Nicer screen when no images are there to view

git-svn-id: http://svn.cactuscode.org/arrangements/CactusConnect/HTTPDExtra/trunk@12 61ea717e-8e0c-4c3c-b38e-e9c67f54f1f1

1 files changed, 29 insertions, 9 deletions

diff --git a/src/IO.c b/src/IO.c
index 36dbe57..8f59350 100644
--- a/src/IO.c
+++ b/src/IO.c
@@ -365,6 +365,7 @@ static int SendFilePage(cGH *cctkGH, httpRequest *request, void *data)
 static int ViewportFilePage(cGH *cctkGH, httpRequest *request, void *data)
 {
   int retval;
+  int foundone;
   char message[4098];
   struct httpuFileList *list;
 
@@ -400,29 +401,48 @@ static int ViewportFilePage(cGH *cctkGH, httpRequest *request, void *data)
 	 "<p>Many IO methods have <i>steerable</i> parameters which "
 	 "allow you to e.g. add fields and customise behaviour."
 	 "Depending on your authorisation, you can access the"
-	 " <a href=\"/Parameters/index.html\">parameter steering page</a></p>"
-	 "<center>"
-         "<table cellspacing=5 cellpadding=5 border=0\n>"
-         "<tr><th>Variable<br>File Name</th><th>Description</th><th>Image</th></tr>\n");
+	 " <a href=\"/Parameters/index.html\">parameter steering page</a></p>");
 
   HTTP_Write(request, message, strlen(message));
 
+  foundone = 0;
   for (list = filelist; list; list = list->next)
   {
     if (CCTK_Equals(list->data.mimetype,"image/jpeg"))
     {
+      if (!foundone)
+      {
+	strcpy(message,
+	       "<center>"
+	       "<table cellspacing=5 cellpadding=5 border=0\n>"
+	       "<tr><th>Variable<br>File Name</th>\n"
+	       "<th>Description</th><th>Image</th></tr>\n");
+	HTTP_Write(request, message, strlen(message));
+	foundone = 1;
+      }
       sprintf(message, 
-	      "<tr><td valign=center><small>%s<br>"
-	      "<A HREF=\"/Output/%s\">%s</A></small></td>"
-	      "<td valign=center>%s</td>"
-	      "<td valign=center><img src=\"%s\"></td></tr>\n",
+	      "<tr>\n"
+	      "<td valign=center><small>%s<br>\n"
+	      "<A HREF=\"/Output/%s\">%s</A>\n"
+	      "</small></td>\n"
+	      "<td valign=center>%s</td>\n"
+	      "<td valign=center><img src=\"%s\"></td>\n"
+	      "</tr>\n",
 	      list->data.varname,list->linkname, list->filename, 
 	      list->data.description,list->linkname);
       HTTP_Write(request, message, strlen(message));
     }
   }
 
-  strcpy(message,"</table></center>");
+  if (!foundone)
+  {
+    strcpy(message,"<center><b><p>No viewable images registered!</p>"
+	   "<b><center>\n");
+    HTTP_Write(request, message, strlen(message));
+  }
+
+
+  strcpy(message,"</table>\n</center>\n");
   HTTP_Write(request, message, strlen(message));
   
   /* Write out the footer part. */