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@ximian.com>
 *
 * (C) 1999 Ximian, Inc.
 */

#include <config.h>
#include "e-addressbook-marshal.h"
#include "e-addressbook-model.h"
#include <libxml/tree.h>
#include <libxml/parser.h>
#include <libxml/xmlmemory.h>
#include <gnome.h>
#include <gal/widgets/e-gui-utils.h>
#include "e-addressbook-util.h"
#include "e-addressbook-marshal.h"

#define PARENT_TYPE G_TYPE_OBJECT
GObjectClass *parent_class;

/*
 * EAddressbookModel callbacks
 * These are the callbacks that define the behavior of our custom model.
 */
static void e_addressbook_model_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
static void e_addressbook_model_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);


enum {
    PROP_0,
    PROP_BOOK,
    PROP_QUERY,
    PROP_EDITABLE,
};

enum {
    WRITABLE_STATUS,
    STATUS_MESSAGE,
    SEARCH_RESULT,
    FOLDER_BAR_MESSAGE,
    CARD_ADDED,
    CARD_REMOVED,
    CARD_CHANGED,
    MODEL_CHANGED,
    STOP_STATE_CHANGED,
    BACKEND_DIED,
    LAST_SIGNAL
};

#define COLS (E_CARD_SIMPLE_FIELD_LAST)

static guint e_addressbook_model_signals [LAST_SIGNAL] = {0, };

static void
free_data (EAddressbookModel *model)
{
    if (model->data) {
        int i;

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

        g_free(model->data);
        model->data = NULL;
        model->data_count = 0;
        model->allocated_count = 0;
    }
}

static void
remove_book_view(EAddressbookModel *model)
{
    if (model->book_view && model->create_card_id)
        g_signal_handler_disconnect (model->book_view,
                         model->create_card_id);
    if (model->book_view && model->remove_card_id)
        g_signal_handler_disconnect (model->book_view,
                         model->remove_card_id);
    if (model->book_view && model->modify_card_id)
        g_signal_handler_disconnect (model->book_view,
                         model->modify_card_id);
    if (model->book_view && model->status_message_id)
        g_signal_handler_disconnect (model->book_view,
                         model->status_message_id);
    if (model->book_view && model->sequence_complete_id)
        g_signal_handler_disconnect (model->book_view,
                         model->sequence_complete_id);

    model->create_card_id = 0;
    model->remove_card_id = 0;
    model->modify_card_id = 0;
    model->status_message_id = 0;
    model->sequence_complete_id = 0;

    model->search_in_progress = FALSE;

    if (model->book_view) {
        e_book_view_stop (model->book_view);
        g_object_unref (model->book_view);
        model->book_view = NULL;
    }
}

static void
addressbook_dispose(GObject *object)
{
    EAddressbookModel *model = E_ADDRESSBOOK_MODEL(object);

    if (model->get_view_idle) {
        g_source_remove(model->get_view_idle);
        model->get_view_idle = 0;
    }

    remove_book_view(model);
    free_data (model);

    if (model->book) {
        if (model->writable_status_id)
            g_signal_handler_disconnect (model->book,
                             model->writable_status_id);
        model->writable_status_id = 0;

        if (model->backend_died_id)
            g_signal_handler_disconnect (model->book,
                             model->backend_died_id);
        model->backend_died_id = 0;

        g_object_unref (model->book);
        model->book = NULL;
    }

    if (model->query) {
        g_free (model->query);
        model->query = NULL;
    }

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

static void
update_folder_bar_message (EAddressbookModel *model)
{
    int count;
    char *message;

    count = model->data_count;

    switch (count) {
    case 0:
        message = g_strdup (_("No cards"));
        break;
    case 1:
        message = g_strdup (_("1 card"));
        break;
    default:
        message = g_strdup_printf (_("%d cards"), count);
        break;
    }

    g_signal_emit (model,
               e_addressbook_model_signals [FOLDER_BAR_MESSAGE], 0,
               message);

    g_free (message);
}

static void
create_card(EBookView *book_view,
        const GList *cards,
        EAddressbookModel *model)
{
    int old_count = model->data_count;
    int length = g_list_length ((GList *)cards);

    if (model->data_count + length > model->allocated_count) {
        while (model->data_count + length > model->allocated_count)
            model->allocated_count = model->allocated_count * 2 + 1;
        model->data = g_renew(ECard *, model->data, model->allocated_count);
    }

    for ( ; cards; cards = cards->next) {
        model->data[model->data_count++] = cards->data;
        g_object_ref (cards->data);
    }

    g_signal_emit (model,
               e_addressbook_model_signals [CARD_ADDED], 0,
               old_count, model->data_count - old_count);

    update_folder_bar_message (model);
}

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_get_id(model->data[i]), id) ) {
            g_object_unref (model->data[i]);
            memmove(model->data + i, model->data + i + 1, (model->data_count - i - 1) * sizeof (ECard *));
            model->data_count--;

            g_signal_emit (model,
                       e_addressbook_model_signals [CARD_REMOVED], 0,
                       i);
            update_folder_bar_message (model);
            break;
        }
    }
}

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_get_id(model->data[i]), e_card_get_id(E_CARD(cards->data))) ) {
                g_object_unref (model->data[i]);
                model->data[i] = e_card_duplicate(E_CARD(cards->data));
                g_signal_emit (model,
                           e_addressbook_model_signals [CARD_CHANGED], 0,
                           i);
                break;
            }
        }
    }
}

static void
status_message (EBookView *book_view,
        char* status,
        EAddressbookModel *model)
{
    g_signal_emit (model,
               e_addressbook_model_signals [STATUS_MESSAGE], 0,
               status);
}

static void
sequence_complete (EBookView *book_view,
           EBookViewStatus status,
           EAddressbookModel *model)
{
    model->search_in_progress = FALSE;
    status_message (book_view, NULL, model);
    g_signal_emit (model,
               e_addressbook_model_signals [SEARCH_RESULT], 0,
               status);
    g_signal_emit (model,
               e_addressbook_model_signals [STOP_STATE_CHANGED], 0);
}

static void
writable_status (EBook *book,
         gboolean writable,
         EAddressbookModel *model)
{
    if (!model->editable_set) {
        model->editable = writable;

        g_signal_emit (model,
                   e_addressbook_model_signals [WRITABLE_STATUS], 0,
                   writable);
    }
}

static void
backend_died (EBook *book,
          EAddressbookModel *model)
{
    g_signal_emit (model,
               e_addressbook_model_signals [BACKEND_DIED], 0);
}

static void
e_addressbook_model_class_init (GObjectClass *object_class)
{
    parent_class = g_type_class_ref (PARENT_TYPE);

    object_class->dispose = addressbook_dispose;
    object_class->set_property   = e_addressbook_model_set_property;
    object_class->get_property   = e_addressbook_model_get_property;

    g_object_class_install_property (object_class, PROP_BOOK,
                     g_param_spec_object ("book",
                                  _("Book"),
                                  /*_( */"XXX blurb" /*)*/,
                                  E_TYPE_BOOK,
                                  G_PARAM_READWRITE));

    g_object_class_install_property (object_class, PROP_QUERY,
                     g_param_spec_string ("query",
                                  _("Query"),
                                  /*_( */"XXX blurb" /*)*/,
                                  NULL,
                                  G_PARAM_READWRITE));

    g_object_class_install_property (object_class, PROP_EDITABLE,
                     g_param_spec_boolean ("editable",
                                   _("Editable"),
                                   /*_( */"XXX blurb" /*)*/,
                                   FALSE,
                                   G_PARAM_READWRITE));

    e_addressbook_model_signals [WRITABLE_STATUS] =
        g_signal_new ("writable_status",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (EAddressbookModelClass, writable_status),
                  NULL, NULL,
                  e_addressbook_marshal_NONE__BOOL,
                  G_TYPE_NONE,
                  1, G_TYPE_BOOLEAN);

    e_addressbook_model_signals [STATUS_MESSAGE] =
        g_signal_new ("status_message",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (EAddressbookModelClass, status_message),
                  NULL, NULL,
                  e_addressbook_marshal_NONE__POINTER,
                  G_TYPE_NONE,
                  1, G_TYPE_POINTER);

    e_addressbook_model_signals [SEARCH_RESULT] =
        g_signal_new ("search_result",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (EAddressbookModelClass, search_result),
                  NULL, NULL,
                  e_addressbook_marshal_NONE__INT,
                  G_TYPE_NONE, 1, G_TYPE_INT);
    
    e_addressbook_model_signals [FOLDER_BAR_MESSAGE] =
        g_signal_new ("folder_bar_message",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (EAddressbookModelClass, folder_bar_message),
                  NULL, NULL,
                  e_addressbook_marshal_NONE__POINTER,
                  G_TYPE_NONE, 1, G_TYPE_POINTER);

    e_addressbook_model_signals [CARD_ADDED] =
        g_signal_new ("card_added",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (EAddressbookModelClass, card_added),
                  NULL, NULL,
                  e_addressbook_marshal_NONE__INT_INT,
                  G_TYPE_NONE, 2, G_TYPE_INT, G_TYPE_INT);

    e_addressbook_model_signals [CARD_REMOVED] =
        g_signal_new ("card_removed",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (EAddressbookModelClass, card_removed),
                  NULL, NULL,
                  e_addressbook_marshal_NONE__INT,
                  G_TYPE_NONE, 1, G_TYPE_INT);

    e_addressbook_model_signals [CARD_CHANGED] =
        g_signal_new ("card_changed",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (EAddressbookModelClass, card_changed),
                  NULL, NULL,
                  e_addressbook_marshal_NONE__INT,
                  G_TYPE_NONE, 1, G_TYPE_INT);

    e_addressbook_model_signals [MODEL_CHANGED] =
        g_signal_new ("model_changed",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (EAddressbookModelClass, model_changed),
                  NULL, NULL,
                  e_addressbook_marshal_NONE__NONE,
                  G_TYPE_NONE, 0);

    e_addressbook_model_signals [STOP_STATE_CHANGED] =
        g_signal_new ("stop_state_changed",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (EAddressbookModelClass, stop_state_changed),
                  NULL, NULL,
                  e_addressbook_marshal_NONE__NONE,
                  G_TYPE_NONE, 0);

    e_addressbook_model_signals [BACKEND_DIED] =
        g_signal_new ("backend_died",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (EAddressbookModelClass, backend_died),
                  NULL, NULL,
                  e_addressbook_marshal_NONE__NONE,
                  G_TYPE_NONE, 0);
}

static void
e_addressbook_model_init (GObject *object)
{
    EAddressbookModel *model = E_ADDRESSBOOK_MODEL(object);
    model->book = NULL;
    model->query = g_strdup("(contains \"x-evolution-any-field\" \"\")");
    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->status_message_id = 0;
    model->writable_status_id = 0;
    model->backend_died_id = 0;
    model->sequence_complete_id = 0;
    model->data = NULL;
    model->data_count = 0;
    model->allocated_count = 0;
    model->search_in_progress = FALSE;
    model->editable = FALSE;
    model->editable_set = FALSE;
    model->first_get_view = TRUE;
}

static void
book_view_loaded (EBook *book, EBookStatus status, EBookView *book_view, gpointer closure)
{
    EAddressbookModel *model = closure;

    remove_book_view(model);

    if (status != E_BOOK_STATUS_SUCCESS) {
        e_addressbook_error_dialog (_("Error getting book view"), status);
        return;
    }

    model->book_view = book_view;
    if (model->book_view)
        g_object_ref (model->book_view);
    model->create_card_id = g_signal_connect(model->book_view,
                         "card_added",
                         G_CALLBACK (create_card),
                         model);
    model->remove_card_id = g_signal_connect(model->book_view,
                         "card_removed",
                         G_CALLBACK (remove_card),
                         model);
    model->modify_card_id = g_signal_connect(model->book_view,
                         "card_changed",
                         G_CALLBACK(modify_card),
                         model);
    model->status_message_id = g_signal_connect(model->book_view,
                            "status_message",
                            G_CALLBACK(status_message),
                            model);
    model->sequence_complete_id = g_signal_connect(model->book_view,
                               "sequence_complete",
                               G_CALLBACK(sequence_complete),
                               model);

    free_data (model);

    model->search_in_progress = TRUE;
    g_signal_emit (model,
               e_addressbook_model_signals [MODEL_CHANGED], 0);
    g_signal_emit (model,
               e_addressbook_model_signals [STOP_STATE_CHANGED], 0);
}

static gboolean
get_view (EAddressbookModel *model)
{
    if (model->book && model->query) {
        if (model->first_get_view) {
            char *capabilities;
            capabilities = e_book_get_static_capabilities (model->book);
            if (capabilities && strstr (capabilities, "do-initial-query")) {
                e_book_get_book_view (model->book, model->query, book_view_loaded, model);
            } else {
                remove_book_view(model);
                free_data (model);
                g_signal_emit (model,
                           e_addressbook_model_signals [MODEL_CHANGED], 0);
                g_signal_emit (model,
                           e_addressbook_model_signals [STOP_STATE_CHANGED], 0);
            }
            model->first_get_view = FALSE;
            g_free (capabilities);
        }
        else
            e_book_get_book_view (model->book, model->query, book_view_loaded, model);
    }

    model->get_view_idle = 0;
    return FALSE;
}

ECard *
e_addressbook_model_get_card(EAddressbookModel *model,
                 int                row)
{
    if (model->data && 0 <= row && row < model->data_count) {
        ECard *card;
        card = e_card_duplicate (model->data[row]);
        return card;
    }
    return NULL;
}

const ECard *
e_addressbook_model_peek_card(EAddressbookModel *model,
                  int                row)
{
    if (model->data && 0 <= row && row < model->data_count) {
        return model->data[row];
    }
    return NULL;
}

static void
e_addressbook_model_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
    EAddressbookModel *model;

    model = E_ADDRESSBOOK_MODEL (object);
    
    switch (prop_id){
    case PROP_BOOK:
        if (model->book) {
            if (model->writable_status_id)
                g_signal_handler_disconnect (model->book,
                                 model->writable_status_id);
            model->writable_status_id = 0;

            if (model->backend_died_id)
                g_signal_handler_disconnect (model->book,
                                 model->backend_died_id);
            model->backend_died_id = 0;

            g_object_unref (model->book);
        }
        model->book = E_BOOK(g_value_get_object (value));
        if (model->book) {
            model->first_get_view = TRUE;
            g_object_ref (model->book);
            if (model->get_view_idle == 0)
                model->get_view_idle = g_idle_add((GSourceFunc)get_view, model);
            g_signal_connect (model->book,
                      "writable_status",
                      G_CALLBACK (writable_status), model);
            g_signal_connect (model->book,
                      "backend_died",
                      G_CALLBACK (backend_died), model);
        }
        break;
    case PROP_QUERY:
        if (model->query)
            g_free(model->query);
        model->query = g_strdup(g_value_get_string (value));
        if (model->get_view_idle == 0)
            model->get_view_idle = g_idle_add((GSourceFunc)get_view, model);
        break;
    case PROP_EDITABLE:
        model->editable = g_value_get_boolean (value);
        model->editable_set = TRUE;
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
        break;
    }
}

static void
e_addressbook_model_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
    EAddressbookModel *e_addressbook_model;

    e_addressbook_model = E_ADDRESSBOOK_MODEL (object);

    switch (prop_id) {
    case PROP_BOOK:
        g_value_set_object (value, e_addressbook_model->book);
        break;
    case PROP_QUERY:
        g_value_set_string (value, g_strdup(e_addressbook_model->query));
        break;
    case PROP_EDITABLE:
        g_value_set_boolean (value, e_addressbook_model->editable);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
        break;
    }
}

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

    if (!type) {
        static const GTypeInfo info =  {
            sizeof (EAddressbookModelClass),
            NULL,           /* base_init */
            NULL,           /* base_finalize */
            (GClassInitFunc) e_addressbook_model_class_init,
            NULL,           /* class_finalize */
            NULL,           /* class_data */
            sizeof (EAddressbookModel),
            0,             /* n_preallocs */
            (GInstanceInitFunc) e_addressbook_model_init,
        };

        type = g_type_register_static (PARENT_TYPE, "EAddressbookModel", &info, 0);
    }

    return type;
}

EAddressbookModel*
e_addressbook_model_new (void)
{
    EAddressbookModel *et;

    et = g_object_new (E_TYPE_ADDRESSBOOK_MODEL, NULL);
    
    return et;
}

void   e_addressbook_model_stop    (EAddressbookModel *model)
{
    remove_book_view(model);
    g_signal_emit (model,
               e_addressbook_model_signals [STOP_STATE_CHANGED], 0);
    g_signal_emit (model,
               e_addressbook_model_signals [STATUS_MESSAGE], 0,
               "Search Interrupted.");
}

gboolean
e_addressbook_model_can_stop (EAddressbookModel *model)
{
    return model->search_in_progress;
}

void
e_addressbook_model_force_folder_bar_message (EAddressbookModel *model)
{
    update_folder_bar_message (model);
}

int
e_addressbook_model_card_count (EAddressbookModel *model)
{
    return model->data_count;
}

ECard *
e_addressbook_model_card_at (EAddressbookModel *model, int index)
{
    return model->data[index];
}

gboolean
e_addressbook_model_editable (EAddressbookModel *model)
{
    return model->editable;
}

EBook *
e_addressbook_model_get_ebook (EAddressbookModel *model)
{
    return model->book;
}