good transient for background computation msg

[lttv.git] / ltt / branches / poly / lttv / modules / gui / lttvwindow / lttvwindow / lttvwindowtraces.c

diff --git a/ltt/branches/poly/lttv/modules/gui/lttvwindow/lttvwindow/lttvwindowtraces.c b/ltt/branches/poly/lttv/modules/gui/lttvwindow/lttvwindow/lttvwindowtraces.c
index 511c6c93a618413e8f480becd987be6bf34f6390..76992022167afc01054e5d9ba87e151332708922 100644 (file)
--- a/ltt/branches/poly/lttv/modules/gui/lttvwindow/lttvwindow/lttvwindowtraces.c
+++ b/ltt/branches/poly/lttv/modules/gui/lttvwindow/lttvwindow/lttvwindowtraces.c
@@ -38,13 +38,17 @@
 #include <lttv/tracecontext.h>
 #include <lttvwindow/lttvwindowtraces.h>
 #include <lttvwindow/lttvwindow.h> // for CHUNK_NUM_EVENTS
+#include <lttvwindow/mainwindow-private.h> /* for main window structure */
 
+extern GSList * g_main_window_list;
 
 typedef struct _BackgroundRequest {
   LttvAttributeName module_name; /* Hook path in global attributes,
                                     where all standard hooks under computation/.
                                     i.e. modulename */
   LttvTrace *trace; /* trace concerned */
+  GtkWidget *dialog;  /* Dialog linked with the request, may be NULL */
+  GtkWidget *parent_window; /* Parent window the dialog must be transient for */
 } BackgroundRequest;
 
 typedef struct _BackgroundNotify {
@@ -293,19 +297,26 @@ void lttvwindowtraces_remove_trace(LttvTrace *trace)
   }
 }
 
+static void destroy_dialog(BackgroundRequest *bg_req)
+{
+  gtk_widget_destroy(bg_req->dialog);
+  bg_req->dialog = NULL;
+}
+
 
 /**
  * Function to request data from a specific trace
  *
  * The memory allocated for the request will be managed by the API.
  * 
+ * @param widget the current Window
  * @param trace the trace to compute
  * @param module_name the name of the module which registered global computation
  *                    hooks.
  */
 
 void lttvwindowtraces_background_request_queue
-                     (LttvTrace *trace, gchar *module_name)
+                     (GtkWidget *widget, LttvTrace *trace, gchar *module_name)
 {
   BackgroundRequest *bg_req;
   LttvAttribute *attribute = lttv_trace_attribute(trace);
@@ -349,7 +360,25 @@ void lttvwindowtraces_background_request_queue
                   trace,
                   NULL);
   /* FIXME : show message in status bar, need context and message id */
-  g_info("Background computation started for trace %p", trace);
+  g_info("Background computation for %s started for trace %p", module_name,
+      trace);
+  GtkWidget *dialog = 
+    gtk_message_dialog_new(
+      GTK_WINDOW(widget),
+      GTK_DIALOG_DESTROY_WITH_PARENT,
+      GTK_MESSAGE_INFO, GTK_BUTTONS_OK, 
+      "Background computation for %s started for trace %s", 
+      module_name,
+      g_quark_to_string(ltt_trace_name(lttv_trace(trace))));
+  gtk_window_set_transient_for(GTK_WINDOW(dialog), GTK_WINDOW(widget));
+  g_signal_connect_swapped (dialog, "response",
+      G_CALLBACK (destroy_dialog),
+      bg_req);
+  bg_req->dialog = dialog;
+  /* the parent window might vanish : only use this pointer for a 
+   * comparison with existing windows */
+  bg_req->parent_window = gtk_widget_get_toplevel(widget);
+  gtk_widget_show(dialog);
 }
 
 /**
@@ -398,6 +427,37 @@ void lttvwindowtraces_background_request_remove
   }
 }
  
+/**
+ * Find a background request in a trace
+ *
+ */
+
+gboolean lttvwindowtraces_background_request_find
+                     (LttvTrace *trace, gchar *module_name)
+{
+  LttvAttribute *attribute = lttv_trace_attribute(trace);
+  LttvAttributeValue value;
+  GSList *iter = NULL;
+  GSList **slist;
+
+  g_assert(lttv_iattribute_find(LTTV_IATTRIBUTE(attribute),
+                                LTTV_REQUESTS_QUEUE,
+                                LTTV_POINTER,
+                                &value));
+  slist = (GSList**)(value.v_pointer);
+
+  for(iter=*slist;iter!=NULL;) {
+    BackgroundRequest *bg_req = 
+              (BackgroundRequest *)iter->data;
+
+    if(bg_req->module_name == g_quark_from_string(module_name)) {
+      return TRUE;
+    } else {
+      iter=g_slist_next(iter);
+    }
+  }
+  return FALSE;
+}
  
 /**
  * Register a callback to be called when requested data is passed in the next
@@ -883,6 +943,12 @@ gboolean lttvwindowtraces_get_ready(LttvAttributeName module_name,
     return TRUE;
 }
 
+static gint find_window_widget(MainWindow *a, GtkWidget *b)
+{
+  if(a->mwindow == b) return 0;
+  else return -1;
+}
+
 
 /* lttvwindowtraces_process_pending_requests
  * 
@@ -1245,6 +1311,32 @@ gboolean lttvwindowtraces_process_pending_requests(LttvTrace *trace)
             LttvHooks *after_request = (LttvHooks*)*(value.v_pointer);
 
             if(after_request != NULL) lttv_hooks_call(after_request, tsc);
+            
+            if(bg_req->dialog != NULL)
+              gtk_widget_destroy(bg_req->dialog);
+            GtkWidget *parent_window;
+            if(g_slist_find_custom(g_main_window_list,
+                  bg_req->parent_window,
+                  (GCompareFunc)find_window_widget))
+              parent_window = GTK_WIDGET(bg_req->parent_window);
+            else
+              parent_window = NULL;
+
+            GtkWidget *dialog = 
+              gtk_message_dialog_new(GTK_WINDOW(parent_window),
+                GTK_DIALOG_DESTROY_WITH_PARENT,
+                GTK_MESSAGE_INFO, GTK_BUTTONS_OK, 
+                "Background computation %s finished for trace %s", 
+                g_quark_to_string(bg_req->module_name),
+                g_quark_to_string(ltt_trace_name(lttv_trace(bg_req->trace))));
+            if(parent_window != NULL)
+              gtk_window_set_transient_for(GTK_WINDOW(dialog),
+                  GTK_WINDOW(parent_window));
+            g_signal_connect_swapped (dialog, "response",
+                G_CALLBACK (gtk_widget_destroy),
+                dialog);
+            gtk_widget_show(dialog);
+
             /* - remove request */
             remove = TRUE;
             free_data = TRUE;
@@ -1303,6 +1395,7 @@ gboolean lttvwindowtraces_process_pending_requests(LttvTrace *trace)
           g_debug("Background computation scheduler stopped");
           g_info("Background computation finished for trace %p", trace);
           /* FIXME : remove status bar info, need context id and message id */
+
           ret_val = FALSE;
         } else {
           ret_val = TRUE;