path: root/addressbook/gui/component/select-names/e-select-names-model.c

/* -*- 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 <libebook/e-contact.h>
#include "e-select-names-model.h"
#include "e-select-names-marshal.h"

#define MAX_LENGTH 2047


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_CONTACT,
};

struct _ESelectNamesModelPrivate {
    gchar *id;
    gchar *title;

    GList *data;  /* of EABDestination */

    gint limit;

    gint freeze_count;
    gboolean pending_changed;
};

static GObjectClass *parent_class = NULL;

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_dispose (GObject *object);

GType
e_select_names_model_get_type (void)
{
    static GType type = 0;

    if (!type) {
        static const GTypeInfo info =  {
            sizeof (ESelectNamesModelClass),
            NULL,           /* base_init */
            NULL,           /* base_finalize */
            (GClassInitFunc) e_select_names_model_class_init,
            NULL,           /* class_finalize */
            NULL,           /* class_data */
            sizeof (ESelectNamesModel),
            0,             /* n_preallocs */
            (GInstanceInitFunc) e_select_names_model_init,
        };

        type = g_type_register_static (G_TYPE_OBJECT, "ESelectNamesModel", &info, 0);
    }

    return type;
}

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

    object_class = G_OBJECT_CLASS(klass);
    parent_class = g_type_class_peek_parent (klass);

    e_select_names_model_signals[E_SELECT_NAMES_MODEL_CHANGED] =
        g_signal_new ("changed",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (ESelectNamesModelClass, changed),
                  NULL, NULL,
                  e_select_names_marshal_NONE__NONE,
                  G_TYPE_NONE, 0);

    e_select_names_model_signals[E_SELECT_NAMES_MODEL_RESIZED] =
        g_signal_new ("resized",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (ESelectNamesModelClass, resized),
                  NULL, NULL,
                  e_select_names_marshal_NONE__INT_INT_INT,
                  G_TYPE_NONE, 3,
                  G_TYPE_INT,
                  G_TYPE_INT,
                  G_TYPE_INT);

    klass->changed = NULL;

    object_class->dispose = e_select_names_model_dispose;
}

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

    model->priv->limit = -1;
}

static void
e_select_names_model_dispose (GObject *object)
{
    ESelectNamesModel *model = E_SELECT_NAMES_MODEL (object);

    if (model->priv) {
        g_free (model->priv->title);
        g_free (model->priv->id);

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

        g_free (model->priv);
        model->priv = NULL;
    }

    if (G_OBJECT_CLASS (parent_class)->dispose)
        G_OBJECT_CLASS (parent_class)->dispose (object);
}


static void
e_select_names_model_changed (ESelectNamesModel *model)
{
    if (model->priv->freeze_count > 0) {
        model->priv->pending_changed = TRUE;
    } else {
        g_signal_emit (model, e_select_names_model_signals[E_SELECT_NAMES_MODEL_CHANGED], 0);
        model->priv->pending_changed = FALSE;
    }
}

static void
destination_changed_proxy (EABDestination *dest, gpointer closure)
{
    e_select_names_model_changed (E_SELECT_NAMES_MODEL (closure));
}

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

ESelectNamesModel *
e_select_names_model_new (void)
{
    ESelectNamesModel *model;
    model = g_object_new (E_TYPE_SELECT_NAMES_MODEL, NULL);
    return model;
}

ESelectNamesModel *
e_select_names_model_duplicate (ESelectNamesModel *old)
{
    ESelectNamesModel *model = e_select_names_model_new ();
    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)) {
        EABDestination *dup = eab_destination_copy (EAB_DESTINATION (iter->data));
        e_select_names_model_append (model, dup);
    }

    model->priv->limit = old->priv->limit;

    return model;
}

gchar *
e_select_names_model_get_textification (ESelectNamesModel *model, const char *separator)
{
    gchar *text;

    g_return_val_if_fail (model != NULL, NULL);
    g_return_val_if_fail (E_IS_SELECT_NAMES_MODEL (model), NULL);
    g_return_val_if_fail (separator && *separator, NULL);

    if (model->priv->data == NULL) {
        
        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) {
            EABDestination *dest = EAB_DESTINATION (iter->data);
            strv[i] = (gchar *) eab_destination_get_textrep (dest, FALSE);
            ++i;
            iter = g_list_next (iter);
        }
        
        text = g_strjoinv (separator, strv);

        if (g_utf8_strlen(text, -1) > MAX_LENGTH) {
            char *p = g_utf8_offset_to_pointer (text, MAX_LENGTH);
            *p = '\0';
            text = g_realloc (text, p - text + 1);
        }
        
        g_free (strv);
        
    }

    return text;
}

gchar *
e_select_names_model_get_address_text (ESelectNamesModel *model, const char *separator)
{
    gchar *addr_text;

    g_return_val_if_fail (model != NULL, NULL);
    g_return_val_if_fail (E_IS_SELECT_NAMES_MODEL (model), NULL);
    g_return_val_if_fail (separator && *separator, NULL);

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

        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) {
            EABDestination *dest = EAB_DESTINATION (iter->data);
            strv[i] = (gchar *) eab_destination_get_address (dest);
            if (strv[i])
                ++i;
            iter = g_list_next (iter);
        }
        
        addr_text = g_strjoinv (separator, strv);
        
        g_free (strv);
        
    }

    return 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);
}

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

    return model->priv->limit;
}

void
e_select_names_model_set_limit (ESelectNamesModel *model, gint limit)
{
    g_return_if_fail (model != NULL);
    g_return_if_fail (E_IS_SELECT_NAMES_MODEL (model));

    model->priv->limit = MAX (limit, -1);
}

gboolean
e_select_names_model_at_limit (ESelectNamesModel *model)
{
    g_return_val_if_fail (model != NULL, TRUE);
    g_return_val_if_fail (E_IS_SELECT_NAMES_MODEL (model), TRUE);

    return model->priv->limit >= 0 && g_list_length (model->priv->data) >= model->priv->limit;
}

const EABDestination *
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 EAB_DESTINATION (g_list_nth_data (model->priv->data, index));
}

gchar *
e_select_names_model_export_destinationv (ESelectNamesModel *model)
{
    EABDestination **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 (EABDestination *, len+1);
    
    for (i=0, j = model->priv->data; j != NULL; j = g_list_next (j)) {
        EABDestination *dest = EAB_DESTINATION (j->data);

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

    str = eab_destination_exportv (destv);
    g_free (destv);

    return str;
}

static void send_changed (EABDestination *dest, EContact *contact, gpointer closure)
{
    ESelectNamesModel *model = closure;
    e_select_names_model_changed (model);
}

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

    g_return_if_fail (model && E_IS_SELECT_NAMES_MODEL (model));

    destv = eab_destination_importv (destinationv);

    e_select_names_model_delete_all (model);

    if (destv == NULL)
        return;

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

EContact *
e_select_names_model_get_contact (ESelectNamesModel *model, gint index)
{
    const EABDestination *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 ? eab_destination_get_contact (dest) : NULL;

}

const gchar *
e_select_names_model_get_string (ESelectNamesModel *model, gint index)
{
    const EABDestination *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 ? eab_destination_get_textrep (dest, FALSE) : "";
}

static void
connect_destination (ESelectNamesModel *model, EABDestination *dest)
{
    g_signal_connect (dest,
              "changed",
              G_CALLBACK (destination_changed_proxy),
              model);
}

static void
disconnect_destination (ESelectNamesModel *model, EABDestination *dest)
{
    g_signal_handlers_disconnect_by_func (dest, destination_changed_proxy, model);
}

gboolean
e_select_names_model_contains (ESelectNamesModel *model, const EABDestination *dest)
{
    GList *iter;

    g_return_val_if_fail (E_IS_SELECT_NAMES_MODEL (model), FALSE);
    g_return_val_if_fail (EAB_IS_DESTINATION (dest), FALSE);

    for (iter = model->priv->data; iter != NULL; iter = g_list_next (iter)) {
        if (iter->data != NULL && eab_destination_equal (dest, EAB_DESTINATION (iter->data)))
            return TRUE;
    }

    return FALSE;
}

void
e_select_names_model_insert (ESelectNamesModel *model, gint index, EABDestination *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 && EAB_IS_DESTINATION (dest));

    if (e_select_names_model_at_limit (model)) {
        /* FIXME: This is bad. */
        g_object_unref (dest);
        return;
    }

    connect_destination (model, dest);

    model->priv->data = g_list_insert (model->priv->data, dest, index);
    
    g_object_ref (dest);

    e_select_names_model_changed (model);
}

void
e_select_names_model_append (ESelectNamesModel *model, EABDestination *dest)
{
    g_return_if_fail (model && E_IS_SELECT_NAMES_MODEL (model));
    g_return_if_fail (dest && EAB_IS_DESTINATION (dest));

    if (e_select_names_model_at_limit (model)) {
        /* FIXME: This is bad. */
        g_object_unref (dest);
        return;
    }

    connect_destination (model, dest);

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

    g_object_ref  (dest);

    e_select_names_model_changed (model);
}

void
e_select_names_model_replace (ESelectNamesModel *model, gint index, EABDestination *dest)
{
    GList *node;
    const gchar *new_str, *old_str;
    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 && EAB_IS_DESTINATION (dest));
    
    new_str = eab_destination_get_textrep (dest, FALSE);
    new_strlen = new_str ? strlen (new_str) : 0;

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

        connect_destination (model, dest);

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

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

        if (node->data != dest) {

            disconnect_destination (model, EAB_DESTINATION (node->data));
            connect_destination (model, dest);

            old_str = eab_destination_get_textrep (EAB_DESTINATION (node->data), FALSE);
            old_strlen = old_str ? strlen (old_str) : 0;

            g_object_unref (node->data);

            node->data = dest;
            g_object_ref (dest);
        }
    }

    e_select_names_model_changed (model);

    g_signal_emit (model, e_select_names_model_signals[E_SELECT_NAMES_MODEL_RESIZED], 0,
               index, old_strlen, new_strlen);
}

void
e_select_names_model_delete (ESelectNamesModel *model, gint index)
{
    GList *node;
    EABDestination *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));
    
    node = g_list_nth (model->priv->data, index);
    dest = EAB_DESTINATION (node->data);

    disconnect_destination (model, dest);
    g_object_unref (dest);

    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, gboolean clean_last_entry)
{
    GList *iter, *next;
    gboolean changed = FALSE;

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

    iter = model->priv->data;

    while (iter) {
        EABDestination *dest;

        next = g_list_next (iter);

        if (next == NULL && !clean_last_entry)
            break;
        
        dest = iter->data ? EAB_DESTINATION (iter->data) : NULL;

        if (dest == NULL || eab_destination_is_empty (dest)) {
            if (dest) {
                disconnect_destination (model, dest);
                g_object_unref (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);
}

static void
delete_all_iter (gpointer data, gpointer closure)
{
    disconnect_destination (E_SELECT_NAMES_MODEL (closure), EAB_DESTINATION (data));
    g_object_unref (data);
}

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, delete_all_iter, model);
    g_list_free (model->priv->data);
    model->priv->data = NULL;

    e_select_names_model_changed (model);
}

void
e_select_names_model_overwrite_copy (ESelectNamesModel *dest, ESelectNamesModel *src)
{
    gint i, len;

    g_return_if_fail (dest && E_IS_SELECT_NAMES_MODEL (dest));
    g_return_if_fail (src && E_IS_SELECT_NAMES_MODEL (src));

    if (src == dest)
        return;

    e_select_names_model_delete_all (dest);
    len = e_select_names_model_count (src);
    for (i = 0; i < len; ++i) {
        const EABDestination *d = e_select_names_model_get_destination (src, i);
        if (d)
            e_select_names_model_append (dest, eab_destination_copy (d));
    }
}

void
e_select_names_model_merge (ESelectNamesModel *dest, ESelectNamesModel *src)
{
    gint i, len;

    g_return_if_fail (E_IS_SELECT_NAMES_MODEL (dest));
    g_return_if_fail (E_IS_SELECT_NAMES_MODEL (src));

    if (src == dest)
        return;

    len = e_select_names_model_count (src);
    for (i = 0; i < len; ++i) {
        const EABDestination *d = e_select_names_model_get_destination (src, i);
        if (d && !e_select_names_model_contains (dest, d))
            e_select_names_model_append (dest, eab_destination_copy (d));
    }
}

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

    g_return_if_fail (E_IS_SELECT_NAMES_MODEL (model));
    g_return_if_fail (seplen > 0);

    i = 0;
    iter = model->priv->data;
    while (iter && i <= index) {
        rp += len + (i > 0 ? seplen : 0);
        str = eab_destination_get_textrep (EAB_DESTINATION (iter->data), FALSE);
        len = str ? g_utf8_strlen (str, -1) : 0;
        ++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 seplen, gint pos, gint *index, gint *start_pos, gint *length)
{
    GList *iter;
    const gchar *str;
    gint len = 0, i = 0, sp = 0, adj = 0;

    g_return_if_fail (E_IS_SELECT_NAMES_MODEL (model));
    g_return_if_fail (seplen > 0);

    iter = model->priv->data;

    while (iter != NULL) {
        str = eab_destination_get_textrep (EAB_DESTINATION (iter->data), FALSE);
        len = str ? g_utf8_strlen (str, -1) : 0;

        if (sp <= pos && pos <= sp + len + adj) {
            break;
        }

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

        iter = g_list_next (iter);
    }

    if (i != 0)
        sp += seplen-1; /* 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;
}

void
e_select_names_model_load_all_contacts (ESelectNamesModel *model, EBook *book)
{
    GList *iter;

    g_return_if_fail (E_IS_SELECT_NAMES_MODEL (model));
    g_return_if_fail (book == NULL || E_IS_BOOK (book));

    for (iter = model->priv->data; iter != NULL; iter = g_list_next (iter)) {
        EABDestination *dest = EAB_DESTINATION (iter->data);
        if (!eab_destination_is_empty (dest)) {

            eab_destination_load_contact (dest, book);
        }
    }
}

void
e_select_names_model_cancel_all_contact_load (ESelectNamesModel *model)
{
    GList *iter;

    g_return_if_fail (E_IS_SELECT_NAMES_MODEL (model));

    for (iter = model->priv->data; iter != NULL; iter = g_list_next (iter)) {
        EABDestination *dest = EAB_DESTINATION (iter->data);
        if (!eab_destination_is_empty (dest)) {

            eab_destination_cancel_contact_load (dest);
        }
    }
}

void
e_select_names_model_freeze (ESelectNamesModel *model)
{
    g_return_if_fail (E_IS_SELECT_NAMES_MODEL (model));
    
    ++model->priv->freeze_count;
}

void
e_select_names_model_thaw (ESelectNamesModel *model)
{
    g_return_if_fail (E_IS_SELECT_NAMES_MODEL (model));
    g_return_if_fail (model->priv->freeze_count > 0);

    --model->priv->freeze_count;
    if (model->priv->pending_changed)
        e_select_names_model_changed (model);
}