path: root/mail/mail-display.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * mail-display.c: Mail display widget
 *
 * Author:
 *   Miguel de Icaza
 *   Bertrand Guiheneuf (bg@aful.org)
 *
 * (C) 2000 Helix Code, Inc.
 */
#include <config.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <gnome.h>
#include "e-util/e-setup.h"
#include "e-util/e-util.h"
#include "mail-display.h"
#include "mail.h"

#define PARENT_TYPE (gtk_vbox_get_type ())

static GtkObjectClass *mail_display_parent_class;


/*----------------------------------------------------------------------*
 *                        Callbacks
 *----------------------------------------------------------------------*/

static void
save_data_eexist_cb (int reply, gpointer user_data)
{
    gboolean *ok = user_data;

    *ok = reply == 0;
    gtk_main_quit ();
}

static void
save_data_cb (GtkWidget *widget, gpointer user_data)
{
    CamelStream *output = CAMEL_STREAM (user_data);
    GtkFileSelection *file_select = (GtkFileSelection *)
        gtk_widget_get_ancestor (widget, GTK_TYPE_FILE_SELECTION);
    char *name, buf[1024];
    int fd, nread;
    CamelException *ex;

    name = gtk_file_selection_get_filename (file_select);

    fd = open (name, O_WRONLY | O_CREAT | O_EXCL, S_IRUSR | S_IWUSR);
    if (fd == -1 && errno == EEXIST) {
        gboolean ok = FALSE;

        gnome_ok_cancel_dialog_modal_parented (
            "A file by that name already exists.\nOverwrite it?",
            save_data_eexist_cb, &ok, GTK_WINDOW (file_select));
        gtk_main ();
        if (!ok)
            return;
        fd = open (name, O_WRONLY | O_TRUNC);
    }

    if (fd == -1) {
        char *msg;

        msg = g_strdup_printf ("Could not open file %s:\n%s",
                       name, g_strerror (errno));
        gnome_error_dialog_parented (msg, GTK_WINDOW (file_select));
        return;
    }

    ex = camel_exception_new ();
    camel_stream_reset (output, ex);
    while (!camel_exception_is_set (ex) && !camel_stream_eos (output)) {
        nread = camel_stream_read (output, buf, sizeof (buf), ex);
        if (nread > 0)
            write (fd, buf, nread);
    }
    close (fd);

    if (camel_exception_is_set (ex)) {
        char *msg;

        msg = g_strdup_printf ("Could not write data: %s",
                       camel_exception_get_description (ex));
        gnome_error_dialog_parented (msg, GTK_WINDOW (file_select));
    }
    camel_exception_free (ex);

    gtk_widget_destroy (GTK_WIDGET (file_select));
}

static void
save_data (const char *cid, CamelMimeMessage *message)
{
    CamelDataWrapper *data;
    CamelStream *output;
    GtkFileSelection *file_select;
    char *filename;

    g_return_if_fail (CAMEL_IS_MIME_MESSAGE (message));
    data = gtk_object_get_data (GTK_OBJECT (message), cid);
    g_return_if_fail (CAMEL_IS_DATA_WRAPPER (data));
    output = camel_data_wrapper_get_output_stream (data);
    g_return_if_fail (CAMEL_IS_STREAM (output));

    file_select = GTK_FILE_SELECTION (gtk_file_selection_new ("Save Attachment"));
    filename = gtk_object_get_data (GTK_OBJECT (data), "filename");
    if (filename)
        filename = g_strdup_printf ("%s/%s", evolution_dir, filename);
    else
        filename = g_strdup_printf ("%s/attachment", evolution_dir);
    gtk_file_selection_set_filename (file_select, filename);
    g_free (filename);

    gtk_signal_connect (GTK_OBJECT (file_select->ok_button), "clicked", 
                GTK_SIGNAL_FUNC (save_data_cb), output);
    gtk_signal_connect_object (GTK_OBJECT (file_select->cancel_button),
                   "clicked",
                   GTK_SIGNAL_FUNC (gtk_widget_destroy),
                   GTK_OBJECT (file_select));

    gtk_widget_show (GTK_WIDGET (file_select));
}

static void
on_link_clicked (GtkHTML *html, const char *url, gpointer user_data)
{
    if (!strncasecmp (url, "news:", 5) ||
        !strncasecmp (url, "nntp:", 5))
        g_warning ("Can't handle news URLs yet.");
    else if (!strncasecmp (url, "mailto:", 7))
        send_to_url (url);
    else if (!strncasecmp (url, "cid:", 4))
        save_data (url + 4, user_data);
    else
        gnome_url_show (url);
}

static void
on_url_requested (GtkHTML *html, const char *url, GtkHTMLStreamHandle handle,
          gpointer user_data)
{
    char buf[1024];
    int nread;
    CamelMimeMessage *message = CAMEL_MIME_MESSAGE (user_data);

    if (strncmp (url, "x-gnome-icon:", 13) == 0) {
        const char *name = url + 13;
        /* FIXME: gnome_pixmap_file will cheerily accept icon
         * names like "../../../dev/zero". Anyway, this whole
         * hack needs to be replaced with something more
         * efficient anyway.
         */
        char *path = gnome_pixmap_file (name);
        int fd;

        g_return_if_fail (path != NULL);
        fd = open (path, O_RDONLY);
        g_free (path);
        g_return_if_fail (fd != -1);

        while (1) {
            nread = read (fd, buf, sizeof (buf));
            if (nread < 1)
                break;
            gtk_html_write (html, handle, buf, nread);
        }
        close (fd);
    } else if (strncmp (url, "cid:", 4) == 0) {
        const char *cid = url + 4;
        CamelDataWrapper *data;
        CamelStream *output;

        data = gtk_object_get_data (GTK_OBJECT (message), cid);
        g_return_if_fail (CAMEL_IS_DATA_WRAPPER (data));

        output = camel_data_wrapper_get_output_stream (data);
        g_return_if_fail (CAMEL_IS_STREAM (output));

        camel_stream_reset (output, NULL);
        do {
            nread = camel_stream_read (output, buf,
                           sizeof (buf), NULL);
            if (nread > 0)
                gtk_html_write (html, handle, buf, nread);
        } while (!camel_stream_eos (output));
    } else
        return;
}

/* HTML part code */
static void
html_size_req (GtkWidget *widget, GtkRequisition *requisition)
{
    requisition->height = GTK_LAYOUT (widget)->height;
    requisition->width = GTK_LAYOUT (widget)->width;
}

void
mail_html_new (GtkHTML **html, GtkHTMLStreamHandle **stream,
           CamelMimeMessage *root, gboolean init)
{
    *html = GTK_HTML (gtk_html_new ());
    gtk_html_set_editable (*html, FALSE);
    gtk_signal_connect (GTK_OBJECT (*html), "size_request",
                GTK_SIGNAL_FUNC (html_size_req), NULL);
    gtk_signal_connect (GTK_OBJECT (*html), "url_requested",
                GTK_SIGNAL_FUNC (on_url_requested), root);
    gtk_signal_connect (GTK_OBJECT (*html), "link_clicked",
                GTK_SIGNAL_FUNC (on_link_clicked), root);

    *stream = gtk_html_begin (*html, "");
    if (init) {
        mail_html_write (*html, *stream, HTML_HEADER
                 "<BODY TEXT=\"#000000\" "
                 "BGCOLOR=\"#FFFFFF\">\n");
    }
}

void
mail_html_write (GtkHTML *html, GtkHTMLStreamHandle *stream,
         const char *format, ...)
{
    char *buf;
    va_list ap;

    va_start (ap, format);
    buf = g_strdup_vprintf (format, ap);
    va_end (ap);
    gtk_html_write (html, stream, buf, strlen (buf));
    g_free (buf);
}

void
mail_html_end (GtkHTML *html, GtkHTMLStreamHandle *stream,
           gboolean finish, GtkBox *box)
{
    GtkWidget *scroll;

    scroll = gtk_scrolled_window_new (NULL, NULL);
    gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scroll),
                    GTK_POLICY_NEVER,
                    GTK_POLICY_NEVER);
    gtk_container_add (GTK_CONTAINER (scroll), GTK_WIDGET (html));

    if (finish)
        mail_html_write (html, stream, "</BODY></HTML>\n");
    gtk_html_end (html, stream, GTK_HTML_STREAM_OK);

    gtk_box_pack_start (box, scroll, FALSE, TRUE, 0);
    gtk_widget_show (GTK_WIDGET (html));
    gtk_widget_show (scroll);
}




/**
 * mail_display_set_message:
 * @mail_display: the mail display object
 * @mime_message: the input camel medium
 *
 * Makes the mail_display object show the contents of the medium
 * param. This means feeding mail_display->body_stream and
 * mail_display->headers_stream with html.
 *
 **/
void 
mail_display_set_message (MailDisplay *mail_display, 
              CamelMedium *medium)
{
    GtkAdjustment *adj;

    /*
     * for the moment, camel-formatter deals only with 
     * mime messages, but in the future, it should be 
     * able to deal with any medium.
     * It can work on pretty much data wrapper, but in 
     * fact, only the medium class has the distinction 
     * header / body 
     */
    if (!CAMEL_IS_MIME_MESSAGE (medium))
        return;

    /* Clean up from previous message. */
    if (mail_display->current_message) {
        GtkContainer *container =
            GTK_CONTAINER (mail_display->inner_box);
        GList *htmls;

        htmls = gtk_container_children (container);
        while (htmls) {
            gtk_container_remove (container, htmls->data);
            htmls = htmls->next;
        }

        gtk_object_unref (GTK_OBJECT (mail_display->current_message));
    }

    mail_display->current_message = CAMEL_MIME_MESSAGE (medium);
    gtk_object_ref (GTK_OBJECT (medium));

    mail_format_mime_message (CAMEL_MIME_MESSAGE (medium),
                  mail_display->inner_box);

    adj = gtk_scrolled_window_get_vadjustment (mail_display->scroll);
    gtk_adjustment_set_value (adj, 0);
    gtk_scrolled_window_set_vadjustment (mail_display->scroll, adj);

    adj = gtk_scrolled_window_get_hadjustment (mail_display->scroll);
    gtk_adjustment_set_value (adj, 0);
    gtk_scrolled_window_set_hadjustment (mail_display->scroll, adj);
}


/*----------------------------------------------------------------------*
 *                     Standard Gtk+ Class functions
 *----------------------------------------------------------------------*/

static void
mail_display_init (GtkObject *object)
{
    MailDisplay *mail_display = MAIL_DISPLAY (object);

    /* various other initializations */
    mail_display->current_message = NULL;
}

static void
mail_display_destroy (GtkObject *object)
{
    /* MailDisplay *mail_display = MAIL_DISPLAY (object); */

    mail_display_parent_class->destroy (object);
}

static void
mail_display_class_init (GtkObjectClass *object_class)
{
    object_class->destroy = mail_display_destroy;
    mail_display_parent_class = gtk_type_class (PARENT_TYPE);
}

GtkWidget *
mail_display_new (FolderBrowser *parent_folder_browser)
{
    MailDisplay *mail_display = gtk_type_new (mail_display_get_type ());
    GtkWidget *scroll, *vbox;

    g_assert (parent_folder_browser);

    mail_display->parent_folder_browser = parent_folder_browser;

    gtk_box_set_homogeneous (GTK_BOX (mail_display), FALSE);
    gtk_widget_show (GTK_WIDGET (mail_display));

    /* For now, the box only contains a single scrolled window,
     * which in turn contains a vbox itself.
     */
    scroll = gtk_scrolled_window_new (NULL, NULL);
    gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scroll),
                    GTK_POLICY_AUTOMATIC,
                    GTK_POLICY_ALWAYS);
    gtk_box_pack_start_defaults (GTK_BOX (mail_display),
                     GTK_WIDGET (scroll));
    gtk_widget_show (GTK_WIDGET (scroll));

    vbox = gtk_vbox_new (FALSE, 2);
    gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (scroll),
                           vbox);
    gtk_widget_show (GTK_WIDGET (vbox));

    mail_display->scroll = GTK_SCROLLED_WINDOW (scroll);
    mail_display->inner_box = GTK_BOX (vbox);

    return GTK_WIDGET (mail_display);
}



E_MAKE_TYPE (mail_display, "MailDisplay", MailDisplay, mail_display_class_init, mail_display_init, PARENT_TYPE);