path: root/embed/downloader-view.c

/*
 *  Copyright © 2000-2004 Marco Pesenti Gritti
 *  Copyright © 2003, 2004 Xan Lopez
 *
 *  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, 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.
 *
 */

#include "config.h" 

#include "downloader-view.h"
#include "ephy-file-helpers.h"
#include "ephy-object-helpers.h"
#include "ephy-embed-shell.h"
#include "ephy-stock-icons.h"
#include "ephy-gui.h"
#include "ephy-debug.h"
#include "ephy-prefs.h"
#include "eel-gconf-extensions.h"

#include <glib/gi18n.h>
#include <gtk/gtk.h>
#include <gdk/gdkx.h>

#ifdef HAVE_LIBNOTIFY
#include <libnotify/notify.h>
#endif

enum
{
    COL_STATUS,
    COL_PERCENT,
    COL_IMAGE,
    COL_FILE,
    COL_REMAINING,
    COL_DOWNLOAD_OBJECT
};

enum
{
    PROGRESS_COL_POS,
    FILE_COL_POS,
    REMAINING_COL_POS
};

#define EPHY_DOWNLOADER_VIEW_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EPHY_TYPE_DOWNLOADER_VIEW, DownloaderViewPrivate))

struct _DownloaderViewPrivate
{
    GtkTreeModel *model;
    GHashTable *downloads_hash;

    /* Widgets */
    GtkWidget *window;
    GtkWidget *treeview;
    GtkWidget *pause_button;
    GtkWidget *abort_button;

    GtkStatusIcon *status_icon;
    gboolean ownref;

    guint source_id;
};

enum
{
    PROP_WINDOW,
    PROP_TREEVIEW,
    PROP_PAUSE_BUTTON,
    PROP_ABORT_BUTTON,
};

static const
EphyDialogProperty properties [] =
{
    { "download_manager_dialog",    NULL, PT_NORMAL, 0 },
    { "clist",          NULL, PT_NORMAL, 0 },
    { "pause_button",       NULL, PT_NORMAL, 0 },
    { "abort_button",       NULL, PT_NORMAL, 0 },

    { NULL }
};

enum
{
    RESPONSE_PAUSE = 1,
    RESPONSE_STOP = 2
};

static void
downloader_view_build_ui (DownloaderView *dv);
static void
downloader_view_class_init (DownloaderViewClass *klass);
static void
downloader_view_finalize (GObject *object);
static void
downloader_view_init (DownloaderView *dv);
static void
download_dialog_response_cb (GtkWidget *dialog,
                 int response,
                 DownloaderView *dv);
static gboolean
download_dialog_delete_event_cb (GtkWidget *window,
                 GdkEventAny *event,
                 DownloaderView *dv);

static void
download_progress_cb (WebKitDownload *download,
              GParamSpec *pspec,
              DownloaderView *dv);
static void
download_status_changed_cb (WebKitDownload *download,
                GParamSpec *pspec,
                DownloaderView *dv);
static gboolean
download_error_cb (WebKitDownload *download, gint error_code, gint error_detail,
           const gchar *reason, DownloaderView *dv);

G_DEFINE_TYPE (DownloaderView, downloader_view, EPHY_TYPE_DIALOG)

static void
downloader_view_class_init (DownloaderViewClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS (klass);

    object_class->finalize = downloader_view_finalize;

    g_type_class_add_private (object_class, sizeof(DownloaderViewPrivate));
}

static void
show_downloader_cb (DownloaderView *dv)
{
    if (!gtk_window_has_toplevel_focus (GTK_WINDOW (dv->priv->window)))
    {
        ephy_dialog_show (EPHY_DIALOG (dv));
        eel_gconf_set_boolean (CONF_DOWNLOADS_HIDDEN, FALSE);
    }
    else
    {
        ephy_dialog_hide (EPHY_DIALOG (dv));
        eel_gconf_set_boolean (CONF_DOWNLOADS_HIDDEN, TRUE);
    }
}

static void
status_icon_popup_menu_cb (GtkStatusIcon *icon,
               guint button,
               guint time,
                           DownloaderView *dv)
{
        GtkWidget *menu, *item;

    menu = gtk_menu_new ();

    /* this opens the downloader window, or brings it to the foreground if already open */
    item = gtk_menu_item_new_with_mnemonic (_("_Show Downloads"));
    g_signal_connect_swapped (item, "activate",
                  G_CALLBACK (show_downloader_cb), dv);
    gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
    gtk_widget_show_all (menu);

    gtk_menu_popup (GTK_MENU (menu), NULL, NULL,
            gtk_status_icon_position_menu, icon,
            button, time);
}

static void
show_status_icon (DownloaderView *dv)
{
    DownloaderViewPrivate *priv = dv->priv;

    priv->status_icon = gtk_status_icon_new_from_stock (STOCK_DOWNLOAD);

    g_signal_connect_swapped (priv->status_icon, "activate",
                  G_CALLBACK (show_downloader_cb), dv);
    g_signal_connect (priv->status_icon, "popup-menu",
              G_CALLBACK (status_icon_popup_menu_cb), dv);

    gtk_status_icon_set_visible (priv->status_icon, TRUE);
}

static gboolean
remove_download (WebKitDownload *download,
         gpointer rowref,
         DownloaderView *dv)
{
    WebKitDownloadStatus status;

    g_signal_handlers_disconnect_by_func
        (download, G_CALLBACK (download_progress_cb), dv);

    g_signal_handlers_disconnect_by_func
        (download, G_CALLBACK (download_status_changed_cb), dv);

    g_signal_handlers_disconnect_by_func
        (download, G_CALLBACK (download_error_cb), dv);

    status = webkit_download_get_status (download);
    if (status == WEBKIT_DOWNLOAD_STATUS_STARTED)
        webkit_download_cancel (download);

    g_object_unref (download);
    g_object_unref (dv);
    return TRUE;
}

static void
prepare_close_cb (EphyEmbedShell *shell,
          DownloaderView *view)
{
    DownloaderViewPrivate *priv = view->priv;

    /* the downloader owns a ref to itself, no need for another ref */

    /* hide window already */
    gtk_widget_hide (priv->window);

    /* cancel pending downloads */
    g_hash_table_foreach_remove (priv->downloads_hash,
                     (GHRFunc) remove_download, view);

    gtk_list_store_clear (GTK_LIST_STORE (priv->model));

    /* drop the self reference */
    g_object_unref (view);
}

static void
downloader_view_init (DownloaderView *dv)
{
    _ephy_embed_shell_track_object (embed_shell, G_OBJECT (dv));
    dv->priv = EPHY_DOWNLOADER_VIEW_GET_PRIVATE (dv);

    dv->priv->downloads_hash = g_hash_table_new_full
        (g_direct_hash, g_direct_equal, NULL,
         (GDestroyNotify)gtk_tree_row_reference_free);

    downloader_view_build_ui (dv);

    dv->priv->ownref = TRUE;

    show_status_icon (dv);

    g_signal_connect_object (embed_shell, "prepare_close",
                 G_CALLBACK (prepare_close_cb), dv, 0);
}

static void
downloader_view_finalize (GObject *object)
{
    DownloaderView *dv = EPHY_DOWNLOADER_VIEW (object);
    DownloaderViewPrivate *priv = dv->priv;

    if (priv->status_icon != NULL)
    {
        /* FIXME: this should not be necessary (setting visible to
         * FALSE), but we have to work-around a GTK+/gnome-panel bug:
         *   http://bugzilla.gnome.org/show_bug.cgi?id=340110
         */
        gtk_status_icon_set_visible (priv->status_icon, FALSE);
        g_object_unref (priv->status_icon);
        priv->status_icon = NULL;
    }
    
    if (priv->source_id != 0)
    {
        g_source_remove (priv->source_id);
        priv->source_id = 0;
    }
    
    g_hash_table_destroy (dv->priv->downloads_hash);

    G_OBJECT_CLASS (downloader_view_parent_class)->finalize (object);
}

DownloaderView *
downloader_view_new (void)
{
    return EPHY_DOWNLOADER_VIEW (g_object_new (EPHY_TYPE_DOWNLOADER_VIEW,
                           "persist-position", TRUE,
                           "default-width", 420,
                           "default-height", 250,
                           NULL));
}

#ifdef HAVE_LIBNOTIFY
static void
notification_closed_cb (NotifyNotification *notification,
            DownloaderView *dv)
{
    g_object_unref (dv);
}

static gboolean
show_notification_cb (NotifyNotification *notification)
{
    DownloaderView *dv;
    GError *error = NULL;

    dv = g_object_get_data (G_OBJECT (notification), "dv");
    notify_notification_show (notification, &error);

    if (error)
    {
        /* notification_closed_cb () will never be called. */
        g_warning ("Error showing download notification: %s",
               error->message);
        g_object_unref (dv);
        g_error_free (error);
    }

    return FALSE;
}

static void
show_notification (DownloaderView *dv, const char *title, const char *msg)
{
    NotifyNotification *notification;
    GtkStatusIcon *status_icon;

    status_icon = dv->priv->status_icon;

    /* We keep the DownloaderView alive until the notification is gone. */
    g_object_ref (dv);

    notification = notify_notification_new (title, msg,
                        GTK_STOCK_INFO, NULL);

    g_signal_connect_after (notification, "closed",
                G_CALLBACK (notification_closed_cb), dv);
    g_object_set_data (G_OBJECT (notification), "dv", dv);

    notify_notification_set_timeout (notification, NOTIFY_EXPIRES_DEFAULT);
    notify_notification_set_urgency (notification, NOTIFY_URGENCY_LOW);

    notify_notification_attach_to_status_icon (notification, status_icon);

    /* There are some visual glitches when the notification is shown and
     * the GtkStatusIcon is still not visible. To avoid that, we delay the
     * popup a bit. */
    g_timeout_add (500, (GSourceFunc) show_notification_cb, notification);
}
#endif

static char *
format_interval (gdouble interval)
{
    int hours, mins, secs;

    hours = (int) (interval / 3600);
    interval -= hours * 3600;
    mins = (int) (interval / 60);
    interval -= mins * 60;
    secs = (int) interval;

    if (hours > 0)
    {
        return g_strdup_printf (_("%u:%02u.%02u"), hours, mins, secs);
    }
    else
    {
        return g_strdup_printf (_("%02u.%02u"), mins, secs);
    }
}

static GtkTreeRowReference *
get_row_from_download (DownloaderView *dv, WebKitDownload *download)
{
    return  g_hash_table_lookup (dv->priv->downloads_hash, download);
}

static void
update_buttons (DownloaderView *dv)
{
    GtkTreeSelection *selection;
    GtkTreeModel *model;
    GtkTreeIter iter;
    WebKitDownloadStatus status;
    WebKitDownload *download;
    gboolean pause_enabled = FALSE;
    gboolean abort_enabled = FALSE;
    gboolean label_pause = TRUE;
    GList *selected = NULL;

    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW(dv->priv->treeview));
    selected = gtk_tree_selection_get_selected_rows (selection, &model);

    if (g_list_length (selected) == 1)
    {
        if (gtk_tree_model_get_iter (model, &iter, selected->data) != TRUE)
            return;
        
        gtk_tree_model_get (model, &iter, COL_DOWNLOAD_OBJECT, &download, -1);
        status = webkit_download_get_status (download);

        /* Pausing is not supported yet */
        pause_enabled = FALSE;
        label_pause = TRUE;
        abort_enabled = TRUE;
    }
    else
    {
        abort_enabled = TRUE;
    }
    
    g_list_foreach (selected, (GFunc) gtk_tree_path_free, NULL);
    g_list_free (selected);
    
    gtk_widget_set_sensitive (dv->priv->pause_button, pause_enabled);
    gtk_widget_set_sensitive (dv->priv->abort_button, abort_enabled);
    gtk_button_set_label (GTK_BUTTON (dv->priv->pause_button),
                  label_pause ? _("_Pause") : _("_Resume"));
}

static char *
ephy_download_get_name (WebKitDownload *download)
{
    const char *target;
    char *user_destination;
    char *result;

    target = webkit_download_get_destination_uri (download);
    user_destination = g_object_get_data (G_OBJECT (download),
                          "user-destination-uri");

    if (user_destination || target)
    {
        result = g_path_get_basename (user_destination ?
                          user_destination : target);
    }
    else
    {
        result = g_strdup (_("Unknown"));
    }

    return result;
}

static gdouble
ephy_download_get_remaining_time (WebKitDownload *download)
{
    gint64 total, cur;
    gdouble elapsed_time;
    gdouble remaining_time;
    gdouble per_byte_time;

    total = webkit_download_get_total_size (download);
    cur = webkit_download_get_current_size (download);
    elapsed_time = webkit_download_get_elapsed_time (download);

    if (cur <= 0)
    {
        return -1.0;
    }

    per_byte_time = elapsed_time / cur;
    remaining_time = per_byte_time * (total - cur);

    return remaining_time;
}

static void
do_open_downloaded_file (DownloaderView *dv, WebKitDownload *download, gboolean open_location)
{
    DownloaderViewPrivate *priv = dv->priv;
    GdkDisplay *gdk_display;
    const char *destination_uri;
    char *user_destination;
    GFile *downloaded_file;

    gdk_display = gtk_widget_get_display (priv->window);

    destination_uri = webkit_download_get_destination_uri (download);
    user_destination = g_object_get_data (G_OBJECT (download),
                          "user-destination-uri");

    downloaded_file = g_file_new_for_uri (user_destination ?
                          user_destination : destination_uri);
    if (open_location)
    {
        ephy_file_browse_to (downloaded_file,
                     gdk_x11_display_get_user_time (gdk_display));
    }
    else
    {
        ephy_file_launch_handler (NULL, downloaded_file,
                      gdk_x11_display_get_user_time (gdk_display));
    }
    g_object_unref (downloaded_file);
}

static void
open_downloaded_file (DownloaderView *dv, WebKitDownload *download)
{
    do_open_downloaded_file (dv, download, FALSE);
}

static void
open_downloaded_file_location (DownloaderView *dv, WebKitDownload *download)
{
    do_open_downloaded_file (dv, download, TRUE);
}

static void
update_download_row (DownloaderView *dv, WebKitDownload *download)
{
    GtkTreeRowReference *row_ref;
    GtkTreePath *path;
    GtkTreeIter iter;
    WebKitDownloadStatus status;
    guint64 total, current;
    gdouble remaining_seconds = 0.0;
    char *remaining, *file, *cur_progress, *name;
    struct tm;
    int percent = 0;
    DownloadAction action;
#ifdef HAVE_LIBNOTIFY
    char *downloaded;
#endif

    row_ref = get_row_from_download (dv, download);
    /* In downloader_view_add_download() we call this function manually to
     * ensure the view has something visible in the tree view, however
     * signal handlers might have already removed this download from the
     * DV, this is that case. */
    if (row_ref == NULL)
        return;

    /* Status special casing */
    status = webkit_download_get_status (download);

    total = webkit_download_get_total_size (download);
    current = webkit_download_get_current_size (download);

    cur_progress = g_format_size_for_display (current);

    name = ephy_download_get_name (download);
    
    switch (status)
    {
    case WEBKIT_DOWNLOAD_STATUS_CANCELLED:
        downloader_view_remove_download (dv, download);
        return;
    case WEBKIT_DOWNLOAD_STATUS_FINISHED:
        action = GPOINTER_TO_INT(g_object_get_data (G_OBJECT(download),
                                "download-action"));

        switch (action)
        {
        case DOWNLOAD_ACTION_OPEN:
            open_downloaded_file (dv, download);
            break;
        case DOWNLOAD_ACTION_OPEN_LOCATION:
            open_downloaded_file_location (dv, download);
            break;
        case DOWNLOAD_ACTION_DOWNLOAD:
            break;
        default:
            g_assert_not_reached ();
            break;
        }

#ifdef HAVE_LIBNOTIFY
        downloaded = g_strdup_printf (_("The file “%s” has been downloaded."), name);
        show_notification (dv, _("Download finished"), downloaded);
        g_free (downloaded);
#endif
        downloader_view_remove_download (dv, download);

        return;
    case WEBKIT_DOWNLOAD_STATUS_STARTED:
        percent = (int) (webkit_download_get_progress (download) * 100);
        remaining_seconds = ephy_download_get_remaining_time (download);
        break;
    default:
        break;
    }

    if (total != -1 && current != -1)
    {
        char *total_progress;

        total_progress = g_format_size_for_display (total);
        /* translators: first %s is filename, "%s of %s" is current/total file size */
        file = g_strdup_printf (_("%s\n%s of %s"), name,
                    cur_progress, total_progress);
        g_free (total_progress);
    }
    else if (current != -1)
    {
        file = g_strdup_printf ("%s\n%s", name, cur_progress);
    }
    else
    {
        file = g_strdup_printf ("%s\n%s", name, _("Unknown"));
    }

    if (remaining_seconds < 0)
    {
        remaining = g_strdup (_("Unknown"));
    }
    else
    {
        remaining = format_interval (remaining_seconds);
    }

    path = gtk_tree_row_reference_get_path (row_ref);
    gtk_tree_model_get_iter (dv->priv->model, &iter, path);
    gtk_list_store_set (GTK_LIST_STORE (dv->priv->model),
                &iter,
                COL_STATUS, status,
                COL_PERCENT, percent,
                COL_FILE, file,
                COL_REMAINING, remaining,
                -1);
    gtk_tree_path_free (path);

    g_free (name);
    g_free (cur_progress);
    g_free (file);
    g_free (remaining);
}

static void
update_status_icon (DownloaderView *dv)
{
    char *downloadstring;
    int downloads;

    downloads = g_hash_table_size (dv->priv->downloads_hash);

    downloadstring = g_strdup_printf (ngettext ("%d download", 
                                                    "%d downloads", downloads), 
                                          downloads);

    gtk_status_icon_set_tooltip_text (dv->priv->status_icon,
                      downloadstring);
    g_free (downloadstring);
}

static void
download_progress_cb (WebKitDownload *download, GParamSpec *pspec, DownloaderView *dv)
{
    update_download_row (dv, download);
}

static void
download_status_changed_cb (WebKitDownload *download, GParamSpec *pspec, DownloaderView *dv)
{
        /* We already have handlers for progress and cancel/error, so
         * we only handle finished here.
         */
        if (webkit_download_get_status (download) == WEBKIT_DOWNLOAD_STATUS_FINISHED)
                update_download_row (dv, download);
}

static gboolean
download_error_cb (WebKitDownload *download, gint error_code, gint error_detail, const gchar *reason, DownloaderView *dv)
{
    update_download_row (dv, download);

    return FALSE;
}

static gboolean
update_buttons_timeout_cb (DownloaderView *dv)
{
    update_buttons (dv);
    
    dv->priv->source_id = 0;
    return FALSE;
}

void
downloader_view_add_download (DownloaderView *dv,
                  WebKitDownload *download)
{
    GtkTreeRowReference *row_ref;
    GtkTreeIter iter;
    GtkTreeSelection *selection;
    GtkTreePath *path;
#if 0
    GtkIconTheme *theme;
    GtkIconInfo *icon_info;
    GdkPixbuf *pixbuf;
    char *mime, *icon_name;
    int width = 16, height = 16;
#endif
    gboolean visible = FALSE;

    /* dv may be unrefed inside update_download_row if the file
     * downloaded completely while the user was choosing where to
     * put it, so we need to protect it.
     */
    g_object_ref (dv);
    g_object_ref (download);

    gtk_list_store_append (GTK_LIST_STORE (dv->priv->model),
                   &iter);
    gtk_list_store_set (GTK_LIST_STORE (dv->priv->model),
                &iter, COL_DOWNLOAD_OBJECT, download, -1);

    path =  gtk_tree_model_get_path (GTK_TREE_MODEL (dv->priv->model), &iter);
    row_ref = gtk_tree_row_reference_new (GTK_TREE_MODEL (dv->priv->model), path);
    gtk_tree_path_free (path);

    g_hash_table_insert (dv->priv->downloads_hash,
                 download,
                 row_ref);

    update_status_icon (dv);

    selection = gtk_tree_view_get_selection
        (GTK_TREE_VIEW (dv->priv->treeview));
    gtk_tree_selection_unselect_all (selection);
    gtk_tree_selection_select_iter (selection, &iter);

    g_signal_connect_object (download, "notify::progress",
                 G_CALLBACK (download_progress_cb), dv, 0);

    g_signal_connect_object (download, "notify::status",
                 G_CALLBACK (download_status_changed_cb), dv, 0);

    g_signal_connect_object (download, "error",
                 G_CALLBACK (download_error_cb), dv, 0);

    update_download_row (dv, download);

    /* Show it already */
    g_object_get (G_OBJECT (dv->priv->window), "visible", &visible, NULL);

    /* In the previous update_download_row() (or handlers) the download
     * might have finished, if that's the case, we have nothing else to do.
     * A notification of the finished download will pop to inform the user
     * there was success. */
    if (g_hash_table_size (dv->priv->downloads_hash) < 1)
    {
        ephy_dialog_hide (EPHY_DIALOG (dv));
        return;
    }
    
    if (eel_gconf_get_boolean (CONF_DOWNLOADS_HIDDEN) && !visible)
    {
#ifdef HAVE_LIBNOTIFY
        char *name;
        char *downloading;

        name = ephy_download_get_name (download);
        downloading = g_strdup_printf(_("The file “%s” has been added to the downloads queue."), name);
        
        show_notification (dv, _("Download started"), downloading);

        g_free (name);
        g_free (downloading);
#endif

        ephy_dialog_hide (EPHY_DIALOG (dv));
    }
    else
    {
        ephy_dialog_show (EPHY_DIALOG (dv));
    }

#if 0
        // FIXMEchpe port this to use GIcon when webkit gets download support
    mime =  ephy_download_get_mime (download);

    theme = gtk_icon_theme_get_default ();
    icon_name = gnome_icon_lookup (theme, NULL, NULL, NULL, NULL,
                       mime, GNOME_ICON_LOOKUP_FLAGS_NONE, NULL);
    g_free (mime);
    
    gtk_icon_size_lookup_for_settings (gtk_widget_get_settings (GTK_WIDGET (dv->priv->window)),
                       GTK_ICON_SIZE_MENU, &width, &height);
    width *= 2;

    icon_info = gtk_icon_theme_lookup_icon (theme, icon_name, width, 0);
    g_free (icon_name);
    if (icon_info == NULL) return;

    pixbuf = gdk_pixbuf_new_from_file_at_size
        (gtk_icon_info_get_filename (icon_info), width, width, NULL);
    gtk_icon_info_free (icon_info);

    gtk_list_store_set (GTK_LIST_STORE (dv->priv->model),
                &iter, COL_IMAGE, pixbuf, -1);
    if (pixbuf != NULL)
    {
        g_object_unref (pixbuf);
    }
#endif

    if (dv->priv->source_id == 0)
        dv->priv->source_id = g_timeout_add (100, (GSourceFunc) update_buttons_timeout_cb, dv);
}

static void
selection_changed (GtkTreeSelection *selection, DownloaderView *dv)
{
    update_buttons (dv);
}

static void
progress_cell_data_func (GtkTreeViewColumn *col,
             GtkCellRenderer   *renderer,
             GtkTreeModel      *model,
             GtkTreeIter       *iter,
             gpointer           user_data)
{
    WebKitDownloadStatus status;
    const char *text = NULL;
    int percent;

    gtk_tree_model_get (model, iter,
                COL_STATUS, &status,
                COL_PERCENT, &percent,
                -1);

    switch (status)
    {
        case WEBKIT_DOWNLOAD_STATUS_CREATED:
            text = C_("download status", "Unknown");
            break;
        case WEBKIT_DOWNLOAD_STATUS_ERROR:
            text = C_("download status", "Failed");
            break;
        case WEBKIT_DOWNLOAD_STATUS_CANCELLED:
            text = C_("download status", "Cancelled");
        case WEBKIT_DOWNLOAD_STATUS_STARTED:
            if (percent == -1)
            {
                text = C_("download status", "Unknown");
                percent = 0;
            }
            break;
        default:
            g_return_if_reached ();
    }

    g_object_set (renderer, "text", text, "value", percent, NULL);
}

static void
downloader_view_build_ui (DownloaderView *dv)
{
    DownloaderViewPrivate *priv = dv->priv;
    GtkListStore *liststore;
    GtkTreeViewColumn *column;
    GtkCellRenderer *renderer;
    EphyDialog *d = EPHY_DIALOG (dv);
    GtkTreeSelection *selection;

    ephy_dialog_construct (d,
                   properties,
                   ephy_file ("epiphany.ui"),
                   "download_manager_dialog",
                   NULL);

    /* lookup needed widgets */
    ephy_dialog_get_controls
        (d,
         properties[PROP_WINDOW].id, &priv->window,
         properties[PROP_TREEVIEW].id, &priv->treeview,
         properties[PROP_PAUSE_BUTTON].id, &priv->pause_button,
         properties[PROP_ABORT_BUTTON].id, &priv->abort_button,
         NULL);

    g_signal_connect (priv->window, "response",
              G_CALLBACK (download_dialog_response_cb), dv);
    g_signal_connect (priv->window, "delete-event",
              G_CALLBACK (download_dialog_delete_event_cb), dv);

    gtk_tree_selection_set_mode (gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->treeview)),
                     GTK_SELECTION_BROWSE);

    liststore = gtk_list_store_new (6,
                    G_TYPE_INT,
                    G_TYPE_INT,
                    GDK_TYPE_PIXBUF,
                    G_TYPE_STRING,
                    G_TYPE_STRING,
                    G_TYPE_OBJECT);

    gtk_tree_view_set_model (GTK_TREE_VIEW(priv->treeview),
                 GTK_TREE_MODEL (liststore));
    g_object_unref (liststore);
    gtk_tree_view_set_headers_visible (GTK_TREE_VIEW(priv->treeview),
                       TRUE);
    /* Icon and filename column*/
    column = gtk_tree_view_column_new ();
    gtk_tree_view_column_set_title (column, _("File"));
    renderer = gtk_cell_renderer_pixbuf_new ();
    g_object_set (renderer, "xpad", 3, NULL);
    gtk_tree_view_column_pack_start (column, renderer, FALSE);
    gtk_tree_view_column_set_attributes (column, renderer,
                        "pixbuf", COL_IMAGE,
                        NULL);
    renderer = gtk_cell_renderer_text_new ();
    g_object_set (renderer, "ellipsize", PANGO_ELLIPSIZE_MIDDLE, NULL);
    gtk_tree_view_column_pack_start (column, renderer, TRUE);
    gtk_tree_view_column_set_attributes (column, renderer,
                         "text", COL_FILE,
                         NULL);
    gtk_tree_view_insert_column (GTK_TREE_VIEW (priv->treeview), column, FILE_COL_POS);
    gtk_tree_view_column_set_expand (column, TRUE);
    gtk_tree_view_column_set_resizable (column, TRUE);
    gtk_tree_view_column_set_sort_column_id (column, COL_FILE);
    gtk_tree_view_column_set_spacing (column, 3);

    /* Progress column */
    renderer = gtk_cell_renderer_progress_new ();
    g_object_set (renderer, "xalign", 0.5, NULL);
    gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW(priv->treeview),
                             PROGRESS_COL_POS, _("%"),
                             renderer,
                             NULL);
    column = gtk_tree_view_get_column (GTK_TREE_VIEW(priv->treeview), PROGRESS_COL_POS);
    gtk_tree_view_column_set_cell_data_func(column, renderer, progress_cell_data_func, NULL, NULL);
    gtk_tree_view_column_set_sort_column_id (column, COL_PERCENT);

    /* Remainng time column */
    renderer = gtk_cell_renderer_text_new ();
    g_object_set (renderer, "xalign", 0.5, NULL);
    gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW(priv->treeview),
                             REMAINING_COL_POS, _("Remaining"),
                             renderer,
                             "text", COL_REMAINING,
                             NULL);

    column = gtk_tree_view_get_column (GTK_TREE_VIEW(priv->treeview),
                       REMAINING_COL_POS);
    gtk_tree_view_column_set_sort_column_id (column, COL_REMAINING);

    gtk_tree_view_set_enable_search (GTK_TREE_VIEW (priv->treeview), FALSE);

    priv->model = GTK_TREE_MODEL (liststore);

    gtk_window_set_icon_name (GTK_WINDOW (priv->window), STOCK_DOWNLOAD);

    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->treeview));
    gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
    g_signal_connect (selection, "changed", G_CALLBACK (selection_changed), dv);
}

static void
download_dialog_pause (DownloaderView *dv)
{
    GtkTreeSelection *selection;
    GtkTreeModel *model;
    GtkTreeIter iter;
    GValue val = {0, };
    WebKitDownload *download;
    WebKitDownloadStatus status;

    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW(dv->priv->treeview));

    if (!gtk_tree_selection_get_selected (selection, &model, &iter)) return;

    gtk_tree_model_get_value (model, &iter, COL_DOWNLOAD_OBJECT, &val);
    download = g_value_get_object (&val);

    status = webkit_download_get_status (download);

    g_warning ("Pause/resume not implemented");

    g_value_unset (&val);

    update_buttons (dv);
}

void
downloader_view_remove_download (DownloaderView *dv, WebKitDownload *download)
{
    GtkTreeRowReference *row_ref;
    GtkTreePath *path = NULL;
    GtkTreeIter iter, iter2;

    row_ref = get_row_from_download (dv, download);
    g_return_if_fail (row_ref);

    /* Get the row we'll select after removal ("smart" selection) */
    
    path = gtk_tree_row_reference_get_path (row_ref);
    gtk_tree_model_get_iter (GTK_TREE_MODEL (dv->priv->model),
                 &iter, path);
    gtk_tree_path_free (path);

    row_ref = NULL;
    iter2 = iter;            
    if (gtk_tree_model_iter_next (GTK_TREE_MODEL (dv->priv->model), &iter))
    {
        path = gtk_tree_model_get_path  (GTK_TREE_MODEL (dv->priv->model), &iter);
        row_ref = gtk_tree_row_reference_new (GTK_TREE_MODEL (dv->priv->model), path);
    }
    else
    {
        path = gtk_tree_model_get_path (GTK_TREE_MODEL (dv->priv->model), &iter2);
        if (gtk_tree_path_prev (path))
        {
            row_ref = gtk_tree_row_reference_new (GTK_TREE_MODEL (dv->priv->model),
                                  path);
        }
    }
    gtk_tree_path_free (path);

    /* Removal */

    gtk_list_store_remove (GTK_LIST_STORE (dv->priv->model), &iter2);
    g_hash_table_remove (dv->priv->downloads_hash, download);
    remove_download (download, NULL, dv);

    /* Actual selection */

    if (row_ref != NULL)
    {
        path = gtk_tree_row_reference_get_path (row_ref);
        if (path != NULL)
        {
            gtk_tree_view_set_cursor (GTK_TREE_VIEW (dv->priv->treeview),
                          path, NULL, FALSE);
            gtk_tree_path_free (path);
        }
        gtk_tree_row_reference_free (row_ref);
    }

    update_status_icon (dv);

    /* Close the dialog if there are no more downloads */
    if (!g_hash_table_size (dv->priv->downloads_hash))
    {
        gtk_widget_set_sensitive (dv->priv->abort_button, FALSE);
        gtk_widget_set_sensitive (dv->priv->pause_button, FALSE);
        ephy_dialog_hide (EPHY_DIALOG (dv));

        if (dv->priv->ownref)
        {
            dv->priv->ownref = FALSE;
            g_object_unref (dv);
        }
    }
}

static void
download_dialog_stop (DownloaderView *dv)
{
    GtkTreeSelection *selection;
    GtkTreeIter iter;
    GtkTreeModel *model;
    GList *selected = NULL;
    GList *downloads = NULL;
    GList *l = NULL;
    WebKitDownload *download;

    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW(dv->priv->treeview));
    model = gtk_tree_view_get_model (GTK_TREE_VIEW(dv->priv->treeview));
    
    selected = gtk_tree_selection_get_selected_rows (selection, &model);
    
    for (l = selected; l; l = l->next)
    {
        if (!gtk_tree_model_get_iter (model, &iter, l->data)) continue;
        
        gtk_tree_model_get (model, &iter, COL_DOWNLOAD_OBJECT, &download, -1);
        downloads = g_list_append (downloads, download);
    }
    
    /* We have to kill the downloads separately (not in the previous for) 
     * because otherwise selection would change.
     */
    for (l = downloads; l; l = l->next)
    {
        if (!l->data) continue;
        webkit_download_cancel ((WebKitDownload*) l->data);
        ephy_file_delete_uri (webkit_download_get_destination_uri ((WebKitDownload*) l->data));
        g_object_unref (l->data);
    }
    
    g_list_foreach (selected, (GFunc) gtk_tree_path_free, NULL);
    g_list_free (selected);
    g_list_free (downloads);
}

static void
download_dialog_response_cb (GtkWidget *dialog,
                 int response,
                 DownloaderView *dv)
{
    if (response == RESPONSE_PAUSE)
    {
        download_dialog_pause (dv);
    }
    else if (response == RESPONSE_STOP)
    {
        download_dialog_stop (dv);
    }
}

static gboolean
download_dialog_delete_event_cb (GtkWidget *window,
                 GdkEventAny *event,
                 DownloaderView *dv)
{
    DownloaderViewPrivate *priv = dv->priv;

    if (gtk_status_icon_is_embedded (priv->status_icon))
    {
        gtk_widget_hide (window);
    }

    return TRUE;
}