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gtk2/gtk/gtklist.c
Owen Taylor aa49527fa7 Enforce the widget/child realization/mapping invariants. 
Sat Jul  7 02:50:14 2001  Owen Taylor  <otaylor@redhat.com>

	* gtk/gtkwidget.c (gtk_widget_set_parent): Enforce
	the widget/child realization/mapping invariants.

	* gtk/gtkwidget.[ch] gtk/gtkprivate.h: Add functions
	gtk_widget_[get/set]_child_visible() to control
	whether visible children of a mapped window are
	mapped.

	* docs/widget_system.txt: Updated for changes in
	container contract, and addition of GTK_CHILD_VISIBLE.

	* gtk/gtkcontainer.c: Add generic map()/unmap()
	functions that work for almost all containers.

	* gtk/gtknotebook.c gtk/gtkpacker.c: Use
	gtk_widget_set_child_visible() where necessary.

	* gtk/*.c: Remove excess map(), unmap(), and
	realization/mapping invariant enforcing code
	from many containers.
2001-07-19 14:57:15 +00:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include <string.h> /* memset */
#include "gtklist.h"
#include "gtklistitem.h"
#include "gtkmain.h"
#include "gtksignal.h"
#include "gtklabel.h"
enum {
SELECTION_CHANGED,
SELECT_CHILD,
UNSELECT_CHILD,
LAST_SIGNAL
};
enum {
ARG_0,
ARG_SELECTION_MODE
};
#define SCROLL_TIME 100
/*** GtkList Methods ***/
static void gtk_list_class_init (GtkListClass *klass);
static void gtk_list_init (GtkList *list);
static void gtk_list_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
static void gtk_list_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
/*** GtkObject Methods ***/
static void gtk_list_dispose (GObject *object);
/*** GtkWidget Methods ***/
static void gtk_list_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_list_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_list_realize (GtkWidget *widget);
static void gtk_list_unmap (GtkWidget *widget);
static void gtk_list_style_set (GtkWidget *widget,
GtkStyle *previous_style);
static gint gtk_list_motion_notify (GtkWidget *widget,
GdkEventMotion *event);
static gint gtk_list_button_press (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_list_button_release (GtkWidget *widget,
GdkEventButton *event);
static gboolean gtk_list_focus (GtkWidget *widget,
GtkDirectionType direction);
/*** GtkContainer Methods ***/
static void gtk_list_add (GtkContainer *container,
GtkWidget *widget);
static void gtk_list_remove (GtkContainer *container,
GtkWidget *widget);
static void gtk_list_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
static GtkType gtk_list_child_type (GtkContainer *container);
static void gtk_list_set_focus_child (GtkContainer *container,
GtkWidget *widget);
/*** GtkList Private Functions ***/
static void gtk_list_move_focus_child (GtkList *list,
GtkScrollType scroll_type,
gfloat position);
static gint gtk_list_horizontal_timeout (GtkWidget *list);
static gint gtk_list_vertical_timeout (GtkWidget *list);
static void gtk_list_remove_items_internal (GtkList *list,
GList *items,
gboolean no_unref);
/*** GtkList Selection Methods ***/
static void gtk_real_list_select_child (GtkList *list,
GtkWidget *child);
static void gtk_real_list_unselect_child (GtkList *list,
GtkWidget *child);
/*** GtkList Selection Functions ***/
static void gtk_list_set_anchor (GtkList *list,
gboolean add_mode,
gint anchor,
GtkWidget *undo_focus_child);
static void gtk_list_fake_unselect_all (GtkList *list,
GtkWidget *item);
static void gtk_list_fake_toggle_row (GtkList *list,
GtkWidget *item);
static void gtk_list_update_extended_selection (GtkList *list,
gint row);
static void gtk_list_reset_extended_selection (GtkList *list);
/*** GtkListItem Signal Functions ***/
static void gtk_list_signal_drag_begin (GtkWidget *widget,
GdkDragContext *context,
GtkList *list);
static void gtk_list_signal_toggle_focus_row (GtkListItem *list_item,
GtkList *list);
static void gtk_list_signal_select_all (GtkListItem *list_item,
GtkList *list);
static void gtk_list_signal_unselect_all (GtkListItem *list_item,
GtkList *list);
static void gtk_list_signal_undo_selection (GtkListItem *list_item,
GtkList *list);
static void gtk_list_signal_start_selection (GtkListItem *list_item,
GtkList *list);
static void gtk_list_signal_end_selection (GtkListItem *list_item,
GtkList *list);
static void gtk_list_signal_extend_selection (GtkListItem *list_item,
GtkScrollType scroll_type,
gfloat position,
gboolean auto_start_selection,
GtkList *list);
static void gtk_list_signal_scroll_horizontal (GtkListItem *list_item,
GtkScrollType scroll_type,
gfloat position,
GtkList *list);
static void gtk_list_signal_scroll_vertical (GtkListItem *list_item,
GtkScrollType scroll_type,
gfloat position,
GtkList *list);
static void gtk_list_signal_toggle_add_mode (GtkListItem *list_item,
GtkList *list);
static void gtk_list_signal_item_select (GtkListItem *list_item,
GtkList *list);
static void gtk_list_signal_item_deselect (GtkListItem *list_item,
GtkList *list);
static void gtk_list_signal_item_toggle (GtkListItem *list_item,
GtkList *list);
static void gtk_list_drag_begin (GtkWidget *widget,
GdkDragContext *context);
static GtkContainerClass *parent_class = NULL;
static guint list_signals[LAST_SIGNAL] = { 0 };
static const gchar *vadjustment_key = "gtk-vadjustment";
static guint vadjustment_key_id = 0;
static const gchar *hadjustment_key = "gtk-hadjustment";
static guint hadjustment_key_id = 0;
GtkType
gtk_list_get_type (void)
{
static GtkType list_type = 0;
if (!list_type)
{
static const GtkTypeInfo list_info =
{
"GtkList",
sizeof (GtkList),
sizeof (GtkListClass),
(GtkClassInitFunc) gtk_list_class_init,
(GtkObjectInitFunc) gtk_list_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
list_type = gtk_type_unique (GTK_TYPE_CONTAINER, &list_info);
}
return list_type;
}
static void
gtk_list_class_init (GtkListClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
container_class = (GtkContainerClass*) class;
parent_class = gtk_type_class (GTK_TYPE_CONTAINER);
vadjustment_key_id = g_quark_from_static_string (vadjustment_key);
hadjustment_key_id = g_quark_from_static_string (hadjustment_key);
gobject_class->dispose = gtk_list_dispose;
object_class->set_arg = gtk_list_set_arg;
object_class->get_arg = gtk_list_get_arg;
widget_class->unmap = gtk_list_unmap;
widget_class->style_set = gtk_list_style_set;
widget_class->realize = gtk_list_realize;
widget_class->button_press_event = gtk_list_button_press;
widget_class->button_release_event = gtk_list_button_release;
widget_class->motion_notify_event = gtk_list_motion_notify;
widget_class->size_request = gtk_list_size_request;
widget_class->size_allocate = gtk_list_size_allocate;
widget_class->drag_begin = gtk_list_drag_begin;
widget_class->focus = gtk_list_focus;
container_class->add = gtk_list_add;
container_class->remove = gtk_list_remove;
container_class->forall = gtk_list_forall;
container_class->child_type = gtk_list_child_type;
container_class->set_focus_child = gtk_list_set_focus_child;
class->selection_changed = NULL;
class->select_child = gtk_real_list_select_child;
class->unselect_child = gtk_real_list_unselect_child;
list_signals[SELECTION_CHANGED] =
gtk_signal_new ("selection_changed",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkListClass, selection_changed),
gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
list_signals[SELECT_CHILD] =
gtk_signal_new ("select_child",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkListClass, select_child),
gtk_marshal_VOID__OBJECT,
GTK_TYPE_NONE, 1,
GTK_TYPE_WIDGET);
list_signals[UNSELECT_CHILD] =
gtk_signal_new ("unselect_child",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkListClass, unselect_child),
gtk_marshal_VOID__OBJECT,
GTK_TYPE_NONE, 1,
GTK_TYPE_WIDGET);
gtk_object_add_arg_type ("GtkList::selection_mode",
GTK_TYPE_SELECTION_MODE, GTK_ARG_READWRITE,
ARG_SELECTION_MODE);
}
static void
gtk_list_init (GtkList *list)
{
list->children = NULL;
list->selection = NULL;
list->undo_selection = NULL;
list->undo_unselection = NULL;
list->last_focus_child = NULL;
list->undo_focus_child = NULL;
list->htimer = 0;
list->vtimer = 0;
list->anchor = -1;
list->drag_pos = -1;
list->anchor_state = GTK_STATE_SELECTED;
list->selection_mode = GTK_SELECTION_SINGLE;
list->drag_selection = FALSE;
list->add_mode = FALSE;
}
static void
gtk_list_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id)
{
GtkList *list = GTK_LIST (object);
switch (arg_id)
{
case ARG_SELECTION_MODE:
gtk_list_set_selection_mode (list, GTK_VALUE_ENUM (*arg));
break;
}
}
static void
gtk_list_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id)
{
GtkList *list = GTK_LIST (object);
switch (arg_id)
{
case ARG_SELECTION_MODE:
GTK_VALUE_ENUM (*arg) = list->selection_mode;
break;
default:
arg->type = GTK_TYPE_INVALID;
break;
}
}
GtkWidget*
gtk_list_new (void)
{
return GTK_WIDGET (gtk_type_new (GTK_TYPE_LIST));
}
/* Private GtkObject Methods :
*
* gtk_list_dispose
*/
static void
gtk_list_dispose (GObject *object)
{
gtk_list_clear_items (GTK_LIST (object), 0, -1);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
/* Private GtkWidget Methods :
*
* gtk_list_size_request
* gtk_list_size_allocate
* gtk_list_realize
* gtk_list_unmap
* gtk_list_motion_notify
* gtk_list_button_press
* gtk_list_button_release
*/
static void
gtk_list_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkList *list;
GtkWidget *child;
GList *children;
g_return_if_fail (GTK_IS_LIST (widget));
g_return_if_fail (requisition != NULL);
list = GTK_LIST (widget);
requisition->width = 0;
requisition->height = 0;
children = list->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_VISIBLE (child))
{
GtkRequisition child_requisition;
gtk_widget_size_request (child, &child_requisition);
requisition->width = MAX (requisition->width,
child_requisition.width);
requisition->height += child_requisition.height;
}
}
requisition->width += GTK_CONTAINER (list)->border_width * 2;
requisition->height += GTK_CONTAINER (list)->border_width * 2;
requisition->width = MAX (requisition->width, 1);
requisition->height = MAX (requisition->height, 1);
}
static void
gtk_list_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkList *list;
GtkWidget *child;
GtkAllocation child_allocation;
GList *children;
g_return_if_fail (GTK_IS_LIST (widget));
g_return_if_fail (allocation != NULL);
list = GTK_LIST (widget);
widget->allocation = *allocation;
if (GTK_WIDGET_REALIZED (widget))
gdk_window_move_resize (widget->window,
allocation->x, allocation->y,
allocation->width, allocation->height);
if (list->children)
{
child_allocation.x = GTK_CONTAINER (list)->border_width;
child_allocation.y = GTK_CONTAINER (list)->border_width;
child_allocation.width = MAX (1, (gint)allocation->width -
child_allocation.x * 2);
children = list->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_VISIBLE (child))
{
GtkRequisition child_requisition;
gtk_widget_get_child_requisition (child, &child_requisition);
child_allocation.height = child_requisition.height;
gtk_widget_size_allocate (child, &child_allocation);
child_allocation.y += child_allocation.height;
}
}
}
}
static void
gtk_list_realize (GtkWidget *widget)
{
GdkWindowAttr attributes;
gint attributes_mask;
g_return_if_fail (GTK_IS_LIST (widget));
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, attributes_mask);
gdk_window_set_user_data (widget->window, widget);
widget->style = gtk_style_attach (widget->style, widget->window);
gdk_window_set_background (widget->window,
&widget->style->base[GTK_STATE_NORMAL]);
}
static void
gtk_list_unmap (GtkWidget *widget)
{
GtkList *list;
g_return_if_fail (GTK_IS_LIST (widget));
if (!GTK_WIDGET_MAPPED (widget))
return;
list = GTK_LIST (widget);
GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
if (gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (list))
{
gtk_list_end_drag_selection (list);
if (list->anchor != -1 && list->selection_mode == GTK_SELECTION_EXTENDED)
gtk_list_end_selection (list);
}
gdk_window_hide (widget->window);
}
static gint
gtk_list_motion_notify (GtkWidget *widget,
GdkEventMotion *event)
{
GtkList *list;
GtkWidget *item = NULL;
GtkAdjustment *adj;
GtkContainer *container;
GList *work;
gint x;
gint y;
gint row = -1;
gint focus_row = 0;
gint length = 0;
g_return_val_if_fail (GTK_IS_LIST (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
list = GTK_LIST (widget);
if (!list->drag_selection || !list->children)
return FALSE;
container = GTK_CONTAINER (widget);
if (event->is_hint || event->window != widget->window)
gdk_window_get_pointer (widget->window, &x, &y, NULL);
else
{
x = event->x;
y = event->y;
}
adj = gtk_object_get_data_by_id (GTK_OBJECT (list), hadjustment_key_id);
/* horizontal autoscrolling */
if (adj && widget->allocation.width > adj->page_size &&
(x < adj->value || x >= adj->value + adj->page_size))
{
if (list->htimer == 0)
{
list->htimer = gtk_timeout_add
(SCROLL_TIME, (GtkFunction) gtk_list_horizontal_timeout, widget);
if (!((x < adj->value && adj->value <= 0) ||
(x > adj->value + adj->page_size &&
adj->value >= adj->upper - adj->page_size)))
{
gdouble value;
if (x < adj->value)
value = adj->value + (x - adj->value) / 2 - 1;
else
value = adj->value + 1 + (x - adj->value - adj->page_size) / 2;
gtk_adjustment_set_value (adj,
CLAMP (value, 0.0,
adj->upper - adj->page_size));
}
}
else
return FALSE;
}
/* vertical autoscrolling */
for (work = list->children; work; length++, work = work->next)
{
if (row < 0)
{
item = GTK_WIDGET (work->data);
if (item->allocation.y > y ||
(item->allocation.y <= y &&
item->allocation.y + item->allocation.height > y))
row = length;
}
if (work->data == container->focus_child)
focus_row = length;
}
if (row < 0)
row = length - 1;
if (list->vtimer != 0)
return FALSE;
if (!((y < 0 && focus_row == 0) ||
(y > widget->allocation.height && focus_row >= length - 1)))
list->vtimer = gtk_timeout_add (SCROLL_TIME,
(GtkFunction) gtk_list_vertical_timeout,
list);
if (row != focus_row)
gtk_widget_grab_focus (item);
switch (list->selection_mode)
{
case GTK_SELECTION_BROWSE:
gtk_list_select_child (list, item);
break;
case GTK_SELECTION_EXTENDED:
gtk_list_update_extended_selection (list, row);
break;
default:
break;
}
return FALSE;
}
static gint
gtk_list_button_press (GtkWidget *widget,
GdkEventButton *event)
{
GtkList *list;
GtkWidget *item;
g_return_val_if_fail (GTK_IS_LIST (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (event->button != 1)
return FALSE;
list = GTK_LIST (widget);
item = gtk_get_event_widget ((GdkEvent*) event);
while (item && !GTK_IS_LIST_ITEM (item))
item = item->parent;
if (item && (item->parent == widget))
{
gint last_focus_row;
gint focus_row;
if (event->type == GDK_BUTTON_PRESS)
{
gtk_grab_add (widget);
list->drag_selection = TRUE;
}
else if (gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (list))
gtk_list_end_drag_selection (list);
if (!GTK_WIDGET_HAS_FOCUS(item))
gtk_widget_grab_focus (item);
if (list->add_mode)
{
list->add_mode = FALSE;
gtk_widget_queue_draw (item);
}
switch (list->selection_mode)
{
case GTK_SELECTION_SINGLE:
case GTK_SELECTION_MULTIPLE:
if (event->type != GDK_BUTTON_PRESS)
gtk_list_select_child (list, item);
else
list->undo_focus_child = item;
break;
case GTK_SELECTION_BROWSE:
break;
case GTK_SELECTION_EXTENDED:
focus_row = g_list_index (list->children, item);
if (list->last_focus_child)
last_focus_row = g_list_index (list->children,
list->last_focus_child);
else
{
last_focus_row = focus_row;
list->last_focus_child = item;
}
if (event->type != GDK_BUTTON_PRESS)
{
if (list->anchor >= 0)
{
gtk_list_update_extended_selection (list, focus_row);
gtk_list_end_selection (list);
}
gtk_list_select_child (list, item);
break;
}
if (event->state & GDK_CONTROL_MASK)
{
if (event->state & GDK_SHIFT_MASK)
{
if (list->anchor < 0)
{
g_list_free (list->undo_selection);
g_list_free (list->undo_unselection);
list->undo_selection = NULL;
list->undo_unselection = NULL;
list->anchor = last_focus_row;
list->drag_pos = last_focus_row;
list->undo_focus_child = list->last_focus_child;
}
gtk_list_update_extended_selection (list, focus_row);
}
else
{
if (list->anchor < 0)
gtk_list_set_anchor (list, TRUE,
focus_row, list->last_focus_child);
else
gtk_list_update_extended_selection (list, focus_row);
}
break;
}
if (event->state & GDK_SHIFT_MASK)
{
gtk_list_set_anchor (list, FALSE,
last_focus_row, list->last_focus_child);
gtk_list_update_extended_selection (list, focus_row);
break;
}
if (list->anchor < 0)
gtk_list_set_anchor (list, FALSE, focus_row,
list->last_focus_child);
else
gtk_list_update_extended_selection (list, focus_row);
break;
default:
break;
}
return TRUE;
}
return FALSE;
}
static gint
gtk_list_button_release (GtkWidget *widget,
GdkEventButton *event)
{
GtkList *list;
GtkWidget *item;
g_return_val_if_fail (GTK_IS_LIST (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
list = GTK_LIST (widget);
/* we don't handle button 2 and 3 */
if (event->button != 1)
return FALSE;
if (list->drag_selection)
{
gtk_list_end_drag_selection (list);
switch (list->selection_mode)
{
case GTK_SELECTION_EXTENDED:
if (!(event->state & GDK_SHIFT_MASK))
gtk_list_end_selection (list);
break;
case GTK_SELECTION_SINGLE:
case GTK_SELECTION_MULTIPLE:
item = gtk_get_event_widget ((GdkEvent*) event);
while (item && !GTK_IS_LIST_ITEM (item))
item = item->parent;
if (item && item->parent == widget)
{
if (list->undo_focus_child == item)
gtk_list_toggle_row (list, item);
}
list->undo_focus_child = NULL;
break;
default:
break;
}
return TRUE;
}
return FALSE;
}
static void
gtk_list_style_set (GtkWidget *widget,
GtkStyle *previous_style)
{
g_return_if_fail (widget != NULL);
if (previous_style && GTK_WIDGET_REALIZED (widget))
gdk_window_set_background (widget->window, &widget->style->base[GTK_WIDGET_STATE (widget)]);
}
/* GtkContainer Methods :
* gtk_list_add
* gtk_list_remove
* gtk_list_forall
* gtk_list_child_type
* gtk_list_set_focus_child
* gtk_list_focus
*/
static void
gtk_list_add (GtkContainer *container,
GtkWidget *widget)
{
GList *item_list;
g_return_if_fail (GTK_IS_LIST (container));
g_return_if_fail (GTK_IS_LIST_ITEM (widget));
item_list = g_list_alloc ();
item_list->data = widget;
gtk_list_append_items (GTK_LIST (container), item_list);
}
static void
gtk_list_remove (GtkContainer *container,
GtkWidget *widget)
{
GList *item_list;
g_return_if_fail (GTK_IS_LIST (container));
g_return_if_fail (widget != NULL);
g_return_if_fail (container == GTK_CONTAINER (widget->parent));
item_list = g_list_alloc ();
item_list->data = widget;
gtk_list_remove_items (GTK_LIST (container), item_list);
g_list_free (item_list);
}
static void
gtk_list_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
{
GtkList *list;
GtkWidget *child;
GList *children;
g_return_if_fail (GTK_IS_LIST (container));
g_return_if_fail (callback != NULL);
list = GTK_LIST (container);
children = list->children;
while (children)
{
child = children->data;
children = children->next;
(* callback) (child, callback_data);
}
}
static GtkType
gtk_list_child_type (GtkContainer *container)
{
return GTK_TYPE_LIST_ITEM;
}
static void
gtk_list_set_focus_child (GtkContainer *container,
GtkWidget *child)
{
GtkList *list;
g_return_if_fail (GTK_IS_LIST (container));
if (child)
g_return_if_fail (GTK_IS_WIDGET (child));
list = GTK_LIST (container);
if (child != container->focus_child)
{
if (container->focus_child)
{
list->last_focus_child = container->focus_child;
gtk_widget_unref (container->focus_child);
}
container->focus_child = child;
if (container->focus_child)
gtk_widget_ref (container->focus_child);
}
/* check for v adjustment */
if (container->focus_child)
{
GtkAdjustment *adjustment;
adjustment = gtk_object_get_data_by_id (GTK_OBJECT (container),
vadjustment_key_id);
if (adjustment)
gtk_adjustment_clamp_page (adjustment,
container->focus_child->allocation.y,
(container->focus_child->allocation.y +
container->focus_child->allocation.height));
switch (list->selection_mode)
{
case GTK_SELECTION_BROWSE:
gtk_list_select_child (list, child);
break;
case GTK_SELECTION_EXTENDED:
if (!list->last_focus_child && !list->add_mode)
{
list->undo_focus_child = list->last_focus_child;
gtk_list_unselect_all (list);
gtk_list_select_child (list, child);
}
break;
default:
break;
}
}
}
static gboolean
gtk_list_focus (GtkWidget *widget,
GtkDirectionType direction)
{
gint return_val = FALSE;
GtkContainer *container;
container = GTK_CONTAINER (widget);
if (container->focus_child == NULL ||
!GTK_WIDGET_HAS_FOCUS (container->focus_child))
{
if (GTK_LIST (container)->last_focus_child)
gtk_container_set_focus_child
(container, GTK_LIST (container)->last_focus_child);
if (GTK_WIDGET_CLASS (parent_class)->focus)
return_val = GTK_WIDGET_CLASS (parent_class)->focus (widget,
direction);
}
if (!return_val)
{
GtkList *list;
list = GTK_LIST (container);
if (list->selection_mode == GTK_SELECTION_EXTENDED && list->anchor >= 0)
gtk_list_end_selection (list);
if (container->focus_child)
list->last_focus_child = container->focus_child;
}
return return_val;
}
/* Public GtkList Methods :
*
* gtk_list_insert_items
* gtk_list_append_items
* gtk_list_prepend_items
* gtk_list_remove_items
* gtk_list_remove_items_no_unref
* gtk_list_clear_items
*
* gtk_list_child_position
*/
void
gtk_list_insert_items (GtkList *list,
GList *items,
gint position)
{
GtkWidget *widget;
GList *tmp_list;
GList *last;
gint nchildren;
g_return_if_fail (GTK_IS_LIST (list));
if (!items)
return;
gtk_list_end_drag_selection (list);
if (list->selection_mode == GTK_SELECTION_EXTENDED && list->anchor >= 0)
gtk_list_end_selection (list);
tmp_list = items;
while (tmp_list)
{
widget = tmp_list->data;
tmp_list = tmp_list->next;
gtk_widget_set_parent (widget, GTK_WIDGET (list));
gtk_signal_connect (GTK_OBJECT (widget), "drag_begin",
GTK_SIGNAL_FUNC (gtk_list_signal_drag_begin),
list);
gtk_signal_connect (GTK_OBJECT (widget), "toggle_focus_row",
GTK_SIGNAL_FUNC (gtk_list_signal_toggle_focus_row),
list);
gtk_signal_connect (GTK_OBJECT (widget), "select_all",
GTK_SIGNAL_FUNC (gtk_list_signal_select_all),
list);
gtk_signal_connect (GTK_OBJECT (widget), "unselect_all",
GTK_SIGNAL_FUNC (gtk_list_signal_unselect_all),
list);
gtk_signal_connect (GTK_OBJECT (widget), "undo_selection",
GTK_SIGNAL_FUNC (gtk_list_signal_undo_selection),
list);
gtk_signal_connect (GTK_OBJECT (widget), "start_selection",
GTK_SIGNAL_FUNC (gtk_list_signal_start_selection),
list);
gtk_signal_connect (GTK_OBJECT (widget), "end_selection",
GTK_SIGNAL_FUNC (gtk_list_signal_end_selection),
list);
gtk_signal_connect (GTK_OBJECT (widget), "extend_selection",
GTK_SIGNAL_FUNC (gtk_list_signal_extend_selection),
list);
gtk_signal_connect (GTK_OBJECT (widget), "scroll_horizontal",
GTK_SIGNAL_FUNC (gtk_list_signal_scroll_horizontal),
list);
gtk_signal_connect (GTK_OBJECT (widget), "scroll_vertical",
GTK_SIGNAL_FUNC (gtk_list_signal_scroll_vertical),
list);
gtk_signal_connect (GTK_OBJECT (widget), "toggle_add_mode",
GTK_SIGNAL_FUNC (gtk_list_signal_toggle_add_mode),
list);
gtk_signal_connect (GTK_OBJECT (widget), "select",
GTK_SIGNAL_FUNC (gtk_list_signal_item_select),
list);
gtk_signal_connect (GTK_OBJECT (widget), "deselect",
GTK_SIGNAL_FUNC (gtk_list_signal_item_deselect),
list);
gtk_signal_connect (GTK_OBJECT (widget), "toggle",
GTK_SIGNAL_FUNC (gtk_list_signal_item_toggle),
list);
}
nchildren = g_list_length (list->children);
if ((position < 0) || (position > nchildren))
position = nchildren;
if (position == nchildren)
{
if (list->children)
{
tmp_list = g_list_last (list->children);
tmp_list->next = items;
items->prev = tmp_list;
}
else
{
list->children = items;
}
}
else
{
tmp_list = g_list_nth (list->children, position);
last = g_list_last (items);
if (tmp_list->prev)
tmp_list->prev->next = items;
last->next = tmp_list;
items->prev = tmp_list->prev;
tmp_list->prev = last;
if (tmp_list == list->children)
list->children = items;
}
if (list->children && !list->selection &&
(list->selection_mode == GTK_SELECTION_BROWSE))
{
widget = list->children->data;
gtk_list_select_child (list, widget);
}
}
void
gtk_list_append_items (GtkList *list,
GList *items)
{
g_return_if_fail (GTK_IS_LIST (list));
gtk_list_insert_items (list, items, -1);
}
void
gtk_list_prepend_items (GtkList *list,
GList *items)
{
g_return_if_fail (GTK_IS_LIST (list));
gtk_list_insert_items (list, items, 0);
}
void
gtk_list_remove_items (GtkList *list,
GList *items)
{
gtk_list_remove_items_internal (list, items, FALSE);
}
void
gtk_list_remove_items_no_unref (GtkList *list,
GList *items)
{
gtk_list_remove_items_internal (list, items, TRUE);
}
void
gtk_list_clear_items (GtkList *list,
gint start,
gint end)
{
GtkContainer *container;
GtkWidget *widget;
GtkWidget *new_focus_child = NULL;
GList *start_list;
GList *end_list;
GList *tmp_list;
guint nchildren;
gboolean grab_focus = FALSE;
g_return_if_fail (GTK_IS_LIST (list));
nchildren = g_list_length (list->children);
if (nchildren == 0)
return;
if ((end < 0) || (end > nchildren))
end = nchildren;
if (start >= end)
return;
container = GTK_CONTAINER (list);
gtk_list_end_drag_selection (list);
if (list->selection_mode == GTK_SELECTION_EXTENDED)
{
if (list->anchor >= 0)
gtk_list_end_selection (list);
gtk_list_reset_extended_selection (list);
}
start_list = g_list_nth (list->children, start);
end_list = g_list_nth (list->children, end);
if (start_list->prev)
start_list->prev->next = end_list;
if (end_list && end_list->prev)
end_list->prev->next = NULL;
if (end_list)
end_list->prev = start_list->prev;
if (start_list == list->children)
list->children = end_list;
if (container->focus_child)
{
if (g_list_find (start_list, container->focus_child))
{
if (start_list->prev)
new_focus_child = start_list->prev->data;
else if (list->children)
new_focus_child = list->children->prev->data;
if (GTK_WIDGET_HAS_FOCUS (container->focus_child))
grab_focus = TRUE;
}
}
tmp_list = start_list;
while (tmp_list)
{
widget = tmp_list->data;
tmp_list = tmp_list->next;
if (widget->state == GTK_STATE_SELECTED)
gtk_list_unselect_child (list, widget);
if (widget == list->undo_focus_child)
list->undo_focus_child = NULL;
if (widget == list->last_focus_child)
list->last_focus_child = NULL;
gtk_signal_disconnect_by_data (GTK_OBJECT (widget), (gpointer) list);
gtk_widget_unparent (widget);
}
g_list_free (start_list);
if (new_focus_child)
{
if (grab_focus)
gtk_widget_grab_focus (new_focus_child);
else if (container->focus_child)
gtk_container_set_focus_child (container, new_focus_child);
if ((list->selection_mode == GTK_SELECTION_BROWSE ||
list->selection_mode == GTK_SELECTION_EXTENDED) && !list->selection)
{
list->last_focus_child = new_focus_child;
gtk_list_select_child (list, new_focus_child);
}
}
if (GTK_WIDGET_VISIBLE (list))
gtk_widget_queue_resize (GTK_WIDGET (list));
}
gint
gtk_list_child_position (GtkList *list,
GtkWidget *child)
{
GList *children;
gint pos;
g_return_val_if_fail (GTK_IS_LIST (list), -1);
g_return_val_if_fail (child != NULL, -1);
pos = 0;
children = list->children;
while (children)
{
if (child == GTK_WIDGET (children->data))
return pos;
pos += 1;
children = children->next;
}
return -1;
}
/* Private GtkList Insert/Remove Item Functions:
*
* gtk_list_remove_items_internal
*/
static void
gtk_list_remove_items_internal (GtkList *list,
GList *items,
gboolean no_unref)
{
GtkWidget *widget;
GtkWidget *new_focus_child;
GtkWidget *old_focus_child;
GtkContainer *container;
GList *tmp_list;
GList *work;
gboolean grab_focus = FALSE;
g_return_if_fail (GTK_IS_LIST (list));
if (!items)
return;
container = GTK_CONTAINER (list);
gtk_list_end_drag_selection (list);
if (list->selection_mode == GTK_SELECTION_EXTENDED)
{
if (list->anchor >= 0)
gtk_list_end_selection (list);
gtk_list_reset_extended_selection (list);
}
tmp_list = items;
while (tmp_list)
{
widget = tmp_list->data;
tmp_list = tmp_list->next;
if (widget->state == GTK_STATE_SELECTED)
gtk_list_unselect_child (list, widget);
}
if (container->focus_child)
{
old_focus_child = new_focus_child = container->focus_child;
if (GTK_WIDGET_HAS_FOCUS (container->focus_child))
grab_focus = TRUE;
}
else
old_focus_child = new_focus_child = list->last_focus_child;
tmp_list = items;
while (tmp_list)
{
widget = tmp_list->data;
tmp_list = tmp_list->next;
if (no_unref)
gtk_widget_ref (widget);
if (widget == new_focus_child)
{
work = g_list_find (list->children, widget);
if (work)
{
if (work->next)
new_focus_child = work->next->data;
else if (list->children != work && work->prev)
new_focus_child = work->prev->data;
else
new_focus_child = NULL;
}
}
if (widget == list->undo_focus_child)
list->undo_focus_child = NULL;
if (widget == list->last_focus_child)
list->last_focus_child = NULL;
gtk_signal_disconnect_by_data (GTK_OBJECT (widget), (gpointer) list);
list->children = g_list_remove (list->children, widget);
gtk_widget_unparent (widget);
}
if (new_focus_child && new_focus_child != old_focus_child)
{
if (grab_focus)
gtk_widget_grab_focus (new_focus_child);
else if (container->focus_child)
gtk_container_set_focus_child (container, new_focus_child);
if (list->selection_mode == GTK_SELECTION_BROWSE && !list->selection)
{
list->last_focus_child = new_focus_child;
gtk_list_select_child (list, new_focus_child);
}
}
if (GTK_WIDGET_VISIBLE (list))
gtk_widget_queue_resize (GTK_WIDGET (list));
}
/* Public GtkList Selection Methods :
*
* gtk_list_set_selection_mode
* gtk_list_select_item
* gtk_list_unselect_item
* gtk_list_select_child
* gtk_list_unselect_child
* gtk_list_select_all
* gtk_list_unselect_all
* gtk_list_extend_selection
* gtk_list_end_drag_selection
* gtk_list_start_selection
* gtk_list_end_selection
* gtk_list_toggle_row
* gtk_list_toggle_focus_row
* gtk_list_toggle_add_mode
* gtk_list_undo_selection
*/
void
gtk_list_set_selection_mode (GtkList *list,
GtkSelectionMode mode)
{
g_return_if_fail (GTK_IS_LIST (list));
if (list->selection_mode == mode)
return;
list->selection_mode = mode;
switch (mode)
{
case GTK_SELECTION_SINGLE:
case GTK_SELECTION_BROWSE:
gtk_list_unselect_all (list);
break;
default:
break;
}
}
void
gtk_list_select_item (GtkList *list,
gint item)
{
GList *tmp_list;
g_return_if_fail (GTK_IS_LIST (list));
tmp_list = g_list_nth (list->children, item);
if (tmp_list)
gtk_list_select_child (list, GTK_WIDGET (tmp_list->data));
}
void
gtk_list_unselect_item (GtkList *list,
gint item)
{
GList *tmp_list;
g_return_if_fail (GTK_IS_LIST (list));
tmp_list = g_list_nth (list->children, item);
if (tmp_list)
gtk_list_unselect_child (list, GTK_WIDGET (tmp_list->data));
}
void
gtk_list_select_child (GtkList *list,
GtkWidget *child)
{
gtk_signal_emit (GTK_OBJECT (list), list_signals[SELECT_CHILD], child);
}
void
gtk_list_unselect_child (GtkList *list,
GtkWidget *child)
{
gtk_signal_emit (GTK_OBJECT (list), list_signals[UNSELECT_CHILD], child);
}
void
gtk_list_select_all (GtkList *list)
{
GtkContainer *container;
GList *work;
g_return_if_fail (GTK_IS_LIST (list));
if (!list->children)
return;
if (gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (list))
gtk_list_end_drag_selection (list);
if (list->selection_mode == GTK_SELECTION_EXTENDED && list->anchor >= 0)
gtk_list_end_selection (list);
container = GTK_CONTAINER (list);
switch (list->selection_mode)
{
case GTK_SELECTION_BROWSE:
if (container->focus_child)
{
gtk_list_select_child (list, container->focus_child);
return;
}
break;
case GTK_SELECTION_EXTENDED:
g_list_free (list->undo_selection);
g_list_free (list->undo_unselection);
list->undo_selection = NULL;
list->undo_unselection = NULL;
if (list->children &&
GTK_WIDGET_STATE (list->children->data) != GTK_STATE_SELECTED)
gtk_list_fake_toggle_row (list, GTK_WIDGET (list->children->data));
list->anchor_state = GTK_STATE_SELECTED;
list->anchor = 0;
list->drag_pos = 0;
list->undo_focus_child = container->focus_child;
gtk_list_update_extended_selection (list, g_list_length(list->children));
gtk_list_end_selection (list);
return;
case GTK_SELECTION_MULTIPLE:
for (work = list->children; work; work = work->next)
{
if (GTK_WIDGET_STATE (work->data) == GTK_STATE_NORMAL)
gtk_list_select_child (list, GTK_WIDGET (work->data));
}
return;
default:
break;
}
}
void
gtk_list_unselect_all (GtkList *list)
{
GtkContainer *container;
GtkWidget *item;
GList *work;
g_return_if_fail (GTK_IS_LIST (list));
if (!list->children)
return;
if (gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (list))
gtk_list_end_drag_selection (list);
if (list->selection_mode == GTK_SELECTION_EXTENDED && list->anchor >= 0)
gtk_list_end_selection (list);
container = GTK_CONTAINER (list);
switch (list->selection_mode)
{
case GTK_SELECTION_BROWSE:
if (container->focus_child)
{
gtk_list_select_child (list, container->focus_child);
return;
}
break;
case GTK_SELECTION_EXTENDED:
gtk_list_reset_extended_selection (list);
break;
default:
break;
}
work = list->selection;
while (work)
{
item = work->data;
work = work->next;
gtk_list_unselect_child (list, item);
}
}
void
gtk_list_extend_selection (GtkList *list,
GtkScrollType scroll_type,
gfloat position,
gboolean auto_start_selection)
{
GtkContainer *container;
g_return_if_fail (GTK_IS_LIST (list));
if ((gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (list)) ||
list->selection_mode != GTK_SELECTION_EXTENDED)
return;
container = GTK_CONTAINER (list);
if (auto_start_selection)
{
gint focus_row;
focus_row = g_list_index (list->children, container->focus_child);
gtk_list_set_anchor (list, list->add_mode, focus_row,
container->focus_child);
}
else if (list->anchor < 0)
return;
gtk_list_move_focus_child (list, scroll_type, position);
gtk_list_update_extended_selection
(list, g_list_index (list->children, container->focus_child));
}
void
gtk_list_end_drag_selection (GtkList *list)
{
g_return_if_fail (GTK_IS_LIST (list));
list->drag_selection = FALSE;
if (GTK_WIDGET_HAS_GRAB (list))
gtk_grab_remove (GTK_WIDGET (list));
if (list->htimer)
{
gtk_timeout_remove (list->htimer);
list->htimer = 0;
}
if (list->vtimer)
{
gtk_timeout_remove (list->vtimer);
list->vtimer = 0;
}
}
void
gtk_list_start_selection (GtkList *list)
{
GtkContainer *container;
gint focus_row;
g_return_if_fail (GTK_IS_LIST (list));
if (gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (list))
return;
container = GTK_CONTAINER (list);
if ((focus_row = g_list_index (list->selection, container->focus_child))
>= 0)
gtk_list_set_anchor (list, list->add_mode,
focus_row, container->focus_child);
}
void
gtk_list_end_selection (GtkList *list)
{
gint i;
gint e;
gboolean top_down;
GList *work;
GtkWidget *item;
gint item_index;
g_return_if_fail (GTK_IS_LIST (list));
if ((gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (list)) ||
list->anchor < 0)
return;
i = MIN (list->anchor, list->drag_pos);
e = MAX (list->anchor, list->drag_pos);
top_down = (list->anchor < list->drag_pos);
list->anchor = -1;
list->drag_pos = -1;
if (list->undo_selection)
{
work = list->selection;
list->selection = list->undo_selection;
list->undo_selection = work;
work = list->selection;
while (work)
{
item = work->data;
work = work->next;
item_index = g_list_index (list->children, item);
if (item_index < i || item_index > e)
{
gtk_widget_set_state (item, GTK_STATE_SELECTED);
gtk_list_unselect_child (list, item);
list->undo_selection = g_list_prepend (list->undo_selection,
item);
}
}
}
if (top_down)
{
for (work = g_list_nth (list->children, i); i <= e;
i++, work = work->next)
{
item = work->data;
if (g_list_find (list->selection, item))
{
if (item->state == GTK_STATE_NORMAL)
{
gtk_widget_set_state (item, GTK_STATE_SELECTED);
gtk_list_unselect_child (list, item);
list->undo_selection = g_list_prepend (list->undo_selection,
item);
}
}
else if (item->state == GTK_STATE_SELECTED)
{
gtk_widget_set_state (item, GTK_STATE_NORMAL);
list->undo_unselection = g_list_prepend (list->undo_unselection,
item);
}
}
}
else
{
for (work = g_list_nth (list->children, e); i <= e;
e--, work = work->prev)
{
item = work->data;
if (g_list_find (list->selection, item))
{
if (item->state == GTK_STATE_NORMAL)
{
gtk_widget_set_state (item, GTK_STATE_SELECTED);
gtk_list_unselect_child (list, item);
list->undo_selection = g_list_prepend (list->undo_selection,
item);
}
}
else if (item->state == GTK_STATE_SELECTED)
{
gtk_widget_set_state (item, GTK_STATE_NORMAL);
list->undo_unselection = g_list_prepend (list->undo_unselection,
item);
}
}
}
for (work = g_list_reverse (list->undo_unselection); work; work = work->next)
gtk_list_select_child (list, GTK_WIDGET (work->data));
}
void
gtk_list_toggle_row (GtkList *list,
GtkWidget *item)
{
g_return_if_fail (GTK_IS_LIST (list));
g_return_if_fail (GTK_IS_LIST_ITEM (item));
switch (list->selection_mode)
{
case GTK_SELECTION_EXTENDED:
case GTK_SELECTION_MULTIPLE:
case GTK_SELECTION_SINGLE:
if (item->state == GTK_STATE_SELECTED)
{
gtk_list_unselect_child (list, item);
return;
}
case GTK_SELECTION_BROWSE:
gtk_list_select_child (list, item);
break;
}
}
void
gtk_list_toggle_focus_row (GtkList *list)
{
GtkContainer *container;
gint focus_row;
g_return_if_fail (list != 0);
g_return_if_fail (GTK_IS_LIST (list));
container = GTK_CONTAINER (list);
if ((gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (list)) ||
!container->focus_child)
return;
switch (list->selection_mode)
{
case GTK_SELECTION_SINGLE:
case GTK_SELECTION_MULTIPLE:
gtk_list_toggle_row (list, container->focus_child);
break;
case GTK_SELECTION_EXTENDED:
if ((focus_row = g_list_index (list->children, container->focus_child))
< 0)
return;
g_list_free (list->undo_selection);
g_list_free (list->undo_unselection);
list->undo_selection = NULL;
list->undo_unselection = NULL;
list->anchor = focus_row;
list->drag_pos = focus_row;
list->undo_focus_child = container->focus_child;
if (list->add_mode)
gtk_list_fake_toggle_row (list, container->focus_child);
else
gtk_list_fake_unselect_all (list, container->focus_child);
gtk_list_end_selection (list);
break;
default:
break;
}
}
void
gtk_list_toggle_add_mode (GtkList *list)
{
GtkContainer *container;
g_return_if_fail (list != 0);
g_return_if_fail (GTK_IS_LIST (list));
if ((gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (list)) ||
list->selection_mode != GTK_SELECTION_EXTENDED)
return;
container = GTK_CONTAINER (list);
if (list->add_mode)
{
list->add_mode = FALSE;
list->anchor_state = GTK_STATE_SELECTED;
}
else
list->add_mode = TRUE;
if (container->focus_child)
gtk_widget_queue_draw (container->focus_child);
}
void
gtk_list_undo_selection (GtkList *list)
{
GList *work;
g_return_if_fail (GTK_IS_LIST (list));
if (list->selection_mode != GTK_SELECTION_EXTENDED ||
(gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (list)))
return;
if (list->anchor >= 0)
gtk_list_end_selection (list);
if (!(list->undo_selection || list->undo_unselection))
{
gtk_list_unselect_all (list);
return;
}
for (work = list->undo_selection; work; work = work->next)
gtk_list_select_child (list, GTK_WIDGET (work->data));
for (work = list->undo_unselection; work; work = work->next)
gtk_list_unselect_child (list, GTK_WIDGET (work->data));
if (list->undo_focus_child)
{
GtkContainer *container;
container = GTK_CONTAINER (list);
if (container->focus_child &&
GTK_WIDGET_HAS_FOCUS (container->focus_child))
gtk_widget_grab_focus (list->undo_focus_child);
else
gtk_container_set_focus_child (container, list->undo_focus_child);
}
list->undo_focus_child = NULL;
g_list_free (list->undo_selection);
g_list_free (list->undo_unselection);
list->undo_selection = NULL;
list->undo_unselection = NULL;
}
/* Private GtkList Selection Methods :
*
* gtk_real_list_select_child
* gtk_real_list_unselect_child
*/
static void
gtk_real_list_select_child (GtkList *list,
GtkWidget *child)
{
g_return_if_fail (GTK_IS_LIST (list));
g_return_if_fail (GTK_IS_LIST_ITEM (child));
switch (child->state)
{
case GTK_STATE_SELECTED:
case GTK_STATE_INSENSITIVE:
break;
default:
gtk_list_item_select (GTK_LIST_ITEM (child));
break;
}
}
static void
gtk_real_list_unselect_child (GtkList *list,
GtkWidget *child)
{
g_return_if_fail (GTK_IS_LIST (list));
g_return_if_fail (GTK_IS_LIST_ITEM (child));
if (child->state == GTK_STATE_SELECTED)
gtk_list_item_deselect (GTK_LIST_ITEM (child));
}
/* Private GtkList Selection Functions :
*
* gtk_list_set_anchor
* gtk_list_fake_unselect_all
* gtk_list_fake_toggle_row
* gtk_list_update_extended_selection
* gtk_list_reset_extended_selection
*/
static void
gtk_list_set_anchor (GtkList *list,
gboolean add_mode,
gint anchor,
GtkWidget *undo_focus_child)
{
GList *work;
g_return_if_fail (GTK_IS_LIST (list));
if (list->selection_mode != GTK_SELECTION_EXTENDED || list->anchor >= 0)
return;
g_list_free (list->undo_selection);
g_list_free (list->undo_unselection);
list->undo_selection = NULL;
list->undo_unselection = NULL;
if ((work = g_list_nth (list->children, anchor)))
{
if (add_mode)
gtk_list_fake_toggle_row (list, GTK_WIDGET (work->data));
else
{
gtk_list_fake_unselect_all (list, GTK_WIDGET (work->data));
list->anchor_state = GTK_STATE_SELECTED;
}
}
list->anchor = anchor;
list->drag_pos = anchor;
list->undo_focus_child = undo_focus_child;
}
static void
gtk_list_fake_unselect_all (GtkList *list,
GtkWidget *item)
{
GList *work;
if (item && item->state == GTK_STATE_NORMAL)
gtk_widget_set_state (item, GTK_STATE_SELECTED);
list->undo_selection = list->selection;
list->selection = NULL;
for (work = list->undo_selection; work; work = work->next)
if (work->data != item)
gtk_widget_set_state (GTK_WIDGET (work->data), GTK_STATE_NORMAL);
}
static void
gtk_list_fake_toggle_row (GtkList *list,
GtkWidget *item)
{
if (!item)
return;
if (item->state == GTK_STATE_NORMAL)
{
list->anchor_state = GTK_STATE_SELECTED;
gtk_widget_set_state (item, GTK_STATE_SELECTED);
}
else
{
list->anchor_state = GTK_STATE_NORMAL;
gtk_widget_set_state (item, GTK_STATE_NORMAL);
}
}
static void
gtk_list_update_extended_selection (GtkList *list,
gint row)
{
gint i;
GList *work;
gint s1 = -1;
gint s2 = -1;
gint e1 = -1;
gint e2 = -1;
gint length;
if (row < 0)
row = 0;
length = g_list_length (list->children);
if (row >= length)
row = length - 1;
if (list->selection_mode != GTK_SELECTION_EXTENDED || !list->anchor < 0)
return;
/* extending downwards */
if (row > list->drag_pos && list->anchor <= list->drag_pos)
{
s2 = list->drag_pos + 1;
e2 = row;
}
/* extending upwards */
else if (row < list->drag_pos && list->anchor >= list->drag_pos)
{
s2 = row;
e2 = list->drag_pos - 1;
}
else if (row < list->drag_pos && list->anchor < list->drag_pos)
{
e1 = list->drag_pos;
/* row and drag_pos on different sides of anchor :
take back the selection between anchor and drag_pos,
select between anchor and row */
if (row < list->anchor)
{
s1 = list->anchor + 1;
s2 = row;
e2 = list->anchor - 1;
}
/* take back the selection between anchor and drag_pos */
else
s1 = row + 1;
}
else if (row > list->drag_pos && list->anchor > list->drag_pos)
{
s1 = list->drag_pos;
/* row and drag_pos on different sides of anchor :
take back the selection between anchor and drag_pos,
select between anchor and row */
if (row > list->anchor)
{
e1 = list->anchor - 1;
s2 = list->anchor + 1;
e2 = row;
}
/* take back the selection between anchor and drag_pos */
else
e1 = row - 1;
}
list->drag_pos = row;
/* restore the elements between s1 and e1 */
if (s1 >= 0)
{
for (i = s1, work = g_list_nth (list->children, i); i <= e1;
i++, work = work->next)
{
if (g_list_find (list->selection, work->data))
gtk_widget_set_state (GTK_WIDGET (work->data), GTK_STATE_SELECTED);
else
gtk_widget_set_state (GTK_WIDGET (work->data), GTK_STATE_NORMAL);
}
}
/* extend the selection between s2 and e2 */
if (s2 >= 0)
{
for (i = s2, work = g_list_nth (list->children, i); i <= e2;
i++, work = work->next)
if (GTK_WIDGET (work->data)->state != list->anchor_state)
gtk_widget_set_state (GTK_WIDGET (work->data), list->anchor_state);
}
}
static void
gtk_list_reset_extended_selection (GtkList *list)
{
g_return_if_fail (list != 0);
g_return_if_fail (GTK_IS_LIST (list));
g_list_free (list->undo_selection);
g_list_free (list->undo_unselection);
list->undo_selection = NULL;
list->undo_unselection = NULL;
list->anchor = -1;
list->drag_pos = -1;
list->undo_focus_child = GTK_CONTAINER (list)->focus_child;
}
/* Public GtkList Scroll Methods :
*
* gtk_list_scroll_horizontal
* gtk_list_scroll_vertical
*/
void
gtk_list_scroll_horizontal (GtkList *list,
GtkScrollType scroll_type,
gfloat position)
{
GtkAdjustment *adj;
g_return_if_fail (list != 0);
g_return_if_fail (GTK_IS_LIST (list));
if (gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (list))
return;
if (!(adj =
gtk_object_get_data_by_id (GTK_OBJECT (list), hadjustment_key_id)))
return;
switch (scroll_type)
{
case GTK_SCROLL_STEP_UP:
case GTK_SCROLL_STEP_BACKWARD:
adj->value = CLAMP (adj->value - adj->step_increment, adj->lower,
adj->upper - adj->page_size);
break;
case GTK_SCROLL_STEP_DOWN:
case GTK_SCROLL_STEP_FORWARD:
adj->value = CLAMP (adj->value + adj->step_increment, adj->lower,
adj->upper - adj->page_size);
break;
case GTK_SCROLL_PAGE_UP:
case GTK_SCROLL_PAGE_BACKWARD:
adj->value = CLAMP (adj->value - adj->page_increment, adj->lower,
adj->upper - adj->page_size);
break;
case GTK_SCROLL_PAGE_DOWN:
case GTK_SCROLL_PAGE_FORWARD:
adj->value = CLAMP (adj->value + adj->page_increment, adj->lower,
adj->upper - adj->page_size);
break;
case GTK_SCROLL_JUMP:
adj->value = CLAMP (adj->lower + (adj->upper - adj->lower) * position,
adj->lower, adj->upper - adj->page_size);
break;
default:
break;
}
gtk_adjustment_value_changed (adj);
}
void
gtk_list_scroll_vertical (GtkList *list,
GtkScrollType scroll_type,
gfloat position)
{
g_return_if_fail (GTK_IS_LIST (list));
if (gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (list))
return;
if (list->selection_mode == GTK_SELECTION_EXTENDED)
{
GtkContainer *container;
if (list->anchor >= 0)
return;
container = GTK_CONTAINER (list);
list->undo_focus_child = container->focus_child;
gtk_list_move_focus_child (list, scroll_type, position);
if (container->focus_child != list->undo_focus_child && !list->add_mode)
{
gtk_list_unselect_all (list);
gtk_list_select_child (list, container->focus_child);
}
}
else
gtk_list_move_focus_child (list, scroll_type, position);
}
/* Private GtkList Scroll/Focus Functions :
*
* gtk_list_move_focus_child
* gtk_list_horizontal_timeout
* gtk_list_vertical_timeout
*/
static void
gtk_list_move_focus_child (GtkList *list,
GtkScrollType scroll_type,
gfloat position)
{
GtkContainer *container;
GList *work;
GtkWidget *item;
GtkAdjustment *adj;
gint new_value;
g_return_if_fail (list != 0);
g_return_if_fail (GTK_IS_LIST (list));
container = GTK_CONTAINER (list);
if (container->focus_child)
work = g_list_find (list->children, container->focus_child);
else
work = list->children;
if (!work)
return;
switch (scroll_type)
{
case GTK_SCROLL_STEP_BACKWARD:
work = work->prev;
if (work)
gtk_widget_grab_focus (GTK_WIDGET (work->data));
break;
case GTK_SCROLL_STEP_FORWARD:
work = work->next;
if (work)
gtk_widget_grab_focus (GTK_WIDGET (work->data));
break;
case GTK_SCROLL_PAGE_BACKWARD:
if (!work->prev)
return;
item = work->data;
adj = gtk_object_get_data_by_id (GTK_OBJECT (list), vadjustment_key_id);
if (adj)
{
gboolean correct = FALSE;
new_value = adj->value;
if (item->allocation.y <= adj->value)
{
new_value = MAX (item->allocation.y + item->allocation.height
- adj->page_size, adj->lower);
correct = TRUE;
}
if (item->allocation.y > new_value)
for (; work; work = work->prev)
{
item = GTK_WIDGET (work->data);
if (item->allocation.y <= new_value &&
item->allocation.y + item->allocation.height > new_value)
break;
}
else
for (; work; work = work->next)
{
item = GTK_WIDGET (work->data);
if (item->allocation.y <= new_value &&
item->allocation.y + item->allocation.height > new_value)
break;
}
if (correct && work && work->next && item->allocation.y < new_value)
item = work->next->data;
}
else
item = list->children->data;
gtk_widget_grab_focus (item);
break;
case GTK_SCROLL_PAGE_FORWARD:
if (!work->next)
return;
item = work->data;
adj = gtk_object_get_data_by_id (GTK_OBJECT (list), vadjustment_key_id);
if (adj)
{
gboolean correct = FALSE;
new_value = adj->value;
if (item->allocation.y + item->allocation.height >=
adj->value + adj->page_size)
{
new_value = item->allocation.y;
correct = TRUE;
}
new_value = MIN (new_value + adj->page_size, adj->upper);
if (item->allocation.y > new_value)
for (; work; work = work->prev)
{
item = GTK_WIDGET (work->data);
if (item->allocation.y <= new_value &&
item->allocation.y + item->allocation.height > new_value)
break;
}
else
for (; work; work = work->next)
{
item = GTK_WIDGET (work->data);
if (item->allocation.y <= new_value &&
item->allocation.y + item->allocation.height > new_value)
break;
}
if (correct && work && work->prev &&
item->allocation.y + item->allocation.height - 1 > new_value)
item = work->prev->data;
}
else
item = g_list_last (work)->data;
gtk_widget_grab_focus (item);
break;
case GTK_SCROLL_JUMP:
new_value = GTK_WIDGET(list)->allocation.height * CLAMP (position, 0, 1);
for (item = NULL, work = list->children; work; work =work->next)
{
item = GTK_WIDGET (work->data);
if (item->allocation.y <= new_value &&
item->allocation.y + item->allocation.height > new_value)
break;
}
gtk_widget_grab_focus (item);
break;
default:
break;
}
}
static gint
gtk_list_horizontal_timeout (GtkWidget *list)
{
GdkEventMotion event;
memset (&event, 0, sizeof (event));
GDK_THREADS_ENTER ();
GTK_LIST (list)->htimer = 0;
event.type = GDK_MOTION_NOTIFY;
event.send_event = TRUE;
gtk_list_motion_notify (list, &event);
GDK_THREADS_LEAVE ();
return FALSE;
}
static gint
gtk_list_vertical_timeout (GtkWidget *list)
{
GdkEventMotion event;
memset (&event, 0, sizeof (event));
GDK_THREADS_ENTER ();
GTK_LIST (list)->vtimer = 0;
event.type = GDK_MOTION_NOTIFY;
event.send_event = TRUE;
gtk_list_motion_notify (list, &event);
GDK_THREADS_LEAVE ();
return FALSE;
}
/* Private GtkListItem Signal Functions :
*
* gtk_list_signal_toggle_focus_row
* gtk_list_signal_select_all
* gtk_list_signal_unselect_all
* gtk_list_signal_undo_selection
* gtk_list_signal_start_selection
* gtk_list_signal_end_selection
* gtk_list_signal_extend_selection
* gtk_list_signal_scroll_horizontal
* gtk_list_signal_scroll_vertical
* gtk_list_signal_toggle_add_mode
* gtk_list_signal_item_select
* gtk_list_signal_item_deselect
* gtk_list_signal_item_toggle
*/
static void
gtk_list_signal_toggle_focus_row (GtkListItem *list_item,
GtkList *list)
{
g_return_if_fail (GTK_IS_LIST_ITEM (list_item));
g_return_if_fail (GTK_IS_LIST (list));
gtk_list_toggle_focus_row (list);
}
static void
gtk_list_signal_select_all (GtkListItem *list_item,
GtkList *list)
{
g_return_if_fail (GTK_IS_LIST_ITEM (list_item));
g_return_if_fail (GTK_IS_LIST (list));
gtk_list_select_all (list);
}
static void
gtk_list_signal_unselect_all (GtkListItem *list_item,
GtkList *list)
{
g_return_if_fail (GTK_IS_LIST_ITEM (list_item));
g_return_if_fail (GTK_IS_LIST (list));
gtk_list_unselect_all (list);
}
static void
gtk_list_signal_undo_selection (GtkListItem *list_item,
GtkList *list)
{
g_return_if_fail (GTK_IS_LIST_ITEM (list_item));
g_return_if_fail (GTK_IS_LIST (list));
gtk_list_undo_selection (list);
}
static void
gtk_list_signal_start_selection (GtkListItem *list_item,
GtkList *list)
{
g_return_if_fail (GTK_IS_LIST_ITEM (list_item));
g_return_if_fail (GTK_IS_LIST (list));
gtk_list_start_selection (list);
}
static void
gtk_list_signal_end_selection (GtkListItem *list_item,
GtkList *list)
{
g_return_if_fail (GTK_IS_LIST_ITEM (list_item));
g_return_if_fail (GTK_IS_LIST (list));
gtk_list_end_selection (list);
}
static void
gtk_list_signal_extend_selection (GtkListItem *list_item,
GtkScrollType scroll_type,
gfloat position,
gboolean auto_start_selection,
GtkList *list)
{
g_return_if_fail (GTK_IS_LIST_ITEM (list_item));
g_return_if_fail (GTK_IS_LIST (list));
gtk_list_extend_selection (list, scroll_type, position,
auto_start_selection);
}
static void
gtk_list_signal_scroll_horizontal (GtkListItem *list_item,
GtkScrollType scroll_type,
gfloat position,
GtkList *list)
{
g_return_if_fail (GTK_IS_LIST_ITEM (list_item));
g_return_if_fail (GTK_IS_LIST (list));
gtk_list_scroll_horizontal (list, scroll_type, position);
}
static void
gtk_list_signal_scroll_vertical (GtkListItem *list_item,
GtkScrollType scroll_type,
gfloat position,
GtkList *list)
{
g_return_if_fail (GTK_IS_LIST_ITEM (list_item));
g_return_if_fail (GTK_IS_LIST (list));
gtk_list_scroll_vertical (list, scroll_type, position);
}
static void
gtk_list_signal_toggle_add_mode (GtkListItem *list_item,
GtkList *list)
{
g_return_if_fail (GTK_IS_LIST_ITEM (list_item));
g_return_if_fail (GTK_IS_LIST (list));
gtk_list_toggle_add_mode (list);
}
static void
gtk_list_signal_item_select (GtkListItem *list_item,
GtkList *list)
{
GList *selection;
GList *tmp_list;
GList *sel_list;
g_return_if_fail (GTK_IS_LIST_ITEM (list_item));
g_return_if_fail (GTK_IS_LIST (list));
if (GTK_WIDGET (list_item)->state != GTK_STATE_SELECTED)
return;
switch (list->selection_mode)
{
case GTK_SELECTION_SINGLE:
case GTK_SELECTION_BROWSE:
sel_list = NULL;
selection = list->selection;
while (selection)
{
tmp_list = selection;
selection = selection->next;
if (tmp_list->data == list_item)
sel_list = tmp_list;
else
gtk_list_item_deselect (GTK_LIST_ITEM (tmp_list->data));
}
if (!sel_list)
{
list->selection = g_list_prepend (list->selection, list_item);
gtk_widget_ref (GTK_WIDGET (list_item));
}
gtk_signal_emit (GTK_OBJECT (list), list_signals[SELECTION_CHANGED]);
break;
case GTK_SELECTION_EXTENDED:
if (list->anchor >= 0)
return;
case GTK_SELECTION_MULTIPLE:
if (!g_list_find (list->selection, list_item))
{
list->selection = g_list_prepend (list->selection, list_item);
gtk_widget_ref (GTK_WIDGET (list_item));
gtk_signal_emit (GTK_OBJECT (list), list_signals[SELECTION_CHANGED]);
}
break;
}
}
static void
gtk_list_signal_item_deselect (GtkListItem *list_item,
GtkList *list)
{
GList *node;
g_return_if_fail (GTK_IS_LIST_ITEM (list_item));
g_return_if_fail (GTK_IS_LIST (list));
if (GTK_WIDGET (list_item)->state != GTK_STATE_NORMAL)
return;
node = g_list_find (list->selection, list_item);
if (node)
{
list->selection = g_list_remove_link (list->selection, node);
g_list_free_1 (node);
gtk_widget_unref (GTK_WIDGET (list_item));
gtk_signal_emit (GTK_OBJECT (list), list_signals[SELECTION_CHANGED]);
}
}
static void
gtk_list_signal_item_toggle (GtkListItem *list_item,
GtkList *list)
{
g_return_if_fail (GTK_IS_LIST_ITEM (list_item));
g_return_if_fail (GTK_IS_LIST (list));
if ((list->selection_mode == GTK_SELECTION_BROWSE ||
list->selection_mode == GTK_SELECTION_EXTENDED) &&
GTK_WIDGET (list_item)->state == GTK_STATE_NORMAL)
{
gtk_widget_set_state (GTK_WIDGET (list_item), GTK_STATE_SELECTED);
return;
}
switch (GTK_WIDGET (list_item)->state)
{
case GTK_STATE_SELECTED:
gtk_list_signal_item_select (list_item, list);
break;
case GTK_STATE_NORMAL:
gtk_list_signal_item_deselect (list_item, list);
break;
default:
break;
}
}
static void
gtk_list_signal_drag_begin (GtkWidget *widget,
GdkDragContext *context,
GtkList *list)
{
g_return_if_fail (GTK_IS_LIST_ITEM (widget));
g_return_if_fail (GTK_IS_LIST (list));
gtk_list_drag_begin (GTK_WIDGET (list), context);
}
static void
gtk_list_drag_begin (GtkWidget *widget,
GdkDragContext *context)
{
GtkList *list;
g_return_if_fail (GTK_IS_LIST (widget));
g_return_if_fail (context != NULL);
list = GTK_LIST (widget);
if (list->drag_selection)
{
gtk_list_end_drag_selection (list);
switch (list->selection_mode)
{
case GTK_SELECTION_EXTENDED:
gtk_list_end_selection (list);
break;
case GTK_SELECTION_SINGLE:
case GTK_SELECTION_MULTIPLE:
list->undo_focus_child = NULL;
break;
default:
break;
}
}
}
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