path: root/widgets/misc/e-attachment-bar.c

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/*
 *  Authors: Ettore Perazzoli <ettore@ximian.com>
 *           Jeffrey Stedfast <fejj@ximian.com>
 *       Srinivasa Ragavan <sragavan@novell.com>
 *
 *  Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

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

#include <string.h>
#include <gtk/gtk.h>
#include <gio/gio.h>
#include <glade/glade.h>
#include <gconf/gconf.h>
#include <gconf/gconf-client.h>
#include <gdk/gdkkeysyms.h>
#include <glib/gi18n.h>
#include <glib/gstdio.h>
#include <libgnome/libgnome.h>

#ifdef HAVE_LIBGNOMEUI_GNOME_THUMBNAIL_H
#include <libgnomeui/gnome-thumbnail.h>
#endif

#include "e-attachment.h"
#include "e-attachment-bar.h"

#include <libedataserver/e-data-server-util.h>

#include <camel/camel-data-wrapper.h>
#include <camel/camel-iconv.h>
#include <camel/camel-mime-message.h>
#include <camel/camel-stream-fs.h>
#include <camel/camel-stream-null.h>
#include <camel/camel-stream-mem.h>
#include <camel/camel-stream-filter.h>
#include <camel/camel-mime-filter-bestenc.h>
#include <camel/camel-mime-part.h>

#include "e-util/e-util.h"
#include "e-util/e-gui-utils.h"
#include "e-util/e-icon-factory.h"
#include "e-util/e-error.h"
#include "e-util/e-mktemp.h"

#define ICON_WIDTH 64
#define ICON_SEPARATORS " /-_"
#define ICON_SPACING 2
#define ICON_ROW_SPACING ICON_SPACING
#define ICON_COL_SPACING ICON_SPACING
#define ICON_BORDER 2
#define ICON_TEXT_SPACING 2


static GnomeIconListClass *parent_class = NULL;

struct _EAttachmentBarPrivate {
    GtkWidget *attach;  /* attachment file dialogue, if active */

    /* Recent documents. Use this widget directly when bonoboui is obsoleted */
    GtkWidget *recent;

    gboolean batch_unref;
    GPtrArray *attachments;
    char *path;
};


enum {
    CHANGED,
    LAST_SIGNAL
};

static guint signals[LAST_SIGNAL] = { 0 };


static void update (EAttachmentBar *bar);

/* Attachment handling functions.  */

static void
attachment_destroy (EAttachmentBar *bar, EAttachment *attachment)
{
    if (bar->priv->batch_unref)
        return;

    if (g_ptr_array_remove (bar->priv->attachments, attachment)) {
        update (bar);
        g_signal_emit (bar, signals[CHANGED], 0);
    }
}

static void
attachment_changed_cb (EAttachment *attachment,
               gpointer data)
{
    update (E_ATTACHMENT_BAR (data));
}

static void
add_common (EAttachmentBar *bar, EAttachment *attachment)
{
    g_return_if_fail (attachment != NULL);

    g_ptr_array_add (bar->priv->attachments, attachment);
    g_object_weak_ref ((GObject *) attachment, (GWeakNotify) attachment_destroy, bar);
    g_signal_connect (attachment, "changed", G_CALLBACK (attachment_changed_cb), bar);

    update (bar);

    g_signal_emit (bar, signals[CHANGED], 0);
}

static void
add_from_mime_part (EAttachmentBar *bar, CamelMimePart *part)
{
    add_common (bar, e_attachment_new_from_mime_part (part));
}

static void
add_from_file (EAttachmentBar *bar, const char *file_name, const char *disposition)
{
    EAttachment *attachment;
    CamelException ex;

    camel_exception_init (&ex);

    if ((attachment = e_attachment_new (file_name, disposition, &ex))) {
        add_common (bar, attachment);
    } else {
        /* FIXME: Avoid using error from mailer */
        e_error_run ((GtkWindow *) gtk_widget_get_toplevel ((GtkWidget *) bar), "mail-composer:no-attach",
                 file_name, camel_exception_get_description (&ex), NULL);
        camel_exception_clear (&ex);
    }
}

/* get_system_thumbnail:
 * If filled store_uri, then creating thumbnail for it, otherwise, if is_available_local,
 * and attachment is not an application, then save to temp and create a thumbnail for the body.
 * Otherwise returns NULL (or if something goes wrong/library not available).
 */
static GdkPixbuf *
get_system_thumbnail (EAttachment *attachment, CamelContentType *content_type)
{
    GdkPixbuf *pixbuf = NULL;
#ifdef HAVE_LIBGNOMEUI_GNOME_THUMBNAIL_H
    struct stat file_stat;
    char *file_uri = NULL;
    gboolean is_tmp = FALSE;

    if (!attachment || !attachment->is_available_local)
        return NULL;

    if (attachment->store_uri && g_str_has_prefix (attachment->store_uri, "file://"))
        file_uri = attachment->store_uri;
    else if (attachment->body) {
        /* save part to the temp directory */
        char *tmp_file;

        is_tmp = TRUE;

        tmp_file = e_mktemp ("tmp-XXXXXX");
        if (tmp_file) {
            CamelStream *stream;
            char *mfilename = NULL;
            const char * filename;

            filename = camel_mime_part_get_filename (attachment->body);
            if (filename == NULL)
                filename = "unknown";
            else {
                char *utf8_mfilename;

                utf8_mfilename = g_strdup (filename);
                e_filename_make_safe (utf8_mfilename);
                mfilename = g_filename_from_utf8 ((const char *) utf8_mfilename, -1, NULL, NULL, NULL);
                g_free (utf8_mfilename);

                filename = (const char *) mfilename;
            }

            file_uri = g_strjoin (NULL, "file://", tmp_file, "-", filename, NULL);

            stream = camel_stream_fs_new_with_name (file_uri + 7, O_WRONLY | O_CREAT | O_TRUNC, 0644);
            if (stream) {
                CamelDataWrapper *content;

                content = camel_medium_get_content_object (CAMEL_MEDIUM (attachment->body));

                if (camel_data_wrapper_decode_to_stream (content, stream) == -1
                    || camel_stream_flush (stream) == -1) {
                    g_free (file_uri);
                    file_uri = NULL;
                }

                camel_object_unref (stream);
            } else {
                g_free (file_uri);
                file_uri = NULL;
            }

            g_free (mfilename);
            g_free (tmp_file);
        }
    }

    if (!file_uri || !g_str_has_prefix (file_uri, "file://")) {
        if (is_tmp)
            g_free (file_uri);

        return NULL;
    }

    if (stat (file_uri + 7, &file_stat) != -1 && S_ISREG (file_stat.st_mode)) {
        GnomeThumbnailFactory *th_factory;
        char *th_file;

        th_factory = gnome_thumbnail_factory_new (GNOME_THUMBNAIL_SIZE_NORMAL);
        th_file = gnome_thumbnail_factory_lookup (th_factory, file_uri, file_stat.st_mtime);

        if (th_file) {
            pixbuf = gdk_pixbuf_new_from_file (th_file, NULL);
            g_free (th_file);
        } else if (content_type) {
            char *mime = camel_content_type_simple (content_type);

            if (gnome_thumbnail_factory_can_thumbnail (th_factory, file_uri, mime, file_stat.st_mtime)) {
                pixbuf = gnome_thumbnail_factory_generate_thumbnail (th_factory, file_uri, mime);
                
                if (pixbuf && !is_tmp)
                    gnome_thumbnail_factory_save_thumbnail (th_factory, pixbuf, file_uri, file_stat.st_mtime);
            }

            g_free (mime);
        }

        g_object_unref (th_factory);
    }

    if (is_tmp) {
        /* clear the temp */
        g_remove (file_uri + 7);
        g_free (file_uri);
    }
#endif

    return pixbuf;
}

static GdkPixbuf *
scale_pixbuf (GdkPixbuf *pixbuf)
{
    int ratio, width, height;

    if (!pixbuf)
        return NULL;

    width = gdk_pixbuf_get_width (pixbuf);
    height = gdk_pixbuf_get_height (pixbuf);
    if (width >= height) {
        if (width > 48) {
            ratio = width / 48;
            width = 48;
            height = height / ratio;
            if (height == 0)
                height = 1;
        }
    } else {
        if (height > 48) {
            ratio = height / 48;
            height = 48;
            width = width / ratio;
            if (width == 0)
                width = 1;
        }
    }

    return e_icon_factory_pixbuf_scale (pixbuf, width, height);
}

/* Icon list contents handling.  */

static void
calculate_height_width(EAttachmentBar *bar, int *new_width, int *new_height)
{
        int width, height, icon_width;
        PangoFontMetrics *metrics;
        PangoContext *context;

        context = gtk_widget_get_pango_context ((GtkWidget *) bar);
        metrics = pango_context_get_metrics (context, ((GtkWidget *) bar)->style->font_desc, pango_context_get_language (context));
        width = PANGO_PIXELS (pango_font_metrics_get_approximate_char_width (metrics)) * 15;
    /* This should be *2, but the icon list creates too much space above ... */
    height = PANGO_PIXELS (pango_font_metrics_get_ascent (metrics) + pango_font_metrics_get_descent (metrics)) * 3;
    pango_font_metrics_unref (metrics);
    icon_width = ICON_WIDTH + ICON_SPACING + ICON_BORDER + ICON_TEXT_SPACING;

    if (new_width)
        *new_width = MAX (icon_width, width);

    if (new_height)
        *new_height = ICON_WIDTH + ICON_SPACING + ICON_BORDER + ICON_TEXT_SPACING + height;

    return;
}

void
e_attachment_bar_create_attachment_cache (EAttachment *attachment)
{

    CamelContentType *content_type;

    if (!attachment->body)
        return;

    content_type = camel_mime_part_get_content_type (attachment->body);

    if (camel_content_type_is(content_type, "image", "*")) {
        CamelDataWrapper *wrapper;
        CamelStreamMem *mstream;
        GdkPixbufLoader *loader;
        gboolean error = TRUE;
        GdkPixbuf *pixbuf;

        wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (attachment->body));
        mstream = (CamelStreamMem *) camel_stream_mem_new ();

        camel_data_wrapper_decode_to_stream (wrapper, (CamelStream *) mstream);

        /* Stream image into pixbuf loader */
        loader = gdk_pixbuf_loader_new ();
        error = !gdk_pixbuf_loader_write (loader, mstream->buffer->data, mstream->buffer->len, NULL);
        gdk_pixbuf_loader_close (loader, NULL);

        if (!error) {
            pixbuf = gdk_pixbuf_loader_get_pixbuf (loader);
            attachment->pixbuf_cache = scale_pixbuf (pixbuf);
            pixbuf = attachment->pixbuf_cache;
            g_object_ref(pixbuf);
        } else {
            attachment->pixbuf_cache = NULL;
            g_warning ("GdkPixbufLoader Error");
        }

        /* Destroy everything */
        g_object_unref (loader);
        camel_object_unref (mstream);
    }
}

static void
update (EAttachmentBar *bar)
{
    struct _EAttachmentBarPrivate *priv;
    GnomeIconList *icon_list;
    int bar_width, bar_height;
    int i;

    priv = bar->priv;
    icon_list = GNOME_ICON_LIST (bar);

    gnome_icon_list_freeze (icon_list);

    gnome_icon_list_clear (icon_list);

    /* FIXME could be faster, but we don't care.  */
    for (i = 0; i < priv->attachments->len; i++) {
        EAttachment *attachment;
        CamelContentType *content_type;
        char *size_string, *label;
        GdkPixbuf *pixbuf = NULL;
        const char *desc;

        attachment = priv->attachments->pdata[i];

        if (!attachment->is_available_local || !attachment->body) {
            if ((pixbuf = e_icon_factory_get_icon("mail-attachment", E_ICON_SIZE_DIALOG))) {
                attachment->index = gnome_icon_list_append_pixbuf (icon_list, pixbuf, NULL, "");
                g_object_unref (pixbuf);
            }
            continue;
        }

        content_type = camel_mime_part_get_content_type (attachment->body);
        /* Get the image out of the attachment
           and create a thumbnail for it */
        if ((pixbuf = attachment->pixbuf_cache)) {
            g_object_ref(pixbuf);
        } else if (camel_content_type_is(content_type, "image", "*")) {
            CamelDataWrapper *wrapper;
            CamelStreamMem *mstream;
            GdkPixbufLoader *loader;
            gboolean error = TRUE;

            wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (attachment->body));
            mstream = (CamelStreamMem *) camel_stream_mem_new ();

            camel_data_wrapper_decode_to_stream (wrapper, (CamelStream *) mstream);

            /* Stream image into pixbuf loader */
            loader = gdk_pixbuf_loader_new ();
            error = !gdk_pixbuf_loader_write (loader, mstream->buffer->data, mstream->buffer->len, NULL);
            gdk_pixbuf_loader_close (loader, NULL);

            if (!error) {
                pixbuf = gdk_pixbuf_loader_get_pixbuf (loader);
                attachment->pixbuf_cache = scale_pixbuf (pixbuf);
                pixbuf = attachment->pixbuf_cache;
                g_object_ref (pixbuf);
            } else {
                pixbuf = NULL;
                g_warning ("GdkPixbufLoader Error");
            }

            /* Destroy everything */
            g_object_unref (loader);
            camel_object_unref (mstream);
        } else if (!bar->expand && (pixbuf = get_system_thumbnail (attachment, content_type))) {
            attachment->pixbuf_cache = scale_pixbuf (pixbuf);
            pixbuf = attachment->pixbuf_cache;
            g_object_ref (pixbuf);
        }

        desc = camel_mime_part_get_description (attachment->body);
        if (!desc || *desc == '\0') {
            if (attachment->file_name)
                desc = attachment->file_name;
            else
                desc = camel_mime_part_get_filename (attachment->body);
        }

        if (!desc)
            desc = _("attachment");

        if (attachment->size && (size_string = g_format_size_for_display (attachment->size))) {
            label = g_strdup_printf ("%s (%s)", desc, size_string);
            g_free (size_string);
        } else
            label = g_strdup (desc);

        if (pixbuf == NULL) {
            char *mime_type;

            mime_type = camel_content_type_simple (content_type);
            pixbuf = e_icon_for_mime_type (mime_type, 48);
            if (pixbuf == NULL) {
                g_warning("cannot find icon for mime type %s (installation problem?)", mime_type);
                pixbuf = e_icon_factory_get_icon("mail-attachment", E_ICON_SIZE_DIALOG);
            }
            g_free (mime_type);

            /* remember this picture and use it later again */
            if (pixbuf)
                attachment->pixbuf_cache = g_object_ref (pixbuf);
        }

        if (pixbuf) {
            GdkPixbuf *pixbuf_orig = pixbuf;
            pixbuf = gdk_pixbuf_add_alpha (pixbuf_orig, TRUE, 255, 255, 255);

            /* gdk_pixbuf_add_alpha returns a newly allocated pixbuf,
               free the original one.
            */
            g_object_unref (pixbuf_orig);

            /* In case of a attachment bar, in a signed/encrypted part, display the status as a emblem*/
            if (attachment->sign) {
                /* Show the signature status at the right-bottom.*/
                GdkPixbuf *sign = NULL;
                int x, y;

                if (attachment->sign == CAMEL_CIPHER_VALIDITY_SIGN_BAD)
                    sign = e_icon_factory_get_icon ("stock_signature-bad", E_ICON_SIZE_MENU);
                else if (attachment->sign == CAMEL_CIPHER_VALIDITY_SIGN_GOOD)
                    sign = e_icon_factory_get_icon ("stock_signature-ok", E_ICON_SIZE_MENU);
                else
                    sign = e_icon_factory_get_icon ("stock_signature", E_ICON_SIZE_MENU);

                x = gdk_pixbuf_get_width (pixbuf) - 17;
                y = gdk_pixbuf_get_height (pixbuf) - 17;

                gdk_pixbuf_copy_area (sign, 0, 0, 16, 16, pixbuf, x, y);
                g_object_unref (sign);
            }

            if (attachment->encrypt) {
                /* Show the encryption status at the top left.*/
                GdkPixbuf *encrypt = e_icon_factory_get_icon ("stock_lock-ok", E_ICON_SIZE_MENU);

                gdk_pixbuf_copy_area (encrypt, 0, 0, 16, 16, pixbuf, 1, 1);
                g_object_unref (encrypt);
            }

            gnome_icon_list_append_pixbuf (icon_list, pixbuf, NULL, label);
            g_object_unref (pixbuf);
        }

        g_free (label);
    }

    gnome_icon_list_thaw (icon_list);

    /* Resize */
    if (bar->expand) {
        gtk_widget_get_size_request ((GtkWidget *) bar, &bar_width, &bar_height);

        if (bar->priv->attachments->len) {
            int per_col, rows, height, width;

            calculate_height_width(bar, &width, &height);
            per_col = bar_width / width;
            per_col = (per_col ? per_col : 1);
            rows = (bar->priv->attachments->len + per_col -1) / per_col;
            gtk_widget_set_size_request ((GtkWidget *) bar, bar_width, rows * height);
        }
    }
}

static void
update_remote_file (EAttachment *attachment, EAttachmentBar *bar)
{
    GnomeIconList *icon_list;
    GnomeIconTextItem *item;
    char *msg, *base;

    if (attachment->percentage == -1) {
        update (bar);
        return;
    }

    base = g_path_get_basename(attachment->file_name);
    msg = g_strdup_printf("%s (%d%%)", base, attachment->percentage);
    g_free(base);

    icon_list = GNOME_ICON_LIST (bar);

    gnome_icon_list_freeze (icon_list);

    item = gnome_icon_list_get_icon_text_item (icon_list, attachment->index);
    if (!item->is_text_allocated)
        g_free (item->text);

    gnome_icon_text_item_configure (item, item->x, item->y, item->width, item->fontname, msg, item->is_editable, TRUE);

    gnome_icon_list_thaw (icon_list);
}

void
e_attachment_bar_remove_selected (EAttachmentBar *bar)
{
    struct _EAttachmentBarPrivate *priv;
    EAttachment *attachment;
    int id, left, nrem = 0;
    GList *items;
    GPtrArray *temp_arr;

    g_return_if_fail (E_IS_ATTACHMENT_BAR (bar));

    priv = bar->priv;

    if (!(items = gnome_icon_list_get_selection ((GnomeIconList *) bar)))
        return;

    temp_arr = g_ptr_array_new ();
    while (items != NULL) {
        if ((id = GPOINTER_TO_INT (items->data) - nrem) < priv->attachments->len) {
            attachment = E_ATTACHMENT(g_ptr_array_index (priv->attachments, id));
            g_ptr_array_add (temp_arr, (gpointer)attachment);
            g_ptr_array_remove_index (priv->attachments, id);
            nrem++;
        }

        items = items->next;
    }

    g_ptr_array_foreach (temp_arr, (GFunc)g_object_unref, NULL);
    g_ptr_array_free (temp_arr, TRUE);

    update (bar);

    g_signal_emit (bar, signals[CHANGED], 0);

    id++;

    if ((left = gnome_icon_list_get_num_icons ((GnomeIconList *) bar)) > 0)
        gnome_icon_list_focus_icon ((GnomeIconList *) bar, left > id ? id : left - 1);
}

void
e_attachment_bar_set_width(EAttachmentBar *bar, int bar_width)
{
    int per_col, rows, height, width;

    calculate_height_width(bar, &width, &height);
    per_col = bar_width / width;
    per_col = (per_col ? per_col : 1);
    rows = (bar->priv->attachments->len + per_col - 1) / per_col;
    gtk_widget_set_size_request ((GtkWidget *)bar, bar_width, rows * height);
}

void
e_attachment_bar_edit_selected (EAttachmentBar *bar)
{
    struct _EAttachmentBarPrivate *priv;
    EAttachment *attachment;
    GList *items;
    int id;

    g_return_if_fail (E_IS_ATTACHMENT_BAR (bar));

    priv = bar->priv;

    items = gnome_icon_list_get_selection ((GnomeIconList *) bar);
    while (items != NULL) {
        if ((id = GPOINTER_TO_INT (items->data)) < priv->attachments->len) {
            attachment = priv->attachments->pdata[id];
            e_attachment_edit (attachment, GTK_WIDGET (bar));
        }

        items = items->next;
    }
}

GtkWidget **
e_attachment_bar_get_selector(EAttachmentBar *bar)
{
    g_return_val_if_fail (E_IS_ATTACHMENT_BAR (bar), NULL);

    return &bar->priv->attach;
}

/**
 * e_attachment_bar_get_selected:
 * @bar: an #EAttachmentBar object
 *
 * Returns a newly allocated #GSList of ref'd #EAttachment objects
 * representing the selected items in the #EAttachmentBar Icon List.
 **/
GSList *
e_attachment_bar_get_selected (EAttachmentBar *bar)
{
    struct _EAttachmentBarPrivate *priv;
    GSList *attachments = NULL;
    EAttachment *attachment;
    GList *items;
    int id;

    g_return_val_if_fail (E_IS_ATTACHMENT_BAR (bar), NULL);

    priv = bar->priv;

    items = gnome_icon_list_get_selection ((GnomeIconList *) bar);

    while (items != NULL) {
        if ((id = GPOINTER_TO_INT (items->data)) < priv->attachments->len) {
            attachment = priv->attachments->pdata[id];
            attachments = g_slist_prepend (attachments, attachment);
            g_object_ref (attachment);
        }

        items = items->next;
    }

    attachments = g_slist_reverse (attachments);

    return attachments;
}

/* FIXME: Cleanup this, since there is a api to get selected attachments */
/**
 * e_attachment_bar_get_attachment:
 * @bar: an #EAttachmentBar object
 * @id: Index of the desired attachment or -1 to request all selected attachments
 *
 * Returns a newly allocated #GSList of ref'd #EAttachment objects
 * representing the requested item(s) in the #EAttachmentBar Icon
 * List.
 **/
GSList *
e_attachment_bar_get_attachment (EAttachmentBar *bar, int id)
{
    struct _EAttachmentBarPrivate *priv;
    EAttachment *attachment;
    GSList *attachments;

    g_return_val_if_fail (E_IS_ATTACHMENT_BAR (bar), NULL);

    priv = bar->priv;

    if (id == -1 || id > priv->attachments->len)
        return e_attachment_bar_get_selected (bar);

    attachment = priv->attachments->pdata[id];
    attachments = g_slist_prepend (NULL, attachment);
    g_object_ref (attachment);

    return attachments;
}


/**
 * e_attachment_bar_get_all_attachments:
 * @bar: an #EAttachmentBar object
 *
 * Returns a newly allocated #GSList of ref'd #EAttachment objects.
 **/
GSList *
e_attachment_bar_get_all_attachments (EAttachmentBar *bar)
{
    struct _EAttachmentBarPrivate *priv;
    GSList *attachments = NULL;
    EAttachment *attachment;
    int i;

    g_return_val_if_fail (E_IS_ATTACHMENT_BAR (bar), NULL);

    priv = bar->priv;

    for (i = priv->attachments->len - 1; i >= 0; i--) {
        attachment = priv->attachments->pdata[i];
        if (attachment->is_available_local) {
            attachments = g_slist_prepend (attachments, attachment);
            g_object_ref (attachment);
        }
    }

    return attachments;
}

/* Just the GSList has to be freed by the caller */
GSList *
e_attachment_bar_get_parts (EAttachmentBar *bar)
{
    struct _EAttachmentBarPrivate *priv;
    EAttachment *attachment;
    GSList *parts = NULL;
    int i;

    g_return_val_if_fail (E_IS_ATTACHMENT_BAR (bar), NULL);

    priv = bar->priv;

    for (i = 0; i < priv->attachments->len; i++) {
        attachment = priv->attachments->pdata[i];
        if (attachment->is_available_local)
            parts = g_slist_prepend (parts, attachment->body);
    }

        return parts;
}

/* GtkObject methods.  */

static void
destroy (GtkObject *object)
{
    EAttachmentBar *bar = (EAttachmentBar *) object;
    struct _EAttachmentBarPrivate *priv = bar->priv;
    EAttachment *attachment;
    int i;

    if ((priv = bar->priv)) {
        priv->batch_unref = TRUE;
        for (i = 0; i < priv->attachments->len; i++) {
            attachment = priv->attachments->pdata[i];
            g_object_weak_unref ((GObject *) attachment, (GWeakNotify) attachment_destroy, bar);
            g_object_unref (attachment);
        }
        g_ptr_array_free (priv->attachments, TRUE);

        if (priv->attach)
            gtk_widget_destroy (priv->attach);

        if (priv->recent)
            gtk_widget_destroy (priv->recent);

        if (priv->path)
            g_free (priv->path);

        g_free (priv);
        bar->priv = NULL;
    }

    if (GTK_OBJECT_CLASS (parent_class)->destroy != NULL)
        (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}

static char *
temp_save_part (CamelMimePart *part, gboolean readonly)
{
    const char *filename;
    char *tmpdir, *path, *mfilename = NULL, *utf8_mfilename = NULL;
    CamelStream *stream;
    CamelDataWrapper *wrapper;

    if (!(tmpdir = e_mkdtemp ("evolution-tmp-XXXXXX")))
        return NULL;

    if (!(filename = camel_mime_part_get_filename (part))) {
        /* This is the default filename used for temporary file creation */
        filename = _("Unknown");
    } else {
        utf8_mfilename = g_strdup (filename);
        e_filename_make_safe (utf8_mfilename);
        mfilename = g_filename_from_utf8 ((const char *) utf8_mfilename, -1, NULL, NULL, NULL);
        g_free (utf8_mfilename);
        filename = (const char *) mfilename;
    }

    path = g_build_filename (tmpdir, filename, NULL);
    g_free (tmpdir);
    g_free (mfilename);

    wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part));
    if (readonly)
        stream = camel_stream_fs_new_with_name (path, O_RDWR|O_CREAT|O_TRUNC, 0444);
    else
        stream = camel_stream_fs_new_with_name (path, O_RDWR|O_CREAT|O_TRUNC, 0644);

    if (!stream) {
        /* TODO handle error conditions */
        g_message ("DEBUG: could not open the file to write\n");
        g_free (path);
        return NULL;
    }

    if (camel_data_wrapper_decode_to_stream (wrapper, (CamelStream *) stream) == -1) {
        g_free (path);
        camel_stream_close (stream);
        camel_object_unref (stream);
        g_message ("DEBUG: could not write to file\n");
        return NULL;
    }

    camel_stream_close(stream);
    camel_object_unref(stream);

    return path;
}

static void
eab_drag_data_get(EAttachmentBar *bar, GdkDragContext *drag, GtkSelectionData *data, guint info, guint time)
{
    struct _EAttachmentBarPrivate *priv = bar->priv;
    EAttachment *attachment;
    char *path, **uris;
    int len, n, i = 0;
    CamelURL *url;
    GList *items;

    if (info)
        return;

    items = gnome_icon_list_get_selection (GNOME_ICON_LIST (bar));
    len = g_list_length (items);

    uris = g_malloc0 (sizeof (char *) * (len + 1));

    for ( ; items != NULL; items = items->next) {
        if (!((n = GPOINTER_TO_INT (items->data)) < priv->attachments->len))
            continue;

        attachment = priv->attachments->pdata[n];

        if (!attachment->is_available_local)
            continue;

        if (attachment->store_uri) {
            uris[i++] = attachment->store_uri;
            continue;
        }

        /* If we are not able to save, ignore it */
        if (!(path = temp_save_part (attachment->body, FALSE)))
            continue;

        url = camel_url_new ("file://", NULL);
        camel_url_set_path (url, path);
        attachment->store_uri = camel_url_to_string (url, 0);
        camel_url_free (url);
        g_free (path);

        uris[i++] = attachment->store_uri;
    }

    uris[i] = NULL;

    gtk_selection_data_set_uris (data, uris);

    g_free (uris);

    return;
}

static gboolean
eab_button_release_event(EAttachmentBar *bar, GdkEventButton *event, gpointer dummy)
{
    GnomeIconList *icon_list = GNOME_ICON_LIST(bar);
    GList *selected;
    int length;
    GtkTargetEntry drag_types[] = {
        { "text/uri-list", 0, 0 },
    };

    if (event && event->button == 1) {
        selected = gnome_icon_list_get_selection(icon_list);
        length = g_list_length (selected);
        if (length)
            gtk_drag_source_set((GtkWidget *)bar, GDK_BUTTON1_MASK, drag_types, G_N_ELEMENTS(drag_types), GDK_ACTION_COPY);
        else
            gtk_drag_source_unset((GtkWidget *)bar);
    }

    return FALSE;
}

static gboolean
eab_button_press_event(EAttachmentBar *bar, GdkEventButton *event, gpointer dummy)
{
    GnomeIconList *icon_list = GNOME_ICON_LIST(bar);
    GList *selected = NULL, *tmp;
    int length, icon_number;
    gboolean take_selected = FALSE;
    GtkTargetEntry drag_types[] = {
        { "text/uri-list", 0, 0 },
    };

    selected = gnome_icon_list_get_selection(icon_list);
    length = g_list_length (selected);

    if (event) {
        icon_number = gnome_icon_list_get_icon_at(icon_list, event->x, event->y);
        if (icon_number < 0) {
            /* When nothing is selected, deselect all */
            gnome_icon_list_unselect_all (icon_list);
            length = 0;
            selected = NULL;
        }

        if (event->button == 1) {
            /* If something is selected, then allow drag or else help to select */
            if (length)
                gtk_drag_source_set((GtkWidget *)bar, GDK_BUTTON1_MASK, drag_types, G_N_ELEMENTS(drag_types), GDK_ACTION_COPY);
            else
                gtk_drag_source_unset((GtkWidget *)bar);
            return FALSE;
        }

        /* If not r-click dont progress any more.*/
        if (event->button != 3)
            return FALSE;

        /* When a r-click on something, if it is in the already selected list, consider a r-click of multiple things
         * or deselect all and select only this for r-click
         */
        if (icon_number >= 0) {
            for (tmp = selected; tmp; tmp = tmp->next) {
                if (GPOINTER_TO_INT(tmp->data) == icon_number)
                    take_selected = TRUE;
            }

            if (!take_selected) {
                gnome_icon_list_unselect_all(icon_list);
                gnome_icon_list_select_icon(icon_list, icon_number);
            }
        }
    }

    return FALSE;
}

static gboolean
eab_icon_clicked_cb (EAttachmentBar *bar, GdkEvent *event, gpointer *dummy)
{
    EAttachment *attachment;
    GError *error = NULL;
    gboolean ret = FALSE;
    CamelURL *url;
    char *path;
    GSList *p;

    if (E_IS_ATTACHMENT_BAR (bar) && event->type == GDK_2BUTTON_PRESS) {
        p = e_attachment_bar_get_selected (bar);
        if (p && p->next == NULL) {
            attachment = p->data;

            /* Check if the file is stored already */
            if (!attachment->store_uri) {
                path = temp_save_part (attachment->body, TRUE);
                url = camel_url_new ("file://", NULL);
                camel_url_set_path (url, path);
                attachment->store_uri = camel_url_to_string (url, 0);
                camel_url_free (url);
                g_free (path);
            }

            /* launch the url now */
            gnome_url_show (attachment->store_uri, &error);
            if (error) {
                g_message ("DEBUG: Launch failed: %s\n", error->message);
                g_error_free (error);
                error = NULL;
            }

            ret = TRUE;
        }

        if (p) {
            g_slist_foreach (p, (GFunc) g_object_unref, NULL);
            g_slist_free (p);
        }
    }

    return ret;
}

/* Initialization.  */

static void
class_init (EAttachmentBarClass *klass)
{
    GtkObjectClass *object_class;

    object_class = GTK_OBJECT_CLASS (klass);

    parent_class = g_type_class_ref (gnome_icon_list_get_type ());

    object_class->destroy = destroy;

    /* Setup signals.  */

    signals[CHANGED] =
        g_signal_new ("changed",
                  E_TYPE_ATTACHMENT_BAR,
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (EAttachmentBarClass, changed),
                  NULL, NULL,
                  g_cclosure_marshal_VOID__VOID,
                  G_TYPE_NONE, 0);
}

static void
init (EAttachmentBar *bar)
{
    struct _EAttachmentBarPrivate *priv;

    priv = g_new (struct _EAttachmentBarPrivate, 1);

    priv->attach = NULL;
    priv->batch_unref = FALSE;
    priv->attachments = g_ptr_array_new ();

    priv->recent = gtk_recent_chooser_menu_new ();
    gtk_recent_chooser_menu_set_show_numbers (GTK_RECENT_CHOOSER_MENU (priv->recent), TRUE);
    gtk_recent_chooser_set_sort_type (GTK_RECENT_CHOOSER (priv->recent), GTK_RECENT_SORT_MRU);
    gtk_recent_chooser_set_show_not_found (GTK_RECENT_CHOOSER (priv->recent), FALSE);
    gtk_recent_chooser_set_show_private (GTK_RECENT_CHOOSER (priv->recent), FALSE);
    gtk_recent_chooser_set_show_icons (GTK_RECENT_CHOOSER (priv->recent), TRUE);
    gtk_recent_chooser_set_show_tips (GTK_RECENT_CHOOSER (priv->recent), TRUE);

    priv->path = NULL;

    bar->priv = priv;
    bar->expand = FALSE;
}


GType
e_attachment_bar_get_type (void)
{
    static GType type = 0;

    if (type == 0) {
        static const GTypeInfo info = {
            sizeof (EAttachmentBarClass),
            NULL, NULL,
            (GClassInitFunc) class_init,
            NULL, NULL,
            sizeof (EAttachmentBar),
            0,
            (GInstanceInitFunc) init,
        };

        type = g_type_register_static (GNOME_TYPE_ICON_LIST, "EAttachmentBar", &info, 0);
    }

    return type;
}

GtkWidget *
e_attachment_bar_new (GtkAdjustment *adj)
{
    EAttachmentBar *new;
    GnomeIconList *icon_list;
    int icon_width, window_height;

    new = g_object_new (e_attachment_bar_get_type (), NULL);

    icon_list = GNOME_ICON_LIST (new);

    calculate_height_width (new, &icon_width, &window_height);

    gnome_icon_list_construct (icon_list, icon_width, adj, 0);

    gtk_widget_set_size_request (GTK_WIDGET (new), icon_width * 4, window_height);

        GTK_WIDGET_SET_FLAGS (new, GTK_CAN_FOCUS);

    gnome_icon_list_set_separators (icon_list, ICON_SEPARATORS);
    gnome_icon_list_set_row_spacing (icon_list, ICON_ROW_SPACING);
    gnome_icon_list_set_col_spacing (icon_list, ICON_COL_SPACING);
    gnome_icon_list_set_icon_border (icon_list, ICON_BORDER);
    gnome_icon_list_set_text_spacing (icon_list, ICON_TEXT_SPACING);
    gnome_icon_list_set_selection_mode (icon_list, GTK_SELECTION_MULTIPLE);

    atk_object_set_name (gtk_widget_get_accessible (GTK_WIDGET (new)),
                 _("Attachment Bar"));

    g_signal_connect (new, "button_release_event", G_CALLBACK(eab_button_release_event), NULL);
    g_signal_connect (new, "button_press_event", G_CALLBACK(eab_button_press_event), NULL);
    g_signal_connect (new, "drag-data-get", G_CALLBACK(eab_drag_data_get), NULL);
    g_signal_connect (icon_list, "event", G_CALLBACK (eab_icon_clicked_cb), NULL);

    return GTK_WIDGET (new);
}

static char *
get_default_charset (void)
{
    GConfClient *gconf;
    const char *locale;
    char *charset;

    gconf = gconf_client_get_default ();
    charset = gconf_client_get_string (gconf, "/apps/evolution/mail/composer/charset", NULL);

    if (!charset || charset[0] == '\0') {
        g_free (charset);
        charset = gconf_client_get_string (gconf, "/apps/evolution/mail/format/charset", NULL);
        if (charset && charset[0] == '\0') {
            g_free (charset);
            charset = NULL;
        }
    }

    g_object_unref (gconf);

    if (!charset && (locale = camel_iconv_locale_charset ()))
        charset = g_strdup (locale);

    return charset ? charset : g_strdup ("us-ascii");
}

static void
attach_to_multipart (CamelMultipart *multipart,
             EAttachment *attachment,
             const char *default_charset)
{
    CamelContentType *content_type;
    CamelDataWrapper *content;

    if (!attachment->body)
        return;

    content_type = camel_mime_part_get_content_type (attachment->body);
    content = camel_medium_get_content_object (CAMEL_MEDIUM (attachment->body));

    if (!CAMEL_IS_MULTIPART (content)) {
        if (camel_content_type_is (content_type, "text", "*")) {
            CamelTransferEncoding encoding;
            CamelStreamFilter *filter_stream;
            CamelMimeFilterBestenc *bestenc;
            CamelStream *stream;
            const char *charset;
            char *buf = NULL;
            char *type;

            charset = camel_content_type_param (content_type, "charset");

            stream = camel_stream_null_new ();
            filter_stream = camel_stream_filter_new_with_stream (stream);
            bestenc = camel_mime_filter_bestenc_new (CAMEL_BESTENC_GET_ENCODING);
            camel_stream_filter_add (filter_stream, CAMEL_MIME_FILTER (bestenc));
            camel_object_unref (stream);

            camel_data_wrapper_decode_to_stream (content, CAMEL_STREAM (filter_stream));
            camel_object_unref (filter_stream);

            encoding = camel_mime_filter_bestenc_get_best_encoding (bestenc, CAMEL_BESTENC_8BIT);
            camel_mime_part_set_encoding (attachment->body, encoding);

            if (encoding == CAMEL_TRANSFER_ENCODING_7BIT) {
                /* the text fits within us-ascii so this is safe */
                /* FIXME: check that this isn't iso-2022-jp? */
                default_charset = "us-ascii";
            } else if (!charset) {
                if (!default_charset)
                    default_charset = buf = get_default_charset ();

                /* FIXME: We should really check that this fits within the
                                   default_charset and if not find one that does and/or
                   allow the user to specify? */
            }

            if (!charset) {
                /* looks kinda nasty, but this is how ya have to do it */
                camel_content_type_set_param (content_type, "charset", default_charset);
                type = camel_content_type_format (content_type);
                camel_mime_part_set_content_type (attachment->body, type);
                g_free (type);
                g_free (buf);
            }

            camel_object_unref (bestenc);
        } else if (!CAMEL_IS_MIME_MESSAGE (content)) {
            camel_mime_part_set_encoding (attachment->body, CAMEL_TRANSFER_ENCODING_BASE64);
        }
    }

    camel_multipart_add_part (multipart, attachment->body);
}

void
e_attachment_bar_to_multipart (EAttachmentBar *bar, CamelMultipart *multipart, const char *default_charset)
{
    struct _EAttachmentBarPrivate *priv;
    EAttachment *attachment;
    int i;

    g_return_if_fail (E_IS_ATTACHMENT_BAR (bar));
    g_return_if_fail (CAMEL_IS_MULTIPART (multipart));

    priv = bar->priv;

    for (i = 0; i < priv->attachments->len; i++) {
        attachment = priv->attachments->pdata[i];
        if (attachment->is_available_local)
            attach_to_multipart (multipart, attachment, default_charset);
    }
}

guint
e_attachment_bar_get_num_attachments (EAttachmentBar *bar)
{
    g_return_val_if_fail (E_IS_ATTACHMENT_BAR (bar), 0);

    return bar->priv->attachments->len;
}

void
e_attachment_bar_attach (EAttachmentBar *bar, const char *file_name, const char *disposition)
{
    g_return_if_fail (E_IS_ATTACHMENT_BAR (bar));
    g_return_if_fail (file_name != NULL && disposition != NULL);

    add_from_file (bar, file_name, disposition);
}

void
e_attachment_bar_add_attachment (EAttachmentBar *bar, EAttachment *attachment)
{
    g_return_if_fail (E_IS_ATTACHMENT_BAR (bar));

    add_common (bar, attachment);
}

void
e_attachment_bar_add_attachment_silent (EAttachmentBar *bar, EAttachment *attachment)
{
    g_return_if_fail (E_IS_ATTACHMENT_BAR (bar));
    g_return_if_fail (attachment != NULL);

    g_ptr_array_add (bar->priv->attachments, attachment);
    g_object_weak_ref ((GObject *) attachment, (GWeakNotify) attachment_destroy, bar);
    g_signal_connect (attachment, "changed", G_CALLBACK (attachment_changed_cb), bar);


    g_signal_emit (bar, signals[CHANGED], 0);
}

void
e_attachment_bar_refresh (EAttachmentBar *bar)
{
    update (bar);

}

int
e_attachment_bar_get_download_count (EAttachmentBar *bar)
{
    struct _EAttachmentBarPrivate *priv;
    EAttachment *attachment;
    int i, n = 0;

    g_return_val_if_fail (E_IS_ATTACHMENT_BAR (bar), 0);

    priv = bar->priv;

    for (i = 0; i < priv->attachments->len; i++) {
        attachment = priv->attachments->pdata[i];
        if (!attachment->is_available_local)
            n++;
    }

    return n;
}

void
e_attachment_bar_attach_remote_file (EAttachmentBar *bar, const char *url, const char *disposition)
{
    EAttachment *attachment;
    CamelException ex;
    GtkWindow *parent;

    g_return_if_fail (E_IS_ATTACHMENT_BAR (bar));

    if (!bar->priv->path)
        bar->priv->path = e_mkdtemp ("attach-XXXXXX");

    parent = (GtkWindow *) gtk_widget_get_toplevel ((GtkWidget *) bar);
    camel_exception_init (&ex);
    if ((attachment = e_attachment_new_remote_file (parent, url, disposition, bar->priv->path, &ex))) {
        add_common (bar, attachment);
        g_signal_connect (attachment, "update", G_CALLBACK (update_remote_file), bar);
    } else {
        e_error_run (parent, "mail-composer:no-attach",
                 url, camel_exception_get_description (&ex), NULL);
        camel_exception_clear (&ex);
    }
}

void
e_attachment_bar_attach_mime_part (EAttachmentBar *bar, CamelMimePart *part)
{
    g_return_if_fail (E_IS_ATTACHMENT_BAR (bar));

    add_from_mime_part (bar, part);
}

/* FIXME: Remove this API if nobody uses it */
void 
e_attachment_bar_bonobo_ui_populate_with_recent (BonoboUIComponent *uic, const char *path,
                         EAttachmentBar *bar, 
                         BonoboUIVerbFn verb_cb, gpointer user_data)
{
    struct _EAttachmentBarPrivate *priv;
    GList *items, *l;
    gint limit, i;
    GString *menuitems;
    char *encoded_label, *label;

    g_return_if_fail (E_IS_ATTACHMENT_BAR (bar));

    priv = bar->priv;
    limit = gtk_recent_chooser_get_limit (GTK_RECENT_CHOOSER (priv->recent));
    items = gtk_recent_chooser_get_items (GTK_RECENT_CHOOSER (priv->recent));

    menuitems = g_string_new ("<submenu");
    g_string_append (menuitems, " name=\"RecentDocsSubmenu\"");
    g_string_append_printf (menuitems, " sensitive=\"%s\"", items ? "1" : "0");
    g_string_append_printf (menuitems, " label=\"%s\"", _("Recent Docu_ments"));
    g_string_append (menuitems, ">\n");

    for (l = g_list_first (items), i = 1; l && i <= limit; l = l->next, ++i) {
        GtkRecentInfo *info = ((GtkRecentInfo *)(l->data));
        const gchar *info_dn = gtk_recent_info_get_display_name (info);
        char *display_name, *u;

        /* escape _'s in the display name so that it doesn't become an underline in a GtkLabel */
        if ((u = strchr (info_dn, '_'))) {
            int extra = 1;
            char *d;
            const char *s;

            while ((u = strchr (u + 1, '_')))
                extra++;

            d = display_name = g_alloca (strlen (info_dn) + extra + 1);
            s = info_dn;
            while (*s != '\0') {
                if (*s == '_')
                    *d++ = '_';
                *d++ = *s++;
            }
            *d = '\0';
        } else
            display_name = (char *) info_dn;

        /* Add menu item */
        label = g_strdup (display_name);
        encoded_label = bonobo_ui_util_encode_str (label);
        g_string_append_printf (menuitems, 
                    "  <menuitem name=\"Recent-%d\" verb=\"\" label=\"%s\"/>\n",
                    i, encoded_label);
        g_free (encoded_label);
        g_free (label);
    }

    g_string_append (menuitems, "</submenu>\n");

    bonobo_ui_component_set (uic, path, menuitems->str, NULL);

    g_string_free (menuitems, TRUE);

    /* Add uri prop */
    for (l = g_list_first (items), i = 1; l && i <= limit; l = l->next, ++i) {
        GtkRecentInfo *info = ((GtkRecentInfo *)(l->data));
        const gchar *info_uri = gtk_recent_info_get_uri (info);
        label = g_strdup_printf ("/commands/Recent-%d", i);
        bonobo_ui_component_set_prop (uic, label, "uri", info_uri, NULL);
        g_free (label);
    }

    /* Add verb */
    for (l = g_list_first (items), i = 1; l && i <= limit; l = l->next, ++i) {
        label = g_strdup_printf ("Recent-%d", i);
        bonobo_ui_component_add_verb (uic, label, verb_cb, user_data);
        g_free (label);
    }

    for (l = g_list_first (items); l; l = l->next)
        gtk_recent_info_unref ((GtkRecentInfo *)(l->data));
    g_list_free (items);
}

static void
action_recent_cb (GtkAction *action, 
          EAttachmentBar *attachment_bar)
{
    GtkRecentChooser *chooser;
    GFile *file;
    gchar *uri;

    chooser = GTK_RECENT_CHOOSER (action);

    /* Wish: gtk_recent_chooser_get_current_file() */
    uri = gtk_recent_chooser_get_current_uri (chooser);
    file = g_file_new_for_uri (uri);
    g_free (uri);

    if (g_file_is_native (file))
        e_attachment_bar_attach (
            E_ATTACHMENT_BAR (attachment_bar),
            g_file_get_path (file), "attachment");
    else
        e_attachment_bar_attach_remote_file (
            E_ATTACHMENT_BAR (attachment_bar),
            g_file_get_uri (file), "attachment");

    g_object_unref (file);
}

GtkAction *
e_attachment_bar_recent_action_new (EAttachmentBar *bar, 
                const gchar *action_name,
                const gchar *action_label)
{
    GtkAction *action;
    GtkRecentChooser *chooser;

    g_return_val_if_fail (E_IS_ATTACHMENT_BAR (bar), NULL);

    action = gtk_recent_action_new (
        action_name, action_label, NULL, NULL);
    gtk_recent_action_set_show_numbers (GTK_RECENT_ACTION (action), TRUE);

    chooser = GTK_RECENT_CHOOSER (action);
    gtk_recent_chooser_set_show_icons (chooser, TRUE);
    gtk_recent_chooser_set_show_not_found (chooser, FALSE);
    gtk_recent_chooser_set_show_private (chooser, FALSE);
    gtk_recent_chooser_set_show_tips (chooser, TRUE);
    gtk_recent_chooser_set_sort_type (chooser, GTK_RECENT_SORT_MRU);

    g_signal_connect (
        action, "item-activated",
        G_CALLBACK (action_recent_cb), bar);

    return action;
}