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gtk/gtk/gtklistbox.c
Emmanuele Bassi fb3f817f69 listbox: Unbind the model before removing children 
Calling gtk_list_box_remove_all() is a no-op with a bound model; after
the introduction of the remove_all() method in 49e56fc7, we were left
with row widgets after the dispose() call chained up.

We could restore the explicit unparenting inside dispose() instead of
calling remove_all(), but since the bound list model is provided by the
user of GtkListBox, it's more appropriate to unbind it in the dispose()
implementation, to avoid any potential reference cycle (especially in
higher level languages that have no explicit reference acquisition).

We clean up the bound model, and its associated state, if any; and then
we remove all the row widgets that are left.
2023-04-04 13:47:36 +01:00

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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 "gtklistbox.h"
#include "gtkaccessible.h"
#include "gtkactionhelperprivate.h"
#include "gtkadjustmentprivate.h"
#include "gtkbinlayout.h"
#include "gtkbuildable.h"
#include "gtkgestureclick.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkprivate.h"
#include "gtkscrollable.h"
#include "gtktypebuiltins.h"
#include "gtkwidgetprivate.h"
#include <float.h>
#include <math.h>
#include <string.h>
/**
* GtkListBox:
*
* `GtkListBox` is a vertical list.
*
* A `GtkListBox` only 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 [method@Gtk.ListBox.prepend],
* [method@Gtk.ListBox.append] and [method@Gtk.ListBox.insert] 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, [signal@Gtk.ListBox::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.
*
* # 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 [method@Gtk.ListBox.set_placeholder]
* for info.
*
* # CSS nodes
*
* |[<!-- language="plain" -->
* list[.separators][.rich-list][.navigation-sidebar][.boxed-list]
* ╰── row[.activatable]
* ]|
*
* `GtkListBox` uses a single CSS node named list. It may carry the .separators
* style class, when the [property@Gtk.ListBox:show-separators] property is set.
* Each `GtkListBoxRow` uses a single CSS node named row. The row nodes get the
* .activatable style class added when appropriate.
*
* It may also carry the .boxed-list style class. In this case, the list will be
* automatically surrounded by a frame and have separators.
*
* The main list node may also carry style classes to select
* the style of [list presentation](section-list-widget.html#list-styles):
* .rich-list, .navigation-sidebar or .data-table.
*
* # Accessibility
*
* `GtkListBox` uses the %GTK_ACCESSIBLE_ROLE_LIST role and `GtkListBoxRow` uses
* the %GTK_ACCESSIBLE_ROLE_LIST_ITEM role.
*/
/**
* GtkListBoxRow:
*
* `GtkListBoxRow` is the kind of widget that can be added to a `GtkListBox`.
*/
typedef struct _GtkListBoxClass GtkListBoxClass;
struct _GtkListBox
{
GtkWidget parent_instance;
GSequence *children;
GHashTable *header_hash;
GtkWidget *placeholder;
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 *cursor_row;
GtkListBoxRow *active_row;
GtkSelectionMode selection_mode;
gulong adjustment_changed_id;
GtkWidget *scrollable_parent;
GtkAdjustment *adjustment;
gboolean activate_single_click;
gboolean accept_unpaired_release;
gboolean show_separators;
/* DnD */
GtkListBoxRow *drag_highlighted_row;
int n_visible_rows;
GListModel *bound_model;
GtkListBoxCreateWidgetFunc create_widget_func;
gpointer create_widget_func_data;
GDestroyNotify create_widget_func_data_destroy;
};
struct _GtkListBoxClass
{
GtkWidgetClass parent_class;
void (*row_selected) (GtkListBox *box,
GtkListBoxRow *row);
void (*row_activated) (GtkListBox *box,
GtkListBoxRow *row);
void (*activate_cursor_row) (GtkListBox *box);
void (*toggle_cursor_row) (GtkListBox *box);
void (*move_cursor) (GtkListBox *box,
GtkMovementStep step,
int count,
gboolean extend,
gboolean modify);
void (*selected_rows_changed) (GtkListBox *box);
void (*select_all) (GtkListBox *box);
void (*unselect_all) (GtkListBox *box);
};
typedef struct
{
GtkWidget *child;
GSequenceIter *iter;
GtkWidget *header;
GtkActionHelper *action_helper;
int y;
int 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,
PROP_ACCEPT_UNPAIRED_RELEASE,
PROP_SHOW_SEPARATORS,
LAST_PROPERTY
};
enum {
ROW_PROP_0,
ROW_PROP_ACTIVATABLE,
ROW_PROP_SELECTABLE,
ROW_PROP_CHILD,
/* actionable properties */
ROW_PROP_ACTION_NAME,
ROW_PROP_ACTION_TARGET,
LAST_ROW_PROPERTY = ROW_PROP_ACTION_NAME
};
#define ROW_PRIV(row) ((GtkListBoxRowPrivate*)gtk_list_box_row_get_instance_private ((GtkListBoxRow*)(row)))
static GtkBuildableIface *parent_buildable_iface;
static void gtk_list_box_buildable_interface_init (GtkBuildableIface *iface);
static void gtk_list_box_row_buildable_iface_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_WIDGET,
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_list_box_buildable_interface_init))
G_DEFINE_TYPE_WITH_CODE (GtkListBoxRow, gtk_list_box_row, GTK_TYPE_WIDGET,
G_ADD_PRIVATE (GtkListBoxRow)
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_list_box_row_buildable_iface_init )
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 (GtkWidgetClass *widget_class,
guint keyval,
GdkModifierType modmask,
GtkMovementStep step,
int count);
static void gtk_list_box_update_cursor (GtkListBox *box,
GtkListBoxRow *row,
gboolean grab_focus);
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 void gtk_list_box_compute_expand (GtkWidget *widget,
gboolean *hexpand,
gboolean *vexpand);
static GtkSizeRequestMode gtk_list_box_get_request_mode (GtkWidget *widget);
static void gtk_list_box_size_allocate (GtkWidget *widget,
int width,
int height,
int baseline);
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,
int count,
gboolean extend,
gboolean modify);
static void gtk_list_box_parent_cb (GObject *object,
GParamSpec *pspec,
gpointer user_data);
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_set_accept_unpaired_release (GtkListBox *box,
gboolean accept);
static void gtk_list_box_click_gesture_pressed (GtkGestureClick *gesture,
guint n_press,
double x,
double y,
GtkListBox *box);
static void gtk_list_box_click_gesture_released (GtkGestureClick *gesture,
guint n_press,
double x,
double y,
GtkListBox *box);
static void gtk_list_box_click_unpaired_release (GtkGestureClick *gesture,
double x,
double y,
guint button,
GdkEventSequence *sequence,
GtkListBox *box);
static void gtk_list_box_click_gesture_stopped (GtkGestureClick *gesture,
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 (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline);
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 };
static GtkBuildableIface *parent_row_buildable_iface;
static void
gtk_list_box_row_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *type)
{
if (GTK_IS_WIDGET (child))
gtk_list_box_row_set_child (GTK_LIST_BOX_ROW (buildable), GTK_WIDGET (child));
else
parent_row_buildable_iface->add_child (buildable, builder, child, type);
}
static void
gtk_list_box_row_buildable_iface_init (GtkBuildableIface *iface)
{
parent_row_buildable_iface = g_type_interface_peek_parent (iface);
iface->add_child = gtk_list_box_row_buildable_add_child;
}
/**
* gtk_list_box_new:
*
* Creates a new `GtkListBox` container.
*
* Returns: a new `GtkListBox`
*/
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)
{
GtkListBox *box = GTK_LIST_BOX (obj);
switch (property_id)
{
case PROP_SELECTION_MODE:
g_value_set_enum (value, box->selection_mode);
break;
case PROP_ACTIVATE_ON_SINGLE_CLICK:
g_value_set_boolean (value, box->activate_single_click);
break;
case PROP_ACCEPT_UNPAIRED_RELEASE:
g_value_set_boolean (value, box->accept_unpaired_release);
break;
case PROP_SHOW_SEPARATORS:
g_value_set_boolean (value, box->show_separators);
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;
case PROP_ACCEPT_UNPAIRED_RELEASE:
gtk_list_box_set_accept_unpaired_release (box, g_value_get_boolean (value));
break;
case PROP_SHOW_SEPARATORS:
gtk_list_box_set_show_separators (box, g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, property_id, pspec);
break;
}
}
static void
gtk_list_box_dispose (GObject *object)
{
GtkListBox *self = GTK_LIST_BOX (object);
if (self->bound_model)
{
if (self->create_widget_func_data_destroy)
self->create_widget_func_data_destroy (self->create_widget_func_data);
g_signal_handlers_disconnect_by_func (self->bound_model, gtk_list_box_bound_model_changed, self);
g_clear_object (&self->bound_model);
}
gtk_list_box_remove_all (self);
G_OBJECT_CLASS (gtk_list_box_parent_class)->dispose (object);
}
static void
gtk_list_box_finalize (GObject *obj)
{
GtkListBox *box = GTK_LIST_BOX (obj);
if (box->sort_func_target_destroy_notify != NULL)
box->sort_func_target_destroy_notify (box->sort_func_target);
if (box->filter_func_target_destroy_notify != NULL)
box->filter_func_target_destroy_notify (box->filter_func_target);
if (box->update_header_func_target_destroy_notify != NULL)
box->update_header_func_target_destroy_notify (box->update_header_func_target);
g_clear_object (&box->adjustment);
g_clear_object (&box->drag_highlighted_row);
g_sequence_free (box->children);
g_hash_table_unref (box->header_hash);
G_OBJECT_CLASS (gtk_list_box_parent_class)->finalize (obj);
}
static void
gtk_list_box_class_init (GtkListBoxClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
object_class->get_property = gtk_list_box_get_property;
object_class->set_property = gtk_list_box_set_property;
object_class->dispose = gtk_list_box_dispose;
object_class->finalize = gtk_list_box_finalize;
widget_class->show = gtk_list_box_show;
widget_class->focus = gtk_list_box_focus;
widget_class->grab_focus = gtk_widget_grab_focus_self;
widget_class->compute_expand = gtk_list_box_compute_expand;
widget_class->get_request_mode = gtk_list_box_get_request_mode;
widget_class->measure = gtk_list_box_measure;
widget_class->size_allocate = gtk_list_box_size_allocate;
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;
/**
* GtkListBox:selection-mode: (attributes org.gtk.Property.get=gtk_list_box_get_selection_mode org.gtk.Property.set=gtk_list_box_set_selection_mode)
*
* The selection mode used by the list box.
*/
properties[PROP_SELECTION_MODE] =
g_param_spec_enum ("selection-mode", NULL, NULL,
GTK_TYPE_SELECTION_MODE,
GTK_SELECTION_SINGLE,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkListBox:activate-on-single-click: (attributes org.gtk.Property.get=gtk_list_box_get_activate_on_single_click org.gtk.Property.set=gtk_list_box_set_activate_on_single_click)
*
* Determines whether children can be activated with a single
* click, or require a double-click.
*/
properties[PROP_ACTIVATE_ON_SINGLE_CLICK] =
g_param_spec_boolean ("activate-on-single-click", NULL, NULL,
TRUE,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkListBox:accept-unpaired-release:
*
* Whether to accept unpaired release events.
*/
properties[PROP_ACCEPT_UNPAIRED_RELEASE] =
g_param_spec_boolean ("accept-unpaired-release", NULL, NULL,
FALSE,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkListBox:show-separators: (attributes org.gtk.Property.get=gtk_list_box_get_show_separators org.gtk.Property.set=gtk_list_box_set_show_separators)
*
* Whether to show separators between rows.
*/
properties[PROP_SHOW_SEPARATORS] =
g_param_spec_boolean ("show-separators", NULL, NULL,
FALSE,
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
*
* 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 [signal@Gtk.ListBox::selected-rows-changed] signal instead.
*/
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 which the signal is emitted
*
* Emitted when the set of selected rows changes.
*/
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
*
* Emitted to select all children of the box, if the selection
* mode permits it.
*
* This is a [keybinding signal](class.SignalAction.html).
*
* The default binding for this signal is <kbd>Ctrl</kbd>-<kbd>a</kbd>.
*/
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
*
* Emitted to unselect all children of the box, if the selection
* mode permits it.
*
* This is a [keybinding signal](class.SignalAction.html).
*
* The default binding for this signal is
* <kbd>Ctrl</kbd>-<kbd>Shift</kbd>-<kbd>a</kbd>.
*/
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
*
* Emitted when a row has been activated by the user.
*/
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_BOOLEAN_BOOLEAN,
G_TYPE_NONE, 4,
GTK_TYPE_MOVEMENT_STEP, G_TYPE_INT, G_TYPE_BOOLEAN, G_TYPE_BOOLEAN);
g_signal_set_va_marshaller (signals[MOVE_CURSOR],
G_TYPE_FROM_CLASS (klass),
_gtk_marshal_VOID__ENUM_INT_BOOLEAN_BOOLEANv);
gtk_widget_class_set_activate_signal (widget_class, signals[ACTIVATE_CURSOR_ROW]);
gtk_list_box_add_move_binding (widget_class, GDK_KEY_Home, 0,
GTK_MOVEMENT_BUFFER_ENDS, -1);
gtk_list_box_add_move_binding (widget_class, GDK_KEY_KP_Home, 0,
GTK_MOVEMENT_BUFFER_ENDS, -1);
gtk_list_box_add_move_binding (widget_class, GDK_KEY_End, 0,
GTK_MOVEMENT_BUFFER_ENDS, 1);
gtk_list_box_add_move_binding (widget_class, GDK_KEY_KP_End, 0,
GTK_MOVEMENT_BUFFER_ENDS, 1);
gtk_list_box_add_move_binding (widget_class, GDK_KEY_Up, 0,
GTK_MOVEMENT_DISPLAY_LINES, -1);
gtk_list_box_add_move_binding (widget_class, GDK_KEY_KP_Up, 0,
GTK_MOVEMENT_DISPLAY_LINES, -1);
gtk_list_box_add_move_binding (widget_class, GDK_KEY_Down, 0,
GTK_MOVEMENT_DISPLAY_LINES, 1);
gtk_list_box_add_move_binding (widget_class, GDK_KEY_KP_Down, 0,
GTK_MOVEMENT_DISPLAY_LINES, 1);
gtk_list_box_add_move_binding (widget_class, GDK_KEY_Page_Up, 0,
GTK_MOVEMENT_PAGES, -1);
gtk_list_box_add_move_binding (widget_class, GDK_KEY_KP_Page_Up, 0,
GTK_MOVEMENT_PAGES, -1);
gtk_list_box_add_move_binding (widget_class, GDK_KEY_Page_Down, 0,
GTK_MOVEMENT_PAGES, 1);
gtk_list_box_add_move_binding (widget_class, GDK_KEY_KP_Page_Down, 0,
GTK_MOVEMENT_PAGES, 1);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_space, GDK_CONTROL_MASK,
"toggle-cursor-row",
NULL);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_KP_Space, GDK_CONTROL_MASK,
"toggle-cursor-row",
NULL);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_a, GDK_CONTROL_MASK,
"select-all",
NULL);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_a, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
"unselect-all",
NULL);
gtk_widget_class_set_css_name (widget_class, I_("list"));
gtk_widget_class_set_accessible_role (widget_class, GTK_ACCESSIBLE_ROLE_LIST);
}
static void
gtk_list_box_init (GtkListBox *box)
{
GtkWidget *widget = GTK_WIDGET (box);
GtkGesture *gesture;
gtk_widget_set_focusable (GTK_WIDGET (box), TRUE);
box->selection_mode = GTK_SELECTION_SINGLE;
box->activate_single_click = TRUE;
box->children = g_sequence_new (NULL);
box->header_hash = g_hash_table_new_full (g_direct_hash, g_direct_equal, NULL, NULL);
gesture = gtk_gesture_click_new ();
gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (gesture),
GTK_PHASE_BUBBLE);
gtk_gesture_single_set_touch_only (GTK_GESTURE_SINGLE (gesture),
FALSE);
gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (gesture),
GDK_BUTTON_PRIMARY);
g_signal_connect (gesture, "pressed",
G_CALLBACK (gtk_list_box_click_gesture_pressed), box);
g_signal_connect (gesture, "released",
G_CALLBACK (gtk_list_box_click_gesture_released), box);
g_signal_connect (gesture, "stopped",
G_CALLBACK (gtk_list_box_click_gesture_stopped), box);
g_signal_connect (gesture, "unpaired-release",
G_CALLBACK (gtk_list_box_click_unpaired_release), box);
gtk_widget_add_controller (widget, GTK_EVENT_CONTROLLER (gesture));
g_signal_connect (box, "notify::parent", G_CALLBACK (gtk_list_box_parent_cb), NULL);
}
/**
* gtk_list_box_get_selected_row:
* @box: a `GtkListBox`
*
* Gets the selected row, or %NULL if no rows are selected.
*
* Note that the box may allow multiple selection, in which
* case you should use [method@Gtk.ListBox.selected_foreach] to
* find all selected rows.
*
* Returns: (transfer none) (nullable): the selected row
*/
GtkListBoxRow *
gtk_list_box_get_selected_row (GtkListBox *box)
{
g_return_val_if_fail (GTK_IS_LIST_BOX (box), NULL);
return 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`
*/
GtkListBoxRow *
gtk_list_box_get_row_at_index (GtkListBox *box,
int index_)
{
GSequenceIter *iter;
g_return_val_if_fail (GTK_IS_LIST_BOX (box), NULL);
iter = g_sequence_get_iter_at_pos (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
*/
GtkListBoxRow *
gtk_list_box_get_row_at_y (GtkListBox *box,
int y)
{
GSequenceIter *iter;
g_return_val_if_fail (GTK_IS_LIST_BOX (box), NULL);
iter = g_sequence_lookup (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: (nullable): The row to select
*
* Make @row the currently selected row.
*/
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 unselect
*
* Unselects a single row of @box, if the selection mode allows it.
*/
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.
*/
void
gtk_list_box_select_all (GtkListBox *box)
{
g_return_if_fail (GTK_IS_LIST_BOX (box));
if (box->selection_mode != GTK_SELECTION_MULTIPLE)
return;
if (g_sequence_get_length (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.
*/
void
gtk_list_box_unselect_all (GtkListBox *box)
{
gboolean dirty = FALSE;
g_return_if_fail (GTK_IS_LIST_BOX (box));
if (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)
{
}
/**
* 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.
*/
/**
* 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.
*/
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->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.
*/
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->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: (nullable): a `GtkWidget`
*
* Sets the placeholder widget that is shown in the list when
* it doesn't display any visible children.
*/
void
gtk_list_box_set_placeholder (GtkListBox *box,
GtkWidget *placeholder)
{
g_return_if_fail (GTK_IS_LIST_BOX (box));
if (box->placeholder)
{
gtk_widget_unparent (box->placeholder);
gtk_widget_queue_resize (GTK_WIDGET (box));
}
box->placeholder = placeholder;
if (placeholder)
{
gtk_widget_set_parent (placeholder, GTK_WIDGET (box));
gtk_widget_set_child_visible (placeholder,
box->n_visible_rows == 0);
}
}
/**
* gtk_list_box_set_adjustment:
* @box: a `GtkListBox`
* @adjustment: (nullable): the adjustment
*
* 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.
*/
void
gtk_list_box_set_adjustment (GtkListBox *box,
GtkAdjustment *adjustment)
{
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 (box->adjustment)
g_object_unref (box->adjustment);
box->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) (nullable): the adjustment
*/
GtkAdjustment *
gtk_list_box_get_adjustment (GtkListBox *box)
{
g_return_val_if_fail (GTK_IS_LIST_BOX (box), NULL);
return 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_cb (GObject *object,
GParamSpec *pspec,
gpointer user_data)
{
GtkListBox *box = GTK_LIST_BOX (object);
GtkWidget *parent;
parent = gtk_widget_get_parent (GTK_WIDGET (object));
if (box->adjustment_changed_id != 0 &&
box->scrollable_parent != NULL)
{
g_signal_handler_disconnect (box->scrollable_parent,
box->adjustment_changed_id);
}
if (parent && GTK_IS_SCROLLABLE (parent))
{
adjustment_changed (G_OBJECT (parent), NULL, object);
box->scrollable_parent = parent;
box->adjustment_changed_id = g_signal_connect (parent, "notify::vadjustment",
G_CALLBACK (adjustment_changed), object);
}
else
{
gtk_list_box_set_adjustment (GTK_LIST_BOX (object), NULL);
box->adjustment_changed_id = 0;
box->scrollable_parent = NULL;
}
}
/**
* gtk_list_box_set_selection_mode: (attributes org.gtk.Method.set_property=selection-mode)
* @box: a `GtkListBox`
* @mode: The `GtkSelectionMode`
*
* Sets how selection works in the listbox.
*/
void
gtk_list_box_set_selection_mode (GtkListBox *box,
GtkSelectionMode mode)
{
gboolean dirty = FALSE;
g_return_if_fail (GTK_IS_LIST_BOX (box));
if (box->selection_mode == mode)
return;
if (mode == GTK_SELECTION_NONE ||
box->selection_mode == GTK_SELECTION_MULTIPLE)
dirty = gtk_list_box_unselect_all_internal (box);
box->selection_mode = mode;
gtk_list_box_update_row_styles (box);
gtk_accessible_update_property (GTK_ACCESSIBLE (box),
GTK_ACCESSIBLE_PROPERTY_MULTI_SELECTABLE, mode == GTK_SELECTION_MULTIPLE,
-1);
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: (attributes org.gtk.Method.get_property=selection-mode)
* @box: a `GtkListBox`
*
* Gets the selection mode of the listbox.
*
* Returns: a `GtkSelectionMode`
*/
GtkSelectionMode
gtk_list_box_get_selection_mode (GtkListBox *box)
{
g_return_val_if_fail (GTK_IS_LIST_BOX (box), GTK_SELECTION_NONE);
return box->selection_mode;
}
/**
* gtk_list_box_set_filter_func:
* @box: a `GtkListBox`
* @filter_func: (nullable): callback that lets you filter which rows to show
* @user_data: (closure): 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
* [method@Gtk.ListBoxRow.changed]) or when [method@Gtk.ListBox.invalidate_filter]
* is called.
*
* Note that using a filter function is incompatible with using a model
* (see [method@Gtk.ListBox.bind_model]).
*/
void
gtk_list_box_set_filter_func (GtkListBox *box,
GtkListBoxFilterFunc filter_func,
gpointer user_data,
GDestroyNotify destroy)
{
g_return_if_fail (GTK_IS_LIST_BOX (box));
if (box->filter_func_target_destroy_notify != NULL)
box->filter_func_target_destroy_notify (box->filter_func_target);
box->filter_func = filter_func;
box->filter_func_target = user_data;
box->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: (nullable): callback that lets you add row headers
* @user_data: (closure): user data passed to @update_header
* @destroy: destroy notifier for @user_data
*
* Sets a header function.
*
* 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
* [method@Gtk.ListBoxRow.get_header] and either update the state of the widget
* as needed, or set a new one using [method@Gtk.ListBoxRow.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
* [method@Gtk.ListBoxRow.changed]) and when the row before changes (either
* by [method@Gtk.ListBoxRow.changed] on the previous row, or when the previous
* row becomes a different row). It is also called for all rows when
* [method@Gtk.ListBox.invalidate_headers] is called.
*/
void
gtk_list_box_set_header_func (GtkListBox *box,
GtkListBoxUpdateHeaderFunc update_header,
gpointer user_data,
GDestroyNotify destroy)
{
g_return_if_fail (GTK_IS_LIST_BOX (box));
if (box->update_header_func_target_destroy_notify != NULL)
box->update_header_func_target_destroy_notify (box->update_header_func_target);
box->update_header_func = update_header;
box->update_header_func_target = user_data;
box->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.
*/
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 int
do_sort (GtkListBoxRow *a,
GtkListBoxRow *b,
GtkListBox *box)
{
return box->sort_func (a, b, box->sort_func_target);
}
static void
gtk_list_box_reorder_foreach (gpointer data,
gpointer user_data)
{
GtkWidget **previous = user_data;
GtkWidget *row = data;
if (*previous)
gtk_widget_insert_after (row, _gtk_widget_get_parent (row), *previous);
*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.
*/
void
gtk_list_box_invalidate_sort (GtkListBox *box)
{
GtkWidget *previous = NULL;
g_return_if_fail (GTK_IS_LIST_BOX (box));
if (box->sort_func == NULL)
return;
g_sequence_sort (box->children, (GCompareDataFunc)do_sort, box);
g_sequence_foreach (box->children, gtk_list_box_reorder_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->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.
*/
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: (nullable): the sort function
* @user_data: (closure): user data passed to @sort_func
* @destroy: destroy notifier for @user_data
*
* Sets a sort function.
*
* 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
* [method@Gtk.ListBoxRow.changed]) and when [method@Gtk.ListBox.invalidate_sort]
* is called.
*
* Note that using a sort function is incompatible with using a model
* (see [method@Gtk.ListBox.bind_model]).
*/
void
gtk_list_box_set_sort_func (GtkListBox *box,
GtkListBoxSortFunc sort_func,
gpointer user_data,
GDestroyNotify destroy)
{
g_return_if_fail (GTK_IS_LIST_BOX (box));
if (box->sort_func_target_destroy_notify != NULL)
box->sort_func_target_destroy_notify (box->sort_func_target);
box->sort_func = sort_func;
box->sort_func_target = user_data;
box->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)
{
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 (box->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: (attributes org.gtk.Method.set_property=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.
*/
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->activate_single_click == single)
return;
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: (attributes org.gtk.Method.get_property=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
*/
gboolean
gtk_list_box_get_activate_on_single_click (GtkListBox *box)
{
g_return_val_if_fail (GTK_IS_LIST_BOX (box), FALSE);
return box->activate_single_click;
}
void
gtk_list_box_set_accept_unpaired_release (GtkListBox *box,
gboolean accept)
{
if (box->accept_unpaired_release == accept)
return;
box->accept_unpaired_release = accept;
g_object_notify_by_pspec (G_OBJECT (box), properties[PROP_ACCEPT_UNPAIRED_RELEASE]);
}
static void
gtk_list_box_add_move_binding (GtkWidgetClass *widget_class,
guint keyval,
GdkModifierType modmask,
GtkMovementStep step,
int count)
{
gtk_widget_class_add_binding_signal (widget_class,
keyval, modmask,
"move-cursor",
"(iibb)", step, count, FALSE, FALSE);
gtk_widget_class_add_binding_signal (widget_class,
keyval, modmask | GDK_SHIFT_MASK,
"move-cursor",
"(iibb)", step, count, TRUE, FALSE);
gtk_widget_class_add_binding_signal (widget_class,
keyval, modmask | GDK_CONTROL_MASK,
"move-cursor",
"(iibb)", step, count, FALSE, TRUE);
gtk_widget_class_add_binding_signal (widget_class,
keyval, modmask | GDK_SHIFT_MASK | GDK_CONTROL_MASK,
"move-cursor",
"(iibb)", step, count, TRUE, TRUE);
}
static void
ensure_row_visible (GtkListBox *box,
GtkListBoxRow *row)
{
GtkWidget *header;
int y, height;
graphene_rect_t rect;
if (!box->adjustment)
return;
if (!gtk_widget_compute_bounds (GTK_WIDGET (row), GTK_WIDGET (box), &rect))
return;
y = rect.origin.y;
height = rect.size.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))
{
if (gtk_widget_compute_bounds (header, GTK_WIDGET (box), &rect))
{
y = rect.origin.y;
height += rect.size.height;
}
}
gtk_adjustment_clamp_page (box->adjustment, y, y + height);
}
static void
gtk_list_box_update_cursor (GtkListBox *box,
GtkListBoxRow *row,
gboolean grab_focus)
{
box->cursor_row = row;
ensure_row_visible (box, row);
if (grab_focus)
{
GtkWidget *focus;
focus = gtk_root_get_focus (gtk_widget_get_root (GTK_WIDGET (box)));
if (!focus || !gtk_widget_is_ancestor (focus, GTK_WIDGET (row)))
gtk_widget_grab_focus (GTK_WIDGET (row));
}
gtk_widget_queue_draw (GTK_WIDGET (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);
gtk_accessible_update_state (GTK_ACCESSIBLE (row),
GTK_ACCESSIBLE_STATE_SELECTED, selected,
-1);
return TRUE;
}
return FALSE;
}
static gboolean
gtk_list_box_unselect_all_internal (GtkListBox *box)
{
GtkListBoxRow *row;
GSequenceIter *iter;
gboolean dirty = FALSE;
if (box->selection_mode == GTK_SELECTION_NONE)
return FALSE;
for (iter = g_sequence_get_begin_iter (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->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->selection_mode == GTK_SELECTION_NONE)
return;
else if (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->selection_mode == GTK_SELECTION_NONE)
return;
if (box->selection_mode != GTK_SELECTION_MULTIPLE)
gtk_list_box_unselect_all_internal (box);
gtk_list_box_row_set_selected (row, TRUE);
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->children);
if (row2)
iter2 = ROW_PRIV (row2)->iter;
else
iter2 = g_sequence_get_end_iter (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)
{
gtk_list_box_update_cursor (box, row, grab_cursor);
if (box->selection_mode == GTK_SELECTION_NONE)
return;
if (!ROW_PRIV (row)->selectable)
return;
if (box->selection_mode == GTK_SELECTION_BROWSE)
{
gtk_list_box_unselect_all_internal (box);
gtk_list_box_row_set_selected (row, TRUE);
box->selected_row = row;
g_signal_emit (box, signals[ROW_SELECTED], 0, row);
}
else if (box->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);
box->selected_row = ROW_PRIV (row)->selected ? row : NULL;
g_signal_emit (box, signals[ROW_SELECTED], 0, box->selected_row);
}
else /* GTK_SELECTION_MULTIPLE */
{
if (extend)
{
GtkListBoxRow *selected_row;
selected_row = box->selected_row;
gtk_list_box_unselect_all_internal (box);
if (selected_row == NULL)
{
gtk_list_box_row_set_selected (row, TRUE);
box->selected_row = row;
g_signal_emit (box, signals[ROW_SELECTED], 0, row);
}
else
{
gtk_list_box_select_all_between (box, selected_row, row, FALSE);
box->selected_row = selected_row;
}
}
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);
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_activate (GtkListBox *box,
GtkListBoxRow *row)
{
if (!gtk_list_box_row_get_activatable (row))
return;
if (ROW_PRIV (row)->action_helper)
gtk_action_helper_activate (ROW_PRIV (row)->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_click_gesture_pressed (GtkGestureClick *gesture,
guint n_press,
double x,
double y,
GtkListBox *box)
{
GtkListBoxRow *row;
box->active_row = NULL;
row = gtk_list_box_get_row_at_y (box, y);
if (row != NULL && gtk_widget_is_sensitive (GTK_WIDGET (row)))
{
box->active_row = row;
if (n_press == 2 && !box->activate_single_click)
gtk_list_box_activate (box, row);
}
}
static void
gtk_list_box_click_unpaired_release (GtkGestureClick *gesture,
double x,
double y,
guint button,
GdkEventSequence *sequence,
GtkListBox *box)
{
GtkListBoxRow *row;
if (!box->activate_single_click || !box->accept_unpaired_release)
return;
row = gtk_list_box_get_row_at_y (box, y);
if (row)
gtk_list_box_select_and_activate (box, row);
}
static void
gtk_list_box_click_gesture_released (GtkGestureClick *gesture,
guint n_press,
double x,
double y,
GtkListBox *box)
{
/* Take a ref to protect against reentrancy
* (the activation may destroy the widget)
*/
g_object_ref (box);
if (box->active_row != NULL &&
box->active_row == gtk_list_box_get_row_at_y (box, y))
{
gboolean focus_on_click = gtk_widget_get_focus_on_click (GTK_WIDGET (box->active_row));
if (n_press == 1 && box->activate_single_click)
gtk_list_box_select_and_activate_full (box, box->active_row, focus_on_click);
else
{
GdkEventSequence *sequence;
GdkInputSource source;
GdkEvent *event;
GdkModifierType state;
gboolean extend;
gboolean modify;
/* 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);
state = gdk_event_get_modifier_state (event);
extend = (state & GDK_SHIFT_MASK) != 0;
modify = (state & GDK_CONTROL_MASK) != 0;
source = gdk_device_get_source (gdk_event_get_device (event));
if (source == GDK_SOURCE_TOUCHSCREEN)
modify = !modify;
gtk_list_box_update_selection_full (box, box->active_row, modify, extend, focus_on_click);
}
}
if (box->active_row)
{
box->active_row = NULL;
}
g_object_unref (box);
}
static void
gtk_list_box_click_gesture_stopped (GtkGestureClick *gesture,
GtkListBox *box)
{
if (box->active_row)
{
box->active_row = NULL;
gtk_widget_queue_draw (GTK_WIDGET (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);
GtkWidget *focus_child;
GtkListBoxRow *next_focus_row;
GtkWidget *row;
GtkWidget *header;
focus_child = gtk_widget_get_focus_child (widget);
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 (box->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 (box->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 = box->selected_row;
if (next_focus_row == NULL)
next_focus_row = gtk_list_box_get_last_focusable (box);
break;
case GTK_DIR_DOWN:
case GTK_DIR_TAB_FORWARD:
case GTK_DIR_LEFT:
case GTK_DIR_RIGHT:
default:
next_focus_row = box->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 void
list_box_add_visible_rows (GtkListBox *box,
int n)
{
int was_zero;
was_zero = box->n_visible_rows == 0;
box->n_visible_rows += n;
if (box->placeholder &&
(was_zero || box->n_visible_rows == 0))
gtk_widget_set_child_visible (GTK_WIDGET (box->placeholder),
box->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)
{
gboolean do_show;
do_show = TRUE;
if (box->filter_func != NULL)
do_show = box->filter_func (row, box->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->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->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->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)
{
GtkListBoxRow *row;
GSequenceIter *before_iter;
GtkListBoxRow *before_row;
GtkWidget *old_header, *new_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 (box->update_header_func != NULL &&
row_is_visible (row))
{
old_header = ROW_PRIV (row)->header;
if (old_header)
g_object_ref (old_header);
box->update_header_func (row,
before_row,
box->update_header_func_target);
new_header = ROW_PRIV (row)->header;
if (old_header != new_header)
{
if (old_header != NULL &&
g_hash_table_lookup (box->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 (box->header_hash, old_header);
}
if (new_header != NULL)
{
g_hash_table_insert (box->header_hash, new_header, row);
gtk_widget_unparent (new_header);
gtk_widget_set_parent (new_header, GTK_WIDGET (box));
gtk_widget_set_visible (new_header, TRUE);
}
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 (box->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));
}
}
/**
* gtk_list_box_remove:
* @box: a `GtkListBox`
* @child: the child to remove
*
* Removes a child from @box.
*/
void
gtk_list_box_remove (GtkListBox *box,
GtkWidget *child)
{
GtkWidget *widget;
gboolean was_visible;
gboolean was_selected;
GtkListBoxRow *row;
GSequenceIter *iter;
GSequenceIter *next;
g_return_if_fail (GTK_IS_LIST_BOX (box));
g_return_if_fail (GTK_IS_WIDGET (child));
widget = GTK_WIDGET (box);
was_visible = gtk_widget_get_visible (child);
if (child == box->placeholder)
{
gtk_widget_unparent (child);
box->placeholder = NULL;
if (was_visible && gtk_widget_get_visible (widget))
gtk_widget_queue_resize (widget);
return;
}
if (!GTK_IS_LIST_BOX_ROW (child))
{
row = g_hash_table_lookup (box->header_hash, child);
if (row != NULL)
{
g_hash_table_remove (box->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);
iter = ROW_PRIV (row)->iter;
if (g_sequence_iter_get_sequence (iter) != box->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 (box->header_hash, ROW_PRIV (row)->header);
gtk_widget_unparent (ROW_PRIV (row)->header);
g_clear_object (&ROW_PRIV (row)->header);
}
if (row == box->selected_row)
box->selected_row = NULL;
if (row == box->cursor_row)
box->cursor_row = NULL;
if (row == box->active_row)
box->active_row = NULL;
if (row == box->drag_highlighted_row)
gtk_list_box_drag_unhighlight_row (box);
next = gtk_list_box_get_next_visible (box, iter);
gtk_widget_unparent (child);
g_sequence_remove (iter);
/* After unparenting, those values are garbage */
iter = NULL;
row = NULL;
child = NULL;
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);
}
}
/**
* gtk_list_box_remove_all:
* @box: a `GtkListBox`
*
* Removes all rows from @box.
*
* This function does nothing if @box is backed by a model.
*
* Since: 4.12
*/
void
gtk_list_box_remove_all (GtkListBox *box)
{
GtkWidget *widget = GTK_WIDGET (box);
GtkWidget *child;
g_return_if_fail (GTK_IS_LIST_BOX (box));
if (box->bound_model)
return;
while ((child = gtk_widget_get_first_child (widget)) != NULL)
gtk_list_box_remove (box, child);
}
static void
gtk_list_box_compute_expand (GtkWidget *widget,
gboolean *hexpand_p,
gboolean *vexpand_p)
{
GtkWidget *w;
gboolean hexpand = FALSE;
gboolean vexpand = FALSE;
for (w = gtk_widget_get_first_child (widget);
w != NULL;
w = gtk_widget_get_next_sibling (w))
{
hexpand = hexpand || gtk_widget_compute_expand (w, GTK_ORIENTATION_HORIZONTAL);
vexpand = vexpand || gtk_widget_compute_expand (w, GTK_ORIENTATION_VERTICAL);
}
*hexpand_p = hexpand;
*vexpand_p = vexpand;
/* We don't expand vertically beyond the minimum size */
if (*vexpand_p)
*vexpand_p = FALSE;
}
static GtkSizeRequestMode
gtk_list_box_get_request_mode (GtkWidget *widget)
{
return GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
}
static void
gtk_list_box_measure (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
{
GtkListBox *box = GTK_LIST_BOX (widget);
GSequenceIter *iter;
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
*minimum = 0;
*natural = 0;
if (box->placeholder && gtk_widget_get_child_visible (box->placeholder))
gtk_widget_measure (box->placeholder, GTK_ORIENTATION_HORIZONTAL, -1,
minimum, natural,
NULL, NULL);
for (iter = g_sequence_get_begin_iter (box->children);
!g_sequence_iter_is_end (iter);
iter = g_sequence_iter_next (iter))
{
GtkListBoxRow *row;
int row_min;
int 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_measure (GTK_WIDGET (row), orientation, -1,
&row_min, &row_nat,
NULL, NULL);
*minimum = MAX (*minimum, row_min);
*natural = MAX (*natural, row_nat);
if (ROW_PRIV (row)->header != NULL)
{
gtk_widget_measure (ROW_PRIV (row)->header, orientation, -1,
&row_min, &row_nat,
NULL, NULL);
*minimum = MAX (*minimum, row_min);
*natural = MAX (*natural, row_nat);
}
}
}
else
{
if (for_size < 0)
{
int f;
gtk_list_box_measure (widget, GTK_ORIENTATION_HORIZONTAL, -1,
&f, &for_size, NULL, NULL);
}
*minimum = 0;
if (box->placeholder && gtk_widget_get_child_visible (box->placeholder))
gtk_widget_measure (box->placeholder, orientation, for_size,
minimum, NULL,
NULL, NULL);
for (iter = g_sequence_get_begin_iter (box->children);
!g_sequence_iter_is_end (iter);
iter = g_sequence_iter_next (iter))
{
GtkListBoxRow *row;
int row_min = 0;
row = g_sequence_get (iter);
if (!row_is_visible (row))
continue;
if (ROW_PRIV (row)->header != NULL)
{
gtk_widget_measure (ROW_PRIV (row)->header, orientation, for_size,
&row_min, NULL,
NULL, NULL);
*minimum += row_min;
}
gtk_widget_measure (GTK_WIDGET (row), orientation, for_size,
&row_min, NULL,
NULL, 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,
int width,
int height,
int baseline)
{
GtkListBox *box = GTK_LIST_BOX (widget);
GtkAllocation child_allocation;
GtkAllocation header_allocation;
GtkListBoxRow *row;
GSequenceIter *iter;
int child_min;
child_allocation.x = 0;
child_allocation.y = 0;
child_allocation.width = width;
child_allocation.height = 0;
header_allocation.x = 0;
header_allocation.y = 0;
header_allocation.width = width;
header_allocation.height = 0;
if (box->placeholder && gtk_widget_get_child_visible (box->placeholder))
{
gtk_widget_measure (box->placeholder, GTK_ORIENTATION_VERTICAL,
width,
&child_min, NULL, NULL, NULL);
header_allocation.height = height;
header_allocation.y = child_allocation.y;
gtk_widget_size_allocate (box->placeholder, &header_allocation, -1);
child_allocation.y += child_min;
}
for (iter = g_sequence_get_begin_iter (box->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_measure (ROW_PRIV (row)->header, GTK_ORIENTATION_VERTICAL,
width,
&child_min, NULL, NULL, NULL);
header_allocation.height = child_min;
header_allocation.y = child_allocation.y;
gtk_widget_size_allocate (ROW_PRIV (row)->header,
&header_allocation,
-1);
child_allocation.y += child_min;
}
ROW_PRIV (row)->y = child_allocation.y;
gtk_widget_measure (GTK_WIDGET (row), GTK_ORIENTATION_VERTICAL,
child_allocation.width,
&child_min, NULL, NULL, NULL);
child_allocation.height = child_min;
ROW_PRIV (row)->height = child_allocation.height;
gtk_widget_size_allocate (GTK_WIDGET (row), &child_allocation, -1);
child_allocation.y += child_min;
}
}
/**
* 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.
*/
void
gtk_list_box_prepend (GtkListBox *box,
GtkWidget *child)
{
gtk_list_box_insert (box, child, 0);
}
/**
* gtk_list_box_append:
* @box: a `GtkListBox`
* @child: the `GtkWidget` to add
*
* Append a widget to the list.
*
* If a sort function is set, the widget will
* actually be inserted at the calculated position.
*/
void
gtk_list_box_append (GtkListBox *box,
GtkWidget *child)
{
gtk_list_box_insert (box, child, -1);
}
/**
* 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.
*
* If @position is -1, or larger than the total number of items in the
* @box, then the @child will be appended to the end.
*/
void
gtk_list_box_insert (GtkListBox *box,
GtkWidget *child,
int position)
{
GtkListBoxRow *row;
GSequenceIter *prev = NULL;
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_list_box_row_set_child (GTK_LIST_BOX_ROW (row), child);
}
if (box->sort_func != NULL)
iter = g_sequence_insert_sorted (box->children, row,
(GCompareDataFunc)do_sort, box);
else if (position == 0)
iter = g_sequence_prepend (box->children, row);
else if (position == -1)
iter = g_sequence_append (box->children, row);
else
{
GSequenceIter *current_iter;
current_iter = g_sequence_get_iter_at_pos (box->children, position);
iter = g_sequence_insert_before (current_iter, row);
}
ROW_PRIV (row)->iter = iter;
prev = g_sequence_iter_prev (iter);
gtk_widget_insert_after (GTK_WIDGET (row), GTK_WIDGET (box),
prev != iter ? g_sequence_get (prev) : NULL);
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.
*/
void
gtk_list_box_drag_unhighlight_row (GtkListBox *box)
{
g_return_if_fail (GTK_IS_LIST_BOX (box));
if (box->drag_highlighted_row == NULL)
return;
gtk_widget_unset_state_flags (GTK_WIDGET (box->drag_highlighted_row), GTK_STATE_FLAG_DROP_ACTIVE);
g_clear_object (&box->drag_highlighted_row);
}
/**
* gtk_list_box_drag_highlight_row:
* @box: a `GtkListBox`
* @row: a `GtkListBoxRow`
*
* Add a drag highlight to a row.
*
* This is a helper function for implementing DnD onto a `GtkListBox`.
* The passed in @row will be highlighted by setting the
* %GTK_STATE_FLAG_DROP_ACTIVE state and any previously highlighted
* row will be unhighlighted.
*
* The row will also be unhighlighted when the widget gets
* a drag leave event.
*/
void
gtk_list_box_drag_highlight_row (GtkListBox *box,
GtkListBoxRow *row)
{
g_return_if_fail (GTK_IS_LIST_BOX (box));
g_return_if_fail (GTK_IS_LIST_BOX_ROW (row));
if (box->drag_highlighted_row == row)
return;
gtk_list_box_drag_unhighlight_row (box);
gtk_widget_set_state_flags (GTK_WIDGET (row), GTK_STATE_FLAG_DROP_ACTIVE, FALSE);
box->drag_highlighted_row = g_object_ref (row);
}
static void
gtk_list_box_activate_cursor_row (GtkListBox *box)
{
gtk_list_box_select_and_activate (box, box->cursor_row);
}
static void
gtk_list_box_toggle_cursor_row (GtkListBox *box)
{
if (box->cursor_row == NULL)
return;
if ((box->selection_mode == GTK_SELECTION_SINGLE ||
box->selection_mode == GTK_SELECTION_MULTIPLE) &&
ROW_PRIV (box->cursor_row)->selected)
gtk_list_box_unselect_row_internal (box, box->cursor_row);
else
gtk_list_box_select_and_activate (box, box->cursor_row);
}
static void
gtk_list_box_move_cursor (GtkListBox *box,
GtkMovementStep step,
int count,
gboolean extend,
gboolean modify)
{
GtkListBoxRow *row;
int page_size;
GSequenceIter *iter;
int start_y;
int end_y;
int height;
row = NULL;
switch ((guint) 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 (box->cursor_row != NULL)
{
int i = count;
iter = ROW_PRIV (box->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 (box->adjustment != NULL)
page_size = gtk_adjustment_get_page_increment (box->adjustment);
if (box->cursor_row != NULL)
{
start_y = ROW_PRIV (box->cursor_row)->y;
height = gtk_widget_get_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 (box->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 == box->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 && box->adjustment != NULL)
gtk_adjustment_animate_to_value (box->adjustment, end_y);
}
break;
default:
return;
}
if (row == NULL || row == box->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 (gtk_widget_get_root (GTK_WIDGET (box)));
if (toplevel)
gtk_widget_child_focus (toplevel,
direction == GTK_DIR_UP ?
GTK_DIR_TAB_BACKWARD :
GTK_DIR_TAB_FORWARD);
}
return;
}
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`.
*
* Returns: a new `GtkListBoxRow`
*/
GtkWidget *
gtk_list_box_row_new (void)
{
return g_object_new (GTK_TYPE_LIST_BOX_ROW, NULL);
}
/**
* gtk_list_box_row_set_child: (attributes org.gtk.Method.set_property=child)
* @row: a `GtkListBoxRow`
* @child: (nullable): the child widget
*
* Sets the child widget of @self.
*/
void
gtk_list_box_row_set_child (GtkListBoxRow *row,
GtkWidget *child)
{
GtkListBoxRowPrivate *priv = ROW_PRIV (row);
g_return_if_fail (GTK_IS_LIST_BOX_ROW (row));
g_return_if_fail (child == NULL || priv->child == child || gtk_widget_get_parent (child) == NULL);
if (priv->child == child)
return;
g_clear_pointer (&priv->child, gtk_widget_unparent);
priv->child = child;
if (child)
gtk_widget_set_parent (child, GTK_WIDGET (row));
g_object_notify_by_pspec (G_OBJECT (row), row_properties[ROW_PROP_CHILD]);
}
/**
* gtk_list_box_row_get_child: (attributes org.gtk.Method.get_property=child)
* @row: a `GtkListBoxRow`
*
* Gets the child widget of @row.
*
* Returns: (nullable) (transfer none): the child widget of @row
*/
GtkWidget *
gtk_list_box_row_get_child (GtkListBoxRow *row)
{
return ROW_PRIV (row)->child;
}
static void
gtk_list_box_row_set_focus (GtkListBoxRow *row)
{
GtkListBox *box = gtk_list_box_row_get_box (row);
if (!box)
return;
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 = ROW_PRIV (row)->child;
GtkWidget *focus_child = gtk_widget_get_focus_child (widget);
g_object_get (widget, "has-focus", &had_focus, NULL);
/* If a child has focus, always try to navigate within that first. */
if (focus_child != NULL)
{
if (gtk_widget_child_focus (focus_child, direction))
return TRUE;
}
/* Otherwise, decide based on the direction. */
if (direction == GTK_DIR_RIGHT || direction == GTK_DIR_TAB_FORWARD)
{
/* If a child was focused and focus couldn't be moved within that (see
* above), let focus leave. */
if (focus_child != NULL)
return FALSE;
/* If the row is not focused, try to focus it. */
if (!had_focus && gtk_widget_grab_focus (widget))
{
gtk_list_box_row_set_focus (row);
return TRUE;
}
/* Finally, try to move focus into the child. */
if (child != NULL && gtk_widget_child_focus (child, direction))
return TRUE;
return FALSE;
}
else if (direction == GTK_DIR_LEFT || direction == GTK_DIR_TAB_BACKWARD)
{
/* If the row itself is focused, let focus leave it. */
if (had_focus)
return FALSE;
/* Otherwise, let focus enter the child widget, if possible. */
if (child != NULL && gtk_widget_child_focus (child, direction))
return TRUE;
/* If that didn't work, try to focus the row itself. */
if (gtk_widget_grab_focus (widget))
{
gtk_list_box_row_set_focus (row);
return TRUE;
}
return FALSE;
}
return FALSE;
}
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 void
gtk_list_box_row_root (GtkWidget *widget)
{
GtkListBoxRow *row = GTK_LIST_BOX_ROW (widget);
GTK_WIDGET_CLASS (gtk_list_box_row_parent_class)->root (widget);
if (ROW_PRIV (row)->selectable)
gtk_accessible_update_state (GTK_ACCESSIBLE (row),
GTK_ACCESSIBLE_STATE_SELECTED, ROW_PRIV (row)->selected,
-1);
}
/**
* 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 [method@Gtk.ListBox.invalidate_sort] on any model change,
* but that is more expensive.
*/
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 [callback@Gtk.ListBoxUpdateHeaderFunc] 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
*/
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: (nullable): the header
*
* Sets the current header of the @row.
*
* This is only allowed to be called
* from a [callback@Gtk.ListBoxUpdateHeaderFunc].
* It will replace any existing header in the row,
* and be shown in front of the row in the listbox.
*/
void
gtk_list_box_row_set_header (GtkListBoxRow *row,
GtkWidget *header)
{
GtkListBoxRowPrivate *priv = ROW_PRIV (row);
g_return_if_fail (GTK_IS_LIST_BOX_ROW (row));
g_return_if_fail (header == NULL || GTK_IS_WIDGET (header));
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
*/
int
gtk_list_box_row_get_index (GtkListBoxRow *row)
{
GtkListBoxRowPrivate *priv = ROW_PRIV (row);
g_return_val_if_fail (GTK_IS_LIST_BOX_ROW (row), -1);
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
*/
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)
{
gboolean can_select;
if (box && box->selection_mode != GTK_SELECTION_NONE)
can_select = TRUE;
else
can_select = FALSE;
if (ROW_PRIV (row)->activatable ||
(ROW_PRIV (row)->selectable && can_select))
gtk_widget_add_css_class (GTK_WIDGET (row), "activatable");
else
gtk_widget_remove_css_class (GTK_WIDGET (row), "activatable");
}
static void
gtk_list_box_update_row_styles (GtkListBox *box)
{
GSequenceIter *iter;
GtkListBoxRow *row;
for (iter = g_sequence_get_begin_iter (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: (attributes org.gtk.Method.set_property=activatable)
* @row: a `GtkListBoxRow`
* @activatable: %TRUE to mark the row as activatable
*
* Set whether the row is activatable.
*/
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: (attributes org.gtk.Method.get_property=activatable)
* @row: a `GtkListBoxRow`
*
* Gets whether the row is activatable.
*
* Returns: %TRUE if the row is activatable
*/
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: (attributes org.gtk.Method.set_property=selectable)
* @row: a `GtkListBoxRow`
* @selectable: %TRUE to mark the row as selectable
*
* Set whether the row can be selected.
*/
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;
if (selectable)
gtk_accessible_update_state (GTK_ACCESSIBLE (row),
GTK_ACCESSIBLE_STATE_SELECTED, FALSE,
-1);
else
gtk_accessible_reset_state (GTK_ACCESSIBLE (row),
GTK_ACCESSIBLE_STATE_SELECTED);
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: (attributes org.gtk.Method.get_property=selectable)
* @row: a `GtkListBoxRow`
*
* Gets whether the row can be selected.
*
* Returns: %TRUE if the row is selectable
*/
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 char *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;
case ROW_PROP_CHILD:
g_value_set_object (value, gtk_list_box_row_get_child (row));
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;
case ROW_PROP_CHILD:
gtk_list_box_row_set_child (row, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, property_id, pspec);
break;
}
}
static const char *
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_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_clear_pointer (&priv->child, gtk_widget_unparent);
G_OBJECT_CLASS (gtk_list_box_row_parent_class)->dispose (object);
}
static gboolean
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_val_if_fail (box != NULL, FALSE);
if (gtk_widget_grab_focus_self (widget))
{
if (box->cursor_row != row)
gtk_list_box_update_cursor (box, row, FALSE);
return TRUE;
}
return FALSE;
}
static void
gtk_list_box_row_class_init (GtkListBoxRowClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
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->root = gtk_list_box_row_root;
widget_class->show = gtk_list_box_row_show;
widget_class->hide = gtk_list_box_row_hide;
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 [signal@Gtk.ListBox::row-activated] signal on the row’s parent
* `GtkListBox`.
*/
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);
gtk_widget_class_set_activate_signal (widget_class, row_signals[ROW__ACTIVATE]);
/**
* GtkListBoxRow:activatable: (attributes org.gtk.Property.get=gtk_list_box_row_get_activatable org.gtk.Property.set=gtk_list_box_row_set_activatable)
*
* Determines whether the ::row-activated
* signal will be emitted for this row.
*/
row_properties[ROW_PROP_ACTIVATABLE] =
g_param_spec_boolean ("activatable", NULL, NULL,
TRUE,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkListBoxRow:selectable: (attributes org.gtk.Property.get=gtk_list_box_row_get_selectable org.gtk.Property.set=gtk_list_box_row_set_selectable)
*
* Determines whether this row can be selected.
*/
row_properties[ROW_PROP_SELECTABLE] =
g_param_spec_boolean ("selectable", NULL, NULL,
TRUE,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkListBoxRow:child: (attributes org.gtk.Property.get=gtk_list_box_row_get_child org.gtk.Property.set=gtk_list_box_row_set_child)
*
* The child widget.
*/
row_properties[ROW_PROP_CHILD] =
g_param_spec_object ("child", NULL, NULL,
GTK_TYPE_WIDGET,
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_layout_manager_type (widget_class, GTK_TYPE_BIN_LAYOUT);
gtk_widget_class_set_css_name (widget_class, I_("row"));
gtk_widget_class_set_accessible_role (widget_class, GTK_ACCESSIBLE_ROLE_LIST_ITEM);
}
static void
gtk_list_box_row_init (GtkListBoxRow *row)
{
ROW_PRIV (row)->activatable = TRUE;
ROW_PRIV (row)->selectable = TRUE;
gtk_widget_set_focusable (GTK_WIDGET (row), TRUE);
gtk_widget_add_css_class (GTK_WIDGET (row), "activatable");
}
static void
gtk_list_box_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *type)
{
if (type && strcmp (type, "placeholder") == 0)
gtk_list_box_set_placeholder (GTK_LIST_BOX (buildable), GTK_WIDGET (child));
else if (GTK_IS_WIDGET (child))
gtk_list_box_insert (GTK_LIST_BOX (buildable), GTK_WIDGET (child), -1);
else
parent_buildable_iface->add_child (buildable, builder, child, type);
}
static void
gtk_list_box_buildable_interface_init (GtkBuildableIface *iface)
{
parent_buildable_iface = g_type_interface_peek_parent (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;
guint i;
while (removed--)
{
GtkListBoxRow *row;
row = gtk_list_box_get_row_at_index (box, position);
gtk_list_box_remove (box, GTK_WIDGET (row));
}
for (i = 0; i < added; i++)
{
GObject *item;
GtkWidget *widget;
item = g_list_model_get_item (list, position + i);
widget = box->create_widget_func (item, box->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_set_visible (widget, TRUE);
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)
{
if (box->bound_model &&
(box->sort_func || box->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: (closure): 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
* [method@Gtk.ListBox.insert]) 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.
*/
void
gtk_list_box_bind_model (GtkListBox *box,
GListModel *model,
GtkListBoxCreateWidgetFunc create_widget_func,
gpointer user_data,
GDestroyNotify user_data_free_func)
{
GSequenceIter *iter;
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 (box->bound_model)
{
if (box->create_widget_func_data_destroy)
box->create_widget_func_data_destroy (box->create_widget_func_data);
g_signal_handlers_disconnect_by_func (box->bound_model, gtk_list_box_bound_model_changed, box);
g_clear_object (&box->bound_model);
}
iter = g_sequence_get_begin_iter (box->children);
while (!g_sequence_iter_is_end (iter))
{
GtkWidget *row = g_sequence_get (iter);
iter = g_sequence_iter_next (iter);
gtk_list_box_remove (box, row);
}
if (model == NULL)
return;
box->bound_model = g_object_ref (model);
box->create_widget_func = create_widget_func;
box->create_widget_func_data = user_data;
box->create_widget_func_data_destroy = user_data_free_func;
gtk_list_box_check_model_compat (box);
g_signal_connect (box->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);
}
/**
* gtk_list_box_set_show_separators: (attributes org.gtk.Method.set_property=show-separators)
* @box: a `GtkListBox`
* @show_separators: %TRUE to show separators
*
* Sets whether the list box should show separators
* between rows.
*/
void
gtk_list_box_set_show_separators (GtkListBox *box,
gboolean show_separators)
{
g_return_if_fail (GTK_IS_LIST_BOX (box));
if (box->show_separators == show_separators)
return;
box->show_separators = show_separators;
if (show_separators)
gtk_widget_add_css_class (GTK_WIDGET (box), "separators");
else
gtk_widget_remove_css_class (GTK_WIDGET (box), "separators");
g_object_notify_by_pspec (G_OBJECT (box), properties[PROP_SHOW_SEPARATORS]);
}
/**
* gtk_list_box_get_show_separators: (attributes org.gtk.Method.get_property=show-separators)
* @box: a `GtkListBox`
*
* Returns whether the list box should show separators
* between rows.
*
* Returns: %TRUE if the list box shows separators
*/
gboolean
gtk_list_box_get_show_separators (GtkListBox *box)
{
g_return_val_if_fail (GTK_IS_LIST_BOX (box), FALSE);
return box->show_separators;
}
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