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 1999-2005 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., 59 Temple Street #330, Boston, MA 02111-1307, USA.
 *
 */

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

#include <string.h>
#include <gtk/gtk.h>
#include <glade/glade.h>
#include <gconf/gconf.h>
#include <gconf/gconf-client.h>
#include <gdk/gdkkeysyms.h>
#include <libgnomevfs/gnome-vfs-mime-handlers.h>
#include <glib/gi18n.h>
#include <libgnome/libgnome.h>

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

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

#include <camel/camel-data-wrapper.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 */
    
    gboolean batch_unref;
    GPtrArray *attachments;
    char *path;
};


enum {
    CHANGED,
    LAST_SIGNAL
};

static guint signals[LAST_SIGNAL] = { 0 };


static void update (EAttachmentBar *bar);


static char *
size_to_string (gulong size)
{
    char *size_string;
    
    /* FIXME: The following should probably go into a separate module, as
           we might have to do the same thing in other places as well.  Also,
       I am not sure this will be OK for all the languages.  */

    size_string = gnome_vfs_format_file_size_for_display (size);

    return size_string;
}

/* 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);
    }
}


/* 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;

    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) {
            int ratio, width, height;
            
            /* Shrink pixbuf */
            pixbuf = gdk_pixbuf_loader_get_pixbuf (loader);
            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;
                }
            }
            
            attachment->pixbuf_cache = gdk_pixbuf_scale_simple (pixbuf, width,height,GDK_INTERP_BILINEAR);
            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) {
            /* stock_attach would be better, but its fugly scaled up */
            if ((pixbuf = e_icon_factory_get_icon("stock_unknown", 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) {
                int ratio, width, height;
                
                /* Shrink pixbuf */
                pixbuf = gdk_pixbuf_loader_get_pixbuf (loader);
                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;
                    }
                }
                
                attachment->pixbuf_cache = gdk_pixbuf_scale_simple (pixbuf, width, height,
                                            GDK_INTERP_BILINEAR);
                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);
        }
        
        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 = size_to_string (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);
                /* stock_attach would be better, but its fugly scaled up */
                pixbuf = e_icon_factory_get_icon("stock_unknown", E_ICON_SIZE_DIALOG);
            }
            g_free (mime_type);
        }
        
        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->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->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 = e_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;
    
    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);
}

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;
    
    g_return_if_fail (E_IS_ATTACHMENT_BAR (bar));
    
    if (!bar->priv->path)
        bar->priv->path = e_mkdtemp ("attach-XXXXXX");
    
    camel_exception_init (&ex);
    if ((attachment = e_attachment_new_remote_file (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 ((GtkWindow *) gtk_widget_get_toplevel ((GtkWidget *) bar), "mail-composer:no-attach",
                 attachment->file_name, 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);
}