Fix numerous instances of a variable/parameter name "shadowing" a library function...
[metze/wireshark/wip.git] / ui / gtk / main_welcome.c
index 13a151123b42f3ad77283612dc103f037dbd8d14..6c612ae3901da52bbc3ddf7b5058f947046d0380 100644 (file)
  *
  * 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.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
+#include "config.h"
 
-#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
 #include <time.h>
 
 #include <gtk/gtk.h>
 #endif
 
 #include <wsutil/file_util.h>
+#include <wsutil/str_util.h>
 
+#ifdef HAVE_LIBPCAP
+#include "ui/iface_lists.h"
+#include "ui/capture_globals.h"
+#endif
 #include "ui/recent.h"
 #include "ui/simple_dialog.h"
+#include "ui/utf8_entities.h"
 
 #include "ui/gtk/gui_utils.h"
 #include "ui/gtk/color_utils.h"
 #include "ui/gtk/help_dlg.h"
 #include "ui/gtk/capture_file_dlg.h"
 #include "ui/gtk/stock_icons.h"
-#include "ui/gtk/utf8_entities.h"
 #ifdef HAVE_LIBPCAP
 #include "ui/gtk/capture_dlg.h"
 #include "ui/gtk/capture_if_dlg.h"
-#include "ui/gtk/capture_globals.h"
 #if GTK_CHECK_VERSION(2,18,0)
 #include "ui/gtk/webbrowser.h"
 #endif
@@ -78,9 +77,6 @@
 #include "airpcap_loader.h"
 #include "airpcap_gui_utils.h"
 #endif
-#if defined(HAVE_AIRPCAP)
-#include "../../image/toolbar/capture_airpcap_16.xpm"
-#endif
 #if defined(HAVE_PCAP_REMOTE)
 #include "ui/gtk/remote_icons.h"
 #endif
@@ -106,14 +102,21 @@ static GdkColor topic_item_entered_bg = { 0, 0xd3d3, 0xd8d8, 0xdada };
 #endif
 static GtkWidget *welcome_file_panel_vb = NULL;
 #ifdef HAVE_LIBPCAP
-static GtkWidget *if_view = NULL;
-static GtkWidget *swindow;
+static GtkWidget *if_view = NULL; /* contains a view (list) of all the interfaces */
+static GtkWidget *if_scrolled_window; /* a scrolled window that contains the if_view */
 #endif
 
 static GSList *status_messages = NULL;
 
 static GMutex *recent_mtx;
 
+#ifdef HAVE_LIBPCAP
+static void capture_if_start(GtkWidget *w _U_, gpointer data _U_);
+#if GTK_CHECK_VERSION(2,18,0)
+static gboolean activate_link_cb(GtkLabel *label _U_, gchar *uri, gpointer user_data _U_);
+#endif
+#endif
+
 /* The "scroll box dynamic" is a (complicated) pseudo widget to */
 /* place a vertically list of widgets in (currently the interfaces and recent files). */
 /* Once this list get's higher than a specified amount, */
@@ -121,18 +124,25 @@ static GMutex *recent_mtx;
 /* This is all complicated, the scrolled window is a bit ugly, */
 /* the sizes might not be the same on all systems, ... */
 /* ... but that's the best what we currently have */
-#define SCROLL_BOX_CHILD_BOX        "ScrollBoxDynamic_ChildBox"
-#define SCROLL_BOX_MAX_CHILDS       "ScrollBoxDynamic_MaxChilds"
-#define SCROLL_BOX_SCROLLW_Y_SIZE   "ScrollBoxDynamic_Scrollw_Y_Size"
-#define SCROLL_BOX_SCROLLW          "ScrollBoxDynamic_Scrollw"
-#define TREE_VIEW_INTERFACES        "TreeViewInterfaces"
+#define SCROLL_BOX_CHILD_BOX          "ScrollBoxDynamic_ChildBox"
+#define SCROLL_BOX_MAX_CHILDS         "ScrollBoxDynamic_MaxChilds"
+#define SCROLL_BOX_SCROLLW_Y_SIZE     "ScrollBoxDynamic_Scrollw_Y_Size"
+#define SCROLL_BOX_SCROLLW            "ScrollBoxDynamic_Scrollw"
+#define TREE_VIEW_INTERFACES          "TreeViewInterfaces"
+#define CAPTURE_VIEW                  "CaptureView"
+#define CAPTURE_LABEL                 "CaptureLabel"
+#define CAPTURE_HB_BOX_INTERFACE_LIST "CaptureHorizontalBoxInterfaceList"
+#define CAPTURE_HB_BOX_START          "CaptureHorizontalBoxStart"
+#define CAPTURE_HB_BOX_CAPTURE        "CaptureHorizontalBoxCapture"
+#define CAPTURE_HB_BOX_REFRESH        "CaptureHorizontalBoxRefresh"
+
 
 static GtkWidget *
 scroll_box_dynamic_new(GtkWidget *child_box, guint max_childs, guint scrollw_y_size) {
     GtkWidget * parent_box;
 
 
-    parent_box = gtk_vbox_new(FALSE, 0);
+    parent_box = ws_gtk_box_new(GTK_ORIENTATION_VERTICAL, 0, FALSE);
     gtk_box_pack_start(GTK_BOX(parent_box), GTK_WIDGET(child_box), TRUE, TRUE, 0);
     g_object_set_data(G_OBJECT(parent_box), SCROLL_BOX_CHILD_BOX, child_box);
     g_object_set_data(G_OBJECT(parent_box), SCROLL_BOX_MAX_CHILDS, GINT_TO_POINTER(max_childs));
@@ -210,7 +220,7 @@ static gboolean
 welcome_item_enter_cb(GtkWidget *eb, GdkEventCrossing *event _U_, gpointer user_data _U_)
 {
 #if GTK_CHECK_VERSION(3,0,0)
-    gtk_widget_override_background_color(eb, GTK_STATE_NORMAL, &rgba_topic_item_entered_bg);
+    gtk_widget_override_background_color(eb, GTK_STATE_FLAG_NORMAL, &rgba_topic_item_entered_bg);
 #else
     gtk_widget_modify_bg(eb, GTK_STATE_NORMAL, &topic_item_entered_bg);
 #endif
@@ -223,7 +233,7 @@ static gboolean
 welcome_item_leave_cb(GtkWidget *eb, GdkEventCrossing *event _U_, gpointer user_data _U_)
 {
 #if GTK_CHECK_VERSION(3,0,0)
-    gtk_widget_override_background_color(eb, GTK_STATE_NORMAL, &rgba_topic_item_idle_bg);
+    gtk_widget_override_background_color(eb, GTK_STATE_FLAG_NORMAL, &rgba_topic_item_idle_bg);
 #else
     gtk_widget_modify_bg(eb, GTK_STATE_NORMAL, &topic_item_idle_bg);
 #endif
@@ -244,13 +254,13 @@ welcome_button(const gchar *stock_item,
     GtkWidget *eb, *w, *item_hb, *text_vb;
     gchar *formatted_text;
 
-    item_hb = gtk_hbox_new(FALSE, 1);
+    item_hb = ws_gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 1, FALSE);
 
     /* event box (for background color and events) */
     eb = gtk_event_box_new();
     gtk_container_add(GTK_CONTAINER(eb), item_hb);
 #if GTK_CHECK_VERSION(3,0,0)
-    gtk_widget_override_background_color(eb, GTK_STATE_NORMAL, &rgba_topic_item_idle_bg);
+    gtk_widget_override_background_color(eb, GTK_STATE_FLAG_NORMAL, &rgba_topic_item_idle_bg);
 #else
     gtk_widget_modify_bg(eb, GTK_STATE_NORMAL, &topic_item_idle_bg);
 #endif
@@ -266,7 +276,7 @@ welcome_button(const gchar *stock_item,
     w = gtk_image_new_from_stock(stock_item, GTK_ICON_SIZE_LARGE_TOOLBAR);
     gtk_box_pack_start(GTK_BOX(item_hb), w, FALSE, FALSE, 5);
 
-    text_vb = gtk_vbox_new(FALSE, 3);
+    text_vb = ws_gtk_box_new(GTK_ORIENTATION_VERTICAL, 3, FALSE);
 
     /* title */
     w = gtk_label_new(title);
@@ -320,7 +330,8 @@ welcome_header_set_message(gchar *msg) {
             g_string_append(message, prefs.gui_start_title);
         }
 
-        if (prefs.gui_version_in_start_page) {
+        if ((prefs.gui_version_placement == version_welcome_only) ||
+            (prefs.gui_version_placement == version_both)) {
             g_string_append_printf(message, "</span>\n<span size=\"large\" foreground=\"white\">Version " VERSION "%s",
                                    wireshark_svnversion);
         }
@@ -342,17 +353,17 @@ welcome_header_new(void)
     GtkWidget *eb;
     GtkWidget *icon;
 
-    item_vb = gtk_vbox_new(FALSE, 0);
+    item_vb = ws_gtk_box_new(GTK_ORIENTATION_VERTICAL, 0, FALSE);
 
     /* colorize vbox */
     eb = gtk_event_box_new();
     gtk_container_add(GTK_CONTAINER(eb), item_vb);
 #if GTK_CHECK_VERSION(3,0,0)
-    gtk_widget_override_background_color(eb, GTK_STATE_NORMAL, &rgba_header_bar_bg);
+    gtk_widget_override_background_color(eb, GTK_STATE_FLAG_NORMAL, &rgba_header_bar_bg);
 #else
     gtk_widget_modify_bg(eb, GTK_STATE_NORMAL, &header_bar_bg);
 #endif
-    item_hb = gtk_hbox_new(FALSE, 0);
+    item_hb = ws_gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 0, FALSE);
     gtk_box_pack_start(GTK_BOX(item_vb), item_hb, FALSE, FALSE, 10);
 
     /*icon = xpm_to_widget_from_parent(top_level, wssplash_xpm);*/
@@ -422,7 +433,7 @@ welcome_topic_header_new(const char *header)
     eb = gtk_event_box_new();
     gtk_container_add(GTK_CONTAINER(eb), w);
 #if GTK_CHECK_VERSION(3,0,0)
-    gtk_widget_override_background_color(eb, GTK_STATE_NORMAL, &rgba_topic_header_bg);
+    gtk_widget_override_background_color(eb, GTK_STATE_FLAG_NORMAL, &rgba_topic_header_bg);
 #else
     gtk_widget_modify_bg(eb, GTK_STATE_NORMAL, &topic_header_bg);
 #endif
@@ -440,12 +451,12 @@ welcome_topic_new(const char *header, GtkWidget **to_fill)
     GtkWidget *topic_header;
 
 
-    topic_vb = gtk_vbox_new(FALSE, 0);
+    topic_vb = ws_gtk_box_new(GTK_ORIENTATION_VERTICAL, 0, FALSE);
 
     topic_header = welcome_topic_header_new(header);
     gtk_box_pack_start(GTK_BOX(topic_vb), topic_header, FALSE, FALSE, 0);
 
-    layout_vb = gtk_vbox_new(FALSE, 5);
+    layout_vb = ws_gtk_box_new(GTK_ORIENTATION_VERTICAL, 5, FALSE);
     gtk_container_set_border_width(GTK_CONTAINER(layout_vb), 10);
     gtk_box_pack_start(GTK_BOX(topic_vb), layout_vb, FALSE, FALSE, 0);
 
@@ -453,7 +464,7 @@ welcome_topic_new(const char *header, GtkWidget **to_fill)
     topic_eb = gtk_event_box_new();
     gtk_container_add(GTK_CONTAINER(topic_eb), topic_vb);
 #if GTK_CHECK_VERSION(3,0,0)
-    gtk_widget_override_background_color(topic_eb, GTK_STATE_NORMAL, &rgba_topic_content_bg);
+    gtk_widget_override_background_color(topic_eb, GTK_STATE_FLAG_NORMAL, &rgba_topic_content_bg);
 #else
     gtk_widget_modify_bg(topic_eb, GTK_STATE_NORMAL, &topic_content_bg);
 #endif
@@ -491,6 +502,7 @@ static void *get_recent_item_status(void *data)
 {
     recent_item_status *ri_stat = (recent_item_status *) data;
     ws_statb64 stat_buf;
+    gchar *size_str;
     int err;
 
     if (!ri_stat) {
@@ -505,18 +517,12 @@ static void *get_recent_item_status(void *data)
     g_mutex_lock(recent_mtx);
     ri_stat->err = err;
     if(err == 0) {
-        if (stat_buf.st_size/1024/1024/1024 > 10) {
-            g_string_append_printf(ri_stat->str, " (%" G_GINT64_MODIFIER "d GB)", (gint64) (stat_buf.st_size/1024/1024/1024));
-        } else if (stat_buf.st_size/1024/1024 > 10) {
-            g_string_append_printf(ri_stat->str, " (%" G_GINT64_MODIFIER "d MB)", (gint64) (stat_buf.st_size/1024/1024));
-        } else if (stat_buf.st_size/1024 > 10) {
-            g_string_append_printf(ri_stat->str, " (%" G_GINT64_MODIFIER "d KB)", (gint64) (stat_buf.st_size/1024));
-        } else {
-            g_string_append_printf(ri_stat->str, " (%" G_GINT64_MODIFIER "d Bytes)", (gint64) (stat_buf.st_size));
-        }
+        size_str = format_size(stat_buf.st_size, format_size_unit_bytes|format_size_prefix_si);
+
         /* pango format string */
         g_string_prepend(ri_stat->str, "<span foreground='blue'>");
-        g_string_append(ri_stat->str, "</span>");
+        g_string_append_printf(ri_stat->str, " (%s)</span>", size_str);
+        g_free(size_str);
     } else {
         g_string_append(ri_stat->str, " [not found]");
     }
@@ -642,7 +648,7 @@ welcome_filename_link_new(const gchar *filename, GtkWidget **label, GObject *men
     /* event box */
     eb = gtk_event_box_new();
 #if GTK_CHECK_VERSION(3,0,0)
-       gtk_widget_override_background_color(eb, GTK_STATE_NORMAL, &rgba_topic_item_idle_bg);
+    gtk_widget_override_background_color(eb, GTK_STATE_FLAG_NORMAL, &rgba_topic_item_idle_bg);
 #else
     gtk_widget_modify_bg(eb, GTK_STATE_NORMAL, &topic_item_idle_bg);
 #endif
@@ -698,32 +704,6 @@ main_welcome_add_recent_capture_file(const char *widget_cf_name, GObject *menu_i
 }
 
 #ifdef HAVE_LIBPCAP
-static gboolean select_current_ifaces(GtkTreeModel  *model,
-                                  GtkTreePath   *path,
-                                  GtkTreeIter   *iter,
-                                  gpointer       userdata)
-{
-    guint i;
-    gchar *if_name;
-    interface_t device;
-
-    GtkTreeSelection *selection = (GtkTreeSelection *)userdata;
-    device.name = NULL;
-    gtk_tree_model_get (model, iter, IFACE_NAME, &if_name, -1);
-    for (i = 0; i < global_capture_opts.all_ifaces->len; i++) {
-        device = g_array_index(global_capture_opts.all_ifaces, interface_t, i);
-        if (strcmp(device.name, if_name) == 0) {
-            if (device.selected && !gtk_tree_selection_path_is_selected(selection, path)) {
-                gtk_tree_selection_select_iter(selection, iter);
-            } else {
-                gtk_tree_selection_unselect_iter(selection, iter);
-            }
-            break;
-        }
-    }
-    return FALSE;
-}
-
 gboolean on_selection_changed(GtkTreeSelection *selection _U_,
                               GtkTreeModel *model,
                               GtkTreePath *path,
@@ -757,7 +737,7 @@ gboolean on_selection_changed(GtkTreeSelection *selection _U_,
                 global_capture_opts.all_ifaces = g_array_remove_index(global_capture_opts.all_ifaces, i);
                 g_array_insert_val(global_capture_opts.all_ifaces, i, device);
 
-                if (dlg_window_present()) {
+                if (capture_dlg_window_present()) {
                     enable_selected_interface(g_strdup(if_name), device.selected);
                 }
                 if (interfaces_dialog_window_present()) {
@@ -820,27 +800,41 @@ void change_selection_for_all(gboolean enable)
 }
 #endif
 
+#ifdef HAVE_LIBPCAP
 void
-select_ifaces(void)
+change_interface_name(gchar *oldname, guint indx)
 {
-#ifdef HAVE_LIBPCAP
     GtkWidget        *view;
     GtkTreeModel     *model;
+    GtkTreeIter      iter;
+    interface_t      device;
     GtkTreeSelection *entry;
+    gchar            *optname;
+
+    view = g_object_get_data(G_OBJECT(welcome_hb), TREE_VIEW_INTERFACES);
+    entry = gtk_tree_view_get_selection(GTK_TREE_VIEW(view));
+    model = gtk_tree_view_get_model(GTK_TREE_VIEW(view));
 
-    if (global_capture_opts.num_selected > 0 && swindow) {
-        view = g_object_get_data(G_OBJECT(welcome_hb), TREE_VIEW_INTERFACES);
-        model = gtk_tree_view_get_model(GTK_TREE_VIEW(view));
-        entry = gtk_tree_view_get_selection(GTK_TREE_VIEW(view));
-        gtk_tree_model_foreach(GTK_TREE_MODEL(model), select_current_ifaces, (gpointer) entry);
-        gtk_widget_grab_focus(view);
+    device = g_array_index(global_capture_opts.all_ifaces, interface_t, indx);
+    if (gtk_tree_model_get_iter_first (model, &iter)) {
+        do {
+            gtk_tree_model_get(model, &iter, IFACE_NAME, &optname, -1);
+            if (strcmp(optname, oldname) == 0) {
+                gtk_list_store_set(GTK_LIST_STORE(model), &iter, ICON, gtk_image_get_pixbuf(GTK_IMAGE(capture_get_if_icon(&device))), IFACE_DESCR, device.display_name, IFACE_NAME, device.name, -1);
+                if (device.selected) {
+                    gtk_tree_selection_select_iter(entry, &iter);
+                }
+                break;
+            }
+        } while (gtk_tree_model_iter_next(model, &iter));
+        g_free(optname);
     }
-#endif
 }
+#endif
 
 #ifdef HAVE_PCAP_REMOTE
 void
-add_interface_to_list(guint index)
+add_interface_to_list(guint indx)
 {
     GtkWidget *view, *icon;
     GtkTreeModel *model;
@@ -849,7 +843,7 @@ add_interface_to_list(guint index)
     gchar *lines;
     interface_t device;
 
-    device = g_array_index(global_capture_opts.all_ifaces, interface_t, index);
+    device = g_array_index(global_capture_opts.all_ifaces, interface_t, indx);
     icon = pixbuf_to_widget(remote_sat_pb_data);
     view = g_object_get_data(G_OBJECT(welcome_hb), TREE_VIEW_INTERFACES);
     model = gtk_tree_view_get_model(GTK_TREE_VIEW(view));
@@ -862,49 +856,275 @@ add_interface_to_list(guint index)
 }
 #endif
 
-/* list the interfaces */
-void
-welcome_if_tree_load(void)
-{
 #ifdef HAVE_LIBPCAP
+static void
+clear_capture_box(void)
+{
+    GtkWidget         *item_hb;
+
+    item_hb = g_object_get_data(G_OBJECT(welcome_hb), CAPTURE_HB_BOX_INTERFACE_LIST);
+    if (item_hb) {
+        gtk_widget_destroy(item_hb);
+    }
+    item_hb = g_object_get_data(G_OBJECT(welcome_hb), CAPTURE_HB_BOX_START);
+    if (item_hb) {
+        gtk_widget_destroy(item_hb);
+    }
+    item_hb = g_object_get_data(G_OBJECT(welcome_hb), CAPTURE_HB_BOX_CAPTURE);
+    if (item_hb) {
+        gtk_widget_destroy(item_hb);
+    }
+    item_hb = g_object_get_data(G_OBJECT(welcome_hb), CAPTURE_HB_BOX_REFRESH);
+    if (item_hb) {
+        gtk_widget_destroy(item_hb);
+    }
+    if (if_scrolled_window) {
+        gtk_widget_destroy(if_scrolled_window);
+        if_scrolled_window = NULL;
+        if_view = NULL;
+    }
+}
+
+static void update_interface_scrolled_window_height(void)
+{
+    /* set the height of the scroll window that shows the interfaces
+     * based on the number of visible interfaces - up to a maximum of 10 interfaces */
+    guint i;
+    interface_t device;
+    int visible_interface_count=0;
+
+    if(if_scrolled_window==NULL){
+        return;
+    }
+
+    for (i = 0; i < global_capture_opts.all_ifaces->len; i++) {
+        device = g_array_index(global_capture_opts.all_ifaces, interface_t, i);
+        if (!device.hidden) {
+            visible_interface_count++;
+        }
+    }
+    if(visible_interface_count>10){
+        /* up to 10 interfaces will be visible at one time */
+        visible_interface_count=10;
+    }
+    if(visible_interface_count<2){
+        /* minimum space for two interfaces */
+        visible_interface_count=2;
+    }
+    gtk_widget_set_size_request(if_scrolled_window, FALSE, visible_interface_count*21+4);
+}
+
+static void
+update_capture_box(void)
+{
     guint               i;
     GtkListStore        *store = NULL;
     GtkTreeIter         iter;
-    GtkWidget           *view;
     GtkTreeSelection    *entry;
     interface_t         device;
     gboolean            changed = FALSE;
-    int                        error;
 
-    view = g_object_get_data(G_OBJECT(welcome_hb), TREE_VIEW_INTERFACES);
-    entry = gtk_tree_view_get_selection(GTK_TREE_VIEW(view));
-    gtk_tree_selection_unselect_all(entry);
+    entry = gtk_tree_view_get_selection(GTK_TREE_VIEW(if_view));
+    gtk_tree_selection_unselect_all(GTK_TREE_SELECTION(entry));
     store = gtk_list_store_new(NUMCOLUMNS, GDK_TYPE_PIXBUF, G_TYPE_STRING, G_TYPE_STRING);
 
-     gtk_list_store_clear(store);
-     gtk_tree_view_set_model(GTK_TREE_VIEW(if_view), GTK_TREE_MODEL (store));
-    /* LOAD THE INTERFACES */
-    if (global_capture_opts.all_ifaces->len == 0) {
-      scan_local_interfaces(&global_capture_opts, &error);
-    } else {
-        for (i = 0; i < global_capture_opts.all_ifaces->len; i++) {
-            device = g_array_index(global_capture_opts.all_ifaces, interface_t, i);
-            if (!device.hidden) {
-                gtk_list_store_append (store, &iter);
-                gtk_list_store_set (store, &iter, ICON, gtk_image_get_pixbuf(GTK_IMAGE(capture_get_if_icon(&device))), IFACE_DESCR, device.display_name, IFACE_NAME, device.name, -1);
-                if (device.selected) {
-                    gtk_tree_selection_select_iter(entry, &iter);
-                }
+    gtk_list_store_clear(store);
+    gtk_tree_view_set_model(GTK_TREE_VIEW(if_view), GTK_TREE_MODEL (store));
+    for (i = 0; i < global_capture_opts.all_ifaces->len; i++) {
+        device = g_array_index(global_capture_opts.all_ifaces, interface_t, i);
+        if (!device.hidden) {
+            gtk_list_store_append (store, &iter);
+            gtk_list_store_set (store, &iter, ICON, gtk_image_get_pixbuf(GTK_IMAGE(capture_get_if_icon(&device))), IFACE_DESCR, device.display_name, IFACE_NAME, device.name, -1);
+            if (device.selected) {
+                gtk_tree_selection_select_iter(entry, &iter);
             }
         }
-        changed = TRUE;
     }
-    gtk_tree_selection_set_select_function(entry, on_selection_changed, (gpointer)&changed, NULL);
-    if (gtk_widget_is_focus(view) && dlg_window_present()) {
-        update_all_rows();
+    update_interface_scrolled_window_height();
+    changed = TRUE;
+    gtk_tree_selection_set_select_function(GTK_TREE_SELECTION(entry), on_selection_changed, (gpointer)&changed, NULL);
+}
+
+static void
+refresh_interfaces_cb(GtkWidget *w _U_, gpointer user_data _U_)
+{
+  clear_capture_box();
+  refresh_local_interface_lists();
+}
+
+static void fill_capture_box(void)
+{
+    GtkWidget         *box_to_fill, *item_hb_refresh;
+    GtkWidget         *item_hb_interface_list, *item_hb_capture, *item_hb_start, *label, *w;
+    GtkTreeSelection  *selection;
+    GtkCellRenderer   *renderer;
+    GtkTreeViewColumn *column;
+    int               error = 0;
+    gchar             *label_text, *err_str;
+#ifdef _WIN32
+    DWORD reg_ret;
+    DWORD chimney_enabled = 0;
+    DWORD ce_size = sizeof(chimney_enabled);
+#endif
+
+    label = g_object_get_data(G_OBJECT(welcome_hb), CAPTURE_LABEL);
+    if (label) {
+        gtk_widget_destroy(label);
+    }
+    box_to_fill = g_object_get_data(G_OBJECT(welcome_hb), CAPTURE_VIEW);
+    if (global_capture_opts.all_ifaces->len > 0) {
+        item_hb_interface_list = welcome_button(WIRESHARK_STOCK_CAPTURE_INTERFACES,
+                                                "Interface List",
+                                                "Live list of the capture interfaces\n(counts incoming packets)",
+                                                "Same as Capture/Interfaces menu or toolbar item",
+                                                welcome_button_callback_helper, capture_if_cb);
+        gtk_box_pack_start(GTK_BOX(box_to_fill), item_hb_interface_list, FALSE, FALSE, 5);
+        if_scrolled_window = gtk_scrolled_window_new (NULL, NULL);
+        update_interface_scrolled_window_height();
+        gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(if_scrolled_window), GTK_SHADOW_IN);
+        gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(if_scrolled_window), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
+        g_object_set_data(G_OBJECT(welcome_hb), CAPTURE_HB_BOX_INTERFACE_LIST, item_hb_interface_list);
+
+        if_view = gtk_tree_view_new ();
+        g_object_set(G_OBJECT(if_view), "headers-visible", FALSE, NULL);
+        g_signal_connect(if_view, "row-activated", G_CALLBACK(options_interface_cb), (gpointer)welcome_hb);
+        g_object_set_data(G_OBJECT(welcome_hb), TREE_VIEW_INTERFACES, if_view);
+        column = gtk_tree_view_column_new();
+        renderer = gtk_cell_renderer_pixbuf_new();
+        gtk_tree_view_column_pack_start(column, renderer, FALSE);
+        gtk_tree_view_column_set_attributes(column, renderer, "pixbuf", ICON, NULL);
+        renderer = gtk_cell_renderer_text_new();
+        gtk_tree_view_column_pack_start(column, renderer, TRUE);
+        gtk_tree_view_column_set_attributes(column, renderer, "text", IFACE_DESCR, NULL);
+        gtk_tree_view_append_column(GTK_TREE_VIEW(if_view), column);
+        gtk_tree_view_column_set_resizable(gtk_tree_view_get_column(GTK_TREE_VIEW(if_view), 0), TRUE);
+        renderer = gtk_cell_renderer_text_new();
+        column = gtk_tree_view_column_new_with_attributes ("",
+                                                           GTK_CELL_RENDERER(renderer),
+                                                           "text", IFACE_NAME,
+                                                           NULL);
+        gtk_tree_view_append_column(GTK_TREE_VIEW(if_view), column);
+        gtk_tree_view_column_set_visible(column, FALSE);
+        selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(if_view));
+        gtk_tree_selection_set_mode(selection, GTK_SELECTION_MULTIPLE);
+        item_hb_start = welcome_button(WIRESHARK_STOCK_CAPTURE_START,
+                                       "Start",
+                                       "Choose one or more interfaces to capture from, then <b>Start</b>",
+                                       "Same as Capture/Interfaces with default options",
+                                       (welcome_button_callback_t)capture_if_start, (gpointer)if_view);
+        gtk_box_pack_start(GTK_BOX(box_to_fill), item_hb_start, FALSE, FALSE, 5);
+        update_capture_box();
+        gtk_container_add (GTK_CONTAINER (if_scrolled_window), if_view);
+        gtk_container_add(GTK_CONTAINER(box_to_fill), if_scrolled_window);
+        g_object_set_data(G_OBJECT(welcome_hb), CAPTURE_HB_BOX_START, item_hb_start);
+
+        item_hb_capture = welcome_button(WIRESHARK_STOCK_CAPTURE_OPTIONS,
+                                         "Capture Options",
+                                         "Start a capture with detailed options",
+                                         "Same as Capture/Options menu or toolbar item",
+                                         welcome_button_callback_helper, capture_prep_cb);
+        gtk_box_pack_start(GTK_BOX(box_to_fill), item_hb_capture, FALSE, FALSE, 5);
+        g_object_set_data(G_OBJECT(welcome_hb), CAPTURE_HB_BOX_CAPTURE, item_hb_capture);
+#ifdef _WIN32
+        /* Check for chimney offloading */
+        reg_ret = RegQueryValueEx(HKEY_LOCAL_MACHINE,
+                                  _T("SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters\\EnableTCPChimney"),
+                                  NULL, NULL, (LPBYTE) &chimney_enabled, &ce_size);
+        if (reg_ret == ERROR_SUCCESS && chimney_enabled) {
+            welcome_button(WIRESHARK_STOCK_WIKI,
+                           "Offloading Detected",
+                           "TCP Chimney offloading is enabled. You \nmight not capture much data.",
+                           topic_online_url(ONLINEPAGE_CHIMNEY),
+                           topic_menu_cb, GINT_TO_POINTER(ONLINEPAGE_CHIMNEY));
+            gtk_box_pack_start(GTK_BOX(box_to_fill), item_hb_capture, FALSE, FALSE, 5);
+        }
+#endif /* _WIN32 */
+    } else {
+       if (if_view) {
+           clear_capture_box();
+       }
+
+       /* run capture_interface_list(), not to get the interfaces, but to detect
+        * any errors, if there is an error, display an appropriate message in the gui */
+       capture_interface_list(&error, &err_str);
+       switch (error) {
+
+       case CANT_GET_INTERFACE_LIST:
+            label_text = g_strdup_printf("No interface can be used for capturing in "
+                                         "this system with the current configuration.\n\n"
+                                         "(%s)\n"
+                                         "\n"
+                                         "See Capture Help below for details.",
+                                         err_str);
+            break;
+
+       case NO_INTERFACES_FOUND:
+            label_text = g_strdup("No interface can be used for capturing in "
+                                  "this system with the current configuration.\n"
+                                  "\n"
+                                  "See Capture Help below for details.");
+            break;
+
+       case DONT_HAVE_PCAP:
+            label_text = g_strdup("WinPcap doesn't appear to be installed.  "
+                                  "In order to capture packets, WinPcap "
+                                  "must be installed; see\n"
+                                  "\n"
+#if GTK_CHECK_VERSION(2,18,0)
+                                  "        <a href=\"http://www.winpcap.org/\">http://www.winpcap.org/</a>\n"
+#else
+                                  "        http://www.winpcap.org/\n"
+#endif
+                                  "\n"
+                                  "or the mirror at\n"
+                                  "\n"
+#if GTK_CHECK_VERSION(2,18,0)
+                                  "        <a href=\"http://www.mirrors.wiretapped.net/security/packet-capture/winpcap/\">http://www.mirrors.wiretapped.net/security/packet-capture/winpcap/</a>\n"
+#else
+                                  "        http://www.mirrors.wiretapped.net/security/packet-capture/winpcap/\n"
+#endif
+                                  "\n"
+                                  "or the mirror at\n"
+                                  "\n"
+#if GTK_CHECK_VERSION(2,18,0)
+                                  "        <a href=\"http://winpcap.cs.pu.edu.tw/\">http://winpcap.cs.pu.edu.tw/</a>\n"
+#else
+                                  "        http://winpcap.cs.pu.edu.tw/\n"
+#endif
+                                  "\n"
+                                  "for a downloadable version of WinPcap "
+                                  "and for instructions on how to install "
+                                  "WinPcap.");
+            break;
+
+        default:
+            label_text = g_strdup_printf("Error = %d; this \"can't happen\".", error);
+            break;
+        }
+        if (err_str != NULL)
+          g_free(err_str);
+        w = gtk_label_new(label_text);
+        gtk_label_set_markup(GTK_LABEL(w), label_text);
+        gtk_label_set_line_wrap(GTK_LABEL(w), TRUE);
+        g_free (label_text);
+        gtk_misc_set_alignment (GTK_MISC(w), 0.0f, 0.0f);
+        gtk_box_pack_start(GTK_BOX(box_to_fill), w, FALSE, FALSE, 5);
+#if GTK_CHECK_VERSION(2,18,0)
+        g_signal_connect(w, "activate-link", G_CALLBACK(activate_link_cb), NULL);
+#endif
+        g_object_set_data(G_OBJECT(welcome_hb), CAPTURE_LABEL, w);
+        if (error == CANT_GET_INTERFACE_LIST || error == NO_INTERFACES_FOUND) {
+          item_hb_refresh = welcome_button(GTK_STOCK_REFRESH,
+                                           "Refresh Interfaces",
+                                           "Get a new list of the local interfaces.",
+                                           "Click the title to get a new list of interfaces",
+                                           welcome_button_callback_helper, refresh_interfaces_cb);
+          gtk_box_pack_start(GTK_BOX(box_to_fill), item_hb_refresh, FALSE, FALSE, 5);
+          g_object_set_data(G_OBJECT(welcome_hb), CAPTURE_HB_BOX_REFRESH, item_hb_refresh);
+        }
     }
-#endif  /* HAVE_LIBPCAP */
 }
+#endif  /* HAVE_LIBPCAP */
 
 
 /* reload the list of interfaces */
@@ -913,7 +1133,20 @@ welcome_if_panel_reload(void)
 {
 #ifdef HAVE_LIBPCAP
     if (welcome_hb) {
-        welcome_if_tree_load();
+        /* If we have a list of interfaces, and if the current interface
+           list is non-empty, just update the interface list.  Otherwise,
+           create it (as we didn't have it) or destroy it (as we won't
+           have it). */
+        if (if_view && if_scrolled_window && global_capture_opts.all_ifaces->len > 0) {
+            update_capture_box();
+        } else {
+            GtkWidget *item_hb;
+            item_hb = g_object_get_data(G_OBJECT(welcome_hb), CAPTURE_HB_BOX_REFRESH);
+            if (item_hb) {
+                gtk_widget_destroy(item_hb);
+            }
+            fill_capture_box();
+        }
         gtk_widget_show_all(welcome_hb);
     }
 #endif  /* HAVE_LIBPCAP */
@@ -946,7 +1179,8 @@ static void capture_if_start(GtkWidget *w _U_, gpointer data _U_)
             break;
         }
     }
-    airpcap_set_toolbar_start_capture(airpcap_if_active);
+    if (airpcap_if_active)
+      airpcap_set_toolbar_start_capture(airpcap_if_active);
 #endif
     capture_start_cb(NULL, NULL);
 }
@@ -975,25 +1209,13 @@ welcome_new(void)
     GtkWidget *header;
     GtkWidget *topic_vb;
     GtkWidget *topic_to_fill;
-    GtkWidget *file_child_box;
+    GtkWidget *topic_capture_to_fill;
     gchar     *label_text;
-#ifdef HAVE_LIBPCAP
-    int       error;
-#endif
-#ifdef _WIN32
-    LONG reg_ret;
-    DWORD chimney_enabled = 0;
-    DWORD ce_size = sizeof(chimney_enabled);
-#endif
-#ifdef HAVE_LIBPCAP
-    GtkTreeSelection *selection;
-    GtkCellRenderer *renderer;
-    GtkTreeViewColumn *column;
-#endif
+    GtkWidget *file_child_box;
 
     /* prepare colors */
 #if 0
-       /* Allocating collor isn't necessary? */
+    /* Allocating color isn't necessary? */
 
     /* "page" background */
     get_color(&welcome_bg);
@@ -1019,12 +1241,12 @@ welcome_new(void)
 #endif
     welcome_scrollw = scrolled_window_new(NULL, NULL);
 
-    welcome_vb = gtk_vbox_new(FALSE, 0);
+    welcome_vb = ws_gtk_box_new(GTK_ORIENTATION_VERTICAL, 0, FALSE);
 
     welcome_eb = gtk_event_box_new();
     gtk_container_add(GTK_CONTAINER(welcome_eb), welcome_vb);
 #if GTK_CHECK_VERSION(3,0,0)
-    gtk_widget_override_background_color(welcome_eb, GTK_STATE_NORMAL, &rgba_welcome_bg);
+    gtk_widget_override_background_color(welcome_eb, GTK_STATE_FLAG_NORMAL, &rgba_welcome_bg);
 #else
     gtk_widget_modify_bg(welcome_eb, GTK_STATE_NORMAL, &welcome_bg);
 #endif
@@ -1033,147 +1255,28 @@ welcome_new(void)
     gtk_box_pack_start(GTK_BOX(welcome_vb), header, FALSE, FALSE, 0);
 
     /* content */
-    welcome_hb = gtk_hbox_new(FALSE, 10);
+    welcome_hb = ws_gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 10, FALSE);
     gtk_container_set_border_width(GTK_CONTAINER(welcome_hb), 10);
     gtk_box_pack_start(GTK_BOX(welcome_vb), welcome_hb, TRUE, TRUE, 0);
 
 
     /* column capture */
-    column_vb = gtk_vbox_new(FALSE, 10);
+    column_vb = ws_gtk_box_new(GTK_ORIENTATION_VERTICAL, 10, FALSE);
 #if GTK_CHECK_VERSION(3,0,0)
-    gtk_widget_override_background_color(column_vb, GTK_STATE_NORMAL, &rgba_welcome_bg);
+    gtk_widget_override_background_color(column_vb, GTK_STATE_FLAG_NORMAL, &rgba_welcome_bg);
 #else
     gtk_widget_modify_bg(column_vb, GTK_STATE_NORMAL, &welcome_bg);
 #endif
     gtk_box_pack_start(GTK_BOX(welcome_hb), column_vb, TRUE, TRUE, 0);
 
     /* capture topic */
-    topic_vb = welcome_topic_new("Capture", &topic_to_fill);
+    topic_vb = welcome_topic_new("Capture", &topic_capture_to_fill);
     gtk_box_pack_start(GTK_BOX(column_vb), topic_vb, TRUE, TRUE, 0);
+    g_object_set_data(G_OBJECT(welcome_hb), CAPTURE_VIEW, topic_capture_to_fill);
 
 #ifdef HAVE_LIBPCAP
-    if (global_capture_opts.all_ifaces->len == 0) {
-        scan_local_interfaces(&global_capture_opts, &error);
-    }
-    if (global_capture_opts.all_ifaces->len > 0) {
-        item_hb = welcome_button(WIRESHARK_STOCK_CAPTURE_INTERFACES,
-            "Interface List",
-            "Live list of the capture interfaces\n(counts incoming packets)",
-            "Same as Capture/Interfaces menu or toolbar item",
-            welcome_button_callback_helper, capture_if_cb);
-        gtk_box_pack_start(GTK_BOX(topic_to_fill), item_hb, FALSE, FALSE, 5);
-
-        swindow = gtk_scrolled_window_new (NULL, NULL);
-        gtk_widget_set_size_request(swindow, FALSE, 100);
-        gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(swindow), GTK_SHADOW_IN);
-        gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(swindow), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
-
-        if_view = gtk_tree_view_new ();
-        g_object_set(G_OBJECT(if_view), "headers-visible", FALSE, NULL);
-        g_signal_connect(if_view, "row-activated", G_CALLBACK(options_interface_cb), (gpointer)welcome_hb);
-        g_object_set_data(G_OBJECT(welcome_hb), TREE_VIEW_INTERFACES, if_view);
-        column = gtk_tree_view_column_new();
-        renderer = gtk_cell_renderer_pixbuf_new();
-        gtk_tree_view_column_pack_start(column, renderer, FALSE);
-        gtk_tree_view_column_set_attributes(column, renderer, "pixbuf", ICON, NULL);
-        renderer = gtk_cell_renderer_text_new();
-        gtk_tree_view_column_pack_start(column, renderer, TRUE);
-        gtk_tree_view_column_set_attributes(column, renderer, "text", IFACE_DESCR, NULL);
-        gtk_tree_view_append_column(GTK_TREE_VIEW(if_view), column);
-        gtk_tree_view_column_set_resizable(gtk_tree_view_get_column(GTK_TREE_VIEW(if_view), 0), TRUE);
-        renderer = gtk_cell_renderer_text_new();
-        column = gtk_tree_view_column_new_with_attributes ("",
-                                               GTK_CELL_RENDERER(renderer),
-                                               "text", IFACE_NAME,
-                                               NULL);
-        gtk_tree_view_append_column(GTK_TREE_VIEW(if_view), column);
-        gtk_tree_view_column_set_visible(column, FALSE);
-        selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(if_view));
-        gtk_tree_selection_set_mode(selection, GTK_SELECTION_MULTIPLE);
-        item_hb = welcome_button(WIRESHARK_STOCK_CAPTURE_START,
-            "Start",
-            "Choose one or more interfaces to capture from, then <b>Start</b>",
-            "Same as Capture/Interfaces with default options",
-            (welcome_button_callback_t)capture_if_start, (gpointer)if_view);
-        gtk_box_pack_start(GTK_BOX(topic_to_fill), item_hb, FALSE, FALSE, 5);
-        welcome_if_tree_load();
-        gtk_container_add (GTK_CONTAINER (swindow), if_view);
-        gtk_container_add(GTK_CONTAINER(topic_to_fill), swindow);
-
-        item_hb = welcome_button(WIRESHARK_STOCK_CAPTURE_OPTIONS,
-                "Capture Options",
-                "Start a capture with detailed options",
-                "Same as Capture/Options menu or toolbar item",
-                welcome_button_callback_helper, capture_prep_cb);
-        gtk_box_pack_start(GTK_BOX(topic_to_fill), item_hb, FALSE, FALSE, 5);
-#ifdef _WIN32
-        /* Check for chimney offloading */
-        reg_ret = RegQueryValueEx(HKEY_LOCAL_MACHINE,
-                                  _T("SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters\\EnableTCPChimney"),
-                                  NULL, NULL, (LPBYTE) &chimney_enabled, &ce_size);
-        if (reg_ret == ERROR_SUCCESS && chimney_enabled) {
-            item_hb = welcome_button(WIRESHARK_STOCK_WIKI,
-                    "Offloading Detected",
-                    "TCP Chimney offloading is enabled. You \nmight not capture much data.",
-                    topic_online_url(ONLINEPAGE_CHIMNEY),
-                    topic_menu_cb, GINT_TO_POINTER(ONLINEPAGE_CHIMNEY));
-            gtk_box_pack_start(GTK_BOX(topic_to_fill), item_hb, FALSE, FALSE, 5);
-        }
-#endif /* _WIN32 */
-    } else {
-       if (error != NO_INTERFACES_FOUND) {
-            if (error == CANT_GET_INTERFACE_LIST) {
-                label_text = g_strdup("No interface can be used for capturing in "
-                                      "this system with the current configuration.\n"
-                                      "\n"
-                                      "See Capture Help below for details.");
-            } else {
-                label_text = g_strdup("WinPcap doesn't appear to be installed.  "
-                                      "In order to capture packets, WinPcap "
-                                      "must be installed; see\n"
-                                      "\n"
-#if GTK_CHECK_VERSION(2,18,0)
-                                      "        <a href=\"http://www.winpcap.org/\">http://www.winpcap.org/</a>\n"
-#else
-                                      "        http://www.winpcap.org/\n"
-#endif
-                                      "\n"
-                                      "or the mirror at\n"
-                                      "\n"
-#if GTK_CHECK_VERSION(2,18,0)
-                                      "        <a href=\"http://www.mirrors.wiretapped.net/security/packet-capture/winpcap/\">http://www.mirrors.wiretapped.net/security/packet-capture/winpcap/</a>\n"
-#else
-                                      "        http://www.mirrors.wiretapped.net/security/packet-capture/winpcap/\n"
-#endif
-                                      "\n"
-                                      "or the mirror at\n"
-                                      "\n"
-#if GTK_CHECK_VERSION(2,18,0)
-                                      "        <a href=\"http://winpcap.cs.pu.edu.tw/\">http://winpcap.cs.pu.edu.tw/</a>\n"
-#else
-                                      "        http://winpcap.cs.pu.edu.tw/\n"
-#endif
-                                      "\n"
-                                      "for a downloadable version of WinPcap "
-                                      "and for instructions on how to install "
-                                      "WinPcap.");
-            }
-        } else {
-            label_text = g_strdup("No interface can be used for capturing in "
-                                  "this system with the current configuration.\n"
-                                  "\n"
-                                  "See Capture Help below for details.");
-        }
-        w = gtk_label_new(label_text);
-        gtk_label_set_markup(GTK_LABEL(w), label_text);
-        gtk_label_set_line_wrap(GTK_LABEL(w), TRUE);
-        g_free (label_text);
-        gtk_misc_set_alignment (GTK_MISC(w), 0.0f, 0.0f);
-        gtk_box_pack_start(GTK_BOX(topic_to_fill), w, FALSE, FALSE, 5);
-#if GTK_CHECK_VERSION(2,18,0)
-        g_signal_connect(w, "activate-link", G_CALLBACK(activate_link_cb), NULL);
-#endif
-    }
+    fill_in_local_interfaces();
+    fill_capture_box();
 
     /* capture help topic */
     topic_vb = welcome_topic_new("Capture Help", &topic_to_fill);
@@ -1198,12 +1301,12 @@ welcome_new(void)
     gtk_label_set_markup(GTK_LABEL(w), label_text);
     g_free (label_text);
     gtk_misc_set_alignment (GTK_MISC(w), 0.0f, 0.0f);
-    gtk_box_pack_start(GTK_BOX(topic_to_fill), w, FALSE, FALSE, 5);
+    gtk_box_pack_start(GTK_BOX(topic_capture_to_fill), w, FALSE, FALSE, 5);
 #endif  /* HAVE_LIBPCAP */
 
     /* fill bottom space */
     w = gtk_label_new("");
-    gtk_box_pack_start(GTK_BOX(topic_to_fill), w, TRUE, TRUE, 0);
+    gtk_box_pack_start(GTK_BOX(topic_capture_to_fill), w, TRUE, TRUE, 0);
 
 
     /* column files */
@@ -1225,7 +1328,7 @@ welcome_new(void)
     gtk_misc_set_alignment (GTK_MISC(w), 0.0f, 0.0f);
     gtk_box_pack_start(GTK_BOX(topic_to_fill), w, FALSE, FALSE, 5);
 
-    file_child_box = gtk_vbox_new(FALSE, 1);
+    file_child_box = ws_gtk_box_new(GTK_ORIENTATION_VERTICAL, 1, FALSE);
     /* 17 file items or 300 pixels height is about the size */
     /* that still fits on a screen of about 1000*700 */
     welcome_file_panel_vb = scroll_box_dynamic_new(GTK_WIDGET(file_child_box), 17, 300);
@@ -1244,7 +1347,7 @@ welcome_new(void)
 
 
     /* column online */
-    column_vb = gtk_vbox_new(FALSE, 10);
+    column_vb = ws_gtk_box_new(GTK_ORIENTATION_VERTICAL, 10, FALSE);
     gtk_box_pack_start(GTK_BOX(welcome_hb), column_vb, TRUE, TRUE, 0);
 
     /* topic online */
@@ -1317,5 +1420,3 @@ GtkWidget* get_welcome_window(void)
 {
     return welcome_hb;
 }
-
-