path: root/addressbook/gui/widgets/e-addressbook-model.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *
 * Author:
 *   Christopher James Lahey <clahey@helixcode.com>
 *
 * (C) 1999 Helix Code, Inc.
 */

#include <config.h>
#include "e-addressbook-model.h"
#include <gnome-xml/tree.h>
#include <gnome-xml/parser.h>
#include <gnome-xml/xmlmemory.h>
#include <gnome.h>

#define PARENT_TYPE e_table_model_get_type()
/*
 * EAddressbookModel callbacks
 * These are the callbacks that define the behavior of our custom model.
 */
static void e_addressbook_model_set_arg (GtkObject *o, GtkArg *arg, guint arg_id);
static void e_addressbook_model_get_arg (GtkObject *object, GtkArg *arg, guint arg_id);


enum {
    ARG_0,
    ARG_BOOK,
    ARG_QUERY,
};

static void
addressbook_destroy(GtkObject *object)
{
    EAddressbookModel *model = E_ADDRESSBOOK_MODEL(object);
    int i;

    if (model->get_view_idle)
        g_source_remove(model->get_view_idle);
    if (model->book_view && model->create_card_id)
        gtk_signal_disconnect(GTK_OBJECT (model->book_view),
                      model->create_card_id);
    if (model->book_view && model->remove_card_id)
        gtk_signal_disconnect(GTK_OBJECT (model->book_view),
                      model->remove_card_id);
    if (model->book_view && model->modify_card_id)
        gtk_signal_disconnect(GTK_OBJECT (model->book_view),
                      model->modify_card_id);
    if (model->book)
        gtk_object_unref(GTK_OBJECT(model->book));
    if (model->book_view)
        gtk_object_unref(GTK_OBJECT(model->book_view));

    for ( i = 0; i < model->data_count; i++ ) {
        gtk_object_unref(GTK_OBJECT(model->data[i]));
    }
    g_free(model->data);
}

/* This function returns the number of columns in our ETableModel. */
static int
addressbook_col_count (ETableModel *etc)
{
    return E_CARD_SIMPLE_FIELD_LAST;
}

/* This function returns the number of rows in our ETableModel. */
static int
addressbook_row_count (ETableModel *etc)
{
    EAddressbookModel *addressbook = E_ADDRESSBOOK_MODEL(etc);
    return addressbook->data_count;
}

/* This function returns the value at a particular point in our ETableModel. */
static void *
addressbook_value_at (ETableModel *etc, int col, int row)
{
    EAddressbookModel *addressbook = E_ADDRESSBOOK_MODEL(etc);
    const char *value;
    if ( col >= E_CARD_SIMPLE_FIELD_LAST - 1|| row >= addressbook->data_count )
        return NULL;
    value = e_card_simple_get_const(addressbook->data[row], 
                    col + 1);
    return (void *)(value ? value : "");
}

/* This function sets the value at a particular point in our ETableModel. */
static void
addressbook_set_value_at (ETableModel *etc, int col, int row, const void *val)
{
    EAddressbookModel *addressbook = E_ADDRESSBOOK_MODEL(etc);
    ECard *card;
    if ( col >= E_CARD_SIMPLE_FIELD_LAST - 1|| row >= addressbook->data_count )
        return;
    e_card_simple_set(addressbook->data[row],
              col + 1,
              val);
    gtk_object_get(GTK_OBJECT(addressbook->data[row]),
               "card", &card,
               NULL);
    e_book_commit_card(addressbook->book, card, NULL, NULL);
    if ( !etc->frozen )
        e_table_model_cell_changed(etc, col, row);
}

/* This function returns whether a particular cell is editable. */
static gboolean
addressbook_is_cell_editable (ETableModel *etc, int col, int row)
{
    return TRUE;
}

/* This function duplicates the value passed to it. */
static void *
addressbook_duplicate_value (ETableModel *etc, int col, const void *value)
{
    return g_strdup(value);
}

/* This function frees the value passed to it. */
static void
addressbook_free_value (ETableModel *etc, int col, void *value)
{
    g_free(value);
}

static void *
addressbook_initialize_value (ETableModel *etc, int col)
{
    return g_strdup("");
}

static gboolean
addressbook_value_is_empty (ETableModel *etc, int col, const void *value)
{
    return !(value && *(char *)value);
}

/* This function is for when the model is unfrozen.  This can mostly
   be ignored for simple models.  */
static void
addressbook_thaw (ETableModel *etc)
{
    e_table_model_changed(etc);
}

static void
create_card(EBookView *book_view,
        const GList *cards,
        EAddressbookModel *model)
{
    model->data = g_realloc(model->data, (model->data_count + g_list_length((GList *)cards)) * sizeof(ECard *));
    for ( ; cards; cards = cards->next) {
        gtk_object_ref(GTK_OBJECT(cards->data));
        model->data[model->data_count++] = e_card_simple_new (E_CARD(cards->data));
        e_table_model_row_inserted(E_TABLE_MODEL(model), model->data_count - 1);
    }
}

static void
remove_card(EBookView *book_view,
        const char *id,
        EAddressbookModel *model)
{
    int i;
    for ( i = 0; i < model->data_count; i++) {
        if ( !strcmp(e_card_simple_get_id(model->data[i]), id) ) {
            gtk_object_unref(GTK_OBJECT(model->data[i]));
            memmove(model->data + i, model->data + i + 1, (model->data_count - i - 1) * sizeof (ECard *));
            e_table_model_row_deleted(E_TABLE_MODEL(model), i);
        }
    }
}

static void
modify_card(EBookView *book_view,
        const GList *cards,
        EAddressbookModel *model)
{
    for ( ; cards; cards = cards->next) {
        int i;
        for ( i = 0; i < model->data_count; i++) {
            if ( !strcmp(e_card_simple_get_id(model->data[i]), e_card_get_id(E_CARD(cards->data))) ) {
                gtk_object_unref(GTK_OBJECT(model->data[i]));
                model->data[i] = e_card_simple_new(E_CARD(cards->data));
                gtk_object_ref(GTK_OBJECT(model->data[i]));
                e_table_model_row_changed(E_TABLE_MODEL(model), i);
                break;
            }
        }
    }
}

static void
e_addressbook_model_class_init (GtkObjectClass *object_class)
{
    ETableModelClass *model_class = (ETableModelClass *) object_class;

    gtk_object_add_arg_type ("EAddressbookModel::book", GTK_TYPE_OBJECT, 
                 GTK_ARG_READWRITE, ARG_BOOK);
    gtk_object_add_arg_type ("EAddressbookModel::query", GTK_TYPE_STRING,
                 GTK_ARG_READWRITE, ARG_QUERY);
    
    object_class->destroy = addressbook_destroy;
    object_class->set_arg   = e_addressbook_model_set_arg;
    object_class->get_arg   = e_addressbook_model_get_arg;

    model_class->column_count = addressbook_col_count;
    model_class->row_count = addressbook_row_count;
    model_class->value_at = addressbook_value_at;
    model_class->set_value_at = addressbook_set_value_at;
    model_class->is_cell_editable = addressbook_is_cell_editable;
    model_class->duplicate_value = addressbook_duplicate_value;
    model_class->free_value = addressbook_free_value;
    model_class->initialize_value = addressbook_initialize_value;
    model_class->value_is_empty = addressbook_value_is_empty;
    model_class->thaw = addressbook_thaw;
}

static void
e_addressbook_model_init (GtkObject *object)
{
    EAddressbookModel *model = E_ADDRESSBOOK_MODEL(object);
    model->book = NULL;
    model->query = g_strdup("(contains \"full_name\" \"\")");
    model->book_view = NULL;
    model->get_view_idle = 0;
    model->create_card_id = 0;
    model->remove_card_id = 0;
    model->modify_card_id = 0;
    model->data = NULL;
    model->data_count = 0;
}

static void
book_view_loaded (EBook *book, EBookStatus status, EBookView *book_view, gpointer closure)
{
    EAddressbookModel *model = closure;
    int i;
    if (model->book_view && model->create_card_id)
        gtk_signal_disconnect(GTK_OBJECT (model->book_view),
                      model->create_card_id);
    if (model->book_view && model->remove_card_id)
        gtk_signal_disconnect(GTK_OBJECT (model->book_view),
                      model->remove_card_id);
    if (model->book_view && model->modify_card_id)
        gtk_signal_disconnect(GTK_OBJECT (model->book_view),
                      model->modify_card_id);
    if (model->book_view)
        gtk_object_unref(GTK_OBJECT(model->book_view));
    model->book_view = book_view;
    if (model->book_view)
        gtk_object_ref(GTK_OBJECT(model->book_view));
    model->create_card_id = gtk_signal_connect(GTK_OBJECT(model->book_view),
                          "card_added",
                          GTK_SIGNAL_FUNC(create_card),
                          model);
    model->remove_card_id = gtk_signal_connect(GTK_OBJECT(model->book_view),
                          "card_removed",
                          GTK_SIGNAL_FUNC(remove_card),
                          model);
    model->modify_card_id = gtk_signal_connect(GTK_OBJECT(model->book_view),
                          "card_changed",
                          GTK_SIGNAL_FUNC(modify_card),
                          model);

    for ( i = 0; i < model->data_count; i++ ) {
        gtk_object_unref(GTK_OBJECT(model->data[i]));
    }
    g_free(model->data);
    model->data = NULL;
    model->data_count = 0;
    e_table_model_changed(E_TABLE_MODEL(model));
}

static gboolean
get_view(EAddressbookModel *model)
{
    if (model->book && model->query)
        e_book_get_book_view(model->book, model->query, book_view_loaded, model);

    model->get_view_idle = 0;
    return FALSE;
}

static void
e_addressbook_model_set_arg (GtkObject *o, GtkArg *arg, guint arg_id)
{
    EAddressbookModel *model;

    model = E_ADDRESSBOOK_MODEL (o);
    
    switch (arg_id){
    case ARG_BOOK:
        if (model->book)
            gtk_object_unref(GTK_OBJECT(model->book));
        model->book = E_BOOK(GTK_VALUE_OBJECT (*arg));
        if (model->book) {
            gtk_object_ref(GTK_OBJECT(model->book));
            if (model->get_view_idle == 0)
                model->get_view_idle = g_idle_add((GSourceFunc)get_view, model);
        }
        break;
    case ARG_QUERY:
        if (model->query)
            g_free(model->query);
        model->query = g_strdup(GTK_VALUE_STRING (*arg));
        if (model->get_view_idle == 0)
            model->get_view_idle = g_idle_add((GSourceFunc)get_view, model);
        break;
    }
}

static void
e_addressbook_model_get_arg (GtkObject *object, GtkArg *arg, guint arg_id)
{
    EAddressbookModel *e_addressbook_model;

    e_addressbook_model = E_ADDRESSBOOK_MODEL (object);

    switch (arg_id) {
    case ARG_BOOK:
        GTK_VALUE_OBJECT (*arg) = GTK_OBJECT(e_addressbook_model->book);
        break;
    case ARG_QUERY:
        GTK_VALUE_STRING (*arg) = g_strdup(e_addressbook_model->query);
        break;
    default:
        arg->type = GTK_TYPE_INVALID;
        break;
    }
}

GtkType
e_addressbook_model_get_type (void)
{
    static GtkType type = 0;

    if (!type){
        GtkTypeInfo info = {
            "EAddressbookModel",
            sizeof (EAddressbookModel),
            sizeof (EAddressbookModelClass),
            (GtkClassInitFunc) e_addressbook_model_class_init,
            (GtkObjectInitFunc) e_addressbook_model_init,
            NULL, /* reserved 1 */
            NULL, /* reserved 2 */
            (GtkClassInitFunc) NULL
        };

        type = gtk_type_unique (PARENT_TYPE, &info);
    }

    return type;
}

ETableModel *
e_addressbook_model_new (void)
{
    EAddressbookModel *et;

    et = gtk_type_new (e_addressbook_model_get_type ());
    
    return E_TABLE_MODEL(et);
}