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/*
 * 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_ */