kerenlshark: Only set cursor or freeze window if parent exists

If parent_window is NULL have both set_cursor and freeze do nothing.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 16 insertions, 5 deletions

diff --git a/trace-dialog.c b/trace-dialog.c
index 1bbbac6..d5d8c04 100644
--- a/trace-dialog.c
+++ b/trace-dialog.c
@@ -91,9 +91,14 @@ void trace_dialog_register_window(GtkWidget *window)
 
 void trace_set_cursor(GdkCursorType type)
 {
-        GdkWindow *window = GTK_WIDGET(parent_window)->window;
+        GdkWindow *window;
         GdkCursor *cursor;
 
+        if (!parent_window)
+                return;
+
+        window = GTK_WIDGET(parent_window)->window;
+
         if (!parent_cursor)
                 parent_cursor = gdk_window_get_cursor(window);
         else {
@@ -111,9 +116,13 @@ void trace_set_cursor(GdkCursorType type)
 
 void trace_put_cursor(void)
 {
-        GdkWindow *window = GTK_WIDGET(parent_window)->window;
+        GdkWindow *window;
         GdkCursor *cursor;
-        
+
+        if (!parent_window)
+                return;
+
+        window = GTK_WIDGET(parent_window)->window;
         cursor = gdk_window_get_cursor(window);
         if (cursor && cursor != parent_cursor)
                 gdk_cursor_unref(cursor);
@@ -122,12 +131,14 @@ void trace_put_cursor(void)
 
 void trace_freeze_all(void)
 {
-        gtk_widget_set_sensitive(GTK_WIDGET(parent_window), FALSE);
+        if (parent_window)
+                gtk_widget_set_sensitive(GTK_WIDGET(parent_window), FALSE);
 }
 
 void trace_unfreeze_all(void)
 {
-        gtk_widget_set_sensitive(GTK_WIDGET(parent_window), TRUE);
+        if (parent_window)
+                gtk_widget_set_sensitive(GTK_WIDGET(parent_window), TRUE);
 }
 
 /**