/* matecomponent-dock-item.c
 *
 * Copyright (C) 1998 Ettore Perazzoli
 * Copyright (C) 1998 Elliot Lee
 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
 * All rights reserved.
 *
 * 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., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */
/*
  @NOTATION@
*/

/*
 * NB. this may look like a GtkBin, but it contains
 * a MateComponentDockItemGrip in addition to it's child,
 * stranger things have been done in the name of
 * bin-compat.
 */

#include <config.h>
#include "matecomponent-dock-item.h"
#include "matecomponent-dock-band.h"
#include "matecomponent-dock-item-grip.h"
#include "matecomponent-ui-marshal.h"

#ifdef GDK_WINDOWING_X11
#include <gdk/gdkx.h>
#endif
#include <gdk/gdkkeysyms.h>
#include <gtk/gtk.h>

#include <glib/gi18n-lib.h>

struct _MateComponentDockItemPrivate
{
  GtkWidget *child;
  GtkWidget *grip;

  GtkWidget *float_window;
  GtkWidget *float_window_box;
  gboolean  float_window_hidden;
};

G_DEFINE_TYPE (MateComponentDockItem, matecomponent_dock_item, GTK_TYPE_BIN)

enum {
  PROP_0,
  PROP_SHADOW,
  PROP_ORIENTATION,
  PROP_PREFERRED_WIDTH,
  PROP_PREFERRED_HEIGHT
};

#define DRAG_HANDLE_SIZE 10

enum {
  DOCK_DRAG_BEGIN,
  DOCK_DRAG_END,
  DOCK_DRAG_MOTION,
  DOCK_DETACH,
  ORIENTATION_CHANGED,
  LAST_SIGNAL
};

static guint     get_preferred_width   (MateComponentDockItem *item);
static guint     get_preferred_height  (MateComponentDockItem *item);

static void matecomponent_dock_item_set_property   (GObject            *object,
					     guint               param_id,
					     const GValue       *value,
					     GParamSpec         *pspec);
static void matecomponent_dock_item_get_property   (GObject            *object,
					     guint               param_id,
					     GValue             *value,
					     GParamSpec         *pspec);
static void matecomponent_dock_item_finalize       (GObject           *object);
static void matecomponent_dock_item_map            (GtkWidget         *widget);
static void matecomponent_dock_item_unmap          (GtkWidget         *widget);
static void matecomponent_dock_item_realize        (GtkWidget         *widget);
static void matecomponent_dock_item_unrealize      (GtkWidget         *widget);
static void matecomponent_dock_item_style_set      (GtkWidget         *widget,
					     GtkStyle          *previous_style);
static void matecomponent_dock_item_size_request   (GtkWidget         *widget,
					     GtkRequisition    *requisition);
static void matecomponent_dock_item_size_allocate  (GtkWidget         *widget,
					     GtkAllocation     *real_allocation);
static void matecomponent_dock_item_add            (GtkContainer      *container,
					     GtkWidget         *widget);
static void matecomponent_dock_item_remove         (GtkContainer      *container,
					     GtkWidget         *widget);
static void matecomponent_dock_item_forall         (GtkContainer     *container,
					     gboolean          include_internals,
					     GtkCallback       callback,
					     gpointer          callback_data);
static void matecomponent_dock_item_paint          (GtkWidget         *widget,
					     GdkEventExpose    *event);
static gboolean matecomponent_dock_item_expose     (GtkWidget         *widget,
					     GdkEventExpose    *event);
static gboolean matecomponent_dock_item_button_changed (GtkWidget         *widget,
						 GdkEventButton    *event);
static gboolean matecomponent_dock_item_motion     (GtkWidget         *widget,
					     GdkEventMotion    *event);

static void matecomponent_dock_item_float_window_size_request (GtkWidget *widget, GtkRequisition *requisition, gpointer data);
static void matecomponent_dock_item_float_window_size_allocate (GtkWidget *widget, GtkAllocation *allocation, gpointer data);

static gboolean matecomponent_dock_item_float_window_expose (GtkWidget *widget, GdkEventExpose *event, gpointer data);
static gboolean matecomponent_dock_item_float_window_button_changed (GtkWidget *widget, GdkEventButton *event, gpointer data);
static gboolean matecomponent_dock_item_float_window_motion (GtkWidget *widget, GdkEventMotion *event, gpointer data);

static guint        dock_item_signals[LAST_SIGNAL] = { 0 };


/* Helper functions.  */

static gboolean
check_guint_arg (GObject *object,
		 const gchar *name,
		 guint *value_return)
{
  GParamSpec *pspec;

  g_return_val_if_fail (object != NULL, FALSE);

  pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (object), name);
  if (pspec != NULL) {
    GValue value = { 0, };

    g_value_init (&value, G_TYPE_UINT);
    g_object_get_property (G_OBJECT (object), name, &value);
    *value_return = g_value_get_uint (&value);
    g_value_unset (&value);

    return TRUE;
  } else
    return FALSE;
}

static guint
get_preferred_width (MateComponentDockItem *dock_item)
{
  GtkWidget *child;
  guint preferred_width;

  child = dock_item->_priv->child;

  if (!child)
    return 0;

  if (! check_guint_arg (G_OBJECT (child), "preferred_width", &preferred_width))
    {
      GtkRequisition child_requisition;

      gtk_widget_get_child_requisition (child, &child_requisition);
      preferred_width = child_requisition.width;
    }

  if (dock_item->orientation == GTK_ORIENTATION_HORIZONTAL)
    preferred_width += MATECOMPONENT_DOCK_ITEM_NOT_LOCKED (dock_item) ? DRAG_HANDLE_SIZE : 0;

  preferred_width += GTK_CONTAINER (dock_item)->border_width * 2;

  return preferred_width;
}

static guint
get_preferred_height (MateComponentDockItem *dock_item)
{
  GtkWidget *child;
  guint preferred_height;

  child = dock_item->_priv->child;

  if (!child)
    return 0;

  if (! check_guint_arg (G_OBJECT (child), "preferred_height", &preferred_height))
    {
      GtkRequisition child_requisition;

      gtk_widget_get_child_requisition (child, &child_requisition);
      preferred_height = child_requisition.height;
    }

  if (dock_item->orientation == GTK_ORIENTATION_VERTICAL)
    preferred_height += MATECOMPONENT_DOCK_ITEM_NOT_LOCKED (dock_item) ? DRAG_HANDLE_SIZE : 0;

  preferred_height += GTK_CONTAINER (dock_item)->border_width * 2;

  return preferred_height;
}

static void
matecomponent_dock_item_class_init (MateComponentDockItemClass *klass)
{
  GObjectClass *gobject_class;
  GtkWidgetClass *widget_class;
  GtkContainerClass *container_class;

  gobject_class = (GObjectClass *) klass;
  widget_class = (GtkWidgetClass *) klass;
  container_class = (GtkContainerClass *) klass;

  gobject_class->set_property = matecomponent_dock_item_set_property;
  gobject_class->get_property = matecomponent_dock_item_get_property;

  g_object_class_install_property (
	  gobject_class,
	  PROP_SHADOW,
	  g_param_spec_enum ("shadow",
			     _("Shadow type"),
			     _("Shadow type"),
			     GTK_TYPE_SHADOW_TYPE,
			     GTK_SHADOW_OUT,
			     (G_PARAM_READABLE |
			      G_PARAM_WRITABLE)));

  g_object_class_install_property (
	  gobject_class,
	  PROP_ORIENTATION,
	  g_param_spec_enum ("orientation",
			     _("Orientation"),
			     _("Orientation"),
			     GTK_TYPE_ORIENTATION,
			     GTK_ORIENTATION_HORIZONTAL,
			     (G_PARAM_READABLE |
			      G_PARAM_WRITABLE)));

  g_object_class_install_property (
	  gobject_class,
	  PROP_PREFERRED_WIDTH,
	  g_param_spec_uint ("preferred_width",
			     _("Preferred width"),
			     _("Preferred width"),
			     0, G_MAXINT, 0,
			     G_PARAM_READABLE));

  g_object_class_install_property (
	  gobject_class,
	  PROP_PREFERRED_HEIGHT,
	  g_param_spec_uint ("preferred_height",
			     _("Preferred height"),
			     _("Preferred height"),
			     0, G_MAXINT, 0,
			     G_PARAM_READABLE));

  dock_item_signals[DOCK_DRAG_BEGIN] =
	  g_signal_new ("dock_drag_begin",
			G_TYPE_FROM_CLASS (gobject_class),
			G_SIGNAL_RUN_LAST,
			G_STRUCT_OFFSET (MateComponentDockItemClass,
					 dock_drag_begin),
			NULL, NULL,
			g_cclosure_marshal_VOID__VOID,
			G_TYPE_NONE, 0);

  dock_item_signals[DOCK_DRAG_MOTION] =
	  g_signal_new ("dock_drag_motion",
			G_TYPE_FROM_CLASS (gobject_class),
			G_SIGNAL_RUN_LAST,
			G_STRUCT_OFFSET (MateComponentDockItemClass, dock_drag_motion),
			NULL, NULL,
			matecomponent_ui_marshal_VOID__INT_INT,
			G_TYPE_NONE, 2, G_TYPE_INT, G_TYPE_INT);

  dock_item_signals[DOCK_DRAG_END] =
	  g_signal_new ("dock_drag_end",
			G_TYPE_FROM_CLASS (gobject_class),
			G_SIGNAL_RUN_LAST,
			G_STRUCT_OFFSET (MateComponentDockItemClass, dock_drag_end),
			NULL, NULL,
			g_cclosure_marshal_VOID__VOID,
			G_TYPE_NONE, 0);

  dock_item_signals[DOCK_DETACH] =
	  g_signal_new ("dock_detach",
			G_TYPE_FROM_CLASS (gobject_class),
			G_SIGNAL_RUN_LAST,
			G_STRUCT_OFFSET (MateComponentDockItemClass, dock_detach),
			NULL, NULL,
			g_cclosure_marshal_VOID__VOID,
			G_TYPE_NONE, 0);

  dock_item_signals[ORIENTATION_CHANGED] =
	  g_signal_new ("orientation_changed",
			G_TYPE_FROM_CLASS (gobject_class),
			G_SIGNAL_RUN_LAST,
			G_STRUCT_OFFSET (MateComponentDockItemClass, orientation_changed),
			NULL, NULL,
			g_cclosure_marshal_VOID__ENUM,
			G_TYPE_NONE, 1, GTK_TYPE_ORIENTATION);

  gobject_class->finalize = matecomponent_dock_item_finalize;

  widget_class->map = matecomponent_dock_item_map;
  widget_class->unmap = matecomponent_dock_item_unmap;
  widget_class->realize = matecomponent_dock_item_realize;
  widget_class->unrealize = matecomponent_dock_item_unrealize;
  widget_class->style_set = matecomponent_dock_item_style_set;
  widget_class->size_request = matecomponent_dock_item_size_request;
  widget_class->size_allocate = matecomponent_dock_item_size_allocate;
  widget_class->expose_event = matecomponent_dock_item_expose;
  widget_class->button_press_event = matecomponent_dock_item_button_changed;
  widget_class->button_release_event = matecomponent_dock_item_button_changed;
  widget_class->motion_notify_event = matecomponent_dock_item_motion;

  container_class->add = matecomponent_dock_item_add;
  container_class->remove = matecomponent_dock_item_remove;
  container_class->forall = matecomponent_dock_item_forall;
}

static void
matecomponent_dock_item_init (MateComponentDockItem *dock_item)
{
  GTK_WIDGET_UNSET_FLAGS (dock_item, GTK_NO_WINDOW);

  dock_item->_priv = g_new0 (MateComponentDockItemPrivate, 1);

  dock_item->_priv->grip = matecomponent_dock_item_grip_new (dock_item);
  dock_item->_priv->float_window = NULL;
  dock_item->_priv->float_window_hidden = FALSE;

  gtk_widget_set_parent (dock_item->_priv->grip, GTK_WIDGET (dock_item));
  gtk_widget_show (dock_item->_priv->grip);

  dock_item->bin_window = NULL;
  dock_item->float_window = NULL;
  dock_item->shadow_type = GTK_SHADOW_OUT;

  dock_item->orientation = GTK_ORIENTATION_HORIZONTAL;
  dock_item->behavior = MATECOMPONENT_DOCK_ITEM_BEH_NORMAL;

  dock_item->float_window_mapped = FALSE;
  dock_item->is_floating = FALSE;
  dock_item->in_drag = FALSE;

  dock_item->dragoff_x = 0;
  dock_item->dragoff_y = 0;

  dock_item->float_x = 0;
  dock_item->float_y = 0;
}

static void
matecomponent_dock_item_set_property (GObject            *object,
			      guint               param_id,
			      const GValue       *value,
			      GParamSpec         *pspec)
{
  MateComponentDockItem *dock_item;

  g_return_if_fail (object != NULL);
  g_return_if_fail (MATECOMPONENT_IS_DOCK_ITEM (object));

  dock_item = MATECOMPONENT_DOCK_ITEM (object);

  switch (param_id)
    {
    case PROP_SHADOW:
      matecomponent_dock_item_set_shadow_type (dock_item, g_value_get_enum (value));
      break;
    case PROP_ORIENTATION:
      matecomponent_dock_item_set_orientation (dock_item, g_value_get_enum (value));
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
      break;
    }
}

static void
matecomponent_dock_item_get_property (GObject            *object,
			      guint               param_id,
			      GValue             *value,
			      GParamSpec         *pspec)
{
  MateComponentDockItem *dock_item;

  g_return_if_fail (object != NULL);
  g_return_if_fail (MATECOMPONENT_IS_DOCK_ITEM (object));

  dock_item = MATECOMPONENT_DOCK_ITEM (object);

  switch (param_id)
    {
    case PROP_SHADOW:
      g_value_set_enum (value, matecomponent_dock_item_get_shadow_type (dock_item));
      break;
    case PROP_ORIENTATION:
      g_value_set_enum (value, matecomponent_dock_item_get_orientation (dock_item));
      break;
    case PROP_PREFERRED_HEIGHT:
      g_value_set_uint (value, get_preferred_height (dock_item));
      break;
    case PROP_PREFERRED_WIDTH:
      g_value_set_uint (value, get_preferred_width (dock_item));
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
      break;
    }
}

static void
matecomponent_dock_item_finalize (GObject *object)
{
  MateComponentDockItem *di;

  g_return_if_fail (object != NULL);
  g_return_if_fail (MATECOMPONENT_IS_DOCK_ITEM (object));

  di = MATECOMPONENT_DOCK_ITEM (object);

  g_free (di->name);
  di->name = NULL;

  g_free (di->_priv);
  di->_priv = NULL;

  G_OBJECT_CLASS (matecomponent_dock_item_parent_class)->finalize (object);
}

static void
matecomponent_dock_item_map (GtkWidget *widget)
{
  GtkBin *bin;
  MateComponentDockItem *di;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (MATECOMPONENT_IS_DOCK_ITEM (widget));

  GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);

  bin = GTK_BIN (widget);
  di = MATECOMPONENT_DOCK_ITEM (widget);

  gdk_window_show (di->bin_window);
  if (! di->is_floating)
    gdk_window_show (widget->window);

  if (di->is_floating && !di->float_window_mapped)
    matecomponent_dock_item_detach (di, di->float_x, di->float_y);

  if (bin->child
      && GTK_WIDGET_VISIBLE (bin->child)
      && !GTK_WIDGET_MAPPED (bin->child))
    gtk_widget_map (bin->child);

  if (di->_priv->grip
      && GTK_WIDGET_VISIBLE (di->_priv->grip)
      && !GTK_WIDGET_MAPPED (di->_priv->grip))
    gtk_widget_map (di->_priv->grip);
}

static void
matecomponent_dock_item_unmap (GtkWidget *widget)
{
  MateComponentDockItem *di;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (MATECOMPONENT_IS_DOCK_ITEM (widget));

  GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);

  di = MATECOMPONENT_DOCK_ITEM (widget);

  gdk_window_hide (widget->window);
  if (di->float_window_mapped)
    {
      gtk_widget_hide (GTK_WIDGET (di->_priv->float_window));
      di->float_window_mapped = FALSE;
      di->_priv->float_window_hidden = TRUE;
    }

  if (di->_priv->grip)
    gtk_widget_unmap (di->_priv->grip);
}

static void
matecomponent_dock_item_realize (GtkWidget *widget)
{
  GdkWindowAttr attributes;
  gint attributes_mask;
  MateComponentDockItem *di;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (MATECOMPONENT_IS_DOCK_ITEM (widget));

  di = MATECOMPONENT_DOCK_ITEM (widget);

  GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);

  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;
  widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
  gdk_window_set_user_data (widget->window, widget);

  attributes.x = 0;
  attributes.y = 0;
  attributes.width = widget->allocation.width;
  attributes.height = widget->allocation.height;
  attributes.window_type = GDK_WINDOW_CHILD;
  attributes.event_mask |= (gtk_widget_get_events (widget) |
			    GDK_EXPOSURE_MASK |
			    GDK_BUTTON1_MOTION_MASK |
			    GDK_POINTER_MOTION_HINT_MASK |
			    GDK_BUTTON_PRESS_MASK |
			    GDK_BUTTON_RELEASE_MASK |
	                    GDK_KEY_PRESS_MASK);
  attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
  di->bin_window = gdk_window_new (widget->window, &attributes, attributes_mask);
  gdk_window_set_user_data (di->bin_window, widget);

  if (GTK_BIN (di)->child)
    gtk_widget_set_parent_window (GTK_BIN (di)->child, di->bin_window);

  gtk_widget_set_parent_window (di->_priv->grip, di->bin_window);

  di->_priv->float_window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  gtk_window_set_screen (GTK_WINDOW (di->_priv->float_window), gtk_widget_get_screen (widget));
  gtk_window_set_decorated (GTK_WINDOW (di->_priv->float_window), FALSE);

  g_signal_connect (di->_priv->float_window, "size_allocate",
		    G_CALLBACK (matecomponent_dock_item_float_window_size_allocate),
		    di);

  g_signal_connect (di->_priv->float_window, "size_request",
		    G_CALLBACK (matecomponent_dock_item_float_window_size_request),
		    di);
  g_signal_connect (di->_priv->float_window, "expose_event",
		    G_CALLBACK (matecomponent_dock_item_float_window_expose),
		    di);

  g_signal_connect (di->_priv->float_window, "button_press_event",
		    G_CALLBACK (matecomponent_dock_item_float_window_button_changed),
		    di);

  g_signal_connect (di->_priv->float_window, "button_release_event",
		    G_CALLBACK (matecomponent_dock_item_float_window_button_changed),
		    di);

  g_signal_connect (di->_priv->float_window, "motion_notify_event",
		    G_CALLBACK (matecomponent_dock_item_float_window_motion),
		    di);

  widget->style = gtk_style_attach (widget->style, widget->window);
  gtk_style_set_background (widget->style, widget->window, GTK_WIDGET_STATE (di));
  gtk_style_set_background (widget->style, di->bin_window, GTK_WIDGET_STATE (di));
  gdk_window_set_back_pixmap (widget->window, NULL, TRUE);

  if (di->is_floating)
    matecomponent_dock_item_detach (di, di->float_x, di->float_y);
}

static void
matecomponent_dock_item_unrealize (GtkWidget *widget)
{
  MateComponentDockItem *di;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (MATECOMPONENT_IS_DOCK_ITEM (widget));

  di = MATECOMPONENT_DOCK_ITEM (widget);

  gdk_window_set_user_data (di->bin_window, NULL);
  gdk_window_destroy (di->bin_window);
  di->bin_window = NULL;

  if (di->_priv->float_window_hidden)
     di->float_window_mapped = TRUE;

  if (di->float_window_mapped)
    matecomponent_dock_item_unfloat (di);

  gtk_widget_destroy (GTK_WIDGET (di->_priv->float_window));
  di->_priv->float_window = NULL;

  GTK_WIDGET_CLASS (matecomponent_dock_item_parent_class)->unrealize (widget);
}

static void
matecomponent_dock_item_style_set (GtkWidget *widget,
                           GtkStyle  *previous_style)
{
  MateComponentDockItem *di;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (MATECOMPONENT_IS_DOCK_ITEM (widget));

  di = MATECOMPONENT_DOCK_ITEM (widget);

  if (GTK_WIDGET_REALIZED (widget) &&
      !GTK_WIDGET_NO_WINDOW (widget))
    {
      gtk_style_set_background (widget->style, widget->window,
                                widget->state);
      gtk_style_set_background (widget->style, di->bin_window, widget->state);
      if (GTK_WIDGET_DRAWABLE (widget))
	gdk_window_clear (widget->window);
    }
}

static void
size_request (GtkWidget      *widget,
	      GtkRequisition *requisition,
	      MateComponentDockItem *dock_item)
{

  GtkBin  *bin;
  GtkRequisition child_requisition;

  bin = GTK_BIN (widget);

  /* If our child is not visible, we still request its size, since
     we won't have any useful hint for our size otherwise.  */
  if (bin->child != NULL)
    gtk_widget_size_request (bin->child, &child_requisition);
  else
    {
      child_requisition.width = 0;
      child_requisition.height = 0;
    }

  if (dock_item->orientation == GTK_ORIENTATION_HORIZONTAL)
    {
      requisition->width =
        MATECOMPONENT_DOCK_ITEM_NOT_LOCKED (dock_item) ? DRAG_HANDLE_SIZE : 0;
      if (bin->child != NULL)
        {
          requisition->width += child_requisition.width;
          requisition->height = child_requisition.height;
        }
      else
        requisition->height = 0;
    }
  else
    {
      requisition->height =
        MATECOMPONENT_DOCK_ITEM_NOT_LOCKED (dock_item) ? DRAG_HANDLE_SIZE : 0;
      if (bin->child != NULL)
        {
          requisition->width = child_requisition.width;
          requisition->height += child_requisition.height;
        }
      else
        requisition->width = 0;
    }

  requisition->width += GTK_CONTAINER (widget)->border_width * 2;
  requisition->height += GTK_CONTAINER (widget)->border_width * 2;
}

static void
matecomponent_dock_item_size_request (GtkWidget *widget,
			       GtkRequisition *requisition)
{

  MateComponentDockItem *dock_item;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (MATECOMPONENT_IS_DOCK_ITEM (widget));
  g_return_if_fail (requisition != NULL);

  dock_item = MATECOMPONENT_DOCK_ITEM (widget);

  size_request (widget, requisition, dock_item);

}

static void
matecomponent_dock_item_float_window_size_request (GtkWidget *widget,
					    GtkRequisition *requisition,
					    gpointer data)
{
  MateComponentDockItem *dock_item;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (requisition != NULL);

  dock_item = MATECOMPONENT_DOCK_ITEM (data);

  size_request (widget, requisition, dock_item);

}

static void
grip_size_allocate (GtkWidget *widget,
                    GtkAllocation *allocation,
		    GtkAllocation *child_allocation,
		    GtkWidget *grip,
		    MateComponentDockItem *di)
{
  GtkWidget *child  = GTK_BIN (widget)->child;

  GtkAllocation grip_alloc = *allocation;

  grip_alloc.x = grip_alloc.y = 0;

  if (di->orientation != GTK_ORIENTATION_HORIZONTAL) {

     grip_alloc.height = DRAG_HANDLE_SIZE;
     child_allocation->y += DRAG_HANDLE_SIZE;

   } else {

     grip_alloc.width = DRAG_HANDLE_SIZE;

     if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
        child_allocation->x += DRAG_HANDLE_SIZE;
     else {
        GtkRequisition child_requisition;

         gtk_widget_get_child_requisition (child, &child_requisition);
         grip_alloc.x = child_requisition.width;
      }
    }

    gtk_widget_size_allocate (grip, &grip_alloc);
}

static void
matecomponent_dock_item_float_window_size_allocate (GtkWidget *widget,
					     GtkAllocation *allocation,
					     gpointer data)
{
  GtkBin *bin;
  MateComponentDockItem *di;
  GtkRequisition child_requisition;
  GtkAllocation child_allocation;
  GtkWidget *child, *grip;
  int border_width;
  GList *list;

  di = MATECOMPONENT_DOCK_ITEM (data);

  bin = GTK_BIN(widget);
  child = bin->child;
  border_width = GTK_CONTAINER (widget)->border_width;

  /* Grip and InternalToolbar are the children */
  list = gtk_container_get_children (GTK_CONTAINER (child));

  grip = list->data;

  child_allocation.x = border_width;
  child_allocation.y = border_width;

  if (MATECOMPONENT_DOCK_ITEM_NOT_LOCKED(di))
    grip_size_allocate (widget, allocation, &child_allocation, grip, di);

  list = list->next;
  child = list->data;

  gtk_widget_get_child_requisition (child, &child_requisition);

  child_allocation.width = child_requisition.width + 2 * border_width;
  child_allocation.height = child_requisition.height + 2 * border_width;

  gtk_widget_size_allocate (child, &child_allocation);

}

static void
matecomponent_dock_item_size_allocate (GtkWidget     *widget,
				GtkAllocation *allocation)
{
  GtkBin *bin;
  MateComponentDockItem *di;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (MATECOMPONENT_IS_DOCK_ITEM (widget));
  g_return_if_fail (allocation != NULL);

  bin = GTK_BIN (widget);
  di = MATECOMPONENT_DOCK_ITEM (widget);

  widget->allocation = *allocation;

  if (GTK_WIDGET_REALIZED (widget))
    gdk_window_move_resize (widget->window,
                            widget->allocation.x,
                            widget->allocation.y,
                            widget->allocation.width,
                            widget->allocation.height);

  if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
    {
      GtkAllocation child_allocation;
      int border_width;

      border_width = GTK_CONTAINER (widget)->border_width;

      child_allocation.x = border_width;
      child_allocation.y = border_width;

      if (MATECOMPONENT_DOCK_ITEM_NOT_LOCKED(di))
        grip_size_allocate (widget, allocation, &child_allocation,di->_priv->grip, di);

      if (!di->is_floating)
        {
           child_allocation.width = MAX (1, (int) widget->allocation.width - 2 * border_width);
           child_allocation.height = MAX (1, (int) widget->allocation.height - 2 * border_width);

           if (MATECOMPONENT_DOCK_ITEM_NOT_LOCKED (di))
             {
               if (di->orientation == GTK_ORIENTATION_HORIZONTAL)
		 child_allocation.width = MAX ((int) child_allocation.width - DRAG_HANDLE_SIZE, 1);
               else
		 child_allocation.height = MAX ((int) child_allocation.height - DRAG_HANDLE_SIZE, 1);
             }

	    if (GTK_WIDGET_REALIZED (di))
	      gdk_window_move_resize (di->bin_window,
				    0,
				    0,
				    widget->allocation.width,
				    widget->allocation.height);
          }

        gtk_widget_size_allocate (bin->child, &child_allocation);

       }
}

static void
window_paint (GtkWidget *widget,
	      GdkEventExpose *event,
	      MateComponentDockItem *di)
{

   GdkWindow *window;
   GtkWidget *grip;
   GtkContainer  *container;

   if (!di->is_floating) {

      window = di->bin_window;
      container = GTK_CONTAINER (di);
      grip = di->_priv->grip;

   } else {

      GtkBin *bin;
      GtkWidget *child;
      GList *list;

      bin = GTK_BIN (widget);
      child = bin->child;
      list = gtk_container_get_children (GTK_CONTAINER (child));

      window = child->window;
      grip = list->data;
      container = GTK_CONTAINER (child);
   }

   if (!event)
    gtk_paint_box(widget->style,
                  window,
                  GTK_WIDGET_STATE (widget),
                  di->shadow_type,
                  NULL, widget,
                  "dockitem_bin",
                  0, 0, -1, -1);
  else
    gtk_paint_box(widget->style,
                  window,
                  GTK_WIDGET_STATE (widget),
                  di->shadow_type,
                  &event->area, widget,
                  "dockitem_bin",
                  0, 0, -1, -1);

  if (MATECOMPONENT_DOCK_ITEM_NOT_LOCKED (di))
      gtk_container_propagate_expose (
              container, grip , event);
}

static void
matecomponent_dock_item_float_window_paint (GtkWidget *widget,
				     GdkEventExpose *event,
				     gpointer data)
{
  MateComponentDockItem *di;

  di = MATECOMPONENT_DOCK_ITEM (data);

  if (di->is_floating)
    window_paint (widget, event, di);
}

static void
matecomponent_dock_item_paint (GtkWidget      *widget,
			GdkEventExpose *event)
{
  MateComponentDockItem *di;

  di = MATECOMPONENT_DOCK_ITEM (widget);

  if (!di->is_floating)
    window_paint (widget, event, di);

}

static gboolean
matecomponent_dock_item_float_window_expose (GtkWidget *widget,
				      GdkEventExpose *event,
				      gpointer data)
{
  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (event != NULL, FALSE);

  if (GTK_WIDGET_DRAWABLE (widget))
    {
      matecomponent_dock_item_float_window_paint (widget, event, data);

      GTK_WIDGET_CLASS (matecomponent_dock_item_parent_class)->expose_event (widget, event);
    }

  return FALSE;
}

static gboolean
matecomponent_dock_item_expose (GtkWidget      *widget,
			 GdkEventExpose *event)
{
  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (MATECOMPONENT_IS_DOCK_ITEM (widget), FALSE);
  g_return_val_if_fail (event != NULL, FALSE);

  if (GTK_WIDGET_DRAWABLE (widget) && event->window != widget->window)
    {
      matecomponent_dock_item_paint (widget, event);

      GTK_WIDGET_CLASS (matecomponent_dock_item_parent_class)->expose_event (widget, event);
    }

  return FALSE;
}

static void
matecomponent_dock_item_drag_end (MateComponentDockItem *di)
{
  gdk_display_pointer_ungrab
	  (gtk_widget_get_display (GTK_WIDGET (di)),
	   GDK_CURRENT_TIME);

  di->in_drag = FALSE;

  g_signal_emit (di, dock_item_signals [DOCK_DRAG_END], 0);
}

static gboolean
button_changed (GtkWidget *widget,
		GdkEventButton *event,
		MateComponentDockItem *di)
{

  gboolean event_handled = FALSE;

  if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
    {
      GtkWidget *child;
      gboolean in_handle;

      if (!di->is_floating)
        child = di->_priv->child;
      else
        child = GTK_WIDGET (matecomponent_dock_item_get_child (di));

      switch (di->orientation)
	{
	case GTK_ORIENTATION_HORIZONTAL:
	  if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
	    in_handle = event->x < DRAG_HANDLE_SIZE;
	  else
	    in_handle = event->x > widget->allocation.width - DRAG_HANDLE_SIZE;
	  break;
	case GTK_ORIENTATION_VERTICAL:
	  in_handle = event->y < DRAG_HANDLE_SIZE;
	  break;
	default:
	  in_handle = FALSE;
	  break;
	}

      if (!child)
	{
	  in_handle = FALSE;
	  event_handled = TRUE;
	}

      if (in_handle)
	{
	  di->dragoff_x = event->x;
	  di->dragoff_y = event->y;

          matecomponent_dock_item_grab_pointer (di);

          g_signal_emit (di , dock_item_signals[DOCK_DRAG_BEGIN], 0);

	  event_handled = TRUE;
	}
    }
  else if (event->type == GDK_BUTTON_RELEASE && di->in_drag)
    {
      matecomponent_dock_item_drag_end (di);
      event_handled = TRUE;
    }

  return event_handled;
}

static gboolean
matecomponent_dock_item_float_window_button_changed (GtkWidget *widget,
					      GdkEventButton *event,
					      gpointer data)
{

  MateComponentDockItem *di;

  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (event != NULL, FALSE);

  di = MATECOMPONENT_DOCK_ITEM (data);

  if (!MATECOMPONENT_DOCK_ITEM_NOT_LOCKED(di))
    return FALSE;

  return button_changed (widget, event, di);

}

static gboolean
matecomponent_dock_item_button_changed (GtkWidget      *widget,
                                GdkEventButton *event)
{
  MateComponentDockItem *di;

  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (MATECOMPONENT_IS_DOCK_ITEM (widget), FALSE);
  g_return_val_if_fail (event != NULL, FALSE);

  di = MATECOMPONENT_DOCK_ITEM (widget);

  if (event->window != di->bin_window)
    return FALSE;

  if (!MATECOMPONENT_DOCK_ITEM_NOT_LOCKED(widget))
    return FALSE;

  return button_changed (widget, event, di);

}

static gboolean
widget_motion (GtkWidget *widget,
	       GdkEventMotion *event,
	       MateComponentDockItem *di)
{
  GdkWindow *root_window;
  gint new_x, new_y;

  root_window = gdk_screen_get_root_window
	  (gdk_drawable_get_screen (GDK_DRAWABLE (event->window)));

  gdk_window_get_pointer (root_window, &new_x, &new_y, NULL);

  new_x -= di->dragoff_x;
  new_y -= di->dragoff_y;

  g_signal_emit (GTK_WIDGET (di), dock_item_signals[DOCK_DRAG_MOTION], 0,
		 new_x, new_y);

  return TRUE;
}

static gboolean
matecomponent_dock_item_float_window_motion (GtkWidget *widget,
				      GdkEventMotion *event,
				      gpointer data)
{
  MateComponentDockItem *di;

  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (event != NULL, FALSE);

  di = MATECOMPONENT_DOCK_ITEM (data);

  if (!di->in_drag)
    return FALSE;

  return widget_motion (widget, event, di);
}

static gboolean
matecomponent_dock_item_motion (GtkWidget      *widget,
			 GdkEventMotion *event)
{
  MateComponentDockItem *di;

  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (MATECOMPONENT_IS_DOCK_ITEM (widget), FALSE);
  g_return_val_if_fail (event != NULL, FALSE);

  di = MATECOMPONENT_DOCK_ITEM (widget);

  if (!di->in_drag)
    return FALSE;

  if (event->window != di->bin_window)
    return FALSE;

  return widget_motion (widget, event, di);
}

static void
matecomponent_dock_item_add (GtkContainer *container,
		      GtkWidget    *widget)
{
  MateComponentDockItem *dock_item;
  MateComponentDockItemPrivate *priv;
  GParamSpec *pspec;

  dock_item = MATECOMPONENT_DOCK_ITEM (container);
  priv = dock_item->_priv;

  g_return_if_fail (MATECOMPONENT_IS_DOCK_ITEM (container));

  /*  Is this needed ? We hit this assertion when
      calling from matecomponent_dock_item_unfloat()
  */

  g_return_if_fail (GTK_BIN (container)->child == NULL);
  g_assert (priv->child == NULL);

  g_return_if_fail (widget->parent == NULL);

  /* Claim the base reference to the widget, so that it doesn't get owned by the
   * floating window.
   */
  g_object_ref_sink (widget);

  gtk_widget_set_parent_window (widget, dock_item->bin_window);
  dock_item->_priv->child = widget;
  GTK_CONTAINER_CLASS (matecomponent_dock_item_parent_class)->add (container, widget);

  pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (widget),
					"orientation");
  if (pspec != NULL) {
    GValue value = { 0, };

    g_value_init (&value, GTK_TYPE_ORIENTATION);
    g_value_set_enum (&value, dock_item->orientation);
    g_object_set_property (G_OBJECT (widget), "orientation", &value);
    g_value_unset (&value);
  }
}

static void
matecomponent_dock_item_set_floating (MateComponentDockItem *item, gboolean val)
{
  item->is_floating = val;

  /* If there is a child and it supports the 'is_floating' flag
   * set that too.
   */
  if (item->bin.child != NULL &&
      g_object_class_find_property (G_OBJECT_GET_CLASS (item->bin.child),
				    "is_floating") != NULL)
    {
      GValue value = { 0, };
      g_value_init (&value, G_TYPE_BOOLEAN);
      g_value_set_boolean (&value, val);
      g_object_set_property (G_OBJECT (item->bin.child), "is_floating", &value);
      g_value_unset (&value);
    }
}

static void
matecomponent_dock_item_remove (GtkContainer *container,
			 GtkWidget    *widget)
{
  MateComponentDockItem *di;

  g_return_if_fail (MATECOMPONENT_IS_DOCK_ITEM (container));

  di = MATECOMPONENT_DOCK_ITEM (container);

  if (widget == di->_priv->grip)
    {
      gboolean grip_was_visible;

      grip_was_visible = GTK_WIDGET_VISIBLE (widget);

      gtk_widget_unparent (widget);
      di->_priv->grip = NULL;

      if (grip_was_visible)
	gtk_widget_queue_resize (GTK_WIDGET (di));

      return;
    }

  g_return_if_fail (di->_priv->child == widget);
  g_assert (di->_priv->child == di->bin.child);
  g_object_unref (di->_priv->child);
  di->_priv->child = NULL;

  GTK_CONTAINER_CLASS (matecomponent_dock_item_parent_class)->remove (container, widget);
  
}

static void
matecomponent_dock_item_forall (GtkContainer *container,
			 gboolean      include_internals,
			 GtkCallback   callback,
			 gpointer      callback_data)
{
  GtkBin *bin = (GtkBin *) container;
  MateComponentDockItem *di = (MateComponentDockItem *) container;

  g_return_if_fail (callback != NULL);

  if (di->float_window_mapped)
    return; /* The owner of the widgets is the floating window, not the item */

  if (di->_priv->grip)
    callback (di->_priv->grip, callback_data);

  if (bin->child)
    callback (bin->child, callback_data);
}

/**
 * matecomponent_dock_item_construct:
 * @new: a #MateComponentDockItem.
 * @name: Name for the new item
 * @behavior: Behavior for the new item
 *
 * Description: Constructs the @new MateComponentDockItem named @name, with the
 * specified @behavior.
 *
 * Returns: A new MateComponentDockItem widget.
 **/
void
matecomponent_dock_item_construct (MateComponentDockItem *new,
			   const gchar *name,
			   MateComponentDockItemBehavior behavior)
{
  g_return_if_fail (new != NULL);
  g_return_if_fail (MATECOMPONENT_IS_DOCK_ITEM (new));

  new->name = g_strdup (name);
  new->behavior = behavior;

  if (behavior & MATECOMPONENT_DOCK_ITEM_BEH_LOCKED)
    {
      gtk_widget_hide (new->_priv->grip);
      GTK_WIDGET_UNSET_FLAGS (new->_priv->grip, GTK_CAN_FOCUS);
    }
}

/**
 * matecomponent_dock_item_new:
 * @name: Name for the new item
 * @behavior: Behavior for the new item
 *
 * Description: Create a new MateComponentDockItem named @name, with the
 * specified @behavior.
 *
 * Returns: A new MateComponentDockItem widget.
 **/
GtkWidget *
matecomponent_dock_item_new (const gchar *name,
		      MateComponentDockItemBehavior behavior)
{
  MateComponentDockItem *new;

  new = MATECOMPONENT_DOCK_ITEM (g_object_new (matecomponent_dock_item_get_type (), NULL));

  matecomponent_dock_item_construct (new, name, behavior);

  return GTK_WIDGET (new);
}

/**
 * matecomponent_dock_item_get_child:
 * @item: A MateComponentDockItem widget
 *
 * Description: Retrieve the child of @item.
 *
 * Returns: The child of @item.
 **/
GtkWidget *
matecomponent_dock_item_get_child (MateComponentDockItem *item)
{
    g_return_val_if_fail (MATECOMPONENT_IS_DOCK_ITEM (item), NULL);

  if (item->is_floating)
    {

      GList *list;
      GtkWidget *child = GTK_BIN (GTK_WIDGET (item->_priv->float_window))->child;

      list = gtk_container_get_children (GTK_CONTAINER (child));

      while (list)
       {
            GtkWidget *widget = list->data;

            if (GTK_IS_TOOLBAR (widget))
                return widget;

            list = list->next;
       }
       g_assert_not_reached ();
    }

   return GTK_BIN (item)->child;
}

/**
 * matecomponent_dock_item_get_name:
 * @item: A MateComponentDockItem widget.
 *
 * Description: Retrieve the name of @item.
 *
 * Return value: The name of @item as a malloc()ed zero-terminated
 * string.
 **/
gchar *
matecomponent_dock_item_get_name (MateComponentDockItem *item)
{
  return g_strdup (item->name);
}

/**
 * matecomponent_dock_item_set_shadow_type:
 * @dock_item: A MateComponentDockItem widget
 * @type: The shadow type for @dock_item
 *
 * Description: Set the shadow type for @dock_item.
 **/
void
matecomponent_dock_item_set_shadow_type (MateComponentDockItem *dock_item,
				  GtkShadowType   type)
{
  g_return_if_fail (MATECOMPONENT_IS_DOCK_ITEM (dock_item));

  if (dock_item->shadow_type != type)
    {
      dock_item->shadow_type = type;

      if (GTK_WIDGET_DRAWABLE (dock_item))
        gtk_widget_queue_draw (GTK_WIDGET (dock_item));
      gtk_widget_queue_resize (GTK_WIDGET (dock_item));
    }
}

/**
 * matecomponent_dock_item_get_shadow_type:
 * @dock_item: A MateComponentDockItem widget.
 *
 * Description: Retrieve the shadow type of @dock_item.
 *
 * Returns: @dock_item's shadow type.
 **/
GtkShadowType
matecomponent_dock_item_get_shadow_type (MateComponentDockItem  *dock_item)
{
  g_return_val_if_fail (dock_item != NULL, GTK_SHADOW_OUT);
  g_return_val_if_fail (MATECOMPONENT_IS_DOCK_ITEM (dock_item), GTK_SHADOW_OUT);

  return dock_item->shadow_type;
}

/**
 * matecomponent_dock_item_set_orientation:
 * @dock_item: A MateComponentDockItem widget
 * @orientation: New orientation for @dock_item
 *
 * Description: Set the orientation for @dock_item.
 *
 * Returns: %TRUE if the operation succeeds, %FALSE if it fails.
 **/
gboolean
matecomponent_dock_item_set_orientation (MateComponentDockItem *dock_item,
				  GtkOrientation  orientation)
{
  g_return_val_if_fail (dock_item != NULL, FALSE);
  g_return_val_if_fail (MATECOMPONENT_IS_DOCK_ITEM (dock_item), FALSE);

  if (dock_item->orientation != orientation)
    {
      if ((orientation == GTK_ORIENTATION_VERTICAL
           && (dock_item->behavior & MATECOMPONENT_DOCK_ITEM_BEH_NEVER_VERTICAL))
          || (orientation == GTK_ORIENTATION_HORIZONTAL
              && (dock_item->behavior & MATECOMPONENT_DOCK_ITEM_BEH_NEVER_HORIZONTAL)))
        return FALSE;

      dock_item->orientation = orientation;

      if (dock_item->bin.child != NULL) {
	GValue value = { 0, };

	g_value_init (&value, GTK_TYPE_ORIENTATION);
	g_value_set_enum (&value, orientation);
	g_object_set_property (G_OBJECT (dock_item->bin.child),
			       "orientation", &value);
	g_value_unset (&value);
      }
      if (GTK_WIDGET_DRAWABLE (dock_item))
        gtk_widget_queue_draw (GTK_WIDGET (dock_item));
      gtk_widget_queue_resize (GTK_WIDGET (dock_item));

      g_signal_emit (dock_item, dock_item_signals[ORIENTATION_CHANGED], 0, orientation);
    }

  return TRUE;
}

/**
 * matecomponent_dock_item_get_orientation:
 * @dock_item: A MateComponentDockItem widget.
 *
 * Description: Retrieve the orientation of @dock_item.
 *
 * Returns: The current orientation of @dock_item.
 **/
GtkOrientation
matecomponent_dock_item_get_orientation (MateComponentDockItem *dock_item)
{
  g_return_val_if_fail (MATECOMPONENT_IS_DOCK_ITEM (dock_item),
                        GTK_ORIENTATION_HORIZONTAL);

  return dock_item->orientation;
}

/**
 * matecomponent_dock_item_set_behavior:
 * @dock_item: A MateComponentDockItem widget.
 * @behavior: New behavior for @dock_item
 *
 * Description: Set the behavior for @dock_item.
 */
void
matecomponent_dock_item_set_behavior (MateComponentDockItem         *dock_item,
                               MateComponentDockItemBehavior  behavior)
{
  g_return_if_fail (MATECOMPONENT_IS_DOCK_ITEM (dock_item));

  if (dock_item->behavior == behavior)
    return;

  dock_item->behavior = behavior;

  if (behavior & MATECOMPONENT_DOCK_ITEM_BEH_LOCKED)
    matecomponent_dock_item_set_locked (dock_item, TRUE);

  if (behavior & MATECOMPONENT_DOCK_ITEM_BEH_NEVER_FLOATING &&
      dock_item->is_floating)
    matecomponent_dock_item_unfloat (dock_item);

  if (behavior & MATECOMPONENT_DOCK_ITEM_BEH_NEVER_VERTICAL &&
      dock_item->orientation == GTK_ORIENTATION_VERTICAL)
    matecomponent_dock_item_set_orientation (dock_item, GTK_ORIENTATION_HORIZONTAL);

  if (behavior & MATECOMPONENT_DOCK_ITEM_BEH_NEVER_HORIZONTAL &&
      dock_item->orientation == GTK_ORIENTATION_HORIZONTAL)
    matecomponent_dock_item_set_orientation (dock_item, GTK_ORIENTATION_VERTICAL);

  gtk_widget_queue_resize (GTK_WIDGET (dock_item));
}

/**
 * matecomponent_dock_item_get_behavior:
 * @dock_item: A MateComponentDockItem widget.
 *
 * Description: Retrieve the behavior of @dock_item.
 *
 * Returns: The behavior of @dock_item.
 **/
MateComponentDockItemBehavior
matecomponent_dock_item_get_behavior (MateComponentDockItem *dock_item)
{
  g_return_val_if_fail (MATECOMPONENT_IS_DOCK_ITEM (dock_item),
                        MATECOMPONENT_DOCK_ITEM_BEH_NORMAL);

  return dock_item->behavior;
}

/* Private interface.  */

void
matecomponent_dock_item_set_locked (MateComponentDockItem *dock_item,
			     gboolean        locked)
{
  g_return_if_fail (MATECOMPONENT_IS_DOCK_ITEM (dock_item));

  if (locked)
    {
      if (!MATECOMPONENT_DOCK_ITEM_NOT_LOCKED (dock_item))
        return;

      dock_item->behavior |= MATECOMPONENT_DOCK_ITEM_BEH_LOCKED;
      gtk_widget_hide (dock_item->_priv->grip);
    }
  else
    {
      if (MATECOMPONENT_DOCK_ITEM_NOT_LOCKED (dock_item))
        return;

      dock_item->behavior &= ~MATECOMPONENT_DOCK_ITEM_BEH_LOCKED;
      gtk_widget_show (dock_item->_priv->grip);
    }
}

void
matecomponent_dock_item_grab_pointer (MateComponentDockItem *item)
{
  GdkCursor *fleur;
  GdkWindow *gdk_window;

  g_assert (MATECOMPONENT_IS_DOCK_ITEM (item));

  item->in_drag = TRUE;

  fleur = gdk_cursor_new_for_display
	  (gtk_widget_get_display (GTK_WIDGET (item)),
	   GDK_FLEUR);

  if (item->is_floating) {
        /* This is not working well...can drag only
           in the small region of the grip and the first button.
           To be precise, it just sucks that we can't get a decent
           grab on the grip itself
        */

        gdk_window = GTK_WIDGET (item->_priv->float_window)->window;
  } else  {
        gdk_window = item->bin_window;
  }
  /* Hm, not sure this is the right thing to do, but it seems to work.  */
  while (gdk_pointer_grab (gdk_window,
                           FALSE,
                           (GDK_BUTTON1_MOTION_MASK |
                            GDK_POINTER_MOTION_HINT_MASK |
                            GDK_BUTTON_RELEASE_MASK),
                           NULL,
                           fleur,
                           GDK_CURRENT_TIME) != 0);


  gdk_cursor_unref (fleur);
}

gboolean
matecomponent_dock_item_detach (MateComponentDockItem *item, gint x, gint y)
{
  MateComponentDockItemPrivate *priv;
  GtkWidget *widget;

  priv = item->_priv;

  if (item->behavior & MATECOMPONENT_DOCK_ITEM_BEH_NEVER_FLOATING)
    return FALSE;

  item->float_x = x;
  item->float_y = y;

  matecomponent_dock_item_set_floating (item, TRUE);

  if (!GTK_WIDGET_REALIZED (item))
    return TRUE;

  g_assert (priv->child != NULL);
  g_assert (priv->grip != NULL);

  if (!priv->float_window_hidden)
    {
      if (item->orientation == GTK_ORIENTATION_HORIZONTAL)
        priv->float_window_box = gtk_vbox_new (FALSE, 0);
      else
        priv->float_window_box = gtk_hbox_new (FALSE, 0);

   /*

    <michael> the size allocate etc. stuff looked dubious to me
    <michael> we shouldn't be overriding size_allocate really when
              we re-parent the grip into the floating toolbar box
    <michael> it should all just work in that case, since there's no
              need to knobble the GTK_BIN stuff,
    <arvind>  by not overriding, the grip is not allocated
    <michael> hmm,
    <michael> it should be a child of the container,
    <michael> we should override,
    <michael> but not do a signal connection for the float_window

   */

      gtk_container_add (GTK_CONTAINER (priv->float_window), priv->float_window_box);

      widget = priv->grip; /* container_remove() will make priv->grip NULL, so we save it here */
      g_object_ref (priv->grip);
      gtk_container_remove (GTK_CONTAINER (item), priv->grip);
      priv->grip = widget;
      gtk_box_pack_start (GTK_BOX (priv->float_window_box), priv->grip, FALSE, FALSE, 0);
      g_object_unref (priv->grip);

      widget = priv->child;
      g_object_ref (priv->child);
      gtk_container_remove (GTK_CONTAINER (item), priv->child);
      priv->child = widget;
      gtk_box_pack_start (GTK_BOX (priv->float_window_box), priv->child, FALSE, FALSE, 0);
      g_object_unref (priv->child);
    }

  gtk_window_move (GTK_WINDOW (priv->float_window), x, y);
  gtk_widget_show_all (GTK_WIDGET (priv->float_window));

  gdk_window_set_events (priv->float_window->window, gdk_window_get_events (priv->float_window->window) | GDK_BUTTON_PRESS_MASK);

  item->float_window_mapped = TRUE;
  priv->float_window_hidden = FALSE;

  gdk_window_hide (GTK_WIDGET (item)->window);
  gtk_widget_queue_draw (GTK_WIDGET (item));

  gtk_window_set_transient_for (GTK_WINDOW (priv->float_window),
                                (GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (item)))));

  g_signal_emit (item, dock_item_signals [DOCK_DETACH], 0);

  return TRUE;
}

void
matecomponent_dock_item_unfloat (MateComponentDockItem *item)
{
  MateComponentDockItemPrivate *priv;
  gboolean is_realized;
  GtkWidget *widget;

  priv = item->_priv;

  g_assert (item->float_window_mapped);
  g_assert (priv->child != NULL);
  g_assert (priv->grip != NULL);

  is_realized = GTK_WIDGET_REALIZED (item);

  /* Grip */
  g_object_ref (priv->grip);
  gtk_container_remove (GTK_CONTAINER (priv->float_window_box), priv->grip);

  if (is_realized)
    gtk_widget_set_parent_window (priv->grip, item->bin_window);

  gtk_widget_set_parent (priv->grip, GTK_WIDGET (item));
  g_object_unref (priv->grip);

  /* Child */  
  widget = priv->child;
  g_object_ref (widget);
  g_assert (item->bin.child == NULL);
  gtk_container_remove (GTK_CONTAINER (priv->float_window_box), widget);
  priv->child = NULL;

  if (is_realized)
    gtk_widget_set_parent_window (widget, item->bin_window);

  /* priv->child must be NULL at this point, or matecomponent_dock_item_add() barfs */
  gtk_container_add (GTK_CONTAINER (item), widget);
  
  g_assert (item->bin.child == widget);
  g_assert (priv->child == widget);
  g_object_unref (widget);

  /* Window */

  gtk_widget_destroy (priv->float_window_box);
  priv->float_window_box = NULL;

  gtk_widget_hide (GTK_WIDGET (item->_priv->float_window));
  gdk_window_show (GTK_WIDGET (item)->window);

  item->float_window_mapped = FALSE;
  item->_priv->float_window_hidden = FALSE;

  matecomponent_dock_item_set_floating (item, FALSE);

  gtk_widget_queue_resize (GTK_WIDGET (item));
}

void
matecomponent_dock_item_attach (MateComponentDockItem *item,
			 GtkWidget *parent,
			 gint x, gint y)
{
  if (GTK_WIDGET (item)->parent != GTK_WIDGET (parent))
    {
      gdk_window_move_resize (GTK_WIDGET (item)->window, -1, -1, 0, 0);
      g_object_ref (item);
      gtk_container_remove (GTK_CONTAINER (GTK_WIDGET (item)->parent), GTK_WIDGET (item));
      gtk_container_add (GTK_CONTAINER (parent), GTK_WIDGET (item));
      g_object_unref (item);

      if (item->is_floating)
	matecomponent_dock_item_unfloat (item);

      matecomponent_dock_item_grab_pointer (item);
    }
}

void
matecomponent_dock_item_drag_floating (MateComponentDockItem *item, gint x, gint y)
{
  if (item->is_floating)
    {
      gtk_window_move (GTK_WINDOW (item->_priv->float_window), x, y);

      item->float_x = x;
      item->float_y = y;
    }
}

void
matecomponent_dock_item_handle_size_request (MateComponentDockItem *item,
                                     GtkRequisition *requisition)
{
  GtkBin *bin;
  GtkContainer *container;

  bin = GTK_BIN (item);
  container = GTK_CONTAINER (item);

  if (bin->child != NULL)
    gtk_widget_size_request (bin->child, requisition);

  if (item->orientation == GTK_ORIENTATION_HORIZONTAL)
    requisition->width += DRAG_HANDLE_SIZE;
  else
    requisition->height += DRAG_HANDLE_SIZE;

  requisition->width += container->border_width * 2;
  requisition->height += container->border_width * 2;
}

void
matecomponent_dock_item_get_floating_position (MateComponentDockItem *item,
					gint *x, gint *y)
{
  if (GTK_WIDGET_REALIZED (item) && item->is_floating)
    gtk_window_get_position (GTK_WINDOW (item->_priv->float_window), x, y);
  else
    {
      *x = item->float_x;
      *y = item->float_y;
    }
}

GtkWidget *
matecomponent_dock_item_get_grip (MateComponentDockItem *item)
{
  g_return_val_if_fail (MATECOMPONENT_IS_DOCK_ITEM (item), NULL);

  if (item->behavior & MATECOMPONENT_DOCK_ITEM_BEH_LOCKED)
    return NULL;
  else
    return item->_priv->grip;
}

