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|
/* -*- 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 <gnome.h>
#include "e-util/e-util.h"
#include "mail-display.h"
#include "html-stream.h"
#include "camel/camel-formatter.h"
/* corba/bonobo stuff */
#include <bonobo.h>
#include <libgnorba/gnorba.h>
#include <bonobo/bonobo-stream-memory.h>
#define PARENT_TYPE (gtk_table_get_type ())
static GtkObjectClass *mail_display_parent_class;
static gchar default_header_html_string[] = "\n\
<!doctype html public \"-//w3c//dtd html 4.0 transitional//en\">\n\
<html>\n\
<head>\n\
<meta name=\"GENERATOR\" content=\"Evolution Mail Component (Rhon Rhon release)\">\n\
</head>\n\
<body text=\"#000000\" bgcolor=\"#999999\">\n\
<table CELLSPACING=0 WIDTH=\"100\%\">\n\
<tr>\n\
<td><b>From: </b></td>\n\
<td><b>To: </b></td>\n\
</tr>\n\
\n\
<tr>\n\
<td><b>Subject: </b></td>\n\
<td><b>Cc: </b></td>\n\
</tr>\n\
</table>\n\
</body>\n\
</html>\n\
";
static gchar default_body_html_string[] = "\n\
<!doctype html public \"-//w3c//dtd html 4.0 transitional//en\">\n\
<html>\n\
<head>\n\
<meta name=\"GENERATOR\" content=\"Evolution Mail Component (Rhon Rhon release)\">\n\
</head>\n\
<body text=\"#000000\" bgcolor=\"#FFFFFF\">\n\
<center>\n\
Nothing to display in this view\n\
</center>\n\
</body>\n\
</html>\n\
";
/*----------------------------------------------------------------------*
* Helper utility functions
*----------------------------------------------------------------------*/
/* stuff to display Bonobo Components inside the html message
* body view */
static gboolean
hydrate_persist_stream_from_gstring (Bonobo_PersistStream persist_stream,
GString* gstr)
{
CORBA_Environment ev;
BonoboStream* mem_stream =
bonobo_stream_mem_create (gstr->str, gstr->len, TRUE);
CORBA_Object mem_stream_corba =
bonobo_object_corba_objref (BONOBO_OBJECT (mem_stream));
g_assert (persist_stream != CORBA_OBJECT_NIL);
CORBA_exception_init (&ev);
/*
* Load the file into the component using PersistStream.
*/
Bonobo_PersistStream_load (persist_stream, mem_stream_corba, &ev);
bonobo_object_unref (BONOBO_OBJECT (mem_stream));
if (ev._major != CORBA_NO_EXCEPTION) {
gnome_warning_dialog (_("An exception occured while trying "
"to load data into the component with "
"PersistStream"));
CORBA_exception_free (&ev);
return FALSE;
}
CORBA_exception_free (&ev);
return TRUE;
}
static GString*
camel_stream_to_gstring (CamelStream* stream)
{
gchar tmp_buffer[4097];
GString *tmp_gstring = g_string_new ("");
do { /* read next chunk of text */
gint nb_bytes_read;
nb_bytes_read = camel_stream_read (stream,
tmp_buffer,
4096);
tmp_buffer [nb_bytes_read] = '\0';
/* If there's any text, append it to the gstring */
if (nb_bytes_read > 0) {
tmp_gstring = g_string_append (tmp_gstring, tmp_buffer);
}
} while (!camel_stream_eos (stream));
return tmp_gstring;
}
/*----------------------------------------------------------------------*
* Callbacks
*----------------------------------------------------------------------*/
static void
embeddable_destroy_cb (GtkObject *obj, gpointer user_data)
{
BonoboWidget *be; /* bonobo embeddable */
BonoboViewFrame *vf; /* the embeddable view frame */
BonoboObjectClient* server;
CORBA_Environment ev;
printf ("in the bonobo embeddable destroy callback\n");
be = BONOBO_WIDGET (obj);
server = bonobo_widget_get_server (be);
vf = bonobo_widget_get_view_frame (be);
bonobo_control_frame_control_deactivate (
BONOBO_CONTROL_FRAME (vf));
/* w = bonobo_control_frame_get_widget (BONOBO_CONTROL_FRAME (vf)); */
/* gtk_widget_destroy (w); */
CORBA_exception_init (&ev);
Bonobo_Unknown_unref (
bonobo_object_corba_objref (BONOBO_OBJECT(server)), &ev);
CORBA_Object_release (
bonobo_object_corba_objref (BONOBO_OBJECT(server)), &ev);
CORBA_exception_free (&ev);
bonobo_object_destroy (BONOBO_OBJECT (vf));
/* gtk_object_unref (obj); */
}
/*
* As a page is loaded, when gtkhtml comes across <object> tags, this
* callback is invoked. The GtkHTMLEmbedded param is a GtkContainer;
* our job in this function is to simply add a child widget to it.
*/
static void
on_object_requested (GtkHTML *html, GtkHTMLEmbedded *eb, void *unused)
{
CamelStream *stream;
GString *camel_stream_gstr;
GtkWidget *bonobo_embeddable;
BonoboObjectClient* server;
Bonobo_PersistStream persist;
CORBA_Environment ev;
gchar *uid = gtk_html_embedded_get_parameter (eb, "uid");
/* Both the classid (which specifies which bonobo object to
* fire up) and the uid (which tells us where to find data to
* persist from) must be available; if one of them isn't,
* print an error and bail. */
if (!uid || !eb->classid) {
printf ("on_object_requested: couldn't find %s%s%s\n",
uid?"a uid":"",
(!uid && !eb->classid)?" or ":"",
eb->classid?"a classid":"");
return;
}
printf ("object requested : %s\n", eb->classid);
printf ("UID = %s\n", uid);
/* Try to get a server with goadid specified by eb->classid */
bonobo_embeddable = bonobo_widget_new_subdoc (eb->classid, NULL);
gtk_signal_connect (GTK_OBJECT (bonobo_embeddable),
"destroy", embeddable_destroy_cb, NULL);
server = bonobo_widget_get_server (BONOBO_WIDGET (bonobo_embeddable));
if (!server) {
printf ("Couldn't get the server for the bonobo embeddable\n");
return;
}
/* The UID should be a pointer to a CamelStream */
if (sscanf (uid, "camel://%p", &stream) != 1) {
printf ("Couldn't get a pointer from url \"%s\"\n", uid);
gtk_object_unref (GTK_OBJECT (bonobo_embeddable));
return;
}
/* Try to get a PersistStream interface from the server;
if it doesn't support that interface, bail. */
persist = (Bonobo_PersistStream) bonobo_object_client_query_interface (
server,
"IDL:Bonobo/PersistStream:1.0",
NULL);
if (persist == CORBA_OBJECT_NIL) {
gchar* msg = g_strdup_printf (
_("The %s component doesn't support PersistStream!\n"),
uid);
gnome_warning_dialog (msg);
gtk_object_unref (GTK_OBJECT (bonobo_embeddable));
g_free (msg);
return;
}
/* Hydrate the PersistStream from the CamelStream */
camel_stream_gstr = camel_stream_to_gstring (stream);
printf ("on_object_requested: The CamelStream has %d elements\n",
camel_stream_gstr->len);
hydrate_persist_stream_from_gstring (persist, camel_stream_gstr);
/* Give our new window to the container */
gtk_widget_show (bonobo_embeddable);
gtk_container_add (GTK_CONTAINER(eb), bonobo_embeddable);
/* Destroy the PersistStream object.*/
CORBA_exception_init (&ev);
Bonobo_Unknown_unref (persist, &ev);
CORBA_Object_release (persist, &ev);
CORBA_exception_free (&ev);
g_string_free (camel_stream_gstr, FALSE);
}
/**
* 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)
{
CamelFormatter *camel_formatter;
/* okay, we should not create a formatter
* each time we need to display a message
* but I don't know how the formatter reacts
* to consecutive call to *_to_html - ber */
camel_formatter = camel_formatter_new ();
/*
* 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)) {
/* we were given a reference to the message in the last call
* to mail_display_set_message, free it now. */
if (mail_display->current_message)
gtk_object_unref (GTK_OBJECT (mail_display->current_message));
mail_display->current_message = CAMEL_MIME_MESSAGE (medium);
/*
* reset the html stream to clean
* the gtkhtml widget
*/
camel_stream_reset (mail_display->body_stream);
camel_stream_reset (mail_display->headers_stream);
/*
* convert the message into html
* and stream the result to the gtkhtml
* widgets
*/
camel_stream_write_string (mail_display->headers_stream, "\n\
<!doctype html public \"-//w3c//dtd html 4.0 transitional//en\">\n\
<html>\n\
<head>\n\
<meta name=\"GENERATOR\" content=\"Evolution Mail Component (Rhon Rhon release)\">\n\
</head>\n\
<body text=\"#000000\" bgcolor=\"#999999\">\n\
<font>\n\
");;
camel_stream_write_string (mail_display->body_stream, "\n\
<!doctype html public \"-//w3c//dtd html 4.0 transitional//en\">\n\
<html>\n\
<head>\n\
<meta name=\"GENERATOR\" content=\"Evolution Mail Component (Rhon Rhon release)\">\n\
</head>\n\
<body text=\"#000000\" bgcolor=\"#FFFFFF\">\n\
");;
camel_formatter_mime_message_to_html
(camel_formatter,
CAMEL_MIME_MESSAGE (medium),
mail_display->headers_stream,
mail_display->body_stream);
gtk_object_unref (GTK_OBJECT (camel_formatter));
camel_stream_write_string (mail_display->headers_stream, "\n\
</font>\n\
</body>\n\
</html>\n\
");;
camel_stream_write_string (mail_display->body_stream, "\n\
</body>\n\
</html>\n\
");;
camel_stream_close (mail_display->body_stream);
camel_stream_close (mail_display->headers_stream);
}
}
/*----------------------------------------------------------------------*
* Standard Gtk+ Class functions
*----------------------------------------------------------------------*/
static void
mail_display_init (GtkObject *object)
{
MailDisplay *mail_display = MAIL_DISPLAY (object);
/* create the headers html widget */
mail_display->headers_html_widget = (GtkHTML *) gtk_html_new ();
mail_display->headers_stream = html_stream_new (mail_display->headers_html_widget);
gtk_widget_show (GTK_WIDGET (mail_display->headers_html_widget));
/* create the body html widget */
mail_display->body_html_widget = (GtkHTML *) gtk_html_new ();
gtk_signal_connect (GTK_OBJECT (mail_display->body_html_widget),
"object_requested",
GTK_SIGNAL_FUNC (on_object_requested),
NULL);
mail_display->body_stream = html_stream_new (mail_display->body_html_widget);
gtk_widget_show (GTK_WIDGET (mail_display->body_html_widget));
/* 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 ());
GtkTable *table = GTK_TABLE (mail_display);
GtkWidget *scroll_wnd;
GtkWidget* frame_wnd = NULL;
g_assert (parent_folder_browser);
mail_display->parent_folder_browser = parent_folder_browser;
/* the table has table with 1 column and 2 lines */
table->homogeneous = FALSE;
gtk_table_resize (table, 1, 2);
gtk_widget_show (GTK_WIDGET (mail_display));
/* create a scrolled window and put the headers
* html widget inside */
scroll_wnd = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scroll_wnd),
GTK_POLICY_AUTOMATIC,
GTK_POLICY_NEVER);
frame_wnd = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (
GTK_FRAME (frame_wnd), GTK_SHADOW_OUT);
gtk_widget_show (scroll_wnd);
gtk_container_add (GTK_CONTAINER (frame_wnd), scroll_wnd);
gtk_widget_show (frame_wnd);
gtk_container_add (GTK_CONTAINER (scroll_wnd),
GTK_WIDGET (mail_display->headers_html_widget));
gtk_widget_set_usize (GTK_WIDGET (scroll_wnd), -1, 50);
/* add it on the top part of the table */
gtk_table_attach (table, GTK_WIDGET (frame_wnd),
0, 1, 0, 1,
GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0);
/* create a scrolled window and put the body
* html widget inside */
scroll_wnd = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scroll_wnd),
GTK_POLICY_AUTOMATIC,
GTK_POLICY_ALWAYS);
gtk_widget_show (scroll_wnd);
gtk_container_add (GTK_CONTAINER (scroll_wnd),
GTK_WIDGET (mail_display->body_html_widget));
/* add it at the bottom part of the table */
gtk_table_attach (table, GTK_WIDGET (scroll_wnd),
0, 1, 1, 2,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
/* write the default text to the html widgets */
camel_stream_write_string (mail_display->headers_stream, default_header_html_string);
camel_stream_write_string (mail_display->body_stream, default_body_html_string);
return GTK_WIDGET (mail_display);
}
E_MAKE_TYPE (mail_display, "MailDisplay", MailDisplay, mail_display_class_init, mail_display_init, PARENT_TYPE);
|
