AuroraMiddleware/gtk2
1
0
Fork 0
forked from AuroraMiddleware/gtk
Code Issues Pull Requests Projects Releases Wiki Activity
fbbcb5c01b
gtk2/gtk/gtktreeselection.c
Matthias Clasen e4b5e94eb9 Make accessible implementations public 
This commit exposes the get_type() functions and standard
headers for accessible implementations. This makes it possible
to derive from the GTK accessible implementations without
GType magic tricks. This is necessary, because we require the
a11y type hierarchy to be parallel to the widget type hierarchy.
So, if you derive a widget and need to adjust its a11y implementation,
you have to be able to derive its accessible implementation.

This commit probably exposes more than is absolutely necessary,
it also exposes accessibles of widgets that are unlikely candidates
for deriving from.
2012-12-27 11:23:22 -05:00

1656 lines
43 KiB
C
Raw Blame History

/* gtktreeselection.h
* Copyright (C) 2000 Red Hat, Inc., Jonathan Blandford <jrb@redhat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include "gtktreeselection.h"
#include "gtktreeprivate.h"
#include "gtkrbtree.h"
#include "gtkmarshalers.h"
#include "gtkintl.h"
#include "gtktypebuiltins.h"
#include "a11y/gtktreeviewaccessibleprivate.h"
/**
* SECTION:gtktreeselection
* @Short_description: The selection object for GtkTreeView
* @Title: GtkTreeSelection
* @See_also: #GtkTreeView, #GtkTreeViewColumn, #GtkTreeDnd, #GtkTreeMode,
* #GtkTreeSortable, #GtkTreeModelSort, #GtkListStore, #GtkTreeStore,
* #GtkCellRenderer, #GtkCellEditable, #GtkCellRendererPixbuf,
* #GtkCellRendererText, #GtkCellRendererToggle
*
* The #GtkTreeSelection object is a helper object to manage the selection
* for a #GtkTreeView widget. The #GtkTreeSelection object is
* automatically created when a new #GtkTreeView widget is created, and
* cannot exist independentally of this widget. The primary reason the
* #GtkTreeSelection objects exists is for cleanliness of code and API.
* That is, there is no conceptual reason all these functions could not be
* methods on the #GtkTreeView widget instead of a separate function.
*
* The #GtkTreeSelection object is gotten from a #GtkTreeView by calling
* gtk_tree_view_get_selection(). It can be manipulated to check the
* selection status of the tree, as well as select and deselect individual
* rows. Selection is done completely view side. As a result, multiple
* views of the same model can have completely different selections.
* Additionally, you cannot change the selection of a row on the model that
* is not currently displayed by the view without expanding its parents
* first.
*
* One of the important things to remember when monitoring the selection of
* a view is that the #GtkTreeSelection::changed signal is mostly a hint.
* That is, it may only emit one signal when a range of rows is selected.
* Additionally, it may on occasion emit a #GtkTreeSelection::changed signal
* when nothing has happened (mostly as a result of programmers calling
* select_row on an already selected row).
*/
struct _GtkTreeSelectionPrivate
{
GtkTreeView *tree_view;
GtkSelectionMode type;
GtkTreeSelectionFunc user_func;
gpointer user_data;
GDestroyNotify destroy;
};
static void gtk_tree_selection_finalize (GObject *object);
static gint gtk_tree_selection_real_select_all (GtkTreeSelection *selection);
static gint gtk_tree_selection_real_unselect_all (GtkTreeSelection *selection);
static gint gtk_tree_selection_real_select_node (GtkTreeSelection *selection,
GtkRBTree *tree,
GtkRBNode *node,
gboolean select);
static void gtk_tree_selection_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_tree_selection_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
enum
{
PROP_0,
PROP_MODE,
N_PROPERTIES
};
enum
{
CHANGED,
LAST_SIGNAL
};
static GParamSpec *properties[N_PROPERTIES];
static guint tree_selection_signals [LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE (GtkTreeSelection, gtk_tree_selection, G_TYPE_OBJECT)
static void
gtk_tree_selection_class_init (GtkTreeSelectionClass *class)
{
GObjectClass *object_class;
object_class = (GObjectClass*) class;
object_class->finalize = gtk_tree_selection_finalize;
object_class->set_property = gtk_tree_selection_set_property;
object_class->get_property = gtk_tree_selection_get_property;
class->changed = NULL;
/* Properties */
/**
* GtkTreeSelection:mode:
*
* Selection mode.
* See gtk_tree_selection_set_mode() for more information on this property.
*
* Since: 3.2
*/
properties[PROP_MODE] = g_param_spec_enum ("mode",
P_("Mode"),
P_("Selection mode"),
GTK_TYPE_SELECTION_MODE,
GTK_SELECTION_SINGLE,
G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS);
/* Install all properties */
g_object_class_install_properties (object_class, N_PROPERTIES, properties);
/* Signals */
/**
* GtkTreeSelection::changed:
* @treeselection: the object which received the signal.
*
* Emitted whenever the selection has (possibly) changed. Please note that
* this signal is mostly a hint. It may only be emitted once when a range
* of rows are selected, and it may occasionally be emitted when nothing
* has happened.
*/
tree_selection_signals[CHANGED] =
g_signal_new (I_("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);
g_type_class_add_private (class, sizeof (GtkTreeSelectionPrivate));
}
static void
gtk_tree_selection_init (GtkTreeSelection *selection)
{
GtkTreeSelectionPrivate *priv;
selection->priv = G_TYPE_INSTANCE_GET_PRIVATE (selection,
GTK_TYPE_TREE_SELECTION,
GtkTreeSelectionPrivate);
priv = selection->priv;
priv->type = GTK_SELECTION_SINGLE;
}
static void
gtk_tree_selection_finalize (GObject *object)
{
GtkTreeSelection *selection = GTK_TREE_SELECTION (object);
GtkTreeSelectionPrivate *priv = selection->priv;
if (priv->destroy)
priv->destroy (priv->user_data);
/* chain parent_class' handler */
G_OBJECT_CLASS (gtk_tree_selection_parent_class)->finalize (object);
}
static void
gtk_tree_selection_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
g_return_if_fail (GTK_IS_TREE_SELECTION (object));
switch (prop_id)
{
case PROP_MODE:
gtk_tree_selection_set_mode (GTK_TREE_SELECTION (object), g_value_get_enum (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_tree_selection_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
g_return_if_fail (GTK_IS_TREE_SELECTION (object));
switch (prop_id)
{
case PROP_MODE:
g_value_set_enum (value, gtk_tree_selection_get_mode (GTK_TREE_SELECTION (object)));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/**
* _gtk_tree_selection_new:
*
* Creates a new #GtkTreeSelection object. This function should not be invoked,
* as each #GtkTreeView will create its own #GtkTreeSelection.
*
* Return value: A newly created #GtkTreeSelection object.
**/
GtkTreeSelection*
_gtk_tree_selection_new (void)
{
GtkTreeSelection *selection;
selection = g_object_new (GTK_TYPE_TREE_SELECTION, NULL);
return selection;
}
/**
* _gtk_tree_selection_new_with_tree_view:
* @tree_view: The #GtkTreeView.
*
* Creates a new #GtkTreeSelection object. This function should not be invoked,
* as each #GtkTreeView will create its own #GtkTreeSelection.
*
* Return value: A newly created #GtkTreeSelection object.
**/
GtkTreeSelection*
_gtk_tree_selection_new_with_tree_view (GtkTreeView *tree_view)
{
GtkTreeSelection *selection;
g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
selection = _gtk_tree_selection_new ();
_gtk_tree_selection_set_tree_view (selection, tree_view);
return selection;
}
/**
* _gtk_tree_selection_set_tree_view:
* @selection: A #GtkTreeSelection.
* @tree_view: The #GtkTreeView.
*
* Sets the #GtkTreeView of @selection. This function should not be invoked, as
* it is used internally by #GtkTreeView.
**/
void
_gtk_tree_selection_set_tree_view (GtkTreeSelection *selection,
GtkTreeView *tree_view)
{
GtkTreeSelectionPrivate *priv;
g_return_if_fail (GTK_IS_TREE_SELECTION (selection));
if (tree_view != NULL)
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
priv = selection->priv;
priv->tree_view = tree_view;
}
/**
* gtk_tree_selection_set_mode:
* @selection: A #GtkTreeSelection.
* @type: The selection mode
*
* Sets the selection mode of the @selection. If the previous type was
* #GTK_SELECTION_MULTIPLE, then the anchor is kept selected, if it was
* previously selected.
**/
void
gtk_tree_selection_set_mode (GtkTreeSelection *selection,
GtkSelectionMode type)
{
GtkTreeSelectionPrivate *priv;
GtkTreeSelectionFunc tmp_func;
g_return_if_fail (GTK_IS_TREE_SELECTION (selection));
priv = selection->priv;
if (priv->type == type)
return;
if (type == GTK_SELECTION_NONE)
{
/* We do this so that we unconditionally unset all rows
*/
tmp_func = priv->user_func;
priv->user_func = NULL;
gtk_tree_selection_unselect_all (selection);
priv->user_func = tmp_func;
_gtk_tree_view_set_anchor_path (priv->tree_view, NULL);
}
else if (type == GTK_SELECTION_SINGLE ||
type == GTK_SELECTION_BROWSE)
{
GtkRBTree *tree = NULL;
GtkRBNode *node = NULL;
gint selected = FALSE;
GtkTreePath *anchor_path = NULL;
anchor_path = _gtk_tree_view_get_anchor_path (priv->tree_view);
if (anchor_path)
{
_gtk_tree_view_find_node (priv->tree_view,
anchor_path,
&tree,
&node);
if (node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
selected = TRUE;
}
/* We do this so that we unconditionally unset all rows
*/
tmp_func = priv->user_func;
priv->user_func = NULL;
gtk_tree_selection_unselect_all (selection);
priv->user_func = tmp_func;
if (node && selected)
_gtk_tree_selection_internal_select_node (selection,
node,
tree,
anchor_path,
0,
FALSE);
if (anchor_path)
gtk_tree_path_free (anchor_path);
}
priv->type = type;
g_object_notify_by_pspec (G_OBJECT (selection), properties[PROP_MODE]);
}
/**
* gtk_tree_selection_get_mode:
* @selection: a #GtkTreeSelection
*
* Gets the selection mode for @selection. See
* gtk_tree_selection_set_mode().
*
* Return value: the current selection mode
**/
GtkSelectionMode
gtk_tree_selection_get_mode (GtkTreeSelection *selection)
{
g_return_val_if_fail (GTK_IS_TREE_SELECTION (selection), GTK_SELECTION_SINGLE);
return selection->priv->type;
}
/**
* gtk_tree_selection_set_select_function:
* @selection: A #GtkTreeSelection.
* @func: The selection function. May be %NULL
* @data: The selection function's data. May be %NULL
* @destroy: The destroy function for user data. May be %NULL
*
* Sets the selection function.
*
* If set, this function is called before any node is selected or unselected,
* giving some control over which nodes are selected. The select function
* should return %TRUE if the state of the node may be toggled, and %FALSE
* if the state of the node should be left unchanged.
*/
void
gtk_tree_selection_set_select_function (GtkTreeSelection *selection,
GtkTreeSelectionFunc func,
gpointer data,
GDestroyNotify destroy)
{
GtkTreeSelectionPrivate *priv;
g_return_if_fail (GTK_IS_TREE_SELECTION (selection));
priv = selection->priv;
if (priv->destroy)
priv->destroy (priv->user_data);
priv->user_func = func;
priv->user_data = data;
priv->destroy = destroy;
}
/**
* gtk_tree_selection_get_select_function: (skip)
* @selection: A #GtkTreeSelection.
*
* Returns the current selection function.
*
* Return value: The function.
*
* Since: 2.14
**/
GtkTreeSelectionFunc
gtk_tree_selection_get_select_function (GtkTreeSelection *selection)
{
g_return_val_if_fail (GTK_IS_TREE_SELECTION (selection), NULL);
return selection->priv->user_func;
}
/**
* gtk_tree_selection_get_user_data: (skip)
* @selection: A #GtkTreeSelection.
*
* Returns the user data for the selection function.
*
* Return value: The user data.
**/
gpointer
gtk_tree_selection_get_user_data (GtkTreeSelection *selection)
{
g_return_val_if_fail (GTK_IS_TREE_SELECTION (selection), NULL);
return selection->priv->user_data;
}
/**
* gtk_tree_selection_get_tree_view:
* @selection: A #GtkTreeSelection
*
* Returns the tree view associated with @selection.
*
* Return value: (transfer none): A #GtkTreeView
**/
GtkTreeView *
gtk_tree_selection_get_tree_view (GtkTreeSelection *selection)
{
g_return_val_if_fail (GTK_IS_TREE_SELECTION (selection), NULL);
return selection->priv->tree_view;
}
/**
* gtk_tree_selection_get_selected:
* @selection: A #GtkTreeSelection.
* @model: (out) (allow-none) (transfer none): A pointer to set to the #GtkTreeModel, or NULL.
* @iter: (out) (allow-none): The #GtkTreeIter, or NULL.
*
* Sets @iter to the currently selected node if @selection is set to
* #GTK_SELECTION_SINGLE or #GTK_SELECTION_BROWSE. @iter may be NULL if you
* just want to test if @selection has any selected nodes. @model is filled
* with the current model as a convenience. This function will not work if you
* use @selection is #GTK_SELECTION_MULTIPLE.
*
* Return value: TRUE, if there is a selected node.
**/
gboolean
gtk_tree_selection_get_selected (GtkTreeSelection *selection,
GtkTreeModel **model,
GtkTreeIter *iter)
{
GtkTreeSelectionPrivate *priv;
GtkRBTree *tree;
GtkRBNode *node;
GtkTreePath *anchor_path;
gboolean retval;
gboolean found_node;
g_return_val_if_fail (GTK_IS_TREE_SELECTION (selection), FALSE);
priv = selection->priv;
g_return_val_if_fail (priv->type != GTK_SELECTION_MULTIPLE, FALSE);
g_return_val_if_fail (priv->tree_view != NULL, FALSE);
/* Clear the iter */
if (iter)
memset (iter, 0, sizeof (GtkTreeIter));
if (model)
*model = gtk_tree_view_get_model (priv->tree_view);
anchor_path = _gtk_tree_view_get_anchor_path (priv->tree_view);
if (anchor_path == NULL)
return FALSE;
retval = FALSE;
found_node = !_gtk_tree_view_find_node (priv->tree_view,
anchor_path,
&tree,
&node);
if (found_node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
{
/* we only want to return the anchor if it exists in the rbtree and
* is selected.
*/
if (iter == NULL)
retval = TRUE;
else
retval = gtk_tree_model_get_iter (gtk_tree_view_get_model (priv->tree_view),
iter,
anchor_path);
}
else
{
/* We don't want to return the anchor if it isn't actually selected.
*/
retval = FALSE;
}
gtk_tree_path_free (anchor_path);
return retval;
}
/**
* gtk_tree_selection_get_selected_rows:
* @selection: A #GtkTreeSelection.
* @model: (out) (allow-none) (transfer none): 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().
*
* To free the return value, use:
* |[
* g_list_free_full (list, (GDestroyNotify) gtk_tree_path_free);
* ]|
*
* Return value: (element-type GtkTreePath) (transfer full): A #GList containing a #GtkTreePath for each selected row.
*
* Since: 2.2
**/
GList *
gtk_tree_selection_get_selected_rows (GtkTreeSelection *selection,
GtkTreeModel **model)
{
GtkTreeSelectionPrivate *priv;
GList *list = NULL;
GtkRBTree *tree = NULL;
GtkRBNode *node = NULL;
GtkTreePath *path;
g_return_val_if_fail (GTK_IS_TREE_SELECTION (selection), NULL);
priv = selection->priv;
g_return_val_if_fail (priv->tree_view != NULL, NULL);
if (model)
*model = gtk_tree_view_get_model (priv->tree_view);
tree = _gtk_tree_view_get_rbtree (priv->tree_view);
if (tree == NULL || tree->root == NULL)
return NULL;
if (priv->type == GTK_SELECTION_NONE)
return NULL;
else if (priv->type != GTK_SELECTION_MULTIPLE)
{
GtkTreeIter iter;
if (gtk_tree_selection_get_selected (selection, NULL, &iter))
{
GtkTreePath *path;
path = gtk_tree_model_get_path (gtk_tree_view_get_model (priv->tree_view), &iter);
list = g_list_append (list, path);
return list;
}
return NULL;
}
node = _gtk_rbtree_first (tree);
path = gtk_tree_path_new_first ();
do
{
if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
list = g_list_prepend (list, gtk_tree_path_copy (path));
if (node->children)
{
tree = node->children;
node = _gtk_rbtree_first (tree);
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);
goto done;
}
gtk_tree_path_up (path);
}
}
while (!done);
}
}
while (TRUE);
gtk_tree_path_free (path);
done:
return g_list_reverse (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.
*
* Since: 2.2
**/
gint
gtk_tree_selection_count_selected_rows (GtkTreeSelection *selection)
{
GtkTreeSelectionPrivate *priv;
gint count = 0;
GtkRBTree *tree;
g_return_val_if_fail (GTK_IS_TREE_SELECTION (selection), 0);
priv = selection->priv;
g_return_val_if_fail (priv->tree_view != NULL, 0);
tree = _gtk_tree_view_get_rbtree (priv->tree_view);
if (tree == NULL || tree->root == NULL)
return 0;
if (priv->type == GTK_SELECTION_SINGLE ||
priv->type == GTK_SELECTION_BROWSE)
{
if (gtk_tree_selection_get_selected (selection, NULL, NULL))
return 1;
else
return 0;
}
_gtk_rbtree_traverse (tree, 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: (scope call): The function to call for each selected node.
* @data: user data to pass to the function.
*
* 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,
GtkTreeSelectionForeachFunc func,
gpointer data)
{
GtkTreeSelectionPrivate *priv;
GtkTreePath *path;
GtkRBTree *tree;
GtkRBNode *node;
GtkTreeIter iter;
GtkTreeModel *model;
gulong inserted_id, deleted_id, reordered_id, changed_id;
gboolean stop = FALSE;
g_return_if_fail (GTK_IS_TREE_SELECTION (selection));
priv = selection->priv;
g_return_if_fail (priv->tree_view != NULL);
tree = _gtk_tree_view_get_rbtree (priv->tree_view);
if (func == NULL || tree == NULL || tree->root == NULL)
return;
model = gtk_tree_view_get_model (priv->tree_view);
if (priv->type == GTK_SELECTION_SINGLE ||
priv->type == GTK_SELECTION_BROWSE)
{
path = _gtk_tree_view_get_anchor_path (priv->tree_view);
if (path)
{
gtk_tree_model_get_iter (model, &iter, path);
(* func) (model, path, &iter, data);
gtk_tree_path_free (path);
}
return;
}
node = _gtk_rbtree_first (tree);
g_object_ref (model);
/* connect to signals to monitor changes in treemodel */
inserted_id = g_signal_connect_swapped (model, "row-inserted",
G_CALLBACK (model_changed),
&stop);
deleted_id = g_signal_connect_swapped (model, "row-deleted",
G_CALLBACK (model_changed),
&stop);
reordered_id = g_signal_connect_swapped (model, "rows-reordered",
G_CALLBACK (model_changed),
&stop);
changed_id = g_signal_connect_swapped (priv->tree_view, "notify::model",
G_CALLBACK (model_changed),
&stop);
/* find the node internally */
path = gtk_tree_path_new_first ();
do
{
if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
{
gtk_tree_model_get_iter (model, &iter, path);
(* func) (model, path, &iter, data);
}
if (stop)
goto out;
if (node->children)
{
tree = node->children;
node = _gtk_rbtree_first (tree);
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 == NULL)
{
/* we've run out of tree */
/* We're done with this function */
goto out;
}
gtk_tree_path_up (path);
}
}
while (!done);
}
}
while (TRUE);
out:
if (path)
gtk_tree_path_free (path);
g_signal_handler_disconnect (model, inserted_id);
g_signal_handler_disconnect (model, deleted_id);
g_signal_handler_disconnect (model, reordered_id);
g_signal_handler_disconnect (priv->tree_view, changed_id);
g_object_unref (model);
/* check if we have to spew a scary message */
if (stop)
g_warning ("The model has been modified from within gtk_tree_selection_selected_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");
}
/**
* gtk_tree_selection_select_path:
* @selection: A #GtkTreeSelection.
* @path: The #GtkTreePath to be selected.
*
* Select the row at @path.
**/
void
gtk_tree_selection_select_path (GtkTreeSelection *selection,
GtkTreePath *path)
{
GtkTreeSelectionPrivate *priv;
GtkRBNode *node;
GtkRBTree *tree;
gboolean ret;
GtkTreeSelectMode mode = 0;
g_return_if_fail (GTK_IS_TREE_SELECTION (selection));
priv = selection->priv;
g_return_if_fail (priv->tree_view != NULL);
g_return_if_fail (path != NULL);
ret = _gtk_tree_view_find_node (priv->tree_view,
path,
&tree,
&node);
if (node == NULL || GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED) ||
ret == TRUE)
return;
if (priv->type == GTK_SELECTION_MULTIPLE)
mode = GTK_TREE_SELECT_MODE_TOGGLE;
_gtk_tree_selection_internal_select_node (selection,
node,
tree,
path,
mode,
FALSE);
}
/**
* gtk_tree_selection_unselect_path:
* @selection: A #GtkTreeSelection.
* @path: The #GtkTreePath to be unselected.
*
* Unselects the row at @path.
**/
void
gtk_tree_selection_unselect_path (GtkTreeSelection *selection,
GtkTreePath *path)
{
GtkTreeSelectionPrivate *priv;
GtkRBNode *node;
GtkRBTree *tree;
gboolean ret;
g_return_if_fail (GTK_IS_TREE_SELECTION (selection));
priv = selection->priv;
g_return_if_fail (priv->tree_view != NULL);
g_return_if_fail (path != NULL);
ret = _gtk_tree_view_find_node (priv->tree_view,
path,
&tree,
&node);
if (node == NULL || !GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED) ||
ret == TRUE)
return;
_gtk_tree_selection_internal_select_node (selection,
node,
tree,
path,
GTK_TREE_SELECT_MODE_TOGGLE,
TRUE);
}
/**
* gtk_tree_selection_select_iter:
* @selection: A #GtkTreeSelection.
* @iter: The #GtkTreeIter to be selected.
*
* Selects the specified iterator.
**/
void
gtk_tree_selection_select_iter (GtkTreeSelection *selection,
GtkTreeIter *iter)
{
GtkTreeSelectionPrivate *priv;
GtkTreePath *path;
GtkTreeModel *model;
g_return_if_fail (GTK_IS_TREE_SELECTION (selection));
priv = selection->priv;
g_return_if_fail (priv->tree_view != NULL);
model = gtk_tree_view_get_model (priv->tree_view);
g_return_if_fail (model != NULL);
g_return_if_fail (iter != NULL);
path = gtk_tree_model_get_path (model, iter);
if (path == NULL)
return;
gtk_tree_selection_select_path (selection, path);
gtk_tree_path_free (path);
}
/**
* gtk_tree_selection_unselect_iter:
* @selection: A #GtkTreeSelection.
* @iter: The #GtkTreeIter to be unselected.
*
* Unselects the specified iterator.
**/
void
gtk_tree_selection_unselect_iter (GtkTreeSelection *selection,
GtkTreeIter *iter)
{
GtkTreeSelectionPrivate *priv;
GtkTreePath *path;
GtkTreeModel *model;
g_return_if_fail (GTK_IS_TREE_SELECTION (selection));
priv = selection->priv;
g_return_if_fail (priv->tree_view != NULL);
model = gtk_tree_view_get_model (priv->tree_view);
g_return_if_fail (model != NULL);
g_return_if_fail (iter != NULL);
path = gtk_tree_model_get_path (model, iter);
if (path == NULL)
return;
gtk_tree_selection_unselect_path (selection, path);
gtk_tree_path_free (path);
}
/**
* gtk_tree_selection_path_is_selected:
* @selection: A #GtkTreeSelection.
* @path: A #GtkTreePath to check selection on.
*
* Returns %TRUE if the row pointed to by @path is currently selected. If @path
* does not point to a valid location, %FALSE is returned
*
* Return value: %TRUE if @path is selected.
**/
gboolean
gtk_tree_selection_path_is_selected (GtkTreeSelection *selection,
GtkTreePath *path)
{
GtkTreeSelectionPrivate *priv;
GtkRBNode *node;
GtkRBTree *tree;
gboolean ret;
g_return_val_if_fail (GTK_IS_TREE_SELECTION (selection), FALSE);
priv = selection->priv;
g_return_val_if_fail (path != NULL, FALSE);
g_return_val_if_fail (priv->tree_view != NULL, FALSE);
if (gtk_tree_view_get_model (priv->tree_view) == NULL)
return FALSE;
ret = _gtk_tree_view_find_node (priv->tree_view,
path,
&tree,
&node);
if ((node == NULL) || !GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED) ||
ret == TRUE)
return FALSE;
return TRUE;
}
/**
* gtk_tree_selection_iter_is_selected:
* @selection: A #GtkTreeSelection
* @iter: A valid #GtkTreeIter
*
* Returns %TRUE if the row at @iter is currently selected.
*
* Return value: %TRUE, if @iter is selected
**/
gboolean
gtk_tree_selection_iter_is_selected (GtkTreeSelection *selection,
GtkTreeIter *iter)
{
GtkTreeSelectionPrivate *priv;
GtkTreePath *path;
GtkTreeModel *model;
gboolean retval;
g_return_val_if_fail (GTK_IS_TREE_SELECTION (selection), FALSE);
priv = selection->priv;
g_return_val_if_fail (iter != NULL, FALSE);
g_return_val_if_fail (priv->tree_view != NULL, FALSE);
model = gtk_tree_view_get_model (priv->tree_view);
g_return_val_if_fail (model != NULL, FALSE);
path = gtk_tree_model_get_path (model, iter);
if (path == NULL)
return FALSE;
retval = gtk_tree_selection_path_is_selected (selection, path);
gtk_tree_path_free (path);
return retval;
}
/* Wish I was in python, right now... */
struct _TempTuple {
GtkTreeSelection *selection;
gint dirty;
};
static void
select_all_helper (GtkRBTree *tree,
GtkRBNode *node,
gpointer data)
{
struct _TempTuple *tuple = data;
if (node->children)
_gtk_rbtree_traverse (node->children,
node->children->root,
G_PRE_ORDER,
select_all_helper,
data);
if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
{
tuple->dirty = gtk_tree_selection_real_select_node (tuple->selection, tree, node, TRUE) || tuple->dirty;
}
}
/* We have a real_{un,}select_all function that doesn't emit the signal, so we
* can use it in other places without fear of the signal being emitted.
*/
static gint
gtk_tree_selection_real_select_all (GtkTreeSelection *selection)
{
GtkTreeSelectionPrivate *priv = selection->priv;
struct _TempTuple *tuple;
GtkRBTree *tree;
tree = _gtk_tree_view_get_rbtree (priv->tree_view);
if (tree == NULL)
return FALSE;
/* Mark all nodes selected */
tuple = g_new (struct _TempTuple, 1);
tuple->selection = selection;
tuple->dirty = FALSE;
_gtk_rbtree_traverse (tree, tree->root,
G_PRE_ORDER,
select_all_helper,
tuple);
if (tuple->dirty)
{
g_free (tuple);
return TRUE;
}
g_free (tuple);
return FALSE;
}
/**
* gtk_tree_selection_select_all:
* @selection: A #GtkTreeSelection.
*
* Selects all the nodes. @selection must be set to #GTK_SELECTION_MULTIPLE
* mode.
**/
void
gtk_tree_selection_select_all (GtkTreeSelection *selection)
{
GtkTreeSelectionPrivate *priv;
g_return_if_fail (GTK_IS_TREE_SELECTION (selection));
priv = selection->priv;
g_return_if_fail (priv->tree_view != NULL);
if (_gtk_tree_view_get_rbtree (priv->tree_view) == NULL ||
gtk_tree_view_get_model (priv->tree_view) == NULL)
return;
g_return_if_fail (priv->type == GTK_SELECTION_MULTIPLE);
if (gtk_tree_selection_real_select_all (selection))
g_signal_emit (selection, tree_selection_signals[CHANGED], 0);
}
static void
unselect_all_helper (GtkRBTree *tree,
GtkRBNode *node,
gpointer data)
{
struct _TempTuple *tuple = data;
if (node->children)
_gtk_rbtree_traverse (node->children,
node->children->root,
G_PRE_ORDER,
unselect_all_helper,
data);
if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
{
tuple->dirty = gtk_tree_selection_real_select_node (tuple->selection, tree, node, FALSE) || tuple->dirty;
}
}
static gboolean
gtk_tree_selection_real_unselect_all (GtkTreeSelection *selection)
{
GtkTreeSelectionPrivate *priv = selection->priv;
struct _TempTuple *tuple;
if (priv->type == GTK_SELECTION_SINGLE ||
priv->type == GTK_SELECTION_BROWSE)
{
GtkRBTree *tree = NULL;
GtkRBNode *node = NULL;
GtkTreePath *anchor_path;
anchor_path = _gtk_tree_view_get_anchor_path (priv->tree_view);
if (anchor_path == NULL)
return FALSE;
_gtk_tree_view_find_node (priv->tree_view,
anchor_path,
&tree,
&node);
gtk_tree_path_free (anchor_path);
if (tree == NULL)
return FALSE;
if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
{
if (gtk_tree_selection_real_select_node (selection, tree, node, FALSE))
{
_gtk_tree_view_set_anchor_path (priv->tree_view, NULL);
return TRUE;
}
}
return FALSE;
}
else
{
GtkRBTree *tree;
tuple = g_new (struct _TempTuple, 1);
tuple->selection = selection;
tuple->dirty = FALSE;
tree = _gtk_tree_view_get_rbtree (priv->tree_view);
_gtk_rbtree_traverse (tree, tree->root,
G_PRE_ORDER,
unselect_all_helper,
tuple);
if (tuple->dirty)
{
g_free (tuple);
return TRUE;
}
g_free (tuple);
return FALSE;
}
}
/**
* gtk_tree_selection_unselect_all:
* @selection: A #GtkTreeSelection.
*
* Unselects all the nodes.
**/
void
gtk_tree_selection_unselect_all (GtkTreeSelection *selection)
{
GtkTreeSelectionPrivate *priv;
g_return_if_fail (GTK_IS_TREE_SELECTION (selection));
priv = selection->priv;
g_return_if_fail (priv->tree_view != NULL);
if (_gtk_tree_view_get_rbtree (priv->tree_view) == NULL ||
gtk_tree_view_get_model (priv->tree_view) == NULL)
return;
if (gtk_tree_selection_real_unselect_all (selection))
g_signal_emit (selection, tree_selection_signals[CHANGED], 0);
}
enum
{
RANGE_SELECT,
RANGE_UNSELECT
};
static gint
gtk_tree_selection_real_modify_range (GtkTreeSelection *selection,
gint mode,
GtkTreePath *start_path,
GtkTreePath *end_path)
{
GtkTreeSelectionPrivate *priv = selection->priv;
GtkRBNode *start_node, *end_node;
GtkRBTree *start_tree, *end_tree;
GtkTreePath *anchor_path = NULL;
gboolean dirty = FALSE;
switch (gtk_tree_path_compare (start_path, end_path))
{
case 1:
_gtk_tree_view_find_node (priv->tree_view,
end_path,
&start_tree,
&start_node);
_gtk_tree_view_find_node (priv->tree_view,
start_path,
&end_tree,
&end_node);
anchor_path = start_path;
break;
case 0:
_gtk_tree_view_find_node (priv->tree_view,
start_path,
&start_tree,
&start_node);
end_tree = start_tree;
end_node = start_node;
anchor_path = start_path;
break;
case -1:
_gtk_tree_view_find_node (priv->tree_view,
start_path,
&start_tree,
&start_node);
_gtk_tree_view_find_node (priv->tree_view,
end_path,
&end_tree,
&end_node);
anchor_path = start_path;
break;
}
g_return_val_if_fail (start_node != NULL, FALSE);
g_return_val_if_fail (end_node != NULL, FALSE);
if (anchor_path)
_gtk_tree_view_set_anchor_path (priv->tree_view, anchor_path);
do
{
dirty |= gtk_tree_selection_real_select_node (selection, start_tree, start_node, (mode == RANGE_SELECT)?TRUE:FALSE);
if (start_node == end_node)
break;
if (start_node->children)
{
start_tree = start_node->children;
start_node = _gtk_rbtree_first (start_tree);
}
else
{
_gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
if (start_tree == NULL)
{
/* we just ran out of tree. That means someone passed in bogus values.
*/
return dirty;
}
}
}
while (TRUE);
return dirty;
}
/**
* gtk_tree_selection_select_range:
* @selection: A #GtkTreeSelection.
* @start_path: The initial node of the range.
* @end_path: The final node of the range.
*
* Selects a range of nodes, determined by @start_path and @end_path inclusive.
* @selection must be set to #GTK_SELECTION_MULTIPLE mode.
**/
void
gtk_tree_selection_select_range (GtkTreeSelection *selection,
GtkTreePath *start_path,
GtkTreePath *end_path)
{
GtkTreeSelectionPrivate *priv;
g_return_if_fail (GTK_IS_TREE_SELECTION (selection));
priv = selection->priv;
g_return_if_fail (priv->tree_view != NULL);
g_return_if_fail (priv->type == GTK_SELECTION_MULTIPLE);
g_return_if_fail (gtk_tree_view_get_model (priv->tree_view) != NULL);
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.
*
* Since: 2.2
**/
void
gtk_tree_selection_unselect_range (GtkTreeSelection *selection,
GtkTreePath *start_path,
GtkTreePath *end_path)
{
GtkTreeSelectionPrivate *priv;
g_return_if_fail (GTK_IS_TREE_SELECTION (selection));
priv = selection->priv;
g_return_if_fail (priv->tree_view != NULL);
g_return_if_fail (gtk_tree_view_get_model (priv->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);
}
gboolean
_gtk_tree_selection_row_is_selectable (GtkTreeSelection *selection,
GtkRBNode *node,
GtkTreePath *path)
{
GtkTreeSelectionPrivate *priv = selection->priv;
GtkTreeIter iter;
GtkTreeModel *model;
GtkTreeViewRowSeparatorFunc separator_func;
gpointer separator_data;
gboolean sensitive = FALSE;
model = gtk_tree_view_get_model (priv->tree_view);
_gtk_tree_view_get_row_separator_func (priv->tree_view,
&separator_func, &separator_data);
if (!gtk_tree_model_get_iter (model, &iter, path))
sensitive = TRUE;
if (!sensitive && separator_func)
{
/* never allow separators to be selected */
if ((* separator_func) (model, &iter, separator_data))
return FALSE;
}
if (priv->user_func)
return (*priv->user_func) (selection, model, path,
GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED),
priv->user_data);
else
return TRUE;
}
/* 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').
*/
void
_gtk_tree_selection_internal_select_node (GtkTreeSelection *selection,
GtkRBNode *node,
GtkRBTree *tree,
GtkTreePath *path,
GtkTreeSelectMode mode,
gboolean override_browse_mode)
{
GtkTreeSelectionPrivate *priv = selection->priv;
gint flags;
gint dirty = FALSE;
GtkTreePath *anchor_path = NULL;
if (priv->type == GTK_SELECTION_NONE)
return;
anchor_path = _gtk_tree_view_get_anchor_path (priv->tree_view);
if (priv->type == GTK_SELECTION_SINGLE ||
priv->type == GTK_SELECTION_BROWSE)
{
/* just unselect */
if (priv->type == GTK_SELECTION_BROWSE && override_browse_mode)
{
dirty = gtk_tree_selection_real_unselect_all (selection);
}
/* Did we try to select the same node again? */
else if (priv->type == GTK_SELECTION_SINGLE &&
anchor_path && gtk_tree_path_compare (path, anchor_path) == 0)
{
if ((mode & GTK_TREE_SELECT_MODE_TOGGLE) == GTK_TREE_SELECT_MODE_TOGGLE)
{
dirty = gtk_tree_selection_real_unselect_all (selection);
}
}
else
{
if (anchor_path)
{
/* We only want to select the new node if we can unselect the old one,
* and we can select the new one. */
dirty = _gtk_tree_selection_row_is_selectable (selection, node, path);
/* if dirty is FALSE, we weren't able to select the new one, otherwise, we try to
* unselect the new one
*/
if (dirty)
dirty = gtk_tree_selection_real_unselect_all (selection);
/* if dirty is TRUE at this point, we successfully unselected the
* old one, and can then select the new one */
if (dirty)
{
_gtk_tree_view_set_anchor_path (priv->tree_view, NULL);
if (gtk_tree_selection_real_select_node (selection, tree, node, TRUE))
_gtk_tree_view_set_anchor_path (priv->tree_view, path);
}
}
else
{
if (gtk_tree_selection_real_select_node (selection, tree, node, TRUE))
{
dirty = TRUE;
_gtk_tree_view_set_anchor_path (priv->tree_view, path);
}
}
}
}
else if (priv->type == GTK_SELECTION_MULTIPLE)
{
if ((mode & GTK_TREE_SELECT_MODE_EXTEND) == GTK_TREE_SELECT_MODE_EXTEND
&& (anchor_path == NULL))
{
_gtk_tree_view_set_anchor_path (priv->tree_view, path);
dirty = gtk_tree_selection_real_select_node (selection, tree, node, TRUE);
}
else if ((mode & (GTK_TREE_SELECT_MODE_EXTEND | GTK_TREE_SELECT_MODE_TOGGLE)) == (GTK_TREE_SELECT_MODE_EXTEND | GTK_TREE_SELECT_MODE_TOGGLE))
{
gtk_tree_selection_select_range (selection,
anchor_path,
path);
}
else if ((mode & GTK_TREE_SELECT_MODE_TOGGLE) == GTK_TREE_SELECT_MODE_TOGGLE)
{
flags = node->flags;
_gtk_tree_view_set_anchor_path (priv->tree_view, path);
if ((flags & GTK_RBNODE_IS_SELECTED) == GTK_RBNODE_IS_SELECTED)
dirty |= gtk_tree_selection_real_select_node (selection, tree, node, FALSE);
else
dirty |= gtk_tree_selection_real_select_node (selection, tree, node, TRUE);
}
else if ((mode & GTK_TREE_SELECT_MODE_EXTEND) == GTK_TREE_SELECT_MODE_EXTEND)
{
dirty = gtk_tree_selection_real_unselect_all (selection);
dirty |= gtk_tree_selection_real_modify_range (selection,
RANGE_SELECT,
anchor_path,
path);
}
else
{
dirty = gtk_tree_selection_real_unselect_all (selection);
_gtk_tree_view_set_anchor_path (priv->tree_view, path);
dirty |= gtk_tree_selection_real_select_node (selection, tree, node, TRUE);
}
}
if (anchor_path)
gtk_tree_path_free (anchor_path);
if (dirty)
g_signal_emit (selection, tree_selection_signals[CHANGED], 0);
}
void
_gtk_tree_selection_emit_changed (GtkTreeSelection *selection)
{
g_signal_emit (selection, tree_selection_signals[CHANGED], 0);
}
/* NOTE: Any {un,}selection ever done _MUST_ be done through this function!
*/
static gint
gtk_tree_selection_real_select_node (GtkTreeSelection *selection,
GtkRBTree *tree,
GtkRBNode *node,
gboolean select)
{
GtkTreeSelectionPrivate *priv = selection->priv;
gboolean toggle = FALSE;
GtkTreePath *path = NULL;
select = !! select;
if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED) != select)
{
path = _gtk_tree_path_new_from_rbtree (tree, node);
toggle = _gtk_tree_selection_row_is_selectable (selection, node, path);
gtk_tree_path_free (path);
}
if (toggle)
{
if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
{
GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SELECTED);
_gtk_tree_view_accessible_add_state (priv->tree_view, tree, node, GTK_CELL_RENDERER_SELECTED);
}
else
{
GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SELECTED);
_gtk_tree_view_accessible_remove_state (priv->tree_view, tree, node, GTK_CELL_RENDERER_SELECTED);
}
_gtk_tree_view_queue_draw_node (priv->tree_view, tree, node, NULL);
return TRUE;
}
return FALSE;
}
Reference in New Issue View Git Blame Copy Permalink