path: root/mail/em-folder-tree.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Authors: Jeffrey Stedfast <fejj@ximian.com>
 *
 *  Copyright (C) 1999-2008 Novell, Inc. (www.novell.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 <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 "e-util/e-util.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_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_VIRTUAL,
    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 ("folder", E_ICON_SIZE_MENU);
        folder_icons[FOLDER_ICON_INBOX] = e_icon_factory_get_icon ("mail-inbox", E_ICON_SIZE_MENU);
        folder_icons[FOLDER_ICON_OUTBOX] = e_icon_factory_get_icon ("mail-outbox", E_ICON_SIZE_MENU);
        folder_icons[FOLDER_ICON_TRASH] = e_icon_factory_get_icon ("user-trash", E_ICON_SIZE_MENU);
        folder_icons[FOLDER_ICON_JUNK] = e_icon_factory_get_icon ("mail-mark-junk", 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 ("mail-sent", E_ICON_SIZE_MENU);
        folder_icons[FOLDER_ICON_VIRTUAL] = e_icon_factory_get_icon ("folder-saved-search", 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 if (flags & CAMEL_FOLDER_VIRTUAL)
                pixbuf = folder_icons[FOLDER_ICON_VIRTUAL];
            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 ();
    if (!gconf_client_get_bool (gconf, "/apps/evolution/mail/display/no_folder_dots", NULL))
        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->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 (e_get_user_data_dir ());
    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;
    gboolean is_expanded;

    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 : "");
    }

    is_expanded = em_folder_tree_model_get_expanded (model, key);
    u = g_hash_table_lookup(priv->select_uris_table, key);
    if (is_expanded || u) {
        if (is_expanded) {
            gtk_tree_view_expand_to_path (priv->treeview, tree_path);
            gtk_tree_view_expand_row (priv->treeview, tree_path, FALSE);
        } else {
            char *c = strrchr (key, '/');

            *c = '\0';
            emft_expand_node (model, key, emft);
        }

        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 {
    MailMsg base;

    /* 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->base.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 gchar *
emft_drop_async__desc (struct _DragDataReceivedAsync *m)
{
    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__exec (struct _DragDataReceivedAsync *m)
{
    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 (&m->base.ex, CAMEL_EXCEPTION_SYSTEM,
                     _("Cannot drop message(s) into toplevel store"));
    } else if ((folder = camel_store_get_folder (m->store, m->full_name, 0, &m->base.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, &m->base.ex);
            m->moved = m->move && !camel_exception_is_set(&m->base.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 _DragDataReceivedAsync *m)
{
    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 MailMsgInfo emft_drop_async_info = {
    sizeof (struct _DragDataReceivedAsync),
    (MailMsgDescFunc) emft_drop_async__desc,
    (MailMsgExecFunc) emft_drop_async__exec,
    (MailMsgDoneFunc) NULL,
    (MailMsgFreeFunc) emft_drop_async__free
};

static void
tree_drag_data_action(struct _DragDataReceivedAsync *m)
{
    m->move = m->action == GDK_ACTION_MOVE;
    mail_msg_unordered_push (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_unref(m);
}

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, "folder-copy", 2 },
    { E_POPUP_ITEM, "00.emc.03", N_("_Move"), emft_drop_popup_move, NULL, "folder-move", 2 },
    { E_POPUP_BAR, "10.emc" },
    { E_POPUP_ITEM, "99.emc.00", N_("Cancel _Drag"), emft_drop_popup_cancel, NULL, "dialog-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_info);
    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;
    guint32 flags = 0;

    /* 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_UINT_FLAGS, &flags,
               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 (flags & CAMEL_FOLDER_NOSELECT)
            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 {
    MailMsg base;

    /* input data */
    GtkTreeRowReference *root;
    EMFolderTree *emft;
    CamelStore *store;
    guint32 flags;
    char *top;

    /* output data */
    CamelFolderInfo *fi;
};

static gchar *
emft_get_folder_info__desc (struct _EMFolderTreeGetFolderInfo *m)
{
    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__exec (struct _EMFolderTreeGetFolderInfo *m)
{
    guint32 flags = m->flags | CAMEL_STORE_FOLDER_INFO_SUBSCRIBED;

    m->fi = camel_store_get_folder_info (m->store, m->top, flags, &m->base.ex);
}

static void
emft_get_folder_info__done (struct _EMFolderTreeGetFolderInfo *m)
{
    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(&m->base.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);

        gtk_tree_store_remove (model, &iter);

        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 {
        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 _EMFolderTreeGetFolderInfo *m)
{
    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 MailMsgInfo get_folder_info_info = {
    sizeof (struct _EMFolderTreeGetFolderInfo),
    (MailMsgDescFunc) emft_get_folder_info__desc,
    (MailMsgExecFunc) emft_get_folder_info__exec,
    (MailMsgDoneFunc) emft_get_folder_info__done,
    (MailMsgFreeFunc) 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_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_info);
    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;

    mail_msg_unordered_push (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
    /* FIXME: need to disable for nochildren folders */
    { E_POPUP_ITEM, "10.emc.00", N_("_New Folder..."), emft_popup_new_folder, NULL, "folder-new", 0, EM_POPUP_FOLDER_INFERIORS },

    { E_POPUP_ITEM, "10.emc.05", N_("_Copy..."), emft_popup_copy, NULL, "folder-copy", 0, EM_POPUP_FOLDER_FOLDER|EM_POPUP_FOLDER_SELECT },
    { E_POPUP_ITEM, "10.emc.06", N_("_Move..."), emft_popup_move, NULL, "folder-move", 0, EM_POPUP_FOLDER_FOLDER|EM_POPUP_FOLDER_DELETE },

    /* FIXME: need to disable for undeletable folders */
    { E_POPUP_BAR,  "20.emc" },
    { E_POPUP_ITEM, "20.emc.01", N_("_Delete"), emft_popup_delete_folder, NULL, "edit-delete", 0, EM_POPUP_FOLDER_FOLDER|EM_POPUP_FOLDER_DELETE },

    { E_POPUP_BAR, "30.emc" },
    { E_POPUP_ITEM, "30.emc.02", N_("_Rename..."), emft_popup_rename_folder, NULL, NULL, 0, EM_POPUP_FOLDER_FOLDER|EM_POPUP_FOLDER_DELETE },
    { E_POPUP_ITEM, "30.emc.03", N_("Re_fresh"), emft_popup_refresh_folder, NULL, "view-refresh", EM_POPUP_FOLDER_NONSTATIC, EM_POPUP_FOLDER_FOLDER|EM_POPUP_FOLDER_SELECT},
    { E_POPUP_ITEM, "30.emc.04", N_("Fl_ush Outbox"), emft_popup_flush_outbox, NULL, "mail-send", EM_POPUP_FOLDER_OUTBOX, 0 },


    { E_POPUP_BAR, "99.emc" },
    { E_POPUP_ITEM, "99.emc.00", N_("_Properties"), emft_popup_properties, NULL, "document-properties", 0, EM_POPUP_FOLDER_FOLDER|EM_POPUP_FOLDER_SELECT }
};
static EPopupItem trash_popup_item = {E_POPUP_ITEM, "30.emc.05", 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)) {
        return 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);
        return get_last_child (model, child);
    }

    return *iter;
}

void
em_folder_tree_select_prev_path (EMFolderTree *emft, gboolean skip_read_folders)
{
    GtkTreeSelection *selection;
    GtkTreeModel *model;
    GtkTreeIter iter, child;
    GtkTreePath *path = NULL, *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 = camel_folder_info_new ();
    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);
}