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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Authors: Jeffrey Stedfast <fejj@ximian.com>
 *
 *  Copyright 2001 Ximian, Inc. (www.ximian.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * 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 Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 */

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

#include <gal/util/e-util.h>
#include <gal/widgets/e-unicode.h>

#include <bonobo/bonobo-exception.h>
#include <bonobo/bonobo-ui-component.h>
#include <bonobo/bonobo-ui-container.h>
#include <bonobo/bonobo-ui-util.h>

#include "message-browser.h"

#include "mail.h"
#include "mail-callbacks.h"
#include "mail-tools.h"
#include "message-list.h"
#include "mail-ops.h"
#include "mail-vfolder.h"
#include "mail-autofilter.h"
#include "mail-mt.h"

#include "mail-local.h"
#include "mail-config.h"

#include "folder-browser-ui.h"

#define d(x) 

#define MINIMUM_WIDTH  600
#define MINIMUM_HEIGHT 400

#define PARENT_TYPE BONOBO_TYPE_WINDOW

/* Size of the window last time it was changed.  */
static GtkAllocation last_allocation = { 0, 0 };

static BonoboWindowClass *message_browser_parent_class;

static void
message_browser_finalise (GObject *object)
{
    MessageBrowser *message_browser;
    
    message_browser = MESSAGE_BROWSER (object);

    g_signal_handlers_disconnect_matched(message_browser->fb, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, message_browser);
    g_object_unref((message_browser->fb));
    
    if (G_OBJECT_CLASS (message_browser_parent_class)->finalize)
        (G_OBJECT_CLASS (message_browser_parent_class)->finalize) (object);
}

static void
message_browser_class_init (GObjectClass *object_class)
{
    object_class->finalize = message_browser_finalise;
    
    message_browser_parent_class = g_type_class_ref(PARENT_TYPE);
}

static void
message_browser_init (GtkObject *object)
{
    
}

static void
transfer_msg_done (gboolean ok, void *data)
{
    MessageBrowser *mb = data;
    int row;
    
#warning "GTK_OBJECT_DESTROYED"
    /*if (ok && !GTK_OBJECT_DESTROYED (mb)) {*/
    if (ok) {
        row = e_tree_row_of_node (mb->fb->message_list->tree,
                      e_tree_get_cursor (mb->fb->message_list->tree));
        
        /* If this is the last message and deleted messages
                   are hidden, select the previous */
        if ((row + 1 == e_tree_row_count (mb->fb->message_list->tree))
            && mail_config_get_hide_deleted ())
            message_list_select (mb->fb->message_list, MESSAGE_LIST_SELECT_PREVIOUS,
                         0, CAMEL_MESSAGE_DELETED, FALSE);
        else
            message_list_select (mb->fb->message_list, MESSAGE_LIST_SELECT_NEXT,
                         0, 0, FALSE);
    }
    
    g_object_unref((mb));
}

static void
transfer_msg (MessageBrowser *mb, int del)
{
    const char *allowed_types[] = { "mail/*", "vtrash", NULL };
    extern EvolutionShellClient *global_shell_client;
    GNOME_Evolution_Folder *folder;
    static char *last_uri = NULL;
    GPtrArray *uids;
    char *desc;

/*  if (GTK_OBJECT_DESTROYED(mb))
    return;*/
    
    if (last_uri == NULL)
        last_uri = g_strdup ("");
    
    if (del)
        desc = _("Move message(s) to");
    else
        desc = _("Copy message(s) to");
    
    evolution_shell_client_user_select_folder (global_shell_client,
                           GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (mb))),
                           desc, last_uri, allowed_types, &folder);
    if (!folder)
        return;
    
    if (strcmp (last_uri, folder->evolutionUri) != 0) {
        g_free (last_uri);
        last_uri = g_strdup (folder->evolutionUri);
    }
    
    uids = g_ptr_array_new ();
    message_list_foreach (mb->fb->message_list, enumerate_msg, uids);
    
    if (del) {
        g_object_ref((mb));
        mail_transfer_messages (mb->fb->folder, uids, del,
                    folder->physicalUri, 0, transfer_msg_done, mb);
    } else {
        mail_transfer_messages (mb->fb->folder, uids, del,
                    folder->physicalUri, 0, NULL, NULL);
    }
    
    CORBA_free (folder);
}


/* UI callbacks */

static void
message_browser_close (BonoboUIComponent *uih, void *user_data, const char *path)
{
    gtk_widget_destroy (GTK_WIDGET (user_data));
}

static void
message_browser_move (BonoboUIComponent *uih, void *user_data, const char *path)
{
    transfer_msg(user_data, TRUE);
}

static void
message_browser_copy (BonoboUIComponent *uih, void *user_data, const char *path)
{
    transfer_msg(user_data, FALSE);
}

static BonoboUIVerb 
browser_verbs [] = {
    BONOBO_UI_UNSAFE_VERB ("MessageBrowserClose", message_browser_close),
    BONOBO_UI_UNSAFE_VERB ("MessageMove", message_browser_move),
    BONOBO_UI_UNSAFE_VERB ("MessageCopy", message_browser_copy),
    BONOBO_UI_VERB_END
};

/* FB message loading hookups */

static void
message_browser_message_loaded (FolderBrowser *fb, const char *uid, MessageBrowser *mb)
{
    CamelMimeMessage *message;
    char *subject = NULL;
    char *title;
    
    folder_browser_ui_message_loaded(fb);
    
    message = fb->mail_display->current_message;
    
    if (message)
        subject = (char *) camel_mime_message_get_subject (message);
    
    if (subject == NULL)
        subject = _("(No subject)");
    
    title = g_strdup_printf (_("%s - Message"), subject);
    
    gtk_window_set_title (GTK_WINDOW (mb), title);
    
    g_free (title);
}

static void
message_browser_message_list_built (MessageList *ml, MessageBrowser *mb)
{
    const char *uid = gtk_object_get_data (GTK_OBJECT (mb), "uid");

    g_signal_handlers_disconnect_matched(mb->fb, G_SIGNAL_MATCH_DATA|G_SIGNAL_MATCH_FUNC, 0, 0, NULL,
                         message_browser_message_list_built, mb);
    message_list_select_uid (ml, uid);
}

static void
message_browser_folder_loaded (FolderBrowser *fb, const char *uri, MessageBrowser *mb)
{
    g_signal_connect(fb->message_list, "message_list_built",
             G_CALLBACK(message_browser_message_list_built), mb);
}

static void
message_browser_size_allocate_cb (GtkWidget *widget,
                  GtkAllocation *allocation)
{
    last_allocation = *allocation;
}

/* Construction */

static void
set_default_size (GtkWidget *widget)
{
    int width, height;
    
    width  = MAX (MINIMUM_WIDTH, last_allocation.width);
    height = MAX (MINIMUM_HEIGHT, last_allocation.height);
    
    gtk_window_set_default_size (GTK_WINDOW (widget), width, height);
}

static void 
set_bonobo_ui (GtkWidget *widget, FolderBrowser *fb)
{
    BonoboUIContainer *uicont;
    BonoboUIComponent *uic;
    CORBA_Environment ev;

    uicont = bonobo_window_get_ui_container(BONOBO_WINDOW(widget));

    uic = bonobo_ui_component_new_default ();
    bonobo_ui_component_set_container (uic, BONOBO_OBJREF (uicont), NULL);
    folder_browser_set_ui_component (fb, uic);

    /* Load our UI */

    /*bonobo_ui_component_freeze (uic, NULL);*/
    bonobo_ui_util_set_ui (uic, EVOLUTION_DATADIR, "evolution-mail-messagedisplay.xml", "evolution-mail", NULL);

    /* Load the appropriate UI stuff from the folder browser */

    folder_browser_ui_add_message (fb);

    /* We just opened the message! We don't need to open it again. */

    CORBA_exception_init (&ev);
    /* remove the broken menus and toolbar items */
    bonobo_ui_component_rm (uic, "/menu/File/FileOps/MessageOpen", &ev);
    bonobo_ui_component_rm (uic, "/menu/Actions/ComponentActionsPlaceholder/MailMessageActions/GoTo", &ev);
    bonobo_ui_component_rm (uic, "/menu/Tools", &ev);
    bonobo_ui_component_rm (uic, "/Toolbar/MailNextButtons", &ev);
    CORBA_exception_free (&ev);

    /* Hack around the move/copy commands api's */
    bonobo_ui_component_remove_listener (uic, "MessageCopy");
    bonobo_ui_component_remove_listener (uic, "MessageMove");

    /* Add the Close & Move/Copy items */

    bonobo_ui_component_add_verb_list_with_data (uic, browser_verbs, widget);

    /* Done */

    /*bonobo_ui_component_thaw (uic, NULL);*/
}

GtkWidget *
message_browser_new (const GNOME_Evolution_Shell shell, const char *uri, const char *uid)
{
    GtkWidget *vbox;
    MessageBrowser *new;
    FolderBrowser *fb;
    
    new = g_object_new (MESSAGE_BROWSER_TYPE,
                "title", "Ximian Evolution", NULL);
    if (!new) {
        g_warning ("Failed to construct Bonobo window!");
        return NULL;
    }
    
    g_object_set_data_full(G_OBJECT(new), "uid", g_strdup (uid), g_free);
    
    fb = FOLDER_BROWSER (folder_browser_new (shell, uri));
    new->fb = fb;
    
    set_bonobo_ui (GTK_WIDGET (new), fb);
    
    /* some evil hackery action... */
    vbox = gtk_vbox_new (TRUE, 0);
    gtk_widget_ref (GTK_WIDGET (fb->mail_display));
    gtk_widget_reparent (GTK_WIDGET (fb->mail_display), vbox);
    /* Note: normally we'd unref the fb->mail_display now, except
           that if we do then our refcounts will not be in
           harmony... both the fb *and* the message-browser need to
           own a ref on the mail_display. */
    gtk_widget_show (GTK_WIDGET (fb->mail_display));
    gtk_widget_show (vbox);
    
    g_signal_connect(new, "size_allocate", 
             G_CALLBACK (message_browser_size_allocate_cb), NULL);
    
    bonobo_window_set_contents (BONOBO_WINDOW (new), vbox);
    gtk_widget_grab_focus (GTK_WIDGET (MAIL_DISPLAY (fb->mail_display)->html));
    
    set_default_size (GTK_WIDGET (new));
    
    /* more evil hackery... */
    g_signal_connect(fb, "folder_loaded", G_CALLBACK(message_browser_folder_loaded), new);
    g_signal_connect(fb, "message_loaded", G_CALLBACK(message_browser_message_loaded), new);
    
    return GTK_WIDGET (new);
}

/* Fin */

E_MAKE_TYPE (message_browser, "MessageBrowser", MessageBrowser, message_browser_class_init,
         message_browser_init, PARENT_TYPE);