src/acquire.c

/*
 * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
 *
 * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.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
 *
 */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdio.h>
#include <string.h>
#include <glib/gprintf.h>
#include <glib/gi18n.h>

#include "viking.h"
#include "babel.h"
#include "gpx.h"
#include "acquire.h"

/************************ FILTER LIST *******************/
// extern VikDataSourceInterface vik_datasource_gps_interface;
// extern VikDataSourceInterface vik_datasource_google_interface;

/*** Input is TRWLayer ***/
extern VikDataSourceInterface vik_datasource_bfilter_simplify_interface;
extern VikDataSourceInterface vik_datasource_bfilter_dup_interface;

/*** Input is a track and a TRWLayer ***/
extern VikDataSourceInterface vik_datasource_bfilter_polygon_interface;
extern VikDataSourceInterface vik_datasource_bfilter_exclude_polygon_interface;

/*** Input is a track ***/

const VikDataSourceInterface *filters[] = {
  &vik_datasource_bfilter_simplify_interface,
  &vik_datasource_bfilter_dup_interface,
  &vik_datasource_bfilter_polygon_interface,
  &vik_datasource_bfilter_exclude_polygon_interface,
};

const guint N_FILTERS = sizeof(filters) / sizeof(filters[0]);

VikTrack *filter_track = NULL;
gchar *filter_track_name = NULL;

/********************************************************/

/* passed along to worker thread */
typedef struct {
  acq_dialog_widgets_t *w;
  gchar *cmd;
  gchar *extra;
} w_and_interface_t;


/*********************************************************
 * Definitions and routines for acquiring data from Data Sources in general
 *********************************************************/

static void progress_func ( BabelProgressCode c, gpointer data, acq_dialog_widgets_t *w )
{
  gdk_threads_enter ();
  if (!w->ok) {
    if ( w->source_interface->cleanup_func )
      w->source_interface->cleanup_func( w->user_data );
    g_free ( w );
    gdk_threads_leave();
    g_thread_exit ( NULL );
  }
  gdk_threads_leave ();

  if ( w->source_interface->progress_func )
    w->source_interface->progress_func ( (gpointer) c, data, w );
}


/* this routine is the worker thread.  there is only one simultaneous download allowed */
static void get_from_anything ( w_and_interface_t *wi )
{
  gchar *cmd = wi->cmd;
  gchar *extra = wi->extra;
  gboolean result = TRUE;
  VikTrwLayer *vtl = NULL;

  gboolean creating_new_layer = TRUE;

  acq_dialog_widgets_t *w = wi->w;
  VikDataSourceInterface *source_interface = wi->w->source_interface;
  g_free ( wi );
  wi = NULL;

  gdk_threads_enter();
  if (source_interface->mode == VIK_DATASOURCE_ADDTOLAYER) {
    VikLayer *current_selected = vik_layers_panel_get_selected ( w->vlp );
    if ( IS_VIK_TRW_LAYER(current_selected) ) {
      vtl = VIK_TRW_LAYER(current_selected);
      creating_new_layer = FALSE;
    }
  }
  if ( creating_new_layer ) {
    vtl = VIK_TRW_LAYER ( vik_layer_create ( VIK_LAYER_TRW, w->vvp, NULL, FALSE ) );
    vik_layer_rename ( VIK_LAYER ( vtl ), _(source_interface->layer_title) );
    gtk_label_set_text ( GTK_LABEL(w->status), _("Working...") );
  }
  gdk_threads_leave();

  switch ( source_interface->type ) {
  case VIK_DATASOURCE_GPSBABEL_DIRECT:
    result = a_babel_convert_from (vtl, cmd, (BabelStatusFunc) progress_func, extra, w);
    break;
  case VIK_DATASOURCE_URL:
    result = a_babel_convert_from_url (vtl, cmd, extra, (BabelStatusFunc) progress_func, w);
    break;
  case VIK_DATASOURCE_SHELL_CMD:
    result = a_babel_convert_from_shellcommand ( vtl, cmd, extra, (BabelStatusFunc) progress_func, w);
    break;
  default:
    g_critical("Houston, we've had a problem.");
  }

  g_free ( cmd );
  g_free ( extra );

  if (!result) {
    gdk_threads_enter();
    gtk_label_set_text ( GTK_LABEL(w->status), _("Error: acquisition failed.") );
    if ( creating_new_layer )
      g_object_unref ( G_OBJECT ( vtl ) );
    gdk_threads_leave();
  }
  else {
    gdk_threads_enter();
    if (w->ok) {
      gtk_label_set_text ( GTK_LABEL(w->status), _("Done.") );
      if ( creating_new_layer ) {
	/* Only create the layer if it actually contains anything useful */
	if ( g_hash_table_size (vik_trw_layer_get_tracks(vtl)) ||
	     g_hash_table_size (vik_trw_layer_get_waypoints(vtl)) )
	  vik_aggregate_layer_add_layer( vik_layers_panel_get_top_layer(w->vlp), VIK_LAYER(vtl));
	else
	  gtk_label_set_text ( GTK_LABEL(w->status), _("No data.") );
      }
      /* View this data if available and is desired */
      if ( vtl && source_interface->autoview ) {
	vik_trw_layer_auto_set_view ( vtl, vik_layers_panel_get_viewport(w->vlp) );
	vik_layers_panel_emit_update (w->vlp);
      }
      if ( source_interface->keep_dialog_open ) {
        gtk_dialog_set_response_sensitive ( GTK_DIALOG(w->dialog), GTK_RESPONSE_ACCEPT, TRUE );
        gtk_dialog_set_response_sensitive ( GTK_DIALOG(w->dialog), GTK_RESPONSE_REJECT, FALSE );
      } else {
        gtk_dialog_response ( GTK_DIALOG(w->dialog), GTK_RESPONSE_ACCEPT );
      }
    } else {
      /* canceled */
      if ( creating_new_layer )
	g_object_unref(vtl);
    }
  }
  if ( source_interface->cleanup_func )
    source_interface->cleanup_func ( w->user_data );

  if ( w->ok ) {
    w->ok = FALSE;
  } else {
    g_free ( w );
  }

  gdk_threads_leave();
  g_thread_exit ( NULL );
}


static gchar *write_tmp_trwlayer ( VikTrwLayer *vtl )
{
  int fd_src;
  gchar *name_src;
  FILE *f;
  g_assert ((fd_src = g_file_open_tmp("tmp-viking.XXXXXX", &name_src, NULL)) >= 0);
  f = fdopen(fd_src, "w");
  a_gpx_write_file(vtl, f);
  fclose(f);
  f = NULL;
  return name_src;
}

/* TODO: write with name of old track */
static gchar *write_tmp_track ( VikTrack *track )
{
  int fd_src;
  gchar *name_src;
  FILE *f;
  g_assert ((fd_src = g_file_open_tmp("tmp-viking.XXXXXX", &name_src, NULL)) >= 0);
  f = fdopen(fd_src, "w");
  a_gpx_write_track_file("track", track, f); /* Thank you Guilhem! Just when I needed this function... -- Evan */
  fclose(f);
  f = NULL;
  return name_src;
}

/* TODO: cleanup, getr rid of redundancy */

/* depending on type of filter, often only vtl or track will be given.
 * the other can be NULL.
 */
static void acquire ( VikWindow *vw, VikLayersPanel *vlp, VikViewport *vvp, VikDataSourceInterface *source_interface,
		      VikTrwLayer *vtl, VikTrack *track )
{
  /* for manual dialogs */
  GtkWidget *dialog = NULL;
  GtkWidget *status;
  gchar *cmd, *extra;
  gchar *cmd_off = NULL;
  gchar *extra_off = NULL;
  acq_dialog_widgets_t *w;
  gpointer user_data;

  /* for UI builder */
  gpointer pass_along_data;
  VikLayerParamData *paramdatas = NULL;

  w_and_interface_t *wi;

  /*** INIT AND CHECK EXISTENCE ***/
  if ( source_interface->init_func )
    user_data = source_interface->init_func();
  else
    user_data = NULL;
  pass_along_data = user_data;

  if ( source_interface->check_existence_func ) {
    gchar *error_str = source_interface->check_existence_func();
    if ( error_str ) {
      a_dialog_error_msg ( GTK_WINDOW(vw), error_str );
      g_free ( error_str );
      return;
    }
  }

  /* BUILD UI & GET OPTIONS IF NECESSARY. */

  /* POSSIBILITY 0: NO OPTIONS. DO NOTHING HERE. */
  /* POSSIBILITY 1: ADD_SETUP_WIDGETS_FUNC */
  if ( source_interface->add_setup_widgets_func ) {
    dialog = gtk_dialog_new_with_buttons ( "", GTK_WINDOW(vw), 0, GTK_STOCK_OK, GTK_RESPONSE_ACCEPT, GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT, NULL );

    gtk_dialog_set_default_response ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT );
    GtkWidget *response_w = NULL;
#if GTK_CHECK_VERSION (2, 20, 0)
    response_w = gtk_dialog_get_widget_for_response ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT );
#endif

    source_interface->add_setup_widgets_func(dialog, vvp, user_data);
    gtk_window_set_title ( GTK_WINDOW(dialog), _(source_interface->window_title) );

    if ( response_w )
      gtk_widget_grab_focus ( response_w );

    if ( gtk_dialog_run ( GTK_DIALOG(dialog) ) != GTK_RESPONSE_ACCEPT ) {
      source_interface->cleanup_func(user_data);
      gtk_widget_destroy(dialog);
      return;
    }
  }
  /* POSSIBILITY 2: UI BUILDER */
  else if ( source_interface->params ) {
    paramdatas = a_uibuilder_run_dialog ( source_interface->window_title, GTK_WINDOW(vw),
			source_interface->params, source_interface->params_count,
			source_interface->params_groups, source_interface->params_groups_count,
			source_interface->params_defaults );
    if ( paramdatas )
      pass_along_data = paramdatas;
    else
      return; /* TODO: do we have to free anything here? */
  }

  /* CREATE INPUT DATA & GET COMMAND STRING */

  if ( source_interface->inputtype == VIK_DATASOURCE_INPUTTYPE_TRWLAYER ) {
    gchar *name_src = write_tmp_trwlayer ( vtl );

    ((VikDataSourceGetCmdStringFuncWithInput) source_interface->get_cmd_string_func)
	( pass_along_data, &cmd, &extra, name_src );

    g_free ( name_src );
    /* TODO: delete the tmp file? or delete it only after we're done with it? */
  } else if ( source_interface->inputtype == VIK_DATASOURCE_INPUTTYPE_TRWLAYER_TRACK ) {
    gchar *name_src = write_tmp_trwlayer ( vtl );
    gchar *name_src_track = write_tmp_track ( track );

    ((VikDataSourceGetCmdStringFuncWithInputInput) source_interface->get_cmd_string_func)
	( pass_along_data, &cmd, &extra, name_src, name_src_track );

    g_free ( name_src );
    g_free ( name_src_track );
  } else if ( source_interface->inputtype == VIK_DATASOURCE_INPUTTYPE_TRACK ) {
    gchar *name_src_track = write_tmp_track ( track );

    ((VikDataSourceGetCmdStringFuncWithInput) source_interface->get_cmd_string_func)
	( pass_along_data, &cmd, &extra, name_src_track );

    g_free ( name_src_track );
  } else
    source_interface->get_cmd_string_func ( pass_along_data, &cmd, &extra );

  /* Get data for Off command */
  if ( source_interface->off_func ) {
    source_interface->off_func ( pass_along_data, &cmd_off, &extra_off );
  }

  /* cleanup for option dialogs */
  if ( source_interface->add_setup_widgets_func ) {
    gtk_widget_destroy(dialog);
    dialog = NULL;
  } else if ( source_interface->params ) {
    a_uibuilder_free_paramdatas ( paramdatas, source_interface->params, source_interface->params_count );
  }

  /*** LET'S DO IT! ***/

  if ( ! cmd )
    return;

  w = g_malloc(sizeof(*w));
  wi = g_malloc(sizeof(*wi));
  wi->w = w;
  wi->w->source_interface = source_interface;
  wi->cmd = cmd;
  wi->extra = extra; /* usually input data type (?) */

  dialog = gtk_dialog_new_with_buttons ( "", GTK_WINDOW(vw), 0, GTK_STOCK_OK, GTK_RESPONSE_ACCEPT, GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT, NULL );
  gtk_dialog_set_response_sensitive ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT, FALSE );
  gtk_window_set_title ( GTK_WINDOW(dialog), _(source_interface->window_title) );


  w->dialog = dialog;
  w->ok = TRUE;
  status = gtk_label_new (_("Status: detecting gpsbabel"));
  gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), status, FALSE, FALSE, 5 );
  gtk_dialog_set_default_response ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT );
  gtk_widget_show_all(status);
  w->status = status;

  w->vw = vw;
  w->vlp = vlp;
  w->vvp = vvp;
  if ( source_interface->add_progress_widgets_func ) {
    source_interface->add_progress_widgets_func ( dialog, user_data );
  }
  w->user_data = user_data;


  g_thread_create((GThreadFunc)get_from_anything, wi, FALSE, NULL );

  gtk_dialog_run ( GTK_DIALOG(dialog) );
  if ( w->ok )
    w->ok = FALSE; /* tell thread to stop. TODO: add mutex */
  else {
    if ( cmd_off ) {
      /* Turn off */
      a_babel_convert_from (NULL, cmd_off, NULL, extra_off, NULL);
    }
    g_free ( w ); /* thread has finished; free w */
  }
  gtk_widget_destroy ( dialog );
}

void a_acquire ( VikWindow *vw, VikLayersPanel *vlp, VikViewport *vvp, VikDataSourceInterface *source_interface ) {
  acquire ( vw, vlp, vvp, source_interface, NULL, NULL );
}

static void acquire_trwlayer_callback ( GObject *menuitem, gpointer *pass_along )
{
  VikDataSourceInterface *iface = g_object_get_data ( menuitem, "vik_acq_iface" );
  VikWindow *vw =	pass_along[0];
  VikLayersPanel *vlp =	pass_along[1];
  VikViewport *vvp =	pass_along[2];
  VikTrwLayer *vtl =	pass_along[3];
  VikTrack *tr =	pass_along[4];

  acquire ( vw, vlp, vvp, iface, vtl, tr );
}

static GtkWidget *acquire_build_menu ( VikWindow *vw, VikLayersPanel *vlp, VikViewport *vvp,
				VikTrwLayer *vtl, VikTrack *track, /* both passed to acquire, although for many filters only one ness */
				const gchar *menu_title, vik_datasource_inputtype_t inputtype )
{
  static gpointer pass_along[5];
  GtkWidget *menu_item=NULL, *menu=NULL;
  GtkWidget *item=NULL;
  int i;

  pass_along[0] = vw;
  pass_along[1] = vlp;
  pass_along[2] = vvp;
  pass_along[3] = vtl;
  pass_along[4] = track;

  for ( i = 0; i < N_FILTERS; i++ ) {
    if ( filters[i]->inputtype == inputtype ) {
      if ( ! menu_item ) { /* do this just once, but return NULL if no filters */
        menu = gtk_menu_new();
        menu_item = gtk_menu_item_new_with_mnemonic ( menu_title );
        gtk_menu_item_set_submenu (GTK_MENU_ITEM (menu_item), menu );
      }

      item = gtk_menu_item_new_with_label ( filters[i]->window_title );
      g_object_set_data ( G_OBJECT(item), "vik_acq_iface", (gpointer) filters[i] );
      g_signal_connect ( G_OBJECT(item), "activate", G_CALLBACK(acquire_trwlayer_callback), pass_along );
      gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
      gtk_widget_show ( item );
    }
  }

  return menu_item;
}

GtkWidget *a_acquire_trwlayer_menu (VikWindow *vw, VikLayersPanel *vlp, VikViewport *vvp, VikTrwLayer *vtl)
{
  return acquire_build_menu ( vw, vlp, vvp, vtl, NULL, "_Filter", VIK_DATASOURCE_INPUTTYPE_TRWLAYER );
}

GtkWidget *a_acquire_trwlayer_track_menu (VikWindow *vw, VikLayersPanel *vlp, VikViewport *vvp, VikTrwLayer *vtl)
{
  if ( filter_track == NULL )
    return NULL;
  else {
    gchar *menu_title = g_strdup_printf ( "Filter with %s", filter_track_name );
    GtkWidget *rv = acquire_build_menu ( vw, vlp, vvp, vtl, filter_track,
			menu_title, VIK_DATASOURCE_INPUTTYPE_TRWLAYER_TRACK );
    g_free ( menu_title );
    return rv;
  }
}

GtkWidget *a_acquire_track_menu (VikWindow *vw, VikLayersPanel *vlp, VikViewport *vvp, VikTrack *tr)
{
  return acquire_build_menu ( vw, vlp, vvp, NULL, tr, "Filter", VIK_DATASOURCE_INPUTTYPE_TRACK );
}

void a_acquire_set_filter_track ( VikTrack *tr, const gchar *name )
{
  if ( filter_track )
    vik_track_free ( filter_track );
  if ( filter_track_name )
    g_free ( filter_track_name );

  filter_track = tr;
  vik_track_ref ( tr );

  filter_track_name = g_strdup(name);
}
Commit	Line	Data
	1	/*
	2	* viking -- GPS Data and Topo Analyzer, Explorer, and Manager
	3	*
	4	* Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	19	*
	20	*/
	21	#ifdef HAVE_CONFIG_H
	22	#include "config.h"
	23	#endif
	24
	25	#include <stdio.h>
	26	#include <string.h>
	27	#include <glib/gprintf.h>
	28	#include <glib/gi18n.h>
	29
	30	#include "viking.h"
	31	#include "babel.h"
	32	#include "gpx.h"
	33	#include "acquire.h"
	34
	35	/********************** FILTER LIST *****************/
	36	// extern VikDataSourceInterface vik_datasource_gps_interface;
	37	// extern VikDataSourceInterface vik_datasource_google_interface;
	38
	39	/* Input is TRWLayer */
	40	extern VikDataSourceInterface vik_datasource_bfilter_simplify_interface;
	41	extern VikDataSourceInterface vik_datasource_bfilter_dup_interface;
	42
	43	/* Input is a track and a TRWLayer */
	44	extern VikDataSourceInterface vik_datasource_bfilter_polygon_interface;
	45	extern VikDataSourceInterface vik_datasource_bfilter_exclude_polygon_interface;
	46
	47	/* Input is a track */
	48
	49	const VikDataSourceInterface *filters[] = {
	50	&vik_datasource_bfilter_simplify_interface,
	51	&vik_datasource_bfilter_dup_interface,
	52	&vik_datasource_bfilter_polygon_interface,
	53	&vik_datasource_bfilter_exclude_polygon_interface,
	54	};
	55
	56	const guint N_FILTERS = sizeof(filters) / sizeof(filters[0]);
	57
	58	VikTrack *filter_track = NULL;
	59	gchar *filter_track_name = NULL;
	60
	61	/********************************************************/
	62
	63	/* passed along to worker thread */
	64	typedef struct {
	65	acq_dialog_widgets_t *w;
	66	gchar *cmd;
	67	gchar *extra;
	68	} w_and_interface_t;
	69
	70
	71	/*********************************************************
	72	* Definitions and routines for acquiring data from Data Sources in general
	73	*********************************************************/
	74
	75	static void progress_func ( BabelProgressCode c, gpointer data, acq_dialog_widgets_t *w )
	76	{
	77	gdk_threads_enter ();
	78	if (!w->ok) {
	79	if ( w->source_interface->cleanup_func )
	80	w->source_interface->cleanup_func( w->user_data );
	81	g_free ( w );
	82	gdk_threads_leave();
	83	g_thread_exit ( NULL );
	84	}
	85	gdk_threads_leave ();
	86
	87	if ( w->source_interface->progress_func )
	88	w->source_interface->progress_func ( (gpointer) c, data, w );
	89	}
	90
	91
	92	/* this routine is the worker thread. there is only one simultaneous download allowed */
	93	static void get_from_anything ( w_and_interface_t *wi )
	94	{
	95	gchar *cmd = wi->cmd;
	96	gchar *extra = wi->extra;
	97	gboolean result = TRUE;
	98	VikTrwLayer *vtl = NULL;
	99
	100	gboolean creating_new_layer = TRUE;
	101
	102	acq_dialog_widgets_t *w = wi->w;
	103	VikDataSourceInterface *source_interface = wi->w->source_interface;
	104	g_free ( wi );
	105	wi = NULL;
	106
	107	gdk_threads_enter();
	108	if (source_interface->mode == VIK_DATASOURCE_ADDTOLAYER) {
	109	VikLayer *current_selected = vik_layers_panel_get_selected ( w->vlp );
	110	if ( IS_VIK_TRW_LAYER(current_selected) ) {
	111	vtl = VIK_TRW_LAYER(current_selected);
	112	creating_new_layer = FALSE;
	113	}
	114	}
	115	if ( creating_new_layer ) {
	116	vtl = VIK_TRW_LAYER ( vik_layer_create ( VIK_LAYER_TRW, w->vvp, NULL, FALSE ) );
	117	vik_layer_rename ( VIK_LAYER ( vtl ), _(source_interface->layer_title) );
	118	gtk_label_set_text ( GTK_LABEL(w->status), _("Working...") );
	119	}
	120	gdk_threads_leave();
	121
	122	switch ( source_interface->type ) {
	123	case VIK_DATASOURCE_GPSBABEL_DIRECT:
	124	result = a_babel_convert_from (vtl, cmd, (BabelStatusFunc) progress_func, extra, w);
	125	break;
	126	case VIK_DATASOURCE_URL:
	127	result = a_babel_convert_from_url (vtl, cmd, extra, (BabelStatusFunc) progress_func, w);
	128	break;
	129	case VIK_DATASOURCE_SHELL_CMD:
	130	result = a_babel_convert_from_shellcommand ( vtl, cmd, extra, (BabelStatusFunc) progress_func, w);
	131	break;
	132	default:
	133	g_critical("Houston, we've had a problem.");
	134	}
	135
	136	g_free ( cmd );
	137	g_free ( extra );
	138
	139	if (!result) {
	140	gdk_threads_enter();
	141	gtk_label_set_text ( GTK_LABEL(w->status), _("Error: acquisition failed.") );
	142	if ( creating_new_layer )
	143	g_object_unref ( G_OBJECT ( vtl ) );
	144	gdk_threads_leave();
	145	}
	146	else {
	147	gdk_threads_enter();
	148	if (w->ok) {
	149	gtk_label_set_text ( GTK_LABEL(w->status), _("Done.") );
	150	if ( creating_new_layer ) {
	151	/* Only create the layer if it actually contains anything useful */
	152	if ( g_hash_table_size (vik_trw_layer_get_tracks(vtl)) \|\|
	153	g_hash_table_size (vik_trw_layer_get_waypoints(vtl)) )
	154	vik_aggregate_layer_add_layer( vik_layers_panel_get_top_layer(w->vlp), VIK_LAYER(vtl));
	155	else
	156	gtk_label_set_text ( GTK_LABEL(w->status), _("No data.") );
	157	}
	158	/* View this data if available and is desired */
	159	if ( vtl && source_interface->autoview ) {
	160	vik_trw_layer_auto_set_view ( vtl, vik_layers_panel_get_viewport(w->vlp) );
	161	vik_layers_panel_emit_update (w->vlp);
	162	}
	163	if ( source_interface->keep_dialog_open ) {
	164	gtk_dialog_set_response_sensitive ( GTK_DIALOG(w->dialog), GTK_RESPONSE_ACCEPT, TRUE );
	165	gtk_dialog_set_response_sensitive ( GTK_DIALOG(w->dialog), GTK_RESPONSE_REJECT, FALSE );
	166	} else {
	167	gtk_dialog_response ( GTK_DIALOG(w->dialog), GTK_RESPONSE_ACCEPT );
	168	}
	169	} else {
	170	/* canceled */
	171	if ( creating_new_layer )
	172	g_object_unref(vtl);
	173	}
	174	}
	175	if ( source_interface->cleanup_func )
	176	source_interface->cleanup_func ( w->user_data );
	177
	178	if ( w->ok ) {
	179	w->ok = FALSE;
	180	} else {
	181	g_free ( w );
	182	}
	183
	184	gdk_threads_leave();
	185	g_thread_exit ( NULL );
	186	}
	187
	188
	189	static gchar write_tmp_trwlayer ( VikTrwLayer vtl )
	190	{
	191	int fd_src;
	192	gchar *name_src;
	193	FILE *f;
	194	g_assert ((fd_src = g_file_open_tmp("tmp-viking.XXXXXX", &name_src, NULL)) >= 0);
	195	f = fdopen(fd_src, "w");
	196	a_gpx_write_file(vtl, f);
	197	fclose(f);
	198	f = NULL;
	199	return name_src;
	200	}
	201
	202	/* TODO: write with name of old track */
	203	static gchar write_tmp_track ( VikTrack track )
	204	{
	205	int fd_src;
	206	gchar *name_src;
	207	FILE *f;
	208	g_assert ((fd_src = g_file_open_tmp("tmp-viking.XXXXXX", &name_src, NULL)) >= 0);
	209	f = fdopen(fd_src, "w");
	210	a_gpx_write_track_file("track", track, f); /* Thank you Guilhem! Just when I needed this function... -- Evan */
	211	fclose(f);
	212	f = NULL;
	213	return name_src;
	214	}
	215
	216	/* TODO: cleanup, getr rid of redundancy */
	217
	218	/* depending on type of filter, often only vtl or track will be given.
	219	* the other can be NULL.
	220	*/
	221	static void acquire ( VikWindow vw, VikLayersPanel vlp, VikViewport vvp, VikDataSourceInterface source_interface,
	222	VikTrwLayer vtl, VikTrack track )
	223	{
	224	/* for manual dialogs */
	225	GtkWidget *dialog = NULL;
	226	GtkWidget *status;
	227	gchar cmd, extra;
	228	gchar *cmd_off = NULL;
	229	gchar *extra_off = NULL;
	230	acq_dialog_widgets_t *w;
	231	gpointer user_data;
	232
	233	/* for UI builder */
	234	gpointer pass_along_data;
	235	VikLayerParamData *paramdatas = NULL;
	236
	237	w_and_interface_t *wi;
	238
	239	/* INIT AND CHECK EXISTENCE */
	240	if ( source_interface->init_func )
	241	user_data = source_interface->init_func();
	242	else
	243	user_data = NULL;
	244	pass_along_data = user_data;
	245
	246	if ( source_interface->check_existence_func ) {
	247	gchar *error_str = source_interface->check_existence_func();
	248	if ( error_str ) {
	249	a_dialog_error_msg ( GTK_WINDOW(vw), error_str );
	250	g_free ( error_str );
	251	return;
	252	}
	253	}
	254
	255	/* BUILD UI & GET OPTIONS IF NECESSARY. */
	256
	257	/* POSSIBILITY 0: NO OPTIONS. DO NOTHING HERE. */
	258	/* POSSIBILITY 1: ADD_SETUP_WIDGETS_FUNC */
	259	if ( source_interface->add_setup_widgets_func ) {
	260	dialog = gtk_dialog_new_with_buttons ( "", GTK_WINDOW(vw), 0, GTK_STOCK_OK, GTK_RESPONSE_ACCEPT, GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT, NULL );
	261
	262	gtk_dialog_set_default_response ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT );
	263	GtkWidget *response_w = NULL;
	264	#if GTK_CHECK_VERSION (2, 20, 0)
	265	response_w = gtk_dialog_get_widget_for_response ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT );
	266	#endif
	267
	268	source_interface->add_setup_widgets_func(dialog, vvp, user_data);
	269	gtk_window_set_title ( GTK_WINDOW(dialog), _(source_interface->window_title) );
	270
	271	if ( response_w )
	272	gtk_widget_grab_focus ( response_w );
	273
	274	if ( gtk_dialog_run ( GTK_DIALOG(dialog) ) != GTK_RESPONSE_ACCEPT ) {
	275	source_interface->cleanup_func(user_data);
	276	gtk_widget_destroy(dialog);
	277	return;
	278	}
	279	}
	280	/* POSSIBILITY 2: UI BUILDER */
	281	else if ( source_interface->params ) {
	282	paramdatas = a_uibuilder_run_dialog ( source_interface->window_title, GTK_WINDOW(vw),
	283	source_interface->params, source_interface->params_count,
	284	source_interface->params_groups, source_interface->params_groups_count,
	285	source_interface->params_defaults );
	286	if ( paramdatas )
	287	pass_along_data = paramdatas;
	288	else
	289	return; /* TODO: do we have to free anything here? */
	290	}
	291
	292	/* CREATE INPUT DATA & GET COMMAND STRING */
	293
	294	if ( source_interface->inputtype == VIK_DATASOURCE_INPUTTYPE_TRWLAYER ) {
	295	gchar *name_src = write_tmp_trwlayer ( vtl );
	296
	297	((VikDataSourceGetCmdStringFuncWithInput) source_interface->get_cmd_string_func)
	298	( pass_along_data, &cmd, &extra, name_src );
	299
	300	g_free ( name_src );
	301	/* TODO: delete the tmp file? or delete it only after we're done with it? */
	302	} else if ( source_interface->inputtype == VIK_DATASOURCE_INPUTTYPE_TRWLAYER_TRACK ) {
	303	gchar *name_src = write_tmp_trwlayer ( vtl );
	304	gchar *name_src_track = write_tmp_track ( track );
	305
	306	((VikDataSourceGetCmdStringFuncWithInputInput) source_interface->get_cmd_string_func)
	307	( pass_along_data, &cmd, &extra, name_src, name_src_track );
	308
	309	g_free ( name_src );
	310	g_free ( name_src_track );
	311	} else if ( source_interface->inputtype == VIK_DATASOURCE_INPUTTYPE_TRACK ) {
	312	gchar *name_src_track = write_tmp_track ( track );
	313
	314	((VikDataSourceGetCmdStringFuncWithInput) source_interface->get_cmd_string_func)
	315	( pass_along_data, &cmd, &extra, name_src_track );
	316
	317	g_free ( name_src_track );
	318	} else
	319	source_interface->get_cmd_string_func ( pass_along_data, &cmd, &extra );
	320
	321	/* Get data for Off command */
	322	if ( source_interface->off_func ) {
	323	source_interface->off_func ( pass_along_data, &cmd_off, &extra_off );
	324	}
	325
	326	/* cleanup for option dialogs */
	327	if ( source_interface->add_setup_widgets_func ) {
	328	gtk_widget_destroy(dialog);
	329	dialog = NULL;
	330	} else if ( source_interface->params ) {
	331	a_uibuilder_free_paramdatas ( paramdatas, source_interface->params, source_interface->params_count );
	332	}
	333
	334	/* LET'S DO IT! */
	335
	336	if ( ! cmd )
	337	return;
	338
	339	w = g_malloc(sizeof(*w));
	340	wi = g_malloc(sizeof(*wi));
	341	wi->w = w;
	342	wi->w->source_interface = source_interface;
	343	wi->cmd = cmd;
	344	wi->extra = extra; /* usually input data type (?) */
	345
	346	dialog = gtk_dialog_new_with_buttons ( "", GTK_WINDOW(vw), 0, GTK_STOCK_OK, GTK_RESPONSE_ACCEPT, GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT, NULL );
	347	gtk_dialog_set_response_sensitive ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT, FALSE );
	348	gtk_window_set_title ( GTK_WINDOW(dialog), _(source_interface->window_title) );
	349
	350
	351	w->dialog = dialog;
	352	w->ok = TRUE;
	353	status = gtk_label_new (_("Status: detecting gpsbabel"));
	354	gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), status, FALSE, FALSE, 5 );
	355	gtk_dialog_set_default_response ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT );
	356	gtk_widget_show_all(status);
	357	w->status = status;
	358
	359	w->vw = vw;
	360	w->vlp = vlp;
	361	w->vvp = vvp;
	362	if ( source_interface->add_progress_widgets_func ) {
	363	source_interface->add_progress_widgets_func ( dialog, user_data );
	364	}
	365	w->user_data = user_data;
	366
	367
	368	g_thread_create((GThreadFunc)get_from_anything, wi, FALSE, NULL );
	369
	370	gtk_dialog_run ( GTK_DIALOG(dialog) );
	371	if ( w->ok )
	372	w->ok = FALSE; /* tell thread to stop. TODO: add mutex */
	373	else {
	374	if ( cmd_off ) {
	375	/* Turn off */
	376	a_babel_convert_from (NULL, cmd_off, NULL, extra_off, NULL);
	377	}
	378	g_free ( w ); /* thread has finished; free w */
	379	}
	380	gtk_widget_destroy ( dialog );
	381	}
	382
	383	void a_acquire ( VikWindow vw, VikLayersPanel vlp, VikViewport vvp, VikDataSourceInterface source_interface ) {
	384	acquire ( vw, vlp, vvp, source_interface, NULL, NULL );
	385	}
	386
	387	static void acquire_trwlayer_callback ( GObject menuitem, gpointer pass_along )
	388	{
	389	VikDataSourceInterface *iface = g_object_get_data ( menuitem, "vik_acq_iface" );
	390	VikWindow *vw = pass_along[0];
	391	VikLayersPanel *vlp = pass_along[1];
	392	VikViewport *vvp = pass_along[2];
	393	VikTrwLayer *vtl = pass_along[3];
	394	VikTrack *tr = pass_along[4];
	395
	396	acquire ( vw, vlp, vvp, iface, vtl, tr );
	397	}
	398
	399	static GtkWidget acquire_build_menu ( VikWindow vw, VikLayersPanel vlp, VikViewport vvp,
	400	VikTrwLayer vtl, VikTrack track, /* both passed to acquire, although for many filters only one ness */
	401	const gchar *menu_title, vik_datasource_inputtype_t inputtype )
	402	{
	403	static gpointer pass_along[5];
	404	GtkWidget menu_item=NULL, menu=NULL;
	405	GtkWidget *item=NULL;
	406	int i;
	407
	408	pass_along[0] = vw;
	409	pass_along[1] = vlp;
	410	pass_along[2] = vvp;
	411	pass_along[3] = vtl;
	412	pass_along[4] = track;
	413
	414	for ( i = 0; i < N_FILTERS; i++ ) {
	415	if ( filters[i]->inputtype == inputtype ) {
	416	if ( ! menu_item ) { /* do this just once, but return NULL if no filters */
	417	menu = gtk_menu_new();
	418	menu_item = gtk_menu_item_new_with_mnemonic ( menu_title );
	419	gtk_menu_item_set_submenu (GTK_MENU_ITEM (menu_item), menu );
	420	}
	421
	422	item = gtk_menu_item_new_with_label ( filters[i]->window_title );
	423	g_object_set_data ( G_OBJECT(item), "vik_acq_iface", (gpointer) filters[i] );
	424	g_signal_connect ( G_OBJECT(item), "activate", G_CALLBACK(acquire_trwlayer_callback), pass_along );
	425	gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
	426	gtk_widget_show ( item );
	427	}
	428	}
	429
	430	return menu_item;
	431	}
	432
	433	GtkWidget a_acquire_trwlayer_menu (VikWindow vw, VikLayersPanel vlp, VikViewport vvp, VikTrwLayer *vtl)
	434	{
	435	return acquire_build_menu ( vw, vlp, vvp, vtl, NULL, "_Filter", VIK_DATASOURCE_INPUTTYPE_TRWLAYER );
	436	}
	437
	438	GtkWidget a_acquire_trwlayer_track_menu (VikWindow vw, VikLayersPanel vlp, VikViewport vvp, VikTrwLayer *vtl)
	439	{
	440	if ( filter_track == NULL )
	441	return NULL;
	442	else {
	443	gchar *menu_title = g_strdup_printf ( "Filter with %s", filter_track_name );
	444	GtkWidget *rv = acquire_build_menu ( vw, vlp, vvp, vtl, filter_track,
	445	menu_title, VIK_DATASOURCE_INPUTTYPE_TRWLAYER_TRACK );
	446	g_free ( menu_title );
	447	return rv;
	448	}
	449	}
	450
	451	GtkWidget a_acquire_track_menu (VikWindow vw, VikLayersPanel vlp, VikViewport vvp, VikTrack *tr)
	452	{
	453	return acquire_build_menu ( vw, vlp, vvp, NULL, tr, "Filter", VIK_DATASOURCE_INPUTTYPE_TRACK );
	454	}
	455
	456	void a_acquire_set_filter_track ( VikTrack tr, const gchar name )
	457	{
	458	if ( filter_track )
	459	vik_track_free ( filter_track );
	460	if ( filter_track_name )
	461	g_free ( filter_track_name );
	462
	463	filter_track = tr;
	464	vik_track_ref ( tr );
	465
	466	filter_track_name = g_strdup(name);
	467	}