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/*
* glade-clipboard.c - An object for handling Cut/Copy/Paste.
*
* Copyright (C) 2001 The GNOME Foundation.
*
* Author(s):
* Archit Baweja <bighead@users.sourceforge.net>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
#include "config.h"
/**
* SECTION:glade-clipboard
* @Short_Description: A list of #GladeWidget objects not in any #GladeProject.
*
* The #GladeClipboard is a singleton and is an accumulative shelf
* of all cut or copied #GladeWidget in the application. A #GladeWidget
* can be cut from one #GladeProject and pasted to another.
*/
#include <glib/gi18n-lib.h>
#include "glade.h"
#include "glade-clipboard.h"
#include "glade-widget.h"
#include "glade-placeholder.h"
#include "glade-project.h"
struct _GladeClipboardPrivate
{
GList *widgets; /* A list of GladeWidget's on the clipboard */
gboolean has_selection; /* TRUE if clipboard has selection */
};
enum
{
PROP_0,
PROP_HAS_SELECTION,
N_PROPERTIES
};
static GParamSpec *properties[N_PROPERTIES];
G_DEFINE_TYPE_WITH_PRIVATE (GladeClipboard, glade_clipboard, G_TYPE_OBJECT);
static void
glade_project_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GladeClipboard *clipboard = GLADE_CLIPBOARD (object);
switch (prop_id)
{
case PROP_HAS_SELECTION:
g_value_set_boolean (value, clipboard->priv->has_selection);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
glade_clipboard_class_init (GladeClipboardClass * klass)
{
GObjectClass *object_class;
object_class = G_OBJECT_CLASS (klass);
object_class->get_property = glade_project_get_property;
properties[PROP_HAS_SELECTION] =
g_param_spec_boolean ("has-selection",
"Has Selection",
"Whether clipboard has a selection of items to paste",
FALSE,
G_PARAM_READABLE);
/* Install all properties */
g_object_class_install_properties (object_class, N_PROPERTIES, properties);
}
static void
glade_clipboard_init (GladeClipboard *clipboard)
{
clipboard->priv = glade_clipboard_get_instance_private (clipboard);
clipboard->priv->widgets = NULL;
clipboard->priv->has_selection = FALSE;
}
static void
glade_clipboard_set_has_selection (GladeClipboard *clipboard,
gboolean has_selection)
{
if (clipboard->priv->has_selection != has_selection)
{
clipboard->priv->has_selection = has_selection;
g_object_notify_by_pspec (G_OBJECT (clipboard), properties[PROP_HAS_SELECTION]);
}
}
/**
* glade_clipboard_get_has_selection:
* @clipboard: a #GladeClipboard
*
* Returns: TRUE if this clipboard has selected items to paste.
*/
gboolean
glade_clipboard_get_has_selection (GladeClipboard *clipboard)
{
g_return_val_if_fail (GLADE_IS_CLIPBOARD (clipboard), FALSE);
return clipboard->priv->has_selection;
}
/**
* glade_clipboard_widgets:
* @clipboard: a #GladeClipboard
*
* Returns: (element-type GladeWidget) (transfer none): a #GList of #GladeWidgets
*/
GList *
glade_clipboard_widgets (GladeClipboard *clipboard)
{
g_return_val_if_fail (GLADE_IS_CLIPBOARD (clipboard), NULL);
return clipboard->priv->widgets;
}
/**
* glade_clipboard_new:
*
* Returns: a new #GladeClipboard object
*/
GladeClipboard *
glade_clipboard_new (void)
{
return GLADE_CLIPBOARD (g_object_new (GLADE_TYPE_CLIPBOARD, NULL));
}
/**
* glade_clipboard_add:
* @clipboard: a #GladeClipboard
* @widgets: (element-type GladeWidget): a #GList of #GladeWidgets
*
* Adds @widgets to @clipboard.
* This increases the reference count of each #GladeWidget in @widgets.
*/
void
glade_clipboard_add (GladeClipboard *clipboard, GList *widgets)
{
GladeWidget *widget;
GList *list;
g_return_if_fail (GLADE_IS_CLIPBOARD (clipboard));
glade_clipboard_clear (clipboard);
/*
* Add the widgets to the list of children.
*/
for (list = widgets; list && list->data; list = list->next)
{
widget = list->data;
clipboard->priv->widgets =
g_list_prepend (clipboard->priv->widgets, g_object_ref_sink (G_OBJECT (widget)));
}
glade_clipboard_set_has_selection (clipboard, TRUE);
}
/**
* glade_clipboard_clear:
* @clipboard: a #GladeClipboard
*
* Removes all widgets from the @clipboard.
*/
void
glade_clipboard_clear (GladeClipboard *clipboard)
{
GladeWidget *widget;
GList *list;
g_return_if_fail (GLADE_IS_CLIPBOARD (clipboard));
for (list = clipboard->priv->widgets; list && list->data; list = list->next)
{
widget = list->data;
g_object_unref (G_OBJECT (widget));
}
clipboard->priv->widgets =
(g_list_free (clipboard->priv->widgets), NULL);
glade_clipboard_set_has_selection (clipboard, FALSE);
}
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