/*
 * This file Copyright (C) Mnemosyne LLC
 *
 * This file is licensed by the GPL version 2. Works owned by the
 * Transmission project are granted a special exemption to clause 2(b)
 * so that the bulk of its code can remain under the MIT license.
 * This exemption does not extend to derived works not owned by
 * the Transmission project.
 *
 * $Id: details.c 12997 2011-10-20 00:37:39Z jordan $
 */

#include <stddef.h>
#include <stdio.h> /* sscanf() */
#include <stdlib.h> /* abort() */
#include <glib/gi18n.h>
#include <gtk/gtk.h>

#include <libtransmission/transmission.h>
#include <libtransmission/utils.h> /* tr_free */

#include "actions.h"
#include "conf.h"
#include "details.h"
#include "favicon.h" /* gtr_get_favicon() */
#include "file-list.h"
#include "hig.h"
#include "tr-prefs.h"
#include "util.h"

static GQuark ARG_KEY = 0;
static GQuark DETAILS_KEY = 0;
static GQuark TORRENT_ID_KEY = 0;
static GQuark TEXT_BUFFER_KEY = 0;
static GQuark URL_ENTRY_KEY = 0;

struct DetailsImpl
{
    GtkWidget * dialog;

    GtkWidget * honor_limits_check;
    GtkWidget * up_limited_check;
    GtkWidget * up_limit_sping;
    GtkWidget * down_limited_check;
    GtkWidget * down_limit_spin;
    GtkWidget * bandwidth_combo;

    GtkWidget * ratio_combo;
    GtkWidget * ratio_spin;
    GtkWidget * idle_combo;
    GtkWidget * idle_spin;
    GtkWidget * max_peers_spin;

    gulong honor_limits_check_tag;
    gulong up_limited_check_tag;
    gulong down_limited_check_tag;
    gulong down_limit_spin_tag;
    gulong up_limit_spin_tag;
    gulong bandwidth_combo_tag;
    gulong ratio_combo_tag;
    gulong ratio_spin_tag;
    gulong idle_combo_tag;
    gulong idle_spin_tag;
    gulong max_peers_spin_tag;

    GtkWidget * size_lb;
    GtkWidget * state_lb;
    GtkWidget * have_lb;
    GtkWidget * dl_lb;
    GtkWidget * ul_lb;
    GtkWidget * error_lb;
    GtkWidget * date_started_lb;
    GtkWidget * eta_lb;
    GtkWidget * last_activity_lb;

    GtkWidget * hash_lb;
    GtkWidget * privacy_lb;
    GtkWidget * origin_lb;
    GtkWidget * destination_lb;
    GtkTextBuffer * comment_buffer;

    GHashTable * peer_hash;
    GHashTable * webseed_hash;
    GtkListStore * peer_store;
    GtkListStore * webseed_store;
    GtkWidget * webseed_view;
    GtkWidget * peer_view;
    GtkWidget * more_peer_details_check;

    GtkListStore  * tracker_store;
    GHashTable    * tracker_hash;
    GtkTreeModel  * trackers_filtered;
    GtkWidget     * add_tracker_button;
    GtkWidget     * edit_trackers_button;
    GtkWidget     * remove_tracker_button;
    GtkWidget     * tracker_view;
    GtkWidget     * scrape_check;
    GtkWidget     * all_check;

    GtkWidget * file_list;
    GtkWidget * file_label;

    GSList * ids;
    TrCore * core;
    guint periodic_refresh_tag;

    GString * gstr;
};

static tr_torrent**
getTorrents( struct DetailsImpl * d, int * setmeCount )
{
    GSList * l;
    int torrentCount = 0;
    const int n = g_slist_length( d->ids );
    tr_torrent ** torrents = g_new( tr_torrent*, n );

    for( l=d->ids; l!=NULL; l=l->next )
        if(( torrents[torrentCount] = gtr_core_find_torrent( d->core, GPOINTER_TO_INT( l->data ))))
            ++torrentCount;

    *setmeCount = torrentCount;
    return torrents;
}

/****
*****
*****  OPTIONS TAB
*****
****/

static void
set_togglebutton_if_different( GtkWidget * w, gulong tag, gboolean value )
{
    GtkToggleButton * toggle = GTK_TOGGLE_BUTTON( w );
    const gboolean currentValue = gtk_toggle_button_get_active( toggle );
    if( currentValue != value )
    {
        g_signal_handler_block( toggle, tag );
        gtk_toggle_button_set_active( toggle, value );
        g_signal_handler_unblock( toggle, tag );
    }
}

static void
set_int_spin_if_different( GtkWidget * w, gulong tag, int value )
{
    GtkSpinButton * spin = GTK_SPIN_BUTTON( w );
    const int currentValue = gtk_spin_button_get_value_as_int( spin );
    if( currentValue != value )
    {
        g_signal_handler_block( spin, tag );
        gtk_spin_button_set_value( spin, value );
        g_signal_handler_unblock( spin, tag );
    }
}

static void
set_double_spin_if_different( GtkWidget * w, gulong tag, double value )
{
    GtkSpinButton * spin = GTK_SPIN_BUTTON( w );
    const double currentValue = gtk_spin_button_get_value( spin );
    if( ( (int)(currentValue*100) != (int)(value*100) ) )
    {
        g_signal_handler_block( spin, tag );
        gtk_spin_button_set_value( spin, value );
        g_signal_handler_unblock( spin, tag );
    }
}

static void
unset_combo( GtkWidget * w, gulong tag )
{
    GtkComboBox * combobox = GTK_COMBO_BOX( w );

    g_signal_handler_block( combobox, tag );
    gtk_combo_box_set_active( combobox, -1 );
    g_signal_handler_unblock( combobox, tag );
}

static void
refreshOptions( struct DetailsImpl * di, tr_torrent ** torrents, int n )
{
    /***
    ****  Options Page
    ***/

    /* honor_limits_check */
    if( n ) {
        const bool baseline = tr_torrentUsesSessionLimits( torrents[0] );
        int i;
        for( i=1; i<n; ++i )
            if( baseline != tr_torrentUsesSessionLimits( torrents[i] ) )
                break;
        if( i == n )
            set_togglebutton_if_different( di->honor_limits_check,
                                           di->honor_limits_check_tag, baseline );
    }

    /* down_limited_check */
    if( n ) {
        const bool baseline = tr_torrentUsesSpeedLimit( torrents[0], TR_DOWN );
        int i;
        for( i=1; i<n; ++i )
            if( baseline != tr_torrentUsesSpeedLimit( torrents[i], TR_DOWN ) )
                break;
        if( i == n )
            set_togglebutton_if_different( di->down_limited_check,
                                           di->down_limited_check_tag, baseline );
    }

    /* down_limit_spin */
    if( n ) {
        const int baseline = tr_torrentGetSpeedLimit_KBps( torrents[0], TR_DOWN );
        int i;
        for( i=1; i<n; ++i )
            if( baseline != ( tr_torrentGetSpeedLimit_KBps( torrents[i], TR_DOWN ) ) )
                break;
        if( i == n )
            set_int_spin_if_different( di->down_limit_spin,
                                       di->down_limit_spin_tag, baseline );
    }

    /* up_limited_check */
    if( n ) {
        const bool baseline = tr_torrentUsesSpeedLimit( torrents[0], TR_UP );
        int i;
        for( i=1; i<n; ++i )
            if( baseline != tr_torrentUsesSpeedLimit( torrents[i], TR_UP ) )
                break;
        if( i == n )
            set_togglebutton_if_different( di->up_limited_check,
                                           di->up_limited_check_tag, baseline );
    }

    /* up_limit_sping */
    if( n ) {
        const int baseline = tr_torrentGetSpeedLimit_KBps( torrents[0], TR_UP );
        int i;
        for( i=1; i<n; ++i )
            if( baseline != ( tr_torrentGetSpeedLimit_KBps( torrents[i], TR_UP ) ) )
                break;
        if( i == n )
            set_int_spin_if_different( di->up_limit_sping,
                                       di->up_limit_spin_tag, baseline );
    }

    /* bandwidth_combo */
    if( n ) {
        const int baseline = tr_torrentGetPriority( torrents[0] );
        int i;
        for( i=1; i<n; ++i )
            if( baseline != tr_torrentGetPriority( torrents[i] ) )
                break;
        if( i == n ) {
            GtkWidget * w = di->bandwidth_combo;
            g_signal_handler_block( w, di->bandwidth_combo_tag );
            gtr_priority_combo_set_value( GTK_COMBO_BOX( w ), baseline );
            g_signal_handler_unblock( w, di->bandwidth_combo_tag );
        }
        else
            unset_combo( di->bandwidth_combo, di->bandwidth_combo_tag );
    }

    /* ratio_combo */
    /* ratio_spin */
    if( n ) {
        int i;
        const int baseline = tr_torrentGetRatioMode( torrents[0] );
        for( i=1; i<n; ++i )
            if( baseline != (int)tr_torrentGetRatioMode( torrents[i] ) )
                break;
        if( i == n ) {
            GtkWidget * w = di->ratio_combo;
            g_signal_handler_block( w, di->ratio_combo_tag );
            gtr_combo_box_set_active_enum( GTK_COMBO_BOX( w ), baseline );
            gtr_widget_set_visible( di->ratio_spin, baseline == TR_RATIOLIMIT_SINGLE );
            g_signal_handler_unblock( w, di->ratio_combo_tag );
        }
    }
    if( n ) {
        const double baseline = tr_torrentGetRatioLimit( torrents[0] );
        set_double_spin_if_different( di->ratio_spin,
                                      di->ratio_spin_tag, baseline );
    }

    /* idle_combo */
    /* idle_spin */
    if( n ) {
        int i;
        const int baseline = tr_torrentGetIdleMode( torrents[0] );
        for( i=1; i<n; ++i )
            if( baseline != (int)tr_torrentGetIdleMode( torrents[i] ) )
                break;
        if( i == n ) {
            GtkWidget * w = di->idle_combo;
            g_signal_handler_block( w, di->idle_combo_tag );
            gtr_combo_box_set_active_enum( GTK_COMBO_BOX( w ), baseline );
            gtr_widget_set_visible( di->idle_spin, baseline == TR_IDLELIMIT_SINGLE );
            g_signal_handler_unblock( w, di->idle_combo_tag );
        }
    }
    if( n ) {
        const int baseline = tr_torrentGetIdleLimit( torrents[0] );
        set_int_spin_if_different( di->idle_spin,
                                   di->idle_spin_tag, baseline );
    }

    /* max_peers_spin */
    if( n ) {
        const int baseline = tr_torrentGetPeerLimit( torrents[0] );
        set_int_spin_if_different( di->max_peers_spin,
                                   di->max_peers_spin_tag, baseline );
    }
}

static void
torrent_set_bool( struct DetailsImpl * di, const char * key, gboolean value )
{
    GSList *l;
    tr_benc top, *args, *ids;

    tr_bencInitDict( &top, 2 );
    tr_bencDictAddStr( &top, "method", "torrent-set" );
    args = tr_bencDictAddDict( &top, "arguments", 2 );
    tr_bencDictAddBool( args, key, value );
    ids = tr_bencDictAddList( args, "ids", g_slist_length(di->ids) );
    for( l=di->ids; l; l=l->next )
        tr_bencListAddInt( ids, GPOINTER_TO_INT( l->data ) );

    gtr_core_exec( di->core, &top );
    tr_bencFree( &top );
}

static void
torrent_set_int( struct DetailsImpl * di, const char * key, int value )
{
    GSList *l;
    tr_benc top, *args, *ids;

    tr_bencInitDict( &top, 2 );
    tr_bencDictAddStr( &top, "method", "torrent-set" );
    args = tr_bencDictAddDict( &top, "arguments", 2 );
    tr_bencDictAddInt( args, key, value );
    ids = tr_bencDictAddList( args, "ids", g_slist_length(di->ids) );
    for( l=di->ids; l; l=l->next )
        tr_bencListAddInt( ids, GPOINTER_TO_INT( l->data ) );

    gtr_core_exec( di->core, &top );
    tr_bencFree( &top );
}

static void
torrent_set_real( struct DetailsImpl * di, const char * key, double value )
{
    GSList *l;
    tr_benc top, *args, *ids;

    tr_bencInitDict( &top, 2 );
    tr_bencDictAddStr( &top, "method", "torrent-set" );
    args = tr_bencDictAddDict( &top, "arguments", 2 );
    tr_bencDictAddReal( args, key, value );
    ids = tr_bencDictAddList( args, "ids", g_slist_length(di->ids) );
    for( l=di->ids; l; l=l->next )
        tr_bencListAddInt( ids, GPOINTER_TO_INT( l->data ) );

    gtr_core_exec( di->core, &top );
    tr_bencFree( &top );
}

static void
up_speed_toggled_cb( GtkToggleButton * tb, gpointer d )
{
    torrent_set_bool( d, "uploadLimited", gtk_toggle_button_get_active( tb ) );
}

static void
down_speed_toggled_cb( GtkToggleButton *tb, gpointer d )
{
    torrent_set_bool( d, "downloadLimited", gtk_toggle_button_get_active( tb ) );
}

static void
global_speed_toggled_cb( GtkToggleButton * tb, gpointer d )
{
    torrent_set_bool( d, "honorsSessionLimits", gtk_toggle_button_get_active( tb ) );
}

static void
up_speed_spun_cb( GtkSpinButton * s, struct DetailsImpl * di )
{
    torrent_set_int( di, "uploadLimit", gtk_spin_button_get_value_as_int( s ) );
}

static void
down_speed_spun_cb( GtkSpinButton * s, struct DetailsImpl * di )
{
    torrent_set_int( di, "downloadLimit", gtk_spin_button_get_value_as_int( s ) );
}

static void
idle_spun_cb( GtkSpinButton * s, struct DetailsImpl * di )
{
    torrent_set_int( di, "seedIdleLimit", gtk_spin_button_get_value_as_int( s ) );
}

static void
ratio_spun_cb( GtkSpinButton * s, struct DetailsImpl * di )
{
    torrent_set_real( di, "seedRatioLimit", gtk_spin_button_get_value( s ) );
}

static void
max_peers_spun_cb( GtkSpinButton * s, struct DetailsImpl * di )
{
    torrent_set_int( di, "peer-limit", gtk_spin_button_get_value( s ) );
}

static void
onPriorityChanged( GtkComboBox * combo_box, struct DetailsImpl * di )
{
    const tr_priority_t priority = gtr_priority_combo_get_value( combo_box );
    torrent_set_int( di, "bandwidthPriority", priority );
}

static GtkWidget*
new_priority_combo( struct DetailsImpl * di )
{
    GtkWidget * w = gtr_priority_combo_new( );
    di->bandwidth_combo_tag = g_signal_connect( w, "changed", G_CALLBACK( onPriorityChanged ), di );
    return w;
}

static void refresh( struct DetailsImpl * di );

static void
onComboEnumChanged( GtkComboBox * combo_box, struct DetailsImpl * di )
{
    const char * key = g_object_get_qdata( G_OBJECT( combo_box ), ARG_KEY );
    torrent_set_int( di, key, gtr_combo_box_get_active_enum( combo_box ) );
    refresh( di );
}

static GtkWidget*
ratio_combo_new( void )
{
    GtkWidget * w = gtr_combo_box_new_enum(
        _( "Use global settings" ),       TR_RATIOLIMIT_GLOBAL,
        _( "Seed regardless of ratio" ),  TR_RATIOLIMIT_UNLIMITED,
        _( "Stop seeding at ratio:" ),    TR_RATIOLIMIT_SINGLE,
        NULL );
    g_object_set_qdata( G_OBJECT( w ), ARG_KEY, (gpointer)"seedRatioMode" );
    return w;
}

static GtkWidget*
idle_combo_new( void )
{
    GtkWidget * w = gtr_combo_box_new_enum (
        _( "Use global settings" ),                 TR_IDLELIMIT_GLOBAL,
        _( "Seed regardless of activity" ),         TR_IDLELIMIT_UNLIMITED,
        _( "Stop seeding if idle for N minutes:" ), TR_IDLELIMIT_SINGLE,
        NULL );
    g_object_set_qdata( G_OBJECT( w ), ARG_KEY, (gpointer)"seedIdleMode" );
    return w;
}

static GtkWidget*
options_page_new( struct DetailsImpl * d )
{
    guint row;
    gulong tag;
    char buf[128];
    GtkWidget *t, *w, *tb, *h;

    row = 0;
    t = hig_workarea_create( );
    hig_workarea_add_section_title( t, &row, _( "Speed" ) );

    tb = hig_workarea_add_wide_checkbutton( t, &row, _( "Honor global _limits" ), 0 );
    d->honor_limits_check = tb;
    tag = g_signal_connect( tb, "toggled", G_CALLBACK( global_speed_toggled_cb ), d );
    d->honor_limits_check_tag = tag;

    g_snprintf( buf, sizeof( buf ), _( "Limit _download speed (%s):" ), _(speed_K_str) );
    tb = gtk_check_button_new_with_mnemonic( buf );
    gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON( tb ), FALSE );
    d->down_limited_check = tb;
    tag = g_signal_connect( tb, "toggled", G_CALLBACK( down_speed_toggled_cb ), d );
    d->down_limited_check_tag = tag;

    w = gtk_spin_button_new_with_range( 0, INT_MAX, 5 );
    tag = g_signal_connect( w, "value-changed", G_CALLBACK( down_speed_spun_cb ), d );
    d->down_limit_spin_tag = tag;
    hig_workarea_add_row_w( t, &row, tb, w, NULL );
    d->down_limit_spin = w;

    g_snprintf( buf, sizeof( buf ), _( "Limit _upload speed (%s):" ), _(speed_K_str) );
    tb = gtk_check_button_new_with_mnemonic( buf );
    d->up_limited_check = tb;
    tag = g_signal_connect( tb, "toggled", G_CALLBACK( up_speed_toggled_cb ), d );
    d->up_limited_check_tag = tag;

    w = gtk_spin_button_new_with_range( 0, INT_MAX, 5 );
    tag = g_signal_connect( w, "value-changed", G_CALLBACK( up_speed_spun_cb ), d );
    d->up_limit_spin_tag = tag;
    hig_workarea_add_row_w( t, &row, tb, w, NULL );
    d->up_limit_sping = w;

    w = new_priority_combo( d );
    hig_workarea_add_row( t, &row, _( "Torrent _priority:" ), w, NULL );
    d->bandwidth_combo = w;

    hig_workarea_add_section_divider( t, &row );
    hig_workarea_add_section_title( t, &row, _( "Seeding Limits" ) );

    h = gtr_hbox_new( FALSE, GUI_PAD );
    w = d->ratio_combo = ratio_combo_new( );
    d->ratio_combo_tag = g_signal_connect( w, "changed", G_CALLBACK( onComboEnumChanged ), d );
    gtk_box_pack_start( GTK_BOX( h ), w, TRUE, TRUE, 0 );
    w = d->ratio_spin = gtk_spin_button_new_with_range( 0, 1000, .05 );
    gtk_entry_set_width_chars( GTK_ENTRY( w ), 7 );
    d->ratio_spin_tag = g_signal_connect( w, "value-changed", G_CALLBACK( ratio_spun_cb ), d );
    gtk_box_pack_start( GTK_BOX( h ), w, FALSE, FALSE, 0 );
    hig_workarea_add_row( t, &row, _( "_Ratio:" ), h, NULL );

    h = gtr_hbox_new( FALSE, GUI_PAD );
    w = d->idle_combo = idle_combo_new( );
    d->idle_combo_tag = g_signal_connect( w, "changed", G_CALLBACK( onComboEnumChanged ), d );
    gtk_box_pack_start( GTK_BOX( h ), w, TRUE, TRUE, 0 );
    w = d->idle_spin = gtk_spin_button_new_with_range( 1, INT_MAX, 5 );
    d->idle_spin_tag = g_signal_connect( w, "value-changed", G_CALLBACK( idle_spun_cb ), d );
    gtk_box_pack_start( GTK_BOX( h ), w, FALSE, FALSE, 0 );
    hig_workarea_add_row( t, &row, _( "_Idle:" ), h, NULL );

    hig_workarea_add_section_divider( t, &row );
    hig_workarea_add_section_title( t, &row, _( "Peer Connections" ) );

    w = gtk_spin_button_new_with_range( 1, 3000, 5 );
    hig_workarea_add_row( t, &row, _( "_Maximum peers:" ), w, w );
    tag = g_signal_connect( w, "value-changed", G_CALLBACK( max_peers_spun_cb ), d );
    d->max_peers_spin = w;
    d->max_peers_spin_tag = tag;

    hig_workarea_finish( t, &row );
    return t;
}

/****
*****
*****  INFO TAB
*****
****/

static const char *
activityString( int activity, bool finished )
{
    switch( activity )
    {
        case TR_STATUS_CHECK_WAIT:    return _( "Queued for verification" );
        case TR_STATUS_CHECK:         return _( "Verifying local data" );
        case TR_STATUS_DOWNLOAD_WAIT: return _( "Queued for download" );
        case TR_STATUS_DOWNLOAD:      return _( "Downloading" );
        case TR_STATUS_SEED_WAIT:     return _( "Queued for seeding" );
        case TR_STATUS_SEED:          return _( "Seeding" );
        case TR_STATUS_STOPPED:       return finished ? _( "Finished" ) : _( "Paused" );
    }

    return "";
}

/* Only call gtk_text_buffer_set_text() if the new text differs from the old.
 * This way if the user has text selected, refreshing won't deselect it */
static void
gtr_text_buffer_set_text( GtkTextBuffer * b, const char * str )
{
    char * old_str;
    GtkTextIter start, end;

    if( str == NULL )
        str = "";

    gtk_text_buffer_get_bounds( b, &start, &end );
    old_str = gtk_text_buffer_get_text( b, &start, &end, FALSE );

    if( ( old_str == NULL ) || strcmp( old_str, str ) )
        gtk_text_buffer_set_text( b, str, -1 );

    g_free( old_str );
}

static char*
get_short_date_string( time_t t )
{
    char buf[64];
    struct tm tm;

    if( !t )
        return g_strdup( _( "N/A" ) );

    tr_localtime_r( &t, &tm );
    strftime( buf, sizeof( buf ), "%d %b %Y", &tm );
    return g_locale_to_utf8( buf, -1, NULL, NULL, NULL );
};

static void
refreshInfo( struct DetailsImpl * di, tr_torrent ** torrents, int n )
{
    int i;
    const char * str;
    const char * mixed = _( "Mixed" );
    const char * no_torrent = _( "No Torrents Selected" );
    const char * stateString;
    char buf[512];
    uint64_t sizeWhenDone = 0;
    const tr_stat ** stats = g_new( const tr_stat*, n );
    const tr_info ** infos = g_new( const tr_info*, n );
    for( i=0; i<n; ++i ) {
        stats[i] = tr_torrentStatCached( torrents[i] );
        infos[i] = tr_torrentInfo( torrents[i] );
    }

    /* privacy_lb */
    if( n<=0 )
        str = no_torrent;
    else {
        const bool baseline = infos[0]->isPrivate;
        for( i=1; i<n; ++i )
            if( baseline != infos[i]->isPrivate )
                break;
        if( i!=n )
            str = mixed;
        else if( baseline )
            str = _( "Private to this tracker -- DHT and PEX disabled" );
        else
            str = _( "Public torrent" );
    }
    gtr_label_set_text( GTK_LABEL( di->privacy_lb ), str );


    /* origin_lb */
    if( n<=0 )
        str = no_torrent;
    else {
        const char * creator = infos[0]->creator ? infos[0]->creator : "";
        const time_t date = infos[0]->dateCreated;
        char * datestr = get_short_date_string( date );
        gboolean mixed_creator = FALSE;
        gboolean mixed_date = FALSE;

        for( i=1; i<n; ++i ) {
            mixed_creator |= strcmp( creator, infos[i]->creator ? infos[i]->creator : "" );
            mixed_date |= ( date != infos[i]->dateCreated );
        }
        if( mixed_date && mixed_creator )
            str = mixed;
        else {
            if( mixed_date )
                g_snprintf( buf, sizeof( buf ), _( "Created by %1$s" ), creator );
            else if( mixed_creator || !*creator )
                g_snprintf( buf, sizeof( buf ), _( "Created on %1$s" ), datestr );
            else
                g_snprintf( buf, sizeof( buf ), _( "Created by %1$s on %2$s" ), creator, datestr );
            str = buf;
        }

        g_free( datestr );
    }
    gtr_label_set_text( GTK_LABEL( di->origin_lb ), str );


    /* comment_buffer */
    if( n<=0 )
        str = "";
    else {
        const char * baseline = infos[0]->comment ? infos[0]->comment : "";
        for( i=1; i<n; ++i )
            if( strcmp( baseline, infos[i]->comment ? infos[i]->comment : "" ) )
                break;
        if( i==n )
            str = baseline;
        else
            str = mixed;
    }
    gtr_text_buffer_set_text( di->comment_buffer, str );

    /* destination_lb */
    if( n<=0 )
        str = no_torrent;
    else {
        const char * baseline = tr_torrentGetDownloadDir( torrents[0] );
        for( i=1; i<n; ++i )
            if( strcmp( baseline, tr_torrentGetDownloadDir( torrents[i] ) ) )
                break;
        if( i==n )
            str = baseline;
        else
            str = mixed;
    }
    gtr_label_set_text( GTK_LABEL( di->destination_lb ), str );

    /* state_lb */
    if( n<=0 )
        str = no_torrent;
    else {
        const tr_torrent_activity activity = stats[0]->activity;
        bool allFinished = stats[0]->finished;
        for( i=1; i<n; ++i ) {
            if( activity != stats[i]->activity )
                break;
            if( !stats[i]->finished )
                allFinished = FALSE;
        }
        str = i<n ? mixed : activityString( activity, allFinished );
    }
    stateString = str;
    gtr_label_set_text( GTK_LABEL( di->state_lb ), str );


    /* date started */
    if( n<=0 )
        str = no_torrent;
    else {
        const time_t baseline = stats[0]->startDate;
        for( i=1; i<n; ++i )
            if( baseline != stats[i]->startDate )
                break;
        if( i != n )
            str = mixed;
        else if( ( baseline<=0 ) || ( stats[0]->activity == TR_STATUS_STOPPED ) )
            str = stateString;
        else
            str = tr_strltime( buf, time(NULL)-baseline, sizeof( buf ) );
    }
    gtr_label_set_text( GTK_LABEL( di->date_started_lb ), str );


    /* eta */
    if( n<=0 )
        str = no_torrent;
    else {
        const int baseline = stats[0]->eta;
        for( i=1; i<n; ++i )
            if( baseline != stats[i]->eta )
                break;
        if( i!=n )
            str = mixed;
        else if( baseline < 0 )
            str = _( "Unknown" );
        else
            str = tr_strltime( buf, baseline, sizeof( buf ) );
    }
    gtr_label_set_text( GTK_LABEL( di->eta_lb ), str );


    /* size_lb */
    {
        char sizebuf[128];
        uint64_t size = 0;
        int pieces = 0;
        int32_t pieceSize = 0;
        for( i=0; i<n; ++i ) {
            size += infos[i]->totalSize;
            pieces += infos[i]->pieceCount;
            if( !pieceSize )
                pieceSize = infos[i]->pieceSize;
            else if( pieceSize != (int)infos[i]->pieceSize )
                pieceSize = -1;
        }
        tr_strlsize( sizebuf, size, sizeof( sizebuf ) );
        if( !size )
            str = "";
        else if( pieceSize >= 0 ) {
            char piecebuf[128];
            tr_formatter_mem_B( piecebuf, pieceSize, sizeof( piecebuf ) );
            g_snprintf( buf, sizeof( buf ),
                        ngettext( "%1$s (%2$'d piece @ %3$s)",
                                      "%1$s (%2$'d pieces @ %3$s)", pieces ),
                        sizebuf, pieces, piecebuf );
            str = buf;
        } else {
            g_snprintf( buf, sizeof( buf ),
                        ngettext( "%1$s (%2$'d piece)",
                                      "%1$s (%2$'d pieces)", pieces ),
                        sizebuf, pieces );
            str = buf;
        }
        gtr_label_set_text( GTK_LABEL( di->size_lb ), str );
    }


    /* have_lb */
    if( n <= 0 )
        str = no_torrent;
    else {
        uint64_t leftUntilDone = 0;
        uint64_t haveUnchecked = 0;
        uint64_t haveValid = 0;
        uint32_t verifiedPieces = 0;
        uint64_t available = 0;
        for( i=0; i<n; ++i ) {
            const tr_stat * st = stats[i];
            const tr_info * inf = infos[i];
            haveUnchecked += st->haveUnchecked;
            haveValid += st->haveValid;
            verifiedPieces += inf->pieceSize ? st->haveValid / inf->pieceSize : 0;
            sizeWhenDone += st->sizeWhenDone;
            leftUntilDone += st->leftUntilDone;
            available += st->sizeWhenDone - st->leftUntilDone + st->desiredAvailable;
        }
        {
            char buf2[32], unver[64], total[64], avail[32];
            const double d = sizeWhenDone ? ( 100.0 * available ) / sizeWhenDone : 0;
            const double ratio = 100.0 * ( sizeWhenDone ? ( haveValid + haveUnchecked ) / (double)sizeWhenDone : 1 );
            tr_strlpercent( avail, d, sizeof( avail ) );
            tr_strlpercent( buf2, ratio, sizeof( buf2 ) );
            tr_strlsize( total, haveUnchecked + haveValid, sizeof( total ) );
            tr_strlsize( unver, haveUnchecked,             sizeof( unver ) );
            if( !haveUnchecked && !leftUntilDone )
                g_snprintf( buf, sizeof( buf ), _( "%1$s (%2$s%%)" ), total, buf2 );
            else if( !haveUnchecked )
                g_snprintf( buf, sizeof( buf ), _( "%1$s (%2$s%% of %3$s%% Available)" ), total, buf2, avail );
            else
                g_snprintf( buf, sizeof( buf ), _( "%1$s (%2$s%% of %3$s%% Available); %4$s Unverified" ), total, buf2, avail, unver );
            str = buf;
        }
    }
    gtr_label_set_text( GTK_LABEL( di->have_lb ), str );

    /* dl_lb */
    if( n <= 0 )
        str = no_torrent;
    else {
        char dbuf[64], fbuf[64];
        uint64_t d=0, f=0;
        for( i=0; i<n; ++i ) {
            d += stats[i]->downloadedEver;
            f += stats[i]->corruptEver;
        }
        tr_strlsize( dbuf, d, sizeof( dbuf ) );
        tr_strlsize( fbuf, f, sizeof( fbuf ) );
        if( f )
            g_snprintf( buf, sizeof( buf ), _( "%1$s (+%2$s corrupt)" ), dbuf, fbuf );
        else
            tr_strlcpy( buf, dbuf, sizeof( buf ) );
        str = buf;
    }
    gtr_label_set_text( GTK_LABEL( di->dl_lb ), str );


    /* ul_lb */
    if( n <= 0 )
        str = no_torrent;
    else {
        char upstr[64];
        char ratiostr[64];
        uint64_t up = 0;
        uint64_t down = 0;
        for( i=0; i<n; ++i ) {
            up += stats[i]->uploadedEver;
            down += stats[i]->downloadedEver;
        }
        tr_strlsize( upstr, up, sizeof( upstr ) );
        tr_strlratio( ratiostr, tr_getRatio( up, down ), sizeof( ratiostr ) );
        g_snprintf( buf, sizeof( buf ), _( "%s (Ratio: %s)" ), upstr, ratiostr );
        str = buf;
    }
    gtr_label_set_text( GTK_LABEL( di->ul_lb ), str );

    /* hash_lb */
    if( n <= 0 )
        str = no_torrent;
    else if ( n==1 )
        str = infos[0]->hashString;
    else
        str = mixed;
    gtr_label_set_text( GTK_LABEL( di->hash_lb ), str );

    /* error */
    if( n <= 0 )
        str = no_torrent;
    else {
        const char * baseline = stats[0]->errorString;
        for( i=1; i<n; ++i )
            if( strcmp( baseline, stats[i]->errorString ) )
                break;
        if( i==n )
            str = baseline;
        else
            str = mixed;
    }
    if( !str || !*str )
        str = _( "No errors" );
    gtr_label_set_text( GTK_LABEL( di->error_lb ), str );


    /* activity date */
    if( n <= 0 )
        str = no_torrent;
    else {
        time_t latest = 0;
        for( i=0; i<n; ++i )
            if( latest < stats[i]->activityDate )
                latest = stats[i]->activityDate;
        if( latest <= 0 )
            str = _( "Never" );
        else {
            const int period = time( NULL ) - latest;
            if( period < 5 )
                tr_strlcpy( buf, _( "Active now" ), sizeof( buf ) );
            else {
                char tbuf[128];
                tr_strltime( tbuf, period, sizeof( tbuf ) );
                g_snprintf( buf, sizeof( buf ), _( "%1$s ago" ), tbuf );
            }
            str = buf;
        }
    }
    gtr_label_set_text( GTK_LABEL( di->last_activity_lb ), str );

    g_free( stats );
    g_free( infos );
}

static GtkWidget*
info_page_new( struct DetailsImpl * di )
{
    guint row = 0;
    GtkTextBuffer * b;
    GtkWidget *l, *w, *fr, *sw;
    GtkWidget *t = hig_workarea_create( );

    hig_workarea_add_section_title( t, &row, _( "Activity" ) );

        /* size */
        l = di->size_lb = gtk_label_new( NULL );
        gtk_label_set_single_line_mode( GTK_LABEL( l ), TRUE );
        hig_workarea_add_row( t, &row, _( "Torrent size:" ), l, NULL );

        /* have */
        l = di->have_lb = gtk_label_new( NULL );
        gtk_label_set_single_line_mode( GTK_LABEL( l ), TRUE );
        hig_workarea_add_row( t, &row, _( "Have:" ), l, NULL );

        /* downloaded */
        l = di->dl_lb = gtk_label_new( NULL );
        gtk_label_set_single_line_mode( GTK_LABEL( l ), TRUE );
        hig_workarea_add_row( t, &row, _( "Downloaded:" ), l, NULL );

        /* uploaded */
        l = di->ul_lb = gtk_label_new( NULL );
        gtk_label_set_single_line_mode( GTK_LABEL( l ), TRUE );
        hig_workarea_add_row( t, &row, _( "Uploaded:" ), l, NULL );

        /* state */
        l = di->state_lb = gtk_label_new( NULL );
        gtk_label_set_single_line_mode( GTK_LABEL( l ), TRUE );
        hig_workarea_add_row( t, &row, _( "State:" ), l, NULL );

        /* running for */
        l = di->date_started_lb = gtk_label_new( NULL );
        gtk_label_set_single_line_mode( GTK_LABEL( l ), TRUE );
        hig_workarea_add_row( t, &row, _( "Running time:" ), l, NULL );

        /* eta */
        l = di->eta_lb = gtk_label_new( NULL );
        gtk_label_set_single_line_mode( GTK_LABEL( l ), TRUE );
        hig_workarea_add_row( t, &row, _( "Remaining time:" ), l, NULL );

        /* last activity */
        l = di->last_activity_lb = gtk_label_new( NULL );
        gtk_label_set_single_line_mode( GTK_LABEL( l ), TRUE );
        hig_workarea_add_row( t, &row, _( "Last activity:" ), l, NULL );

        /* error */
        l = g_object_new( GTK_TYPE_LABEL, "selectable", TRUE,
                                          "ellipsize", PANGO_ELLIPSIZE_END,
                                          NULL );
        hig_workarea_add_row( t, &row, _( "Error:" ), l, NULL );
        di->error_lb = l;


    hig_workarea_add_section_divider( t, &row );
    hig_workarea_add_section_title( t, &row, _( "Details" ) );

        /* destination */
        l = g_object_new( GTK_TYPE_LABEL, "selectable", TRUE,
                                          "ellipsize", PANGO_ELLIPSIZE_END,
                                          NULL );
        hig_workarea_add_row( t, &row, _( "Location:" ), l, NULL );
        di->destination_lb = l;

        /* hash */
        l = g_object_new( GTK_TYPE_LABEL, "selectable", TRUE,
                                          "ellipsize", PANGO_ELLIPSIZE_END,
                                           NULL );
        hig_workarea_add_row( t, &row, _( "Hash:" ), l, NULL );
        di->hash_lb = l;

        /* privacy */
        l = gtk_label_new( NULL );
        gtk_label_set_single_line_mode( GTK_LABEL( l ), TRUE );
        hig_workarea_add_row( t, &row, _( "Privacy:" ), l, NULL );
        di->privacy_lb = l;

        /* origins */
        l = g_object_new( GTK_TYPE_LABEL, "selectable", TRUE,
                                          "ellipsize", PANGO_ELLIPSIZE_END,
                                          NULL );
        hig_workarea_add_row( t, &row, _( "Origin:" ), l, NULL );
        di->origin_lb = l;

        /* comment */
        b = di->comment_buffer = gtk_text_buffer_new( NULL );
        w = gtk_text_view_new_with_buffer( b );
        gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( w ), GTK_WRAP_WORD );
        gtk_text_view_set_editable( GTK_TEXT_VIEW( w ), FALSE );
        sw = gtk_scrolled_window_new( NULL, NULL );
        gtk_widget_set_size_request( sw, 350, 36 );
        gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( sw ),
                                        GTK_POLICY_AUTOMATIC,
                                        GTK_POLICY_AUTOMATIC );
        gtk_container_add( GTK_CONTAINER( sw ), w );
        fr = gtk_frame_new( NULL );
        gtk_frame_set_shadow_type( GTK_FRAME( fr ), GTK_SHADOW_IN );
        gtk_container_add( GTK_CONTAINER( fr ), sw );
        w = hig_workarea_add_tall_row( t, &row, _( "Comment:" ), fr, NULL );
        gtk_misc_set_alignment( GTK_MISC( w ), 0.0f, 0.0f );

    hig_workarea_add_section_divider( t, &row );
    hig_workarea_finish( t, &row );
    return t;

    hig_workarea_finish( t, &row );
    return t;
}

/****
*****
*****  PEERS TAB
*****
****/

enum
{
    WEBSEED_COL_KEY,
    WEBSEED_COL_WAS_UPDATED,
    WEBSEED_COL_URL,
    WEBSEED_COL_DOWNLOAD_RATE_DOUBLE,
    WEBSEED_COL_DOWNLOAD_RATE_STRING,
    N_WEBSEED_COLS
};

static const char*
getWebseedColumnNames( int column )
{
    switch( column )
    {
        case WEBSEED_COL_URL: return _( "Webseeds" );
        case WEBSEED_COL_DOWNLOAD_RATE_DOUBLE:
        case WEBSEED_COL_DOWNLOAD_RATE_STRING: return _( "Down" );
        default: return "";
    }
}

static GtkListStore*
webseed_model_new( void )
{
    return gtk_list_store_new( N_WEBSEED_COLS,
                               G_TYPE_STRING,   /* key */
                               G_TYPE_BOOLEAN,  /* was-updated */
                               G_TYPE_STRING,   /* url */
                               G_TYPE_DOUBLE,   /* download rate double */
                               G_TYPE_STRING ); /* download rate string */
}

enum
{
    PEER_COL_KEY,
    PEER_COL_WAS_UPDATED,
    PEER_COL_ADDRESS,
    PEER_COL_ADDRESS_COLLATED,
    PEER_COL_DOWNLOAD_RATE_DOUBLE,
    PEER_COL_DOWNLOAD_RATE_STRING,
    PEER_COL_UPLOAD_RATE_DOUBLE,
    PEER_COL_UPLOAD_RATE_STRING,
    PEER_COL_CLIENT,
    PEER_COL_PROGRESS,
    PEER_COL_UPLOAD_REQUEST_COUNT_INT,
    PEER_COL_UPLOAD_REQUEST_COUNT_STRING,
    PEER_COL_DOWNLOAD_REQUEST_COUNT_INT,
    PEER_COL_DOWNLOAD_REQUEST_COUNT_STRING,
    PEER_COL_BLOCKS_DOWNLOADED_COUNT_INT,
    PEER_COL_BLOCKS_DOWNLOADED_COUNT_STRING,
    PEER_COL_BLOCKS_UPLOADED_COUNT_INT,
    PEER_COL_BLOCKS_UPLOADED_COUNT_STRING,
    PEER_COL_REQS_CANCELLED_BY_CLIENT_COUNT_INT,
    PEER_COL_REQS_CANCELLED_BY_CLIENT_COUNT_STRING,
    PEER_COL_REQS_CANCELLED_BY_PEER_COUNT_INT,
    PEER_COL_REQS_CANCELLED_BY_PEER_COUNT_STRING,
    PEER_COL_ENCRYPTION_STOCK_ID,
    PEER_COL_FLAGS,
    PEER_COL_TORRENT_NAME,
    N_PEER_COLS
};

static const char*
getPeerColumnName( int column )
{
    switch( column )
    {
        case PEER_COL_ADDRESS: return _( "Address" );
        case PEER_COL_DOWNLOAD_RATE_STRING:
        case PEER_COL_DOWNLOAD_RATE_DOUBLE: return _( "Down" );
        case PEER_COL_UPLOAD_RATE_STRING:
        case PEER_COL_UPLOAD_RATE_DOUBLE: return _( "Up" );
        case PEER_COL_CLIENT: return _( "Client" );
        case PEER_COL_PROGRESS: return _( "%" );
        case PEER_COL_UPLOAD_REQUEST_COUNT_INT:
        case PEER_COL_UPLOAD_REQUEST_COUNT_STRING: return _( "Up Reqs" );
        case PEER_COL_DOWNLOAD_REQUEST_COUNT_INT:
        case PEER_COL_DOWNLOAD_REQUEST_COUNT_STRING: return _( "Dn Reqs" );
        case PEER_COL_BLOCKS_DOWNLOADED_COUNT_INT:
        case PEER_COL_BLOCKS_DOWNLOADED_COUNT_STRING: return _( "Dn Blocks" );
        case PEER_COL_BLOCKS_UPLOADED_COUNT_INT:
        case PEER_COL_BLOCKS_UPLOADED_COUNT_STRING: return _( "Up Blocks" );
        case PEER_COL_REQS_CANCELLED_BY_CLIENT_COUNT_INT:
        case PEER_COL_REQS_CANCELLED_BY_CLIENT_COUNT_STRING: return _( "We Cancelled" );
        case PEER_COL_REQS_CANCELLED_BY_PEER_COUNT_INT:
        case PEER_COL_REQS_CANCELLED_BY_PEER_COUNT_STRING: return _( "They Cancelled" );
        case PEER_COL_FLAGS: return _( "Flags" );
        default: return "";
    }
}

static GtkListStore*
peer_store_new( void )
{
    return gtk_list_store_new( N_PEER_COLS,
                               G_TYPE_STRING,   /* key */
                               G_TYPE_BOOLEAN,  /* was-updated */
                               G_TYPE_STRING,   /* address */
                               G_TYPE_STRING,   /* collated address */
                               G_TYPE_DOUBLE,   /* download speed int */
                               G_TYPE_STRING,   /* download speed string */
                               G_TYPE_DOUBLE,   /* upload speed int */
                               G_TYPE_STRING,   /* upload speed string  */
                               G_TYPE_STRING,   /* client */
                               G_TYPE_INT,      /* progress [0..100] */
                               G_TYPE_INT,      /* upload request count int */
                               G_TYPE_STRING,   /* upload request count string */
                               G_TYPE_INT,      /* download request count int */
                               G_TYPE_STRING,   /* download request count string */
                               G_TYPE_INT,      /* # blocks downloaded int */
                               G_TYPE_STRING,   /* # blocks downloaded string */
                               G_TYPE_INT,      /* # blocks uploaded int */
                               G_TYPE_STRING,   /* # blocks uploaded string */
                               G_TYPE_INT,      /* # blocks cancelled by client int */
                               G_TYPE_STRING,   /* # blocks cancelled by client string */
                               G_TYPE_INT,      /* # blocks cancelled by peer int */
                               G_TYPE_STRING,   /* # blocks cancelled by peer string */
                               G_TYPE_STRING,   /* encryption stock id */
                               G_TYPE_STRING,   /* flagString */
                               G_TYPE_STRING);  /* torrent name */
}

static void
initPeerRow( GtkListStore        * store,
             GtkTreeIter         * iter,
             const char          * key,
             const char          * torrentName,
             const tr_peer_stat  * peer )
{
    int q[4];
    char collated_name[128];
    const char * client = peer->client;

    if( !client || !strcmp( client, "Unknown Client" ) )
        client = "";

    if( sscanf( peer->addr, "%d.%d.%d.%d", q, q+1, q+2, q+3 ) != 4 )
        g_strlcpy( collated_name, peer->addr, sizeof( collated_name ) );
    else
        g_snprintf( collated_name, sizeof( collated_name ),
                    "%03d.%03d.%03d.%03d", q[0], q[1], q[2], q[3] );

    gtk_list_store_set( store, iter,
                        PEER_COL_ADDRESS, peer->addr,
                        PEER_COL_ADDRESS_COLLATED, collated_name,
                        PEER_COL_CLIENT, client,
                        PEER_COL_ENCRYPTION_STOCK_ID, peer->isEncrypted ? "transmission-lock" : NULL,
                        PEER_COL_KEY, key,
                        PEER_COL_TORRENT_NAME, torrentName,
                        -1 );
}

static void
refreshPeerRow( GtkListStore        * store,
                GtkTreeIter         * iter,
                const tr_peer_stat  * peer )
{
    char up_speed[64] = { '\0' };
    char down_speed[64] = { '\0' };
    char up_count[64] = { '\0' };
    char down_count[64] = { '\0' };
    char blocks_to_peer[64] = { '\0' };
    char blocks_to_client[64] = { '\0' };
    char cancelled_by_peer[64] = { '\0' };
    char cancelled_by_client[64] = { '\0' };

    if( peer->rateToPeer_KBps > 0.01 )
        tr_formatter_speed_KBps( up_speed, peer->rateToPeer_KBps, sizeof( up_speed ) );

    if( peer->rateToClient_KBps > 0 )
        tr_formatter_speed_KBps( down_speed, peer->rateToClient_KBps, sizeof( down_speed ) );

    if( peer->pendingReqsToPeer > 0 )
        g_snprintf( down_count, sizeof( down_count ), "%d", peer->pendingReqsToPeer );

    if( peer->pendingReqsToClient > 0 )
        g_snprintf( up_count, sizeof( down_count ), "%d", peer->pendingReqsToClient );

    if( peer->blocksToPeer > 0 )
        g_snprintf( blocks_to_peer, sizeof( blocks_to_peer ), "%"PRIu32, peer->blocksToPeer );

    if( peer->blocksToClient > 0 )
        g_snprintf( blocks_to_client, sizeof( blocks_to_client ), "%"PRIu32, peer->blocksToClient );

    if( peer->cancelsToPeer > 0 )
        g_snprintf( cancelled_by_client, sizeof( cancelled_by_client ), "%"PRIu32, peer->cancelsToPeer );

    if( peer->cancelsToClient > 0 )
        g_snprintf( cancelled_by_peer, sizeof( cancelled_by_peer ), "%"PRIu32, peer->cancelsToClient );

    gtk_list_store_set( store, iter,
        PEER_COL_PROGRESS, (int)( 100.0 * peer->progress ),
        PEER_COL_UPLOAD_REQUEST_COUNT_INT, peer->pendingReqsToClient,
        PEER_COL_UPLOAD_REQUEST_COUNT_STRING, up_count,
        PEER_COL_DOWNLOAD_REQUEST_COUNT_INT, peer->pendingReqsToPeer,
        PEER_COL_DOWNLOAD_REQUEST_COUNT_STRING, down_count,
        PEER_COL_DOWNLOAD_RATE_DOUBLE, peer->rateToClient_KBps,
        PEER_COL_DOWNLOAD_RATE_STRING, down_speed,
        PEER_COL_UPLOAD_RATE_DOUBLE, peer->rateToPeer_KBps,
        PEER_COL_UPLOAD_RATE_STRING, up_speed,
        PEER_COL_FLAGS, peer->flagStr,
        PEER_COL_WAS_UPDATED, TRUE,
        PEER_COL_BLOCKS_DOWNLOADED_COUNT_INT, (int)peer->blocksToClient,
        PEER_COL_BLOCKS_DOWNLOADED_COUNT_STRING, blocks_to_client,
        PEER_COL_BLOCKS_UPLOADED_COUNT_INT, (int)peer->blocksToPeer,
        PEER_COL_BLOCKS_UPLOADED_COUNT_STRING, blocks_to_peer,
        PEER_COL_REQS_CANCELLED_BY_CLIENT_COUNT_INT, (int)peer->cancelsToPeer,
        PEER_COL_REQS_CANCELLED_BY_CLIENT_COUNT_STRING, cancelled_by_client,
        PEER_COL_REQS_CANCELLED_BY_PEER_COUNT_INT, (int)peer->cancelsToClient,
        PEER_COL_REQS_CANCELLED_BY_PEER_COUNT_STRING, cancelled_by_peer,
        -1 );
}

static void
refreshPeerList( struct DetailsImpl * di, tr_torrent ** torrents, int n )
{
    int i;
    int * peerCount;
    GtkTreeIter iter;
    GtkTreeModel * model;
    GHashTable * hash = di->peer_hash;
    GtkListStore * store = di->peer_store;
    struct tr_peer_stat ** peers;

    /* step 1: get all the peers */
    peers = g_new( struct tr_peer_stat*, n );
    peerCount = g_new( int, n );
    for( i=0; i<n; ++i )
        peers[i] = tr_torrentPeers( torrents[i], &peerCount[i] );

    /* step 2: mark all the peers in the list as not-updated */
    model = GTK_TREE_MODEL( store );
    if( gtk_tree_model_iter_nth_child( model, &iter, NULL, 0 ) ) do
        gtk_list_store_set( store, &iter, PEER_COL_WAS_UPDATED, FALSE, -1 );
    while( gtk_tree_model_iter_next( model, &iter ) );

    /* step 3: add any new peers */
    for( i=0; i<n; ++i ) {
        int j;
        const tr_torrent * tor = torrents[i];
        for( j=0; j<peerCount[i]; ++j ) {
            const tr_peer_stat * s = &peers[i][j];
            char key[128];
            g_snprintf( key, sizeof(key), "%d.%s", tr_torrentId(tor), s->addr );
            if( g_hash_table_lookup( hash, key ) == NULL ) {
                GtkTreePath * p;
                gtk_list_store_append( store, &iter );
                initPeerRow( store, &iter, key, tr_torrentName( tor ), s );
                p = gtk_tree_model_get_path( model, &iter );
                g_hash_table_insert( hash, g_strdup( key ),
                                     gtk_tree_row_reference_new( model, p ) );
                gtk_tree_path_free( p );
            }
        }
    }

    /* step 4: update the peers */
    for( i=0; i<n; ++i ) {
        int j;
        const tr_torrent * tor = torrents[i];
        for( j=0; j<peerCount[i]; ++j ) {
            const tr_peer_stat * s = &peers[i][j];
            char key[128];
            GtkTreeRowReference * ref;
            GtkTreePath * p;
            g_snprintf( key, sizeof(key), "%d.%s", tr_torrentId(tor), s->addr );
            ref = g_hash_table_lookup( hash, key );
            p = gtk_tree_row_reference_get_path( ref );
            gtk_tree_model_get_iter( model, &iter, p );
            refreshPeerRow( store, &iter, s );
            gtk_tree_path_free( p );
        }
    }

    /* step 5: remove peers that have disappeared */
    model = GTK_TREE_MODEL( store );
    if( gtk_tree_model_iter_nth_child( model, &iter, NULL, 0 ) ) {
        gboolean more = TRUE;
        while( more ) {
            gboolean b;
            gtk_tree_model_get( model, &iter, PEER_COL_WAS_UPDATED, &b, -1 );
            if( b )
                more = gtk_tree_model_iter_next( model, &iter );
            else {
                char * key;
                gtk_tree_model_get( model, &iter, PEER_COL_KEY, &key, -1 );
                g_hash_table_remove( hash, key );
                more = gtk_list_store_remove( store, &iter );
                g_free( key );
            }
        }
    }

    /* step 6: cleanup */
    for( i=0; i<n; ++i )
        tr_torrentPeersFree( peers[i], peerCount[i] );
    tr_free( peers );
    tr_free( peerCount );
}

static void
refreshWebseedList( struct DetailsImpl * di, tr_torrent ** torrents, int n )
{
    int i;
    int total = 0;
    GtkTreeIter iter;
    GHashTable * hash = di->webseed_hash;
    GtkListStore * store = di->webseed_store;
    GtkTreeModel * model = GTK_TREE_MODEL( store );

    /* step 1: mark all webseeds as not-updated */
    if( gtk_tree_model_iter_nth_child( model, &iter, NULL, 0 ) ) do
        gtk_list_store_set( store, &iter, WEBSEED_COL_WAS_UPDATED, FALSE, -1 );
    while( gtk_tree_model_iter_next( model, &iter ) );

    /* step 2: add any new webseeds */
    for( i=0; i<n; ++i ) {
        int j;
        const tr_torrent * tor = torrents[i];
        const tr_info * inf = tr_torrentInfo( tor );
        total += inf->webseedCount;
        for( j=0; j<inf->webseedCount; ++j ) {
            char key[256];
            const char * url = inf->webseeds[j];
            g_snprintf( key, sizeof(key), "%d.%s", tr_torrentId( tor ), url );
            if( g_hash_table_lookup( hash, key ) == NULL ) {
                GtkTreePath * p;
                gtk_list_store_append( store, &iter );
                gtk_list_store_set( store, &iter, WEBSEED_COL_URL, url,
                                                  WEBSEED_COL_KEY, key,
                                                  -1 );
                p = gtk_tree_model_get_path( model, &iter );
                g_hash_table_insert( hash, g_strdup( key ),
                                     gtk_tree_row_reference_new( model, p ) );
                gtk_tree_path_free( p );
            }
        }
    }

    /* step 3: update the webseeds */
    for( i=0; i<n; ++i ) {
        int j;
        const tr_torrent * tor = torrents[i];
        const tr_info * inf = tr_torrentInfo( tor );
        double * speeds_KBps = tr_torrentWebSpeeds_KBps( tor );
        for( j=0; j<inf->webseedCount; ++j ) {
            char buf[128];
            char key[256];
            const char * url = inf->webseeds[j];
            GtkTreePath * p;
            GtkTreeRowReference * ref;
            g_snprintf( key, sizeof(key), "%d.%s", tr_torrentId( tor ), url );
            ref = g_hash_table_lookup( hash, key );
            p = gtk_tree_row_reference_get_path( ref );
            gtk_tree_model_get_iter( model, &iter, p );
            if( speeds_KBps[j] > 0 )
                tr_formatter_speed_KBps( buf, speeds_KBps[j], sizeof( buf ) );
            else
                *buf = '\0';
            gtk_list_store_set( store, &iter,
                WEBSEED_COL_DOWNLOAD_RATE_DOUBLE, speeds_KBps[j],
                WEBSEED_COL_DOWNLOAD_RATE_STRING, buf,
                WEBSEED_COL_WAS_UPDATED, TRUE,
                -1 );
            gtk_tree_path_free( p );
        }
        tr_free( speeds_KBps );
    }

    /* step 4: remove webseeds that have disappeared */
    if( gtk_tree_model_iter_nth_child( model, &iter, NULL, 0 ) ) {
        gboolean more = TRUE;
        while( more ) {
            gboolean b;
            gtk_tree_model_get( model, &iter, WEBSEED_COL_WAS_UPDATED, &b, -1 );
            if( b )
                more = gtk_tree_model_iter_next( model, &iter );
            else {
                char * key;
                gtk_tree_model_get( model, &iter, WEBSEED_COL_KEY, &key, -1 );
                if( key != NULL )
                    g_hash_table_remove( hash, key );
                more = gtk_list_store_remove( store, &iter );
                g_free( key );
            }
        }
    }

    /* most of the time there are no webseeds...
       don't waste space showing an empty list */
    if( total > 0 )
        gtk_widget_show( di->webseed_view );
    else
        gtk_widget_hide( di->webseed_view );
}

static void
refreshPeers( struct DetailsImpl * di, tr_torrent ** torrents, int n )
{
    refreshPeerList( di, torrents, n );
    refreshWebseedList( di, torrents, n );
}

static gboolean
onPeerViewQueryTooltip( GtkWidget   * widget,
                        gint          x,
                        gint          y,
                        gboolean      keyboard_tip,
                        GtkTooltip  * tooltip,
                        gpointer      gdi )
{
    gboolean       show_tip = FALSE;
    GtkTreeModel * model;
    GtkTreeIter    iter;

    if( gtk_tree_view_get_tooltip_context( GTK_TREE_VIEW( widget ),
                                           &x, &y, keyboard_tip,
                                           &model, NULL, &iter ) )
    {
        struct DetailsImpl * di = gdi;
        const char * pch;
        char * name = NULL;
        char * addr = NULL;
        char * markup = NULL;
        char * flagstr = NULL;
        GString * gstr = di->gstr;
        gtk_tree_model_get( model, &iter, PEER_COL_TORRENT_NAME, &name,
                                          PEER_COL_ADDRESS, &addr,
                                          PEER_COL_FLAGS, &flagstr,
                                          -1 );

        g_string_truncate( gstr, 0 );
        markup = g_markup_escape_text( name, -1 );
        g_string_append_printf( gstr, "<b>%s</b>\n%s\n \n", markup, addr );
        g_free( markup );

        for( pch = flagstr; pch && *pch; ++pch )
        {
            const char * s = NULL;
            switch( *pch )
            {
                case 'O': s = _( "Optimistic unchoke" ); break;
                case 'D': s = _( "Downloading from this peer" ); break;
                case 'd': s = _( "We would download from this peer if they would let us" ); break;
                case 'U': s = _( "Uploading to peer" ); break;
                case 'u': s = _( "We would upload to this peer if they asked" ); break;
                case 'K': s = _( "Peer has unchoked us, but we're not interested" ); break;
                case '?': s = _( "We unchoked this peer, but they're not interested" ); break;
                case 'E': s = _( "Encrypted connection" ); break;
                case 'X': s = _( "Peer was found through Peer Exchange (PEX)" ); break;
                case 'H': s = _( "Peer was found through DHT" ); break;
                case 'I': s = _( "Peer is an incoming connection" ); break;
                case 'T': s = _( "Peer is connected over µTP" ); break;
            }
            if( s )
                g_string_append_printf( gstr, "%c: %s\n", *pch, s );
        }
        if( gstr->len ) /* remove the last linefeed */
            g_string_set_size( gstr, gstr->len - 1 );

        gtk_tooltip_set_markup( tooltip, gstr->str );

        g_free( flagstr );
        g_free( addr );
        g_free( name );
        show_tip = TRUE;
    }

    return show_tip;
}

static void
setPeerViewColumns( GtkTreeView * peer_view )
{
    int i;
    int n = 0;
    const bool more = gtr_pref_flag_get( PREF_KEY_SHOW_MORE_PEER_INFO );
    int view_columns[32];
    GtkTreeViewColumn * c;
    GtkCellRenderer *   r;

    view_columns[n++] = PEER_COL_ENCRYPTION_STOCK_ID;
    view_columns[n++] = PEER_COL_UPLOAD_RATE_STRING;
    if( more ) view_columns[n++] = PEER_COL_UPLOAD_REQUEST_COUNT_STRING;
    view_columns[n++] = PEER_COL_DOWNLOAD_RATE_STRING;
    if( more ) view_columns[n++] = PEER_COL_DOWNLOAD_REQUEST_COUNT_STRING;
    if( more ) view_columns[n++] = PEER_COL_BLOCKS_DOWNLOADED_COUNT_STRING;
    if( more ) view_columns[n++] = PEER_COL_BLOCKS_UPLOADED_COUNT_STRING;
    if( more ) view_columns[n++] = PEER_COL_REQS_CANCELLED_BY_CLIENT_COUNT_STRING;
    if( more ) view_columns[n++] = PEER_COL_REQS_CANCELLED_BY_PEER_COUNT_STRING;
    view_columns[n++] = PEER_COL_PROGRESS;
    view_columns[n++] = PEER_COL_FLAGS;
    view_columns[n++] = PEER_COL_ADDRESS;
    view_columns[n++] = PEER_COL_CLIENT;

    /* remove any existing columns */
    while(( c = gtk_tree_view_get_column( peer_view, 0 )))
        gtk_tree_view_remove_column( peer_view, c );

    for( i=0; i<n; ++i )
    {
        const int col = view_columns[i];
        const char * t = getPeerColumnName( col );
        int sort_col = col;

        switch( col )
        {
            case PEER_COL_ADDRESS:
                r = gtk_cell_renderer_text_new( );
                c = gtk_tree_view_column_new_with_attributes( t, r, "text", col, NULL );
                sort_col = PEER_COL_ADDRESS_COLLATED;
                break;

            case PEER_COL_CLIENT:
                r = gtk_cell_renderer_text_new( );
                c = gtk_tree_view_column_new_with_attributes( t, r, "text", col, NULL );
                break;

            case PEER_COL_PROGRESS:
                r = gtk_cell_renderer_progress_new( );
                c = gtk_tree_view_column_new_with_attributes( t, r, "value", PEER_COL_PROGRESS, NULL );
                break;

            case PEER_COL_ENCRYPTION_STOCK_ID:
                r = gtk_cell_renderer_pixbuf_new( );
                g_object_set( r, "xalign", (gfloat)0.0,
                                 "yalign", (gfloat)0.5,
                                 NULL );
                c = gtk_tree_view_column_new_with_attributes( t, r, "stock-id", PEER_COL_ENCRYPTION_STOCK_ID, NULL );
                gtk_tree_view_column_set_sizing( c, GTK_TREE_VIEW_COLUMN_FIXED );
                gtk_tree_view_column_set_fixed_width( c, 20 );
                break;

            case PEER_COL_DOWNLOAD_REQUEST_COUNT_STRING:
                r = gtk_cell_renderer_text_new( );
                c = gtk_tree_view_column_new_with_attributes( t, r, "text", col, NULL );
                sort_col = PEER_COL_DOWNLOAD_REQUEST_COUNT_INT;
                break;
            case PEER_COL_UPLOAD_REQUEST_COUNT_STRING:
                r = gtk_cell_renderer_text_new( );
                c = gtk_tree_view_column_new_with_attributes( t, r, "text", col, NULL );
                sort_col = PEER_COL_UPLOAD_REQUEST_COUNT_INT;
                break;

            case PEER_COL_BLOCKS_DOWNLOADED_COUNT_STRING:
                r = gtk_cell_renderer_text_new( );
                c = gtk_tree_view_column_new_with_attributes( t, r, "text", col, NULL );
                sort_col = PEER_COL_BLOCKS_DOWNLOADED_COUNT_INT;
                break;
            case PEER_COL_BLOCKS_UPLOADED_COUNT_STRING:
                r = gtk_cell_renderer_text_new( );
                c = gtk_tree_view_column_new_with_attributes( t, r, "text", col, NULL );
                sort_col = PEER_COL_BLOCKS_UPLOADED_COUNT_INT;
                break;

            case PEER_COL_REQS_CANCELLED_BY_CLIENT_COUNT_STRING:
                r = gtk_cell_renderer_text_new( );
                c = gtk_tree_view_column_new_with_attributes( t, r, "text", col, NULL );
                sort_col = PEER_COL_REQS_CANCELLED_BY_CLIENT_COUNT_INT;
                break;
            case PEER_COL_REQS_CANCELLED_BY_PEER_COUNT_STRING:
                r = gtk_cell_renderer_text_new( );
                c = gtk_tree_view_column_new_with_attributes( t, r, "text", col, NULL );
                sort_col = PEER_COL_REQS_CANCELLED_BY_PEER_COUNT_INT;
                break;

            case PEER_COL_DOWNLOAD_RATE_STRING:
                r = gtk_cell_renderer_text_new( );
                g_object_set( G_OBJECT( r ), "xalign", 1.0f, NULL );
                c = gtk_tree_view_column_new_with_attributes( t, r, "text", col, NULL );
                sort_col = PEER_COL_DOWNLOAD_RATE_DOUBLE;
                break;
            case PEER_COL_UPLOAD_RATE_STRING:
                r = gtk_cell_renderer_text_new( );
                g_object_set( G_OBJECT( r ), "xalign", 1.0f, NULL );
                c = gtk_tree_view_column_new_with_attributes( t, r, "text", col, NULL );
                sort_col = PEER_COL_UPLOAD_RATE_DOUBLE;
                break;

            case PEER_COL_FLAGS:
                r = gtk_cell_renderer_text_new( );
                c = gtk_tree_view_column_new_with_attributes( t, r, "text", col, NULL );
                break;

            default:
                abort( );
        }

        gtk_tree_view_column_set_resizable( c, FALSE );
        gtk_tree_view_column_set_sort_column_id( c, sort_col );
        gtk_tree_view_append_column( GTK_TREE_VIEW( peer_view ), c );
    }

    /* the 'expander' column has a 10-pixel margin on the left
       that doesn't look quite correct in any of these columns...
       so create a non-visible column and assign it as the
       'expander column. */
    {
        GtkTreeViewColumn *c = gtk_tree_view_column_new( );
        gtk_tree_view_column_set_visible( c, FALSE );
        gtk_tree_view_append_column( GTK_TREE_VIEW( peer_view ), c );
        gtk_tree_view_set_expander_column( GTK_TREE_VIEW( peer_view ), c );
    }
}

static void
onMorePeerInfoToggled( GtkToggleButton * button, struct DetailsImpl * di )
{
    const char * key = PREF_KEY_SHOW_MORE_PEER_INFO;
    const gboolean value = gtk_toggle_button_get_active( button );
    gtr_core_set_pref_bool( di->core, key, value );
    setPeerViewColumns( GTK_TREE_VIEW( di->peer_view ) );
}

static GtkWidget*
peer_page_new( struct DetailsImpl * di )
{
    gboolean b;
    const char * str;
    GtkListStore *store;
    GtkWidget *v, *w, *ret, *sw, *vbox;
    GtkWidget *webtree = NULL;
    GtkTreeModel * m;
    GtkTreeViewColumn * c;
    GtkCellRenderer *   r;

    /* webseeds */

    store = di->webseed_store = webseed_model_new( );
    v = gtk_tree_view_new_with_model( GTK_TREE_MODEL( store ) );
    g_signal_connect( v, "button-release-event", G_CALLBACK( on_tree_view_button_released ), NULL );
    gtk_tree_view_set_rules_hint( GTK_TREE_VIEW( v ), TRUE );
    g_object_unref( store );

    str = getWebseedColumnNames( WEBSEED_COL_URL );
    r = gtk_cell_renderer_text_new( );
    g_object_set( G_OBJECT( r ), "ellipsize", PANGO_ELLIPSIZE_END, NULL );
    c = gtk_tree_view_column_new_with_attributes( str, r, "text", WEBSEED_COL_URL, NULL );
    g_object_set( G_OBJECT( c ), "expand", TRUE, NULL );
    gtk_tree_view_column_set_sort_column_id( c, WEBSEED_COL_URL );
    gtk_tree_view_append_column( GTK_TREE_VIEW( v ), c );

    str = getWebseedColumnNames( WEBSEED_COL_DOWNLOAD_RATE_STRING );
    r = gtk_cell_renderer_text_new( );
    c = gtk_tree_view_column_new_with_attributes( str, r, "text", WEBSEED_COL_DOWNLOAD_RATE_STRING, NULL );
    gtk_tree_view_column_set_sort_column_id( c, WEBSEED_COL_DOWNLOAD_RATE_DOUBLE );
    gtk_tree_view_append_column( GTK_TREE_VIEW( v ), c );

    w = gtk_scrolled_window_new( NULL, NULL );
    gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( w ),
                                    GTK_POLICY_AUTOMATIC,
                                    GTK_POLICY_AUTOMATIC );
    gtk_scrolled_window_set_shadow_type( GTK_SCROLLED_WINDOW( w ),
                                         GTK_SHADOW_IN );
    gtk_container_add( GTK_CONTAINER( w ), v );

    webtree = w;
    di->webseed_view = w;

    /* peers */

    store  = di->peer_store = peer_store_new( );
    m = gtk_tree_model_sort_new_with_model( GTK_TREE_MODEL( store ) );
    gtk_tree_sortable_set_sort_column_id( GTK_TREE_SORTABLE( m ),
                                          PEER_COL_PROGRESS,
                                          GTK_SORT_DESCENDING );
    v = GTK_WIDGET( g_object_new( GTK_TYPE_TREE_VIEW,
                                  "model",  m,
                                  "rules-hint", TRUE,
                                  "has-tooltip", TRUE,
                                  NULL ) );
    di->peer_view = v;

    g_signal_connect( v, "query-tooltip",
                      G_CALLBACK( onPeerViewQueryTooltip ), di );
    g_object_unref( store );
    g_signal_connect( v, "button-release-event",
                      G_CALLBACK( on_tree_view_button_released ), NULL );

    setPeerViewColumns( GTK_TREE_VIEW( v ) );

    w = sw = gtk_scrolled_window_new( NULL, NULL );
    gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( w ),
                                    GTK_POLICY_AUTOMATIC,
                                    GTK_POLICY_AUTOMATIC );
    gtk_scrolled_window_set_shadow_type( GTK_SCROLLED_WINDOW( w ),
                                         GTK_SHADOW_IN );
    gtk_container_add( GTK_CONTAINER( w ), v );

    vbox = gtr_vbox_new( FALSE, GUI_PAD );
    gtk_container_set_border_width( GTK_CONTAINER( vbox ), GUI_PAD_BIG );

#if GTK_CHECK_VERSION(3,2,0)
    v = gtk_paned_new( GTK_ORIENTATION_VERTICAL );
#else
    v = gtk_vpaned_new( );
#endif
    gtk_paned_pack1( GTK_PANED( v ), webtree, FALSE, TRUE );
    gtk_paned_pack2( GTK_PANED( v ), sw, TRUE, TRUE );
    gtk_box_pack_start( GTK_BOX( vbox ), v, TRUE, TRUE, 0 );

    w = gtk_check_button_new_with_mnemonic( _( "Show _more details" ) );
    di->more_peer_details_check = w;
    b = gtr_pref_flag_get( PREF_KEY_SHOW_MORE_PEER_INFO );
    gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON( w ), b );
    g_signal_connect( w, "toggled", G_CALLBACK( onMorePeerInfoToggled ), di );
    gtk_box_pack_start( GTK_BOX( vbox ), w, FALSE, FALSE, 0 );


    /* ip-to-GtkTreeRowReference */
    di->peer_hash = g_hash_table_new_full( g_str_hash,
                                           g_str_equal,
                                           (GDestroyNotify)g_free,
                                           (GDestroyNotify)gtk_tree_row_reference_free );

    /* url-to-GtkTreeRowReference */
    di->webseed_hash = g_hash_table_new_full( g_str_hash,
                                              g_str_equal,
                                              (GDestroyNotify)g_free,
                                              (GDestroyNotify)gtk_tree_row_reference_free );
    ret = vbox;
    return ret;
}



/****
*****
*****  TRACKER
*****
****/

/* if it's been longer than a minute, don't bother showing the seconds */
static void
tr_strltime_rounded( char * buf, time_t t, size_t buflen )
{
    if( t > 60 ) t -= ( t % 60 );
    tr_strltime( buf, t, buflen );
}

static void
buildTrackerSummary( GString * gstr, const char * key, const tr_tracker_stat * st, gboolean showScrape )
{
    char * str;
    char timebuf[256];
    const time_t now = time( NULL );
    const char * err_markup_begin = "<span color=\"red\">";
    const char * err_markup_end = "</span>";
    const char * timeout_markup_begin = "<span color=\"#224466\">";
    const char * timeout_markup_end = "</span>";
    const char * success_markup_begin = "<span color=\"#008B00\">";
    const char * success_markup_end = "</span>";

    /* hostname */
    {
        g_string_append( gstr, st->isBackup ? "<i>" : "<b>" );
        if( key )
            str = g_markup_printf_escaped( "%s - %s", st->host, key );
        else
            str = g_markup_printf_escaped( "%s", st->host );
        g_string_append( gstr, str );
        g_free( str );
        g_string_append( gstr, st->isBackup ? "</i>" : "</b>" );
    }

    if( !st->isBackup )
    {
        if( st->hasAnnounced && st->announceState != TR_TRACKER_INACTIVE )
        {
            g_string_append_c( gstr, '\n' );
            tr_strltime_rounded( timebuf, now - st->lastAnnounceTime, sizeof( timebuf ) );
            if( st->lastAnnounceSucceeded )
                g_string_append_printf( gstr, _( "Got a list of %1$s%2$'d peers%3$s %4$s ago" ),
                                        success_markup_begin, st->lastAnnouncePeerCount, success_markup_end,
                                        timebuf );
            else if( st->lastAnnounceTimedOut )
                g_string_append_printf( gstr, _( "Peer list request %1$stimed out%2$s %3$s ago; will retry" ),
                                        timeout_markup_begin, timeout_markup_end, timebuf );
            else
                g_string_append_printf( gstr, _( "Got an error %1$s\"%2$s\"%3$s %4$s ago" ),
                                        err_markup_begin, st->lastAnnounceResult, err_markup_end, timebuf );
        }

        switch( st->announceState )
        {
            case TR_TRACKER_INACTIVE:
                g_string_append_c( gstr, '\n' );
                g_string_append( gstr, _( "No updates scheduled" ) );
                break;
            case TR_TRACKER_WAITING:
                tr_strltime_rounded( timebuf, st->nextAnnounceTime - now, sizeof( timebuf ) );
                g_string_append_c( gstr, '\n' );
                g_string_append_printf( gstr, _( "Asking for more peers in %s" ), timebuf );
                break;
            case TR_TRACKER_QUEUED:
                g_string_append_c( gstr, '\n' );
                g_string_append( gstr, _( "Queued to ask for more peers" ) );
                break;
            case TR_TRACKER_ACTIVE:
                tr_strltime_rounded( timebuf, now - st->lastAnnounceStartTime, sizeof( timebuf ) );
                g_string_append_c( gstr, '\n' );
                g_string_append_printf( gstr, _( "Asking for more peers now... <small>%s</small>" ), timebuf );
                break;
        }

        if( showScrape )
        {
            if( st->hasScraped ) {
                g_string_append_c( gstr, '\n' );
                tr_strltime_rounded( timebuf, now - st->lastScrapeTime, sizeof( timebuf ) );
                if( st->lastScrapeSucceeded )
                    g_string_append_printf( gstr, _( "Tracker had %s%'d seeders and %'d leechers%s %s ago" ),
                                            success_markup_begin, st->seederCount, st->leecherCount, success_markup_end,
                                            timebuf );
                else
                    g_string_append_printf( gstr, _( "Got a scrape error \"%s%s%s\" %s ago" ), err_markup_begin, st->lastScrapeResult, err_markup_end, timebuf );
            }

            switch( st->scrapeState )
            {
                case TR_TRACKER_INACTIVE:
                    break;
                case TR_TRACKER_WAITING:
                    g_string_append_c( gstr, '\n' );
                    tr_strltime_rounded( timebuf, st->nextScrapeTime - now, sizeof( timebuf ) );
                    g_string_append_printf( gstr, _( "Asking for peer counts in %s" ), timebuf );
                    break;
                case TR_TRACKER_QUEUED:
                    g_string_append_c( gstr, '\n' );
                    g_string_append( gstr, _( "Queued to ask for peer counts" ) );
                    break;
                case TR_TRACKER_ACTIVE:
                    g_string_append_c( gstr, '\n' );
                    tr_strltime_rounded( timebuf, now - st->lastScrapeStartTime, sizeof( timebuf ) );
                    g_string_append_printf( gstr, _( "Asking for peer counts now... <small>%s</small>" ), timebuf );
                    break;
            }
        }
    }
}

enum
{
  TRACKER_COL_TORRENT_ID,
  TRACKER_COL_TEXT,
  TRACKER_COL_IS_BACKUP,
  TRACKER_COL_TRACKER_ID,
  TRACKER_COL_FAVICON,
  TRACKER_COL_WAS_UPDATED,
  TRACKER_COL_KEY,
  TRACKER_N_COLS
};

static gboolean
trackerVisibleFunc( GtkTreeModel * model, GtkTreeIter * iter, gpointer data )
{
    gboolean isBackup;
    struct DetailsImpl * di = data;

    /* show all */
    if( gtk_toggle_button_get_active( GTK_TOGGLE_BUTTON( di->all_check ) ) )
        return TRUE;

     /* don't show the backups... */
     gtk_tree_model_get( model, iter, TRACKER_COL_IS_BACKUP, &isBackup, -1 );
     return !isBackup;
}

static int
tracker_list_get_current_torrent_id( struct DetailsImpl * di )
{
    int torrent_id = -1;

    /* if there's only one torrent in the dialog, always use it */
    if( torrent_id < 0 )
        if( g_slist_length( di->ids ) == 1 )
            torrent_id = GPOINTER_TO_INT( di->ids->data );

    /* otherwise, use the selected tracker's torrent */
    if( torrent_id < 0 ) {
        GtkTreeIter iter;
        GtkTreeModel * model;
        GtkTreeSelection * sel = gtk_tree_view_get_selection( GTK_TREE_VIEW( di->tracker_view ) );
        if( gtk_tree_selection_get_selected( sel, &model, &iter ) )
            gtk_tree_model_get( model, &iter, TRACKER_COL_TORRENT_ID, &torrent_id, -1 );
    }

    return torrent_id;
}

static tr_torrent*
tracker_list_get_current_torrent( struct DetailsImpl * di )
{
    const int torrent_id = tracker_list_get_current_torrent_id( di );
    return gtr_core_find_torrent( di->core, torrent_id );
}

static void
favicon_ready_cb( gpointer pixbuf, gpointer vreference )
{
    GtkTreeIter iter;
    GtkTreeRowReference * reference = vreference;

    if( pixbuf != NULL )
    {
        GtkTreePath * path = gtk_tree_row_reference_get_path( reference );
        GtkTreeModel * model = gtk_tree_row_reference_get_model( reference );

        if( gtk_tree_model_get_iter( model, &iter, path ) )
            gtk_list_store_set( GTK_LIST_STORE( model ), &iter,
                                TRACKER_COL_FAVICON, pixbuf,
                                -1 );

        gtk_tree_path_free( path );

        g_object_unref( pixbuf );
    }

    gtk_tree_row_reference_free( reference );
}

static void
refreshTracker( struct DetailsImpl * di, tr_torrent ** torrents, int n )
{
    int i;
    int * statCount;
    tr_tracker_stat ** stats;
    GtkTreeIter iter;
    GtkTreeModel * model;
    GString * gstr = di->gstr; /* buffer for temporary strings */
    GHashTable * hash = di->tracker_hash;
    GtkListStore * store = di->tracker_store;
    tr_session * session = gtr_core_session( di->core );
    const gboolean showScrape = gtk_toggle_button_get_active( GTK_TOGGLE_BUTTON( di->scrape_check ) );

    /* step 1: get all the trackers */
    statCount = g_new0( int, n );
    stats = g_new0( tr_tracker_stat *, n );
    for( i=0; i<n; ++i )
        stats[i] = tr_torrentTrackers( torrents[i], &statCount[i] );

    /* step 2: mark all the trackers in the list as not-updated */
    model = GTK_TREE_MODEL( store );
    if( gtk_tree_model_iter_nth_child( model, &iter, NULL, 0 ) ) do
        gtk_list_store_set( store, &iter, TRACKER_COL_WAS_UPDATED, FALSE, -1 );
    while( gtk_tree_model_iter_next( model, &iter ) );

    /* step 3: add any new trackers */
    for( i=0; i<n; ++i ) {
        int j;
        const int jn = statCount[i];
        for( j=0; j<jn; ++j ) {
            const tr_torrent * tor = torrents[i];
            const tr_tracker_stat * st = &stats[i][j];
            const int torrent_id = tr_torrentId( tor );

            /* build the key to find the row */
            g_string_truncate( gstr, 0 );
            g_string_append_printf( gstr, "%d\t%d\t%s", torrent_id, st->tier, st->announce );

            if( g_hash_table_lookup( hash, gstr->str ) == NULL ) {
                GtkTreePath * p;
                GtkTreeIter iter;
                GtkTreeRowReference * ref;

                gtk_list_store_insert_with_values( store, &iter, -1,
                    TRACKER_COL_TORRENT_ID, torrent_id,
                    TRACKER_COL_TRACKER_ID, st->id,
                    TRACKER_COL_KEY, gstr->str,
                    -1 );

                p = gtk_tree_model_get_path( model, &iter );
                ref = gtk_tree_row_reference_new( model, p );
                g_hash_table_insert( hash, g_strdup( gstr->str ), ref );
                ref = gtk_tree_row_reference_new( model, p );
                gtr_get_favicon_from_url( session, st->announce, favicon_ready_cb, ref );
                gtk_tree_path_free( p );
            }
        }
    }

    /* step 4: update the peers */
    for( i=0; i<n; ++i )
    {
        int j;
        const tr_torrent * tor = torrents[i];
        const char * summary_name = n>1 ? tr_torrentName( tor ) : NULL;
        for( j=0; j<statCount[i]; ++j )
        {
            GtkTreePath * p;
            GtkTreeRowReference * ref;
            const tr_tracker_stat * st = &stats[i][j];

            /* build the key to find the row */
            g_string_truncate( gstr, 0 );
            g_string_append_printf( gstr, "%d\t%d\t%s", tr_torrentId( tor ), st->tier, st->announce );
            ref = g_hash_table_lookup( hash, gstr->str );
            p = gtk_tree_row_reference_get_path( ref );
            gtk_tree_model_get_iter( model, &iter, p );

            /* update the row */
            g_string_truncate( gstr, 0 );
            buildTrackerSummary( gstr, summary_name, st, showScrape );
            gtk_list_store_set( store, &iter, TRACKER_COL_TEXT, gstr->str,
                                              TRACKER_COL_IS_BACKUP, st->isBackup,
                                              TRACKER_COL_TRACKER_ID, st->id,
                                              TRACKER_COL_WAS_UPDATED, TRUE,
                                              -1 );

            /* cleanup */
            gtk_tree_path_free( p );
        }
    }

    /* step 5: remove trackers that have disappeared */
    if( gtk_tree_model_iter_nth_child( model, &iter, NULL, 0 ) ) {
        gboolean more = TRUE;
        while( more ) {
            gboolean b;
            gtk_tree_model_get( model, &iter, TRACKER_COL_WAS_UPDATED, &b, -1 );
            if( b )
                more = gtk_tree_model_iter_next( model, &iter );
            else {
                char * key;
                gtk_tree_model_get( model, &iter, TRACKER_COL_KEY, &key, -1 );
                g_hash_table_remove( hash, key );
                more = gtk_list_store_remove( store, &iter );
                g_free( key );
            }
        }
    }

    gtk_widget_set_sensitive( di->edit_trackers_button,
                              tracker_list_get_current_torrent_id( di ) >= 0 );

    /* cleanup */
    for( i=0; i<n; ++i )
        tr_torrentTrackersFree( stats[i], statCount[i] );
    g_free( stats );
    g_free( statCount );
}

static void
onScrapeToggled( GtkToggleButton * button, struct DetailsImpl * di )
{
    const char * key = PREF_KEY_SHOW_MORE_TRACKER_INFO;
    const gboolean value = gtk_toggle_button_get_active( button );
    gtr_core_set_pref_bool( di->core, key, value );
    refresh( di );
}

static void
onBackupToggled( GtkToggleButton * button, struct DetailsImpl * di )
{
    const char * key = PREF_KEY_SHOW_BACKUP_TRACKERS;
    const gboolean value = gtk_toggle_button_get_active( button );
    gtr_core_set_pref_bool( di->core, key, value );
    refresh( di );
}

static void
on_edit_trackers_response( GtkDialog * dialog, int response, gpointer data )
{
    gboolean do_destroy = TRUE;
    struct DetailsImpl * di = data;

    if( response == GTK_RESPONSE_ACCEPT )
    {
        int i, n;
        int tier;
        GtkTextIter start, end;
        const int torrent_id = GPOINTER_TO_INT( g_object_get_qdata( G_OBJECT( dialog ), TORRENT_ID_KEY ) );
        GtkTextBuffer * text_buffer = g_object_get_qdata( G_OBJECT( dialog ), TEXT_BUFFER_KEY );
        tr_torrent * tor = gtr_core_find_torrent( di->core, torrent_id );

        if( tor != NULL )
        {
            tr_tracker_info * trackers;
            char ** tracker_strings;
            char * tracker_text;

            /* build the array of trackers */
            gtk_text_buffer_get_bounds( text_buffer, &start, &end );
            tracker_text = gtk_text_buffer_get_text( text_buffer, &start, &end, FALSE );
            tracker_strings = g_strsplit( tracker_text, "\n", 0 );
            for( i=0; tracker_strings[i]; )
                ++i;
            trackers = g_new0( tr_tracker_info, i );
            for( i=n=tier=0; tracker_strings[i]; ++i ) {
                const char * str = tracker_strings[i];
                if( !*str )
                    ++tier;
                else {
                    trackers[n].tier = tier;
                    trackers[n].announce = tracker_strings[i];
                    ++n;
                }
            }

            /* update the torrent */
            if( tr_torrentSetAnnounceList( tor, trackers, n ) )
                refresh( di );
            else {
                GtkWidget * w;
                const char * text = _( "List contains invalid URLs" );
                w = gtk_message_dialog_new( GTK_WINDOW( dialog ),
                                            GTK_DIALOG_MODAL,
                                            GTK_MESSAGE_ERROR,
                                            GTK_BUTTONS_CLOSE, "%s", text );
                gtk_message_dialog_format_secondary_text( GTK_MESSAGE_DIALOG( w ), "%s", _( "Please correct the errors and try again." ) );
                gtk_dialog_run( GTK_DIALOG( w ) );
                gtk_widget_destroy( w );
                do_destroy = FALSE;
            }

            /* cleanup */
            g_free( trackers );
            g_strfreev( tracker_strings );
            g_free( tracker_text );
        }
    }

    if( do_destroy )
        gtk_widget_destroy( GTK_WIDGET( dialog ) );
}

static void
get_editable_tracker_list( GString * gstr, const tr_torrent * tor )
{
    int i;
    int tier = 0;
    const tr_info * inf = tr_torrentInfo( tor );
    for( i=0; i<inf->trackerCount; ++i ) {
        const tr_tracker_info * t = &inf->trackers[i];
        if( tier != t->tier ) {
            tier = t->tier;
            g_string_append_c( gstr, '\n' );
        }
        g_string_append_printf( gstr, "%s\n", t->announce );
    }
    if( gstr->len > 0 )
        g_string_truncate( gstr, gstr->len-1 );
}

static void
on_edit_trackers( GtkButton * button, gpointer data )
{
    struct DetailsImpl * di = data;
    tr_torrent * tor = tracker_list_get_current_torrent( di );

    if( tor != NULL )
    {
        guint row;
        GtkWidget *w, *d, *fr, *t, *l, *sw;
        GtkWindow * win = GTK_WINDOW( gtk_widget_get_toplevel( GTK_WIDGET( button ) ) );
        GString * gstr = di->gstr; /* buffer for temporary strings */
        const int torrent_id = tr_torrentId( tor );

        g_string_truncate( gstr, 0 );
        g_string_append_printf( gstr, _( "%s - Edit Trackers" ), tr_torrentName( tor ) );
        d = gtk_dialog_new_with_buttons( gstr->str, win,
                GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
                GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
                GTK_STOCK_SAVE, GTK_RESPONSE_ACCEPT,
                NULL );
        g_signal_connect( d, "response", G_CALLBACK( on_edit_trackers_response ), data );

        row = 0;
        t = hig_workarea_create( );
        hig_workarea_add_section_title( t, &row, _( "Tracker Announce URLs" ) );

        l = gtk_label_new( NULL );
        gtk_label_set_markup( GTK_LABEL( l ), _( "To add a backup URL, add it on the line after the primary URL.\n"
                                                 "To add another primary URL, add it after a blank line." ) );
        gtk_label_set_justify( GTK_LABEL( l ), GTK_JUSTIFY_LEFT );
        gtk_misc_set_alignment( GTK_MISC( l ), 0.0, 0.5 );
        hig_workarea_add_wide_control( t, &row, l );

        w = gtk_text_view_new( );
        gtk_widget_set_size_request( w, 500u, 166u );
        g_string_truncate( gstr, 0 );
        get_editable_tracker_list( gstr, tor );
        gtk_text_buffer_set_text( gtk_text_view_get_buffer( GTK_TEXT_VIEW( w ) ), gstr->str, -1 );
        fr = gtk_frame_new( NULL );
        gtk_frame_set_shadow_type( GTK_FRAME( fr ), GTK_SHADOW_IN );
        sw = gtk_scrolled_window_new( NULL, NULL );
        gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( sw ),
                                        GTK_POLICY_AUTOMATIC,
                                        GTK_POLICY_AUTOMATIC );
        gtk_container_add( GTK_CONTAINER( sw ), w );
        gtk_container_add( GTK_CONTAINER( fr ), sw );
        hig_workarea_add_wide_tall_control( t, &row, fr );

        hig_workarea_finish( t, &row );
        gtr_dialog_set_content( GTK_DIALOG( d ), t );

        g_object_set_qdata( G_OBJECT( d ), TORRENT_ID_KEY, GINT_TO_POINTER( torrent_id ) );
        g_object_set_qdata( G_OBJECT( d ), TEXT_BUFFER_KEY, gtk_text_view_get_buffer( GTK_TEXT_VIEW( w ) ) );
        gtk_widget_show( d );
    }
}

static void
on_tracker_list_selection_changed( GtkTreeSelection * sel, gpointer gdi )
{
    struct DetailsImpl * di = gdi;
    const int n = gtk_tree_selection_count_selected_rows( sel );
    tr_torrent * tor = tracker_list_get_current_torrent( di );

    gtk_widget_set_sensitive( di->remove_tracker_button, n>0 );
    gtk_widget_set_sensitive( di->add_tracker_button, tor!=NULL );
    gtk_widget_set_sensitive( di->edit_trackers_button, tor!=NULL );
}

static void
on_add_tracker_response( GtkDialog * dialog, int response, gpointer gdi )
{
    gboolean destroy = TRUE;

    if( response == GTK_RESPONSE_ACCEPT )
    {
        struct DetailsImpl * di = gdi;
        GtkWidget * e = GTK_WIDGET( g_object_get_qdata( G_OBJECT( dialog ), URL_ENTRY_KEY ) );
        const int torrent_id = GPOINTER_TO_INT( g_object_get_qdata( G_OBJECT( dialog ), TORRENT_ID_KEY ) );
        char * url = g_strdup( gtk_entry_get_text( GTK_ENTRY( e ) ) );
        g_strstrip( url );

        if( url && *url )
        {
            if( tr_urlIsValidTracker( url ) )
            {
                char * json = g_strdup_printf(
                    "{\n"
                    "  \"method\": \"torrent-set\",\n"
                    "  \"arguments\": { \"id\": %d, \"trackerAdd\": [ \"%s\" ] }\n"
                    "}\n",
                    torrent_id, url );
                gtr_core_exec_json( di->core, json );
                refresh( di );
                g_free( json );
            }
            else
            {
                gtr_unrecognized_url_dialog( GTK_WIDGET( dialog ), url );
                destroy = FALSE;
            }
        }

        g_free( url );
    }

    if( destroy )
        gtk_widget_destroy( GTK_WIDGET( dialog ) );
}

static void
on_tracker_list_add_button_clicked( GtkButton * button UNUSED, gpointer gdi )
{
    struct DetailsImpl * di = gdi;
    tr_torrent * tor = tracker_list_get_current_torrent( di );

    if( tor != NULL )
    {
        guint row;
        GtkWidget * e;
        GtkWidget * t;
        GtkWidget * w;
        GString * gstr = di->gstr; /* buffer for temporary strings */

        g_string_truncate( gstr, 0 );
        g_string_append_printf( gstr, _( "%s - Add Tracker" ), tr_torrentName( tor ) );
        w = gtk_dialog_new_with_buttons( gstr->str, GTK_WINDOW( di->dialog ),
                                         GTK_DIALOG_DESTROY_WITH_PARENT,
                                         GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
                                         GTK_STOCK_ADD, GTK_RESPONSE_ACCEPT,
                                         NULL );
        gtk_dialog_set_alternative_button_order( GTK_DIALOG( w ),
                                                 GTK_RESPONSE_ACCEPT,
                                                 GTK_RESPONSE_CANCEL,
                                                 -1 );
        g_signal_connect( w, "response", G_CALLBACK( on_add_tracker_response ), gdi );

        row = 0;
        t = hig_workarea_create( );
        hig_workarea_add_section_title( t, &row, _( "Tracker" ) );
        e = gtk_entry_new( );
        gtk_widget_set_size_request( e, 400, -1 );
        gtr_paste_clipboard_url_into_entry( e );
        g_object_set_qdata( G_OBJECT( w ), URL_ENTRY_KEY, e );
        g_object_set_qdata( G_OBJECT( w ), TORRENT_ID_KEY, GINT_TO_POINTER( tr_torrentId( tor ) ) );
        hig_workarea_add_row( t, &row, _( "_Announce URL:" ), e, NULL );
        gtr_dialog_set_content( GTK_DIALOG( w ), t );
        gtk_widget_show_all( w );
    }
}

static void
on_tracker_list_remove_button_clicked( GtkButton * button UNUSED, gpointer gdi )
{
    GtkTreeIter iter;
    GtkTreeModel * model;
    struct DetailsImpl * di = gdi;
    GtkTreeView * v = GTK_TREE_VIEW( di->tracker_view );
    GtkTreeSelection * sel = gtk_tree_view_get_selection( v );

    if( gtk_tree_selection_get_selected( sel, &model, &iter ) )
    {
        char * json;
        int torrent_id;
        int tracker_id;
        gtk_tree_model_get( model, &iter, TRACKER_COL_TRACKER_ID, &tracker_id,
                                          TRACKER_COL_TORRENT_ID, &torrent_id,
                                          -1 );
        json = g_strdup_printf( "{\n"
                                "  \"method\": \"torrent-set\",\n"
                                "  \"arguments\": { \"id\": %d, \"trackerRemove\": [ %d ] }\n"
                                "}\n",
                                torrent_id, tracker_id );
        gtr_core_exec_json( di->core, json );
        refresh( di );
        g_free( json );
    }
}

static GtkWidget*
tracker_page_new( struct DetailsImpl * di )
{
    gboolean b;
    GtkCellRenderer * r;
    GtkTreeViewColumn * c;
    GtkTreeSelection * sel;
    GtkWidget *vbox, *sw, *w, *v, *hbox;
    const int pad = ( GUI_PAD + GUI_PAD_BIG ) / 2;

    vbox = gtr_vbox_new( FALSE, GUI_PAD );
    gtk_container_set_border_width( GTK_CONTAINER( vbox ), GUI_PAD_BIG );

    di->tracker_store = gtk_list_store_new( TRACKER_N_COLS, G_TYPE_INT,
                                                            G_TYPE_STRING,
                                                            G_TYPE_BOOLEAN,
                                                            G_TYPE_INT,
                                                            GDK_TYPE_PIXBUF,
                                                            G_TYPE_BOOLEAN,
                                                            G_TYPE_STRING );
    di->tracker_hash = g_hash_table_new_full( g_str_hash,
                                              g_str_equal,
                                              (GDestroyNotify)g_free,
                                              (GDestroyNotify)gtk_tree_row_reference_free );
    di->trackers_filtered = gtk_tree_model_filter_new( GTK_TREE_MODEL( di->tracker_store ), NULL );
    gtk_tree_model_filter_set_visible_func( GTK_TREE_MODEL_FILTER( di->trackers_filtered ),
                                            trackerVisibleFunc, di, NULL );

    hbox = gtr_hbox_new( FALSE, GUI_PAD_BIG );

        v = di->tracker_view = gtk_tree_view_new_with_model( GTK_TREE_MODEL( di->trackers_filtered ) );
        g_object_unref( di->trackers_filtered );
        gtk_tree_view_set_headers_visible( GTK_TREE_VIEW( v ), FALSE );
        g_signal_connect( v, "button-press-event", G_CALLBACK( on_tree_view_button_pressed ), NULL );
        g_signal_connect( v, "button-release-event", G_CALLBACK( on_tree_view_button_released ), NULL );
        gtk_tree_view_set_rules_hint( GTK_TREE_VIEW( v ), TRUE );

        sel = gtk_tree_view_get_selection( GTK_TREE_VIEW( v ) );
        g_signal_connect( sel, "changed", G_CALLBACK( on_tracker_list_selection_changed ), di );

        c = gtk_tree_view_column_new( );
        gtk_tree_view_column_set_title( c, _( "Trackers" ) );
        gtk_tree_view_append_column( GTK_TREE_VIEW( v ), c );

        r = gtk_cell_renderer_pixbuf_new( );
        g_object_set( r, "width", 20 + (GUI_PAD_SMALL*2), "xpad", GUI_PAD_SMALL, "ypad", pad, "yalign", 0.0f, NULL );
        gtk_tree_view_column_pack_start( c, r, FALSE );
        gtk_tree_view_column_add_attribute( c, r, "pixbuf", TRACKER_COL_FAVICON );

        r = gtk_cell_renderer_text_new( );
        g_object_set( G_OBJECT( r ), "ellipsize", PANGO_ELLIPSIZE_END, "xpad", GUI_PAD_SMALL, "ypad", pad, NULL );
        gtk_tree_view_column_pack_start( c, r, TRUE );
        gtk_tree_view_column_add_attribute( c, r, "markup", TRACKER_COL_TEXT );

        sw = gtk_scrolled_window_new( NULL, NULL );
        gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( sw ), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
        gtk_container_add( GTK_CONTAINER( sw ), v );
        w = gtk_frame_new( NULL );
        gtk_frame_set_shadow_type( GTK_FRAME( w ), GTK_SHADOW_IN );
        gtk_container_add( GTK_CONTAINER( w ), sw );

    gtk_box_pack_start( GTK_BOX( hbox ), w, TRUE, TRUE, 0 );

        v = gtr_vbox_new( FALSE, GUI_PAD );

        w = gtk_button_new_with_mnemonic( _( "_Add" ) );
        di->add_tracker_button = w;
        g_signal_connect( w, "clicked", G_CALLBACK( on_tracker_list_add_button_clicked ), di );
        gtk_box_pack_start( GTK_BOX( v ), w, FALSE, FALSE, 0 );

        w = gtk_button_new_with_mnemonic( _( "_Edit" ) );
        gtk_button_set_image( GTK_BUTTON( w ), gtk_image_new_from_stock( GTK_STOCK_EDIT, GTK_ICON_SIZE_BUTTON ) );
        g_signal_connect( w, "clicked", G_CALLBACK( on_edit_trackers ), di );
        di->edit_trackers_button = w;
        gtk_box_pack_start( GTK_BOX( v ), w, FALSE, FALSE, 0 );

        w = gtk_button_new_with_mnemonic( _( "_Remove" ) );
        di->remove_tracker_button = w;
        g_signal_connect( w, "clicked", G_CALLBACK( on_tracker_list_remove_button_clicked ), di );
        gtk_box_pack_start( GTK_BOX( v ), w, FALSE, FALSE, 0 );

        gtk_box_pack_start( GTK_BOX( hbox ), v, FALSE, FALSE, 0 );

    gtk_box_pack_start( GTK_BOX( vbox ), hbox, TRUE, TRUE, 0 );

    w = gtk_check_button_new_with_mnemonic( _( "Show _more details" ) );
    di->scrape_check = w;
    b = gtr_pref_flag_get( PREF_KEY_SHOW_MORE_TRACKER_INFO );
    gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON( w ), b );
    g_signal_connect( w, "toggled", G_CALLBACK( onScrapeToggled ), di );
    gtk_box_pack_start( GTK_BOX( vbox ), w, FALSE, FALSE, 0 );

    w = gtk_check_button_new_with_mnemonic( _( "Show _backup trackers" ) );
    di->all_check = w;
    b = gtr_pref_flag_get( PREF_KEY_SHOW_BACKUP_TRACKERS );
    gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON( w ), b );
    g_signal_connect( w, "toggled", G_CALLBACK( onBackupToggled ), di );
    gtk_box_pack_start( GTK_BOX( vbox ), w, FALSE, FALSE, 0 );

    return vbox;
}


/****
*****  DIALOG
****/

static void
refresh( struct DetailsImpl * di )
{
    int n;
    tr_torrent ** torrents = getTorrents( di, &n );

    refreshInfo( di, torrents, n );
    refreshPeers( di, torrents, n );
    refreshTracker( di, torrents, n );
    refreshOptions( di, torrents, n );

    if( n == 0 )
        gtk_dialog_response( GTK_DIALOG( di->dialog ), GTK_RESPONSE_CLOSE );

    g_free( torrents );
}

static gboolean
periodic_refresh( gpointer data )
{
    refresh( data );
    return TRUE;
}

static void
details_free( gpointer gdata )
{
    struct DetailsImpl * data = gdata;
    g_source_remove( data->periodic_refresh_tag );
    g_hash_table_destroy( data->tracker_hash );
    g_hash_table_destroy( data->webseed_hash );
    g_hash_table_destroy( data->peer_hash );
    g_string_free( data->gstr, TRUE );
    g_slist_free( data->ids );
    g_free( data );
}

GtkWidget*
gtr_torrent_details_dialog_new( GtkWindow * parent, TrCore * core )
{
    GtkWidget *d, *n, *v, *w, *l;
    struct DetailsImpl * di = g_new0( struct DetailsImpl, 1 );

    /* one-time setup */
    if( ARG_KEY == 0 )
    {
        ARG_KEY          = g_quark_from_static_string( "tr-arg-key" );
        DETAILS_KEY      = g_quark_from_static_string( "tr-details-data-key" );
        TORRENT_ID_KEY   = g_quark_from_static_string( "tr-torrent-id-key" );
        TEXT_BUFFER_KEY  = g_quark_from_static_string( "tr-text-buffer-key" );
        URL_ENTRY_KEY    = g_quark_from_static_string( "tr-url-entry-key" );
    }

    /* create the dialog */
    di->core = core;
    di->gstr = g_string_new( NULL );
    d = gtk_dialog_new_with_buttons( NULL, parent, 0,
                                     GTK_STOCK_CLOSE, GTK_RESPONSE_CLOSE,
                                     NULL );
    di->dialog = d;
    gtk_window_set_role( GTK_WINDOW( d ), "tr-info" );
    g_signal_connect_swapped( d, "response",
                              G_CALLBACK( gtk_widget_destroy ), d );
    gtk_container_set_border_width( GTK_CONTAINER( d ), GUI_PAD );
    g_object_set_qdata_full( G_OBJECT( d ), DETAILS_KEY, di, details_free );

    n = gtk_notebook_new( );
    gtk_container_set_border_width( GTK_CONTAINER( n ), GUI_PAD );

    w = info_page_new( di );
    l = gtk_label_new( _( "Information" ) );
    gtk_notebook_append_page( GTK_NOTEBOOK( n ), w, l );

    w = peer_page_new( di );
    l = gtk_label_new( _( "Peers" ) );
    gtk_notebook_append_page( GTK_NOTEBOOK( n ),  w, l );

    w = tracker_page_new( di );
    l = gtk_label_new( _( "Trackers" ) );
    gtk_notebook_append_page( GTK_NOTEBOOK( n ), w, l );

    v = gtr_vbox_new( FALSE, 0 );
    di->file_list = gtr_file_list_new( core, 0 );
    di->file_label = gtk_label_new( _( "File listing not available for combined torrent properties" ) );
    gtk_box_pack_start( GTK_BOX( v ), di->file_list, TRUE, TRUE, 0 );
    gtk_box_pack_start( GTK_BOX( v ), di->file_label, TRUE, TRUE, 0 );
    gtk_container_set_border_width( GTK_CONTAINER( v ), GUI_PAD_BIG );
    l = gtk_label_new( _( "Files" ) );
    gtk_notebook_append_page( GTK_NOTEBOOK( n ), v, l );

    w = options_page_new( di );
    l = gtk_label_new( _( "Options" ) );
    gtk_notebook_append_page( GTK_NOTEBOOK( n ), w, l );

    gtr_dialog_set_content( GTK_DIALOG( d ), n );
    di->periodic_refresh_tag = gdk_threads_add_timeout_seconds( SECONDARY_WINDOW_REFRESH_INTERVAL_SECONDS,
                                                                periodic_refresh, di );
    return d;
}

void
gtr_torrent_details_dialog_set_torrents( GtkWidget * w, GSList * ids )
{
    char title[256];
    const int len = g_slist_length( ids );
    struct DetailsImpl * di = g_object_get_qdata( G_OBJECT( w ), DETAILS_KEY );

    g_slist_free( di->ids );
    di->ids = g_slist_copy( ids );

    if( len == 1 )
    {
        const int id = GPOINTER_TO_INT( ids->data );
        tr_torrent * tor = gtr_core_find_torrent( di->core, id );
        const tr_info * inf = tr_torrentInfo( tor );
        g_snprintf( title, sizeof( title ), _( "%s Properties" ), inf->name );

        gtr_file_list_set_torrent( di->file_list, id );
        gtk_widget_show( di->file_list );
        gtk_widget_hide( di->file_label );
    }
   else
   {
        gtr_file_list_clear( di->file_list );
        gtk_widget_hide( di->file_list );
        gtk_widget_show( di->file_label );
        g_snprintf( title, sizeof( title ), _( "%'d Torrent Properties" ), len );
    }

    gtk_window_set_title( GTK_WINDOW( w ), title );

    refresh( di );
}
