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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Authors: 
 *   Chris Lahey     <clahey@ximian.com>
 *   Jon Trowbidge   <trow@ximian.com>
 *
 * Copyright (C) 2000, 2001 Ximian, Inc.
 */

#include <config.h>

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <gtk/gtkmarshal.h>
#include <gtk/gtksignal.h>

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

#include "e-select-names-model.h"
#include "addressbook/backend/ebook/e-card-simple.h"

#define SEPARATOR ", "
#define SEPLEN    2


enum {
    E_SELECT_NAMES_MODEL_CHANGED,
    E_SELECT_NAMES_MODEL_RESIZED,
    E_SELECT_NAMES_MODEL_LAST_SIGNAL
};

static guint e_select_names_model_signals[E_SELECT_NAMES_MODEL_LAST_SIGNAL] = { 0 };

/* Object argument IDs */
enum {
    ARG_0,
    ARG_CARD,
};

enum {
    NAME_DATA_BLANK,
    NAME_DATA_CARD,
    NAME_DATA_STRING
};

enum {
    NAME_FORMAT_GIVEN_FIRST,
    NAME_FORMAT_FAMILY_FIRST
};

struct _ESelectNamesModelPrivate {
    gchar *id;
    gchar *title;

    GList *data;  /* of EDestination */
    gchar *text;
    gchar *addr_text;
};


static void e_select_names_model_init (ESelectNamesModel *model);
static void e_select_names_model_class_init (ESelectNamesModelClass *klass);

static void e_select_names_model_destroy (GtkObject *object);
static void e_select_names_model_set_arg (GtkObject *object, GtkArg *arg, guint arg_id);
static void e_select_names_model_get_arg (GtkObject *object, GtkArg *arg, guint arg_id);

GtkType
e_select_names_model_get_type (void)
{
    static GtkType model_type = 0;

    if (!model_type) {
        GtkTypeInfo model_info = {
            "ESelectNamesModel",
            sizeof (ESelectNamesModel),
            sizeof (ESelectNamesModelClass),
            (GtkClassInitFunc) e_select_names_model_class_init,
            (GtkObjectInitFunc) e_select_names_model_init,
            NULL, /* reserved_1 */
            NULL, /* reserved_2 */
            (GtkClassInitFunc) NULL
        };

        model_type = gtk_type_unique (gtk_object_get_type (), &model_info);
    }

    return model_type;
}

typedef void (*GtkSignal_NONE__INT_INT_INT) (GtkObject *object, gint arg1, gint arg2, gint arg3, gpointer user_data);
static void
local_gtk_marshal_NONE__INT_INT_INT (GtkObject    *object, 
                     GtkSignalFunc func, 
                     gpointer      func_data, 
                     GtkArg       *args)
{
    GtkSignal_NONE__INT_INT_INT rfunc;
    rfunc = (GtkSignal_NONE__INT_INT_INT) func;
    (* rfunc) (object,
           GTK_VALUE_INT(args[0]),
           GTK_VALUE_INT(args[1]),
           GTK_VALUE_INT(args[2]),
           func_data);
}


static void
e_select_names_model_class_init (ESelectNamesModelClass *klass)
{
    GtkObjectClass *object_class;

    object_class = GTK_OBJECT_CLASS(klass);

    e_select_names_model_signals[E_SELECT_NAMES_MODEL_CHANGED] =
        gtk_signal_new ("changed",
                GTK_RUN_LAST,
                object_class->type,
                GTK_SIGNAL_OFFSET (ESelectNamesModelClass, changed),
                gtk_marshal_NONE__NONE,
                GTK_TYPE_NONE, 0);

    e_select_names_model_signals[E_SELECT_NAMES_MODEL_RESIZED] =
        gtk_signal_new ("resized",
                GTK_RUN_LAST,
                object_class->type,
                GTK_SIGNAL_OFFSET (ESelectNamesModelClass, resized),
                local_gtk_marshal_NONE__INT_INT_INT,
                GTK_TYPE_NONE, 3, GTK_TYPE_INT, GTK_TYPE_INT, GTK_TYPE_INT);

    gtk_object_class_add_signals (object_class, e_select_names_model_signals, E_SELECT_NAMES_MODEL_LAST_SIGNAL);

    gtk_object_add_arg_type ("ESelectNamesModel::card",
                 GTK_TYPE_OBJECT, GTK_ARG_READWRITE, ARG_CARD);

    klass->changed = NULL;

    object_class->destroy = e_select_names_model_destroy;
    object_class->get_arg = e_select_names_model_get_arg;
    object_class->set_arg = e_select_names_model_set_arg;
}

/**
 * e_select_names_model_init:
 */
static void
e_select_names_model_init (ESelectNamesModel *model)
{
    model->priv = g_new0 (struct _ESelectNamesModelPrivate, 1);
}

static void
e_select_names_model_destroy (GtkObject *object)
{
    ESelectNamesModel *model = E_SELECT_NAMES_MODEL (object);
    
    g_free (model->priv->title);
    g_free (model->priv->id);

    g_list_foreach (model->priv->data, (GFunc) gtk_object_unref, NULL);
    g_list_free (model->priv->data);

    g_free (model->priv->text);
    g_free (model->priv->addr_text);

    g_free (model->priv);

}


/* Set_arg handler for the model */
static void
e_select_names_model_set_arg (GtkObject *object, GtkArg *arg, guint arg_id)
{
    ESelectNamesModel *model;
    
    model = E_SELECT_NAMES_MODEL (object);

    switch (arg_id) {
    case ARG_CARD:
        break;
    default:
        return;
    }
}

/* Get_arg handler for the model */
static void
e_select_names_model_get_arg (GtkObject *object, GtkArg *arg, guint arg_id)
{
    ESelectNamesModel *model;

    model = E_SELECT_NAMES_MODEL (object);

    switch (arg_id) {
    case ARG_CARD:
        break;
    default:
        arg->type = GTK_TYPE_INVALID;
        break;
    }
}


static void
e_select_names_model_changed (ESelectNamesModel *model)
{
    g_free (model->priv->text);
    model->priv->text = NULL;
    
    g_free (model->priv->addr_text);
    model->priv->addr_text = NULL;

#if 0
    {
        GList *i = model->priv->data;
        gint j = 0;
        g_print ("ESelectNamesModel state:\n");
        while (i) {
            EDestination *dest = (EDestination *) i->data;
            g_print ("%d: %s <%s>\n", j, e_destination_get_string (dest), e_destination_get_email (dest));
            i = g_list_next (i);
            ++j;
        }
        g_print ("\n");
    }
#endif

    gtk_signal_emit (GTK_OBJECT(model), e_select_names_model_signals[E_SELECT_NAMES_MODEL_CHANGED]);
}

/** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **/

ESelectNamesModel *
e_select_names_model_new (void)
{
    ESelectNamesModel *model;
    model = E_SELECT_NAMES_MODEL (gtk_type_new (e_select_names_model_get_type ()));
    return model;
}

ESelectNamesModel *
e_select_names_model_duplicate (ESelectNamesModel *old)
{
    ESelectNamesModel *model = E_SELECT_NAMES_MODEL(gtk_type_new(e_select_names_model_get_type()));
    GList *iter;

    model->priv->id = g_strdup (old->priv->id);
    model->priv->title = g_strdup (old->priv->title);
    
    for (iter = old->priv->data; iter != NULL; iter = g_list_next (iter)) {
        EDestination *dup = e_destination_copy (E_DESTINATION (iter->data));
        model->priv->data = g_list_append (model->priv->data, dup);
    }

    return model;
}

const gchar *
e_select_names_model_get_textification (ESelectNamesModel *model)
{
    g_return_val_if_fail (model != NULL, NULL);
    g_return_val_if_fail (E_IS_SELECT_NAMES_MODEL (model), NULL);

    if (model->priv->text == NULL) {

        if (model->priv->data == NULL) {
            
            model->priv->text = g_strdup ("");

        } else {
            gchar **strv = g_new0 (gchar *, g_list_length (model->priv->data)+1);
            gint i = 0;
            GList *iter = model->priv->data;
            
            while (iter) {
                EDestination *dest = E_DESTINATION (iter->data);
                strv[i] = (gchar *) e_destination_get_string (dest);
                if (strv[i] == NULL)
                    strv[i] = "";
                ++i;
                iter = g_list_next (iter);
            }

            model->priv->text = g_strjoinv (SEPARATOR, strv);
            
            g_free (strv);
        }
    }

    return model->priv->text;
}

const gchar *
e_select_names_model_get_address_text (ESelectNamesModel *model)
{
    g_return_val_if_fail (model != NULL, NULL);
    g_return_val_if_fail (E_IS_SELECT_NAMES_MODEL (model), NULL);

    if (model->priv->addr_text == NULL) {

        if (model->priv->data == NULL) {

            model->priv->addr_text = g_strdup ("");

        } else {
            gchar **strv = g_new0 (gchar *, g_list_length (model->priv->data)+1);
            gint i = 0;
            GList *iter = model->priv->data;

            while (iter) {
                EDestination *dest = E_DESTINATION (iter->data);
                strv[i] = (gchar *) e_destination_get_email_verbose (dest);
                if (strv[i])
                    ++i;
                iter = g_list_next (iter);
            }

            model->priv->addr_text = g_strjoinv (SEPARATOR, strv);

            g_free (strv);
        }
    }

    return model->priv->addr_text;
}

gint
e_select_names_model_count (ESelectNamesModel *model)
{
    g_return_val_if_fail (model != NULL, 0);
    g_return_val_if_fail (E_IS_SELECT_NAMES_MODEL (model), 0);

    return g_list_length (model->priv->data);
}

const EDestination *
e_select_names_model_get_destination (ESelectNamesModel *model, gint index)
{
    g_return_val_if_fail (model && E_IS_SELECT_NAMES_MODEL (model), NULL);
    g_return_val_if_fail (0 <= index, NULL);
    g_return_val_if_fail (index < g_list_length (model->priv->data), NULL);

    return E_DESTINATION (g_list_nth_data (model->priv->data, index));
}

gchar *
e_select_names_model_export_destinationv (ESelectNamesModel *model)
{
    EDestination **destv;
    gchar *str;
    gint i, len = 0;
    GList *j;
    g_return_val_if_fail (model && E_IS_SELECT_NAMES_MODEL (model), NULL);

    len = g_list_length (model->priv->data);
    destv = g_new0 (EDestination *, len+1);
    
    for (i=0, j = model->priv->data; j != NULL; j = g_list_next (j)) {
        EDestination *dest = E_DESTINATION (j->data);

        if (dest)
            destv[i++] = dest;
    }

    str = e_destination_exportv (destv);
    g_free (destv);

    return str;
}

static
void send_changed (EDestination *dest, ECard *card, gpointer closure)
{
    ESelectNamesModel *model = closure;
    e_select_names_model_changed (model);
}

void
e_select_names_model_import_destinationv (ESelectNamesModel *model,
                      gchar *destinationv)
{
    EDestination **destv;
    gint i;

    g_return_if_fail (model && E_IS_SELECT_NAMES_MODEL (model));

    destv = e_destination_importv (destinationv);

    e_select_names_model_delete_all (model);
    for (i = 0; destv[i]; i++) {
        e_destination_use_card (destv[i], send_changed, model);
        e_select_names_model_append (model, destv[i]);
    }
    g_free (destv);
}

ECard *
e_select_names_model_get_card (ESelectNamesModel *model, gint index)
{
    const EDestination *dest;

    g_return_val_if_fail (model && E_IS_SELECT_NAMES_MODEL (model), NULL);
    g_return_val_if_fail (0 <= index, NULL);
    g_return_val_if_fail (index < g_list_length (model->priv->data), NULL);

    dest = e_select_names_model_get_destination (model, index);
    return dest ? e_destination_get_card (dest) : NULL;

}

const gchar *
e_select_names_model_get_string (ESelectNamesModel *model, gint index)
{
    const EDestination *dest;

    g_return_val_if_fail (model && E_IS_SELECT_NAMES_MODEL (model), NULL);
    g_return_val_if_fail (0 <= index, NULL);
    g_return_val_if_fail (index < g_list_length (model->priv->data), NULL);

    dest = e_select_names_model_get_destination (model, index);
    
    return dest ? e_destination_get_string (dest) : "";
}

void
e_select_names_model_insert (ESelectNamesModel *model, gint index, EDestination *dest)
{
    g_return_if_fail (model != NULL);
    g_return_if_fail (E_IS_SELECT_NAMES_MODEL (model));
    g_return_if_fail (0 <= index && index <= g_list_length (model->priv->data));
    g_return_if_fail (dest && E_IS_DESTINATION (dest));

    model->priv->data = g_list_insert (model->priv->data, dest, index);
    
    gtk_object_ref (GTK_OBJECT (dest));
    gtk_object_sink (GTK_OBJECT (dest));

    e_select_names_model_changed (model);
}

void
e_select_names_model_append (ESelectNamesModel *model, EDestination *dest)
{
    g_return_if_fail (model && E_IS_SELECT_NAMES_MODEL (model));
    g_return_if_fail (dest && E_IS_DESTINATION (dest));

    model->priv->data = g_list_append (model->priv->data, dest);

    gtk_object_ref  (GTK_OBJECT (dest));
    gtk_object_sink (GTK_OBJECT (dest));

    e_select_names_model_changed (model);
}

void
e_select_names_model_replace (ESelectNamesModel *model, gint index, EDestination *dest)
{
    GList *node;
    gint old_strlen=0, new_strlen=0;

    g_return_if_fail (model != NULL);
    g_return_if_fail (E_IS_SELECT_NAMES_MODEL (model));
    g_return_if_fail (model->priv->data == NULL || (0 <= index && index < g_list_length (model->priv->data)));
    g_return_if_fail (dest && E_IS_DESTINATION (dest));
    
    new_strlen = e_destination_get_strlen (dest);

    if (model->priv->data == NULL) {

        model->priv->data = g_list_append (model->priv->data, dest);
        gtk_object_ref (GTK_OBJECT (dest));
        gtk_object_sink (GTK_OBJECT (dest));

    } else {
        
        node = g_list_nth (model->priv->data, index);

        if (node->data != dest) {
            old_strlen = e_destination_get_strlen (E_DESTINATION (node->data));

            gtk_object_unref (GTK_OBJECT (node->data));

            node->data = dest;
            gtk_object_ref (GTK_OBJECT (dest));
            gtk_object_sink (GTK_OBJECT (dest));
        }
    }

    e_select_names_model_changed (model);

    gtk_signal_emit (GTK_OBJECT (model), e_select_names_model_signals[E_SELECT_NAMES_MODEL_RESIZED],
             index, old_strlen, new_strlen);
}

void
e_select_names_model_delete (ESelectNamesModel *model, gint index)
{
    GList *node;

    g_return_if_fail (model != NULL);
    g_return_if_fail (E_IS_SELECT_NAMES_MODEL (model));
    g_return_if_fail (0 <= index && index < g_list_length (model->priv->data));
    
    node = g_list_nth (model->priv->data, index);
    gtk_object_unref (GTK_OBJECT (node->data));

    model->priv->data = g_list_remove_link (model->priv->data, node);
    g_list_free_1 (node);

    e_select_names_model_changed (model);
}

void
e_select_names_model_clean (ESelectNamesModel *model)
{
    GList *iter, *next;
    gboolean changed = FALSE;

    g_return_if_fail (model != NULL && E_IS_SELECT_NAMES_MODEL (model));

    iter = model->priv->data;

    while (iter) {
        EDestination *dest;

        next = g_list_next (iter);
        dest = iter->data ? E_DESTINATION (iter->data) : NULL;

        if (dest == NULL || e_destination_is_empty (dest)) {
            if (dest)
                gtk_object_unref (GTK_OBJECT (dest));
            model->priv->data = g_list_remove_link (model->priv->data, iter);
            g_list_free_1 (iter);
            changed = TRUE;
        }
        
        iter = next;
    }

    if (changed)
        e_select_names_model_changed (model);
}

void
e_select_names_model_delete_all (ESelectNamesModel *model)
{
    g_return_if_fail (model != NULL && E_IS_SELECT_NAMES_MODEL (model));

    g_list_foreach (model->priv->data, (GFunc) gtk_object_unref, NULL);
    g_list_free (model->priv->data);
    model->priv->data = NULL;

    e_select_names_model_changed (model);
}

void
e_select_names_model_name_pos (ESelectNamesModel *model, gint index, gint *pos, gint *length)
{
    gint rp = 0, i, len = 0;
    GList *iter;

    g_return_if_fail (model != NULL);
    g_return_if_fail (E_IS_SELECT_NAMES_MODEL (model));

    i = 0;
    iter = model->priv->data;
    while (iter && i <= index) {
        rp += len + (i > 0 ? SEPLEN : 0);
        len = e_destination_get_strlen (E_DESTINATION (iter->data));
        ++i;
        iter = g_list_next (iter);
    }
    
    if (i <= index) {
        rp = -1;
        len = 0;
    }
    
    if (pos)
        *pos = rp;
    if (length)
        *length = len;
}

void
e_select_names_model_text_pos (ESelectNamesModel *model, gint pos, gint *index, gint *start_pos, gint *length)
{
    GList *iter;
    gint len = 0, i = 0, sp = 0, adj = 0;

    g_return_if_fail (model != NULL);
    g_return_if_fail (E_IS_SELECT_NAMES_MODEL (model));

    iter = model->priv->data;

    while (iter != NULL) {
        len = e_destination_get_strlen (E_DESTINATION (iter->data));

#if 0
        g_print ("text_pos: %d %d %d %d\n", len, sp, pos, adj);
#endif

        if (sp <= pos && pos <= sp + len + adj) {
#if 0
            g_print ("breaking\n");
#endif
            break;
        }

        sp += len + adj + 1;
        adj = 1;
        ++i;

        iter = g_list_next (iter);
    }

    if (i != 0)
        ++sp; /* skip past "magic space" */

    if (iter == NULL) {
#if 0
        g_print ("text_pos ended NULL\n");
#endif
        i = -1;
        sp = -1;
        len = 0;
    } else {
#if 0
        g_print ("text_pos got index %d\n", i);
#endif
    }

    if (index)
        *index = i;
    if (start_pos)
        *start_pos = sp;
    if (length)
        *length = len;
}