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135cdd43a96ac51f848f0ed54aea04c194e0118d
gtk3/gtk/gtkhandlebox.c
Tim Janik c86bf9bae2 refuse to allocate with a greater height than requested. 
Sat Mar 14 08:29:56 1998  Tim Janik  <timj@gimp.org>

        * gtk/gtkhandlebox.c (gtk_handle_box_size_allocate): refuse to allocate
                with a greater height than requested.
                        (gtk_handle_box_remove): clean up if the child is detached.

                                * gtk/gtktoolbar.c (gtk_toolbar_size_allocate): don't take invisible
                                        children into account.
1998-03-14 08:15:23 +00:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
* Copyright (C) 1998 Elliot Lee
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdlib.h>
#include "gdk/gdkx.h"
#include "gtkhandlebox.h"
#include "gtkmain.h"
#include "gtksignal.h"
#include "gtkwindow.h"
#define DRAG_HANDLE_SIZE 10
#define BORDER_SIZE 5
#define GHOST_HEIGHT 3
#define SNAP_TOLERANCE 16
enum
{
SIGNAL_CHILD_ATTACHED,
SIGNAL_CHILD_DETACHED,
SIGNAL_LAST
};
typedef void (*SignalChildAttached) (GtkObject *object,
GtkWidget *widget,
gpointer func_data);
static void gtk_handle_box_class_init (GtkHandleBoxClass *klass);
static void gtk_handle_box_init (GtkHandleBox *handle_box);
static void gtk_handle_box_destroy (GtkObject *object);
static void gtk_handle_box_map (GtkWidget *widget);
static void gtk_handle_box_unmap (GtkWidget *widget);
static void gtk_handle_box_realize (GtkWidget *widget);
static void gtk_handle_box_unrealize (GtkWidget *widget);
static void gtk_handle_box_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_handle_box_size_allocate (GtkWidget *widget,
GtkAllocation *real_allocation);
static void gtk_handle_box_remove (GtkContainer *container,
GtkWidget *widget);
static void gtk_handle_box_draw_ghost (GtkWidget *widget);
static void gtk_handle_box_paint (GtkWidget *widget,
GdkEventExpose *event,
GdkRectangle *area);
static void gtk_handle_box_draw (GtkWidget *widget,
GdkRectangle *area);
static gint gtk_handle_box_expose (GtkWidget *widget,
GdkEventExpose *event);
static gint gtk_handle_box_button_changed (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_handle_box_motion (GtkWidget *widget,
GdkEventMotion *event);
static gint gtk_handle_box_delete_float (GtkWidget *widget,
GdkEvent *event,
gpointer data);
static GtkBinClass *parent_class;
static guint handle_box_signals[SIGNAL_LAST] = { 0 };
guint
gtk_handle_box_get_type (void)
{
static guint handle_box_type = 0;
if (!handle_box_type)
{
GtkTypeInfo handle_box_info =
{
"GtkHandleBox",
sizeof (GtkHandleBox),
sizeof (GtkHandleBoxClass),
(GtkClassInitFunc) gtk_handle_box_class_init,
(GtkObjectInitFunc) gtk_handle_box_init,
(GtkArgSetFunc) NULL,
(GtkArgGetFunc) NULL,
};
handle_box_type = gtk_type_unique (gtk_bin_get_type (), &handle_box_info);
}
return handle_box_type;
}
static void
gtk_handle_box_marshal_child_attached (GtkObject *object,
GtkSignalFunc func,
gpointer func_data,
GtkArg *args)
{
SignalChildAttached sfunc = (SignalChildAttached) func;
(* sfunc) (object,
(GtkWidget*) GTK_VALUE_OBJECT (args[0]),
func_data);
}
static void
gtk_handle_box_class_init (GtkHandleBoxClass *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_bin_get_type ());
handle_box_signals[SIGNAL_CHILD_ATTACHED] =
gtk_signal_new ("child_attached",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkHandleBoxClass, child_attached),
gtk_handle_box_marshal_child_attached,
GTK_TYPE_NONE, 1,
GTK_TYPE_WIDGET);
handle_box_signals[SIGNAL_CHILD_DETACHED] =
gtk_signal_new ("child_detached",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkHandleBoxClass, child_detached),
gtk_handle_box_marshal_child_attached,
GTK_TYPE_NONE, 1,
GTK_TYPE_WIDGET);
gtk_object_class_add_signals (object_class, handle_box_signals, SIGNAL_LAST);
object_class->destroy = gtk_handle_box_destroy;
widget_class->map = gtk_handle_box_map;
widget_class->unmap = gtk_handle_box_unmap;
widget_class->realize = gtk_handle_box_realize;
widget_class->unrealize = gtk_handle_box_unrealize;
widget_class->size_request = gtk_handle_box_size_request;
widget_class->size_allocate = gtk_handle_box_size_allocate;
widget_class->draw = gtk_handle_box_draw;
widget_class->expose_event = gtk_handle_box_expose;
widget_class->button_press_event = gtk_handle_box_button_changed;
widget_class->button_release_event = gtk_handle_box_button_changed;
widget_class->motion_notify_event = gtk_handle_box_motion;
container_class->remove = gtk_handle_box_remove;
class->child_attached = NULL;
class->child_detached = NULL;
}
static void
gtk_handle_box_init (GtkHandleBox *handle_box)
{
GTK_WIDGET_UNSET_FLAGS (handle_box, GTK_NO_WINDOW);
GTK_WIDGET_SET_FLAGS (handle_box, GTK_BASIC); /* FIXME: are we really a basic widget? */
handle_box->steady_window = NULL;
handle_box->float_window = NULL;
handle_box->is_being_dragged = FALSE;
handle_box->is_onroot = FALSE;
handle_box->overlap_attaches = FALSE;
handle_box->fleur_cursor = gdk_cursor_new (GDK_FLEUR);
handle_box->dragoff_x = 0;
handle_box->dragoff_y = 0;
handle_box->steady_x = 0;
handle_box->steady_x = 0;
}
GtkWidget*
gtk_handle_box_new (void)
{
return GTK_WIDGET (gtk_type_new (gtk_handle_box_get_type ()));
}
static void
gtk_handle_box_destroy (GtkObject *object)
{
GtkHandleBox *hb;
g_return_if_fail (object != NULL);
g_return_if_fail (GTK_IS_HANDLE_BOX (object));
hb = GTK_HANDLE_BOX (object);
gdk_cursor_destroy (hb->fleur_cursor);
hb->fleur_cursor = NULL;
if (GTK_OBJECT_CLASS (parent_class)->destroy)
(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}
static void
gtk_handle_box_map (GtkWidget *widget)
{
GtkBin *bin;
GtkHandleBox *hb;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
bin = GTK_BIN (widget);
hb = GTK_HANDLE_BOX (widget);
gdk_window_show (hb->steady_window);
gdk_window_show (widget->window);
if (bin->child
&& GTK_WIDGET_VISIBLE (bin->child)
&& !GTK_WIDGET_MAPPED (bin->child))
gtk_widget_map (bin->child);
}
static void
gtk_handle_box_unmap (GtkWidget *widget)
{
GtkHandleBox *hb;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
hb = GTK_HANDLE_BOX (widget);
gdk_window_hide (widget->window);
gdk_window_hide (hb->steady_window);
}
static void
gtk_handle_box_realize (GtkWidget *widget)
{
GdkWindowAttr attributes;
gint attributes_mask;
GtkHandleBox *hb;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
hb = GTK_HANDLE_BOX (widget);
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
hb->float_window = gtk_window_new (GTK_WINDOW_DIALOG);
gtk_window_set_policy (GTK_WINDOW (hb->float_window), FALSE, FALSE, TRUE);
gtk_container_border_width (GTK_CONTAINER (hb->float_window), 0);
gtk_signal_connect (GTK_OBJECT (hb->float_window), "delete_event",
(GtkSignalFunc) gtk_handle_box_delete_float,
hb);
gtk_widget_realize (hb->float_window);
gdk_window_set_decorations (hb->float_window->window, 0);
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.window_type = GDK_WINDOW_CHILD;
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;
hb->steady_window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
gdk_window_set_user_data (hb->steady_window, widget);
attributes.x = 0;
attributes.y = 0;
attributes.event_mask |= (GDK_BUTTON1_MOTION_MASK
| GDK_POINTER_MOTION_HINT_MASK
| GDK_BUTTON_PRESS_MASK
| GDK_BUTTON_RELEASE_MASK);
widget->window = gdk_window_new (hb->steady_window, &attributes, attributes_mask);
gdk_window_set_user_data (widget->window, widget);
widget->style = gtk_style_attach (widget->style, widget->window);
gtk_style_set_background (widget->style, hb->steady_window, GTK_STATE_NORMAL);
gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
}
static void
gtk_handle_box_unrealize (GtkWidget *widget)
{
GtkHandleBox *hb;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
hb = GTK_HANDLE_BOX (widget);
if (hb->steady_window)
{
gdk_window_set_user_data (hb->steady_window, NULL);
gdk_window_destroy (hb->steady_window);
hb->steady_window = NULL;
}
gtk_widget_destroy (hb->float_window);
hb->float_window = NULL;
if (GTK_WIDGET_CLASS (parent_class)->unrealize)
(* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
}
static void
gtk_handle_box_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkBin *bin;
GtkHandleBox *hb;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
g_return_if_fail (requisition != NULL);
bin = GTK_BIN (widget);
hb = GTK_HANDLE_BOX (widget);
requisition->width = DRAG_HANDLE_SIZE + GTK_CONTAINER (widget)->border_width * 2;
requisition->height = GTK_CONTAINER (widget)->border_width * 2;
if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
{
gtk_widget_size_request (bin->child, &bin->child->requisition);
requisition->width += bin->child->requisition.width;
requisition->height += bin->child->requisition.height;
}
hb->real_requisition = *requisition;
if (hb->is_onroot)
requisition->height = GHOST_HEIGHT;
/* FIXME: Should also set requisition->width to a small value? */
}
static void
gtk_handle_box_size_allocate (GtkWidget *widget,
GtkAllocation *real_allocation)
{
GtkBin *bin;
GtkAllocation *allocation;
GtkHandleBox *hb;
gint border_width;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
g_return_if_fail (real_allocation != NULL);
bin = GTK_BIN (widget);
hb = GTK_HANDLE_BOX (widget);
allocation = &widget->allocation;
allocation->x = real_allocation->x;
if (real_allocation->height > widget->requisition.height)
allocation->y = real_allocation->y + (real_allocation->height - widget->requisition.height) / 2;
else
allocation->y = real_allocation->y;
allocation->height = MIN (real_allocation->height, widget->requisition.height);
allocation->width = real_allocation->width;
/* this will refuse to allocate width greater than neccessary:
* allocation->width = MIN (real_allocation->width, widget->requisition.width);
*/
border_width = GTK_CONTAINER (widget)->border_width;
if (GTK_WIDGET_REALIZED (widget))
{
if (!hb->is_onroot)
{
gdk_window_move_resize (hb->steady_window,
allocation->x + border_width,
allocation->y + border_width,
allocation->width - border_width * 2,
allocation->height - border_width * 2);
gdk_window_move_resize (widget->window,
0,
0,
allocation->width - border_width * 2,
allocation->height - border_width * 2);
}
else
{
gtk_widget_set_usize (hb->float_window,
hb->real_requisition.width,
hb->real_requisition.height);
gdk_window_resize (widget->window,
hb->real_requisition.width,
hb->real_requisition.height);
gdk_window_move_resize (hb->steady_window,
allocation->x + border_width,
allocation->y + border_width,
allocation->width - border_width * 2,
GHOST_HEIGHT);
}
}
if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
{
GtkAllocation child_allocation;
child_allocation.x = DRAG_HANDLE_SIZE;
child_allocation.y = 0;
if (hb->is_onroot)
{
child_allocation.width = hb->real_requisition.width - DRAG_HANDLE_SIZE;
child_allocation.height = hb->real_requisition.height;
}
else
{
child_allocation.width = allocation->width - DRAG_HANDLE_SIZE - border_width * 2;
child_allocation.height = allocation->height - border_width * 2;
}
gtk_widget_size_allocate (bin->child, &child_allocation);
}
}
static void
gtk_handle_box_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkHandleBox *hb;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_HANDLE_BOX (container));
g_return_if_fail (widget != NULL);
hb = GTK_HANDLE_BOX (container);
if (widget == GTK_BIN (container)->child &&
GTK_WIDGET_REALIZED (hb) &&
hb->is_onroot)
{
hb->is_onroot = FALSE;
gdk_pointer_ungrab (GDK_CURRENT_TIME);
gdk_window_reparent (widget->window, hb->steady_window, 0, 0);
gtk_widget_hide (hb->float_window);
}
GTK_CONTAINER_CLASS (parent_class)->remove (container, widget);
}
static void
gtk_handle_box_draw_ghost (GtkWidget *widget)
{
gtk_draw_hline (widget->style,
GTK_HANDLE_BOX (widget)->steady_window,
GTK_WIDGET_STATE (widget),
0,
widget->allocation.width - GTK_CONTAINER (widget)->border_width * 2,
0);
}
static void
gtk_handle_box_paint (GtkWidget *widget,
GdkEventExpose *event,
GdkRectangle *area)
{
GtkBin *bin;
GtkHandleBox *hb;
GdkRectangle child_area;
GdkEventExpose child_event;
gint x;
bin = GTK_BIN (widget);
hb = GTK_HANDLE_BOX (widget);
if (event != NULL)
area = &event->area;
for (x = 1; x < DRAG_HANDLE_SIZE; x += 3)
gtk_draw_vline (widget->style,
widget->window,
GTK_WIDGET_STATE (widget),
0, hb->is_onroot ? hb->real_requisition.height : widget->allocation.height,
x);
if (hb->is_onroot)
gtk_draw_shadow (widget->style,
widget->window,
GTK_WIDGET_STATE (widget),
GTK_SHADOW_OUT,
0, 0,
hb->real_requisition.width,
hb->real_requisition.height);
else
gtk_draw_shadow (widget->style,
widget->window,
GTK_WIDGET_STATE (widget),
GTK_SHADOW_OUT,
0, 0,
widget->allocation.width,
widget->allocation.height);
if (bin->child)
{
if (event == NULL) /* we were called from draw() */
{
if (gtk_widget_intersect (bin->child, area, &child_area))
gtk_widget_draw (bin->child, &child_area);
}
else /* we were called from expose() */
{
child_event = *event;
if (GTK_WIDGET_NO_WINDOW (bin->child)
&& gtk_widget_intersect (bin->child, &event->area, &child_event.area))
gtk_widget_event (bin->child, (GdkEvent *) &child_event);
}
}
}
static void
gtk_handle_box_draw (GtkWidget *widget,
GdkRectangle *area)
{
GdkRectangle child_area;
GtkHandleBox *hb;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
g_return_if_fail (area != NULL);
hb = GTK_HANDLE_BOX (widget);
if (GTK_WIDGET_DRAWABLE (widget))
{
if (hb->is_onroot)
{
/* The area parameter does not make sense in this case, so we
* repaint everything.
*/
gtk_handle_box_draw_ghost (widget);
child_area.x = 0;
child_area.y = 0;
child_area.width = hb->real_requisition.width;
child_area.height = hb->real_requisition.height;
gtk_handle_box_paint (widget, NULL, &child_area);
}
else
gtk_handle_box_paint (widget, NULL, area);
}
}
static gint
gtk_handle_box_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkHandleBox *hb;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (GTK_WIDGET_DRAWABLE (widget))
{
hb = GTK_HANDLE_BOX (widget);
if (event->window == hb->steady_window)
gtk_handle_box_draw_ghost (widget);
else if (event->window == widget->window)
gtk_handle_box_paint (widget, event, NULL);
}
return FALSE;
}
static gint
gtk_handle_box_button_changed (GtkWidget *widget,
GdkEventButton *event)
{
GtkHandleBox *hb;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
hb = GTK_HANDLE_BOX (widget);
if (event->button == 1)
{
if ((event->type == GDK_BUTTON_PRESS) && (event->x < DRAG_HANDLE_SIZE))
{
hb->dragoff_x = event->x;
hb->dragoff_y = event->y;
gdk_window_get_origin (hb->steady_window, &hb->steady_x, &hb->steady_y);
hb->is_being_dragged = TRUE;
gdk_flush();
gtk_grab_add (widget);
while (gdk_pointer_grab (widget->window,
FALSE,
(GDK_BUTTON1_MOTION_MASK
| GDK_POINTER_MOTION_HINT_MASK
| GDK_BUTTON_RELEASE_MASK),
NULL,
hb->fleur_cursor,
GDK_CURRENT_TIME) != 0); /* wait for success */
}
else if ((event->type == GDK_BUTTON_RELEASE) && hb->is_being_dragged)
{
gdk_pointer_ungrab (GDK_CURRENT_TIME);
gtk_grab_remove (widget);
hb->is_being_dragged = FALSE;
}
}
return TRUE;
}
static gint
gtk_handle_box_motion (GtkWidget *widget,
GdkEventMotion *event)
{
GtkHandleBox *hb;
gint newx, newy;
gint ox, oy;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
hb = GTK_HANDLE_BOX (widget);
if (event->is_hint)
{
gdk_window_get_origin (widget->window, &ox, &oy);
gdk_window_get_pointer (widget->window, &newx, &newy, NULL);
newx += ox;
newy += oy;
}
else
{
newx = event->x_root;
newy = event->y_root;
}
newx -= hb->dragoff_x;
newy -= hb->dragoff_y;
if (hb->is_being_dragged)
{
if ((abs (hb->steady_x - newx) < SNAP_TOLERANCE)
&& (abs (hb->steady_y - newy) < SNAP_TOLERANCE))
{
if (hb->is_onroot)
{
hb->is_onroot = FALSE;
gdk_pointer_ungrab (GDK_CURRENT_TIME);
gdk_window_reparent (widget->window, hb->steady_window, 0, 0);
gtk_widget_hide (hb->float_window);
gtk_signal_emit (GTK_OBJECT (hb),
handle_box_signals[SIGNAL_CHILD_ATTACHED],
GTK_BIN (hb)->child);
while (gdk_pointer_grab (widget->window,
FALSE,
(GDK_BUTTON1_MOTION_MASK
| GDK_POINTER_MOTION_HINT_MASK
| GDK_BUTTON_RELEASE_MASK),
NULL,
hb->fleur_cursor,
GDK_CURRENT_TIME) != 0); /* wait for success */
gtk_widget_queue_resize (widget);
}
}
else
{
if (hb->is_onroot)
{
gtk_widget_set_uposition (hb->float_window, newx, newy);
gdk_window_raise (hb->float_window->window);
}
else
{
hb->is_onroot = TRUE;
gdk_pointer_ungrab (GDK_CURRENT_TIME);
if (!GTK_WIDGET_REALIZED (hb->float_window))
gtk_widget_realize (hb->float_window);
gtk_widget_set_uposition (hb->float_window, newx, newy);
gdk_window_reparent (widget->window, hb->float_window->window, 0, 0);
gtk_widget_show (hb->float_window);
gtk_signal_emit (GTK_OBJECT (hb),
handle_box_signals[SIGNAL_CHILD_DETACHED],
GTK_BIN (hb)->child);
while (gdk_pointer_grab (widget->window,
FALSE,
(GDK_BUTTON1_MOTION_MASK
| GDK_POINTER_MOTION_HINT_MASK
| GDK_BUTTON_RELEASE_MASK),
NULL,
hb->fleur_cursor,
GDK_CURRENT_TIME) != 0); /* wait for success */
gtk_widget_queue_resize (widget);
}
}
}
return TRUE;
}
static gint
gtk_handle_box_delete_float (GtkWidget *widget,
GdkEvent *event,
gpointer data)
{
GtkHandleBox *hb;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (event != NULL, FALSE);
g_return_val_if_fail (data != NULL, FALSE);
g_return_val_if_fail (GTK_IS_HANDLE_BOX (data), FALSE);
hb = GTK_HANDLE_BOX (data);
hb->is_onroot = FALSE;
gdk_window_reparent (GTK_WIDGET (hb)->window, hb->steady_window, 0, 0);
gtk_widget_hide (hb->float_window);
gtk_signal_emit (GTK_OBJECT (hb),
handle_box_signals[SIGNAL_CHILD_ATTACHED],
GTK_BIN (hb)->child);
gtk_widget_queue_resize (GTK_WIDGET (hb));
return TRUE;
}
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