jsrrdgraph: RrdGraph.js: splitting RrdGraph.prototype.graph_paint into init, fetch and draw

1 files changed, 13 insertions, 3 deletions

diff --git a/js/RrdGraph.js b/js/RrdGraph.js
index cd422fd..235b35f 100644
--- a/js/RrdGraph.js
+++ b/js/RrdGraph.js
@@ -2541,7 +2541,7 @@ RrdGraph.prototype.graph_size_location = function (elements)
         return 0;
 };
 
-RrdGraph.prototype.graph_paint = function()
+RrdGraph.prototype.graph_paint_init = function()
 {
         if (this.logarithmic && this.minval <= 0)
                 throw new RrdGraphError("for a logarithmic yaxis you must specify a lower-limit > 0");
@@ -2573,11 +2573,13 @@ RrdGraph.prototype.graph_paint = function()
 //      this.gdes[i].end_orig = this.end;
         }
 
+}
+
+RrdGraph.prototype.graph_paint_draw = function()
+{
         var areazero = 0.0
         var lastgdes = null;
 
-        if (this.data_fetch() === -1)
-                return -1;
         if (this.data_calc() === -1)
                 return -1;
         var i = this.print_calc();
@@ -2825,6 +2827,14 @@ RrdGraph.prototype.graph_paint = function()
         return 0;
 };
 
+RrdGraph.prototype.graph_paint = function ()
+{
+        this.graph_paint_init()
+        if (this.data_fetch() === -1)
+                return -1;
+        return this.graph_paint_draw()
+};
+
 RrdGraph.prototype.find_var = function(key)
 {
         for (var ii = 0, gdes_c = this.gdes.length; ii < gdes_c; ii++) {