path: root/embed/downloader-view.c

/*
 *  Copyright (C) 2000-2004 Marco Pesenti Gritti
 *  Copyright (C) 2003, 2004 Xan Lopez
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 *  $Id$
 */

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

#include "downloader-view.h"
#include "ephy-gui.h"
#include "ephy-ellipsizing-label.h"
#include "ephy-file-helpers.h"
#include "ephy-embed-shell.h"
#include "ephy-cell-renderer-progress.h"
#include "ephy-stock-icons.h"

#include <libgnomevfs/gnome-vfs-utils.h>
#include <eggstatusicon.h>
#include <eggtraymanager.h>
#include <gtk/gtktreeview.h>
#include <gtk/gtkliststore.h>
#include <gtk/gtktreeviewcolumn.h>
#include <glib/gi18n.h>

#define CONF_DOWNLOADING_SHOW_DETAILS "/apps/epiphany/dialogs/downloader_show_details"
#define DIALOG_MINIMUM_DISPLAY_TIMEOUT 5000

enum
{
    COL_PERCENT,
    COL_FILE,
    COL_REMAINING,
    COL_DOWNLOAD_OBJECT
};

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

struct DownloaderViewPrivate
{
    GtkTreeModel *model;
    GHashTable *downloads_hash;

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

    EggStatusIcon *status_icon;

    long remaining_secs;
};

typedef struct
{
    gboolean is_paused;
    gboolean can_abort;
    DownloaderViewPrivate *priv;
} ControlsInfo;

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

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

        { NULL }
};

static void
downloader_view_build_ui (DownloaderView *dv);
static void
downloader_view_class_init (DownloaderViewClass *klass);
static void
downloader_view_finalize (GObject *object);
static void
downloader_view_init (DownloaderView *dv);

/* Callbacks */
void
download_dialog_pause_cb (GtkButton *button, DownloaderView *dv);
void
download_dialog_abort_cb (GtkButton *button, DownloaderView *dv);
gboolean
download_dialog_delete_cb (GtkWidget *window, GdkEventAny *event,
               DownloaderView *dv);

static GObjectClass *parent_class = NULL;

GType
downloader_view_get_type (void)
{
       static GType downloader_view_type = 0;

        if (downloader_view_type == 0)
        {
                static const GTypeInfo our_info =
                {
                        sizeof (DownloaderViewClass),
                        NULL, /* base_init */
                        NULL, /* base_finalize */
                        (GClassInitFunc) downloader_view_class_init,
                        NULL, /* class_finalize */
                        NULL, /* class_data */
                        sizeof (DownloaderView),
                        0,    /* n_preallocs */
                        (GInstanceInitFunc) downloader_view_init
                };

                downloader_view_type = g_type_register_static (EPHY_TYPE_DIALOG,
                                                               "DownloaderView",
                                                               &our_info, 0);
        }

        return downloader_view_type;
}

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

        parent_class = g_type_class_peek_parent (klass);

        object_class->finalize = downloader_view_finalize;

    g_type_class_add_private (object_class, sizeof(DownloaderViewPrivate));
}

static void
status_icon_activated (EggStatusIcon *icon, DownloaderView *dv)
{
    gtk_window_present (GTK_WINDOW (dv->priv->window));
}

static void
show_status_icon (DownloaderView *dv)
{
    GdkPixbuf *pixbuf;

    pixbuf = gdk_pixbuf_new_from_file (ephy_file ("epiphany-download.png"), NULL);
    dv->priv->status_icon = egg_status_icon_new_from_pixbuf (pixbuf);
    g_object_unref (pixbuf);

    g_signal_connect (dv->priv->status_icon, "activate",
              G_CALLBACK (status_icon_activated), dv);
}

static void
downloader_view_init (DownloaderView *dv)
{
        dv->priv = EPHY_DOWNLOADER_VIEW_GET_PRIVATE (dv);

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

    downloader_view_build_ui (dv);

    show_status_icon (dv);

    g_object_ref (embed_shell);
}

static void
downloader_view_finalize (GObject *object)
{
    DownloaderView *dv = EPHY_DOWNLOADER_VIEW (object);

    g_object_unref (dv->priv->status_icon);
    g_hash_table_destroy (dv->priv->downloads_hash);
    g_object_unref (embed_shell);

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

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

static char *
format_interval (long interval)
{
    int secs, hours, mins;                                                                                                                     
    secs = (int)(interval + .5);
    hours = secs / 3600;
    secs -= hours * 3600;
    mins = secs / 60;
    secs -= mins * 60;

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

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

static void
update_buttons (DownloaderView *dv)
{
    GtkTreeSelection *selection;
    GtkTreeModel *model;
    GtkTreeIter iter;
    GValue val = {0, };
    EphyDownload *download;
    EphyDownloadState state;
    gboolean pause_enabled = FALSE;
    gboolean abort_enabled = FALSE;
    gboolean label_pause = TRUE;

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

    if (gtk_tree_selection_get_selected (selection, &model, &iter))
    {
        gtk_tree_model_get_value (model, &iter, COL_DOWNLOAD_OBJECT, &val);
        download = g_value_get_object (&val);
        g_value_unset (&val);

        state = ephy_download_get_state (download);

        switch (state)
        {
        case EPHY_DOWNLOAD_DOWNLOADING:
            pause_enabled = TRUE;
            abort_enabled = TRUE;
            break;
        case EPHY_DOWNLOAD_PAUSED:
            pause_enabled = TRUE;
            abort_enabled = TRUE;
            label_pause = FALSE;
            break;
        default:
            abort_enabled = TRUE;
            break;
        }
    }
    gtk_widget_set_sensitive (dv->priv->pause_button, pause_enabled);
    gtk_widget_set_sensitive (dv->priv->abort_button, abort_enabled);
    gtk_button_set_label (GTK_BUTTON (dv->priv->pause_button), label_pause ? _("_Pause") : _("_Resume"));
}

static void
update_download_row (DownloaderView *dv, EphyDownload *download)
{
    GtkTreeRowReference *row_ref;
    GtkTreePath *path;
    GtkTreeIter iter;
    EphyDownloadState state;
    long total, current, remaining_secs;
    char *remaining, *file, *cur_progress, *name;
    struct tm;
    int percent;

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

    /* State special casing */
    state = ephy_download_get_state (download);
    switch (state)
    {
    case EPHY_DOWNLOAD_FAILED:
        percent = -2;
        remaining_secs = 0; 
        break;
    case EPHY_DOWNLOAD_COMPLETED:
        downloader_view_remove_download (dv, download);
        return;
    case EPHY_DOWNLOAD_DOWNLOADING:
    case EPHY_DOWNLOAD_PAUSED:  
        percent = ephy_download_get_percent (download);
        remaining_secs = ephy_download_get_remaining_time (download);
        break;
    default:
        percent = 0;
        remaining_secs = 0;
        break;
    }

    total = ephy_download_get_total_progress (download);
    current = ephy_download_get_current_progress (download);

    cur_progress = gnome_vfs_format_file_size_for_display (current);

    name = ephy_download_get_name (download);

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

        total_progress = gnome_vfs_format_file_size_for_display (total);
        file = g_strdup_printf ("%s\n%s of %s", name,
                    cur_progress, total_progress);
        g_free (total_progress);
    }
    else
    {
        file = g_strdup_printf ("%s\n%s", name, cur_progress);
    }

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

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

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

    update_buttons (dv);
}

static void
seconds_remaining_total (EphyDownload *download, gpointer data, DownloaderView *dv)
{
    long secs;

    secs = ephy_download_get_remaining_time (download);
    if (secs > 0)
    {
        dv->priv->remaining_secs += secs;
    }
}

static void
update_status_icon (DownloaderView *dv)
{
    char *tooltip, *downloadstring, *remainingstring;
    int downloads, remaining;

    dv->priv->remaining_secs = 0;
    g_hash_table_foreach (dv->priv->downloads_hash,
                  (GHFunc) seconds_remaining_total, dv);
    
    remaining = (dv->priv->remaining_secs);

    if (remaining < 60)
    {
        remainingstring = g_strdup_printf (ngettext ("About %d second left",
                    "About %d seconds left", remaining),
                    remaining);
    }
    else
    {
        remaining /= 60;
        
        remainingstring = g_strdup_printf (ngettext ("About %d minute left",
                    "About %d minutes left", remaining),
                    remaining);
    }

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

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

    tooltip = g_strdup_printf ("%s\n%s",
                    downloadstring, remainingstring);

    egg_status_icon_set_tooltip (dv->priv->status_icon,
                     tooltip, NULL);

    g_free (tooltip);
    g_free (downloadstring);
    g_free (remainingstring);
}

static void
download_changed_cb (EphyDownload *download, DownloaderView *dv)
{
    update_download_row (dv, download);
    update_status_icon (dv);
}

void
downloader_view_add_download (DownloaderView *dv,
                  EphyDownload *download)
{
    GtkTreeRowReference *row_ref;
    GtkTreeIter iter;
    GtkTreeSelection *selection;
    GtkTreePath *path;

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

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

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

    update_download_row (dv, download);
    update_status_icon (dv);

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

    g_signal_connect_object (download, "changed",
                 G_CALLBACK (download_changed_cb), dv, 0);

    ephy_dialog_show (EPHY_DIALOG (dv));
}

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

static gboolean unref_return_false (void *data)
{
    g_object_unref (data);
    return FALSE;
}

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

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

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

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

    liststore = gtk_list_store_new (4,
                    G_TYPE_INT,
                    G_TYPE_STRING,
                    G_TYPE_STRING,
                    G_TYPE_OBJECT);

    gtk_tree_view_set_model (GTK_TREE_VIEW(priv->treeview),
                 GTK_TREE_MODEL (liststore));
    g_object_unref (liststore);
    gtk_tree_view_set_headers_visible (GTK_TREE_VIEW(priv->treeview),
                       TRUE);

    renderer = ephy_cell_renderer_progress_new ();
    gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW(priv->treeview),
                             0, _("%"),
                             renderer,
                             "value", 0,
                             NULL);
    column = gtk_tree_view_get_column (GTK_TREE_VIEW(priv->treeview), 0);
        gtk_tree_view_column_set_reorderable (column, TRUE);
    gtk_tree_view_column_set_resizable (column, TRUE);
        gtk_tree_view_column_set_sort_column_id (column, COL_PERCENT);

    renderer = gtk_cell_renderer_text_new ();
    gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW(priv->treeview),
                             COL_FILE, _("File"),
                             renderer,
                             "text", COL_FILE,
                             NULL);
    column = gtk_tree_view_get_column (GTK_TREE_VIEW(priv->treeview),
                       COL_FILE);
        gtk_tree_view_column_set_expand (column, TRUE);
        gtk_tree_view_column_set_reorderable (column, TRUE);
    gtk_tree_view_column_set_resizable (column, TRUE);
        gtk_tree_view_column_set_sort_column_id (column, COL_FILE);

    renderer = gtk_cell_renderer_text_new ();
    g_object_set (renderer, "xalign", 0.5, NULL);
    gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW(priv->treeview),
                             COL_REMAINING, _("Remaining"),
                             renderer,
                             "text", COL_REMAINING,
                             NULL);
    column = gtk_tree_view_get_column (GTK_TREE_VIEW(priv->treeview),
                       COL_REMAINING);
        gtk_tree_view_column_set_reorderable (column, TRUE);
    gtk_tree_view_column_set_resizable (column, TRUE);
        gtk_tree_view_column_set_sort_column_id (column, COL_REMAINING);

    priv->model = GTK_TREE_MODEL (liststore);

    icon = gtk_widget_render_icon (GTK_WIDGET (priv->window),
                       EPHY_STOCK_DOWNLOAD,
                       GTK_ICON_SIZE_MENU,
                       NULL);
    gtk_window_set_icon (GTK_WINDOW(priv->window), icon);

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

    g_object_ref (dv);
    g_timeout_add (DIALOG_MINIMUM_DISPLAY_TIMEOUT, unref_return_false, dv);
}

void
download_dialog_pause_cb (GtkButton *button, DownloaderView *dv)
{
    GtkTreeSelection *selection;
    GtkTreeModel *model;
    GtkTreeIter iter;
    GValue val = {0, };
    EphyDownload *download;
    EphyDownloadState state;

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

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

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

    state = ephy_download_get_state (download);

    if (state == EPHY_DOWNLOAD_DOWNLOADING)
    {
        ephy_download_pause (download);
    }
    else if (state == EPHY_DOWNLOAD_PAUSED)
    {
        ephy_download_resume (download);
    }
    update_buttons (dv);
}

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

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

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

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

    /* Removal */
    
    gtk_list_store_remove (GTK_LIST_STORE (dv->priv->model), &iter2);
    g_hash_table_remove (dv->priv->downloads_hash,
                 download);

    /* Actual selection */

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

    update_status_icon (dv);

    /* Close the dialog if there are no more downloads */

    if (!g_hash_table_size (dv->priv->downloads_hash))
        g_object_unref (G_OBJECT (dv));
}

void
download_dialog_abort_cb (GtkButton *button, DownloaderView *dv)
{
    GValue val = {0, };
    GtkTreeSelection *selection;
    GtkTreeIter iter;
    GtkTreeModel *model;
    gpointer download;

    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW(dv->priv->treeview));
    
    if (!gtk_tree_selection_get_selected (selection, &model, &iter)) return;

    gtk_tree_model_get_value (model, &iter, COL_DOWNLOAD_OBJECT, &val);
    
    download = g_value_get_object (&val);
    g_value_unset (&val);
    g_return_if_fail (download != NULL);
    
    ephy_download_cancel ((EphyDownload*)download);
    downloader_view_remove_download (dv, download);
}

gboolean
download_dialog_delete_cb (GtkWidget *window, GdkEventAny *event,
               DownloaderView *dv)
{
    if (egg_tray_manager_check_running (gdk_screen_get_default ()))
    {
        gtk_widget_hide (dv->priv->window);
    }

    return TRUE;
}