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/*
 * e-shell-module.h
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>  
 *
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

/**
 * SECTION: e-shell-module
 * @short_description: dynamically loaded capabilities
 * @include: shell/e-shell-module.h
 **/

#ifndef E_SHELL_MODULE_H
#define E_SHELL_MODULE_H

#include <shell/e-shell-common.h>
#include <widgets/misc/e-activity.h>

/* Standard GObject macros */
#define E_TYPE_SHELL_MODULE \
    (e_shell_module_get_type ())
#define E_SHELL_MODULE(obj) \
    (G_TYPE_CHECK_INSTANCE_CAST \
    ((obj), E_TYPE_SHELL_MODULE, EShellModule))
#define E_SHELL_MODULE_CLASS(cls) \
    (G_TYPE_CHECK_CLASS_CAST \
    ((cls), E_TYPE_SHELL_MODULE, EShellModuleClass))
#define E_IS_SHELL_MODULE(obj) \
    (G_TYPE_CHECK_INSTANCE_TYPE \
    ((obj), E_TYPE_SHELL_MODULE))
#define E_IS_SHELL_MODULE_CLASS(cls) \
    (G_TYPE_CHECK_CLASS_TYPE \
    ((cls), E_TYPE_SHELL_MODULE))
#define E_SHELL_MODULE_GET_CLASS(obj) \
    (G_TYPE_INSTANCE_GET_CLASS \
    ((obj), E_TYPE_SHELL_MODULE, EShellModuleClass))

G_BEGIN_DECLS

/* Avoid including <e-shell.h>, because it includes us! */
struct _EShell;

typedef struct _EShellModule EShellModule;
typedef struct _EShellModuleInfo EShellModuleInfo;
typedef struct _EShellModuleClass EShellModuleClass;
typedef struct _EShellModulePrivate EShellModulePrivate;

/**
 * EShellModuleInfo:
 * @name:   The name of the module.  Also becomes the name of
 *      the corresponding #EShellView subclass that the
 *      module will register.
 * @aliases:    Colon-separated list of aliases that can be used
 *      when referring to a module by name.
 * @schemes:    Colon-separated list of URI schemes.  The #EShell
 *      will forward command-line URIs to the appropriate
 *      module based on this list.
 * @sort_order: Used to determine the order of modules listed in
 *      the main menu and in the switcher.  See
 *      e_shell_module_compare().
 * @is_busy:    Callback for querying whether the module has
 *      operations in progress that cannot be cancelled
 *      or finished immediately.  Returning %TRUE prevents
 *      the application from shutting down.
 * @shutdown:   Callback for notifying the module to begin
 *      shutting down.  Returning %FALSE indicates there
 *      are still unfinished operations and the #EShell
 *      should check back shortly.
 **/
struct _EShellModuleInfo {
    const gchar *name;
    const gchar *aliases;
    const gchar *schemes;
    gint sort_order;

    gboolean    (*is_busy)      (EShellModule *shell_module);
    gboolean    (*shutdown)     (EShellModule *shell_module);
};

/**
 * EShellModule:
 *
 * Contains only private data that should be read and manipulated using the
 * functions below.
 **/
struct _EShellModule {
    GTypeModule parent;
    EShellModulePrivate *priv;
};

struct _EShellModuleClass {
    GTypeModuleClass parent_class;
};

GType       e_shell_module_get_type     (void);
EShellModule *  e_shell_module_new      (struct _EShell *shell,
                         const gchar *filename);
gint        e_shell_module_compare      (EShellModule *shell_module_a,
                         EShellModule *shell_module_b);
const gchar *   e_shell_module_get_config_dir   (EShellModule *shell_module);
const gchar *   e_shell_module_get_data_dir (EShellModule *shell_module);
const gchar *   e_shell_module_get_filename (EShellModule *shell_module);
struct _EShell *e_shell_module_get_shell    (EShellModule *shell_module);
void        e_shell_module_add_activity (EShellModule *shell_module,
                         EActivity *activity);
gboolean    e_shell_module_is_busy      (EShellModule *shell_module);
gboolean    e_shell_module_shutdown     (EShellModule *shell_module);
void        e_shell_module_set_info     (EShellModule *shell_module,
                         const EShellModuleInfo *info);

G_END_DECLS

#endif /* E_SHELL_MODULE_H */