL_STRING_FULL_NAME, &full_name,
			    COL_BOOL_IS_STORE, &isstore, COL_UINT_FLAGS, &folder_type_flags, -1);

	/* Stores have full_name == NULL, otherwise its just a placeholder */
	/* NB: This is kind of messy */
	if (!isstore && full_name == NULL) {
		g_free (uri);
		return FALSE;
	}
	
	/* TODO: em_popup_target_folder_new? */
	if (isstore) {
		flags |= EM_POPUP_FOLDER_STORE;
	} else {
		flags |= EM_POPUP_FOLDER_FOLDER;

		local = mail_component_peek_local_store (NULL);
		
		/* don't allow deletion of special local folders */
		if (!(store == local && is_special_local_folder (full_name)))
			flags |= EM_POPUP_FOLDER_DELETE;
	
		/* hack for vTrash/vJunk */
		if (!strcmp (full_name, CAMEL_VTRASH_NAME) || !strcmp (full_name, CAMEL_VJUNK_NAME))
			info_flags |= CAMEL_FOLDER_VIRTUAL | CAMEL_FOLDER_NOINFERIORS;

		selfolder = em_folder_tree_get_selected_folder (emft);
		if (em_utils_folder_is_outbox (selfolder, NULL))
			info_flags |= CAMEL_FOLDER_TYPE_OUTBOX;
	}

	/** @HookPoint-EMPopup: Folder Tree Context Menu
	 * @Id: org.gnome.evolution.mail.foldertree.popup
	 * @Class: org.gnome.evolution.mail.popup:1.0
	 * @Target: EMPopupTargetFolder
	 *
	 * This is the context menu shown on the folder tree.
	 */
	emp = em_popup_new ("org.gnome.evolution.mail.foldertree.popup");
	
	/* FIXME: pass valid fi->flags here */
	target = em_popup_target_new_folder (emp, uri, info_flags, flags);
	
	for (i = 0; i < sizeof (emft_popup_items) / sizeof (emft_popup_items[0]); i++)
		menus = g_slist_prepend (menus, &emft_popup_items[i]);
	
	if ((folder_type_flags & CAMEL_FOLDER_TYPE_MASK) == CAMEL_FOLDER_TYPE_TRASH)
		menus = g_slist_prepend (menus, &trash_popup_item);

	e_popup_add_items ((EPopup *)emp, menus, NULL, emft_popup_free, emft);

	menu = e_popup_create_menu_once ((EPopup *)emp, (EPopupTarget *)target, 0);
	
	if (event == NULL || event->type == GDK_KEY_PRESS) {
		/* FIXME: menu pos function */
		gtk_menu_popup (menu, NULL, NULL, NULL, NULL, 0, gtk_get_current_event_time());
	} else {
		gtk_menu_popup (menu, NULL, NULL, NULL, NULL, event->button.button, event->button.time);
	}
	
	g_free (full_name);
	g_free (uri);

	return TRUE;
}

static gboolean 
emft_popup_menu (GtkWidget *widget)
{
	return emft_popup (EM_FOLDER_TREE (widget), NULL);
}

static gboolean
emft_tree_button_press (GtkTreeView *treeview, GdkEventButton *event, EMFolderTree *emft)
{
	GtkTreeSelection *selection;
	GtkTreePath *tree_path;

	/* this centralises working out when the user's done something */
	emft_tree_user_event(treeview, (GdkEvent *)event, emft);
	
	if (event->button != 3 && !(event->button == 1 && event->type == GDK_2BUTTON_PRESS))
		return FALSE;
	
	if (!gtk_tree_view_get_path_at_pos (treeview, (int) event->x, (int) event->y, &tree_path, NULL, NULL, NULL))
		return FALSE;
	
	/* select/focus the row that was right-clicked or double-clicked */
	selection = gtk_tree_view_get_selection (treeview);
	gtk_tree_selection_select_path(selection, tree_path);
	gtk_tree_view_set_cursor (treeview, tree_path, NULL, FALSE);
	
	if (event->button == 1 && event->type == GDK_2BUTTON_PRESS) {
		emft_tree_row_activated (treeview, tree_path, NULL, emft);
		gtk_tree_path_free (tree_path);
		return TRUE;
	}
	
	gtk_tree_path_free (tree_path);
	
	return emft_popup (emft, (GdkEvent *)event);
}

/* This is called for keyboard and mouse events, it seems the only way
 * we know the user has done something to the selection as opposed to
 * code or initialisation processes */
static gboolean
emft_tree_user_event (GtkTreeView *treeview, GdkEvent *e, EMFolderTree *emft)
{
	if (e && e->type == GDK_KEY_PRESS && e->key.keyval == GDK_space) {
		return TRUE;
	}
	if (!emft->priv->do_multiselect)
		emft_clear_selected_list(emft);

	emft->priv->cursor_set = TRUE;

	return FALSE;
}

static void
emft_tree_selection_changed (GtkTreeSelection *selection, EMFolderTree *emft)
{
	char *full_name, *uri;
	GtkTreeModel *model;
	GtkTreeIter iter;
	guint32 flags;
	
	if (!emft_selection_get_selected (selection, &model, &iter)) {
		em_folder_tree_model_set_selected (emft->priv->model, NULL);
		g_signal_emit (emft, signals[FOLDER_SELECTED], 0, NULL, NULL, 0);	
		emft_queue_save_state (emft);
		return;
	}

	gtk_tree_model_get (model, &iter, COL_STRING_FULL_NAME, &full_name,
			    COL_STRING_URI, &uri, COL_UINT_FLAGS, &flags, -1);

	g_signal_emit (emft, signals[FOLDER_SELECTED], 0, full_name, uri, flags);
	g_free(uri);
	g_free(full_name);
}

void
em_folder_tree_set_selected (EMFolderTree *emft, const char *uri, gboolean expand_only)
{
	GList *l = NULL;

	if (uri && uri[0])
		l = g_list_append(l, (void *)uri);

	em_folder_tree_set_selected_list(emft, l, expand_only);
	g_list_free(l);
}


void
em_folder_tree_select_next_path (EMFolderTree *emft, gboolean skip_read_folders)
{
	GtkTreeSelection *selection;
	GtkTreeModel *model;
	GtkTreeIter iter, parent, child;
	GtkTreePath *current_path, *path = NULL;
	unsigned int unread = 0;
	struct _EMFolderTreePrivate *priv = emft->priv;

	g_return_if_fail (EM_IS_FOLDER_TREE (emft));

	selection = gtk_tree_view_get_selection(emft->priv->treeview);
	if (gtk_tree_selection_get_selected(selection, &model, &iter)) {

		current_path = gtk_tree_model_get_path (model, &iter);

		do { 
		if (gtk_tree_model_iter_has_child (model, &iter)) {
			gtk_tree_model_iter_children (model, &child, &iter);
			path = gtk_tree_model_get_path (model, &child);
			iter = child;
		} else {
			while (1) {
				gboolean has_parent = gtk_tree_model_iter_parent (model, &parent, &iter);
				if (gtk_tree_model_iter_next (model, &iter)) {
					path = gtk_tree_model_get_path (model, &iter);
					break;
				} else {
					if (has_parent) {
						iter =  parent;
					} else {
						/* Reached end. Wrapup*/
						gtk_tree_model_get_iter_first (model, &iter);
						path = gtk_tree_model_get_path (model, &iter);
						break;
					}
				}
			}
		}
		gtk_tree_model_get (model, &iter, COL_UINT_UNREAD, &unread, -1);

		/* TODO : Flags here for better options */
		} while (skip_read_folders && unread <=0 && gtk_tree_path_compare (current_path, path));
	}

	if (path) {
		if (!gtk_tree_view_row_expanded (emft->priv->treeview, path)) 			
			gtk_tree_view_expand_to_path (emft->priv->treeview, path);

		gtk_tree_selection_select_path(selection, path);

		if (!priv->cursor_set) {
			gtk_tree_view_set_cursor (priv->treeview, path, NULL, FALSE);
			priv->cursor_set = TRUE;
		}
		gtk_tree_view_scroll_to_cell (priv->treeview, path, NULL, TRUE, 0.5f, 0.0f);
	}	
	return;
}

static GtkTreeIter 
get_last_child (GtkTreeModel *model, GtkTreeIter *iter)
{
	GtkTreeIter *child = g_new0 (GtkTreeIter, 1);	
	gboolean has_child = gtk_tree_model_iter_has_child (model, iter);

	if (gtk_tree_model_iter_next (model, iter)) {
		get_last_child (model, iter);
	} else {

		if (has_child) {
			/* Pick the last one */
			int nchildren = gtk_tree_model_iter_n_children (model, iter);
			gtk_tree_model_iter_nth_child ( model, child, iter, nchildren-1);
			get_last_child (model, child);
		}
		else {
			return *iter;
		}

	}
//TODO : The function should return the value here !!
}

void
em_folder_tree_select_prev_path (EMFolderTree *emft, gboolean skip_read_folders)
{
	GtkTreeSelection *selection;
	GtkTreeModel *model;
	GtkTreeIter iter, child;
	GtkTreePath *path, *current_path = NULL;
	unsigned int unread = 0;
	struct _EMFolderTreePrivate *priv = emft->priv;

	g_return_if_fail (EM_IS_FOLDER_TREE (emft));

	selection = gtk_tree_view_get_selection(emft->priv->treeview);

	if (gtk_tree_selection_get_selected(selection, &model, &iter)){

		current_path = gtk_tree_model_get_path (model, &iter);
		do {
		path = gtk_tree_model_get_path (model, &iter);
		if (!gtk_tree_path_prev (path)) {
			gtk_tree_path_up (path);

			if (!gtk_tree_path_compare (gtk_tree_path_new_first (), path))
			{
				gtk_tree_model_get_iter_first (model, &iter);
				iter = get_last_child (model,&iter);
				path = gtk_tree_model_get_path (model, &iter); 
			}
		} else {
			gtk_tree_model_get_iter (model, &iter, path);
			if (gtk_tree_model_iter_has_child (model, &iter)) {
				int nchildren = gtk_tree_model_iter_n_children (model, &iter);
				gtk_tree_model_iter_nth_child ( model, &child, &iter, nchildren-1);
				path = gtk_tree_model_get_path (model, &child);
			}
		}

		/* TODO : Flags here for better options */
		gtk_tree_model_get_iter_from_string (model, &iter, gtk_tree_path_to_string (path) );

		gtk_tree_model_get (model, &iter, COL_UINT_UNREAD, &unread, -1);

		} while (skip_read_folders && unread <=0 && gtk_tree_path_compare (current_path, path));
	}

	if (path) {
		if (!gtk_tree_view_row_expanded (priv->treeview, path)) {
			gtk_tree_view_expand_to_path (priv->treeview, path);
		}

		gtk_tree_selection_select_path(selection, path);

		if (!priv->cursor_set) {
			gtk_tree_view_set_cursor (priv->treeview, path, NULL, FALSE);
			priv->cursor_set = TRUE;
		}
		gtk_tree_view_scroll_to_cell (priv->treeview, path, NULL, TRUE, 0.5f, 0.0f);
	}	
	return;
}


char *
em_folder_tree_get_selected_uri (EMFolderTree *emft)
{
	GtkTreeSelection *selection;
	GtkTreeModel *model;
	GtkTreeIter iter;
	char *uri = NULL;

	g_return_val_if_fail (EM_IS_FOLDER_TREE (emft), NULL);

	selection = gtk_tree_view_get_selection(emft->priv->treeview);
	if (gtk_tree_selection_get_selected(selection, &model, &iter))
		gtk_tree_model_get(model, &iter, COL_STRING_URI, &uri, -1);
	
	return uri;
}

char *
em_folder_tree_get_selected_path (EMFolderTree *emft)
{
	GtkTreeSelection *selection;
	GtkTreeModel *model;
	GtkTreeIter iter;
	char *name = NULL;

	g_return_val_if_fail (EM_IS_FOLDER_TREE (emft), NULL);

	selection = gtk_tree_view_get_selection(emft->priv->treeview);
	if (gtk_tree_selection_get_selected(selection, &model, &iter))
		gtk_tree_model_get(model, &iter, COL_STRING_FULL_NAME, &name, -1);
	
	return name;
}

CamelFolder *
em_folder_tree_get_selected_folder (EMFolderTree *emft)
{
	GtkTreeSelection *selection;
	GtkTreeModel *model;
	GtkTreeIter iter;
	char *full_name = NULL;
	CamelException ex;
	CamelStore *store = NULL;
	CamelFolder *folder = NULL;

	g_return_val_if_fail (EM_IS_FOLDER_TREE (emft), NULL);

	camel_exception_init (&ex);

	selection = gtk_tree_view_get_selection(emft->priv->treeview);
	if (gtk_tree_selection_get_selected(selection, &model, &iter))
		gtk_tree_model_get (model, &iter, COL_POINTER_CAMEL_STORE, &store,
				    COL_STRING_FULL_NAME, &full_name, -1);

	folder = camel_store_get_folder (store, full_name, CAMEL_STORE_FOLDER_INFO_FAST, &ex);

	camel_exception_clear (&ex);

	return folder;
}

CamelFolderInfo *
em_folder_tree_get_selected_folder_info (EMFolderTree *emft)
{
	GtkTreeSelection *selection;
	GtkTreeModel *model;
	GtkTreeIter iter;
	char *full_name = NULL, *name = NULL, *uri = NULL;
	CamelException ex;
	CamelStore *store = NULL;
	CamelFolderInfo *fi = NULL;

	g_return_val_if_fail (EM_IS_FOLDER_TREE (emft), NULL);

	camel_exception_init (&ex);

	selection = gtk_tree_view_get_selection(emft->priv->treeview);
	if (gtk_tree_selection_get_selected(selection, &model, &iter))
		gtk_tree_model_get (model, &iter, COL_POINTER_CAMEL_STORE, &store,
				    COL_STRING_FULL_NAME, &full_name, 
				    COL_STRING_DISPLAY_NAME, &name, 
				    COL_STRING_URI, &uri, -1);

	fi = g_new0(CamelFolderInfo, 1);
	fi->full_name = g_strdup (full_name);
	fi->uri = g_strdup (uri);
	fi->name = g_strdup (name);

	d(g_print ("em_folder_tree_get_selected_folder_info: fi->full_name=[%s], fi->uri=[%s], fi->name=[%s]\n",
		   fi->full_name, fi->uri, fi->name));
	d(g_print ("em_folder_tree_get_selected_folder_info: full_name=[%s], uri=[%s], name=[%s]\n",
		   full_name, uri, name));

	if (!fi->full_name)
		goto done;

	g_free (fi->name);
        if (!g_ascii_strcasecmp (fi->full_name, "INBOX"))
                fi->name = g_strdup (_("Inbox"));
        else
                fi->name = g_strdup (name);
 done:
	return fi;
}

EMFolderTreeModel *
em_folder_tree_get_model (EMFolderTree *emft)
{
	g_return_val_if_fail (EM_IS_FOLDER_TREE (emft), NULL);
	
	return emft->priv->model;
}

EMFolderTreeModelStoreInfo *
em_folder_tree_get_model_storeinfo (EMFolderTree *emft, CamelStore *store)
{
	struct _EMFolderTreePrivate *priv = emft->priv;
	struct _EMFolderTreeModelStoreInfo *si;

	if (!(si = g_hash_table_lookup (priv->model->store_hash, store))) {
		g_return_val_if_reached (NULL);
	}
	return si;
}

static gboolean
emft_save_state (EMFolderTree *emft)
{
	struct _EMFolderTreePrivate *priv = emft->priv;
	
	em_folder_tree_model_save_state (priv->model);
	priv->save_state_id = 0;
	
	return FALSE;
}


static void
emft_queue_save_state (EMFolderTree *emft)
{
	struct _EMFolderTreePrivate *priv = emft->priv;
	
	if (priv->save_state_id != 0)
		return;
	
	priv->save_state_id = g_timeout_add (1000, (GSourceFunc) emft_save_state, emft);
}
