#include "gtktreeprivate.h"
#include "gtkrbtree.h"
#include "gtkmarshalers.h"
-#include "gtksignal.h"
static void gtk_tree_selection_init (GtkTreeSelection *selection);
static void gtk_tree_selection_class_init (GtkTreeSelectionClass *class);
static GObjectClass *parent_class = NULL;
static guint tree_selection_signals [LAST_SIGNAL] = { 0 };
-GtkType
+GType
gtk_tree_selection_get_type (void)
{
- static GtkType selection_type = 0;
+ static GType selection_type = 0;
if (!selection_type)
{
(GInstanceInitFunc) gtk_tree_selection_init
};
- selection_type = g_type_register_static (G_TYPE_OBJECT, "GtkTreeSelection", &selection_info, 0);
+ selection_type =
+ g_type_register_static (G_TYPE_OBJECT, "GtkTreeSelection",
+ &selection_info, 0);
}
return selection_type;
class->changed = NULL;
tree_selection_signals[CHANGED] =
- gtk_signal_new ("changed",
- GTK_RUN_FIRST,
- GTK_CLASS_TYPE (object_class),
- GTK_SIGNAL_OFFSET (GtkTreeSelectionClass, changed),
- _gtk_marshal_VOID__VOID,
- GTK_TYPE_NONE, 0);
+ g_signal_new ("changed",
+ G_OBJECT_CLASS_TYPE (object_class),
+ G_SIGNAL_RUN_FIRST,
+ G_STRUCT_OFFSET (GtkTreeSelectionClass, changed),
+ NULL, NULL,
+ _gtk_marshal_VOID__VOID,
+ G_TYPE_NONE, 0);
}
static void
{
GtkTreeSelection *selection;
- selection = GTK_TREE_SELECTION (g_object_new (GTK_TYPE_TREE_SELECTION, NULL));
+ selection = g_object_new (GTK_TYPE_TREE_SELECTION, NULL);
return selection;
}
/**
* gtk_tree_selection_get_selected:
* @selection: A #GtkTreeSelection.
- * @model: A pointer set to the #GtkTreeModel, or NULL.
+ * @model: A pointer to set to the #GtkTreeModel, or NULL.
* @iter: The #GtkTreeIter, or NULL.
*
* Sets @iter to the currently selected node if @selection is set to
return retval;
}
+/**
+ * gtk_tree_selection_get_selected_rows:
+ * @selection: A #GtkTreeSelection.
+ * @model: A pointer to set to the #GtkTreeModel, or NULL.
+ *
+ * Creates a list of path of all selected rows. Additionally, if you are
+ * planning on modifying the model after calling this function, you may
+ * want to convert the returned list into a list of #GtkTreeRowReference<!-- -->s.
+ * To do this, you can use gtk_tree_row_reference_new_proxy().
+ *
+ * To free the return value, use:
+ * <informalexample><programlisting>
+ * g_list_foreach (list, gtk_tree_path_free, NULL);
+ * g_list_free (list);
+ * </programlisting></informalexample>
+ *
+ * Return value: A #GList containing a #GtkTreePath for each selected row.
+ **/
+GList *
+gtk_tree_selection_get_selected_rows (GtkTreeSelection *selection,
+ GtkTreeModel **model)
+{
+ GList *list = NULL;
+ GtkRBTree *tree = NULL;
+ GtkRBNode *node = NULL;
+ GtkTreePath *path;
+
+ g_return_val_if_fail (GTK_IS_TREE_SELECTION (selection), NULL);
+ g_return_val_if_fail (selection->tree_view != NULL, NULL);
+ g_return_val_if_fail (selection->tree_view->priv->model != NULL, NULL);
+
+ if (selection->tree_view->priv->tree == NULL ||
+ selection->tree_view->priv->tree->root == NULL)
+ return NULL;
+
+ if (model)
+ *model = selection->tree_view->priv->model;
+
+ if (selection->type == GTK_SELECTION_NONE)
+ return NULL;
+ else if (selection->type != GTK_SELECTION_MULTIPLE)
+ {
+ GtkTreeIter iter;
+
+ if (gtk_tree_selection_get_selected (selection, NULL, &iter))
+ {
+ GtkTreePath *path;
+
+ path = gtk_tree_model_get_path (*model, &iter);
+ list = g_list_append (list, path);
+
+ return list;
+ }
+
+ return NULL;
+ }
+
+ tree = selection->tree_view->priv->tree;
+ node = selection->tree_view->priv->tree->root;
+
+ while (node->left != tree->nil)
+ node = node->left;
+ path = gtk_tree_path_new_first ();
+
+ do
+ {
+ if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
+ list = g_list_append (list, gtk_tree_path_copy (path));
+
+ if (node->children)
+ {
+ tree = node->children;
+ node = tree->root;
+
+ while (node->left != tree->nil)
+ node = node->left;
+
+ gtk_tree_path_append_index (path, 0);
+ }
+ else
+ {
+ gboolean done = FALSE;
+
+ do
+ {
+ node = _gtk_rbtree_next (tree, node);
+ if (node != NULL)
+ {
+ done = TRUE;
+ gtk_tree_path_next (path);
+ }
+ else
+ {
+ node = tree->parent_node;
+ tree = tree->parent_tree;
+
+ if (!tree)
+ {
+ gtk_tree_path_free (path);
+ return list;
+ }
+
+ gtk_tree_path_up (path);
+ }
+ }
+ while (!done);
+ }
+ }
+ while (TRUE);
+
+ gtk_tree_path_free (path);
+
+ return list;
+}
+
+static void
+gtk_tree_selection_count_selected_rows_helper (GtkRBTree *tree,
+ GtkRBNode *node,
+ gpointer data)
+{
+ gint *count = (gint *)data;
+
+ if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
+ (*count)++;
+
+ if (node->children)
+ _gtk_rbtree_traverse (node->children, node->children->root,
+ G_PRE_ORDER,
+ gtk_tree_selection_count_selected_rows_helper, data);
+}
+
+/**
+ * gtk_tree_selection_count_selected_rows:
+ * @selection: A #GtkTreeSelection.
+ *
+ * Returns the number of rows that have been selected in @tree.
+ *
+ * Return value: The number of rows selected.
+ **/
+gint
+gtk_tree_selection_count_selected_rows (GtkTreeSelection *selection)
+{
+ gint count = 0;
+ GtkRBTree *tree;
+ GtkRBNode *node;
+
+ g_return_val_if_fail (GTK_IS_TREE_SELECTION (selection), 0);
+ g_return_val_if_fail (selection->tree_view != NULL, 0);
+ g_return_val_if_fail (selection->tree_view->priv->model != NULL, 0);
+
+ if (selection->tree_view->priv->tree == NULL ||
+ selection->tree_view->priv->tree->root == NULL)
+ return 0;
+
+ if (selection->type == GTK_SELECTION_SINGLE ||
+ selection->type == GTK_SELECTION_BROWSE)
+ {
+ if (gtk_tree_selection_get_selected (selection, NULL, NULL))
+ return 1;
+ else
+ return 0;
+ }
+
+ tree = selection->tree_view->priv->tree;
+ node = selection->tree_view->priv->tree->root;
+
+ _gtk_rbtree_traverse (selection->tree_view->priv->tree,
+ selection->tree_view->priv->tree->root,
+ G_PRE_ORDER,
+ gtk_tree_selection_count_selected_rows_helper,
+ &count);
+
+ return count;
+}
+
+/* gtk_tree_selection_selected_foreach helper */
+static void
+model_changed (gpointer data)
+{
+ gboolean *stop = (gboolean *)data;
+
+ *stop = TRUE;
+}
+
/**
* gtk_tree_selection_selected_foreach:
* @selection: A #GtkTreeSelection.
* @func: The function to call for each selected node.
* @data: user data to pass to the function.
*
- * Calls a function for each selected node.
+ * Calls a function for each selected node. Note that you cannot modify
+ * the tree or selection from within this function. As a result,
+ * gtk_tree_selection_get_selected_rows() might be more useful.
**/
void
gtk_tree_selection_selected_foreach (GtkTreeSelection *selection,
GtkRBNode *node;
GtkTreeIter iter;
+ guint inserted_id, deleted_id, reordered_id;
+ gboolean stop = FALSE, has_next = FALSE, has_parent = FALSE;
+
g_return_if_fail (GTK_IS_TREE_SELECTION (selection));
g_return_if_fail (selection->tree_view != NULL);
g_return_if_fail (selection->tree_view->priv->model != NULL);
while (node->left != tree->nil)
node = node->left;
+ /* connect to signals to monitor changes in treemodel */
+ inserted_id = g_signal_connect_swapped (selection->tree_view->priv->model,
+ "row_inserted",
+ G_CALLBACK (model_changed),
+ &stop);
+ deleted_id = g_signal_connect_swapped (selection->tree_view->priv->model,
+ "row_deleted",
+ G_CALLBACK (model_changed),
+ &stop);
+ reordered_id = g_signal_connect_swapped (selection->tree_view->priv->model,
+ "rows_reordered",
+ G_CALLBACK (model_changed),
+ &stop);
+
/* find the node internally */
path = gtk_tree_path_new_first ();
gtk_tree_model_get_iter (selection->tree_view->priv->model,
{
if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
(* func) (selection->tree_view->priv->model, path, &iter, data);
+
+ if (stop)
+ goto out;
+
if (node->children)
{
gboolean has_child;
tmp = iter;
has_child = gtk_tree_model_iter_children (selection->tree_view->priv->model, &iter, &tmp);
gtk_tree_path_append_index (path, 0);
- /* Sanity Check! */
- TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
+
+ /* we do the sanity check at the bottom of this function */
+ if (has_child)
+ goto out;
}
else
{
tree = tree->parent_tree;
if (tree == NULL)
{
- gtk_tree_path_free (path);
/* we've run out of tree */
/* We're done with this function */
- return;
+
+ goto out;
}
+
has_parent = gtk_tree_model_iter_parent (selection->tree_view->priv->model, &iter, &tmp_iter);
gtk_tree_path_up (path);
- /* Sanity check */
- TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
+
+ /* we do the sanity check at the bottom of this function */
+ if (has_parent)
+ goto out;
}
}
while (!done);
}
}
while (TRUE);
+
+out:
+ if (path)
+ gtk_tree_path_free (path);
+
+ g_signal_handler_disconnect (selection->tree_view->priv->model,
+ inserted_id);
+ g_signal_handler_disconnect (selection->tree_view->priv->model,
+ deleted_id);
+ g_signal_handler_disconnect (selection->tree_view->priv->model,
+ reordered_id);
+
+ /* check if we have to spew a scary message */
+ if (has_next)
+ TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
+ if (has_parent)
+ TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
+ if (stop)
+ g_warning
+ ("The model has been modified from within gtk_tree_selection_foreach.\n"
+ "This function is for observing the selections of the tree only. If\n"
+ "you are trying to get all selected items from the tree, try using\n"
+ "gtk_tree_selection_get_selected_rows instead.\n");
}
/**
* @selection: A #GtkTreeSelection
* @iter: A valid #GtkTreeIter
*
- * Returns %TRUE if the row pointed to by @path is currently selected.
+ * Returns %TRUE if the row at @iter is currently selected.
*
* Return value: %TRUE, if @iter is selected
**/
g_return_if_fail (selection->type == GTK_SELECTION_MULTIPLE);
if (gtk_tree_selection_real_select_all (selection))
- g_signal_emit (G_OBJECT (selection), tree_selection_signals[CHANGED], 0);
+ g_signal_emit (selection, tree_selection_signals[CHANGED], 0);
}
static void
return;
if (gtk_tree_selection_real_unselect_all (selection))
- g_signal_emit (G_OBJECT (selection), tree_selection_signals[CHANGED], 0);
+ g_signal_emit (selection, tree_selection_signals[CHANGED], 0);
}
+enum
+{
+ RANGE_SELECT,
+ RANGE_UNSELECT
+};
+
static gint
-gtk_tree_selection_real_select_range (GtkTreeSelection *selection,
+gtk_tree_selection_real_modify_range (GtkTreeSelection *selection,
+ gint mode,
GtkTreePath *start_path,
GtkTreePath *end_path)
{
do
{
- dirty |= gtk_tree_selection_real_select_node (selection, start_tree, start_node, TRUE);
+ dirty |= gtk_tree_selection_real_select_node (selection, start_tree, start_node, (mode == RANGE_SELECT)?TRUE:FALSE);
if (start_node == end_node)
break;
g_return_if_fail (GTK_IS_TREE_SELECTION (selection));
g_return_if_fail (selection->tree_view != NULL);
- if (gtk_tree_selection_real_select_range (selection, start_path, end_path))
- g_signal_emit (G_OBJECT (selection), tree_selection_signals[CHANGED], 0);
+ if (gtk_tree_selection_real_modify_range (selection, RANGE_SELECT, start_path, end_path))
+ g_signal_emit (selection, tree_selection_signals[CHANGED], 0);
+}
+
+/**
+ * gtk_tree_selection_unselect_range:
+ * @selection: A #GtkTreeSelection.
+ * @start_path: The initial node of the range.
+ * @end_path: The initial node of the range.
+ *
+ * Unselects a range of nodes, determined by @start_path and @end_path
+ * inclusive.
+ **/
+void
+gtk_tree_selection_unselect_range (GtkTreeSelection *selection,
+ GtkTreePath *start_path,
+ GtkTreePath *end_path)
+{
+ g_return_if_fail (GTK_IS_TREE_SELECTION (selection));
+ g_return_if_fail (selection->tree_view != NULL);
+
+ if (gtk_tree_selection_real_modify_range (selection, RANGE_UNSELECT, start_path, end_path))
+ g_signal_emit (selection, tree_selection_signals[CHANGED], 0);
}
/* Called internally by gtktreeview.c It handles actually selecting the tree.
*/
-/**
+/*
* docs about the 'override_browse_mode', we set this flag when we want to
* unset select the node and override the select browse mode behaviour (that is
* 'one node should *always* be selected').
if (gtk_tree_selection_real_select_node (selection, tree, node, TRUE))
{
dirty = TRUE;
+ if (selection->tree_view->priv->anchor)
+ gtk_tree_row_reference_free (selection->tree_view->priv->anchor);
+
selection->tree_view->priv->anchor =
gtk_tree_row_reference_new_proxy (G_OBJECT (selection->tree_view), selection->tree_view->priv->model, path);
}
else if ((state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
{
dirty = gtk_tree_selection_real_unselect_all (selection);
- dirty |= gtk_tree_selection_real_select_range (selection,
+ dirty |= gtk_tree_selection_real_modify_range (selection,
+ RANGE_SELECT,
anchor_path,
path);
}
gtk_tree_path_free (anchor_path);
if (dirty)
- g_signal_emit (G_OBJECT (selection), tree_selection_signals[CHANGED], 0);
+ g_signal_emit (selection, tree_selection_signals[CHANGED], 0);
}
/* NOTE: Any {un,}selection ever done _MUST_ be done through this function!
projects / ~andy / gtk / blobdiff