gtkbfc/gtkbfc.c

/* this file is publiched under the gnu gpl license, version 3 or any later */

#define _GNU_SOURCE

#include <dlfcn.h>
#include <glib.h>
#include <gtk/gtk.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

static const char gtkbfc_version_string[] = "gtkbfc version 0.1";

static char *helper = "/etc/gtkbfc-helper";

static GObject *(*old_constructor) (GType type, guint n_construct_properties, GObjectConstructParam *construct_properties);

static gchar *last_path;

#if 0
# define DEBUG(stmt) stmt;
#else
# define DEBUG(stmt)
#endif

/////////////////////////////////////////////////////////////////////////////

gchar *gtk_file_chooser_get_filename (GtkFileChooser *chooser)
{
  DEBUG ((printf ("gtk_file_chooser_get_filename<%s>\n", last_path)))
  return g_strdup (last_path ? last_path : "/nonex1st4nt");
}

gboolean gtk_file_chooser_select_filename (GtkFileChooser *chooser, const char *filename)
{
  return 1;
}

void gtk_file_chooser_unselect_all (GtkFileChooser *chooser)
{
}

gboolean gtk_file_chooser_set_filename (GtkFileChooser *chooser, const char *filename)
{
  return 1;
}

void gtk_file_chooser_set_current_name (GtkFileChooser *chooser, const char *filename)
{
}

GSList *gtk_file_chooser_get_filenames (GtkFileChooser *chooser)
{
  GSList *rv = 0;
  rv = g_slist_prepend (rv, gtk_file_chooser_get_filename (chooser));
  return rv;
}

gboolean gtk_file_chooser_set_current_folder (GtkFileChooser *chooser, const gchar *folder)
{
  return 1;
}

gchar * gtk_file_chooser_get_current_folder (GtkFileChooser *chooser)
{
  DEBUG ((printf ("gtk_file_chooser_get_current_folder\n")))
  return g_strdup ("/tmp/gtkbfc");
}

/////////////////////////////////////////////////////////////////////////////

static const gchar *
from_uri (const gchar *uri)
{
  const gchar *rv = uri;

  if (!strncmp (uri, "file:///", sizeof ("file:///") - 1))
    rv += sizeof ("file:///") - 1;

  return rv;
}

static gchar *
to_uri (gchar *file)
{
  gchar *rv = NULL;

  if (file)
    {
      GString *str = g_string_new ("file://");
      str = g_string_append (str, file);
      rv = g_strdup (str->str);
      g_string_free (str, TRUE);
      g_free (file);
    }

  return rv;
}

static GSList *
to_uris (GSList *files)
{
  GSList *item = files;

  for (; item; item = g_slist_next (item))
    {
      GString *str = g_string_new ("file://");
      gchar *cur = item->data;

      str = g_string_append (str, cur);
      item->data = g_string_free (str, FALSE);
      g_free (cur);
    }

  return files;
}

gchar *gtk_file_chooser_get_uri (GtkFileChooser *chooser)
{
  gchar *uri = to_uri(gtk_file_chooser_get_filename (chooser));
  DEBUG ((printf ("gtk_file_chooser_get_uri<%s>\n", uri)))
  return uri;
}

gboolean gtk_file_chooser_set_uri (GtkFileChooser *chooser, const char *uri)
{
  return gtk_file_chooser_set_filename (chooser, from_uri (uri));
}

GSList *gtk_file_chooser_get_uris (GtkFileChooser *chooser)
{
  return to_uris (gtk_file_chooser_get_filenames (chooser));
}

gboolean gtk_file_chooser_set_current_folder_uri(GtkFileChooser *chooser, const gchar *uri)
{
  return gtk_file_chooser_set_current_folder (chooser, from_uri (uri));
}

gchar *gtk_file_chooser_get_current_folder_uri (GtkFileChooser *chooser)
{
  return to_uri (gtk_file_chooser_get_current_folder (chooser));
}

/////////////////////////////////////////////////////////////////////////////

static gboolean disable_cb (gpointer data)
{
  ((void (*)(void *, const char *)) dlsym (RTLD_NEXT, "gtk_file_chooser_set_filename"))(GTK_FILE_CHOOSER (data), "/tmp/gtkbfc/empty");

  GtkWidget *toplevel = gtk_widget_get_toplevel (data);
  if (toplevel) gtk_widget_set_sensitive (toplevel, 0);

  gtk_widget_unref (data);
  return FALSE;
}

static gboolean read_result (GIOChannel *source, GIOCondition condition, gpointer data)
{
  if (last_path)
    {
      g_free (last_path);
      last_path = 0;
    }

  g_io_channel_read_to_end (source, &last_path, 0, 0);
  g_io_channel_unref (source);

  GtkWidget *toplevel = gtk_widget_get_toplevel (data);
  if (toplevel) gtk_widget_set_sensitive (toplevel, 1);

  if (!last_path || *last_path != '/')
    {
      DEBUG ((printf ("read_result cancel\n")))
      g_free (last_path);
      last_path = 0;

      if (toplevel)
        {
          GdkEvent ev = { GDK_DELETE };
          g_signal_emit_by_name (toplevel, "delete-event", &ev);
        }
    }
  else
    {
      DEBUG ((printf ("read_result<%s>\n", last_path)))
      gtk_file_chooser_set_do_overwrite_confirmation (GTK_FILE_CHOOSER (data), FALSE);
      g_signal_emit_by_name (GTK_FILE_CHOOSER (data), "file-activated");
    }

  gtk_widget_unref (data);
  return FALSE;
}

static gboolean map_cb (GtkWidget *widget, gpointer user_data) 
{
  gchar *argv[10];
  gboolean save = 0;
  char xid [40];

  argv [0] = helper;

  switch (gtk_file_chooser_get_action (GTK_FILE_CHOOSER (widget)))
    {
      case GTK_FILE_CHOOSER_ACTION_SAVE:          argv [1] = "save "; save = 1;break;
      case GTK_FILE_CHOOSER_ACTION_OPEN:          argv [1] = "load "; break;
      case GTK_FILE_CHOOSER_ACTION_CREATE_FOLDER: argv [1] = "mkdir "; save = 1; break;
      case GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER: argv [1] = "cd "; break;
      default: argv [1] = "<unknown action> "; break;
    }

  GdkWindow *w = gtk_widget_get_parent_window (GTK_WIDGET (widget));

  snprintf (xid, 80, "%lu", (unsigned long)(w ? gdk_x11_drawable_get_xid (w) : 0));
  argv [2] = xid;
  argv [3] = 0;

  mkdir ("/tmp/gtkbfc", 0777);
  close (open ("/tmp/gtkbfc/empty", O_WRONLY|O_CREAT|O_TRUNC, 0666));

  ((void (*)(void *, const char *)) dlsym (RTLD_NEXT, "gtk_file_chooser_set_filename"))(GTK_FILE_CHOOSER (widget), "/tmp/gtkbfc/empty");

  gint stdout_fd = -1;

  gtk_widget_ref (widget); disable_cb (widget);

  if (g_spawn_async_with_pipes (0, argv, 0, 0, 0, 0, 0, 0, &stdout_fd, 0, 0))
    {
      GIOChannel *channel = g_io_channel_unix_new (stdout_fd);

      gtk_widget_ref (widget); g_io_add_watch (channel, G_IO_IN  | G_IO_ERR | G_IO_HUP, read_result, widget);

      // disable again in an idle handler, to get around race conditions
      gtk_widget_ref (widget); g_idle_add (disable_cb, widget);
    }
}

static GObject *new_constructor (GType type, guint n_construct_properties, GObjectConstructParam *construct_properties)
{
  GObject *ob = old_constructor (type, n_construct_properties, construct_properties);
  g_signal_connect_after (ob, "map", G_CALLBACK (map_cb), 0);
  return ob;
}

__attribute__ ((constructor))
static void init ()
{
  g_type_init ();

  GType type = GTK_TYPE_FILE_CHOOSER_WIDGET;
  GObjectClass *klass = g_type_class_ref (type);

  old_constructor = klass->constructor;
  klass->constructor = new_constructor;
}

Revision:	1.20
Committed:	Sat Sep 8 16:21:14 2007 UTC (16 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-0_1
Changes since 1.19:	+1 -1 lines
Log Message:	* empty log message *
#	Content
1	/* this file is publiched under the gnu gpl license, version 3 or any later */
2
3	#define _GNU_SOURCE
4
5	#include <dlfcn.h>
6	#include <glib.h>
7	#include <gtk/gtk.h>
8	#include <stdlib.h>
9	#include <string.h>
10	#include <unistd.h>
11	#include <sys/types.h>
12	#include <sys/stat.h>
13	#include <fcntl.h>
14
15	static const char gtkbfc_version_string[] = "gtkbfc version 0.1";
16
17	static char *helper = "/etc/gtkbfc-helper";
18
19	static GObject (old_constructor) (GType type, guint n_construct_properties, GObjectConstructParam *construct_properties);
20
21	static gchar *last_path;
22
23	#if 0
24	# define DEBUG(stmt) stmt;
25	#else
26	# define DEBUG(stmt)
27	#endif
28
29	/////////////////////////////////////////////////////////////////////////////
30
31	gchar gtk_file_chooser_get_filename (GtkFileChooser chooser)
32	{
33	DEBUG ((printf ("gtk_file_chooser_get_filename<%s>\n", last_path)))
34	return g_strdup (last_path ? last_path : "/nonex1st4nt");
35	}
36
37	gboolean gtk_file_chooser_select_filename (GtkFileChooser chooser, const char filename)
38	{
39	return 1;
40	}
41
42	void gtk_file_chooser_unselect_all (GtkFileChooser *chooser)
43	{
44	}
45
46	gboolean gtk_file_chooser_set_filename (GtkFileChooser chooser, const char filename)
47	{
48	return 1;
49	}
50
51	void gtk_file_chooser_set_current_name (GtkFileChooser chooser, const char filename)
52	{
53	}
54
55	GSList gtk_file_chooser_get_filenames (GtkFileChooser chooser)
56	{
57	GSList *rv = 0;
58	rv = g_slist_prepend (rv, gtk_file_chooser_get_filename (chooser));
59	return rv;
60	}
61
62	gboolean gtk_file_chooser_set_current_folder (GtkFileChooser chooser, const gchar folder)
63	{
64	return 1;
65	}
66
67	gchar * gtk_file_chooser_get_current_folder (GtkFileChooser *chooser)
68	{
69	DEBUG ((printf ("gtk_file_chooser_get_current_folder\n")))
70	return g_strdup ("/tmp/gtkbfc");
71	}
72
73	/////////////////////////////////////////////////////////////////////////////
74
75	static const gchar *
76	from_uri (const gchar *uri)
77	{
78	const gchar *rv = uri;
79
80	if (!strncmp (uri, "file:///", sizeof ("file:///") - 1))
81	rv += sizeof ("file:///") - 1;
82
83	return rv;
84	}
85
86	static gchar *
87	to_uri (gchar *file)
88	{
89	gchar *rv = NULL;
90
91	if (file)
92	{
93	GString *str = g_string_new ("file://");
94	str = g_string_append (str, file);
95	rv = g_strdup (str->str);
96	g_string_free (str, TRUE);
97	g_free (file);
98	}
99
100	return rv;
101	}
102
103	static GSList *
104	to_uris (GSList *files)
105	{
106	GSList *item = files;
107
108	for (; item; item = g_slist_next (item))
109	{
110	GString *str = g_string_new ("file://");
111	gchar *cur = item->data;
112
113	str = g_string_append (str, cur);
114	item->data = g_string_free (str, FALSE);
115	g_free (cur);
116	}
117
118	return files;
119	}
120
121	gchar gtk_file_chooser_get_uri (GtkFileChooser chooser)
122	{
123	gchar *uri = to_uri(gtk_file_chooser_get_filename (chooser));
124	DEBUG ((printf ("gtk_file_chooser_get_uri<%s>\n", uri)))
125	return uri;
126	}
127
128	gboolean gtk_file_chooser_set_uri (GtkFileChooser chooser, const char uri)
129	{
130	return gtk_file_chooser_set_filename (chooser, from_uri (uri));
131	}
132
133	GSList gtk_file_chooser_get_uris (GtkFileChooser chooser)
134	{
135	return to_uris (gtk_file_chooser_get_filenames (chooser));
136	}
137
138	gboolean gtk_file_chooser_set_current_folder_uri(GtkFileChooser chooser, const gchar uri)
139	{
140	return gtk_file_chooser_set_current_folder (chooser, from_uri (uri));
141	}
142
143	gchar gtk_file_chooser_get_current_folder_uri (GtkFileChooser chooser)
144	{
145	return to_uri (gtk_file_chooser_get_current_folder (chooser));
146	}
147
148	/////////////////////////////////////////////////////////////////////////////
149
150	static gboolean disable_cb (gpointer data)
151	{
152	((void ()(void , const char *)) dlsym (RTLD_NEXT, "gtk_file_chooser_set_filename"))(GTK_FILE_CHOOSER (data), "/tmp/gtkbfc/empty");
153
154	GtkWidget *toplevel = gtk_widget_get_toplevel (data);
155	if (toplevel) gtk_widget_set_sensitive (toplevel, 0);
156
157	gtk_widget_unref (data);
158	return FALSE;
159	}
160
161	static gboolean read_result (GIOChannel *source, GIOCondition condition, gpointer data)
162	{
163	if (last_path)
164	{
165	g_free (last_path);
166	last_path = 0;
167	}
168
169	g_io_channel_read_to_end (source, &last_path, 0, 0);
170	g_io_channel_unref (source);
171
172	GtkWidget *toplevel = gtk_widget_get_toplevel (data);
173	if (toplevel) gtk_widget_set_sensitive (toplevel, 1);
174
175	if (!last_path \|\| *last_path != '/')
176	{
177	DEBUG ((printf ("read_result cancel\n")))
178	g_free (last_path);
179	last_path = 0;
180
181	if (toplevel)
182	{
183	GdkEvent ev = { GDK_DELETE };
184	g_signal_emit_by_name (toplevel, "delete-event", &ev);
185	}
186	}
187	else
188	{
189	DEBUG ((printf ("read_result<%s>\n", last_path)))
190	gtk_file_chooser_set_do_overwrite_confirmation (GTK_FILE_CHOOSER (data), FALSE);
191	g_signal_emit_by_name (GTK_FILE_CHOOSER (data), "file-activated");
192	}
193
194	gtk_widget_unref (data);
195	return FALSE;
196	}
197
198	static gboolean map_cb (GtkWidget *widget, gpointer user_data)
199	{
200	gchar *argv[10];
201	gboolean save = 0;
202	char xid [40];
203
204	argv [0] = helper;
205
206	switch (gtk_file_chooser_get_action (GTK_FILE_CHOOSER (widget)))
207	{
208	case GTK_FILE_CHOOSER_ACTION_SAVE: argv [1] = "save "; save = 1;break;
209	case GTK_FILE_CHOOSER_ACTION_OPEN: argv [1] = "load "; break;
210	case GTK_FILE_CHOOSER_ACTION_CREATE_FOLDER: argv [1] = "mkdir "; save = 1; break;
211	case GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER: argv [1] = "cd "; break;
212	default: argv [1] = "<unknown action> "; break;
213	}
214
215	GdkWindow *w = gtk_widget_get_parent_window (GTK_WIDGET (widget));
216
217	snprintf (xid, 80, "%lu", (unsigned long)(w ? gdk_x11_drawable_get_xid (w) : 0));
218	argv [2] = xid;
219	argv [3] = 0;
220
221	mkdir ("/tmp/gtkbfc", 0777);
222	close (open ("/tmp/gtkbfc/empty", O_WRONLY\|O_CREAT\|O_TRUNC, 0666));
223
224	((void ()(void , const char *)) dlsym (RTLD_NEXT, "gtk_file_chooser_set_filename"))(GTK_FILE_CHOOSER (widget), "/tmp/gtkbfc/empty");
225
226	gint stdout_fd = -1;
227
228	gtk_widget_ref (widget); disable_cb (widget);
229
230	if (g_spawn_async_with_pipes (0, argv, 0, 0, 0, 0, 0, 0, &stdout_fd, 0, 0))
231	{
232	GIOChannel *channel = g_io_channel_unix_new (stdout_fd);
233
234	gtk_widget_ref (widget); g_io_add_watch (channel, G_IO_IN \| G_IO_ERR \| G_IO_HUP, read_result, widget);
235
236	// disable again in an idle handler, to get around race conditions
237	gtk_widget_ref (widget); g_idle_add (disable_cb, widget);
238	}
239	}
240
241	static GObject new_constructor (GType type, guint n_construct_properties, GObjectConstructParam construct_properties)
242	{
243	GObject *ob = old_constructor (type, n_construct_properties, construct_properties);
244	g_signal_connect_after (ob, "map", G_CALLBACK (map_cb), 0);
245	return ob;
246	}
247
248	__attribute__ ((constructor))
249	static void init ()
250	{
251	g_type_init ();
252
253	GType type = GTK_TYPE_FILE_CHOOSER_WIDGET;
254	GObjectClass *klass = g_type_class_ref (type);
255
256	old_constructor = klass->constructor;
257	klass->constructor = new_constructor;
258	}
259