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gtk2/gtk/gtklistbox.c
Philip Withnall 8ce68a5194 gtklistbox: Only unparent header rows if they haven’t been reused 
It’s possible for code which uses a `GtkListBox` to reuse a single
header row, and move it around between rows. For example, this might
happen if the code has interactive widgets (like buttons) in the row,
and doesn’t want to continually recreate them and reattach signals to
them whenever the row headers change.

Unfortunately, this was broken, as the old header widget was
unconditionally unparented, even if it had just been set as the header
for a different row in the same `GtkListBox`. This left it assigned as
a child widget in the `GtkListBox` (so it was iterated over by
`forall`), but without its parent widget set.

Fix that by only unparenting the header if it hasn’t already been
assigned as the parent of a different row.

Signed-off-by: Philip Withnall <withnall@endlessm.com>
2019-10-04 14:30:33 -04:00

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/*
* Copyright (C) 2012 Alexander Larsson <alexl@redhat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gtkactionhelper.h"
#include "gtkadjustmentprivate.h"
#include "gtkcssnodeprivate.h"
#include "gtklistbox.h"
#include "gtkwidget.h"
#include "gtkmarshalers.h"
#include "gtkprivate.h"
#include "gtkintl.h"
#include "gtkwidgetprivate.h"
#include "gtkcontainerprivate.h"
#include "gtkcsscustomgadgetprivate.h"
#include <float.h>
#include <math.h>
#include <string.h>
#include "a11y/gtklistboxaccessibleprivate.h"
#include "a11y/gtklistboxrowaccessible.h"
/**
* SECTION:gtklistbox
* @Short_description: A list container
* @Title: GtkListBox
* @See_also: #GtkScrolledWindow
*
* A GtkListBox is a vertical container that contains GtkListBoxRow
* children. These rows can by dynamically sorted and filtered, and
* headers can be added dynamically depending on the row content.
* It also allows keyboard and mouse navigation and selection like
* a typical list.
*
* Using GtkListBox is often an alternative to #GtkTreeView, especially
* when the list contents has a more complicated layout than what is allowed
* by a #GtkCellRenderer, or when the contents is interactive (i.e. has a
* button in it).
*
* Although a #GtkListBox must have only #GtkListBoxRow children you can
* add any kind of widget to it via gtk_container_add(), and a #GtkListBoxRow
* widget will automatically be inserted between the list and the widget.
*
* #GtkListBoxRows can be marked as activatable or selectable. If a row
* is activatable, #GtkListBox::row-activated will be emitted for it when
* the user tries to activate it. If it is selectable, the row will be marked
* as selected when the user tries to select it.
*
* The GtkListBox widget was added in GTK+ 3.10.
*
* # GtkListBox as GtkBuildable
*
* The GtkListBox implementation of the #GtkBuildable interface supports
* setting a child as the placeholder by specifying “placeholder” as the “type”
* attribute of a <child> element. See gtk_list_box_set_placeholder() for info.
*
* # CSS nodes
*
* |[<!-- language="plain" -->
* list
* ╰── row[.activatable]
* ]|
*
* GtkListBox uses a single CSS node named list. Each GtkListBoxRow uses
* a single CSS node named row. The row nodes get the .activatable
* style class added when appropriate.
*/
typedef struct
{
GSequence *children;
GHashTable *header_hash;
GtkWidget *placeholder;
GtkCssGadget *gadget;
GtkListBoxSortFunc sort_func;
gpointer sort_func_target;
GDestroyNotify sort_func_target_destroy_notify;
GtkListBoxFilterFunc filter_func;
gpointer filter_func_target;
GDestroyNotify filter_func_target_destroy_notify;
GtkListBoxUpdateHeaderFunc update_header_func;
gpointer update_header_func_target;
GDestroyNotify update_header_func_target_destroy_notify;
GtkListBoxRow *selected_row;
GtkListBoxRow *prelight_row;
GtkListBoxRow *cursor_row;
gboolean active_row_active;
GtkListBoxRow *active_row;
GtkSelectionMode selection_mode;
GtkAdjustment *adjustment;
gboolean activate_single_click;
GtkGesture *multipress_gesture;
/* DnD */
GtkListBoxRow *drag_highlighted_row;
int n_visible_rows;
gboolean in_widget;
GListModel *bound_model;
GtkListBoxCreateWidgetFunc create_widget_func;
gpointer create_widget_func_data;
GDestroyNotify create_widget_func_data_destroy;
} GtkListBoxPrivate;
typedef struct
{
GSequenceIter *iter;
GtkWidget *header;
GtkCssGadget *gadget;
GtkActionHelper *action_helper;
gint y;
gint height;
guint visible :1;
guint selected :1;
guint activatable :1;
guint selectable :1;
} GtkListBoxRowPrivate;
enum {
ROW_SELECTED,
ROW_ACTIVATED,
ACTIVATE_CURSOR_ROW,
TOGGLE_CURSOR_ROW,
MOVE_CURSOR,
SELECTED_ROWS_CHANGED,
SELECT_ALL,
UNSELECT_ALL,
LAST_SIGNAL
};
enum {
ROW__ACTIVATE,
ROW__LAST_SIGNAL
};
enum {
PROP_0,
PROP_SELECTION_MODE,
PROP_ACTIVATE_ON_SINGLE_CLICK,
LAST_PROPERTY
};
enum {
ROW_PROP_0,
ROW_PROP_ACTIVATABLE,
ROW_PROP_SELECTABLE,
/* actionable properties */
ROW_PROP_ACTION_NAME,
ROW_PROP_ACTION_TARGET,
LAST_ROW_PROPERTY = ROW_PROP_ACTION_NAME
};
#define BOX_PRIV(box) ((GtkListBoxPrivate*)gtk_list_box_get_instance_private ((GtkListBox*)(box)))
#define ROW_PRIV(row) ((GtkListBoxRowPrivate*)gtk_list_box_row_get_instance_private ((GtkListBoxRow*)(row)))
static void gtk_list_box_buildable_interface_init (GtkBuildableIface *iface);
static void gtk_list_box_row_actionable_iface_init (GtkActionableInterface *iface);
G_DEFINE_TYPE_WITH_CODE (GtkListBox, gtk_list_box, GTK_TYPE_CONTAINER,
G_ADD_PRIVATE (GtkListBox)
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_list_box_buildable_interface_init))
G_DEFINE_TYPE_WITH_CODE (GtkListBoxRow, gtk_list_box_row, GTK_TYPE_BIN,
G_ADD_PRIVATE (GtkListBoxRow)
G_IMPLEMENT_INTERFACE (GTK_TYPE_ACTIONABLE, gtk_list_box_row_actionable_iface_init))
static void gtk_list_box_apply_filter_all (GtkListBox *box);
static void gtk_list_box_update_header (GtkListBox *box,
GSequenceIter *iter);
static GSequenceIter * gtk_list_box_get_next_visible (GtkListBox *box,
GSequenceIter *iter);
static void gtk_list_box_apply_filter (GtkListBox *box,
GtkListBoxRow *row);
static void gtk_list_box_add_move_binding (GtkBindingSet *binding_set,
guint keyval,
GdkModifierType modmask,
GtkMovementStep step,
gint count);
static void gtk_list_box_update_cursor (GtkListBox *box,
GtkListBoxRow *row,
gboolean grab_focus);
static void gtk_list_box_update_prelight (GtkListBox *box,
GtkListBoxRow *row);
static void gtk_list_box_update_active (GtkListBox *box,
GtkListBoxRow *row);
static gboolean gtk_list_box_enter_notify_event (GtkWidget *widget,
GdkEventCrossing *event);
static gboolean gtk_list_box_leave_notify_event (GtkWidget *widget,
GdkEventCrossing *event);
static gboolean gtk_list_box_motion_notify_event (GtkWidget *widget,
GdkEventMotion *event);
static void gtk_list_box_show (GtkWidget *widget);
static gboolean gtk_list_box_focus (GtkWidget *widget,
GtkDirectionType direction);
static GSequenceIter* gtk_list_box_get_previous_visible (GtkListBox *box,
GSequenceIter *iter);
static GtkListBoxRow *gtk_list_box_get_first_focusable (GtkListBox *box);
static GtkListBoxRow *gtk_list_box_get_last_focusable (GtkListBox *box);
static gboolean gtk_list_box_draw (GtkWidget *widget,
cairo_t *cr);
static void gtk_list_box_realize (GtkWidget *widget);
static void gtk_list_box_add (GtkContainer *container,
GtkWidget *widget);
static void gtk_list_box_remove (GtkContainer *container,
GtkWidget *widget);
static void gtk_list_box_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_target);
static void gtk_list_box_compute_expand (GtkWidget *widget,
gboolean *hexpand,
gboolean *vexpand);
static GType gtk_list_box_child_type (GtkContainer *container);
static GtkSizeRequestMode gtk_list_box_get_request_mode (GtkWidget *widget);
static void gtk_list_box_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_list_box_drag_leave (GtkWidget *widget,
GdkDragContext *context,
guint time_);
static void gtk_list_box_activate_cursor_row (GtkListBox *box);
static void gtk_list_box_toggle_cursor_row (GtkListBox *box);
static void gtk_list_box_move_cursor (GtkListBox *box,
GtkMovementStep step,
gint count);
static void gtk_list_box_finalize (GObject *obj);
static void gtk_list_box_parent_set (GtkWidget *widget,
GtkWidget *prev_parent);
static void gtk_list_box_get_preferred_height (GtkWidget *widget,
gint *minimum_height,
gint *natural_height);
static void gtk_list_box_get_preferred_height_for_width (GtkWidget *widget,
gint width,
gint *minimum_height,
gint *natural_height);
static void gtk_list_box_get_preferred_width (GtkWidget *widget,
gint *minimum_width,
gint *natural_width);
static void gtk_list_box_get_preferred_width_for_height (GtkWidget *widget,
gint height,
gint *minimum_width,
gint *natural_width);
static void gtk_list_box_select_row_internal (GtkListBox *box,
GtkListBoxRow *row);
static void gtk_list_box_unselect_row_internal (GtkListBox *box,
GtkListBoxRow *row);
static void gtk_list_box_select_all_between (GtkListBox *box,
GtkListBoxRow *row1,
GtkListBoxRow *row2,
gboolean modify);
static gboolean gtk_list_box_unselect_all_internal (GtkListBox *box);
static void gtk_list_box_selected_rows_changed (GtkListBox *box);
static void gtk_list_box_multipress_gesture_pressed (GtkGestureMultiPress *gesture,
guint n_press,
gdouble x,
gdouble y,
GtkListBox *box);
static void gtk_list_box_multipress_gesture_released (GtkGestureMultiPress *gesture,
guint n_press,
gdouble x,
gdouble y,
GtkListBox *box);
static void gtk_list_box_update_row_styles (GtkListBox *box);
static void gtk_list_box_update_row_style (GtkListBox *box,
GtkListBoxRow *row);
static void gtk_list_box_bound_model_changed (GListModel *list,
guint position,
guint removed,
guint added,
gpointer user_data);
static void gtk_list_box_check_model_compat (GtkListBox *box);
static void gtk_list_box_measure (GtkCssGadget *gadget,
GtkOrientation orientation,
gint for_size,
gint *minimum_size,
gint *natural_size,
gint *minimum_baseline,
gint *natural_baseline,
gpointer data);
static void gtk_list_box_allocate (GtkCssGadget *gadget,
const GtkAllocation *allocation,
int baseline,
GtkAllocation *out_clip,
gpointer data);
static gboolean gtk_list_box_render (GtkCssGadget *gadget,
cairo_t *cr,
int x,
int y,
int width,
int height,
gpointer data);
static GParamSpec *properties[LAST_PROPERTY] = { NULL, };
static guint signals[LAST_SIGNAL] = { 0 };
static GParamSpec *row_properties[LAST_ROW_PROPERTY] = { NULL, };
static guint row_signals[ROW__LAST_SIGNAL] = { 0 };
/**
* gtk_list_box_new:
*
* Creates a new #GtkListBox container.
*
* Returns: a new #GtkListBox
*
* Since: 3.10
*/
GtkWidget *
gtk_list_box_new (void)
{
return g_object_new (GTK_TYPE_LIST_BOX, NULL);
}
static void
gtk_list_box_get_property (GObject *obj,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GtkListBoxPrivate *priv = BOX_PRIV (obj);
switch (property_id)
{
case PROP_SELECTION_MODE:
g_value_set_enum (value, priv->selection_mode);
break;
case PROP_ACTIVATE_ON_SINGLE_CLICK:
g_value_set_boolean (value, priv->activate_single_click);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, property_id, pspec);
break;
}
}
static void
gtk_list_box_set_property (GObject *obj,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GtkListBox *box = GTK_LIST_BOX (obj);
switch (property_id)
{
case PROP_SELECTION_MODE:
gtk_list_box_set_selection_mode (box, g_value_get_enum (value));
break;
case PROP_ACTIVATE_ON_SINGLE_CLICK:
gtk_list_box_set_activate_on_single_click (box, g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, property_id, pspec);
break;
}
}
static void
gtk_list_box_finalize (GObject *obj)
{
GtkListBoxPrivate *priv = BOX_PRIV (obj);
if (priv->sort_func_target_destroy_notify != NULL)
priv->sort_func_target_destroy_notify (priv->sort_func_target);
if (priv->filter_func_target_destroy_notify != NULL)
priv->filter_func_target_destroy_notify (priv->filter_func_target);
if (priv->update_header_func_target_destroy_notify != NULL)
priv->update_header_func_target_destroy_notify (priv->update_header_func_target);
g_clear_object (&priv->adjustment);
g_clear_object (&priv->drag_highlighted_row);
g_clear_object (&priv->multipress_gesture);
g_sequence_free (priv->children);
g_hash_table_unref (priv->header_hash);
if (priv->bound_model)
{
if (priv->create_widget_func_data_destroy)
priv->create_widget_func_data_destroy (priv->create_widget_func_data);
g_signal_handlers_disconnect_by_func (priv->bound_model, gtk_list_box_bound_model_changed, obj);
g_clear_object (&priv->bound_model);
}
g_clear_object (&priv->gadget);
G_OBJECT_CLASS (gtk_list_box_parent_class)->finalize (obj);
}
static void
gtk_list_box_dispose (GObject *object)
{
GtkListBoxPrivate *priv = BOX_PRIV (object);
if (priv->placeholder)
{
gtk_widget_unparent (priv->placeholder);
priv->placeholder = NULL;
}
G_OBJECT_CLASS (gtk_list_box_parent_class)->dispose (object);
}
static void
gtk_list_box_class_init (GtkListBoxClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass);
GtkBindingSet *binding_set;
gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_LIST_BOX_ACCESSIBLE);
object_class->get_property = gtk_list_box_get_property;
object_class->set_property = gtk_list_box_set_property;
object_class->finalize = gtk_list_box_finalize;
object_class->dispose = gtk_list_box_dispose;
widget_class->enter_notify_event = gtk_list_box_enter_notify_event;
widget_class->leave_notify_event = gtk_list_box_leave_notify_event;
widget_class->motion_notify_event = gtk_list_box_motion_notify_event;
widget_class->show = gtk_list_box_show;
widget_class->focus = gtk_list_box_focus;
widget_class->draw = gtk_list_box_draw;
widget_class->realize = gtk_list_box_realize;
widget_class->compute_expand = gtk_list_box_compute_expand;
widget_class->get_request_mode = gtk_list_box_get_request_mode;
widget_class->get_preferred_height = gtk_list_box_get_preferred_height;
widget_class->get_preferred_height_for_width = gtk_list_box_get_preferred_height_for_width;
widget_class->get_preferred_width = gtk_list_box_get_preferred_width;
widget_class->get_preferred_width_for_height = gtk_list_box_get_preferred_width_for_height;
widget_class->size_allocate = gtk_list_box_size_allocate;
widget_class->drag_leave = gtk_list_box_drag_leave;
widget_class->parent_set = gtk_list_box_parent_set;
container_class->add = gtk_list_box_add;
container_class->remove = gtk_list_box_remove;
container_class->forall = gtk_list_box_forall;
container_class->child_type = gtk_list_box_child_type;
klass->activate_cursor_row = gtk_list_box_activate_cursor_row;
klass->toggle_cursor_row = gtk_list_box_toggle_cursor_row;
klass->move_cursor = gtk_list_box_move_cursor;
klass->select_all = gtk_list_box_select_all;
klass->unselect_all = gtk_list_box_unselect_all;
klass->selected_rows_changed = gtk_list_box_selected_rows_changed;
properties[PROP_SELECTION_MODE] =
g_param_spec_enum ("selection-mode",
P_("Selection mode"),
P_("The selection mode"),
GTK_TYPE_SELECTION_MODE,
GTK_SELECTION_SINGLE,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY);
properties[PROP_ACTIVATE_ON_SINGLE_CLICK] =
g_param_spec_boolean ("activate-on-single-click",
P_("Activate on Single Click"),
P_("Activate row on a single click"),
TRUE,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY);
g_object_class_install_properties (object_class, LAST_PROPERTY, properties);
/**
* GtkListBox::row-selected:
* @box: the #GtkListBox
* @row: (nullable): the selected row
*
* The ::row-selected signal is emitted when a new row is selected, or
* (with a %NULL @row) when the selection is cleared.
*
* When the @box is using #GTK_SELECTION_MULTIPLE, this signal will not
* give you the full picture of selection changes, and you should use
* the #GtkListBox::selected-rows-changed signal instead.
*
* Since: 3.10
*/
signals[ROW_SELECTED] =
g_signal_new (I_("row-selected"),
GTK_TYPE_LIST_BOX,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkListBoxClass, row_selected),
NULL, NULL,
NULL,
G_TYPE_NONE, 1,
GTK_TYPE_LIST_BOX_ROW);
/**
* GtkListBox::selected-rows-changed:
* @box: the #GtkListBox on wich the signal is emitted
*
* The ::selected-rows-changed signal is emitted when the
* set of selected rows changes.
*
* Since: 3.14
*/
signals[SELECTED_ROWS_CHANGED] = g_signal_new (I_("selected-rows-changed"),
GTK_TYPE_LIST_BOX,
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkListBoxClass, selected_rows_changed),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
/**
* GtkListBox::select-all:
* @box: the #GtkListBox on which the signal is emitted
*
* The ::select-all signal is a [keybinding signal][GtkBindingSignal]
* which gets emitted to select all children of the box, if the selection
* mode permits it.
*
* The default bindings for this signal is Ctrl-a.
*
* Since: 3.14
*/
signals[SELECT_ALL] = g_signal_new (I_("select-all"),
GTK_TYPE_LIST_BOX,
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkListBoxClass, select_all),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
/**
* GtkListBox::unselect-all:
* @box: the #GtkListBox on which the signal is emitted
*
* The ::unselect-all signal is a [keybinding signal][GtkBindingSignal]
* which gets emitted to unselect all children of the box, if the selection
* mode permits it.
*
* The default bindings for this signal is Ctrl-Shift-a.
*
* Since: 3.14
*/
signals[UNSELECT_ALL] = g_signal_new (I_("unselect-all"),
GTK_TYPE_LIST_BOX,
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkListBoxClass, unselect_all),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
/**
* GtkListBox::row-activated:
* @box: the #GtkListBox
* @row: the activated row
*
* The ::row-activated signal is emitted when a row has been activated by the user.
*
* Since: 3.10
*/
signals[ROW_ACTIVATED] =
g_signal_new (I_("row-activated"),
GTK_TYPE_LIST_BOX,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkListBoxClass, row_activated),
NULL, NULL,
NULL,
G_TYPE_NONE, 1,
GTK_TYPE_LIST_BOX_ROW);
signals[ACTIVATE_CURSOR_ROW] =
g_signal_new (I_("activate-cursor-row"),
GTK_TYPE_LIST_BOX,
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkListBoxClass, activate_cursor_row),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
signals[TOGGLE_CURSOR_ROW] =
g_signal_new (I_("toggle-cursor-row"),
GTK_TYPE_LIST_BOX,
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkListBoxClass, toggle_cursor_row),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
signals[MOVE_CURSOR] =
g_signal_new (I_("move-cursor"),
GTK_TYPE_LIST_BOX,
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkListBoxClass, move_cursor),
NULL, NULL,
_gtk_marshal_VOID__ENUM_INT,
G_TYPE_NONE, 2,
GTK_TYPE_MOVEMENT_STEP, G_TYPE_INT);
g_signal_set_va_marshaller (signals[MOVE_CURSOR],
G_TYPE_FROM_CLASS (klass),
_gtk_marshal_VOID__ENUM_INTv);
widget_class->activate_signal = signals[ACTIVATE_CURSOR_ROW];
binding_set = gtk_binding_set_by_class (klass);
gtk_list_box_add_move_binding (binding_set, GDK_KEY_Home, 0,
GTK_MOVEMENT_BUFFER_ENDS, -1);
gtk_list_box_add_move_binding (binding_set, GDK_KEY_KP_Home, 0,
GTK_MOVEMENT_BUFFER_ENDS, -1);
gtk_list_box_add_move_binding (binding_set, GDK_KEY_End, 0,
GTK_MOVEMENT_BUFFER_ENDS, 1);
gtk_list_box_add_move_binding (binding_set, GDK_KEY_KP_End, 0,
GTK_MOVEMENT_BUFFER_ENDS, 1);
gtk_list_box_add_move_binding (binding_set, GDK_KEY_Up, 0,
GTK_MOVEMENT_DISPLAY_LINES, -1);
gtk_list_box_add_move_binding (binding_set, GDK_KEY_KP_Up, 0,
GTK_MOVEMENT_DISPLAY_LINES, -1);
gtk_list_box_add_move_binding (binding_set, GDK_KEY_Down, 0,
GTK_MOVEMENT_DISPLAY_LINES, 1);
gtk_list_box_add_move_binding (binding_set, GDK_KEY_KP_Down, 0,
GTK_MOVEMENT_DISPLAY_LINES, 1);
gtk_list_box_add_move_binding (binding_set, GDK_KEY_Page_Up, 0,
GTK_MOVEMENT_PAGES, -1);
gtk_list_box_add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0,
GTK_MOVEMENT_PAGES, -1);
gtk_list_box_add_move_binding (binding_set, GDK_KEY_Page_Down, 0,
GTK_MOVEMENT_PAGES, 1);
gtk_list_box_add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0,
GTK_MOVEMENT_PAGES, 1);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_CONTROL_MASK,
"toggle-cursor-row", 0, NULL);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_CONTROL_MASK,
"toggle-cursor-row", 0, NULL);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK,
"select-all", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
"unselect-all", 0);
gtk_widget_class_set_css_name (widget_class, "list");
}
static void
gtk_list_box_init (GtkListBox *box)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
GtkWidget *widget = GTK_WIDGET (box);
GtkCssNode *widget_node;
gtk_widget_set_has_window (widget, TRUE);
priv->selection_mode = GTK_SELECTION_SINGLE;
priv->activate_single_click = TRUE;
priv->children = g_sequence_new (NULL);
priv->header_hash = g_hash_table_new_full (g_direct_hash, g_direct_equal, NULL, NULL);
priv->multipress_gesture = gtk_gesture_multi_press_new (widget);
gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (priv->multipress_gesture),
GTK_PHASE_BUBBLE);
gtk_gesture_single_set_touch_only (GTK_GESTURE_SINGLE (priv->multipress_gesture),
FALSE);
gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (priv->multipress_gesture),
GDK_BUTTON_PRIMARY);
g_signal_connect (priv->multipress_gesture, "pressed",
G_CALLBACK (gtk_list_box_multipress_gesture_pressed), box);
g_signal_connect (priv->multipress_gesture, "released",
G_CALLBACK (gtk_list_box_multipress_gesture_released), box);
widget_node = gtk_widget_get_css_node (GTK_WIDGET (box));
priv->gadget = gtk_css_custom_gadget_new_for_node (widget_node,
GTK_WIDGET (box),
gtk_list_box_measure,
gtk_list_box_allocate,
gtk_list_box_render,
NULL,
NULL);
}
/**
* gtk_list_box_get_selected_row:
* @box: a #GtkListBox
*
* Gets the selected row.
*
* Note that the box may allow multiple selection, in which
* case you should use gtk_list_box_selected_foreach() to
* find all selected rows.
*
* Returns: (transfer none): the selected row
*
* Since: 3.10
*/
GtkListBoxRow *
gtk_list_box_get_selected_row (GtkListBox *box)
{
g_return_val_if_fail (GTK_IS_LIST_BOX (box), NULL);
return BOX_PRIV (box)->selected_row;
}
/**
* gtk_list_box_get_row_at_index:
* @box: a #GtkListBox
* @index_: the index of the row
*
* Gets the n-th child in the list (not counting headers).
* If @_index is negative or larger than the number of items in the
* list, %NULL is returned.
*
* Returns: (transfer none) (nullable): the child #GtkWidget or %NULL
*
* Since: 3.10
*/
GtkListBoxRow *
gtk_list_box_get_row_at_index (GtkListBox *box,
gint index_)
{
GSequenceIter *iter;
g_return_val_if_fail (GTK_IS_LIST_BOX (box), NULL);
iter = g_sequence_get_iter_at_pos (BOX_PRIV (box)->children, index_);
if (!g_sequence_iter_is_end (iter))
return g_sequence_get (iter);
return NULL;
}
static int
row_y_cmp_func (gconstpointer a,
gconstpointer b,
gpointer user_data)
{
int y = GPOINTER_TO_INT (b);
GtkListBoxRowPrivate *row_priv = ROW_PRIV (a);
if (y < row_priv->y)
return 1;
else if (y >= row_priv->y + row_priv->height)
return -1;
return 0;
}
/**
* gtk_list_box_get_row_at_y:
* @box: a #GtkListBox
* @y: position
*
* Gets the row at the @y position.
*
* Returns: (transfer none) (nullable): the row or %NULL
* in case no row exists for the given y coordinate.
*
* Since: 3.10
*/
GtkListBoxRow *
gtk_list_box_get_row_at_y (GtkListBox *box,
gint y)
{
GSequenceIter *iter;
g_return_val_if_fail (GTK_IS_LIST_BOX (box), NULL);
iter = g_sequence_lookup (BOX_PRIV (box)->children,
GINT_TO_POINTER (y),
row_y_cmp_func,
NULL);
if (iter)
return GTK_LIST_BOX_ROW (g_sequence_get (iter));
return NULL;
}
/**
* gtk_list_box_select_row:
* @box: a #GtkListBox
* @row: (allow-none): The row to select or %NULL
*
* Make @row the currently selected row.
*
* Since: 3.10
*/
void
gtk_list_box_select_row (GtkListBox *box,
GtkListBoxRow *row)
{
gboolean dirty = FALSE;
g_return_if_fail (GTK_IS_LIST_BOX (box));
g_return_if_fail (row == NULL || GTK_IS_LIST_BOX_ROW (row));
if (row)
gtk_list_box_select_row_internal (box, row);
else
dirty = gtk_list_box_unselect_all_internal (box);
if (dirty)
{
g_signal_emit (box, signals[ROW_SELECTED], 0, NULL);
g_signal_emit (box, signals[SELECTED_ROWS_CHANGED], 0);
}
}
/**
* gtk_list_box_unselect_row:
* @box: a #GtkListBox
* @row: the row to unselected
*
* Unselects a single row of @box, if the selection mode allows it.
*
* Since: 3.14
*/
void
gtk_list_box_unselect_row (GtkListBox *box,
GtkListBoxRow *row)
{
g_return_if_fail (GTK_IS_LIST_BOX (box));
g_return_if_fail (GTK_IS_LIST_BOX_ROW (row));
gtk_list_box_unselect_row_internal (box, row);
}
/**
* gtk_list_box_select_all:
* @box: a #GtkListBox
*
* Select all children of @box, if the selection mode allows it.
*
* Since: 3.14
*/
void
gtk_list_box_select_all (GtkListBox *box)
{
g_return_if_fail (GTK_IS_LIST_BOX (box));
if (BOX_PRIV (box)->selection_mode != GTK_SELECTION_MULTIPLE)
return;
if (g_sequence_get_length (BOX_PRIV (box)->children) > 0)
{
gtk_list_box_select_all_between (box, NULL, NULL, FALSE);
g_signal_emit (box, signals[SELECTED_ROWS_CHANGED], 0);
}
}
/**
* gtk_list_box_unselect_all:
* @box: a #GtkListBox
*
* Unselect all children of @box, if the selection mode allows it.
*
* Since: 3.14
*/
void
gtk_list_box_unselect_all (GtkListBox *box)
{
gboolean dirty = FALSE;
g_return_if_fail (GTK_IS_LIST_BOX (box));
if (BOX_PRIV (box)->selection_mode == GTK_SELECTION_BROWSE)
return;
dirty = gtk_list_box_unselect_all_internal (box);
if (dirty)
{
g_signal_emit (box, signals[ROW_SELECTED], 0, NULL);
g_signal_emit (box, signals[SELECTED_ROWS_CHANGED], 0);
}
}
static void
gtk_list_box_selected_rows_changed (GtkListBox *box)
{
_gtk_list_box_accessible_selection_changed (box);
}
/**
* GtkListBoxForeachFunc:
* @box: a #GtkListBox
* @row: a #GtkListBoxRow
* @user_data: (closure): user data
*
* A function used by gtk_list_box_selected_foreach().
* It will be called on every selected child of the @box.
*
* Since: 3.14
*/
/**
* gtk_list_box_selected_foreach:
* @box: a #GtkListBox
* @func: (scope call): the function to call for each selected child
* @data: user data to pass to the function
*
* Calls a function for each selected child.
*
* Note that the selection cannot be modified from within this function.
*
* Since: 3.14
*/
void
gtk_list_box_selected_foreach (GtkListBox *box,
GtkListBoxForeachFunc func,
gpointer data)
{
GtkListBoxRow *row;
GSequenceIter *iter;
g_return_if_fail (GTK_IS_LIST_BOX (box));
for (iter = g_sequence_get_begin_iter (BOX_PRIV (box)->children);
!g_sequence_iter_is_end (iter);
iter = g_sequence_iter_next (iter))
{
row = g_sequence_get (iter);
if (gtk_list_box_row_is_selected (row))
(*func) (box, row, data);
}
}
/**
* gtk_list_box_get_selected_rows:
* @box: a #GtkListBox
*
* Creates a list of all selected children.
*
* Returns: (element-type GtkListBoxRow) (transfer container):
* A #GList containing the #GtkWidget for each selected child.
* Free with g_list_free() when done.
*
* Since: 3.14
*/
GList *
gtk_list_box_get_selected_rows (GtkListBox *box)
{
GtkListBoxRow *row;
GSequenceIter *iter;
GList *selected = NULL;
g_return_val_if_fail (GTK_IS_LIST_BOX (box), NULL);
for (iter = g_sequence_get_begin_iter (BOX_PRIV (box)->children);
!g_sequence_iter_is_end (iter);
iter = g_sequence_iter_next (iter))
{
row = g_sequence_get (iter);
if (gtk_list_box_row_is_selected (row))
selected = g_list_prepend (selected, row);
}
return g_list_reverse (selected);
}
/**
* gtk_list_box_set_placeholder:
* @box: a #GtkListBox
* @placeholder: (allow-none): a #GtkWidget or %NULL
*
* Sets the placeholder widget that is shown in the list when
* it doesn't display any visible children.
*
* Since: 3.10
*/
void
gtk_list_box_set_placeholder (GtkListBox *box,
GtkWidget *placeholder)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
g_return_if_fail (GTK_IS_LIST_BOX (box));
if (priv->placeholder)
{
gtk_widget_unparent (priv->placeholder);
gtk_widget_queue_resize (GTK_WIDGET (box));
}
priv->placeholder = placeholder;
if (placeholder)
{
gtk_widget_set_parent (GTK_WIDGET (placeholder), GTK_WIDGET (box));
gtk_widget_set_child_visible (GTK_WIDGET (placeholder),
priv->n_visible_rows == 0);
}
}
/**
* gtk_list_box_set_adjustment:
* @box: a #GtkListBox
* @adjustment: (allow-none): the adjustment, or %NULL
*
* Sets the adjustment (if any) that the widget uses to
* for vertical scrolling. For instance, this is used
* to get the page size for PageUp/Down key handling.
*
* In the normal case when the @box is packed inside
* a #GtkScrolledWindow the adjustment from that will
* be picked up automatically, so there is no need
* to manually do that.
*
* Since: 3.10
*/
void
gtk_list_box_set_adjustment (GtkListBox *box,
GtkAdjustment *adjustment)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
g_return_if_fail (GTK_IS_LIST_BOX (box));
g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
if (adjustment)
g_object_ref_sink (adjustment);
if (priv->adjustment)
g_object_unref (priv->adjustment);
priv->adjustment = adjustment;
}
/**
* gtk_list_box_get_adjustment:
* @box: a #GtkListBox
*
* Gets the adjustment (if any) that the widget uses to
* for vertical scrolling.
*
* Returns: (transfer none): the adjustment
*
* Since: 3.10
*/
GtkAdjustment *
gtk_list_box_get_adjustment (GtkListBox *box)
{
g_return_val_if_fail (GTK_IS_LIST_BOX (box), NULL);
return BOX_PRIV (box)->adjustment;
}
static void
adjustment_changed (GObject *object,
GParamSpec *pspec,
gpointer data)
{
GtkAdjustment *adjustment;
adjustment = gtk_scrollable_get_vadjustment (GTK_SCROLLABLE (object));
gtk_list_box_set_adjustment (GTK_LIST_BOX (data), adjustment);
}
static void
gtk_list_box_parent_set (GtkWidget *widget,
GtkWidget *prev_parent)
{
GtkWidget *parent;
parent = gtk_widget_get_parent (widget);
if (prev_parent && GTK_IS_SCROLLABLE (prev_parent))
g_signal_handlers_disconnect_by_func (prev_parent,
G_CALLBACK (adjustment_changed), widget);
if (parent && GTK_IS_SCROLLABLE (parent))
{
adjustment_changed (G_OBJECT (parent), NULL, widget);
g_signal_connect (parent, "notify::vadjustment",
G_CALLBACK (adjustment_changed), widget);
}
else
gtk_list_box_set_adjustment (GTK_LIST_BOX (widget), NULL);
}
/**
* gtk_list_box_set_selection_mode:
* @box: a #GtkListBox
* @mode: The #GtkSelectionMode
*
* Sets how selection works in the listbox.
* See #GtkSelectionMode for details.
*
* Since: 3.10
*/
void
gtk_list_box_set_selection_mode (GtkListBox *box,
GtkSelectionMode mode)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
gboolean dirty = FALSE;
g_return_if_fail (GTK_IS_LIST_BOX (box));
if (priv->selection_mode == mode)
return;
if (mode == GTK_SELECTION_NONE ||
priv->selection_mode == GTK_SELECTION_MULTIPLE)
dirty = gtk_list_box_unselect_all_internal (box);
priv->selection_mode = mode;
gtk_list_box_update_row_styles (box);
g_object_notify_by_pspec (G_OBJECT (box), properties[PROP_SELECTION_MODE]);
if (dirty)
{
g_signal_emit (box, signals[ROW_SELECTED], 0, NULL);
g_signal_emit (box, signals[SELECTED_ROWS_CHANGED], 0);
}
}
/**
* gtk_list_box_get_selection_mode:
* @box: a #GtkListBox
*
* Gets the selection mode of the listbox.
*
* Returns: a #GtkSelectionMode
*
* Since: 3.10
*/
GtkSelectionMode
gtk_list_box_get_selection_mode (GtkListBox *box)
{
g_return_val_if_fail (GTK_IS_LIST_BOX (box), GTK_SELECTION_NONE);
return BOX_PRIV (box)->selection_mode;
}
/**
* gtk_list_box_set_filter_func:
* @box: a #GtkListBox
* @filter_func: (closure user_data) (allow-none): callback that lets you filter which rows to show
* @user_data: user data passed to @filter_func
* @destroy: destroy notifier for @user_data
*
* By setting a filter function on the @box one can decide dynamically which
* of the rows to show. For instance, to implement a search function on a list that
* filters the original list to only show the matching rows.
*
* The @filter_func will be called for each row after the call, and it will
* continue to be called each time a row changes (via gtk_list_box_row_changed()) or
* when gtk_list_box_invalidate_filter() is called.
*
* Note that using a filter function is incompatible with using a model
* (see gtk_list_box_bind_model()).
*
* Since: 3.10
*/
void
gtk_list_box_set_filter_func (GtkListBox *box,
GtkListBoxFilterFunc filter_func,
gpointer user_data,
GDestroyNotify destroy)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
g_return_if_fail (GTK_IS_LIST_BOX (box));
if (priv->filter_func_target_destroy_notify != NULL)
priv->filter_func_target_destroy_notify (priv->filter_func_target);
priv->filter_func = filter_func;
priv->filter_func_target = user_data;
priv->filter_func_target_destroy_notify = destroy;
gtk_list_box_check_model_compat (box);
gtk_list_box_invalidate_filter (box);
}
/**
* gtk_list_box_set_header_func:
* @box: a #GtkListBox
* @update_header: (closure user_data) (allow-none): callback that lets you add row headers
* @user_data: user data passed to @update_header
* @destroy: destroy notifier for @user_data
*
* By setting a header function on the @box one can dynamically add headers
* in front of rows, depending on the contents of the row and its position in the list.
* For instance, one could use it to add headers in front of the first item of a
* new kind, in a list sorted by the kind.
*
* The @update_header can look at the current header widget using gtk_list_box_row_get_header()
* and either update the state of the widget as needed, or set a new one using
* gtk_list_box_row_set_header(). If no header is needed, set the header to %NULL.
*
* Note that you may get many calls @update_header to this for a particular row when e.g.
* changing things that don’t affect the header. In this case it is important for performance
* to not blindly replace an existing header with an identical one.
*
* The @update_header function will be called for each row after the call, and it will
* continue to be called each time a row changes (via gtk_list_box_row_changed()) and when
* the row before changes (either by gtk_list_box_row_changed() on the previous row, or when
* the previous row becomes a different row). It is also called for all rows when
* gtk_list_box_invalidate_headers() is called.
*
* Since: 3.10
*/
void
gtk_list_box_set_header_func (GtkListBox *box,
GtkListBoxUpdateHeaderFunc update_header,
gpointer user_data,
GDestroyNotify destroy)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
g_return_if_fail (GTK_IS_LIST_BOX (box));
if (priv->update_header_func_target_destroy_notify != NULL)
priv->update_header_func_target_destroy_notify (priv->update_header_func_target);
priv->update_header_func = update_header;
priv->update_header_func_target = user_data;
priv->update_header_func_target_destroy_notify = destroy;
gtk_list_box_invalidate_headers (box);
}
/**
* gtk_list_box_invalidate_filter:
* @box: a #GtkListBox
*
* Update the filtering for all rows. Call this when result
* of the filter function on the @box is changed due
* to an external factor. For instance, this would be used
* if the filter function just looked for a specific search
* string and the entry with the search string has changed.
*
* Since: 3.10
*/
void
gtk_list_box_invalidate_filter (GtkListBox *box)
{
g_return_if_fail (GTK_IS_LIST_BOX (box));
gtk_list_box_apply_filter_all (box);
gtk_list_box_invalidate_headers (box);
gtk_widget_queue_resize (GTK_WIDGET (box));
}
static gint
do_sort (GtkListBoxRow *a,
GtkListBoxRow *b,
GtkListBox *box)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
return priv->sort_func (a, b, priv->sort_func_target);
}
static void
gtk_list_box_css_node_foreach (gpointer data,
gpointer user_data)
{
GtkWidget **previous = user_data;
GtkWidget *row = data;
GtkCssNode *row_node;
GtkCssNode *prev_node;
if (*previous)
{
prev_node = gtk_widget_get_css_node (*previous);
row_node = gtk_widget_get_css_node (row);
gtk_css_node_insert_after (gtk_css_node_get_parent (row_node),
row_node,
prev_node);
}
*previous = row;
}
/**
* gtk_list_box_invalidate_sort:
* @box: a #GtkListBox
*
* Update the sorting for all rows. Call this when result
* of the sort function on the @box is changed due
* to an external factor.
*
* Since: 3.10
*/
void
gtk_list_box_invalidate_sort (GtkListBox *box)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
GtkWidget *previous = NULL;
g_return_if_fail (GTK_IS_LIST_BOX (box));
if (priv->sort_func == NULL)
return;
g_sequence_sort (priv->children, (GCompareDataFunc)do_sort, box);
g_sequence_foreach (priv->children, gtk_list_box_css_node_foreach, &previous);
gtk_list_box_invalidate_headers (box);
gtk_widget_queue_resize (GTK_WIDGET (box));
}
static void
gtk_list_box_do_reseparate (GtkListBox *box)
{
GSequenceIter *iter;
for (iter = g_sequence_get_begin_iter (BOX_PRIV (box)->children);
!g_sequence_iter_is_end (iter);
iter = g_sequence_iter_next (iter))
gtk_list_box_update_header (box, iter);
gtk_widget_queue_resize (GTK_WIDGET (box));
}
/**
* gtk_list_box_invalidate_headers:
* @box: a #GtkListBox
*
* Update the separators for all rows. Call this when result
* of the header function on the @box is changed due
* to an external factor.
*
* Since: 3.10
*/
void
gtk_list_box_invalidate_headers (GtkListBox *box)
{
g_return_if_fail (GTK_IS_LIST_BOX (box));
if (!gtk_widget_get_visible (GTK_WIDGET (box)))
return;
gtk_list_box_do_reseparate (box);
}
/**
* gtk_list_box_set_sort_func:
* @box: a #GtkListBox
* @sort_func: (closure user_data) (allow-none): the sort function
* @user_data: user data passed to @sort_func
* @destroy: destroy notifier for @user_data
*
* By setting a sort function on the @box one can dynamically reorder the rows
* of the list, based on the contents of the rows.
*
* The @sort_func will be called for each row after the call, and will continue to
* be called each time a row changes (via gtk_list_box_row_changed()) and when
* gtk_list_box_invalidate_sort() is called.
*
* Note that using a sort function is incompatible with using a model
* (see gtk_list_box_bind_model()).
*
* Since: 3.10
*/
void
gtk_list_box_set_sort_func (GtkListBox *box,
GtkListBoxSortFunc sort_func,
gpointer user_data,
GDestroyNotify destroy)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
g_return_if_fail (GTK_IS_LIST_BOX (box));
if (priv->sort_func_target_destroy_notify != NULL)
priv->sort_func_target_destroy_notify (priv->sort_func_target);
priv->sort_func = sort_func;
priv->sort_func_target = user_data;
priv->sort_func_target_destroy_notify = destroy;
gtk_list_box_check_model_compat (box);
gtk_list_box_invalidate_sort (box);
}
static void
gtk_list_box_got_row_changed (GtkListBox *box,
GtkListBoxRow *row)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
GtkListBoxRowPrivate *row_priv = ROW_PRIV (row);
GSequenceIter *prev_next, *next;
g_return_if_fail (GTK_IS_LIST_BOX (box));
g_return_if_fail (GTK_IS_LIST_BOX_ROW (row));
prev_next = gtk_list_box_get_next_visible (box, row_priv->iter);
if (priv->sort_func != NULL)
{
g_sequence_sort_changed (row_priv->iter,
(GCompareDataFunc)do_sort,
box);
gtk_widget_queue_resize (GTK_WIDGET (box));
}
gtk_list_box_apply_filter (box, row);
if (gtk_widget_get_visible (GTK_WIDGET (box)))
{
next = gtk_list_box_get_next_visible (box, row_priv->iter);
gtk_list_box_update_header (box, row_priv->iter);
gtk_list_box_update_header (box, next);
gtk_list_box_update_header (box, prev_next);
}
}
/**
* gtk_list_box_set_activate_on_single_click:
* @box: a #GtkListBox
* @single: a boolean
*
* If @single is %TRUE, rows will be activated when you click on them,
* otherwise you need to double-click.
*
* Since: 3.10
*/
void
gtk_list_box_set_activate_on_single_click (GtkListBox *box,
gboolean single)
{
g_return_if_fail (GTK_IS_LIST_BOX (box));
single = single != FALSE;
if (BOX_PRIV (box)->activate_single_click == single)
return;
BOX_PRIV (box)->activate_single_click = single;
g_object_notify_by_pspec (G_OBJECT (box), properties[PROP_ACTIVATE_ON_SINGLE_CLICK]);
}
/**
* gtk_list_box_get_activate_on_single_click:
* @box: a #GtkListBox
*
* Returns whether rows activate on single clicks.
*
* Returns: %TRUE if rows are activated on single click, %FALSE otherwise
*
* Since: 3.10
*/
gboolean
gtk_list_box_get_activate_on_single_click (GtkListBox *box)
{
g_return_val_if_fail (GTK_IS_LIST_BOX (box), FALSE);
return BOX_PRIV (box)->activate_single_click;
}
static void
gtk_list_box_add_move_binding (GtkBindingSet *binding_set,
guint keyval,
GdkModifierType modmask,
GtkMovementStep step,
gint count)
{
GdkDisplay *display;
GdkModifierType extend_mod_mask = GDK_SHIFT_MASK;
GdkModifierType modify_mod_mask = GDK_CONTROL_MASK;
display = gdk_display_get_default ();
if (display)
{
extend_mod_mask = gdk_keymap_get_modifier_mask (gdk_keymap_get_for_display (display),
GDK_MODIFIER_INTENT_EXTEND_SELECTION);
modify_mod_mask = gdk_keymap_get_modifier_mask (gdk_keymap_get_for_display (display),
GDK_MODIFIER_INTENT_MODIFY_SELECTION);
}
gtk_binding_entry_add_signal (binding_set, keyval, modmask,
"move-cursor", 2,
GTK_TYPE_MOVEMENT_STEP, step,
G_TYPE_INT, count,
NULL);
gtk_binding_entry_add_signal (binding_set, keyval, modmask | extend_mod_mask,
"move-cursor", 2,
GTK_TYPE_MOVEMENT_STEP, step,
G_TYPE_INT, count,
NULL);
gtk_binding_entry_add_signal (binding_set, keyval, modmask | modify_mod_mask,
"move-cursor", 2,
GTK_TYPE_MOVEMENT_STEP, step,
G_TYPE_INT, count,
NULL);
gtk_binding_entry_add_signal (binding_set, keyval, modmask | extend_mod_mask | modify_mod_mask,
"move-cursor", 2,
GTK_TYPE_MOVEMENT_STEP, step,
G_TYPE_INT, count,
NULL);
}
static void
ensure_row_visible (GtkListBox *box,
GtkListBoxRow *row)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
GtkWidget *header;
gint y, height;
GtkAllocation allocation;
if (!priv->adjustment)
return;
gtk_widget_get_allocation (GTK_WIDGET (row), &allocation);
y = allocation.y;
height = allocation.height;
/* If the row has a header, we want to ensure that it is visible as well. */
header = ROW_PRIV (row)->header;
if (GTK_IS_WIDGET (header) && gtk_widget_is_drawable (header))
{
gtk_widget_get_allocation (header, &allocation);
y = allocation.y;
height += allocation.height;
}
gtk_adjustment_clamp_page (priv->adjustment, y, y + height);
}
static void
gtk_list_box_update_cursor (GtkListBox *box,
GtkListBoxRow *row,
gboolean grab_focus)
{
BOX_PRIV (box)->cursor_row = row;
ensure_row_visible (box, row);
if (grab_focus)
gtk_widget_grab_focus (GTK_WIDGET (row));
gtk_widget_queue_draw (GTK_WIDGET (row));
_gtk_list_box_accessible_update_cursor (box, row);
}
static GtkListBox *
gtk_list_box_row_get_box (GtkListBoxRow *row)
{
GtkWidget *parent;
parent = gtk_widget_get_parent (GTK_WIDGET (row));
if (parent && GTK_IS_LIST_BOX (parent))
return GTK_LIST_BOX (parent);
return NULL;
}
static gboolean
row_is_visible (GtkListBoxRow *row)
{
return ROW_PRIV (row)->visible;
}
static gboolean
gtk_list_box_row_set_selected (GtkListBoxRow *row,
gboolean selected)
{
if (!ROW_PRIV (row)->selectable)
return FALSE;
if (ROW_PRIV (row)->selected != selected)
{
ROW_PRIV (row)->selected = selected;
if (selected)
gtk_widget_set_state_flags (GTK_WIDGET (row),
GTK_STATE_FLAG_SELECTED, FALSE);
else
gtk_widget_unset_state_flags (GTK_WIDGET (row),
GTK_STATE_FLAG_SELECTED);
return TRUE;
}
return FALSE;
}
static gboolean
gtk_list_box_unselect_all_internal (GtkListBox *box)
{
GtkListBoxRow *row;
GSequenceIter *iter;
gboolean dirty = FALSE;
if (BOX_PRIV (box)->selection_mode == GTK_SELECTION_NONE)
return FALSE;
for (iter = g_sequence_get_begin_iter (BOX_PRIV (box)->children);
!g_sequence_iter_is_end (iter);
iter = g_sequence_iter_next (iter))
{
row = g_sequence_get (iter);
dirty |= gtk_list_box_row_set_selected (row, FALSE);
}
BOX_PRIV (box)->selected_row = NULL;
return dirty;
}
static void
gtk_list_box_unselect_row_internal (GtkListBox *box,
GtkListBoxRow *row)
{
if (!ROW_PRIV (row)->selected)
return;
if (BOX_PRIV (box)->selection_mode == GTK_SELECTION_NONE)
return;
else if (BOX_PRIV (box)->selection_mode != GTK_SELECTION_MULTIPLE)
gtk_list_box_unselect_all_internal (box);
else
gtk_list_box_row_set_selected (row, FALSE);
g_signal_emit (box, signals[ROW_SELECTED], 0, NULL);
g_signal_emit (box, signals[SELECTED_ROWS_CHANGED], 0);
}
static void
gtk_list_box_select_row_internal (GtkListBox *box,
GtkListBoxRow *row)
{
if (!ROW_PRIV (row)->selectable)
return;
if (ROW_PRIV (row)->selected)
return;
if (BOX_PRIV (box)->selection_mode == GTK_SELECTION_NONE)
return;
if (BOX_PRIV (box)->selection_mode != GTK_SELECTION_MULTIPLE)
gtk_list_box_unselect_all_internal (box);
gtk_list_box_row_set_selected (row, TRUE);
BOX_PRIV (box)->selected_row = row;
g_signal_emit (box, signals[ROW_SELECTED], 0, row);
g_signal_emit (box, signals[SELECTED_ROWS_CHANGED], 0);
}
static void
gtk_list_box_select_all_between (GtkListBox *box,
GtkListBoxRow *row1,
GtkListBoxRow *row2,
gboolean modify)
{
GSequenceIter *iter, *iter1, *iter2;
if (row1)
iter1 = ROW_PRIV (row1)->iter;
else
iter1 = g_sequence_get_begin_iter (BOX_PRIV (box)->children);
if (row2)
iter2 = ROW_PRIV (row2)->iter;
else
iter2 = g_sequence_get_end_iter (BOX_PRIV (box)->children);
if (g_sequence_iter_compare (iter2, iter1) < 0)
{
iter = iter1;
iter1 = iter2;
iter2 = iter;
}
for (iter = iter1;
!g_sequence_iter_is_end (iter);
iter = g_sequence_iter_next (iter))
{
GtkListBoxRow *row;
row = GTK_LIST_BOX_ROW (g_sequence_get (iter));
if (row_is_visible (row))
{
if (modify)
gtk_list_box_row_set_selected (row, !ROW_PRIV (row)->selected);
else
gtk_list_box_row_set_selected (row, TRUE);
}
if (g_sequence_iter_compare (iter, iter2) == 0)
break;
}
}
#define gtk_list_box_update_selection(b,r,m,e) \
gtk_list_box_update_selection_full((b), (r), (m), (e), TRUE)
static void
gtk_list_box_update_selection_full (GtkListBox *box,
GtkListBoxRow *row,
gboolean modify,
gboolean extend,
gboolean grab_cursor)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
gtk_list_box_update_cursor (box, row, grab_cursor);
if (priv->selection_mode == GTK_SELECTION_NONE)
return;
if (!ROW_PRIV (row)->selectable)
return;
if (priv->selection_mode == GTK_SELECTION_BROWSE)
{
gtk_list_box_unselect_all_internal (box);
gtk_list_box_row_set_selected (row, TRUE);
priv->selected_row = row;
g_signal_emit (box, signals[ROW_SELECTED], 0, row);
}
else if (priv->selection_mode == GTK_SELECTION_SINGLE)
{
gboolean was_selected;
was_selected = ROW_PRIV (row)->selected;
gtk_list_box_unselect_all_internal (box);
gtk_list_box_row_set_selected (row, modify ? !was_selected : TRUE);
priv->selected_row = ROW_PRIV (row)->selected ? row : NULL;
g_signal_emit (box, signals[ROW_SELECTED], 0, priv->selected_row);
}
else /* GTK_SELECTION_MULTIPLE */
{
if (extend)
{
GtkListBoxRow *selected_row;
selected_row = priv->selected_row;
gtk_list_box_unselect_all_internal (box);
if (selected_row == NULL)
{
gtk_list_box_row_set_selected (row, TRUE);
priv->selected_row = row;
g_signal_emit (box, signals[ROW_SELECTED], 0, row);
}
else
gtk_list_box_select_all_between (box, selected_row, row, FALSE);
}
else
{
if (modify)
{
gtk_list_box_row_set_selected (row, !ROW_PRIV (row)->selected);
g_signal_emit (box, signals[ROW_SELECTED], 0, ROW_PRIV (row)->selected ? row
: NULL);
}
else
{
gtk_list_box_unselect_all_internal (box);
gtk_list_box_row_set_selected (row, !ROW_PRIV (row)->selected);
priv->selected_row = row;
g_signal_emit (box, signals[ROW_SELECTED], 0, row);
}
}
}
g_signal_emit (box, signals[SELECTED_ROWS_CHANGED], 0);
}
static void
gtk_list_box_activate (GtkListBox *box,
GtkListBoxRow *row)
{
GtkListBoxRowPrivate *priv = ROW_PRIV (row);
if (!gtk_list_box_row_get_activatable (row))
return;
if (priv->action_helper)
gtk_action_helper_activate (priv->action_helper);
else
g_signal_emit (box, signals[ROW_ACTIVATED], 0, row);
}
#define gtk_list_box_select_and_activate(b,r) \
gtk_list_box_select_and_activate_full ((b), (r), TRUE)
static void
gtk_list_box_select_and_activate_full (GtkListBox *box,
GtkListBoxRow *row,
gboolean grab_focus)
{
if (row != NULL)
{
gtk_list_box_select_row_internal (box, row);
gtk_list_box_update_cursor (box, row, grab_focus);
gtk_list_box_activate (box, row);
}
}
static void
gtk_list_box_update_prelight (GtkListBox *box,
GtkListBoxRow *row)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
if (row != priv->prelight_row)
{
if (priv->prelight_row)
gtk_widget_unset_state_flags (GTK_WIDGET (priv->prelight_row),
GTK_STATE_FLAG_PRELIGHT);
if (row != NULL && gtk_widget_is_sensitive (GTK_WIDGET (row)))
{
priv->prelight_row = row;
gtk_widget_set_state_flags (GTK_WIDGET (priv->prelight_row),
GTK_STATE_FLAG_PRELIGHT,
FALSE);
}
else
{
priv->prelight_row = NULL;
}
}
}
static void
gtk_list_box_update_active (GtkListBox *box,
GtkListBoxRow *row)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
gboolean val;
val = priv->active_row == row;
if (priv->active_row != NULL &&
val != priv->active_row_active)
{
priv->active_row_active = val;
if (priv->active_row_active)
gtk_widget_set_state_flags (GTK_WIDGET (priv->active_row),
GTK_STATE_FLAG_ACTIVE,
FALSE);
else
gtk_widget_unset_state_flags (GTK_WIDGET (priv->active_row),
GTK_STATE_FLAG_ACTIVE);
}
}
static gboolean
gtk_list_box_enter_notify_event (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkListBox *box = GTK_LIST_BOX (widget);
GtkListBoxRow *row;
if (event->window != gtk_widget_get_window (widget))
return FALSE;
BOX_PRIV (box)->in_widget = TRUE;
row = gtk_list_box_get_row_at_y (box, event->y);
gtk_list_box_update_prelight (box, row);
gtk_list_box_update_active (box, row);
return FALSE;
}
static gboolean
gtk_list_box_leave_notify_event (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkListBox *box = GTK_LIST_BOX (widget);
GtkListBoxRow *row = NULL;
if (event->window != gtk_widget_get_window (widget))
return FALSE;
if (event->detail != GDK_NOTIFY_INFERIOR)
{
BOX_PRIV (box)->in_widget = FALSE;
row = NULL;
}
else
row = gtk_list_box_get_row_at_y (box, event->y);
gtk_list_box_update_prelight (box, row);
gtk_list_box_update_active (box, row);
return FALSE;
}
static gboolean
gtk_list_box_motion_notify_event (GtkWidget *widget,
GdkEventMotion *event)
{
GtkListBox *box = GTK_LIST_BOX (widget);
GtkListBoxRow *row;
GdkWindow *window, *event_window;
gint relative_y;
gdouble parent_y;
if (!BOX_PRIV (box)->in_widget)
return FALSE;
window = gtk_widget_get_window (widget);
event_window = event->window;
relative_y = event->y;
while ((event_window != NULL) && (event_window != window))
{
gdk_window_coords_to_parent (event_window, 0, relative_y, NULL, &parent_y);
relative_y = parent_y;
event_window = gdk_window_get_effective_parent (event_window);
}
row = gtk_list_box_get_row_at_y (box, relative_y);
gtk_list_box_update_prelight (box, row);
gtk_list_box_update_active (box, row);
return FALSE;
}
static void
gtk_list_box_multipress_gesture_pressed (GtkGestureMultiPress *gesture,
guint n_press,
gdouble x,
gdouble y,
GtkListBox *box)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
GtkListBoxRow *row;
priv->active_row = NULL;
row = gtk_list_box_get_row_at_y (box, y);
if (row != NULL && gtk_widget_is_sensitive (GTK_WIDGET (row)))
{
priv->active_row = row;
priv->active_row_active = TRUE;
gtk_widget_set_state_flags (GTK_WIDGET (priv->active_row),
GTK_STATE_FLAG_ACTIVE,
FALSE);
if (n_press == 2 && !priv->activate_single_click)
gtk_list_box_activate (box, row);
}
}
static void
get_current_selection_modifiers (GtkWidget *widget,
gboolean *modify,
gboolean *extend)
{
GdkModifierType state = 0;
GdkModifierType mask;
*modify = FALSE;
*extend = FALSE;
if (gtk_get_current_event_state (&state))
{
mask = gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_MODIFY_SELECTION);
if ((state & mask) == mask)
*modify = TRUE;
mask = gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_EXTEND_SELECTION);
if ((state & mask) == mask)
*extend = TRUE;
}
}
static void
gtk_list_box_multipress_gesture_released (GtkGestureMultiPress *gesture,
guint n_press,
gdouble x,
gdouble y,
GtkListBox *box)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
/* Take a ref to protect against reentrancy
* (the activation may destroy the widget)
*/
g_object_ref (box);
if (priv->active_row != NULL && priv->active_row_active)
{
gboolean focus_on_click = gtk_widget_get_focus_on_click (GTK_WIDGET (priv->active_row));
gtk_widget_unset_state_flags (GTK_WIDGET (priv->active_row),
GTK_STATE_FLAG_ACTIVE);
if (n_press == 1 && priv->activate_single_click)
gtk_list_box_select_and_activate_full (box, priv->active_row, focus_on_click);
else
{
GdkEventSequence *sequence;
GdkInputSource source;
const GdkEvent *event;
gboolean modify;
gboolean extend;
get_current_selection_modifiers (GTK_WIDGET (box), &modify, &extend);
/* With touch, we default to modifying the selection.
* You can still clear the selection and start over
* by holding Ctrl.
*/
sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
event = gtk_gesture_get_last_event (GTK_GESTURE (gesture), sequence);
source = gdk_device_get_source (gdk_event_get_source_device (event));
if (source == GDK_SOURCE_TOUCHSCREEN)
modify = !modify;
gtk_list_box_update_selection_full (box, priv->active_row, modify, extend, focus_on_click);
}
}
priv->active_row = NULL;
priv->active_row_active = FALSE;
g_object_unref (box);
}
static void
gtk_list_box_show (GtkWidget *widget)
{
gtk_list_box_do_reseparate (GTK_LIST_BOX (widget));
GTK_WIDGET_CLASS (gtk_list_box_parent_class)->show (widget);
}
static gboolean
gtk_list_box_focus (GtkWidget *widget,
GtkDirectionType direction)
{
GtkListBox *box = GTK_LIST_BOX (widget);
GtkListBoxPrivate *priv = BOX_PRIV (box);
GtkWidget *focus_child;
GtkListBoxRow *next_focus_row;
GtkWidget *row;
GtkWidget *header;
focus_child = gtk_container_get_focus_child ((GtkContainer *)box);
next_focus_row = NULL;
if (focus_child != NULL)
{
GSequenceIter *i;
if (gtk_widget_child_focus (focus_child, direction))
return TRUE;
if (direction == GTK_DIR_UP || direction == GTK_DIR_TAB_BACKWARD)
{
if (GTK_IS_LIST_BOX_ROW (focus_child))
{
header = ROW_PRIV (GTK_LIST_BOX_ROW (focus_child))->header;
if (header && gtk_widget_child_focus (header, direction))
return TRUE;
}
if (GTK_IS_LIST_BOX_ROW (focus_child))
row = focus_child;
else
row = g_hash_table_lookup (priv->header_hash, focus_child);
if (GTK_IS_LIST_BOX_ROW (row))
i = gtk_list_box_get_previous_visible (box, ROW_PRIV (GTK_LIST_BOX_ROW (row))->iter);
else
i = NULL;
while (i != NULL)
{
if (gtk_widget_get_sensitive (g_sequence_get (i)))
{
next_focus_row = g_sequence_get (i);
break;
}
i = gtk_list_box_get_previous_visible (box, i);
}
}
else if (direction == GTK_DIR_DOWN || direction == GTK_DIR_TAB_FORWARD)
{
if (GTK_IS_LIST_BOX_ROW (focus_child))
i = gtk_list_box_get_next_visible (box, ROW_PRIV (GTK_LIST_BOX_ROW (focus_child))->iter);
else
{
row = g_hash_table_lookup (priv->header_hash, focus_child);
if (GTK_IS_LIST_BOX_ROW (row))
i = ROW_PRIV (GTK_LIST_BOX_ROW (row))->iter;
else
i = NULL;
}
while (!g_sequence_iter_is_end (i))
{
if (gtk_widget_get_sensitive (g_sequence_get (i)))
{
next_focus_row = g_sequence_get (i);
break;
}
i = gtk_list_box_get_next_visible (box, i);
}
}
}
else
{
/* No current focus row */
switch (direction)
{
case GTK_DIR_UP:
case GTK_DIR_TAB_BACKWARD:
next_focus_row = priv->selected_row;
if (next_focus_row == NULL)
next_focus_row = gtk_list_box_get_last_focusable (box);
break;
default:
next_focus_row = priv->selected_row;
if (next_focus_row == NULL)
next_focus_row = gtk_list_box_get_first_focusable (box);
break;
}
}
if (next_focus_row == NULL)
{
if (direction == GTK_DIR_UP || direction == GTK_DIR_DOWN)
{
if (gtk_widget_keynav_failed (GTK_WIDGET (box), direction))
return TRUE;
}
return FALSE;
}
if (direction == GTK_DIR_DOWN || direction == GTK_DIR_TAB_FORWARD)
{
header = ROW_PRIV (next_focus_row)->header;
if (header && gtk_widget_child_focus (header, direction))
return TRUE;
}
if (gtk_widget_child_focus (GTK_WIDGET (next_focus_row), direction))
return TRUE;
return FALSE;
}
static gboolean
gtk_list_box_draw (GtkWidget *widget,
cairo_t *cr)
{
gtk_css_gadget_draw (BOX_PRIV (widget)->gadget, cr);
return FALSE;
}
static gboolean
gtk_list_box_render (GtkCssGadget *gadget,
cairo_t *cr,
int x,
int y,
int width,
int height,
gpointer data)
{
GtkWidget *widget = gtk_css_gadget_get_owner (gadget);
GTK_WIDGET_CLASS (gtk_list_box_parent_class)->draw (widget, cr);
return FALSE;
}
static void
gtk_list_box_realize (GtkWidget *widget)
{
GtkAllocation allocation;
GdkWindowAttr attributes = { 0, };
GdkWindow *window;
gtk_widget_get_allocation (widget, &allocation);
gtk_widget_set_realized (widget, TRUE);
attributes.x = allocation.x;
attributes.y = allocation.y;
attributes.width = allocation.width;
attributes.height = allocation.height;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.event_mask = gtk_widget_get_events (widget) |
GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK | GDK_POINTER_MOTION_MASK |
GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK;
attributes.wclass = GDK_INPUT_OUTPUT;
window = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, GDK_WA_X | GDK_WA_Y);
gdk_window_set_user_data (window, (GObject*) widget);
gtk_widget_set_window (widget, window); /* Passes ownership */
}
static void
list_box_add_visible_rows (GtkListBox *box,
gint n)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
int was_zero;
was_zero = priv->n_visible_rows == 0;
priv->n_visible_rows += n;
if (priv->placeholder &&
(was_zero || priv->n_visible_rows == 0))
gtk_widget_set_child_visible (GTK_WIDGET (priv->placeholder),
priv->n_visible_rows == 0);
}
/* Children are visible if they are shown by the app (visible)
* and not filtered out (child_visible) by the listbox
*/
static void
update_row_is_visible (GtkListBox *box,
GtkListBoxRow *row)
{
GtkListBoxRowPrivate *row_priv = ROW_PRIV (row);
gboolean was_visible;
was_visible = row_priv->visible;
row_priv->visible =
gtk_widget_get_visible (GTK_WIDGET (row)) &&
gtk_widget_get_child_visible (GTK_WIDGET (row));
if (was_visible && !row_priv->visible)
list_box_add_visible_rows (box, -1);
if (!was_visible && row_priv->visible)
list_box_add_visible_rows (box, 1);
}
static void
gtk_list_box_apply_filter (GtkListBox *box,
GtkListBoxRow *row)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
gboolean do_show;
do_show = TRUE;
if (priv->filter_func != NULL)
do_show = priv->filter_func (row, priv->filter_func_target);
gtk_widget_set_child_visible (GTK_WIDGET (row), do_show);
update_row_is_visible (box, row);
}
static void
gtk_list_box_apply_filter_all (GtkListBox *box)
{
GtkListBoxRow *row;
GSequenceIter *iter;
for (iter = g_sequence_get_begin_iter (BOX_PRIV (box)->children);
!g_sequence_iter_is_end (iter);
iter = g_sequence_iter_next (iter))
{
row = g_sequence_get (iter);
gtk_list_box_apply_filter (box, row);
}
}
static GtkListBoxRow *
gtk_list_box_get_first_focusable (GtkListBox *box)
{
GtkListBoxRow *row;
GSequenceIter *iter;
for (iter = g_sequence_get_begin_iter (BOX_PRIV (box)->children);
!g_sequence_iter_is_end (iter);
iter = g_sequence_iter_next (iter))
{
row = g_sequence_get (iter);
if (row_is_visible (row) && gtk_widget_is_sensitive (GTK_WIDGET (row)))
return row;
}
return NULL;
}
static GtkListBoxRow *
gtk_list_box_get_last_focusable (GtkListBox *box)
{
GtkListBoxRow *row;
GSequenceIter *iter;
iter = g_sequence_get_end_iter (BOX_PRIV (box)->children);
while (!g_sequence_iter_is_begin (iter))
{
iter = g_sequence_iter_prev (iter);
row = g_sequence_get (iter);
if (row_is_visible (row) && gtk_widget_is_sensitive (GTK_WIDGET (row)))
return row;
}
return NULL;
}
static GSequenceIter *
gtk_list_box_get_previous_visible (GtkListBox *box,
GSequenceIter *iter)
{
GtkListBoxRow *row;
if (g_sequence_iter_is_begin (iter))
return NULL;
do
{
iter = g_sequence_iter_prev (iter);
row = g_sequence_get (iter);
if (row_is_visible (row))
return iter;
}
while (!g_sequence_iter_is_begin (iter));
return NULL;
}
static GSequenceIter *
gtk_list_box_get_next_visible (GtkListBox *box,
GSequenceIter *iter)
{
GtkListBoxRow *row;
if (g_sequence_iter_is_end (iter))
return iter;
do
{
iter = g_sequence_iter_next (iter);
if (!g_sequence_iter_is_end (iter))
{
row = g_sequence_get (iter);
if (row_is_visible (row))
return iter;
}
}
while (!g_sequence_iter_is_end (iter));
return iter;
}
static GSequenceIter *
gtk_list_box_get_last_visible (GtkListBox *box,
GSequenceIter *iter)
{
GSequenceIter *next = NULL;
if (g_sequence_iter_is_end (iter))
return NULL;
do
{
next = gtk_list_box_get_next_visible (box, iter);
if (!g_sequence_iter_is_end (next))
iter = next;
}
while (!g_sequence_iter_is_end (next));
return iter;
}
static void
gtk_list_box_update_header (GtkListBox *box,
GSequenceIter *iter)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
GtkListBoxRow *row;
GSequenceIter *before_iter;
GtkListBoxRow *before_row;
GtkWidget *old_header;
if (iter == NULL || g_sequence_iter_is_end (iter))
return;
row = g_sequence_get (iter);
g_object_ref (row);
before_iter = gtk_list_box_get_previous_visible (box, iter);
before_row = NULL;
if (before_iter != NULL)
{
before_row = g_sequence_get (before_iter);
if (before_row)
g_object_ref (before_row);
}
if (priv->update_header_func != NULL &&
row_is_visible (row))
{
old_header = ROW_PRIV (row)->header;
if (old_header)
g_object_ref (old_header);
priv->update_header_func (row,
before_row,
priv->update_header_func_target);
if (old_header != ROW_PRIV (row)->header)
{
if (old_header != NULL &&
g_hash_table_lookup (priv->header_hash, old_header) == row)
{
/* Only unparent the @old_header if it hasn’t been re-used as the
* header for a different row. */
gtk_widget_unparent (old_header);
g_hash_table_remove (priv->header_hash, old_header);
}
if (ROW_PRIV (row)->header != NULL)
{
g_hash_table_insert (priv->header_hash, ROW_PRIV (row)->header, row);
gtk_widget_set_parent (ROW_PRIV (row)->header, GTK_WIDGET (box));
gtk_widget_show (ROW_PRIV (row)->header);
}
gtk_widget_queue_resize (GTK_WIDGET (box));
}
if (old_header)
g_object_unref (old_header);
}
else
{
if (ROW_PRIV (row)->header != NULL)
{
g_hash_table_remove (priv->header_hash, ROW_PRIV (row)->header);
gtk_widget_unparent (ROW_PRIV (row)->header);
gtk_list_box_row_set_header (row, NULL);
gtk_widget_queue_resize (GTK_WIDGET (box));
}
}
if (before_row)
g_object_unref (before_row);
g_object_unref (row);
}
static void
gtk_list_box_row_visibility_changed (GtkListBox *box,
GtkListBoxRow *row)
{
update_row_is_visible (box, row);
if (gtk_widget_get_visible (GTK_WIDGET (box)))
{
gtk_list_box_update_header (box, ROW_PRIV (row)->iter);
gtk_list_box_update_header (box,
gtk_list_box_get_next_visible (box, ROW_PRIV (row)->iter));
}
}
static void
gtk_list_box_add (GtkContainer *container,
GtkWidget *child)
{
gtk_list_box_insert (GTK_LIST_BOX (container), child, -1);
}
static void
gtk_list_box_remove (GtkContainer *container,
GtkWidget *child)
{
GtkWidget *widget = GTK_WIDGET (container);
GtkListBox *box = GTK_LIST_BOX (container);
GtkListBoxPrivate *priv = BOX_PRIV (box);
gboolean was_visible;
gboolean was_selected;
GtkListBoxRow *row;
GSequenceIter *next;
was_visible = gtk_widget_get_visible (child);
if (!GTK_IS_LIST_BOX_ROW (child))
{
row = g_hash_table_lookup (priv->header_hash, child);
if (row != NULL)
{
g_hash_table_remove (priv->header_hash, child);
g_clear_object (&ROW_PRIV (row)->header);
gtk_widget_unparent (child);
if (was_visible && gtk_widget_get_visible (widget))
gtk_widget_queue_resize (widget);
}
else
{
g_warning ("Tried to remove non-child %p", child);
}
return;
}
row = GTK_LIST_BOX_ROW (child);
if (g_sequence_iter_get_sequence (ROW_PRIV (row)->iter) != priv->children)
{
g_warning ("Tried to remove non-child %p", child);
return;
}
was_selected = ROW_PRIV (row)->selected;
if (ROW_PRIV (row)->visible)
list_box_add_visible_rows (box, -1);
if (ROW_PRIV (row)->header != NULL)
{
g_hash_table_remove (priv->header_hash, ROW_PRIV (row)->header);
gtk_widget_unparent (ROW_PRIV (row)->header);
g_clear_object (&ROW_PRIV (row)->header);
}
if (row == priv->selected_row)
priv->selected_row = NULL;
if (row == priv->prelight_row)
{
gtk_widget_unset_state_flags (GTK_WIDGET (row), GTK_STATE_FLAG_PRELIGHT);
priv->prelight_row = NULL;
}
if (row == priv->cursor_row)
priv->cursor_row = NULL;
if (row == priv->active_row)
{
gtk_widget_unset_state_flags (GTK_WIDGET (row), GTK_STATE_FLAG_ACTIVE);
priv->active_row = NULL;
}
if (row == priv->drag_highlighted_row)
gtk_list_box_drag_unhighlight_row (box);
next = gtk_list_box_get_next_visible (box, ROW_PRIV (row)->iter);
gtk_widget_unparent (child);
g_sequence_remove (ROW_PRIV (row)->iter);
if (gtk_widget_get_visible (widget))
gtk_list_box_update_header (box, next);
if (was_visible && gtk_widget_get_visible (GTK_WIDGET (box)))
gtk_widget_queue_resize (widget);
if (was_selected && !gtk_widget_in_destruction (widget))
{
g_signal_emit (box, signals[ROW_SELECTED], 0, NULL);
g_signal_emit (box, signals[SELECTED_ROWS_CHANGED], 0);
}
}
static void
gtk_list_box_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_target)
{
GtkListBoxPrivate *priv = BOX_PRIV (container);
GSequenceIter *iter;
GtkListBoxRow *row;
if (priv->placeholder != NULL && include_internals)
callback (priv->placeholder, callback_target);
iter = g_sequence_get_begin_iter (priv->children);
while (!g_sequence_iter_is_end (iter))
{
row = g_sequence_get (iter);
iter = g_sequence_iter_next (iter);
if (ROW_PRIV (row)->header != NULL && include_internals)
callback (ROW_PRIV (row)->header, callback_target);
callback (GTK_WIDGET (row), callback_target);
}
}
static void
gtk_list_box_compute_expand (GtkWidget *widget,
gboolean *hexpand,
gboolean *vexpand)
{
GTK_WIDGET_CLASS (gtk_list_box_parent_class)->compute_expand (widget,
hexpand, vexpand);
/* We don't expand vertically beyound the minimum size */
if (vexpand)
*vexpand = FALSE;
}
static GType
gtk_list_box_child_type (GtkContainer *container)
{
/* We really support any type but we wrap it in a row. But that is
* more like a C helper function, in an abstract sense we only support
* row children, so that is what tools accessing this should use.
*/
return GTK_TYPE_LIST_BOX_ROW;
}
static GtkSizeRequestMode
gtk_list_box_get_request_mode (GtkWidget *widget)
{
return GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
}
static void
gtk_list_box_get_preferred_height (GtkWidget *widget,
gint *minimum,
gint *natural)
{
gtk_css_gadget_get_preferred_size (BOX_PRIV (widget)->gadget,
GTK_ORIENTATION_VERTICAL,
-1,
minimum, natural,
NULL, NULL);
}
static void
gtk_list_box_get_preferred_height_for_width (GtkWidget *widget,
gint width,
gint *minimum,
gint *natural)
{
gtk_css_gadget_get_preferred_size (BOX_PRIV (widget)->gadget,
GTK_ORIENTATION_VERTICAL,
width,
minimum, natural,
NULL, NULL);
}
static void
gtk_list_box_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural)
{
gtk_css_gadget_get_preferred_size (BOX_PRIV (widget)->gadget,
GTK_ORIENTATION_HORIZONTAL,
-1,
minimum, natural,
NULL, NULL);
}
static void
gtk_list_box_get_preferred_width_for_height (GtkWidget *widget,
gint height,
gint *minimum,
gint *natural)
{
gtk_css_gadget_get_preferred_size (BOX_PRIV (widget)->gadget,
GTK_ORIENTATION_HORIZONTAL,
height,
minimum, natural,
NULL, NULL);
}
static void
gtk_list_box_measure (GtkCssGadget *gadget,
GtkOrientation orientation,
gint for_size,
gint *minimum,
gint *natural,
gint *minimum_baseline,
gint *natural_baseline,
gpointer unused)
{
GtkWidget *widget = gtk_css_gadget_get_owner (gadget);
GtkListBoxPrivate *priv = BOX_PRIV (widget);
GSequenceIter *iter;
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
*minimum = 0;
*natural = 0;
if (priv->placeholder && gtk_widget_get_child_visible (priv->placeholder))
gtk_widget_get_preferred_width (priv->placeholder, minimum, natural);
for (iter = g_sequence_get_begin_iter (priv->children);
!g_sequence_iter_is_end (iter);
iter = g_sequence_iter_next (iter))
{
GtkListBoxRow *row;
gint row_min;
gint row_nat;
row = g_sequence_get (iter);
/* We *do* take visible but filtered rows into account here so that
* the list width doesn't change during filtering
*/
if (!gtk_widget_get_visible (GTK_WIDGET (row)))
continue;
gtk_widget_get_preferred_width (GTK_WIDGET (row), &row_min, &row_nat);
*minimum = MAX (*minimum, row_min);
*natural = MAX (*natural, row_nat);
if (ROW_PRIV (row)->header != NULL)
{
gtk_widget_get_preferred_width (ROW_PRIV (row)->header, &row_min, &row_nat);
*minimum = MAX (*minimum, row_min);
*natural = MAX (*natural, row_nat);
}
}
}
else
{
if (for_size < 0)
gtk_css_gadget_get_preferred_size (priv->gadget,
GTK_ORIENTATION_HORIZONTAL,
-1,
NULL, &for_size,
NULL, NULL);
*minimum = 0;
if (priv->placeholder && gtk_widget_get_child_visible (priv->placeholder))
gtk_widget_get_preferred_height_for_width (priv->placeholder, for_size,
minimum, NULL);
for (iter = g_sequence_get_begin_iter (priv->children);
!g_sequence_iter_is_end (iter);
iter = g_sequence_iter_next (iter))
{
GtkListBoxRow *row;
gint row_min = 0;
row = g_sequence_get (iter);
if (!row_is_visible (row))
continue;
if (ROW_PRIV (row)->header != NULL)
{
gtk_widget_get_preferred_height_for_width (ROW_PRIV (row)->header, for_size, &row_min, NULL);
*minimum += row_min;
}
gtk_widget_get_preferred_height_for_width (GTK_WIDGET (row), for_size, &row_min, NULL);
*minimum += row_min;
}
/* We always allocate the minimum height, since handling expanding rows
* is way too costly, and unlikely to be used, as lists are generally put
* inside a scrolling window anyway.
*/
*natural = *minimum;
}
}
static void
gtk_list_box_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkAllocation clip;
GdkWindow *window;
GtkAllocation child_allocation;
gtk_widget_set_allocation (widget, allocation);
window = gtk_widget_get_window (widget);
if (window != NULL)
gdk_window_move_resize (window,
allocation->x, allocation->y,
allocation->width, allocation->height);
child_allocation.x = 0;
child_allocation.y = 0;
child_allocation.width = allocation->width;
child_allocation.height = allocation->height;
gtk_css_gadget_allocate (BOX_PRIV (widget)->gadget,
&child_allocation,
gtk_widget_get_allocated_baseline (widget),
&clip);
_gtk_widget_set_simple_clip (widget, &clip);
}
static void
gtk_list_box_allocate (GtkCssGadget *gadget,
const GtkAllocation *allocation,
int baseline,
GtkAllocation *out_clip,
gpointer unused)
{
GtkWidget *widget = gtk_css_gadget_get_owner (gadget);
GtkListBoxPrivate *priv = BOX_PRIV (widget);
GtkAllocation child_allocation;
GtkAllocation header_allocation;
GtkListBoxRow *row;
GSequenceIter *iter;
int child_min;
child_allocation.x = allocation->x;
child_allocation.y = allocation->y;
child_allocation.width = allocation->width;
child_allocation.height = 0;
header_allocation.x = allocation->x;
header_allocation.y = allocation->y;
header_allocation.width = allocation->width;
header_allocation.height = 0;
if (priv->placeholder && gtk_widget_get_child_visible (priv->placeholder))
{
gtk_widget_get_preferred_height_for_width (priv->placeholder,
allocation->width, &child_min, NULL);
header_allocation.height = allocation->height;
header_allocation.y = child_allocation.y;
gtk_widget_size_allocate (priv->placeholder, &header_allocation);
child_allocation.y += child_min;
}
for (iter = g_sequence_get_begin_iter (priv->children);
!g_sequence_iter_is_end (iter);
iter = g_sequence_iter_next (iter))
{
row = g_sequence_get (iter);
if (!row_is_visible (row))
{
ROW_PRIV (row)->y = child_allocation.y;
ROW_PRIV (row)->height = 0;
continue;
}
if (ROW_PRIV (row)->header != NULL)
{
gtk_widget_get_preferred_height_for_width (ROW_PRIV (row)->header,
allocation->width, &child_min, NULL);
header_allocation.height = child_min;
header_allocation.y = child_allocation.y;
gtk_widget_size_allocate (ROW_PRIV (row)->header, &header_allocation);
child_allocation.y += child_min;
}
ROW_PRIV (row)->y = child_allocation.y;
gtk_widget_get_preferred_height_for_width (GTK_WIDGET (row),
child_allocation.width, &child_min, NULL);
child_allocation.height = child_min;
ROW_PRIV (row)->height = child_allocation.height;
gtk_widget_size_allocate (GTK_WIDGET (row), &child_allocation);
child_allocation.y += child_min;
}
gtk_container_get_children_clip (GTK_CONTAINER (widget), out_clip);
}
/**
* gtk_list_box_prepend:
* @box: a #GtkListBox
* @child: the #GtkWidget to add
*
* Prepend a widget to the list. If a sort function is set, the widget will
* actually be inserted at the calculated position and this function has the
* same effect of gtk_container_add().
*
* Since: 3.10
*/
void
gtk_list_box_prepend (GtkListBox *box,
GtkWidget *child)
{
gtk_list_box_insert (box, child, 0);
}
static void
gtk_list_box_insert_css_node (GtkListBox *box,
GtkWidget *child,
GSequenceIter *iter)
{
GSequenceIter *prev_iter;
GtkCssNode *sibling;
prev_iter = g_sequence_iter_prev (iter);
if (prev_iter != iter)
sibling = gtk_widget_get_css_node (g_sequence_get (prev_iter));
else
sibling = NULL;
gtk_css_node_insert_after (gtk_widget_get_css_node (GTK_WIDGET (box)),
gtk_widget_get_css_node (child),
sibling);
}
/**
* gtk_list_box_insert:
* @box: a #GtkListBox
* @child: the #GtkWidget to add
* @position: the position to insert @child in
*
* Insert the @child into the @box at @position. If a sort function is
* set, the widget will actually be inserted at the calculated position and
* this function has the same effect of gtk_container_add().
*
* If @position is -1, or larger than the total number of items in the
* @box, then the @child will be appended to the end.
*
* Since: 3.10
*/
void
gtk_list_box_insert (GtkListBox *box,
GtkWidget *child,
gint position)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
GtkListBoxRow *row;
GSequenceIter *iter = NULL;
g_return_if_fail (GTK_IS_LIST_BOX (box));
g_return_if_fail (GTK_IS_WIDGET (child));
if (GTK_IS_LIST_BOX_ROW (child))
row = GTK_LIST_BOX_ROW (child);
else
{
row = GTK_LIST_BOX_ROW (gtk_list_box_row_new ());
gtk_widget_show (GTK_WIDGET (row));
gtk_container_add (GTK_CONTAINER (row), child);
}
if (priv->sort_func != NULL)
iter = g_sequence_insert_sorted (priv->children, row,
(GCompareDataFunc)do_sort, box);
else if (position == 0)
iter = g_sequence_prepend (priv->children, row);
else if (position == -1)
iter = g_sequence_append (priv->children, row);
else
{
GSequenceIter *current_iter;
current_iter = g_sequence_get_iter_at_pos (priv->children, position);
iter = g_sequence_insert_before (current_iter, row);
}
gtk_list_box_insert_css_node (box, GTK_WIDGET (row), iter);
ROW_PRIV (row)->iter = iter;
gtk_widget_set_parent (GTK_WIDGET (row), GTK_WIDGET (box));
gtk_widget_set_child_visible (GTK_WIDGET (row), TRUE);
ROW_PRIV (row)->visible = gtk_widget_get_visible (GTK_WIDGET (row));
if (ROW_PRIV (row)->visible)
list_box_add_visible_rows (box, 1);
gtk_list_box_apply_filter (box, row);
gtk_list_box_update_row_style (box, row);
if (gtk_widget_get_visible (GTK_WIDGET (box)))
{
gtk_list_box_update_header (box, ROW_PRIV (row)->iter);
gtk_list_box_update_header (box,
gtk_list_box_get_next_visible (box, ROW_PRIV (row)->iter));
}
}
/**
* gtk_list_box_drag_unhighlight_row:
* @box: a #GtkListBox
*
* If a row has previously been highlighted via gtk_list_box_drag_highlight_row()
* it will have the highlight removed.
*
* Since: 3.10
*/
void
gtk_list_box_drag_unhighlight_row (GtkListBox *box)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
g_return_if_fail (GTK_IS_LIST_BOX (box));
if (priv->drag_highlighted_row == NULL)
return;
gtk_drag_unhighlight (GTK_WIDGET (priv->drag_highlighted_row));
g_clear_object (&priv->drag_highlighted_row);
}
/**
* gtk_list_box_drag_highlight_row:
* @box: a #GtkListBox
* @row: a #GtkListBoxRow
*
* This is a helper function for implementing DnD onto a #GtkListBox.
* The passed in @row will be highlighted via gtk_drag_highlight(),
* and any previously highlighted row will be unhighlighted.
*
* The row will also be unhighlighted when the widget gets
* a drag leave event.
*
* Since: 3.10
*/
void
gtk_list_box_drag_highlight_row (GtkListBox *box,
GtkListBoxRow *row)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
g_return_if_fail (GTK_IS_LIST_BOX (box));
g_return_if_fail (GTK_IS_LIST_BOX_ROW (row));
if (priv->drag_highlighted_row == row)
return;
gtk_list_box_drag_unhighlight_row (box);
gtk_drag_highlight (GTK_WIDGET (row));
priv->drag_highlighted_row = g_object_ref (row);
}
static void
gtk_list_box_drag_leave (GtkWidget *widget,
GdkDragContext *context,
guint time_)
{
gtk_list_box_drag_unhighlight_row (GTK_LIST_BOX (widget));
}
static void
gtk_list_box_activate_cursor_row (GtkListBox *box)
{
gtk_list_box_select_and_activate (box, BOX_PRIV (box)->cursor_row);
}
static void
gtk_list_box_toggle_cursor_row (GtkListBox *box)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
if (priv->cursor_row == NULL)
return;
if ((priv->selection_mode == GTK_SELECTION_SINGLE ||
priv->selection_mode == GTK_SELECTION_MULTIPLE) &&
ROW_PRIV (priv->cursor_row)->selected)
gtk_list_box_unselect_row_internal (box, priv->cursor_row);
else
gtk_list_box_select_and_activate (box, priv->cursor_row);
}
static void
gtk_list_box_move_cursor (GtkListBox *box,
GtkMovementStep step,
gint count)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
gboolean modify;
gboolean extend;
GtkListBoxRow *row;
gint page_size;
GSequenceIter *iter;
gint start_y;
gint end_y;
int height;
row = NULL;
switch (step)
{
case GTK_MOVEMENT_BUFFER_ENDS:
if (count < 0)
row = gtk_list_box_get_first_focusable (box);
else
row = gtk_list_box_get_last_focusable (box);
break;
case GTK_MOVEMENT_DISPLAY_LINES:
if (priv->cursor_row != NULL)
{
gint i = count;
iter = ROW_PRIV (priv->cursor_row)->iter;
while (i < 0 && iter != NULL)
{
iter = gtk_list_box_get_previous_visible (box, iter);
i = i + 1;
}
while (i > 0 && iter != NULL)
{
iter = gtk_list_box_get_next_visible (box, iter);
i = i - 1;
}
if (iter != NULL && !g_sequence_iter_is_end (iter))
row = g_sequence_get (iter);
}
break;
case GTK_MOVEMENT_PAGES:
page_size = 100;
if (priv->adjustment != NULL)
page_size = gtk_adjustment_get_page_increment (priv->adjustment);
if (priv->cursor_row != NULL)
{
start_y = ROW_PRIV (priv->cursor_row)->y;
height = gtk_widget_get_allocated_height (GTK_WIDGET (box));
end_y = CLAMP (start_y + page_size * count, 0, height - 1);
row = gtk_list_box_get_row_at_y (box, end_y);
if (!row)
{
GSequenceIter *cursor_iter;
GSequenceIter *next_iter;
if (count > 0)
{
cursor_iter = ROW_PRIV (priv->cursor_row)->iter;
next_iter = gtk_list_box_get_last_visible (box, cursor_iter);
if (next_iter)
{
row = g_sequence_get (next_iter);
end_y = ROW_PRIV (row)->y;
}
}
else
{
row = gtk_list_box_get_row_at_index (box, 0);
end_y = ROW_PRIV (row)->y;
}
}
else if (row == priv->cursor_row)
{
iter = ROW_PRIV (row)->iter;
/* Move at least one row. This is important when the cursor_row's height is
* greater than page_size */
if (count < 0)
iter = g_sequence_iter_prev (iter);
else
iter = g_sequence_iter_next (iter);
if (!g_sequence_iter_is_begin (iter) && !g_sequence_iter_is_end (iter))
{
row = g_sequence_get (iter);
end_y = ROW_PRIV (row)->y;
}
}
if (end_y != start_y && priv->adjustment != NULL)
gtk_adjustment_animate_to_value (priv->adjustment, end_y);
}
break;
default:
return;
}
if (row == NULL || row == priv->cursor_row)
{
GtkDirectionType direction = count < 0 ? GTK_DIR_UP : GTK_DIR_DOWN;
if (!gtk_widget_keynav_failed (GTK_WIDGET (box), direction))
{
GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (box));
if (toplevel)
gtk_widget_child_focus (toplevel,
direction == GTK_DIR_UP ?
GTK_DIR_TAB_BACKWARD :
GTK_DIR_TAB_FORWARD);
}
return;
}
get_current_selection_modifiers (GTK_WIDGET (box), &modify, &extend);
gtk_list_box_update_cursor (box, row, TRUE);
if (!modify)
gtk_list_box_update_selection (box, row, FALSE, extend);
}
/**
* gtk_list_box_row_new:
*
* Creates a new #GtkListBoxRow, to be used as a child of a #GtkListBox.
*
* Returns: a new #GtkListBoxRow
*
* Since: 3.10
*/
GtkWidget *
gtk_list_box_row_new (void)
{
return g_object_new (GTK_TYPE_LIST_BOX_ROW, NULL);
}
static void
gtk_list_box_row_set_focus (GtkListBoxRow *row)
{
GtkListBox *box = gtk_list_box_row_get_box (row);
gboolean modify;
gboolean extend;
if (!box)
return;
get_current_selection_modifiers (GTK_WIDGET (row), &modify, &extend);
if (modify)
gtk_list_box_update_cursor (box, row, TRUE);
else
gtk_list_box_update_selection (box, row, FALSE, FALSE);
}
static gboolean
gtk_list_box_row_focus (GtkWidget *widget,
GtkDirectionType direction)
{
GtkListBoxRow *row = GTK_LIST_BOX_ROW (widget);
gboolean had_focus = FALSE;
GtkWidget *child;
child = gtk_bin_get_child (GTK_BIN (widget));
g_object_get (widget, "has-focus", &had_focus, NULL);
if (had_focus)
{
/* If on row, going right, enter into possible container */
if (child &&
(direction == GTK_DIR_RIGHT || direction == GTK_DIR_TAB_FORWARD))
{
if (gtk_widget_child_focus (GTK_WIDGET (child), direction))
return TRUE;
}
return FALSE;
}
else if (gtk_container_get_focus_child (GTK_CONTAINER (row)) != NULL)
{
/* Child has focus, always navigate inside it first */
if (gtk_widget_child_focus (child, direction))
return TRUE;
/* If exiting child container to the left, select row */
if (direction == GTK_DIR_LEFT || direction == GTK_DIR_TAB_BACKWARD)
{
gtk_list_box_row_set_focus (row);
return TRUE;
}
return FALSE;
}
else
{
/* If coming from the left, enter into possible container */
if (child &&
(direction == GTK_DIR_LEFT || direction == GTK_DIR_TAB_BACKWARD))
{
if (gtk_widget_child_focus (child, direction))
return TRUE;
}
gtk_list_box_row_set_focus (row);
return TRUE;
}
}
static void
gtk_list_box_row_activate (GtkListBoxRow *row)
{
GtkListBox *box;
box = gtk_list_box_row_get_box (row);
if (box)
gtk_list_box_select_and_activate (box, row);
}
static void
gtk_list_box_row_show (GtkWidget *widget)
{
GtkListBoxRow *row = GTK_LIST_BOX_ROW (widget);
GtkListBox *box;
GTK_WIDGET_CLASS (gtk_list_box_row_parent_class)->show (widget);
box = gtk_list_box_row_get_box (row);
if (box)
gtk_list_box_row_visibility_changed (box, row);
}
static void
gtk_list_box_row_hide (GtkWidget *widget)
{
GtkListBoxRow *row = GTK_LIST_BOX_ROW (widget);
GtkListBox *box;
GTK_WIDGET_CLASS (gtk_list_box_row_parent_class)->hide (widget);
box = gtk_list_box_row_get_box (row);
if (box)
gtk_list_box_row_visibility_changed (box, row);
}
static gboolean
gtk_list_box_row_draw (GtkWidget *widget,
cairo_t *cr)
{
gtk_css_gadget_draw (ROW_PRIV (GTK_LIST_BOX_ROW (widget))->gadget, cr);
return GDK_EVENT_PROPAGATE;
}
static gboolean
gtk_list_box_row_render (GtkCssGadget *gadget,
cairo_t *cr,
int x,
int y,
int width,
int height,
gpointer data)
{
GtkWidget *widget;
widget = gtk_css_gadget_get_owner (gadget);
GTK_WIDGET_CLASS (gtk_list_box_row_parent_class)->draw (widget, cr);
return gtk_widget_has_visible_focus (widget);
}
static void
gtk_list_box_row_measure (GtkCssGadget *gadget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline,
gpointer data)
{
GtkWidget *widget;
GtkWidget *child;
widget = gtk_css_gadget_get_owner (gadget);
child = gtk_bin_get_child (GTK_BIN (widget));
if (orientation == GTK_ORIENTATION_VERTICAL)
{
if (child && gtk_widget_get_visible (child))
{
if (for_size < 0)
gtk_widget_get_preferred_height (child, minimum, natural);
else
gtk_widget_get_preferred_height_for_width (child, for_size, minimum, natural);
}
else
*minimum = *natural = 0;
}
else
{
if (child && gtk_widget_get_visible (child))
gtk_widget_get_preferred_width (child, minimum, natural);
else
*minimum = *natural = 0;
}
}
static void
gtk_list_box_row_get_preferred_height (GtkWidget *widget,
gint *minimum,
gint *natural)
{
gtk_css_gadget_get_preferred_size (ROW_PRIV (GTK_LIST_BOX_ROW (widget))->gadget,
GTK_ORIENTATION_VERTICAL,
-1,
minimum, natural,
NULL, NULL);
}
static void
gtk_list_box_row_get_preferred_height_for_width (GtkWidget *widget,
gint width,
gint *minimum,
gint *natural)
{
gtk_css_gadget_get_preferred_size (ROW_PRIV (GTK_LIST_BOX_ROW (widget))->gadget,
GTK_ORIENTATION_VERTICAL,
width,
minimum, natural,
NULL, NULL);
}
static void
gtk_list_box_row_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural)
{
gtk_css_gadget_get_preferred_size (ROW_PRIV (GTK_LIST_BOX_ROW (widget))->gadget,
GTK_ORIENTATION_HORIZONTAL,
-1,
minimum, natural,
NULL, NULL);
}
static void
gtk_list_box_row_get_preferred_width_for_height (GtkWidget *widget,
gint height,
gint *minimum,
gint *natural)
{
gtk_css_gadget_get_preferred_size (ROW_PRIV (GTK_LIST_BOX_ROW (widget))->gadget,
GTK_ORIENTATION_HORIZONTAL,
height,
minimum, natural,
NULL, NULL);
}
static void
gtk_list_box_row_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkAllocation clip;
gtk_widget_set_allocation (widget, allocation);
gtk_css_gadget_allocate (ROW_PRIV (GTK_LIST_BOX_ROW (widget))->gadget,
allocation,
gtk_widget_get_allocated_baseline (widget),
&clip);
gtk_widget_set_clip (widget, &clip);
}
static void
gtk_list_box_row_allocate (GtkCssGadget *gadget,
const GtkAllocation *allocation,
int baseline,
GtkAllocation *out_clip,
gpointer data)
{
GtkWidget *widget;
GtkWidget *child;
widget = gtk_css_gadget_get_owner (gadget);
child = gtk_bin_get_child (GTK_BIN (widget));
if (child && gtk_widget_get_visible (child))
gtk_widget_size_allocate (child, (GtkAllocation *)allocation);
gtk_container_get_children_clip (GTK_CONTAINER (widget), out_clip);
}
/**
* gtk_list_box_row_changed:
* @row: a #GtkListBoxRow
*
* Marks @row as changed, causing any state that depends on this
* to be updated. This affects sorting, filtering and headers.
*
* Note that calls to this method must be in sync with the data
* used for the row functions. For instance, if the list is
* mirroring some external data set, and *two* rows changed in the
* external data set then when you call gtk_list_box_row_changed()
* on the first row the sort function must only read the new data
* for the first of the two changed rows, otherwise the resorting
* of the rows will be wrong.
*
* This generally means that if you don’t fully control the data
* model you have to duplicate the data that affects the listbox
* row functions into the row widgets themselves. Another alternative
* is to call gtk_list_box_invalidate_sort() on any model change,
* but that is more expensive.
*
* Since: 3.10
*/
void
gtk_list_box_row_changed (GtkListBoxRow *row)
{
GtkListBox *box;
g_return_if_fail (GTK_IS_LIST_BOX_ROW (row));
box = gtk_list_box_row_get_box (row);
if (box)
gtk_list_box_got_row_changed (box, row);
}
/**
* gtk_list_box_row_get_header:
* @row: a #GtkListBoxRow
*
* Returns the current header of the @row. This can be used
* in a #GtkListBoxUpdateHeaderFunc to see if there is a header
* set already, and if so to update the state of it.
*
* Returns: (transfer none) (nullable): the current header, or %NULL if none
*
* Since: 3.10
*/
GtkWidget *
gtk_list_box_row_get_header (GtkListBoxRow *row)
{
g_return_val_if_fail (GTK_IS_LIST_BOX_ROW (row), NULL);
return ROW_PRIV (row)->header;
}
/**
* gtk_list_box_row_set_header:
* @row: a #GtkListBoxRow
* @header: (allow-none): the header, or %NULL
*
* Sets the current header of the @row. This is only allowed to be called
* from a #GtkListBoxUpdateHeaderFunc. It will replace any existing
* header in the row, and be shown in front of the row in the listbox.
*
* Since: 3.10
*/
void
gtk_list_box_row_set_header (GtkListBoxRow *row,
GtkWidget *header)
{
GtkListBoxRowPrivate *priv;
g_return_if_fail (GTK_IS_LIST_BOX_ROW (row));
g_return_if_fail (header == NULL || GTK_IS_WIDGET (header));
priv = ROW_PRIV (row);
if (priv->header)
g_object_unref (priv->header);
priv->header = header;
if (header)
g_object_ref_sink (header);
}
/**
* gtk_list_box_row_get_index:
* @row: a #GtkListBoxRow
*
* Gets the current index of the @row in its #GtkListBox container.
*
* Returns: the index of the @row, or -1 if the @row is not in a listbox
*
* Since: 3.10
*/
gint
gtk_list_box_row_get_index (GtkListBoxRow *row)
{
GtkListBoxRowPrivate *priv;
g_return_val_if_fail (GTK_IS_LIST_BOX_ROW (row), -1);
priv = ROW_PRIV (row);
if (priv->iter != NULL)
return g_sequence_iter_get_position (priv->iter);
return -1;
}
/**
* gtk_list_box_row_is_selected:
* @row: a #GtkListBoxRow
*
* Returns whether the child is currently selected in its
* #GtkListBox container.
*
* Returns: %TRUE if @row is selected
*
* Since: 3.14
*/
gboolean
gtk_list_box_row_is_selected (GtkListBoxRow *row)
{
g_return_val_if_fail (GTK_IS_LIST_BOX_ROW (row), FALSE);
return ROW_PRIV (row)->selected;
}
static void
gtk_list_box_update_row_style (GtkListBox *box,
GtkListBoxRow *row)
{
GtkStyleContext *context;
gboolean can_select;
if (box && BOX_PRIV (box)->selection_mode != GTK_SELECTION_NONE)
can_select = TRUE;
else
can_select = FALSE;
context = gtk_widget_get_style_context (GTK_WIDGET (row));
if (ROW_PRIV (row)->activatable ||
(ROW_PRIV (row)->selectable && can_select))
gtk_style_context_add_class (context, "activatable");
else
gtk_style_context_remove_class (context, "activatable");
}
static void
gtk_list_box_update_row_styles (GtkListBox *box)
{
GSequenceIter *iter;
GtkListBoxRow *row;
for (iter = g_sequence_get_begin_iter (BOX_PRIV (box)->children);
!g_sequence_iter_is_end (iter);
iter = g_sequence_iter_next (iter))
{
row = g_sequence_get (iter);
gtk_list_box_update_row_style (box, row);
}
}
/**
* gtk_list_box_row_set_activatable:
* @row: a #GtkListBoxRow
* @activatable: %TRUE to mark the row as activatable
*
* Set the #GtkListBoxRow:activatable property for this row.
*
* Since: 3.14
*/
void
gtk_list_box_row_set_activatable (GtkListBoxRow *row,
gboolean activatable)
{
g_return_if_fail (GTK_IS_LIST_BOX_ROW (row));
activatable = activatable != FALSE;
if (ROW_PRIV (row)->activatable != activatable)
{
ROW_PRIV (row)->activatable = activatable;
gtk_list_box_update_row_style (gtk_list_box_row_get_box (row), row);
g_object_notify_by_pspec (G_OBJECT (row), row_properties[ROW_PROP_ACTIVATABLE]);
}
}
/**
* gtk_list_box_row_get_activatable:
* @row: a #GtkListBoxRow
*
* Gets the value of the #GtkListBoxRow:activatable property
* for this row.
*
* Returns: %TRUE if the row is activatable
*
* Since: 3.14
*/
gboolean
gtk_list_box_row_get_activatable (GtkListBoxRow *row)
{
g_return_val_if_fail (GTK_IS_LIST_BOX_ROW (row), TRUE);
return ROW_PRIV (row)->activatable;
}
/**
* gtk_list_box_row_set_selectable:
* @row: a #GtkListBoxRow
* @selectable: %TRUE to mark the row as selectable
*
* Set the #GtkListBoxRow:selectable property for this row.
*
* Since: 3.14
*/
void
gtk_list_box_row_set_selectable (GtkListBoxRow *row,
gboolean selectable)
{
g_return_if_fail (GTK_IS_LIST_BOX_ROW (row));
selectable = selectable != FALSE;
if (ROW_PRIV (row)->selectable != selectable)
{
if (!selectable)
gtk_list_box_row_set_selected (row, FALSE);
ROW_PRIV (row)->selectable = selectable;
gtk_list_box_update_row_style (gtk_list_box_row_get_box (row), row);
g_object_notify_by_pspec (G_OBJECT (row), row_properties[ROW_PROP_SELECTABLE]);
}
}
/**
* gtk_list_box_row_get_selectable:
* @row: a #GtkListBoxRow
*
* Gets the value of the #GtkListBoxRow:selectable property
* for this row.
*
* Returns: %TRUE if the row is selectable
*
* Since: 3.14
*/
gboolean
gtk_list_box_row_get_selectable (GtkListBoxRow *row)
{
g_return_val_if_fail (GTK_IS_LIST_BOX_ROW (row), TRUE);
return ROW_PRIV (row)->selectable;
}
static void
gtk_list_box_row_set_action_name (GtkActionable *actionable,
const gchar *action_name)
{
GtkListBoxRow *row = GTK_LIST_BOX_ROW (actionable);
GtkListBoxRowPrivate *priv = ROW_PRIV (row);
if (!priv->action_helper)
priv->action_helper = gtk_action_helper_new (actionable);
gtk_action_helper_set_action_name (priv->action_helper, action_name);
}
static void
gtk_list_box_row_set_action_target_value (GtkActionable *actionable,
GVariant *action_target)
{
GtkListBoxRow *row = GTK_LIST_BOX_ROW (actionable);
GtkListBoxRowPrivate *priv = ROW_PRIV (row);
if (!priv->action_helper)
priv->action_helper = gtk_action_helper_new (actionable);
gtk_action_helper_set_action_target_value (priv->action_helper, action_target);
}
static void
gtk_list_box_row_get_property (GObject *obj,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GtkListBoxRow *row = GTK_LIST_BOX_ROW (obj);
switch (property_id)
{
case ROW_PROP_ACTIVATABLE:
g_value_set_boolean (value, gtk_list_box_row_get_activatable (row));
break;
case ROW_PROP_SELECTABLE:
g_value_set_boolean (value, gtk_list_box_row_get_selectable (row));
break;
case ROW_PROP_ACTION_NAME:
g_value_set_string (value, gtk_action_helper_get_action_name (ROW_PRIV (row)->action_helper));
break;
case ROW_PROP_ACTION_TARGET:
g_value_set_variant (value, gtk_action_helper_get_action_target_value (ROW_PRIV (row)->action_helper));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, property_id, pspec);
break;
}
}
static void
gtk_list_box_row_set_property (GObject *obj,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GtkListBoxRow *row = GTK_LIST_BOX_ROW (obj);
switch (property_id)
{
case ROW_PROP_ACTIVATABLE:
gtk_list_box_row_set_activatable (row, g_value_get_boolean (value));
break;
case ROW_PROP_SELECTABLE:
gtk_list_box_row_set_selectable (row, g_value_get_boolean (value));
break;
case ROW_PROP_ACTION_NAME:
gtk_list_box_row_set_action_name (GTK_ACTIONABLE (row), g_value_get_string (value));
break;
case ROW_PROP_ACTION_TARGET:
gtk_list_box_row_set_action_target_value (GTK_ACTIONABLE (row), g_value_get_variant (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, property_id, pspec);
break;
}
}
static const gchar *
gtk_list_box_row_get_action_name (GtkActionable *actionable)
{
GtkListBoxRow *row = GTK_LIST_BOX_ROW (actionable);
return gtk_action_helper_get_action_name (ROW_PRIV (row)->action_helper);
}
static GVariant *
gtk_list_box_row_get_action_target_value (GtkActionable *actionable)
{
GtkListBoxRow *row = GTK_LIST_BOX_ROW (actionable);
return gtk_action_helper_get_action_target_value (ROW_PRIV (row)->action_helper);
}
static void
gtk_list_box_row_actionable_iface_init (GtkActionableInterface *iface)
{
iface->get_action_name = gtk_list_box_row_get_action_name;
iface->set_action_name = gtk_list_box_row_set_action_name;
iface->get_action_target_value = gtk_list_box_row_get_action_target_value;
iface->set_action_target_value = gtk_list_box_row_set_action_target_value;
}
static void
gtk_list_box_row_finalize (GObject *obj)
{
g_clear_object (&ROW_PRIV (GTK_LIST_BOX_ROW (obj))->header);
g_clear_object (&ROW_PRIV (GTK_LIST_BOX_ROW (obj))->gadget);
G_OBJECT_CLASS (gtk_list_box_row_parent_class)->finalize (obj);
}
static void
gtk_list_box_row_dispose (GObject *object)
{
GtkListBoxRow *row = GTK_LIST_BOX_ROW (object);
GtkListBoxRowPrivate *priv = ROW_PRIV (row);
g_clear_object (&priv->action_helper);
G_OBJECT_CLASS (gtk_list_box_row_parent_class)->dispose (object);
}
static void
gtk_list_box_row_grab_focus (GtkWidget *widget)
{
GtkListBoxRow *row = GTK_LIST_BOX_ROW (widget);
GtkListBox *box = gtk_list_box_row_get_box (row);
g_return_if_fail (box != NULL);
if (BOX_PRIV (box)->cursor_row != row)
gtk_list_box_update_cursor (box, row, FALSE);
GTK_WIDGET_CLASS (gtk_list_box_row_parent_class)->grab_focus (widget);
}
static void
gtk_list_box_row_class_init (GtkListBoxRowClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_LIST_BOX_ROW_ACCESSIBLE);
object_class->get_property = gtk_list_box_row_get_property;
object_class->set_property = gtk_list_box_row_set_property;
object_class->finalize = gtk_list_box_row_finalize;
object_class->dispose = gtk_list_box_row_dispose;
widget_class->show = gtk_list_box_row_show;
widget_class->hide = gtk_list_box_row_hide;
widget_class->draw = gtk_list_box_row_draw;
widget_class->get_preferred_height = gtk_list_box_row_get_preferred_height;
widget_class->get_preferred_height_for_width = gtk_list_box_row_get_preferred_height_for_width;
widget_class->get_preferred_width = gtk_list_box_row_get_preferred_width;
widget_class->get_preferred_width_for_height = gtk_list_box_row_get_preferred_width_for_height;
widget_class->size_allocate = gtk_list_box_row_size_allocate;
widget_class->focus = gtk_list_box_row_focus;
widget_class->grab_focus = gtk_list_box_row_grab_focus;
klass->activate = gtk_list_box_row_activate;
/**
* GtkListBoxRow::activate:
*
* This is a keybinding signal, which will cause this row to be activated.
*
* If you want to be notified when the user activates a row (by key or not),
* use the #GtkListBox::row-activated signal on the row’s parent #GtkListBox.
*
* Since: 3.10
*/
row_signals[ROW__ACTIVATE] =
g_signal_new (I_("activate"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkListBoxRowClass, activate),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
widget_class->activate_signal = row_signals[ROW__ACTIVATE];
/**
* GtkListBoxRow:activatable:
*
* The property determines whether the #GtkListBox::row-activated
* signal will be emitted for this row.
*
* Since: 3.14
*/
row_properties[ROW_PROP_ACTIVATABLE] =
g_param_spec_boolean ("activatable",
P_("Activatable"),
P_("Whether this row can be activated"),
TRUE,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkListBoxRow:selectable:
*
* The property determines whether this row can be selected.
*
* Since: 3.14
*/
row_properties[ROW_PROP_SELECTABLE] =
g_param_spec_boolean ("selectable",
P_("Selectable"),
P_("Whether this row can be selected"),
TRUE,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY);
g_object_class_install_properties (object_class, LAST_ROW_PROPERTY, row_properties);
g_object_class_override_property (object_class, ROW_PROP_ACTION_NAME, "action-name");
g_object_class_override_property (object_class, ROW_PROP_ACTION_TARGET, "action-target");
gtk_widget_class_set_css_name (widget_class, "row");
}
static void
gtk_list_box_row_init (GtkListBoxRow *row)
{
gtk_widget_set_can_focus (GTK_WIDGET (row), TRUE);
ROW_PRIV (row)->activatable = TRUE;
ROW_PRIV (row)->selectable = TRUE;
ROW_PRIV (row)->gadget = gtk_css_custom_gadget_new_for_node (gtk_widget_get_css_node (GTK_WIDGET (row)),
GTK_WIDGET (row),
gtk_list_box_row_measure,
gtk_list_box_row_allocate,
gtk_list_box_row_render,
NULL,
NULL);
gtk_css_gadget_add_class (ROW_PRIV (row)->gadget, "activatable");
}
static void
gtk_list_box_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *type)
{
if (type && strcmp (type, "placeholder") == 0)
gtk_list_box_set_placeholder (GTK_LIST_BOX (buildable), GTK_WIDGET (child));
else if (!type)
gtk_container_add (GTK_CONTAINER (buildable), GTK_WIDGET (child));
else
GTK_BUILDER_WARN_INVALID_CHILD_TYPE (buildable, type);
}
static void
gtk_list_box_buildable_interface_init (GtkBuildableIface *iface)
{
iface->add_child = gtk_list_box_buildable_add_child;
}
static void
gtk_list_box_bound_model_changed (GListModel *list,
guint position,
guint removed,
guint added,
gpointer user_data)
{
GtkListBox *box = user_data;
GtkListBoxPrivate *priv = BOX_PRIV (user_data);
guint i;
while (removed--)
{
GtkListBoxRow *row;
row = gtk_list_box_get_row_at_index (box, position);
gtk_widget_destroy (GTK_WIDGET (row));
}
for (i = 0; i < added; i++)
{
GObject *item;
GtkWidget *widget;
item = g_list_model_get_item (list, position + i);
widget = priv->create_widget_func (item, priv->create_widget_func_data);
/* We allow the create_widget_func to either return a full
* reference or a floating reference. If we got the floating
* reference, then turn it into a full reference now. That means
* that gtk_list_box_insert() will take another full reference.
* Finally, we'll release this full reference below, leaving only
* the one held by the box.
*/
if (g_object_is_floating (widget))
g_object_ref_sink (widget);
gtk_widget_show (widget);
gtk_list_box_insert (box, widget, position + i);
g_object_unref (widget);
g_object_unref (item);
}
}
static void
gtk_list_box_check_model_compat (GtkListBox *box)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
if (priv->bound_model &&
(priv->sort_func || priv->filter_func))
g_warning ("GtkListBox with a model will ignore sort and filter functions");
}
/**
* gtk_list_box_bind_model:
* @box: a #GtkListBox
* @model: (nullable): the #GListModel to be bound to @box
* @create_widget_func: (nullable): a function that creates widgets for items
* or %NULL in case you also passed %NULL as @model
* @user_data: user data passed to @create_widget_func
* @user_data_free_func: function for freeing @user_data
*
* Binds @model to @box.
*
* If @box was already bound to a model, that previous binding is
* destroyed.
*
* The contents of @box are cleared and then filled with widgets that
* represent items from @model. @box is updated whenever @model changes.
* If @model is %NULL, @box is left empty.
*
* It is undefined to add or remove widgets directly (for example, with
* gtk_list_box_insert() or gtk_container_add()) while @box is bound to a
* model.
*
* Note that using a model is incompatible with the filtering and sorting
* functionality in GtkListBox. When using a model, filtering and sorting
* should be implemented by the model.
*
* Since: 3.16
*/
void
gtk_list_box_bind_model (GtkListBox *box,
GListModel *model,
GtkListBoxCreateWidgetFunc create_widget_func,
gpointer user_data,
GDestroyNotify user_data_free_func)
{
GtkListBoxPrivate *priv = BOX_PRIV (box);
g_return_if_fail (GTK_IS_LIST_BOX (box));
g_return_if_fail (model == NULL || G_IS_LIST_MODEL (model));
g_return_if_fail (model == NULL || create_widget_func != NULL);
if (priv->bound_model)
{
if (priv->create_widget_func_data_destroy)
priv->create_widget_func_data_destroy (priv->create_widget_func_data);
g_signal_handlers_disconnect_by_func (priv->bound_model, gtk_list_box_bound_model_changed, box);
g_clear_object (&priv->bound_model);
}
gtk_list_box_forall (GTK_CONTAINER (box), FALSE, (GtkCallback) gtk_widget_destroy, NULL);
if (model == NULL)
return;
priv->bound_model = g_object_ref (model);
priv->create_widget_func = create_widget_func;
priv->create_widget_func_data = user_data;
priv->create_widget_func_data_destroy = user_data_free_func;
gtk_list_box_check_model_compat (box);
g_signal_connect (priv->bound_model, "items-changed", G_CALLBACK (gtk_list_box_bound_model_changed), box);
gtk_list_box_bound_model_changed (model, 0, 0, g_list_model_get_n_items (model), box);
}
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