/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Copyright (C) 2002 Joaquín Cuenca Abela
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Authors:
* Joaquín Cuenca Abela <e98cuenc@yahoo.com>
* Archit Baweja <bighead@users.sourceforge.net>
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
/**
* SECTION:glade-command
* @Short_Description: An event filter to implement the Undo/Redo stack.
*
* The Glade Command api allows us to view user actions as items and execute
* and undo those items; each #GladeProject has its own Undo/Redo stack.
*/
#include <gtk/gtk.h>
#include <string.h>
#include <glib/gi18n-lib.h>
#include "glade.h"
#include "glade-project.h"
#include "glade-xml-utils.h"
#include "glade-widget.h"
#include "glade-palette.h"
#include "glade-command.h"
#include "glade-property.h"
#include "glade-property-class.h"
#include "glade-debug.h"
#include "glade-placeholder.h"
#include "glade-clipboard.h"
#include "glade-signal.h"
#include "glade-app.h"
#include "glade-fixed.h"
/* Concerning placeholders: we do not hold any reference to placeholders,
* placeholders that are supplied by the backend are not reffed, placeholders
* that are created by glade-command are temporarily owned by glade-command
* untill they are added to a container; in which case it belongs to GTK+
* and the backend (but I prefer to think of it as the backend).
*/
typedef struct {
GladeWidget *widget;
GladeWidget *parent;
GladeProject *project;
GladePlaceholder *placeholder;
gboolean props_recorded;
GList *pack_props;
gchar *special_type;
gulong handler_id;
} CommandData;
static GObjectClass *parent_class = NULL;
/* Group description used for the current group
*/
static gchar *gc_group_description = NULL;
/* Use an id to avoid grouping together consecutive groups
*/
static gint gc_group_id = 1;
/* Groups can be grouped together, push/pop must balance (duh!)
*/
static gint gc_group_depth = 0;
#define MAKE_TYPE(func, type, parent) \
GType \
func ## _get_type (void) \
{ \
static GType cmd_type = 0; \
\
if (!cmd_type) \
{ \
static const GTypeInfo info = \
{ \
sizeof (type ## Class), \
(GBaseInitFunc) NULL, \
(GBaseFinalizeFunc) NULL, \
(GClassInitFunc) func ## _class_init, \
(GClassFinalizeFunc) NULL, \
NULL, \
sizeof (type), \
0, \
(GInstanceInitFunc) NULL \
}; \
\
cmd_type = g_type_register_static (parent, #type, &info, 0); \
} \
\
return cmd_type; \
} \
static void
glade_command_finalize (GObject *obj)
{
GladeCommand *cmd = (GladeCommand *) obj;
g_return_if_fail (cmd != NULL);
if (cmd->description)
g_free (cmd->description);
/* Call the base class dtor */
(* G_OBJECT_CLASS (parent_class)->finalize) (obj);
}
static gboolean
glade_command_unifies_impl (GladeCommand *this_cmd, GladeCommand *other_cmd)
{
return FALSE;
}
static void
glade_command_collapse_impl (GladeCommand *this_cmd, GladeCommand *other_cmd)
{
g_return_if_reached ();
}
static void
glade_command_class_init (GladeCommandClass *klass)
{
GObjectClass* object_class;
object_class = G_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->finalize = glade_command_finalize;
klass->undo = NULL;
klass->execute = NULL;
klass->unifies = glade_command_unifies_impl;
klass->collapse = glade_command_collapse_impl;
}
/* compose the _get_type function for GladeCommand */
MAKE_TYPE (glade_command, GladeCommand, G_TYPE_OBJECT)
#define GLADE_MAKE_COMMAND(type, func) \
static gboolean \
func ## _undo (GladeCommand *me); \
static gboolean \
func ## _execute (GladeCommand *me); \
static void \
func ## _finalize (GObject *object); \
static gboolean \
func ## _unifies (GladeCommand *this_cmd, GladeCommand *other_cmd); \
static void \
func ## _collapse (GladeCommand *this_cmd, GladeCommand *other_cmd); \
static void \
func ## _class_init (gpointer parent_tmp, gpointer notused) \
{ \
GladeCommandClass *parent = parent_tmp; \
GObjectClass* object_class; \
object_class = G_OBJECT_CLASS (parent); \
parent->undo = func ## _undo; \
parent->execute = func ## _execute; \
parent->unifies = func ## _unifies; \
parent->collapse = func ## _collapse; \
object_class->finalize = func ## _finalize; \
} \
typedef struct { \
GladeCommandClass cmd; \
} type ## Class; \
static MAKE_TYPE(func, type, GLADE_TYPE_COMMAND)
/**
* glade_command_execute:
* @command: A #GladeCommand
*
* Executes @command
*
* Returns: whether the command was successfully executed
*/
gboolean
glade_command_execute (GladeCommand *command)
{
g_return_val_if_fail (GLADE_IS_COMMAND (command), FALSE);
return GLADE_COMMAND_GET_CLASS (command)->execute (command);
}
/**
* glade_command_undo:
* @command: A #GladeCommand
*
* Undo the effects of @command
*
* Returns whether the command was successfully reversed
*/
gboolean
glade_command_undo (GladeCommand *command)
{
g_return_val_if_fail (GLADE_IS_COMMAND (command), FALSE);
return GLADE_COMMAND_GET_CLASS (command)->undo (command);
}
/**
* glade_command_unifies:
* @command: A #GladeCommand
* @other: another #GladeCommand
*
* Checks whether @command and @other can be unified
* to make one single command.
*
* Returns: whether they can be unified.
*/
gboolean
glade_command_unifies (GladeCommand *command,
GladeCommand *other)
{
g_return_val_if_fail (command, FALSE);
return GLADE_COMMAND_GET_CLASS (command)->unifies (command, other);
}
/**
* glade_command_collapse:
* @command: A #GladeCommand
* @other: another #GladeCommand
*
* Merges @other into @command, so that @command now
* covers both commands and @other can be dispensed with.
*/
void
glade_command_collapse (GladeCommand *command,
GladeCommand *other)
{
g_return_if_fail (command);
GLADE_COMMAND_GET_CLASS (command)->collapse (command, other);
}
/**
* glade_command_push_group:
* @fmt: The collective desctiption of the command group.
* only the description of the first group on the
* stack is used when embedding groups.
* @...: args to the format string.
*
* Marks the begining of a group.
*/
void
glade_command_push_group (const gchar *fmt, ...)
{
va_list args;
g_return_if_fail (fmt);
/* Only use the description for the first group.
*/
if (gc_group_depth++ == 0)
{
va_start (args, fmt);
gc_group_description = g_strdup_vprintf (fmt, args);
va_end (args);
}
}
/**
* glade_command_pop_group:
*
* Mark the end of a command group.
*/
void
glade_command_pop_group (void)
{
if (gc_group_depth-- == 1)
{
gc_group_description = (g_free (gc_group_description), NULL);
gc_group_id++;
}
if (gc_group_depth < 0)
g_critical ("Unbalanced group stack detected in %s\n",
G_GNUC_PRETTY_FUNCTION);
}
static void
glade_command_check_group (GladeCommand *cmd)
{
g_return_if_fail (GLADE_IS_COMMAND (cmd));
if (gc_group_description)
{
cmd->description =
(g_free (cmd->description), g_strdup (gc_group_description));
cmd->group_id = gc_group_id;
}
}
/**************************************************/
/******* GLADE_COMMAND_SET_PROPERTY *******/
/**************************************************/
/* create a new GladeCommandSetProperty class. Objects of this class will
* encapsulate a "set property" operation */
typedef struct {
GladeCommand parent;
gboolean set_once;
gboolean undo;
GList *sdata;
} GladeCommandSetProperty;
/* standard macros */
GLADE_MAKE_COMMAND (GladeCommandSetProperty, glade_command_set_property);
#define GLADE_COMMAND_SET_PROPERTY_TYPE (glade_command_set_property_get_type ())
#define GLADE_COMMAND_SET_PROPERTY(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GLADE_COMMAND_SET_PROPERTY_TYPE, GladeCommandSetProperty))
#define GLADE_COMMAND_SET_PROPERTY_CLASS(k) (G_TYPE_CHECK_CLASS_CAST ((k), GLADE_COMMAND_SET_PROPERTY_TYPE, GladeCommandSetPropertyClass))
#define GLADE_IS_COMMAND_SET_PROPERTY(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GLADE_COMMAND_SET_PROPERTY_TYPE))
#define GLADE_IS_COMMAND_SET_PROPERTY_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), GLADE_COMMAND_SET_PROPERTY_TYPE))
/* Undo the last "set property command" */
static gboolean
glade_command_set_property_undo (GladeCommand *cmd)
{
return glade_command_set_property_execute (cmd);
}
/*
* Execute the set property command and revert it. IE, after the execution of
* this function cmd will point to the undo action
*/
static gboolean
glade_command_set_property_execute (GladeCommand *cmd)
{
GladeCommandSetProperty* me = (GladeCommandSetProperty*) cmd;
GList *l;
g_return_val_if_fail (me != NULL, FALSE);
if (me->set_once != FALSE)
glade_property_push_superuser ();
for (l = me->sdata; l; l = l->next)
{
GValue new_value = { 0, };
GCSetPropData *sdata = l->data;
g_value_init (&new_value, G_VALUE_TYPE (sdata->new_value));
if (me->undo)
g_value_copy (sdata->old_value, &new_value);
else
g_value_copy (sdata->new_value, &new_value);
#if 0
{
gchar *str =
glade_property_class_make_string_from_gvalue
(sdata->property->klass, &new_value);
g_print ("Setting %s property of %s to %s (sumode: %d)\n",
sdata->property->klass->id,
sdata->property->widget->name,
str, glade_property_superuser ());
g_free (str);
}
#endif
/* Packing properties need to be refreshed here since
* they are reset when they get added to containers.
*/
if (sdata->property->klass->packing)
{
GladeProperty *tmp_prop;
tmp_prop = glade_widget_get_pack_property
(sdata->property->widget, sdata->property->klass->id);
if (sdata->property != tmp_prop)
{
g_object_unref (sdata->property);
sdata->property = g_object_ref (tmp_prop);
}
}
glade_property_set_value (sdata->property, &new_value);
if (!me->set_once)
{
/* If some verify functions didnt pass on
* the first go.. we need to record the actual
* properties here.
*/
g_value_copy (sdata->property->value,
sdata->new_value);
}
g_value_unset (&new_value);
}
if (me->set_once != FALSE)
glade_property_pop_superuser ();
me->set_once = TRUE;
me->undo = !me->undo;
return TRUE;
}
static void
glade_command_set_property_finalize (GObject *obj)
{
GladeCommandSetProperty *me;
GList *l;
me = GLADE_COMMAND_SET_PROPERTY (obj);
for (l = me->sdata; l; l = l->next)
{
GCSetPropData *sdata = l->data;
if (sdata->property)
g_object_unref (G_OBJECT (sdata->property));
if (sdata->old_value)
{
if (G_VALUE_TYPE (sdata->old_value) != 0)
g_value_unset (sdata->old_value);
g_free (sdata->old_value);
}
if (G_VALUE_TYPE (sdata->new_value) != 0)
g_value_unset (sdata->new_value);
g_free (sdata->new_value);
}
glade_command_finalize (obj);
}
static gboolean
glade_command_set_property_unifies (GladeCommand *this_cmd, GladeCommand *other_cmd)
{
GladeCommandSetProperty *cmd1, *cmd2;
GCSetPropData *pdata1, *pdata2;
GList *list, *l;
if (GLADE_IS_COMMAND_SET_PROPERTY (this_cmd) &&
GLADE_IS_COMMAND_SET_PROPERTY (other_cmd))
{
cmd1 = (GladeCommandSetProperty*) this_cmd;
cmd2 = (GladeCommandSetProperty*) other_cmd;
if (g_list_length (cmd1->sdata) !=
g_list_length (cmd2->sdata))
return FALSE;
for (list = cmd1->sdata; list; list = list->next)
{
pdata1 = list->data;
for (l = cmd2->sdata; l; l = l->next)
{
pdata2 = l->data;
if (pdata1->property->widget == pdata2->property->widget &&
glade_property_class_match (pdata1->property->klass,
pdata2->property->klass))
break;
}
/* If both lists are the same length, and one class type
* is not found in the other list, then we cant unify.
*/
if (l == NULL)
return FALSE;
}
return TRUE;
}
return FALSE;
}
static void
glade_command_set_property_collapse (GladeCommand *this_cmd, GladeCommand *other_cmd)
{
GladeCommandSetProperty *cmd1, *cmd2;
GCSetPropData *pdata1, *pdata2;
GList *list, *l;
g_return_if_fail (GLADE_IS_COMMAND_SET_PROPERTY (this_cmd) &&
GLADE_IS_COMMAND_SET_PROPERTY (other_cmd));
cmd1 = (GladeCommandSetProperty*) this_cmd;
cmd2 = (GladeCommandSetProperty*) other_cmd;
for (list = cmd1->sdata; list; list = list->next)
{
pdata1 = list->data;
for (l = cmd2->sdata; l; l = l->next)
{
pdata2 = l->data;
if (glade_property_class_match (pdata1->property->klass,
pdata2->property->klass))
{
/* Merge the GCSetPropData structs manually here
*/
g_value_copy (pdata2->new_value, pdata1->new_value);
break;
}
}
}
/* Set the description
*/
g_free (this_cmd->description);
this_cmd->description = other_cmd->description;
other_cmd->description = NULL;
glade_app_update_ui ();
}
#define MAX_UNDO_MENU_ITEM_VALUE_LEN 10
static gchar *
glade_command_set_property_description (GladeCommandSetProperty *me)
{
GCSetPropData *sdata;
gchar *description = NULL;
gchar *value_name;
g_assert (me->sdata);
if (g_list_length (me->sdata) > 1)
description = g_strdup_printf (_("Setting multiple properties"));
else
{
sdata = me->sdata->data;
value_name = glade_property_class_make_string_from_gvalue (sdata->property->klass,
sdata->new_value);
if (!value_name || strlen (value_name) > MAX_UNDO_MENU_ITEM_VALUE_LEN
|| strchr (value_name, '_')) {
description = g_strdup_printf (_("Setting %s of %s"),
sdata->property->klass->name,
sdata->property->widget->name);
} else {
description = g_strdup_printf (_("Setting %s of %s to %s"),
sdata->property->klass->name,
sdata->property->widget->name, value_name);
}
g_free (value_name);
}
return description;
}
void
glade_command_set_properties_list (GladeProject *project, GList *props)
{
GladeCommandSetProperty *me;
GladeCommand *cmd;
GCSetPropData *sdata;
GList *list;
g_return_if_fail (GLADE_IS_PROJECT (project));
g_return_if_fail (props);
me = (GladeCommandSetProperty*) g_object_new (GLADE_COMMAND_SET_PROPERTY_TYPE, NULL);
cmd = GLADE_COMMAND (me);
/* Ref all props */
for (list = props; list; list = list->next)
{
sdata = list->data;
g_object_ref (G_OBJECT (sdata->property));
}
me->sdata = props;
cmd->description = glade_command_set_property_description (me);
glade_command_check_group (GLADE_COMMAND (me));
/* Push onto undo stack only if it executes successfully. */
if (glade_command_set_property_execute (GLADE_COMMAND (me)))
glade_project_push_undo (GLADE_PROJECT (project),
GLADE_COMMAND (me));
else
/* No leaks on my shift! */
g_object_unref (G_OBJECT (me));
}
void
glade_command_set_properties (GladeProperty *property, const GValue *old_value, const GValue *new_value, ...)
{
GCSetPropData *sdata;
GladeProperty *prop;
GValue *ovalue, *nvalue;
GList *list = NULL;
va_list vl;
g_return_if_fail (GLADE_IS_PROPERTY (property));
/* Add first set */
sdata = g_new (GCSetPropData, 1);
sdata->property = property;
sdata->old_value = g_new0 (GValue, 1);
sdata->new_value = g_new0 (GValue, 1);
g_value_init (sdata->old_value, G_VALUE_TYPE (old_value));
g_value_init (sdata->new_value, G_VALUE_TYPE (new_value));
g_value_copy (old_value, sdata->old_value);
g_value_copy (new_value, sdata->new_value);
list = g_list_prepend (list, sdata);
va_start (vl, new_value);
while ((prop = va_arg (vl, GladeProperty *)) != NULL)
{
ovalue = va_arg (vl, GValue *);
nvalue = va_arg (vl, GValue *);
g_assert (GLADE_IS_PROPERTY (prop));
g_assert (G_IS_VALUE (ovalue));
g_assert (G_IS_VALUE (nvalue));
sdata = g_new (GCSetPropData, 1);
sdata->property = g_object_ref (G_OBJECT (prop));
sdata->old_value = g_new0 (GValue, 1);
sdata->new_value = g_new0 (GValue, 1);
g_value_init (sdata->old_value, G_VALUE_TYPE (ovalue));
g_value_init (sdata->new_value, G_VALUE_TYPE (nvalue));
g_value_copy (ovalue, sdata->old_value);
g_value_copy (nvalue, sdata->new_value);
list = g_list_prepend (list, sdata);
}
va_end (vl);
glade_command_set_properties_list (property->widget->project, list);
}
void
glade_command_set_property_value (GladeProperty *property, const GValue* pvalue)
{
/* Dont generate undo/redo items for unchanging property values.
*/
if (glade_property_equals_value (property, pvalue))
return;
glade_command_set_properties (property, property->value, pvalue, NULL);
}
void
glade_command_set_property (GladeProperty *property, ...)
{
GValue *value;
va_list args;
g_return_if_fail (GLADE_IS_PROPERTY (property));
va_start (args, property);
value = glade_property_class_make_gvalue_from_vl (property->klass, args);
va_end (args);
glade_command_set_property_value (property, value);
}
/**************************************************/
/******* GLADE_COMMAND_SET_NAME *******/
/**************************************************/
/* create a new GladeCommandSetName class. Objects of this class will
* encapsulate a "set name" operation */
typedef struct {
GladeCommand parent;
GladeWidget *widget;
gchar *old_name;
gchar *name;
} GladeCommandSetName;
/* standard macros */
GLADE_MAKE_COMMAND (GladeCommandSetName, glade_command_set_name);
#define GLADE_COMMAND_SET_NAME_TYPE (glade_command_set_name_get_type ())
#define GLADE_COMMAND_SET_NAME(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GLADE_COMMAND_SET_NAME_TYPE, GladeCommandSetName))
#define GLADE_COMMAND_SET_NAME_CLASS(k) (G_TYPE_CHECK_CLASS_CAST ((k), GLADE_COMMAND_SET_NAME_TYPE, GladeCommandSetNameClass))
#define GLADE_IS_COMMAND_SET_NAME(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GLADE_COMMAND_SET_NAME_TYPE))
#define GLADE_IS_COMMAND_SET_NAME_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), GLADE_COMMAND_SET_NAME_TYPE))
/* Undo the last "set name command" */
static gboolean
glade_command_set_name_undo (GladeCommand *cmd)
{
return glade_command_set_name_execute (cmd);
}
/*
* Execute the set name command and revert it. Ie, after the execution of this
* function cmd will point to the undo action
*/
static gboolean
glade_command_set_name_execute (GladeCommand *cmd)
{
GladeCommandSetName* me = GLADE_COMMAND_SET_NAME (cmd);
char* tmp;
g_return_val_if_fail (me != NULL, TRUE);
g_return_val_if_fail (me->widget != NULL, TRUE);
g_return_val_if_fail (me->name != NULL, TRUE);
glade_widget_set_name (me->widget, me->name);
tmp = me->old_name;
me->old_name = me->name;
me->name = tmp;
return TRUE;
}
static void
glade_command_set_name_finalize (GObject *obj)
{
GladeCommandSetName* me;
g_return_if_fail (GLADE_IS_COMMAND_SET_NAME (obj));
me = GLADE_COMMAND_SET_NAME (obj);
g_free (me->old_name);
g_free (me->name);
glade_command_finalize (obj);
}
static gboolean
glade_command_set_name_unifies (GladeCommand *this_cmd, GladeCommand *other_cmd)
{
GladeCommandSetName *cmd1;
GladeCommandSetName *cmd2;
if (GLADE_IS_COMMAND_SET_NAME (this_cmd) && GLADE_IS_COMMAND_SET_NAME (other_cmd))
{
cmd1 = GLADE_COMMAND_SET_NAME (this_cmd);
cmd2 = GLADE_COMMAND_SET_NAME (other_cmd);
return (cmd1->widget == cmd2->widget);
}
return FALSE;
}
static void
glade_command_set_name_collapse (GladeCommand *this_cmd, GladeCommand *other_cmd)
{
GladeCommandSetName *nthis = GLADE_COMMAND_SET_NAME (this_cmd);
GladeCommandSetName *nother = GLADE_COMMAND_SET_NAME (other_cmd);
g_return_if_fail (GLADE_IS_COMMAND_SET_NAME (this_cmd) && GLADE_IS_COMMAND_SET_NAME (other_cmd));
g_free (nthis->old_name);
nthis->old_name = nother->old_name;
nother->old_name = NULL;
g_free (this_cmd->description);
this_cmd->description = g_strdup_printf (_("Renaming %s to %s"), nthis->name, nthis->old_name);
glade_app_update_ui ();
}
/* this function takes the ownership of name */
void
glade_command_set_name (GladeWidget *widget, const gchar* name)
{
GladeCommandSetName *me;
GladeCommand *cmd;
g_return_if_fail (GLADE_IS_WIDGET (widget));
g_return_if_fail (name != NULL);
/* Dont spam the queue with false name changes.
*/
if (!strcmp (widget->name, name))
return;
me = g_object_new (GLADE_COMMAND_SET_NAME_TYPE, NULL);
cmd = GLADE_COMMAND (me);
me->widget = widget;
me->name = g_strdup (name);
me->old_name = g_strdup (widget->name);
cmd->description = g_strdup_printf (_("Renaming %s to %s"), me->old_name, me->name);
glade_command_check_group (GLADE_COMMAND (me));
if (glade_command_set_name_execute (GLADE_COMMAND (me)))
glade_project_push_undo (GLADE_PROJECT (widget->project), GLADE_COMMAND (me));
else
g_object_unref (G_OBJECT (me));
}
/******************************************************************************
*
* add/remove
*
* These canonical commands add/remove a widget list to/from the project.
*
*****************************************************************************/
typedef struct {
GladeCommand parent;
GladeProject *project;
GList *widgets;
gboolean add;
gboolean from_clipboard;
} GladeCommandAddRemove;
GLADE_MAKE_COMMAND (GladeCommandAddRemove, glade_command_add_remove);
#define GLADE_COMMAND_ADD_REMOVE_TYPE (glade_command_add_remove_get_type ())
#define GLADE_COMMAND_ADD_REMOVE(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GLADE_COMMAND_ADD_REMOVE_TYPE, GladeCommandAddRemove))
#define GLADE_COMMAND_ADD_REMOVE_CLASS(k) (G_TYPE_CHECK_CLASS_CAST ((k), GLADE_COMMAND_ADD_REMOVE_TYPE, GladeCommandAddRemoveClass))
#define GLADE_IS_COMMAND_ADD_REMOVE(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GLADE_COMMAND_ADD_REMOVE_TYPE))
#define GLADE_IS_COMMAND_ADD_REMOVE_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), GLADE_COMMAND_ADD_REMOVE_TYPE))
static void
glade_command_placeholder_destroyed (GtkObject *object, CommandData *cdata)
{
if (GTK_OBJECT (cdata->placeholder) == object)
{
cdata->placeholder = NULL;
cdata->handler_id = 0;
}
}
static void
glade_command_placeholder_connect (CommandData *cdata,
GladePlaceholder *placeholder)
{
g_assert (cdata && cdata->placeholder == NULL);
/* Something like a no-op with no placeholder */
if ((cdata->placeholder = placeholder) == NULL)
return;
cdata->handler_id = g_signal_connect
(placeholder, "destroy",
G_CALLBACK (glade_command_placeholder_destroyed), cdata);
}
/**
* glade_command_add:
* @widgets: a #Glist
* @parent: a #GladeWidget
* @placeholder: a #GladePlaceholder
* @pasting: whether we are pasting an existing widget or creating a new one.
*
* Performs an add command on all widgets in @widgets to @parent, possibly
* replacing @placeholder (note toplevels dont need a parent; the active project
* will be used when pasting toplevel objects).
* Pasted widgets will persist packing properties from thier cut/copy source
* while newly added widgets will prefer packing defaults.
*
*/
static void
glade_command_add (GList *widgets,
GladeWidget *parent,
GladePlaceholder *placeholder,
gboolean pasting)
{
GladeCommandAddRemove *me;
CommandData *cdata;
GladeWidget *widget = NULL;
GList *l, *list, *children, *placeholders = NULL;
GtkWidget *child;
g_return_if_fail (widgets && widgets->data);
g_return_if_fail (parent == NULL || GLADE_IS_WIDGET (parent));
me = g_object_new (GLADE_COMMAND_ADD_REMOVE_TYPE, NULL);
me->add = TRUE;
me->from_clipboard = pasting;
/* Things can go wrong in this function if the dataset is inacurate,
* we make no real attempt here to recover, just g_critical() and
* fix the bugs as they pop up.
*/
widget = GLADE_WIDGET (widgets->data);
if (placeholder && GTK_IS_WINDOW (widget->object) == FALSE)
{
GladeWidget *some_widget = glade_placeholder_get_parent (placeholder);
me->project = glade_widget_get_project (some_widget);
}
else me->project = glade_app_get_project();
GLADE_COMMAND (me)->description =
g_strdup_printf (_("Add %s"), g_list_length (widgets) == 1 ?
widget->name : _("multiple"));
for (list = widgets; list && list->data; list = list->next)
{
widget = list->data;
cdata = g_new0 (CommandData, 1);
if (widget->internal)
g_critical ("Internal widget in Add");
/* Widget */
cdata->widget = g_object_ref (G_OBJECT (widget));
/* Parent */
if (parent == NULL)
cdata->parent = glade_widget_get_parent (widget);
else if (placeholder && GTK_IS_WINDOW (widget->object) == FALSE)
cdata->parent = glade_placeholder_get_parent (placeholder);
else if (GTK_IS_WINDOW (widget->object) == FALSE)
cdata->parent = parent;
if (cdata->parent == NULL && GTK_IS_WINDOW (widget->object) == FALSE)
g_critical ("Parentless non GtkWindow widget in Add");
/* Placeholder */
if (placeholder != NULL && g_list_length (widgets) == 1)
{
glade_command_placeholder_connect (cdata, placeholder);
}
else if (cdata->parent &&
glade_widget_placeholder_relation (cdata->parent, widget))
{
GtkContainer *cont = GTK_CONTAINER (cdata->parent->object);
child = glade_util_get_placeholder_from_pointer (cont);
if (child && g_list_find (placeholders, child) == NULL)
{
placeholders = g_list_append (placeholders, child);
glade_command_placeholder_connect
(cdata, GLADE_PLACEHOLDER (child));
}
else if ((children = glade_widget_adaptor_get_children
(cdata->parent->adaptor, cdata->parent->object)) != NULL)
{
for (l = children; l && l->data; l = l->next)
{
child = l->data;
/* Find a placeholder for this child */
if (GLADE_IS_PLACEHOLDER (child) &&
g_list_find (placeholders, child) == NULL)
{
placeholders = g_list_append (placeholders, child);
glade_command_placeholder_connect
(cdata, GLADE_PLACEHOLDER (child));
break;
}
}
g_list_free (children);
}
}
/*
* Save a copy of the original project so we can forward that to glade-project,
* who'll copy in any resource files needed by any properties that are getting
* cross-project pasted.
*/
cdata->project = cdata->widget->project;
me->widgets = g_list_prepend (me->widgets, cdata);
}
glade_command_check_group (GLADE_COMMAND (me));
/*
* Push it onto the undo stack only on success
*/
if (glade_command_add_remove_execute (GLADE_COMMAND (me)))
glade_project_push_undo (glade_app_get_project(), GLADE_COMMAND (me));
else
g_object_unref (G_OBJECT (me));
if (placeholders)
g_list_free (placeholders);
} /* end of glade_command_add() */
/**
* glade_command_remove:
* @widgets: a #GList of #GladeWidgets
* @return_placeholders: whether or not to return a list of placehodlers
*
* Performs a remove command on all widgets in @widgets from @parent.
*/
static void
glade_command_remove (GList *widgets)
{
GladeCommandAddRemove *me;
GladeWidget *widget = NULL;
CommandData *cdata;
GtkWidget *placeholder;
GList *list, *l;
g_return_if_fail (widgets != NULL);
me = g_object_new (GLADE_COMMAND_ADD_REMOVE_TYPE, NULL);
me->add = FALSE;
me->from_clipboard = FALSE;
/* internal children cannot be deleted. Notify the user. */
for (list = widgets; list && list->data; list = list->next)
{
widget = list->data;
if (widget->internal)
{
glade_util_ui_message (glade_app_get_window(),
GLADE_UI_WARN,
_("You cannot remove a widget internal to a composite widget."));
return;
}
}
me->project = glade_widget_get_project (widget);
for (list = widgets; list && list->data; list = list->next)
{
widget = list->data;
cdata = g_new0 (CommandData, 1);
cdata->widget = g_object_ref (G_OBJECT (widget));
cdata->parent = glade_widget_get_parent (widget);
cdata->project = glade_widget_get_project (widget);
if (widget->internal)
g_critical ("Internal widget in Remove");
if (cdata->parent != NULL &&
glade_widget_placeholder_relation
(cdata->parent, cdata->widget))
{
placeholder = glade_placeholder_new ();
glade_command_placeholder_connect
(cdata, GLADE_PLACEHOLDER (placeholder));
}
me->widgets = g_list_prepend (me->widgets, cdata);
/* Dont record props in create_execute (whether or not we actually
* record any props here
*/
cdata->props_recorded = TRUE;
/* Record packing props if not deleted from the clipboard */
if (me->from_clipboard == FALSE)
{
for (l = widget->packing_properties; l; l = l->next)
cdata->pack_props =
g_list_prepend (cdata->pack_props,
glade_property_dup (GLADE_PROPERTY (l->data),
cdata->widget));
}
}
if (g_list_length (widgets) == 1)
GLADE_COMMAND (me)->description =
g_strdup_printf (_("Remove %s"),
GLADE_WIDGET (widgets->data)->name);
else
GLADE_COMMAND (me)->description =
g_strdup_printf (_("Remove multiple"));
g_assert (widget);
glade_command_check_group (GLADE_COMMAND (me));
if (glade_command_add_remove_execute (GLADE_COMMAND (me)))
glade_project_push_undo (GLADE_PROJECT (widget->project), GLADE_COMMAND (me));
else
g_object_unref (G_OBJECT (me));
} /* end of glade_command_remove() */
static void
glade_command_transfer_props (GladeWidget *gnew, GList *saved_props)
{
GList *l;
for (l = saved_props; l; l = l->next)
{
GladeProperty *prop, *sprop = l->data;
prop = glade_widget_get_pack_property (gnew, sprop->klass->id);
if (prop && sprop->klass->transfer_on_paste &&
glade_property_class_match (prop->klass, sprop->klass))
glade_property_set_value (prop, sprop->value);
}
}
static gboolean
glade_command_add_execute (GladeCommandAddRemove *me)
{
GladeProject *active_project = glade_app_get_project ();
CommandData *cdata;
GList *list, *l, *saved_props;
gchar *special_child_type;
if (me->widgets)
{
/* XXX FIXME: Selection here should be specific to the project
* related to this command
*/
glade_app_selection_clear (FALSE);
for (list = me->widgets; list && list->data; list = list->next)
{
cdata = list->data;
saved_props = NULL;
if (cdata->parent != NULL)
{
/* Prepare special-child-type for the paste. */
if (me->from_clipboard)
{
if (cdata->props_recorded == FALSE)
{
/* Clear it the first time */
g_object_set_data (cdata->widget->object,
"special-child-type", NULL);
}
else
{
g_object_set_data_full (cdata->widget->object,
"special-child-type",
g_strdup (cdata->special_type),
g_free);
}
}
/* Only transfer properties when they are from the clipboard,
* otherwise prioritize packing defaults.
*/
if (me->from_clipboard)
{
saved_props =
glade_widget_dup_properties (cdata->widget->packing_properties, FALSE);
glade_widget_set_packing_properties (cdata->widget, cdata->parent);
}
/* glade_command_paste ganauntees that if
* there we are pasting to a placeholder,
* there is only one widget.
*/
if (cdata->placeholder)
{
glade_widget_replace
(cdata->parent,
G_OBJECT (cdata->placeholder),
cdata->widget->object);
}
else
{
glade_widget_add_child (cdata->parent,
cdata->widget,
cdata->props_recorded == FALSE);
}
glade_command_transfer_props (cdata->widget, saved_props);
if (saved_props)
{
g_list_foreach (saved_props, (GFunc)g_object_unref, NULL);
g_list_free (saved_props);
}
/* Now that we've added, apply any packing props if nescisary. */
for (l = cdata->pack_props; l; l = l->next)
{
GValue value = { 0, };
GladeProperty *saved_prop = l->data;
GladeProperty *widget_prop =
glade_widget_get_pack_property (cdata->widget,
saved_prop->klass->id);
glade_property_get_value (saved_prop, &value);
glade_property_set_value (widget_prop, &value);
g_value_unset (&value);
}
if (cdata->props_recorded == FALSE)
{
/* Save the packing properties after the initial paste.
* (this will be the defaults returned by the container
* implementation after initially adding them).
*
* Otherwise this recorded marker was set when cutting
*/
g_assert (cdata->pack_props == NULL);
for (l = cdata->widget->packing_properties;
l; l = l->next)
cdata->pack_props =
g_list_prepend
(cdata->pack_props,
glade_property_dup
(GLADE_PROPERTY (l->data),
cdata->widget));
/* Record the special-type here after replacing */
if ((special_child_type =
g_object_get_data (cdata->widget->object,
"special-child-type")) != NULL)
{
g_free (cdata->special_type);
cdata->special_type = g_strdup (special_child_type);
}
/* Mark the properties as recorded */
cdata->props_recorded = TRUE;
}
}
/* Toplevels get pasted to the active project */
if (me->from_clipboard &&
GTK_WIDGET_TOPLEVEL (cdata->widget->object))
glade_project_add_object
(active_project, cdata->project,
cdata->widget->object);
else
glade_project_add_object(me->project, cdata->project, cdata->widget->object);
glade_app_selection_add(cdata->widget->object, FALSE);
glade_widget_show (cdata->widget);
}
glade_app_selection_changed ();
}
return TRUE;
} /* end of glade_command_add_execute() */
static gboolean
glade_command_remove_execute (GladeCommandAddRemove *me)
{
CommandData *cdata;
GList *list;
for (list = me->widgets; list && list->data; list = list->next)
{
cdata = list->data;
if (cdata->parent)
{
if (cdata->placeholder)
glade_widget_replace(cdata->parent, cdata->widget->object, G_OBJECT (cdata->placeholder));
else
glade_widget_remove_child (cdata->parent, cdata->widget);
}
glade_project_remove_object(GLADE_PROJECT (cdata->widget->project), cdata->widget->object);
glade_widget_hide (cdata->widget);
}
return TRUE;
}
/*
* Execute the cmd and revert it. Ie, after the execution of this
* function cmd will point to the undo action
*/
static gboolean
glade_command_add_remove_execute (GladeCommand *cmd)
{
GladeCommandAddRemove *me = (GladeCommandAddRemove*) cmd;
gboolean retval;
if (me->add)
retval = glade_command_add_execute (me);
else
retval = glade_command_remove_execute (me);
me->add = !me->add;
return retval;
}
static gboolean
glade_command_add_remove_undo (GladeCommand *cmd)
{
return glade_command_add_remove_execute (cmd);
}
static void
glade_command_add_remove_finalize (GObject *obj)
{
GladeCommandAddRemove *cmd;
CommandData *cdata;
GList *list;
g_return_if_fail (GLADE_IS_COMMAND_ADD_REMOVE (obj));
cmd = GLADE_COMMAND_ADD_REMOVE (obj);
for (list = cmd->widgets; list && list->data; list = list->next)
{
cdata = list->data;
if (cdata->placeholder)
{
if (cdata->handler_id)
g_signal_handler_disconnect (cdata->placeholder,
cdata->handler_id);
if (GTK_OBJECT_FLOATING (cdata->placeholder))
gtk_widget_destroy (GTK_WIDGET (cdata->placeholder));
}
if (cdata->widget)
g_object_unref (G_OBJECT (cdata->widget));
}
g_list_free (cmd->widgets);
glade_command_finalize (obj);
}
static gboolean
glade_command_add_remove_unifies (GladeCommand *this_cmd, GladeCommand *other_cmd)
{
return FALSE;
}
static void
glade_command_add_remove_collapse (GladeCommand *this_cmd, GladeCommand *other_cmd)
{
g_return_if_reached ();
}
/******************************************************************************
*
* clipboard_add/clipboard_remove
*
* These canonical commands add/remove a widget list to/from the clipboard.
*
*****************************************************************************/
typedef struct {
GladeCommand parent;
GList *widgets;
gboolean add;
} GladeCommandClipboardAddRemove;
GLADE_MAKE_COMMAND (GladeCommandClipboardAddRemove, glade_command_clipboard_add_remove);
#define GLADE_COMMAND_CLIPBOARD_ADD_REMOVE_TYPE (glade_command_clipboard_add_remove_get_type ())
#define GLADE_COMMAND_CLIPBOARD_ADD_REMOVE(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GLADE_COMMAND_CLIPBOARD_ADD_REMOVE_TYPE, GladeCommandClipboardAddRemove))
#define GLADE_COMMAND_CLIPBOARD_ADD_REMOVE_CLASS(k) (G_TYPE_CHECK_CLASS_CAST ((k), GLADE_COMMAND_CLIPBOARD_ADD_REMOVE_TYPE, GladeCommandClipboardAddRemoveClass))
#define GLADE_IS_COMMAND_CLIPBOARD_ADD_REMOVE(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GLADE_COMMAND_CLIPBOARD_ADD_REMOVE_TYPE))
#define GLADE_IS_COMMAND_CLIPBOARD_ADD_REMOVE_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), GLADE_COMMAND_CLIPBOARD_ADD_REMOVE_TYPE))
static void
glade_command_clipboard_add_remove_common (GList *widgets, gboolean add)
{
GladeCommandClipboardAddRemove *me;
GladeWidget *widget = NULL;
GList *list;
g_return_if_fail(widgets && widgets->data);
me = g_object_new(GLADE_COMMAND_CLIPBOARD_ADD_REMOVE_TYPE, NULL);
for (list = widgets; list && list->data; list = list->next)
{
widget = g_object_ref(G_OBJECT(list->data));
me->widgets = g_list_prepend (me->widgets, widget);
}
me->add = add;
if (add)
{
if (g_list_length (widgets) == 1)
GLADE_COMMAND(me)->description = g_strdup_printf (_("Clipboard add %s"),
widget->name);
else
GLADE_COMMAND(me)->description = g_strdup (_("Clipboard add multiple"));
}
else
{
if (g_list_length (widgets) == 1)
GLADE_COMMAND(me)->description = g_strdup_printf (_("Clipboard remove %s"),
widget->name);
else
GLADE_COMMAND(me)->description = g_strdup (_("Clipboard remove multiple"));
}
glade_command_check_group(GLADE_COMMAND(me));
if (glade_command_clipboard_add_remove_execute(GLADE_COMMAND(me)))
{
glade_project_push_undo(glade_app_get_project(), GLADE_COMMAND(me));
}
else
{
g_object_unref(G_OBJECT(me));
}
}
/**
* glade_command_clipboard_add:
* @widgets: a #GList
*
* Performs an add command on all widgets in @widgets to the clipboard.
*/
static void
glade_command_clipboard_add(GList *widgets)
{
glade_command_clipboard_add_remove_common(widgets, TRUE);
}
/**
* glade_command_clipboard_remove:
* @widgets: a #GList
*
* Performs a remove command on all widgets in @widgets from the clipboard.
*/
/* not used anywhere */
#if 0
static void
glade_command_clipboard_remove (GList *widgets)
{
glade_command_clipboard_add_remove_common(widgets, FALSE);
}
#endif
static gboolean
glade_command_clipboard_add_execute (GladeCommandClipboardAddRemove *me)
{
GList *list, *widgets = NULL;
for (list = me->widgets; list && list->data; list = list->next)
{
widgets = g_list_prepend(widgets, list->data);
}
if (widgets)
{
glade_clipboard_add(glade_app_get_clipboard(), widgets);
g_list_free(widgets);
}
return TRUE;
}
static gboolean
glade_command_clipboard_remove_execute (GladeCommandClipboardAddRemove *me)
{
GList *list, *widgets = NULL;
for (list = me->widgets; list && list->data; list = list->next)
{
widgets = g_list_prepend(widgets, list->data);
}
if (widgets)
{
glade_clipboard_remove(glade_app_get_clipboard(), widgets);
g_list_free(widgets);
}
return TRUE;
}
static gboolean
glade_command_clipboard_add_remove_execute (GladeCommand *cmd)
{
GladeCommandClipboardAddRemove *me = (GladeCommandClipboardAddRemove*) cmd;
gboolean retval;
if (me->add)
retval = glade_command_clipboard_add_execute (me);
else
retval = glade_command_clipboard_remove_execute (me);
me->add = !me->add;
return retval;
}
static gboolean
glade_command_clipboard_add_remove_undo (GladeCommand *cmd)
{
return glade_command_clipboard_add_remove_execute (cmd);
}
static void
glade_command_clipboard_add_remove_finalize (GObject *obj)
{
GladeCommandClipboardAddRemove *cmd;
GList *list;
g_return_if_fail (GLADE_IS_COMMAND_CLIPBOARD_ADD_REMOVE (obj));
cmd = GLADE_COMMAND_CLIPBOARD_ADD_REMOVE (obj);
for (list = cmd->widgets; list && list->data; list = list->next)
if (list->data)
g_object_unref(G_OBJECT(list->data));
g_list_free (cmd->widgets);
glade_command_finalize (obj);
}
static gboolean
glade_command_clipboard_add_remove_unifies (GladeCommand *this_cmd, GladeCommand *other_cmd)
{
return FALSE;
}
static void
glade_command_clipboard_add_remove_collapse (GladeCommand *this_cmd, GladeCommand *other_cmd)
{
g_return_if_reached ();
}
/******************************************************************************
*
* The following are command aliases. Their implementations are the actual
* glade commands.
*
*****************************************************************************/
/**
* glade_command_create:
* @adaptor: A #GladeWidgetAdaptor
* @placeholder: the placeholder which will be substituted by the widget
* @project: the project his widget belongs to.
*
* Creates a new widget using @adaptor and put in place of the @placeholder
* in the @project
*
* Returns the newly created widget.
*/
GladeWidget*
glade_command_create(GladeWidgetAdaptor *adaptor, GladeWidget *parent, GladePlaceholder *placeholder, GladeProject *project)
{
GladeWidget *widget;
GList *widgets = NULL;
g_return_val_if_fail (GLADE_IS_WIDGET_ADAPTOR (adaptor), NULL);
g_return_val_if_fail (GLADE_IS_PROJECT (project), NULL);
if (GWA_IS_TOPLEVEL(adaptor) == FALSE)
g_return_val_if_fail (GLADE_IS_WIDGET(parent), NULL);
/* attempt to create the widget -- widget may be null, e.g. the user clicked cancel on a query */
widget = glade_widget_adaptor_create_widget(adaptor, TRUE, "parent", parent, "project", project, NULL);
if (widget == NULL)
{
return NULL;
}
widgets = g_list_prepend(widgets, widget);
glade_command_push_group(_("Create %s"), g_list_length (widgets) == 1 ? widget->name : _("multiple"));
glade_command_add(widgets, parent, placeholder, FALSE);
glade_command_pop_group();
if (widgets)
g_list_free(widgets);
return widget;
}
/**
* glade_command_delete:
* @widgets: a #GList of #GladeWidgets
*
* Performs a delete command on the list of widgets.
*/
void
glade_command_delete(GList *widgets)
{
GladeWidget *widget;
g_return_if_fail (widgets != NULL);
widget = widgets->data;
glade_command_push_group(_("Delete %s"), g_list_length (widgets) == 1 ? widget->name : _("multiple"));
glade_command_remove(widgets);
glade_command_pop_group();
}
/**
* glade_command_cut:
* @widgets: a #GList of #GladeWidgets
*
* Removes the list of widgets and adds them to the clipboard.
*/
void
glade_command_cut(GList *widgets)
{
GladeWidget *widget;
GList *l;
g_return_if_fail (widgets != NULL);
for (l = widgets; l; l = l->next)
g_object_set_data (G_OBJECT (l->data), "glade-command-was-cut", GINT_TO_POINTER (TRUE));
widget = widgets->data;
glade_command_push_group(_("Cut %s"), g_list_length (widgets) == 1 ? widget->name : _("multiple"));
glade_command_remove(widgets);
glade_command_clipboard_add(widgets);
glade_command_pop_group();
}
/**
* glade_command_copy:
* @widgets: a #GList of #GladeWidgets
*
* Copies the list of widgets and adds them to the clipboard.
*/
void
glade_command_copy(GList *widgets)
{
GList *list, *copied_widgets = NULL;
GladeWidget *copied_widget = NULL;
g_return_if_fail (widgets != NULL);
for (list = widgets; list && list->data; list = list->next)
{
copied_widget = glade_widget_dup(list->data, FALSE);
copied_widgets = g_list_prepend(copied_widgets, copied_widget);
}
glade_command_push_group(_("Copy %s"), g_list_length (widgets) == 1 ? copied_widget->name : _("multiple"));
glade_command_clipboard_add(copied_widgets);
glade_command_pop_group();
if (copied_widgets)
g_list_free(copied_widgets);
}
/**
* glade_command_paste:
* @widgets: a #GList of #GladeWidget
* @parent: a #GladeWidget
* @placeholder: a #GladePlaceholder
*
* Performs a paste command on all widgets in @widgets to @parent, possibly
* replacing @placeholder (note toplevels dont need a parent; the active project
* will be used when pasting toplevel objects).
*/
void
glade_command_paste(GList *widgets, GladeWidget *parent, GladePlaceholder *placeholder)
{
GList *list, *copied_widgets = NULL;
GladeWidget *copied_widget = NULL;
gboolean exact;
g_return_if_fail (widgets != NULL);
for (list = widgets; list && list->data; list = list->next)
{
exact = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (list->data), "glade-command-was-cut"));
copied_widget = glade_widget_dup(list->data, exact);
copied_widgets = g_list_prepend(copied_widgets, copied_widget);
}
glade_command_push_group(_("Paste %s"), g_list_length (widgets) == 1 ? copied_widget->name : _("multiple"));
glade_command_add(copied_widgets, parent, placeholder, TRUE);
glade_command_pop_group();
if (copied_widgets)
g_list_free(copied_widgets);
}
/**
* glade_command_dnd:
* @widgets: a #GList of #GladeWidget
* @parent: a #GladeWidget
* @placeholder: a #GladePlaceholder
*
* Performs a drag-n-drop command, i.e. removes the list of widgets and adds them
* to the new parent, possibly replacing @placeholder (note toplevels dont need a
* parent; the active project will be used when pasting toplevel objects).
*/
void
glade_command_dnd(GList *widgets, GladeWidget *parent, GladePlaceholder *placeholder)
{
GladeWidget *widget;
g_return_if_fail (widgets != NULL);
widget = widgets->data;
glade_command_push_group(_("Drag-n-Drop from %s to %s"),
parent->name, g_list_length (widgets) == 1 ? widget->name : _("multiple"));
glade_command_remove(widgets);
glade_command_add(widgets, parent, placeholder, TRUE);
glade_command_pop_group();
}
/*********************************************************/
/******* GLADE_COMMAND_ADD_SIGNAL *******/
/*********************************************************/
/* create a new GladeCommandAddRemoveChangeSignal class. Objects of this class will
* encapsulate an "add or remove signal handler" operation */
typedef enum {
GLADE_ADD,
GLADE_REMOVE,
GLADE_CHANGE
} GladeAddType;
typedef struct {
GladeCommand parent;
GladeWidget *widget;
GladeSignal *signal;
GladeSignal *new_signal;
GladeAddType type;
} GladeCommandAddSignal;
/* standard macros */
GLADE_MAKE_COMMAND (GladeCommandAddSignal, glade_command_add_signal);
#define GLADE_COMMAND_ADD_SIGNAL_TYPE (glade_command_add_signal_get_type ())
#define GLADE_COMMAND_ADD_SIGNAL(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GLADE_COMMAND_ADD_SIGNAL_TYPE, GladeCommandAddSignal))
#define GLADE_COMMAND_ADD_SIGNAL_CLASS(k) (G_TYPE_CHECK_CLASS_CAST ((k), GLADE_COMMAND_ADD_SIGNAL_TYPE, GladeCommandAddSignalClass))
#define GLADE_IS_COMMAND_ADD_SIGNAL(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GLADE_COMMAND_ADD_SIGNAL_TYPE))
#define GLADE_IS_COMMAND_ADD_SIGNAL_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), GLADE_COMMAND_ADD_SIGNAL_TYPE))
static void
glade_command_add_signal_finalize (GObject *obj)
{
GladeCommandAddSignal *cmd = GLADE_COMMAND_ADD_SIGNAL (obj);
g_object_unref (cmd->widget);
if (cmd->signal)
glade_signal_free (cmd->signal);
if (cmd->new_signal)
glade_signal_free (cmd->new_signal);
glade_command_finalize (obj);
}
static gboolean
glade_command_add_signal_undo (GladeCommand *this_cmd)
{
return glade_command_add_signal_execute (this_cmd);
}
static gboolean
glade_command_add_signal_execute (GladeCommand *this_cmd)
{
GladeCommandAddSignal *cmd = GLADE_COMMAND_ADD_SIGNAL (this_cmd);
GladeSignal *temp;
switch (cmd->type)
{
case GLADE_ADD:
glade_widget_add_signal_handler (cmd->widget, cmd->signal);
cmd->type = GLADE_REMOVE;
break;
case GLADE_REMOVE:
glade_widget_remove_signal_handler (cmd->widget, cmd->signal);
cmd->type = GLADE_ADD;
break;
case GLADE_CHANGE:
glade_widget_change_signal_handler (cmd->widget,
cmd->signal,
cmd->new_signal);
temp = cmd->signal;
cmd->signal = cmd->new_signal;
cmd->new_signal = temp;
break;
default:
break;
}
return TRUE;
}
static gboolean
glade_command_add_signal_unifies (GladeCommand *this_cmd, GladeCommand *other_cmd)
{
return FALSE;
}
static void
glade_command_add_signal_collapse (GladeCommand *this_cmd, GladeCommand *other_cmd)
{
g_return_if_reached ();
}
static void
glade_command_add_remove_change_signal (GladeWidget *glade_widget,
const GladeSignal *signal,
const GladeSignal *new_signal,
GladeAddType type)
{
GladeCommandAddSignal *me = GLADE_COMMAND_ADD_SIGNAL
(g_object_new (GLADE_COMMAND_ADD_SIGNAL_TYPE, NULL));
GladeCommand *cmd = GLADE_COMMAND (me);
/* we can only add/remove a signal to a widget that has been wrapped by a GladeWidget */
g_assert (glade_widget != NULL);
g_assert (glade_widget->project != NULL);
me->widget = g_object_ref(glade_widget);
me->type = type;
me->signal = glade_signal_clone (signal);
me->new_signal = new_signal ?
glade_signal_clone (new_signal) : NULL;
cmd->description =
g_strdup_printf (type == GLADE_ADD ? _("Add signal handler %s") :
type == GLADE_REMOVE ? _("Remove signal handler %s") :
_("Change signal handler %s"),
signal->handler);
glade_command_check_group (GLADE_COMMAND (me));
if (glade_command_add_signal_execute (cmd))
glade_project_push_undo (GLADE_PROJECT (glade_widget->project), cmd);
else
g_object_unref (G_OBJECT (me));
}
/**
* glade_command_add_signal:
* @glade_widget: a #GladeWidget
* @signal: a #GladeSignal
*
* TODO: write me
*/
void
glade_command_add_signal (GladeWidget *glade_widget, const GladeSignal *signal)
{
glade_command_add_remove_change_signal
(glade_widget, signal, NULL, GLADE_ADD);
}
/**
* glade_command_remove_signal:
* @glade_widget: a #GladeWidget
* @signal: a #GladeSignal
*
* TODO: write me
*/
void
glade_command_remove_signal (GladeWidget *glade_widget, const GladeSignal *signal)
{
glade_command_add_remove_change_signal
(glade_widget, signal, NULL, GLADE_REMOVE);
}
/**
* glade_command_change_signal:
* @glade_widget: a #GladeWidget
* @old_signal: a #GladeSignal
* @new_signal: a #GladeSignal
*
* TODO: write me
*/
void
glade_command_change_signal (GladeWidget *glade_widget,
const GladeSignal *old_signal,
const GladeSignal *new_signal)
{
glade_command_add_remove_change_signal
(glade_widget, old_signal, new_signal, GLADE_CHANGE);
}
/******************************************************************************
*
* set i18n metadata
*
* This command sets the i18n metadata on a label property.
*
*****************************************************************************/
typedef struct {
GladeCommand parent;
GladeProperty *property;
gboolean translatable;
gboolean has_context;
gchar *comment;
gboolean old_translatable;
gboolean old_has_context;
gchar *old_comment;
} GladeCommandSetI18n;
GLADE_MAKE_COMMAND (GladeCommandSetI18n, glade_command_set_i18n);
#define GLADE_COMMAND_SET_I18N_TYPE (glade_command_set_i18n_get_type ())
#define GLADE_COMMAND_SET_I18N(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GLADE_COMMAND_SET_I18N_TYPE, GladeCommandSetI18n))
#define GLADE_COMMAND_SET_I18N_CLASS(k) (G_TYPE_CHECK_CLASS_CAST ((k), GLADE_COMMAND_SET_I18N_TYPE, GladeCommandSetI18nClass))
#define GLADE_IS_COMMAND_SET_I18N(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GLADE_COMMAND_SET_I18N_TYPE))
#define GLADE_IS_COMMAND_SET_I18N_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), GLADE_COMMAND_SET_I18N_TYPE))
static gboolean
glade_command_set_i18n_execute(GladeCommand *cmd)
{
GladeCommandSetI18n *me = (GladeCommandSetI18n *)cmd;
gboolean temp_translatable;
gboolean temp_has_context;
gchar *temp_comment;
/* sanity check */
g_return_val_if_fail (me != NULL, TRUE);
g_return_val_if_fail (me->property != NULL, TRUE);
/* set the new values in the property */
glade_property_i18n_set_translatable(me->property, me->translatable);
glade_property_i18n_set_has_context(me->property, me->has_context);
glade_property_i18n_set_comment(me->property, me->comment);
/* swap the current values with the old values to prepare for undo */
temp_translatable = me->translatable;
temp_has_context = me->has_context;
temp_comment = me->comment;
me->translatable = me->old_translatable;
me->has_context = me->old_has_context;
me->comment = me->old_comment;
me->old_translatable = temp_translatable;
me->old_has_context = temp_has_context;
me->old_comment = temp_comment;
return TRUE;
}
static gboolean
glade_command_set_i18n_undo(GladeCommand *cmd)
{
return glade_command_set_i18n_execute(cmd);
}
static void
glade_command_set_i18n_finalize(GObject *obj)
{
GladeCommandSetI18n *me;
g_return_if_fail(GLADE_IS_COMMAND_SET_I18N(obj));
me = GLADE_COMMAND_SET_I18N(obj);
g_free (me->comment);
g_free (me->old_comment);
glade_command_finalize(obj);
}
static gboolean
glade_command_set_i18n_unifies (GladeCommand *this_cmd, GladeCommand *other_cmd)
{
GladeCommandSetI18n *cmd1;
GladeCommandSetI18n *cmd2;
if (GLADE_IS_COMMAND_SET_I18N (this_cmd) && GLADE_IS_COMMAND_SET_I18N (other_cmd))
{
cmd1 = GLADE_COMMAND_SET_I18N (this_cmd);
cmd2 = GLADE_COMMAND_SET_I18N (other_cmd);
return (cmd1->property == cmd2->property);
}
return FALSE;
}
static void
glade_command_set_i18n_collapse (GladeCommand *this_cmd, GladeCommand *other_cmd)
{
/* this command is the one that will be used for an undo of the sequence of like commands */
GladeCommandSetI18n *this = GLADE_COMMAND_SET_I18N (this_cmd);
/* the other command contains the values that will be used for a redo */
GladeCommandSetI18n *other = GLADE_COMMAND_SET_I18N (other_cmd);
g_return_if_fail (GLADE_IS_COMMAND_SET_I18N (this_cmd) && GLADE_IS_COMMAND_SET_I18N (other_cmd));
/* adjust this command to contain, as its old values, the other command's current values */
this->old_translatable = other->old_translatable;
this->old_has_context = other->old_has_context;
g_free (this->old_comment);
this->old_comment = other->old_comment;
other->old_comment = NULL;
glade_app_update_ui ();
}
/**
* glade_command_set_i18n:
* @property: a #GladeProperty
* @translatable: a #gboolean
* @has_context: a #gboolean
* @comment: a #const gchar *
*
* Sets the i18n data on the property.
*/
void
glade_command_set_i18n (GladeProperty *property, gboolean translatable, gboolean has_context, const gchar *comment)
{
GladeCommandSetI18n *me;
g_return_if_fail(property);
/* check that something changed before continuing with the command */
if (translatable == property->i18n_translatable &&
has_context == property->i18n_has_context &&
((comment == NULL && property->i18n_comment == NULL) ||
(comment && property->i18n_comment && !strcmp(property->i18n_comment, comment))))
return;
/* load up the command */
me = g_object_new(GLADE_COMMAND_SET_I18N_TYPE, NULL);
me->property = property;
me->translatable = translatable;
me->has_context = has_context;
me->comment = g_strdup(comment);
me->old_translatable = property->i18n_translatable;
me->old_has_context = property->i18n_has_context;
me->old_comment = g_strdup(property->i18n_comment);
GLADE_COMMAND(me)->description = g_strdup_printf(_("Setting i18n metadata"));;
glade_command_check_group(GLADE_COMMAND(me));
/* execute the command and push it on the stack if successful */
if (glade_command_set_i18n_execute(GLADE_COMMAND(me)))
{
glade_project_push_undo(glade_app_get_project(), GLADE_COMMAND(me));
}
else
{
g_object_unref(G_OBJECT(me));
}
}
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