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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * 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/>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <string.h>

#include <glib/gi18n.h>
#include "e-addressbook-reflow-adapter.h"
#include "e-addressbook-model.h"
#include "eab-gui-util.h"

#include "e-minicard.h"
#include <e-util/e-util.h>
#include "addressbook/printing/e-contact-print.h"

struct _EAddressbookReflowAdapterPrivate {
    EAddressbookModel *model;

    gboolean loading;

    gint create_contact_id, remove_contact_id, modify_contact_id, model_changed_id;
    gint search_started_id, search_result_id;
};

#define PARENT_TYPE e_reflow_model_get_type()
static EReflowModel *parent_class;

#define d(x)

enum {
    PROP_0,
    PROP_CLIENT,
    PROP_QUERY,
    PROP_EDITABLE,
    PROP_MODEL
};

enum {
    DRAG_BEGIN,
    OPEN_CONTACT,
    LAST_SIGNAL
};

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

static void
unlink_model (EAddressbookReflowAdapter *adapter)
{
    EAddressbookReflowAdapterPrivate *priv = adapter->priv;

    if (priv->model && priv->create_contact_id)
        g_signal_handler_disconnect (priv->model,
                         priv->create_contact_id);
    if (priv->model && priv->remove_contact_id)
        g_signal_handler_disconnect (priv->model,
                         priv->remove_contact_id);
    if (priv->model && priv->modify_contact_id)
        g_signal_handler_disconnect (priv->model,
                         priv->modify_contact_id);
    if (priv->model && priv->model_changed_id)
        g_signal_handler_disconnect (priv->model,
                         priv->model_changed_id);
    if (priv->model && priv->search_started_id)
        g_signal_handler_disconnect (priv->model,
                         priv->search_started_id);
    if (priv->model && priv->search_result_id)
        g_signal_handler_disconnect (priv->model,
                         priv->search_result_id);

    priv->create_contact_id = 0;
    priv->remove_contact_id = 0;
    priv->modify_contact_id = 0;
    priv->model_changed_id = 0;
    priv->search_started_id = 0;
    priv->search_result_id = 0;

    if (priv->model)
        g_object_unref (priv->model);

    priv->model = NULL;
}

static gint
text_height (PangoLayout *layout, const gchar *text)
{
    gint height;

    pango_layout_set_text (layout, text, -1);

    pango_layout_get_pixel_size (layout, NULL, &height);

    return height;
}

static void
addressbook_dispose (GObject *object)
{
    EAddressbookReflowAdapter *adapter = E_ADDRESSBOOK_REFLOW_ADAPTER (object);

    unlink_model (adapter);
}

static void
addressbook_set_width (EReflowModel *erm, gint width)
{
}

/* This function returns the number of items in our EReflowModel. */
static gint
addressbook_count (EReflowModel *erm)
{
    EAddressbookReflowAdapter *adapter = E_ADDRESSBOOK_REFLOW_ADAPTER (erm);
    EAddressbookReflowAdapterPrivate *priv = adapter->priv;

    return e_addressbook_model_contact_count (priv->model);
}

/* This function returns the height of the minicontact in question */
static gint
addressbook_height (EReflowModel *erm, gint i, GnomeCanvasGroup *parent)
{
    EAddressbookReflowAdapter *adapter = E_ADDRESSBOOK_REFLOW_ADAPTER (erm);
    EAddressbookReflowAdapterPrivate *priv = adapter->priv;
    EContactField field;
    gint count = 0;
    gchar *string;
    EContact *contact = (EContact*) e_addressbook_model_contact_at (priv->model, i);
    PangoLayout *layout;
    gint height;

    layout = gtk_widget_create_pango_layout (
        GTK_WIDGET (GNOME_CANVAS_ITEM (parent)->canvas), "");

    string = e_contact_get (contact, E_CONTACT_FILE_AS);
    height = text_height (layout, string ? string : "") + 10.0;
    g_free (string);

    for (field = E_CONTACT_FULL_NAME;
         field != E_CONTACT_LAST_SIMPLE_STRING && count < 5; field++) {

        if (field == E_CONTACT_FAMILY_NAME || field == E_CONTACT_GIVEN_NAME)
            continue;

        string = e_contact_get (contact, field);
        if (string && *string) {
            gint this_height;
            gint field_text_height;

            this_height = text_height (layout, e_contact_pretty_name (field));

            field_text_height = text_height (layout, string);
            if (this_height < field_text_height)
                this_height = field_text_height;

            this_height += 3;

            height += this_height;
            count++;
        }
        g_free (string);
    }
    height += 2;

    g_object_unref (layout);

    return height;
}

static GHashTable *
addressbook_create_cmp_cache (EReflowModel *erm)
{
    EAddressbookReflowAdapter *adapter = E_ADDRESSBOOK_REFLOW_ADAPTER (erm);
    EAddressbookReflowAdapterPrivate *priv = adapter->priv;
    GHashTable *cmp_cache;
    gint ii, count;

    count = e_reflow_model_count (erm);

    if (priv->loading || count <= 0)
        return NULL;

    cmp_cache = g_hash_table_new_full (g_direct_hash, g_direct_equal, NULL, g_free);

    for (ii = 0; ii < count; ii++) {
        EContact *contact;

        contact  = (EContact *)
            e_addressbook_model_contact_at (priv->model, ii);
        if (contact != NULL) {
            const gchar *file_as;

            file_as = e_contact_get_const (
                contact, E_CONTACT_FILE_AS);
            if (file_as != NULL)
                g_hash_table_insert (
                    cmp_cache, GINT_TO_POINTER (ii),
                    g_utf8_collate_key (file_as, -1));
        }
    }

    return cmp_cache;
}

static gint
addressbook_compare (EReflowModel *erm, gint n1, gint n2, GHashTable *cmp_cache)
{
    EAddressbookReflowAdapter *adapter = E_ADDRESSBOOK_REFLOW_ADAPTER (erm);
    EAddressbookReflowAdapterPrivate *priv = adapter->priv;
    EContact *contact1, *contact2;

    if (priv->loading) {
        return n1-n2;
    }
    else {
        contact1 = (EContact*) e_addressbook_model_contact_at (priv->model, n1);
        contact2 = (EContact*) e_addressbook_model_contact_at (priv->model, n2);

        if (contact1 && contact2) {
            const gchar *file_as1, *file_as2;
            const gchar *uid1, *uid2;

            if (cmp_cache) {
                file_as1 = g_hash_table_lookup (cmp_cache, GINT_TO_POINTER (n1));
                file_as2 = g_hash_table_lookup (cmp_cache, GINT_TO_POINTER (n2));
                if (file_as1 && file_as2)
                    return strcmp (file_as1, file_as2);
            } else {
                file_as1 = e_contact_get_const (contact1, E_CONTACT_FILE_AS);
                file_as2 = e_contact_get_const (contact2, E_CONTACT_FILE_AS);
                if (file_as1 && file_as2)
                    return g_utf8_collate (file_as1, file_as2);
            }
            if (file_as1)
                return -1;
            if (file_as2)
                return 1;
            uid1 = e_contact_get_const (contact1, E_CONTACT_UID);
            uid2 = e_contact_get_const (contact2, E_CONTACT_UID);
            if (uid1 && uid2)
                return strcmp (uid1, uid2);
            if (uid1)
                return -1;
            if (uid2)
                return 1;
        }
        if (contact1)
            return -1;
        if (contact2)
            return 1;
        return 0;
    }
}

static gint
adapter_drag_begin (EMinicard *card,
                    GdkEvent *event,
                    EAddressbookReflowAdapter *adapter)
{
    gint ret_val = 0;

    g_signal_emit (adapter,
               signals[DRAG_BEGIN], 0,
               event, &ret_val);

    return ret_val;
}

static void
adapter_open_contact (EMinicard *card,
                      EContact *contact,
                      EAddressbookReflowAdapter *adapter)
{
    g_signal_emit (adapter, signals[OPEN_CONTACT], 0, contact);
}

static GnomeCanvasItem *
addressbook_incarnate (EReflowModel *erm, gint i, GnomeCanvasGroup *parent)
{
    EAddressbookReflowAdapter *adapter = E_ADDRESSBOOK_REFLOW_ADAPTER (erm);
    EAddressbookReflowAdapterPrivate *priv = adapter->priv;
    GnomeCanvasItem *item;

    item = gnome_canvas_item_new (parent,
                     e_minicard_get_type (),
                     "contact", e_addressbook_model_contact_at (priv->model, i),
                     "editable", e_addressbook_model_get_editable (priv->model),
                     NULL);

#if 0
    g_signal_connect (item, "selected",
              G_CALLBACK (card_selected), 0, emvm);
#endif

    g_signal_connect (item, "drag_begin",
              G_CALLBACK (adapter_drag_begin), adapter);

    g_signal_connect (item, "open-contact",
              G_CALLBACK (adapter_open_contact), adapter);

    return item;
}

static void
addressbook_reincarnate (EReflowModel *erm, gint i, GnomeCanvasItem *item)
{
    EAddressbookReflowAdapter *adapter = E_ADDRESSBOOK_REFLOW_ADAPTER (erm);
    EAddressbookReflowAdapterPrivate *priv = adapter->priv;

    gnome_canvas_item_set (item,
                  "contact", e_addressbook_model_contact_at (priv->model, i),
                  NULL);
}

static void
create_contact (EAddressbookModel *model,
        gint index, gint count,
        EAddressbookReflowAdapter *adapter)
{
    e_reflow_model_items_inserted (E_REFLOW_MODEL (adapter),
                       index,
                       count);
}

static void
remove_contacts (EAddressbookModel *model,
        gpointer data,
        EAddressbookReflowAdapter *adapter)
{
    GArray *indices = (GArray *) data;
    gint count = indices->len;

    if (count == 1)
        e_reflow_model_item_removed (
            E_REFLOW_MODEL (adapter),
            g_array_index (indices, gint, 0));
    else
        e_reflow_model_changed (E_REFLOW_MODEL (adapter));

}

static void
modify_contact (EAddressbookModel *model,
        gint index,
        EAddressbookReflowAdapter *adapter)
{
    e_reflow_model_item_changed (E_REFLOW_MODEL (adapter), index);
}

static void
model_changed (EAddressbookModel *model,
           EAddressbookReflowAdapter *adapter)
{
    e_reflow_model_changed (E_REFLOW_MODEL (adapter));
}

static void
search_started (EAddressbookModel *model,
        EAddressbookReflowAdapter *adapter)
{
    EAddressbookReflowAdapterPrivate *priv = adapter->priv;

    priv->loading = TRUE;
}

static void
search_result (EAddressbookModel *model,
           const GError *error,
           EAddressbookReflowAdapter *adapter)
{
    EAddressbookReflowAdapterPrivate *priv = adapter->priv;

    priv->loading = FALSE;

    e_reflow_model_comparison_changed (E_REFLOW_MODEL (adapter));
}

static void
addressbook_set_property (GObject *object,
                          guint prop_id,
                          const GValue *value,
                          GParamSpec *pspec)
{
    EAddressbookReflowAdapter *adapter = E_ADDRESSBOOK_REFLOW_ADAPTER (object);
    EAddressbookReflowAdapterPrivate *priv = adapter->priv;

    switch (prop_id) {
    case PROP_CLIENT:
        g_object_set (priv->model,
                  "client", g_value_get_object (value),
                  NULL);
        break;
    case PROP_QUERY:
        g_object_set (priv->model,
                  "query", g_value_get_string (value),
                  NULL);
        break;
    case PROP_EDITABLE:
        g_object_set (priv->model,
                  "editable", g_value_get_boolean (value),
                  NULL);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
        break;
    }
}

static void
addressbook_get_property (GObject *object,
                          guint prop_id,
                          GValue *value,
                          GParamSpec *pspec)
{
    EAddressbookReflowAdapter *adapter = E_ADDRESSBOOK_REFLOW_ADAPTER (object);
    EAddressbookReflowAdapterPrivate *priv = adapter->priv;

    switch (prop_id) {
    case PROP_CLIENT: {
        g_object_get_property (G_OBJECT (priv->model),
                       "client", value);
        break;
    }
    case PROP_QUERY: {
        g_object_get_property (G_OBJECT (priv->model),
                       "query", value);
        break;
    }
    case PROP_EDITABLE: {
        g_object_get_property (G_OBJECT (priv->model),
                       "editable", value);
        break;
    }
    case PROP_MODEL:
        g_value_set_object (value, priv->model);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
        break;
    }
}

static void
e_addressbook_reflow_adapter_class_init (GObjectClass *object_class)
{
    EReflowModelClass *model_class = (EReflowModelClass *) object_class;

    parent_class = g_type_class_peek_parent (object_class);

    object_class->set_property = addressbook_set_property;
    object_class->get_property = addressbook_get_property;
    object_class->dispose = addressbook_dispose;

    g_object_class_install_property (object_class, PROP_CLIENT,
                     g_param_spec_object ("client",
                                  "EBookClient",
                                  NULL,
                                  E_TYPE_BOOK_CLIENT,
                                  G_PARAM_READWRITE));

    g_object_class_install_property (object_class, PROP_QUERY,
                     g_param_spec_string ("query",
                                  "Query",
                                  NULL,
                                  NULL,
                                  G_PARAM_READWRITE));

    g_object_class_install_property (object_class, PROP_EDITABLE,
                     g_param_spec_boolean ("editable",
                                   "Editable",
                                   NULL,
                                   FALSE,
                                   G_PARAM_READWRITE));

    g_object_class_install_property (object_class, PROP_MODEL,
                     g_param_spec_object ("model",
                                  "Model",
                                  NULL,
                                  E_TYPE_ADDRESSBOOK_MODEL,
                                  G_PARAM_READABLE));

    signals[DRAG_BEGIN] =
        g_signal_new ("drag_begin",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (EAddressbookReflowAdapterClass, drag_begin),
                  NULL, NULL,
                  e_marshal_INT__POINTER,
                  G_TYPE_INT, 1, G_TYPE_POINTER);

    signals[OPEN_CONTACT] =
        g_signal_new ("open-contact",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (EAddressbookReflowAdapterClass, open_contact),
                  NULL, NULL,
                  g_cclosure_marshal_VOID__OBJECT,
                  G_TYPE_NONE, 1,
                  E_TYPE_CONTACT);

    model_class->set_width = addressbook_set_width;
    model_class->count = addressbook_count;
    model_class->height = addressbook_height;
    model_class->create_cmp_cache = addressbook_create_cmp_cache;
    model_class->compare = addressbook_compare;
    model_class->incarnate = addressbook_incarnate;
    model_class->reincarnate = addressbook_reincarnate;
}

static void
e_addressbook_reflow_adapter_init (GObject *object)
{
    EAddressbookReflowAdapter *adapter = E_ADDRESSBOOK_REFLOW_ADAPTER (object);
    EAddressbookReflowAdapterPrivate *priv;

    priv = adapter->priv = g_new0 (EAddressbookReflowAdapterPrivate, 1);

    priv->loading = FALSE;
    priv->create_contact_id = 0;
    priv->remove_contact_id = 0;
    priv->modify_contact_id = 0;
    priv->model_changed_id = 0;
    priv->search_started_id = 0;
    priv->search_result_id = 0;
}

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

    if (!type) {
        static const GTypeInfo info =  {
            sizeof (EAddressbookReflowAdapterClass),
            NULL,           /* base_init */
            NULL,           /* base_finalize */
            (GClassInitFunc) e_addressbook_reflow_adapter_class_init,
            NULL,           /* class_finalize */
            NULL,           /* class_data */
            sizeof (EAddressbookReflowAdapter),
            0,             /* n_preallocs */
            (GInstanceInitFunc) e_addressbook_reflow_adapter_init,
        };

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

    return type;
}

void
e_addressbook_reflow_adapter_construct (EAddressbookReflowAdapter *adapter,
                    EAddressbookModel *model)
{
    EAddressbookReflowAdapterPrivate *priv = adapter->priv;

    priv->model = model;
    g_object_ref (priv->model);

    priv->create_contact_id = g_signal_connect (priv->model,
                        "contact_added",
                        G_CALLBACK (create_contact),
                        adapter);
    priv->remove_contact_id = g_signal_connect (priv->model,
                        "contacts_removed",
                        G_CALLBACK (remove_contacts),
                        adapter);
    priv->modify_contact_id = g_signal_connect (priv->model,
                        "contact_changed",
                        G_CALLBACK (modify_contact),
                        adapter);
    priv->model_changed_id = g_signal_connect (priv->model,
                          "model_changed",
                          G_CALLBACK (model_changed),
                          adapter);
    priv->search_started_id = g_signal_connect (priv->model,
                           "search_started",
                           G_CALLBACK (search_started),
                           adapter);
    priv->search_result_id = g_signal_connect (priv->model,
                          "search_result",
                          G_CALLBACK (search_result),
                          adapter);
}

EReflowModel *
e_addressbook_reflow_adapter_new (EAddressbookModel *model)
{
    EAddressbookReflowAdapter *et;

    et = g_object_new (E_TYPE_ADDRESSBOOK_REFLOW_ADAPTER, NULL);

    e_addressbook_reflow_adapter_construct (et, model);

    return E_REFLOW_MODEL (et);
}


EContact *
e_addressbook_reflow_adapter_get_contact (EAddressbookReflowAdapter *adapter,
                      gint index)
{
    EAddressbookReflowAdapterPrivate *priv = adapter->priv;

    return e_addressbook_model_get_contact (priv->model, index);
}