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path: root/widgets/misc/e-attachment-bar.c
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/* -*- 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 <libgnome/gnome-i18n.h>

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

#include <libedataserver/e-iconv.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 */

    GList *attachments;
    guint num_attachments;
    gchar *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.  */
    
    if (size < 1e3L) {
        size_string = NULL;
    } else {
        gdouble displayed_size;
        
        if (size < 1e6L) {
            displayed_size = (gdouble) size / 1.0e3;
            size_string = g_strdup_printf (_("%.0fK"), displayed_size);
        } else if (size < 1e9L) {
            displayed_size = (gdouble) size / 1.0e6;
            size_string = g_strdup_printf (_("%.0fM"), displayed_size);
        } else {
            displayed_size = (gdouble) size / 1.0e9;
            size_string = g_strdup_printf (_("%.0fG"), displayed_size);
        }
    }
    
    return size_string;
}

/* Attachment handling functions.  */

static void
free_attachment_list (EAttachmentBar *bar)
{
    EAttachmentBarPrivate *priv;
    GList *p;
    
    priv = bar->priv;
    
    for (p = priv->attachments; p != NULL; p = p->next)
        g_object_unref (p->data);
    
    priv->attachments = NULL;
}

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_signal_connect (attachment, "changed",
              G_CALLBACK (attachment_changed_cb),
              bar);
    
    bar->priv->attachments = g_list_append (bar->priv->attachments,
                        attachment);
    bar->priv->num_attachments++;
    
    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);
    attachment = e_attachment_new (file_name, disposition, &ex);
    if (attachment) {
        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);
    }
}

static void
remove_attachment (EAttachmentBar *bar,
           EAttachment *attachment)
{
    g_return_if_fail (E_IS_ATTACHMENT_BAR (bar));
    g_return_if_fail (g_list_find (bar->priv->attachments, attachment) != NULL);

    bar->priv->attachments = g_list_remove (bar->priv->attachments,
                        attachment);
    bar->priv->num_attachments--;
    if (attachment->editor_gui != NULL) {
        GtkWidget *dialog = glade_xml_get_widget (attachment->editor_gui, "dialog");
        g_signal_emit_by_name (dialog, "response", GTK_RESPONSE_CLOSE);
    }
    
    g_object_unref(attachment);
    
    g_signal_emit (bar, signals[CHANGED], 0);
}


/* 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;
        GnomeIconList *icon_list;

    icon_list = GNOME_ICON_LIST (bar);
            
        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;
}

static void
update (EAttachmentBar *bar)
{
    EAttachmentBarPrivate *priv;
    GnomeIconList *icon_list;
    GList *p;
    int bar_width, bar_height;
    
    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 (p = priv->attachments; p != NULL; p = p->next) {
        EAttachment *attachment;
        CamelContentType *content_type;
        char *size_string, *label;
        GdkPixbuf *pixbuf=NULL;
        const char *desc;
        
        attachment = p->data;

        if (!attachment->is_available_local) {
            /* stock_attach would be better, but its fugly scaled up */
            pixbuf = e_icon_factory_get_icon("stock_unknown", E_ICON_SIZE_DIALOG);
            if (pixbuf) {
                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 */
        pixbuf = attachment->pixbuf_cache;
        if (pixbuf) {
            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;
                    }
                } else {
                    if (height > 48) {
                        ratio = height / 48;
                        height = 48;
                        width = width / ratio;
                    }
                }
                
                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')
            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) {
            pixbuf = gdk_pixbuf_add_alpha (pixbuf, TRUE, 255, 255, 255);

            /* 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->num_attachments) {
            int per_col, rows, height, width;
    
            calculate_height_width(bar, &width, &height);
            per_col = bar_width / width;
            rows = bar->priv->num_attachments / per_col;
            gtk_widget_set_size_request ((GtkWidget *)bar, bar_width, (rows+1) * height);
        }
    }
}

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

    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)
{
    GnomeIconList *icon_list;
    EAttachment *attachment;
    GList *attachment_list, *p;
    int num = 0, left, dlen;

    g_return_if_fail (bar != NULL);
    g_return_if_fail (E_IS_ATTACHMENT_BAR (bar));
    
    icon_list = GNOME_ICON_LIST (bar);
    
    /* Weee!  I am especially proud of this piece of cheesy code: it is
           truly awful.  But unless one attaches a huge number of files, it
           will not be as greedy as intended.  FIXME of course.  */
    
    attachment_list = NULL;
    p = gnome_icon_list_get_selection (icon_list);
    dlen = g_list_length (p);
    for ( ; p != NULL; p = p->next) {
        num = GPOINTER_TO_INT (p->data);
        attachment = E_ATTACHMENT (g_list_nth_data (bar->priv->attachments, num));

        /* We need to check if there are duplicated index in the return list of 
           gnome_icon_list_get_selection() because of gnome bugzilla bug #122356.
           FIXME in the future. */

        if (g_list_find (attachment_list, attachment) == NULL) {
            attachment_list = g_list_prepend (attachment_list, attachment);
        }
    }
    
    for (p = attachment_list; p != NULL; p = p->next)
        remove_attachment (bar, E_ATTACHMENT (p->data));
    
    g_list_free (attachment_list);
    
    update (bar);
    
    left = gnome_icon_list_get_num_icons (icon_list);
    num = num - dlen + 1;
    if (left > 0)
        gnome_icon_list_focus_icon (icon_list, left > num ? num : left - 1);
}

void
e_attachment_bar_edit_selected (EAttachmentBar *bar)
{
    GnomeIconList *icon_list;
    GList *selection, *attach;
    int num;

    g_return_if_fail (bar != NULL);
    g_return_if_fail (E_IS_ATTACHMENT_BAR (bar));
    
    icon_list = GNOME_ICON_LIST (bar);
    
    selection = gnome_icon_list_get_selection (icon_list);
    if (selection) {
        num = GPOINTER_TO_INT (selection->data);
        attach = g_list_nth (bar->priv->attachments, num);
        if (attach)
            e_attachment_edit ((EAttachment *)attach->data, GTK_WIDGET (bar));
    }
}

GtkWidget **
e_attachment_bar_get_selector(EAttachmentBar *bar)
{
    g_return_val_if_fail (bar != NULL, 0);
    g_return_val_if_fail (E_IS_ATTACHMENT_BAR (bar), 0);
    
    return &bar->priv->attach;
}

GSList *
e_attachment_bar_get_selected (EAttachmentBar *bar)
{
    GSList *attachments = NULL;
    GList *p;

    g_return_val_if_fail (bar != NULL, 0);
    g_return_val_if_fail (E_IS_ATTACHMENT_BAR (bar), 0);

    p = gnome_icon_list_get_selection((GnomeIconList *)bar);
    for ( ; p != NULL; p = p->next) {
        int num = GPOINTER_TO_INT(p->data);
        EAttachment *attachment = g_list_nth_data(bar->priv->attachments, num);
            
        if (attachment && g_slist_find(attachments, attachment) == NULL) {
            g_object_ref(attachment);
            attachments = g_slist_prepend(attachments, attachment);
        }
    }
    attachments = g_slist_reverse(attachments);
    
    return attachments;
}

/* FIXME: Cleanup this, since there is a api to get selected attachments */
/* if id != -1, then use it as an index for target of the popup */
GSList *
e_attachment_bar_get_attachment (EAttachmentBar *bar, int id)
{
    GSList *attachments = NULL;
    GList *p;
    EAttachment *attachment;

    g_return_val_if_fail (bar != NULL, 0);
    g_return_val_if_fail (E_IS_ATTACHMENT_BAR (bar), 0);

    /* We need to check if there are duplicated index in the return list of 
       gnome_icon_list_get_selection() because of gnome bugzilla bug #122356.
       FIXME in the future. */

    if (id == -1
        || (attachment = g_list_nth_data(bar->priv->attachments, id)) == NULL) {
        p = gnome_icon_list_get_selection((GnomeIconList *)bar);
        for ( ; p != NULL; p = p->next) {
            int num = GPOINTER_TO_INT(p->data);
            EAttachment *attachment = g_list_nth_data(bar->priv->attachments, num);
            
            if (attachment && g_slist_find(attachments, attachment) == NULL) {
                g_object_ref(attachment);
                attachments = g_slist_prepend(attachments, attachment);
            }
        }
        attachments = g_slist_reverse(attachments);
    } else {
        g_object_ref(attachment);
        attachments = g_slist_prepend(attachments, attachment);
    }
    
    return attachments;
}

/* Just the GSList has to be freed by the caller */
GSList *
e_attachment_bar_get_parts (EAttachmentBar *bar)
{
        EAttachment *attachment;
        GList *p = NULL;
    GSList *part_list = NULL;

    g_return_val_if_fail (bar != NULL, 0);
    g_return_val_if_fail (E_IS_ATTACHMENT_BAR (bar), 0);

        for ( p = bar->priv->attachments; p!= NULL; p = p->next) {
                attachment = p->data;
                if (attachment && attachment->is_available_local)
                        part_list = g_slist_prepend(part_list, attachment->body);
        }
    
        return part_list;
}

/* GtkObject methods.  */

static void
destroy (GtkObject *object)
{
    EAttachmentBar *bar;
    
    bar = E_ATTACHMENT_BAR (object);
    
    if (bar->priv) {
        free_attachment_list (bar);

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

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

        g_free (bar->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)
{
    const char *filename;
    char *tmpdir, *path, *mfilename = NULL;
    CamelStream *stream;
    CamelDataWrapper *wrapper;

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

    filename = camel_mime_part_get_filename (part);
    if (filename == NULL) {
        /* This is the default filename used for temporary file creation */
        filename = _("Unknown");
    } else {
        mfilename = g_strdup(filename);
        e_filename_make_safe(mfilename);
        filename = mfilename;
    }

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

    wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (part));
    stream = camel_stream_fs_new_with_name (path, O_RDWR|O_CREAT|O_TRUNC, 0600);

    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)
{
    char *path;
    GList *tmp;
    gchar **uris;
    int length, i=0;

    if (info)
        return;
    
    tmp = gnome_icon_list_get_selection (GNOME_ICON_LIST(bar));
    length = g_list_length (tmp);

    uris = g_malloc0(sizeof(bar) * (length+1));

    for (; tmp; tmp = tmp->next) {
        int num = GPOINTER_TO_INT(tmp->data);
        EAttachment *attachment = g_list_nth_data(bar->priv->attachments, num); 
        char *uri;

        if (!attachment->is_available_local)
            continue;

        uri = g_object_get_data((GObject *)attachment, "e-drag-uri");
        if (uri) {
            uris[i] = uri;
            i++;
            continue;
        }
        path = temp_save_part(attachment->body);
        /* If we are not able to save, ignore it*/
        if (path == NULL) 
            continue;
        
        uri = g_strdup_printf("file://%s\r\n", path);
        g_free(path);
        g_object_set_data_full((GObject *)attachment, "e-drag-uri", uri, g_free);
        uris[i] = uri;
        i++;
    }
    uris[i]=0;
    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;
}

/* Initialization.  */

static void
class_init (EAttachmentBarClass *klass)
{
    GtkObjectClass *object_class;
    GtkWidgetClass *widget_class;
    GnomeIconListClass *icon_list_class;
    
    object_class = GTK_OBJECT_CLASS (klass);
    widget_class = GTK_WIDGET_CLASS (klass);
    icon_list_class = GNOME_ICON_LIST_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)
{
    EAttachmentBarPrivate *priv;
    
    priv = g_new (EAttachmentBarPrivate, 1);
    
    priv->attach = NULL;
    priv->attachments = NULL;
    priv->num_attachments = 0;
    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);
    
    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)
{
    EAttachmentBarPrivate *priv;
    GList *p;
    
    g_return_if_fail (E_IS_ATTACHMENT_BAR (bar));
    g_return_if_fail (CAMEL_IS_MULTIPART (multipart));
    
    priv = bar->priv;
    
    for (p = priv->attachments; p != NULL; p = p->next) {
        EAttachment *attachment;
        
        attachment = E_ATTACHMENT (p->data);
        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 (bar != NULL, 0);
    g_return_val_if_fail (E_IS_ATTACHMENT_BAR (bar), 0);
    
    return bar->priv->num_attachments;
}


void
e_attachment_bar_attach (EAttachmentBar *bar,
             const gchar *file_name,
             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 (bar != NULL);
    g_return_if_fail (E_IS_ATTACHMENT_BAR (bar));
    
    add_common (bar, attachment);
}

int 
e_attachment_bar_get_download_count (EAttachmentBar *bar)
{
    EAttachmentBarPrivate *priv;
    GList *p;
    int count=0;
    
    g_return_val_if_fail (bar != NULL, 0);
    g_return_val_if_fail (E_IS_ATTACHMENT_BAR (bar), 0);
    
    priv = bar->priv;
    
    for (p = priv->attachments; p != NULL; p = p->next) {
        EAttachment *attachment;
        
        attachment = p->data;
        if (!attachment->is_available_local)
            count++;
    }

    return count;
}

void 
e_attachment_bar_attach_remote_file (EAttachmentBar *bar,
                     const gchar *url)
{
    EAttachment *attachment;
    CamelException ex;

    g_return_if_fail ( bar!=NULL );
    g_return_if_fail (E_IS_ATTACHMENT_BAR (bar));

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

    camel_exception_init (&ex);
    attachment = e_attachment_new_remote_file (url, "attachment", bar->priv->path, &ex);
    g_signal_connect (attachment, "update", G_CALLBACK(update_remote_file), bar);
    if (attachment) {
        add_common (bar, attachment);
    } 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 ( bar!=NULL );
    g_return_if_fail (E_IS_ATTACHMENT_BAR (bar));
    
    add_from_mime_part (bar, part);
}