952 lines
31 KiB
C
952 lines
31 KiB
C
/***********************************************************
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*
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* custom-list.c
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*
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* A simple custom list model with sorting
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*
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* part of the Gtk+ tree view tutorial
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*
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* by Tim-Philipp Mueller < tim at centricular dot net >
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*
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***********************************************************/
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#include "custom-list.h"
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/* boring declarations of local functions */
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static void custom_list_init (CustomList *pkg_tree);
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static void custom_list_class_init (CustomListClass *klass);
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static void custom_list_tree_model_init (GtkTreeModelIface *iface);
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static void custom_list_finalize (GObject *object);
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static GtkTreeModelFlags custom_list_get_flags (GtkTreeModel *tree_model);
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static gint custom_list_get_n_columns (GtkTreeModel *tree_model);
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static GType custom_list_get_column_type (GtkTreeModel *tree_model,
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gint index);
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static gboolean custom_list_get_iter (GtkTreeModel *tree_model,
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GtkTreeIter *iter,
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GtkTreePath *path);
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static GtkTreePath *custom_list_get_path (GtkTreeModel *tree_model,
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GtkTreeIter *iter);
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static void custom_list_get_value (GtkTreeModel *tree_model,
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GtkTreeIter *iter,
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gint column,
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GValue *value);
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static gboolean custom_list_iter_next (GtkTreeModel *tree_model,
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GtkTreeIter *iter);
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static gboolean custom_list_iter_children (GtkTreeModel *tree_model,
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GtkTreeIter *iter,
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GtkTreeIter *parent);
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static gboolean custom_list_iter_has_child (GtkTreeModel *tree_model,
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GtkTreeIter *iter);
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static gint custom_list_iter_n_children (GtkTreeModel *tree_model,
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GtkTreeIter *iter);
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static gboolean custom_list_iter_nth_child (GtkTreeModel *tree_model,
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GtkTreeIter *iter,
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GtkTreeIter *parent,
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gint n);
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static gboolean custom_list_iter_parent (GtkTreeModel *tree_model,
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GtkTreeIter *iter,
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GtkTreeIter *child);
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/* -- GtkTreeSortable interface functions -- */
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static void custom_list_sortable_init (GtkTreeSortableIface *iface);
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static gboolean custom_list_sortable_get_sort_column_id (GtkTreeSortable *sortable,
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gint *sort_col_id,
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GtkSortType *order);
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static void custom_list_sortable_set_sort_column_id (GtkTreeSortable *sortable,
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gint sort_col_id,
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GtkSortType order);
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static void custom_list_sortable_set_sort_func (GtkTreeSortable *sortable,
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gint sort_col_id,
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GtkTreeIterCompareFunc sort_func,
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gpointer user_data,
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GtkDestroyNotify destroy_func);
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static void custom_list_sortable_set_default_sort_func (GtkTreeSortable *sortable,
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GtkTreeIterCompareFunc sort_func,
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gpointer user_data,
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GtkDestroyNotify destroy_func);
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static gboolean custom_list_sortable_has_default_sort_func (GtkTreeSortable *sortable);
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static void custom_list_resort (CustomList *custom_list);
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static GObjectClass *parent_class = NULL; /* GObject stuff - nothing to worry about */
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/*****************************************************************************
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*
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* custom_list_get_type: here we register our new type and its interfaces
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* with the type system. If you want to implement
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* additional interfaces, you will need to do it here.
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*
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*****************************************************************************/
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GType
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custom_list_get_type (void)
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{
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static GType custom_list_type = 0;
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if (custom_list_type)
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return custom_list_type;
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/* Some boilerplate type registration stuff */
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if (1)
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{
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static const GTypeInfo custom_list_info =
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{
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sizeof (CustomListClass),
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NULL, /* base_init */
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NULL, /* base_finalize */
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(GClassInitFunc) custom_list_class_init,
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NULL, /* class finalize */
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NULL, /* class_data */
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sizeof (CustomList),
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0, /* n_preallocs */
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(GInstanceInitFunc) custom_list_init
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};
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custom_list_type = g_type_register_static (G_TYPE_OBJECT, "CustomList",
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&custom_list_info, (GTypeFlags)0);
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}
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/* Here we register our GtkTreeModel interface with the type system */
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if (1)
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{
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static const GInterfaceInfo tree_model_info =
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{
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(GInterfaceInitFunc) custom_list_tree_model_init,
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NULL,
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NULL
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};
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g_type_add_interface_static (custom_list_type, GTK_TYPE_TREE_MODEL, &tree_model_info);
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}
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/* Add GtkTreeSortable interface */
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if (1)
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{
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static const GInterfaceInfo tree_sortable_info =
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{
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(GInterfaceInitFunc) custom_list_sortable_init,
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NULL,
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NULL
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};
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g_type_add_interface_static (custom_list_type, GTK_TYPE_TREE_SORTABLE, &tree_sortable_info);
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}
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return custom_list_type;
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}
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/*****************************************************************************
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*
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* custom_list_class_init: more boilerplate GObject/GType stuff.
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* Init callback for the type system,
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* called once when our new class is created.
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*
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*****************************************************************************/
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static void
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custom_list_class_init (CustomListClass *klass)
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{
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GObjectClass *object_class;
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parent_class = (GObjectClass*) g_type_class_peek_parent (klass);
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object_class = (GObjectClass*) klass;
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object_class->finalize = custom_list_finalize;
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}
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/*****************************************************************************
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*
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* custom_list_tree_model_init: init callback for the interface registration
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* in custom_list_get_type. Here we override
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* the GtkTreeModel interface functions that
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* we implement.
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*
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*****************************************************************************/
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static void
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custom_list_tree_model_init (GtkTreeModelIface *iface)
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{
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iface->get_flags = custom_list_get_flags;
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iface->get_n_columns = custom_list_get_n_columns;
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iface->get_column_type = custom_list_get_column_type;
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iface->get_iter = custom_list_get_iter;
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iface->get_path = custom_list_get_path;
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iface->get_value = custom_list_get_value;
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iface->iter_next = custom_list_iter_next;
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iface->iter_children = custom_list_iter_children;
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iface->iter_has_child = custom_list_iter_has_child;
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iface->iter_n_children = custom_list_iter_n_children;
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iface->iter_nth_child = custom_list_iter_nth_child;
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iface->iter_parent = custom_list_iter_parent;
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}
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/*****************************************************************************
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*
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* custom_list_sortable_init: init callback for the interface registration
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* in custom_list_get_type. Here we override
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* the GtkTreeSortable interface functions that
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* we implement.
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*
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*****************************************************************************/
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static void
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custom_list_sortable_init (GtkTreeSortableIface *iface)
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{
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iface->get_sort_column_id = custom_list_sortable_get_sort_column_id;
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iface->set_sort_column_id = custom_list_sortable_set_sort_column_id;
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iface->set_sort_func = custom_list_sortable_set_sort_func; /* NOT SUPPORTED */
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iface->set_default_sort_func = custom_list_sortable_set_default_sort_func; /* NOT SUPPORTED */
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iface->has_default_sort_func = custom_list_sortable_has_default_sort_func; /* NOT SUPPORTED */
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}
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/*****************************************************************************
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*
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* custom_list_init: this is called everytime a new custom list object
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* instance is created (we do that in custom_list_new).
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* Initialise your list structure's fields here.
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*
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*****************************************************************************/
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static void
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custom_list_init (CustomList *custom_list)
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{
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custom_list->n_columns = CUSTOM_LIST_N_COLUMNS;
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custom_list->column_types[0] = G_TYPE_POINTER; /* CUSTOM_LIST_COL_RECORD */
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custom_list->column_types[1] = G_TYPE_STRING; /* CUSTOM_LIST_COL_NAME */
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custom_list->column_types[2] = G_TYPE_UINT; /* CUSTOM_LIST_COL_YEAR_BORN */
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g_assert ( CUSTOM_LIST_N_COLUMNS == 3 );
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custom_list->num_rows = 0;
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custom_list->rows = NULL;
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custom_list->stamp = g_random_int(); /* Random int to check whether iters belong to out model */
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custom_list->sort_id = SORT_ID_NONE;
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custom_list->sort_order = GTK_SORT_ASCENDING;
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}
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/*****************************************************************************
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*
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* custom_list_finalize: this is called just before a custom list is
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* destroyed. Free dynamically allocated memory here.
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*
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*****************************************************************************/
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static void
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custom_list_finalize (GObject *object)
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{
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/* CustomList *custom_list = CUSTOM_LIST(object); */
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/* free all records and free all memory used by the list */
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#warning IMPLEMENT
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/* must chain up - finalize parent */
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(* parent_class->finalize) (object);
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}
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/*****************************************************************************
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*
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* custom_list_get_flags: tells the rest of the world whether our tree model
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* has any special characteristics. In our case,
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* we have a list model (instead of a tree), and each
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* tree iter is valid as long as the row in question
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* exists, as it only contains a pointer to our struct.
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*
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*****************************************************************************/
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static GtkTreeModelFlags
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custom_list_get_flags (GtkTreeModel *tree_model)
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{
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g_return_val_if_fail (CUSTOM_IS_LIST(tree_model), (GtkTreeModelFlags)0);
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return (GTK_TREE_MODEL_LIST_ONLY | GTK_TREE_MODEL_ITERS_PERSIST);
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}
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/*****************************************************************************
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*
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* custom_list_get_n_columns: tells the rest of the world how many data
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* columns we export via the tree model interface
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*
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*****************************************************************************/
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static gint
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custom_list_get_n_columns (GtkTreeModel *tree_model)
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{
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g_return_val_if_fail (CUSTOM_IS_LIST(tree_model), 0);
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return CUSTOM_LIST(tree_model)->n_columns;
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}
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/*****************************************************************************
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*
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* custom_list_get_column_type: tells the rest of the world which type of
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* data an exported model column contains
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*
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*****************************************************************************/
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static GType
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custom_list_get_column_type (GtkTreeModel *tree_model,
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gint index)
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{
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g_return_val_if_fail (CUSTOM_IS_LIST(tree_model), G_TYPE_INVALID);
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g_return_val_if_fail (index < CUSTOM_LIST(tree_model)->n_columns && index >= 0, G_TYPE_INVALID);
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return CUSTOM_LIST(tree_model)->column_types[index];
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}
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/*****************************************************************************
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*
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* custom_list_get_iter: converts a tree path (physical position) into a
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* tree iter structure (the content of the iter
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* fields will only be used internally by our model).
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* We simply store a pointer to our CustomRecord
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* structure that represents that row in the tree iter.
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*
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*****************************************************************************/
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static gboolean
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custom_list_get_iter (GtkTreeModel *tree_model,
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GtkTreeIter *iter,
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GtkTreePath *path)
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{
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CustomList *custom_list;
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CustomRecord *record;
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gint *indices, n, depth;
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g_assert(CUSTOM_IS_LIST(tree_model));
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g_assert(path!=NULL);
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custom_list = CUSTOM_LIST(tree_model);
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indices = gtk_tree_path_get_indices(path);
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depth = gtk_tree_path_get_depth(path);
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/* we do not allow children */
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g_assert(depth == 1); /* depth 1 = top level; a list only has top level nodes and no children */
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n = indices[0]; /* the n-th top level row */
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if ( n >= custom_list->num_rows || n < 0 )
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return FALSE;
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record = custom_list->rows[n];
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g_assert(record != NULL);
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g_assert(record->pos == n);
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/* We simply store a pointer to our custom record in the iter */
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iter->stamp = custom_list->stamp;
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iter->user_data = record;
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iter->user_data2 = NULL; /* unused */
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iter->user_data3 = NULL; /* unused */
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return TRUE;
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}
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/*****************************************************************************
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*
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* custom_list_get_path: converts a tree iter into a tree path (ie. the
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* physical position of that row in the list).
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*
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*****************************************************************************/
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static GtkTreePath *
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custom_list_get_path (GtkTreeModel *tree_model,
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GtkTreeIter *iter)
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{
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GtkTreePath *path;
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CustomRecord *record;
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CustomList *custom_list;
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g_return_val_if_fail (CUSTOM_IS_LIST(tree_model), NULL);
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g_return_val_if_fail (iter != NULL, NULL);
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g_return_val_if_fail (iter->user_data != NULL, NULL);
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custom_list = CUSTOM_LIST(tree_model);
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record = (CustomRecord*) iter->user_data;
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path = gtk_tree_path_new();
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gtk_tree_path_append_index(path, record->pos);
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return path;
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}
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/*****************************************************************************
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*
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* custom_list_get_value: Returns a row's exported data columns
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* (_get_value is what gtk_tree_model_get uses)
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*
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*****************************************************************************/
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static void
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custom_list_get_value (GtkTreeModel *tree_model,
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GtkTreeIter *iter,
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gint column,
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GValue *value)
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{
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CustomRecord *record;
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CustomList *custom_list;
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g_return_if_fail (CUSTOM_IS_LIST (tree_model));
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g_return_if_fail (iter != NULL);
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g_return_if_fail (column < CUSTOM_LIST(tree_model)->n_columns);
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g_value_init (value, CUSTOM_LIST(tree_model)->column_types[column]);
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custom_list = CUSTOM_LIST(tree_model);
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record = (CustomRecord*) iter->user_data;
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g_return_if_fail ( record != NULL );
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if(record->pos >= custom_list->num_rows)
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g_return_if_reached();
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switch(column)
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{
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case CUSTOM_LIST_COL_RECORD:
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g_value_set_pointer(value, record);
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break;
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case CUSTOM_LIST_COL_NAME:
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g_value_set_string(value, record->name);
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break;
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case CUSTOM_LIST_COL_YEAR_BORN:
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g_value_set_uint(value, record->year_born);
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break;
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}
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}
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/*****************************************************************************
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*
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* custom_list_iter_next: Takes an iter structure and sets it to point
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* to the next row.
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*
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*****************************************************************************/
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static gboolean
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custom_list_iter_next (GtkTreeModel *tree_model,
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GtkTreeIter *iter)
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{
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CustomRecord *record, *nextrecord;
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CustomList *custom_list;
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g_return_val_if_fail (CUSTOM_IS_LIST (tree_model), FALSE);
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if (iter == NULL || iter->user_data == NULL)
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return FALSE;
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custom_list = CUSTOM_LIST(tree_model);
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record = (CustomRecord *) iter->user_data;
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/* Is this the last record in the list? */
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if ((record->pos + 1) >= custom_list->num_rows)
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return FALSE;
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nextrecord = custom_list->rows[(record->pos + 1)];
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g_assert ( nextrecord != NULL );
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g_assert ( nextrecord->pos == (record->pos + 1) );
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iter->stamp = custom_list->stamp;
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iter->user_data = nextrecord;
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return TRUE;
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}
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/*****************************************************************************
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*
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* custom_list_iter_children: Returns TRUE or FALSE depending on whether
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* the row specified by 'parent' has any children.
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* If it has children, then 'iter' is set to
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* point to the first child. Special case: if
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* 'parent' is NULL, then the first top-level
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* row should be returned if it exists.
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*
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*****************************************************************************/
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static gboolean
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custom_list_iter_children (GtkTreeModel *tree_model,
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GtkTreeIter *iter,
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GtkTreeIter *parent)
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{
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CustomList *custom_list;
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g_return_val_if_fail (parent == NULL || parent->user_data != NULL, FALSE);
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/* this is a list, nodes have no children */
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if (parent)
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return FALSE;
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/* parent == NULL is a special case; we need to return the first top-level row */
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g_return_val_if_fail (CUSTOM_IS_LIST (tree_model), FALSE);
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custom_list = CUSTOM_LIST(tree_model);
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/* No rows => no first row */
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if (custom_list->num_rows == 0)
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return FALSE;
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/* Set iter to first item in list */
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iter->stamp = custom_list->stamp;
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iter->user_data = custom_list->rows[0];
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return TRUE;
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}
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/*****************************************************************************
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*
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* custom_list_iter_has_child: Returns TRUE or FALSE depending on whether
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* the row specified by 'iter' has any children.
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* We only have a list and thus no children.
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*
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|
*****************************************************************************/
|
|
|
|
static gboolean
|
|
custom_list_iter_has_child (GtkTreeModel *tree_model,
|
|
GtkTreeIter *iter)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* custom_list_iter_n_children: Returns the number of children the row
|
|
* specified by 'iter' has. This is usually 0,
|
|
* as we only have a list and thus do not have
|
|
* any children to any rows. A special case is
|
|
* when 'iter' is NULL, in which case we need
|
|
* to return the number of top-level nodes,
|
|
* ie. the number of rows in our list.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static gint
|
|
custom_list_iter_n_children (GtkTreeModel *tree_model,
|
|
GtkTreeIter *iter)
|
|
{
|
|
CustomList *custom_list;
|
|
|
|
g_return_val_if_fail (CUSTOM_IS_LIST (tree_model), -1);
|
|
g_return_val_if_fail (iter == NULL || iter->user_data != NULL, FALSE);
|
|
|
|
custom_list = CUSTOM_LIST(tree_model);
|
|
|
|
/* special case: if iter == NULL, return number of top-level rows */
|
|
if (!iter)
|
|
return custom_list->num_rows;
|
|
|
|
return 0; /* otherwise, this is easy again for a list */
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* custom_list_iter_nth_child: If the row specified by 'parent' has any
|
|
* children, set 'iter' to the n-th child and
|
|
* return TRUE if it exists, otherwise FALSE.
|
|
* A special case is when 'parent' is NULL, in
|
|
* which case we need to set 'iter' to the n-th
|
|
* row if it exists.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static gboolean
|
|
custom_list_iter_nth_child (GtkTreeModel *tree_model,
|
|
GtkTreeIter *iter,
|
|
GtkTreeIter *parent,
|
|
gint n)
|
|
{
|
|
CustomRecord *record;
|
|
CustomList *custom_list;
|
|
|
|
g_return_val_if_fail (CUSTOM_IS_LIST (tree_model), FALSE);
|
|
|
|
custom_list = CUSTOM_LIST(tree_model);
|
|
|
|
/* a list has only top-level rows */
|
|
if(parent)
|
|
return FALSE;
|
|
|
|
/* special case: if parent == NULL, set iter to n-th top-level row */
|
|
|
|
if( n >= custom_list->num_rows )
|
|
return FALSE;
|
|
|
|
record = custom_list->rows[n];
|
|
|
|
g_assert( record != NULL );
|
|
g_assert( record->pos == n );
|
|
|
|
iter->stamp = custom_list->stamp;
|
|
iter->user_data = record;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* custom_list_iter_parent: Point 'iter' to the parent node of 'child'. As
|
|
* we have a list and thus no children and no
|
|
* parents of children, we can just return FALSE.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static gboolean
|
|
custom_list_iter_parent (GtkTreeModel *tree_model,
|
|
GtkTreeIter *iter,
|
|
GtkTreeIter *child)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* custom_list_sortable_get_sort_column_id
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static gboolean
|
|
custom_list_sortable_get_sort_column_id (GtkTreeSortable *sortable,
|
|
gint *sort_col_id,
|
|
GtkSortType *order)
|
|
{
|
|
CustomList *custom_list;
|
|
|
|
g_return_val_if_fail ( sortable != NULL , FALSE );
|
|
g_return_val_if_fail ( CUSTOM_IS_LIST(sortable), FALSE );
|
|
|
|
custom_list = CUSTOM_LIST(sortable);
|
|
|
|
if (sort_col_id)
|
|
*sort_col_id = custom_list->sort_id;
|
|
|
|
if (order)
|
|
*order = custom_list->sort_order;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* custom_list_sortable_set_sort_column_id
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static void
|
|
custom_list_sortable_set_sort_column_id (GtkTreeSortable *sortable,
|
|
gint sort_col_id,
|
|
GtkSortType order)
|
|
{
|
|
CustomList *custom_list;
|
|
|
|
g_return_if_fail ( sortable != NULL );
|
|
g_return_if_fail ( CUSTOM_IS_LIST(sortable) );
|
|
|
|
custom_list = CUSTOM_LIST(sortable);
|
|
|
|
if (custom_list->sort_id == sort_col_id && custom_list->sort_order == order)
|
|
return;
|
|
|
|
custom_list->sort_id = sort_col_id;
|
|
custom_list->sort_order = order;
|
|
|
|
custom_list_resort(custom_list);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* custom_list_sortable_set_sort_func: We have our own built-in sort function
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static void
|
|
custom_list_sortable_set_sort_func (GtkTreeSortable *sortable,
|
|
gint sort_col_id,
|
|
GtkTreeIterCompareFunc sort_func,
|
|
gpointer user_data,
|
|
GtkDestroyNotify destroy_func)
|
|
{
|
|
g_warning ("%s is not supported by the CustomList model.\n", __FUNCTION__);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* custom_list_sortable_set_default_sort_func: We have our own built-in
|
|
* sort function
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static void
|
|
custom_list_sortable_set_default_sort_func (GtkTreeSortable *sortable,
|
|
GtkTreeIterCompareFunc sort_func,
|
|
gpointer user_data,
|
|
GtkDestroyNotify destroy_func)
|
|
{
|
|
g_warning ("%s is not supported by the CustomList model.\n", __FUNCTION__);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* custom_list_sortable_has_default_sort_func
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static gboolean
|
|
custom_list_sortable_has_default_sort_func (GtkTreeSortable *sortable)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* custom_list_compare_records
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static gint
|
|
custom_list_compare_records (gint sort_id, CustomRecord *a, CustomRecord *b)
|
|
{
|
|
switch(sort_id)
|
|
{
|
|
case SORT_ID_NONE:
|
|
return 0;
|
|
|
|
case SORT_ID_NAME:
|
|
{
|
|
if ((a->name) && (b->name))
|
|
return g_utf8_collate(a->name, b->name);
|
|
|
|
if (a->name == b->name)
|
|
return 0; /* both are NULL */
|
|
else
|
|
return (a->name == NULL) ? -1 : 1;
|
|
}
|
|
|
|
case SORT_ID_YEAR_BORN:
|
|
{
|
|
if (a->year_born == b->year_born)
|
|
return 0;
|
|
|
|
return (a->year_born > b->year_born) ? 1 : -1;
|
|
}
|
|
}
|
|
|
|
g_return_val_if_reached(0);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* custom_list_qsort_compare_func
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static gint
|
|
custom_list_qsort_compare_func (CustomRecord **a, CustomRecord **b, CustomList *custom_list)
|
|
{
|
|
gint ret;
|
|
|
|
g_assert ((a) && (b) && (custom_list));
|
|
|
|
ret = custom_list_compare_records(custom_list->sort_id, *a, *b);
|
|
|
|
/* Swap -1 and 1 if sort order is reverse */
|
|
if (ret != 0 && custom_list->sort_order == GTK_SORT_DESCENDING)
|
|
ret = (ret < 0) ? 1 : -1;
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* custom_list_resort: resort the list. Pay attention to how we emit the
|
|
* "rows-reordered" signal after we have resorted the
|
|
* list. This function could be optimised to speed up
|
|
* mass insertions via a timeout or something.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static void
|
|
custom_list_resort (CustomList *custom_list)
|
|
{
|
|
GtkTreePath *path;
|
|
gint *neworder, i;
|
|
|
|
g_return_if_fail ( custom_list != NULL );
|
|
g_return_if_fail ( CUSTOM_IS_LIST(custom_list) );
|
|
|
|
if (custom_list->sort_id == SORT_ID_NONE)
|
|
return;
|
|
|
|
if (custom_list->num_rows == 0)
|
|
return;
|
|
|
|
/* resort */
|
|
g_qsort_with_data(custom_list->rows,
|
|
custom_list->num_rows,
|
|
sizeof(CustomRecord*),
|
|
(GCompareDataFunc) custom_list_qsort_compare_func,
|
|
custom_list);
|
|
|
|
/* let other objects know about the new order */
|
|
neworder = g_new0(gint, custom_list->num_rows);
|
|
|
|
/* NOTE that the API reference for
|
|
* gtk_tree_model_rows_reordered()
|
|
* might be wrong here, see bug
|
|
* number 124790 on bugs.gnome.org.
|
|
* Both will work, but one will give
|
|
* you 'jumpy' selections after a
|
|
* reordering */
|
|
|
|
for (i = 0; i < custom_list->num_rows; ++i)
|
|
{
|
|
/* neworder[(custom_list->rows[i])->pos] = i; */
|
|
neworder[i] = (custom_list->rows[i])->pos;
|
|
(custom_list->rows[i])->pos = i;
|
|
}
|
|
|
|
path = gtk_tree_path_new();
|
|
|
|
gtk_tree_model_rows_reordered(GTK_TREE_MODEL(custom_list), path, NULL, neworder);
|
|
|
|
gtk_tree_path_free(path);
|
|
g_free(neworder);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* custom_list_new: This is what you use in your own code to create a
|
|
* new custom list tree model for you to use.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
CustomList *
|
|
custom_list_new (void)
|
|
{
|
|
CustomList *newcustomlist;
|
|
|
|
newcustomlist = (CustomList*) g_object_new (CUSTOM_TYPE_LIST, NULL);
|
|
|
|
g_assert( newcustomlist != NULL );
|
|
|
|
return newcustomlist;
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* custom_list_append_record: Empty lists are boring. This function can
|
|
* be used in your own code to add rows to the
|
|
* list. Note how we emit the "row-inserted"
|
|
* signal after we have appended the row
|
|
* internally, so the tree view and other
|
|
* interested objects know about the new row.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
void
|
|
custom_list_append_record (CustomList *custom_list,
|
|
const gchar *name,
|
|
guint year_born)
|
|
{
|
|
GtkTreeIter iter;
|
|
GtkTreePath *path;
|
|
CustomRecord *newrecord;
|
|
gulong newsize;
|
|
guint pos;
|
|
|
|
g_return_if_fail (CUSTOM_IS_LIST(custom_list));
|
|
g_return_if_fail (name != NULL);
|
|
|
|
pos = custom_list->num_rows;
|
|
|
|
custom_list->num_rows++;
|
|
|
|
newsize = custom_list->num_rows * sizeof(CustomRecord*);
|
|
|
|
custom_list->rows = g_realloc(custom_list->rows, newsize);
|
|
|
|
newrecord = g_new0(CustomRecord, 1);
|
|
|
|
newrecord->name = g_strdup(name);
|
|
newrecord->name_collate_key = g_utf8_collate_key(name,-1); /* for fast sorting, used later */
|
|
newrecord->year_born = year_born;
|
|
|
|
custom_list->rows[pos] = newrecord;
|
|
newrecord->pos = pos;
|
|
|
|
/* inform the tree view and other interested objects
|
|
* (e.g. tree row references) that we have inserted
|
|
* a new row, and where it was inserted */
|
|
|
|
path = gtk_tree_path_new();
|
|
gtk_tree_path_append_index(path, newrecord->pos);
|
|
|
|
custom_list_get_iter(GTK_TREE_MODEL(custom_list), &iter, path);
|
|
|
|
gtk_tree_model_row_inserted(GTK_TREE_MODEL(custom_list), path, &iter);
|
|
|
|
gtk_tree_path_free(path);
|
|
}
|