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.
 *
 *  $Id$
 */

#include "config.h" 

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

#include <libgnomevfs/gnome-vfs-utils.h>
#include <eggstatusicon.h>
#include <eggtraymanager.h>
#include <gtk/gtktreeview.h>
#include <gtk/gtkliststore.h>
#include <gtk/gtkbutton.h>
#include <gtk/gtkcellrenderertext.h>
#include <gtk/gtkcellrendererpixbuf.h>
#include <gtk/gtkcellrendererprogress.h>
#include <gtk/gtktreeselection.h>
#include <gtk/gtktreeviewcolumn.h>
#include <gtk/gtkicontheme.h>
#include <gtk/gtkiconfactory.h>
#include <gtk/gtkmenuitem.h>
#include <gtk/gtkmenushell.h>
#include <gtk/gtkmenu.h>
#include <gtk/gtkmain.h>
#include <libgnomeui/gnome-icon-lookup.h>
#include <glib/gi18n.h>

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

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

enum
{
    PROGRESS_COL_POS,
    FILE_COL_POS,
    REMAINING_COL_POS
};

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

struct DownloaderViewPrivate
{
    GtkTreeModel *model;
    GHashTable *downloads_hash;

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

    EggStatusIcon *status_icon;
};

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 type = 0;

    if (G_UNLIKELY (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
        };

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

    return 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
show_downloader_cb (DownloaderView *dv)
{
    gtk_window_present (GTK_WINDOW (dv->priv->window));
}

static gboolean
status_icon_popup_menu_cb (EggStatusIcon *icon,
                           DownloaderView *dv)
{
        GtkWidget *menu, *item;
    guint button = 0;

    menu = gtk_menu_new ();

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

    gtk_menu_popup (GTK_MENU (menu), NULL, NULL,
            ephy_gui_menu_position_on_panel, icon->tray_icon,
            button, gtk_get_current_event_time ());

    return TRUE;
}

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_swapped (dv->priv->status_icon, "activate",
                  G_CALLBACK (show_downloader_cb), dv);
    g_signal_connect (dv->priv->status_icon, "popup-menu",
              G_CALLBACK(status_icon_popup_menu_cb), 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_CLASS (parent_class)->finalize (object);

    ephy_object_idle_unref (embed_shell);
}

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 (gint64 interval)
{
    int hours, mins, secs;

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

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

static GtkTreeRowReference *
get_row_from_download (DownloaderView *dv, 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;
    gint64 remaining_secs = 0, total, current;
    char *remaining, *file, *cur_progress, *name;
    struct tm;
    int percent = 0;

    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_COMPLETED:
        downloader_view_remove_download (dv, download);
        return;
    case EPHY_DOWNLOAD_PAUSED:
    case EPHY_DOWNLOAD_DOWNLOADING:
        percent = ephy_download_get_percent (download);
        remaining_secs = ephy_download_get_remaining_time (download);
        break;
    default:
        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);
        /* translators: first %s is filename, "%s of %s" is current/total file size */
        file = g_strdup_printf (_("%s\n%s of %s"), name,
                    cur_progress, total_progress);
        g_free (total_progress);
    }
    else
    {
        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_STATE, state,
                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
update_status_icon (DownloaderView *dv)
{
    char *downloadstring;
    int downloads;

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

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

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

    g_free (downloadstring);
}

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;
    GtkIconTheme *theme;
    GtkIconInfo *icon_info;
    GdkPixbuf *pixbuf;
    char *mime, *icon_name;
    int width = 16, height = 16;

    g_object_ref (download);

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

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

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

    update_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);

    /* Show it already */
    ephy_dialog_show (EPHY_DIALOG (dv));
    
    mime =  ephy_download_get_mime (download);

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

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

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

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

}

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

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

    gtk_tree_model_get (model, iter,
                COL_STATE, &state,
                COL_PERCENT, &percent,
                -1);

    switch (state)
    {
        case EPHY_DOWNLOAD_INITIALISING:
            /* Translators: The text before the "|" is context to help you decide on
             * the correct translation. You MUST OMIT it in the translated string. */
            text = Q_("download status|Unknown");
            break;
        case EPHY_DOWNLOAD_FAILED:
            /* Translators: The text before the "|" is context to help you decide on
             * the correct translation. You MUST OMIT it in the translated string. */
            text = Q_("download status|Failed");
            break;
        case EPHY_DOWNLOAD_DOWNLOADING:
        case EPHY_DOWNLOAD_PAUSED:
            if (percent == -1)
            {
                /* Translators: The text before the "|" is context to help you decide on
                 * the correct translation. You MUST OMIT it in the translated string. */
                text = Q_("download status|Unknown");
                percent = 0;
            }
            break;
        default:
            g_return_if_reached ();
    }

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

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

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

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

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

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

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

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

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

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

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

    priv->model = GTK_TREE_MODEL (liststore);

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

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

    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);
    }

    g_value_unset (&val);

    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);
    g_object_unref (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_return_if_fail (download != NULL);

    ephy_download_cancel ((EphyDownload*)download);
    downloader_view_remove_download (dv, download);

    g_value_unset (&val);
}

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;
}