/*
 * 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/>  
 *
 *
 * Authors:
 *		Jeffrey Stedfast <fejj@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#ifndef _MESSAGE_LIST_H_
#define _MESSAGE_LIST_H_

#include <gtk/gtk.h>

#include <table/e-table-simple.h>
#include <table/e-tree-scrolled.h>

#include <camel/camel-folder.h>
#include <shell/e-shell-backend.h>

#ifdef __cplusplus
extern "C" {
#pragma }
#endif /* __cplusplus */

#define MESSAGE_LIST_TYPE        (message_list_get_type ())
#define MESSAGE_LIST(o)          (G_TYPE_CHECK_INSTANCE_CAST ((o), MESSAGE_LIST_TYPE, MessageList))
#define MESSAGE_LIST_CLASS(k)    (G_TYPE_CHECK_CLASS_CAST ((k), MESSAGE_LIST_TYPE, MessageListClass))
#define IS_MESSAGE_LIST(o)       (G_TYPE_CHECK_INSTANCE_TYPE ((o), MESSAGE_LIST_TYPE))
#define IS_MESSAGE_LIST_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), MESSAGE_LIST_TYPE))

enum {
	COL_MESSAGE_STATUS,
	COL_FLAGGED,
	COL_SCORE,
	COL_ATTACHMENT,
	COL_FROM,
	COL_SUBJECT,
	COL_SENT,
	COL_RECEIVED,
	COL_TO,
	COL_SIZE,
	COL_FOLLOWUP_FLAG_STATUS,
	COL_FOLLOWUP_FLAG,
	COL_FOLLOWUP_DUE_BY,
	COL_LOCATION,	        /* vfolder location? */
	COL_SENDER,
	COL_RECIPIENTS,
	COL_MIXED_SENDER,
	COL_MIXED_RECIPIENTS,
	COL_LABELS,

	/* subject with junk removed */
	COL_SUBJECT_TRIMMED,

	/* normalised strings */
	COL_FROM_NORM,
	COL_SUBJECT_NORM,
	COL_TO_NORM,

	COL_LAST,

	/* Invisible columns */
	COL_DELETED,
	COL_UNREAD,
	COL_COLOUR,
};

#define MESSAGE_LIST_COLUMN_IS_ACTIVE(col) (col == COL_MESSAGE_STATUS || \
					    col == COL_FLAGGED)

#define ML_HIDE_NONE_START (0)
#define ML_HIDE_NONE_END (2147483647)
/* dont change */
#define ML_HIDE_SAME (2147483646)

typedef struct _MessageList MessageList;
typedef struct _MessageListClass MessageListClass;
typedef struct _MessageListPrivate MessageListPrivate;

struct _MessageList {
	ETreeScrolled parent;

	MessageListPrivate *priv;

	/* The table */
	ETreeModel   *model;
	ETree        *tree;
	ETreePath     tree_root;
	ETableExtras *extras;

	/* The folder & matching uri */
	CamelFolder  *folder;
	char *folder_uri;

	GHashTable *uid_nodemap; /* uid (from info) -> tree node mapping */

	GHashTable *normalised_hash;

	/* UID's to hide.  Keys in the mempool */
	/* IMPORTANT: You MUST have obtained the hide lock, to operate on this data */
	GHashTable	 *hidden;
	struct _EMemPool *hidden_pool;
	int hide_unhidden;           /* total length, before hiding */
	int hide_before, hide_after; /* hide ranges of messages */

	/* Current search string, or %NULL */
	char *search;

	/* which message uid should be left in the list even not in a search after rebuild;
	   rebuild will clear the value to NULL */
	char *ensure_uid;

	/* are we regenerating the message_list because set_folder was just called? */
	guint just_set_folder : 1;

	/* Are we displaying threaded view? */
	guint threaded : 1;

	guint expand_all :1;
	guint collapse_all :1;

	/* do we automatically hide deleted messages? */
	guint hidedeleted : 1;

	/* do we automatically hide junk messages? */
	guint hidejunk : 1;

	/* frozen count */
	guint frozen:16;

	/* Where the ETree cursor is. */
	char *cursor_uid;

	/* whether the last selection was on a single row or none/multi */
	gboolean last_sel_single;

	/* Row-selection and seen-marking timers */
	guint idle_id, seen_id;

	/* locks */
	GMutex *hide_lock;	/* for any 'hide' info above */

	/* list of outstanding regeneration requests */
	GList *regen;
	GMutex *regen_lock; /* when writing to the regen, guard with this lock too */
	char *pending_select_uid; /* set if we were busy regnerating while we had a select come in */
	guint regen_timeout_id;
	void *regen_timeout_msg;

	char *frozen_search;	/* to save search took place while we were frozen */

	/* the current camel folder thread tree, if any */
	struct _CamelFolderThread *thread_tree;

	/* for message/folder chagned event handling */
	struct _MailAsyncEvent *async_event;
};

struct _MessageListClass {
	ETreeScrolledClass parent_class;

	/* signals - select a message */
	void (*message_selected) (MessageList *ml, const char *uid);
	void (*message_list_built) (MessageList *ml);
	void (*message_list_scrolled) (MessageList *ml);
};

typedef enum {
	MESSAGE_LIST_SELECT_NEXT = 0,
	MESSAGE_LIST_SELECT_PREVIOUS = 1,
	MESSAGE_LIST_SELECT_DIRECTION = 1, /* direction mask */
	MESSAGE_LIST_SELECT_WRAP = 1<<1, /* option bit */
} MessageListSelectDirection;

GType          message_list_get_type   (void);
GtkWidget     *message_list_new        (EShellBackend *shell_backend);
EShellBackend  *message_list_get_shell_backend (MessageList *message_list);
void           message_list_set_folder (MessageList *message_list, CamelFolder *camel_folder, const char *uri, gboolean outgoing);

void	       message_list_freeze(MessageList *ml);
void	       message_list_thaw(MessageList *ml);

GPtrArray     *message_list_get_uids(MessageList *message_list);
GPtrArray     *message_list_get_selected(MessageList *ml);
void           message_list_set_selected(MessageList *ml, GPtrArray *uids);
void	       message_list_free_uids(MessageList *ml, GPtrArray *uids);

/* select next/prev message helpers */
gboolean       message_list_select     (MessageList *message_list,
					MessageListSelectDirection direction,
					guint32 flags,
					guint32 mask);
gboolean message_list_can_select(MessageList *ml, MessageListSelectDirection direction, guint32 flags, guint32 mask);

void           message_list_select_uid (MessageList *message_list,
					const char *uid);

void           message_list_select_next_thread (MessageList *ml);

/* selection manipulation */
void           message_list_select_all (MessageList *ml);
void           message_list_select_thread (MessageList *ml);
void           message_list_select_subthread (MessageList *ml);
void           message_list_invert_selection (MessageList *ml);

/* clipboard stuff */
void	       message_list_copy(MessageList *ml, gboolean cut);
void           message_list_paste (MessageList *ml);

/* info */
unsigned int   message_list_length (MessageList *ml);
unsigned int   message_list_hidden (MessageList *ml);

/* hide specific messages */
void	       message_list_hide_add (MessageList *ml, const char *expr, unsigned int lower, unsigned int upper);
void	       message_list_hide_uids (MessageList *ml, GPtrArray *uids);
void	       message_list_hide_clear (MessageList *ml);

void	       message_list_set_threaded (MessageList *ml, gboolean threaded);
void           message_list_set_threaded_expand_all (MessageList *ml);
void           message_list_set_threaded_collapse_all (MessageList *ml);

void	       message_list_set_hidedeleted (MessageList *ml, gboolean hidedeleted);
void	       message_list_set_search (MessageList *ml, const char *search);
void	       message_list_ensure_message (MessageList *ml, const char *uid);

void           message_list_save_state (MessageList *ml);

double         message_list_get_scrollbar_position (MessageList *ml);
void           message_list_set_scrollbar_position (MessageList *ml, double pos);

#define MESSAGE_LIST_LOCK(m, l) g_mutex_lock(((MessageList *)m)->l)
#define MESSAGE_LIST_UNLOCK(m, l) g_mutex_unlock(((MessageList *)m)->l)

#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* _MESSAGE_LIST_H_ */