gtkfilesel.c

gtk是linux一款强大的夸平台的图形化开发工具

  filesel->selection_text = label = gtk_label_new ("");
  gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
  gtk_box_pack_start (GTK_BOX (entry_vbox), label, FALSE, FALSE, 0);
  gtk_widget_show (label);

  filesel->selection_entry = gtk_entry_new ();
  gtk_signal_connect (GTK_OBJECT (filesel->selection_entry), "key_press_event",
		      (GtkSignalFunc) gtk_file_selection_key_press, filesel);
  gtk_signal_connect_object (GTK_OBJECT (filesel->selection_entry), "focus_in_event",
			     (GtkSignalFunc) gtk_widget_grab_default,
			     GTK_OBJECT (filesel->ok_button));
  gtk_signal_connect_object (GTK_OBJECT (filesel->selection_entry), "activate",
                             (GtkSignalFunc) gtk_button_clicked,
                             GTK_OBJECT (filesel->ok_button));
  gtk_box_pack_start (GTK_BOX (entry_vbox), filesel->selection_entry, TRUE, TRUE, 0);
  gtk_widget_show (filesel->selection_entry);

  if (!cmpl_state_okay (filesel->cmpl_state))
    {
      gchar err_buf[256];

      sprintf (err_buf, _("Directory unreadable: %s"), cmpl_strerror (cmpl_errno));

      gtk_label_set_text (GTK_LABEL (filesel->selection_text), err_buf);
    }
  else
    {
      gtk_file_selection_populate (filesel, "", FALSE);
    }

  gtk_widget_grab_focus (filesel->selection_entry);
}

GtkWidget*
gtk_file_selection_new (const gchar *title)
{
  GtkFileSelection *filesel;

  filesel = gtk_type_new (GTK_TYPE_FILE_SELECTION);
  gtk_window_set_title (GTK_WINDOW (filesel), title);

  return GTK_WIDGET (filesel);
}

void
gtk_file_selection_show_fileop_buttons (GtkFileSelection *filesel)
{
  g_return_if_fail (filesel != NULL);
  g_return_if_fail (GTK_IS_FILE_SELECTION (filesel));
    
  /* delete, create directory, and rename */
  if (!filesel->fileop_c_dir) 
    {
      filesel->fileop_c_dir = gtk_button_new_with_label (_("Create Dir"));
      gtk_signal_connect (GTK_OBJECT (filesel->fileop_c_dir), "clicked",
			  (GtkSignalFunc) gtk_file_selection_create_dir, 
			  (gpointer) filesel);
      gtk_box_pack_start (GTK_BOX (filesel->button_area), 
			  filesel->fileop_c_dir, TRUE, TRUE, 0);
      gtk_widget_show (filesel->fileop_c_dir);
    }
	
  if (!filesel->fileop_del_file) 
    {
      filesel->fileop_del_file = gtk_button_new_with_label (_("Delete File"));
      gtk_signal_connect (GTK_OBJECT (filesel->fileop_del_file), "clicked",
			  (GtkSignalFunc) gtk_file_selection_delete_file, 
			  (gpointer) filesel);
      gtk_box_pack_start (GTK_BOX (filesel->button_area), 
			  filesel->fileop_del_file, TRUE, TRUE, 0);
      gtk_widget_show (filesel->fileop_del_file);
    }

  if (!filesel->fileop_ren_file)
    {
      filesel->fileop_ren_file = gtk_button_new_with_label (_("Rename File"));
      gtk_signal_connect (GTK_OBJECT (filesel->fileop_ren_file), "clicked",
			  (GtkSignalFunc) gtk_file_selection_rename_file, 
			  (gpointer) filesel);
      gtk_box_pack_start (GTK_BOX (filesel->button_area), 
			  filesel->fileop_ren_file, TRUE, TRUE, 0);
      gtk_widget_show (filesel->fileop_ren_file);
    }

  gtk_widget_queue_resize(GTK_WIDGET(filesel));
}

void       
gtk_file_selection_hide_fileop_buttons (GtkFileSelection *filesel)
{
  g_return_if_fail (filesel != NULL);
  g_return_if_fail (GTK_IS_FILE_SELECTION (filesel));
    
  if (filesel->fileop_ren_file) 
    {
      gtk_widget_destroy (filesel->fileop_ren_file);
      filesel->fileop_ren_file = NULL;
    }

  if (filesel->fileop_del_file)
    {
      gtk_widget_destroy (filesel->fileop_del_file);
      filesel->fileop_del_file = NULL;
    }

  if (filesel->fileop_c_dir)
    {
      gtk_widget_destroy (filesel->fileop_c_dir);
      filesel->fileop_c_dir = NULL;
    }
}



void
gtk_file_selection_set_filename (GtkFileSelection *filesel,
				 const gchar      *filename)
{
  char  buf[MAXPATHLEN];
  const char *name, *last_slash;

  g_return_if_fail (filesel != NULL);
  g_return_if_fail (GTK_IS_FILE_SELECTION (filesel));
  g_return_if_fail (filename != NULL);

  last_slash = strrchr (filename, '/');

  if (!last_slash)
    {
      buf[0] = 0;
      name = filename;
    }
  else
    {
      gint len = MIN (MAXPATHLEN - 1, last_slash - filename + 1);

      strncpy (buf, filename, len);
      buf[len] = 0;

      name = last_slash + 1;
    }

  gtk_file_selection_populate (filesel, buf, FALSE);

  if (filesel->selection_entry)
    gtk_entry_set_text (GTK_ENTRY (filesel->selection_entry), name);
}

gchar*
gtk_file_selection_get_filename (GtkFileSelection *filesel)
{
  static char nothing[2] = "";
  char *text;
  char *filename;

  g_return_val_if_fail (filesel != NULL, nothing);
  g_return_val_if_fail (GTK_IS_FILE_SELECTION (filesel), nothing);

  text = gtk_entry_get_text (GTK_ENTRY (filesel->selection_entry));
  if (text)
    {
      filename = cmpl_completion_fullname (text, filesel->cmpl_state);
      return filename;
    }

  return nothing;
}

void
gtk_file_selection_complete (GtkFileSelection *filesel,
			     const gchar      *pattern)
{
  g_return_if_fail (filesel != NULL);
  g_return_if_fail (GTK_IS_FILE_SELECTION (filesel));
  g_return_if_fail (pattern != NULL);

  if (filesel->selection_entry)
    gtk_entry_set_text (GTK_ENTRY (filesel->selection_entry), pattern);
  gtk_file_selection_populate (filesel, (gchar*) pattern, TRUE);
}

static void
gtk_file_selection_destroy (GtkObject *object)
{
  GtkFileSelection *filesel;
  GList *list;
  HistoryCallbackArg *callback_arg;

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

  filesel = GTK_FILE_SELECTION (object);
  
  if (filesel->fileop_dialog)
	  gtk_widget_destroy (filesel->fileop_dialog);
  
  if (filesel->history_list)
    {
      list = filesel->history_list;
      while (list)
	{
	  callback_arg = list->data;
	  g_free (callback_arg->directory);
	  g_free (callback_arg);
	  list = list->next;
	}
      g_list_free (filesel->history_list);
      filesel->history_list = NULL;
    }
  
  cmpl_free_state (filesel->cmpl_state);
  filesel->cmpl_state = NULL;

  if (GTK_OBJECT_CLASS (parent_class)->destroy)
    (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}

/* Begin file operations callbacks */

static void
gtk_file_selection_fileop_error (GtkFileSelection *fs, gchar *error_message)
{
  GtkWidget *label;
  GtkWidget *vbox;
  GtkWidget *button;
  GtkWidget *dialog;
  
  g_return_if_fail (error_message != NULL);
  
  /* main dialog */
  dialog = gtk_dialog_new ();
  /*
  gtk_signal_connect (GTK_OBJECT (dialog), "destroy",
		      (GtkSignalFunc) gtk_file_selection_fileop_destroy, 
		      (gpointer) fs);
  */
  gtk_window_set_title (GTK_WINDOW (dialog), _("Error"));
  gtk_window_set_position (GTK_WINDOW (dialog), GTK_WIN_POS_MOUSE);
  
  /* If file dialog is grabbed, make this dialog modal too */
  /* When error dialog is closed, file dialog will be grabbed again */
  if (GTK_WINDOW(fs)->modal)
      gtk_window_set_modal (GTK_WINDOW(dialog), TRUE);

  vbox = gtk_vbox_new(FALSE, 0);
  gtk_container_set_border_width(GTK_CONTAINER(vbox), 8);
  gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), vbox,
		     FALSE, FALSE, 0);
  gtk_widget_show(vbox);

  label = gtk_label_new(error_message);
  gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
  gtk_box_pack_start(GTK_BOX(vbox), label, FALSE, FALSE, 5);
  gtk_widget_show(label);

  /* yes, we free it */
  g_free (error_message);
  
  /* close button */
  button = gtk_button_new_with_label (_("Close"));
  gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
			     (GtkSignalFunc) gtk_widget_destroy, 
			     (gpointer) dialog);
  gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area),
		     button, TRUE, TRUE, 0);
  GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
  gtk_widget_grab_default(button);
  gtk_widget_show (button);

  gtk_widget_show (dialog);
}

static void
gtk_file_selection_fileop_destroy (GtkWidget *widget, gpointer data)
{
  GtkFileSelection *fs = data;

  g_return_if_fail (fs != NULL);
  g_return_if_fail (GTK_IS_FILE_SELECTION (fs));
  
  fs->fileop_dialog = NULL;
}


static void
gtk_file_selection_create_dir_confirmed (GtkWidget *widget, gpointer data)
{
  GtkFileSelection *fs = data;
  gchar *dirname;
  gchar *path;
  gchar *full_path;
  gchar *buf;
  CompletionState *cmpl_state;
  
  g_return_if_fail (fs != NULL);
  g_return_if_fail (GTK_IS_FILE_SELECTION (fs));

  dirname = gtk_entry_get_text (GTK_ENTRY (fs->fileop_entry));
  cmpl_state = (CompletionState*) fs->cmpl_state;
  path = cmpl_reference_position (cmpl_state);
  
  full_path = g_strconcat (path, "/", dirname, NULL);
  if ( (mkdir (full_path, 0755) < 0) ) 
    {
      buf = g_strconcat ("Error creating directory \"", dirname, "\":  ", 
			 g_strerror(errno), NULL);
      gtk_file_selection_fileop_error (fs, buf);
    }
  g_free (full_path);
  
  gtk_widget_destroy (fs->fileop_dialog);
  gtk_file_selection_populate (fs, "", FALSE);
}
  
static void
gtk_file_selection_create_dir (GtkWidget *widget, gpointer data)
{
  GtkFileSelection *fs = data;
  GtkWidget *label;
  GtkWidget *dialog;
  GtkWidget *vbox;
  GtkWidget *button;

  g_return_if_fail (fs != NULL);
  g_return_if_fail (GTK_IS_FILE_SELECTION (fs));

  if (fs->fileop_dialog)
	  return;
  
  /* main dialog */
  fs->fileop_dialog = dialog = gtk_dialog_new ();
  gtk_signal_connect (GTK_OBJECT (dialog), "destroy",
		      (GtkSignalFunc) gtk_file_selection_fileop_destroy, 
		      (gpointer) fs);
  gtk_window_set_title (GTK_WINDOW (dialog), _("Create Directory"));
  gtk_window_set_position (GTK_WINDOW (dialog), GTK_WIN_POS_MOUSE);

  /* If file dialog is grabbed, grab option dialog */
  /* When option dialog is closed, file dialog will be grabbed again */
  if (GTK_WINDOW(fs)->modal)
      gtk_window_set_modal (GTK_WINDOW(dialog), TRUE);

  vbox = gtk_vbox_new(FALSE, 0);
  gtk_container_set_border_width(GTK_CONTAINER(vbox), 8);
  gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), vbox,
		     FALSE, FALSE, 0);
  gtk_widget_show(vbox);
  
  label = gtk_label_new(_("Directory name:"));
  gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
  gtk_box_pack_start(GTK_BOX(vbox), label, FALSE, FALSE, 5);
  gtk_widget_show(label);

  /*  The directory entry widget  */
  fs->fileop_entry = gtk_entry_new ();
  gtk_box_pack_start (GTK_BOX (vbox), fs->fileop_entry, 
		      TRUE, TRUE, 5);
  GTK_WIDGET_SET_FLAGS(fs->fileop_entry, GTK_CAN_DEFAULT);
  gtk_widget_show (fs->fileop_entry);
  
  /* buttons */
  button = gtk_button_new_with_label (_("Create"));
  gtk_signal_connect (GTK_OBJECT (button), "clicked",
		      (GtkSignalFunc) gtk_file_selection_create_dir_confirmed, 
		      (gpointer) fs);
  gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area),
		     button, TRUE, TRUE, 0);
  GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
  gtk_widget_show(button);
  
  button = gtk_button_new_with_label (_("Cancel"));
  gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
			     (GtkSignalFunc) gtk_widget_destroy, 
			     (gpointer) dialog);
  gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area),
		     button, TRUE, TRUE, 0);
  GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
  gtk_widget_grab_default(button);
  gtk_widget_show (button);

  gtk_widget_show (dialog);
}

static void
gtk_file_selection_delete_file_confirmed (GtkWidget *widget, gpointer data)
{
  GtkFileSelection *fs = data;
  CompletionState *cmpl_state;
  gchar *path;
  gchar *full_path;
  gchar *buf;
  
  g_return_if_fail (fs != NULL);
  g_return_if_fail (GTK_IS_FILE_SELECTION (fs));

  cmpl_state = (CompletionState*) fs->cmpl_state;
  path = cmpl_reference_position (cmpl_state);
  
  full_path = g_strconcat (path, "/", fs->fileop_file, NULL);
  if ( (unlink (full_path) < 0) ) 
    {
      buf = g_strconcat ("Error deleting file \"", fs->fileop_file, "\":  ", 
			 g_strerror(errno), NULL);
      gtk_file_selection_fileop_error (fs, buf);
    }
  g_free (full_path);
  
  gtk_widget_destroy (fs->fileop_dialog);
  gtk_file_selection_populate (fs, "", FALSE);
}

static void
gtk_file_selection_delete_file (GtkWidget *widget, gpointer data)
{
  GtkFileSelection *fs = data;
  GtkWidget *label;
  GtkWidget *vbox;
  GtkWidget *button;
  GtkWidget *dialog;
  gchar *filename;
  gchar *buf;
  
  g_return_if_fail (fs != NULL);
  g_return_if_fail (GTK_IS_FILE_SELECTION (fs));

  if (fs->fileop_dialog)
	  return;

  filename = gtk_entry_get_text (GTK_ENTRY (fs->selection_entry));
  if (strlen(filename) < 1)
	  return;

  fs->fileop_file = filename;
  
  /* main dialog */
  fs->fileop_dialog = dialog = gtk_dialog_new ();
  gtk_signal_connect (GTK_OBJECT (dialog), "destroy",
		      (GtkSignalFunc) gtk_file_selection_fileop_destroy, 
		      (gpointer) fs);
  gtk_window_set_title (GTK_WINDOW (dialog), _("Delete File"));
  gtk_window_set_position (GTK_WINDOW (dialog), GTK_WIN_POS_MOUSE);

  /* If file dialog is grabbed, grab option dialog */
  /* When option dialog is closed, file dialog will be grabbed again */
  if (GTK_WINDOW(fs)->modal)
      gtk_window_set_modal (GTK_WINDOW(dialog), TRUE);
  
  vbox = gtk_vbox_new(FALSE, 0);
  gtk_container_set_border_width(GTK_CONTAINER(vbox), 8);
  gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), vbox,
		     FALSE, FALSE, 0);
  gtk_widget_show(vbox);

  buf = g_strconcat ("Really delete file \"", filename, "\" ?", NULL);
  label = gtk_label_new(buf);
  gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
  gtk_box_pack_start(GTK_BOX(vbox), label, FALSE, FALSE, 5);
  gtk_widget_show(label);
  g_free(buf);
  
  /* buttons */
  button = gtk_button_new_with_label (_("Delete"));
  gtk_signal_connect (GTK_OBJECT (button), "clicked",
		      (GtkSignalFunc) gtk_file_selection_delete_file_confirmed, 
		      (gpointer) fs);
  gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area),
		     button, TRUE, TRUE, 0);
  GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
  gtk_widget_show(button);
  
  button = gtk_button_new_with_label (_("Cancel"));
  gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
			     (GtkSignalFunc) gtk_widget_destroy, 
			     (gpointer) dialog);
  gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area),
		     button, TRUE, TRUE, 0);
  GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
  gtk_widget_grab_default(button);
  gtk_widget_show (button);

  gtk_widget_show (dialog);

}