path: root/addressbook/gui/widgets/e-addressbook-treeview-adapter.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */

#include <config.h>
#include "e-addressbook-model.h"
#include "e-addressbook-treeview-adapter.h"
#include "e-card-merging.h"
#include "eab-gui-util.h"
#include <gtk/gtktreednd.h>
#include <libxml/tree.h>
#include <libxml/parser.h>
#include <libxml/xmlmemory.h>

struct _EAddressbookTreeViewAdapterPrivate {
    EAddressbookModel *model;

    gint stamp;

    ECardSimple **simples;
    int count;

    int create_card_id, remove_card_id, modify_card_id, model_changed_id;
};

#define PARENT_TYPE G_TYPE_OBJECT
GObjectClass *parent_class;

#define COLS (E_CARD_SIMPLE_FIELD_LAST)

static void
unlink_model(EAddressbookTreeViewAdapter *adapter)
{
    EAddressbookTreeViewAdapterPrivate *priv = adapter->priv;
    int i;

    g_signal_handler_disconnect (priv->model,
                     priv->create_card_id);
    g_signal_handler_disconnect (priv->model,
                     priv->remove_card_id);
    g_signal_handler_disconnect (priv->model,
                     priv->modify_card_id);
    g_signal_handler_disconnect (priv->model,
                     priv->model_changed_id);

    priv->create_card_id = 0;
    priv->remove_card_id = 0;
    priv->modify_card_id = 0;
    priv->model_changed_id = 0;

    /* free up the existing mapping if there is one */
    if (priv->simples) {
        for (i = 0; i < priv->count; i ++)
            g_object_unref (priv->simples[i]);
        g_free (priv->simples);
        priv->simples = NULL;
    }

    g_object_unref (priv->model);

    priv->model = NULL;
}

static void
build_simple_mapping(EAddressbookTreeViewAdapter *adapter)
{
    EAddressbookTreeViewAdapterPrivate *priv = adapter->priv;
    int i;

    /* free up the existing mapping if there is one */
    if (priv->simples) {
        for (i = 0; i < priv->count; i ++)
            g_object_unref (priv->simples[i]);
        g_free (priv->simples);
    }

    /* build up our mapping to ECardSimple*'s */
    priv->count = e_addressbook_model_card_count (priv->model);
    priv->simples = g_new (ECardSimple*, priv->count);
    for (i = 0; i < priv->count; i ++) {
        priv->simples[i] = e_card_simple_new (e_addressbook_model_card_at (priv->model, i));
        g_object_ref (priv->simples[i]);
    }
}

static void
addressbook_destroy(GtkObject *object)
{
    EAddressbookTreeViewAdapter *adapter = E_ADDRESSBOOK_TREEVIEW_ADAPTER(object);

    unlink_model(adapter);

    g_free (adapter->priv);
    adapter->priv = NULL;

    (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}

#if 0
static void
addressbook_set_value_at (ETableModel *etc, int col, int row, const void *val)
{
    EAddressbookTreeViewAdapter *adapter = E_ADDRESSBOOK_TABLE_ADAPTER(etc);
    EAddressbookTableAdapterPrivate *priv = adapter->priv;
    if (e_addressbook_model_editable (priv->model)) {
        ECard *card;

        if ( col >= COLS|| row >= e_addressbook_model_card_count (priv->model) )
            return;

        e_table_model_pre_change(etc);

        e_card_simple_set(priv->simples[row],
                  col,
                  val);
        g_object_get(priv->simples[row],
                 "card", &card,
                 NULL);

        e_card_merging_book_commit_card(e_addressbook_model_get_ebook(priv->model),
                        card, card_modified_cb, NULL);

        /* XXX do we need this?  shouldn't the commit_card generate a changed signal? */
        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)
{
    EAddressbookTableAdapter *adapter = E_ADDRESSBOOK_TABLE_ADAPTER(etc);
    EAddressbookTableAdapterPrivate *priv = adapter->priv;
    ECard *card;

    if (row >= 0 && row < e_addressbook_model_card_count (priv->model))
        card = e_addressbook_model_card_at (priv->model, row);
    else
        card = NULL;

    if (!e_addressbook_model_editable(priv->model))
        return FALSE;
    else if (card && e_card_evolution_list (card))
        /* we only allow editing of the name and file as for
                   lists */
        return col == E_CARD_SIMPLE_FIELD_FULL_NAME || col == E_CARD_SIMPLE_FIELD_FILE_AS; 
    else
        return col < E_CARD_SIMPLE_FIELD_LAST_SIMPLE_STRING;
}

static void
addressbook_append_row (ETableModel *etm, ETableModel *source, gint row)
{
    EAddressbookTableAdapter *adapter = E_ADDRESSBOOK_TABLE_ADAPTER(etm);
    EAddressbookTableAdapterPrivate *priv = adapter->priv;
    ECard *card;
    ECardSimple *simple;
    int col;

    card = e_card_new("");
    simple = e_card_simple_new(card);

    for (col = 0; col < E_CARD_SIMPLE_FIELD_LAST_SIMPLE_STRING; col++) {
        const void *val = e_table_model_value_at(source, col, row);
        e_card_simple_set(simple, col, val);
    }
    e_card_simple_sync_card(simple);
    e_card_merging_book_add_card (e_addressbook_model_get_ebook (priv->model), card, NULL, NULL);
    g_object_unref (simple);
    g_object_unref (card);
}
#endif

static void
e_addressbook_treeview_adapter_class_init (GtkObjectClass *object_class)
{
    parent_class = g_type_class_peek_parent (object_class);

    object_class->destroy = addressbook_destroy;
}

static void
e_addressbook_treeview_adapter_init (GtkObject *object)
{
    EAddressbookTreeViewAdapter *adapter = E_ADDRESSBOOK_TREEVIEW_ADAPTER(object);
    EAddressbookTreeViewAdapterPrivate *priv;

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

    priv->create_card_id = 0;
    priv->remove_card_id = 0;
    priv->modify_card_id = 0;
    priv->model_changed_id = 0;
    priv->simples = NULL;
    priv->count = 0;
}

static void
get_iter (EAddressbookTreeViewAdapter *adapter, gint index, GtkTreeIter *iter)
{
    EAddressbookTreeViewAdapterPrivate *priv = adapter->priv;

    iter->stamp = priv->stamp;
    iter->user_data = GINT_TO_POINTER (index);
}

static void
create_card (EAddressbookModel *model,
         gint index, gint count,
         EAddressbookTreeViewAdapter *adapter)
{
    EAddressbookTreeViewAdapterPrivate *priv = adapter->priv;
    int i;

    priv->count += count;
    priv->simples = g_renew(ECardSimple *, priv->simples, priv->count);
    memmove (priv->simples + index + count, priv->simples + index, (priv->count - index - count) * sizeof (ECardSimple *));

    for (i = 0; i < count; i ++) {
        GtkTreeIter iter;
        GtkTreePath *path;

        priv->simples[index + i] = e_card_simple_new (e_addressbook_model_card_at (priv->model, index + i));

        get_iter (adapter, index + i, &iter);
        path = gtk_tree_model_get_path (GTK_TREE_MODEL (adapter), &iter);

        gtk_tree_model_row_inserted (GTK_TREE_MODEL (adapter), path, &iter);
        gtk_tree_model_row_changed (GTK_TREE_MODEL (adapter), path, &iter);

        gtk_tree_path_free (path);
    }
}

static void
remove_card (EAddressbookModel *model,
         gint index,
         EAddressbookTreeViewAdapter *adapter)
{
    EAddressbookTreeViewAdapterPrivate *priv = adapter->priv;
    GtkTreeIter iter;
    GtkTreePath *path;

    g_object_unref (priv->simples[index]);
    memmove (priv->simples + index, priv->simples + index + 1, (priv->count - index - 1) * sizeof (ECardSimple *));
    priv->count --;
    get_iter (adapter, index, &iter);
    path = gtk_tree_model_get_path (GTK_TREE_MODEL (adapter), &iter);

    gtk_tree_model_row_deleted (GTK_TREE_MODEL (adapter), path);

    gtk_tree_path_free (path);
}

static void
modify_card (EAddressbookModel *model,
         gint index,
         EAddressbookTreeViewAdapter *adapter)
{
    EAddressbookTreeViewAdapterPrivate *priv = adapter->priv;
    GtkTreeIter iter;
    GtkTreePath *path;

    g_object_unref (priv->simples[index]);
    priv->simples[index] = e_card_simple_new (e_addressbook_model_card_at (priv->model, index));

    get_iter (adapter, index, &iter);
    path = gtk_tree_model_get_path (GTK_TREE_MODEL (adapter), &iter);

    gtk_tree_model_row_changed (GTK_TREE_MODEL (adapter), path, &iter);

    gtk_tree_path_free (path);
}

static void
model_changed (EAddressbookModel *model,
           EAddressbookTreeViewAdapter *adapter)
{
    int i;

    /* there has *got* to be an easier/faster way to do this... */
    for (i = 0; i < adapter->priv->count; i++) {
        remove_card (model, i, adapter);
    }

    build_simple_mapping (adapter);

    if (adapter->priv->count) {
        printf ("AIIEEEEEE\n");
    }

    /* XXX this isn't right either, we need to add the new cards */
}

static GtkTreeModelFlags
adapter_get_flags (GtkTreeModel *tree_model)
{
  g_return_val_if_fail (E_IS_ADDRESSBOOK_TREEVIEW_ADAPTER (tree_model), 0);

  return GTK_TREE_MODEL_LIST_ONLY;
}

static gint
adapter_get_n_columns (GtkTreeModel *tree_model)
{
  g_return_val_if_fail (E_IS_ADDRESSBOOK_TREEVIEW_ADAPTER (tree_model), 0);

  return COLS;
}

static GType
adapter_get_column_type (GtkTreeModel *tree_model,
             gint          index)
{
  g_return_val_if_fail (E_IS_ADDRESSBOOK_TREEVIEW_ADAPTER (tree_model), G_TYPE_INVALID);
  g_return_val_if_fail (index < COLS && index >= 0, G_TYPE_INVALID);
  
  return G_TYPE_STRING;
}

static gboolean
adapter_get_iter (GtkTreeModel *tree_model,
          GtkTreeIter  *iter,
          GtkTreePath  *path)
{
    EAddressbookTreeViewAdapter *adapter;
    GSList *list;
    gint i;

    g_return_val_if_fail (E_IS_ADDRESSBOOK_TREEVIEW_ADAPTER (tree_model), FALSE);
    g_return_val_if_fail (gtk_tree_path_get_depth (path) > 0, FALSE);

    adapter = E_ADDRESSBOOK_TREEVIEW_ADAPTER (tree_model);

    i = gtk_tree_path_get_indices (path)[0];

    if (i >= adapter->priv->count)
        return FALSE;

    iter->stamp = adapter->priv->stamp;
    iter->user_data = GINT_TO_POINTER (i);

    return TRUE;
}

static GtkTreePath *
adapter_get_path (GtkTreeModel *tree_model,
          GtkTreeIter  *iter)
{
    EAddressbookTreeViewAdapter *adapter = E_ADDRESSBOOK_TREEVIEW_ADAPTER (tree_model);
    GtkTreePath *retval;

    g_return_val_if_fail (E_IS_ADDRESSBOOK_TREEVIEW_ADAPTER (tree_model), NULL);
    g_return_val_if_fail (iter->stamp == adapter->priv->stamp, NULL);


    if (GPOINTER_TO_INT (iter->user_data) >= adapter->priv->count)
        return NULL;

    retval = gtk_tree_path_new ();
    gtk_tree_path_append_index (retval, GPOINTER_TO_INT (iter->user_data));
    return retval;
}

static void
adapter_get_value (GtkTreeModel *tree_model,
           GtkTreeIter  *iter,
           gint          column,
           GValue       *value)
{
    EAddressbookTreeViewAdapter *adapter = E_ADDRESSBOOK_TREEVIEW_ADAPTER (tree_model);
    ECardSimple *simple;
    gint tmp_column = column;
    const char *v;

    g_return_if_fail (E_IS_ADDRESSBOOK_TREEVIEW_ADAPTER (tree_model));
    g_return_if_fail (column < COLS);
    g_return_if_fail (adapter->priv->stamp == iter->stamp);

    simple = adapter->priv->simples [ GPOINTER_TO_INT (iter->user_data) ];

    v = e_card_simple_get_const(simple, column);

    g_value_init (value, G_TYPE_STRING);
    g_value_set_string (value, (v ? v : ""));
}

static gboolean
adapter_iter_next (GtkTreeModel  *tree_model,
           GtkTreeIter   *iter)
{
    EAddressbookTreeViewAdapter *adapter;

    g_return_val_if_fail (E_IS_ADDRESSBOOK_TREEVIEW_ADAPTER (tree_model), FALSE);
    g_return_val_if_fail (E_ADDRESSBOOK_TREEVIEW_ADAPTER (tree_model)->priv->stamp == iter->stamp, FALSE);

    adapter = E_ADDRESSBOOK_TREEVIEW_ADAPTER (tree_model);

    iter->user_data = GINT_TO_POINTER (GPOINTER_TO_INT (iter->user_data) + 1);

    return (GPOINTER_TO_INT (iter->user_data) < adapter->priv->count);
}

static gboolean
adapter_iter_children (GtkTreeModel *tree_model,
               GtkTreeIter  *iter,
               GtkTreeIter  *parent)
{
    EAddressbookTreeViewAdapter *adapter = E_ADDRESSBOOK_TREEVIEW_ADAPTER (tree_model);

    /* this is a list, nodes have no children */
    if (parent)
        return FALSE;

    /* but if parent == NULL we return the list itself as children of the
     * "root"
     */
    if (adapter->priv->count) {
        iter->stamp = adapter->priv->stamp;
        iter->user_data = GINT_TO_POINTER (0);
        return TRUE;
    }
    else
        return FALSE;
}

static gboolean
adapter_iter_has_child (GtkTreeModel *tree_model,
            GtkTreeIter  *iter)
{
    return FALSE;
}

static gint
adapter_iter_n_children (GtkTreeModel *tree_model,
             GtkTreeIter  *iter)
{
    EAddressbookTreeViewAdapter *adapter = E_ADDRESSBOOK_TREEVIEW_ADAPTER (tree_model);

    g_return_val_if_fail (E_IS_ADDRESSBOOK_TREEVIEW_ADAPTER (tree_model), -1);
    if (iter == NULL)
        return adapter->priv->count;
            
    g_return_val_if_fail (adapter->priv->stamp == iter->stamp, -1);
    return 0;
}

static gboolean
adapter_iter_nth_child (GtkTreeModel *tree_model,
            GtkTreeIter  *iter,
            GtkTreeIter  *parent,
            gint          n)
{
    EAddressbookTreeViewAdapter *adapter = E_ADDRESSBOOK_TREEVIEW_ADAPTER (tree_model);

    g_return_val_if_fail (E_IS_ADDRESSBOOK_TREEVIEW_ADAPTER (tree_model), FALSE);

    if (parent)
        return FALSE;

    if (n < adapter->priv->count) {
        iter->stamp = adapter->priv->stamp;
        iter->user_data = GINT_TO_POINTER (n);
        return TRUE;
    }
    else
        return FALSE;
}

static gboolean
adapter_iter_parent (GtkTreeModel *tree_model,
             GtkTreeIter  *iter,
             GtkTreeIter  *child)
{
    return FALSE;
}

static void
adapter_tree_model_init (GtkTreeModelIface *iface)
{
    iface->get_flags = adapter_get_flags;
    iface->get_n_columns = adapter_get_n_columns;
    iface->get_column_type = adapter_get_column_type;
    iface->get_iter = adapter_get_iter;
    iface->get_path = adapter_get_path;
    iface->get_value = adapter_get_value;
    iface->iter_next = adapter_iter_next;
    iface->iter_children = adapter_iter_children;
    iface->iter_has_child = adapter_iter_has_child;
    iface->iter_n_children = adapter_iter_n_children;
    iface->iter_nth_child = adapter_iter_nth_child;
    iface->iter_parent = adapter_iter_parent;
}

static gboolean
adapter_drag_data_delete   (GtkTreeDragSource *drag_source,
                GtkTreePath       *path)
{
    g_return_val_if_fail (E_IS_ADDRESSBOOK_TREEVIEW_ADAPTER (drag_source), FALSE);

    return FALSE;
}

static gboolean
adapter_drag_data_get      (GtkTreeDragSource *drag_source,
                GtkTreePath       *path,
                GtkSelectionData  *selection_data)
{
    g_return_val_if_fail (E_IS_ADDRESSBOOK_TREEVIEW_ADAPTER (drag_source), FALSE);

    /* Note that we don't need to handle the GTK_TREE_MODEL_ROW
     * target, because the default handler does it for us, but
     * we do anyway for the convenience of someone maybe overriding the
     * default handler.
     */

    if (gtk_tree_set_row_drag_data (selection_data,
                    GTK_TREE_MODEL (drag_source),
                    path)) {
        return TRUE;
    }
    else {
        if (selection_data->target == gdk_atom_intern ("text/x-vcard", FALSE)) {
            printf ("HI THERE\n");
        }
    }

    return FALSE;
}

static void
adapter_drag_source_init (GtkTreeDragSourceIface *iface)
{
    iface->drag_data_delete = adapter_drag_data_delete;
    iface->drag_data_get = adapter_drag_data_get;
}

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

    if (!type) {
        static const GTypeInfo adapter_info =  {
            sizeof (EAddressbookTreeViewAdapterClass),
            NULL,           /* base_init */
            NULL,           /* base_finalize */
            (GClassInitFunc) e_addressbook_treeview_adapter_class_init,
            NULL,           /* class_finalize */
            NULL,           /* class_data */
            sizeof (EAddressbookTreeViewAdapter),
            0,             /* n_preallocs */
            (GInstanceInitFunc) e_addressbook_treeview_adapter_init,
        };

        static const GInterfaceInfo tree_model_info = {
            (GInterfaceInitFunc) adapter_tree_model_init,
            NULL,
            NULL
        };

        static const GInterfaceInfo drag_source_info = {
            (GInterfaceInitFunc) adapter_drag_source_init,
            NULL,
            NULL
        };

        type = g_type_register_static (PARENT_TYPE, "EAddressbookTreeViewAdapter", &adapter_info, 0);

        g_type_add_interface_static (type,
                         GTK_TYPE_TREE_MODEL,
                         &tree_model_info);

        g_type_add_interface_static (type,
                         GTK_TYPE_TREE_DRAG_SOURCE,
                         &drag_source_info);
    }

    return type;
}

void
e_addressbook_treeview_adapter_construct (EAddressbookTreeViewAdapter *adapter,
                      EAddressbookModel *model)
{
    EAddressbookTreeViewAdapterPrivate *priv = adapter->priv;

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

    priv->stamp = g_random_int ();

    priv->create_card_id = g_signal_connect(priv->model,
                        "card_added",
                        G_CALLBACK(create_card),
                        adapter);
    priv->remove_card_id = g_signal_connect(priv->model,
                        "card_removed",
                        G_CALLBACK(remove_card),
                        adapter);
    priv->modify_card_id = g_signal_connect(priv->model,
                        "card_changed",
                        G_CALLBACK(modify_card),
                        adapter);
    priv->model_changed_id = g_signal_connect(priv->model,
                          "model_changed",
                          G_CALLBACK(model_changed),
                          adapter);

    build_simple_mapping (adapter);
}

GtkTreeModel *
e_addressbook_treeview_adapter_new (EAddressbookModel *model)
{
    EAddressbookTreeViewAdapter *et;

    et = g_object_new(E_TYPE_ADDRESSBOOK_TREEVIEW_ADAPTER, NULL);

    e_addressbook_treeview_adapter_construct (et, model);

    return (GtkTreeModel*)et;
}