From ff209db7356f4a943e2f6f77d79e531e2a34dcdd Mon Sep 17 00:00:00 2001
From: luigser <luigser@gmail.com>
Date: Fri, 22 Jan 2016 13:33:29 +0100
Subject: [PATCH] graph updates

---
 datalets/graph-datalet/graph-datalet.html | 29 +++++++++++++++--------------
 1 file changed, 15 insertions(+), 14 deletions(-)

diff --git a/datalets/graph-datalet/graph-datalet.html b/datalets/graph-datalet/graph-datalet.html
index d59b6a4..4c9fbca 100755
--- a/datalets/graph-datalet/graph-datalet.html
+++ b/datalets/graph-datalet/graph-datalet.html
@@ -154,7 +154,7 @@ Example:
                 }
             },
 
-            buildGraph: function (t){
+            buildGraph: function (){
 
                 this.svg = this.svg.append("g")
                                    .call(d3.behavior.zoom().scaleExtent([.25, 20]).on("zoom", this.zoom))
@@ -180,16 +180,16 @@ Example:
                         .attr("height", this.height);
 
 
-                var graph = {};
+               /* var graph = {};
 
                 graph.nodes = t.nodes;
-                graph.links = t.links;
+                graph.links = t.links;*/
 
                 //pezzotto
-                for(var i =0; i < graph.nodes.length; i++){
+                for(var i =0; i < this.graph.nodes.length; i++){
                     this.svg.append("defs")
                                .append("pattern")
-                                  .attr("id","image_" + graph.nodes[i].id)
+                                  .attr("id","image_" + this.graph.nodes[i].id)
                                   .attr("patternUnits","objectBoundingBox")
                                   .attr("height","40")
                                   .attr("width","40")
@@ -198,16 +198,16 @@ Example:
                                      .attr("y","0")
                                      .attr("height","30")
                                      .attr("width","30")
-                                     .attr("xlink:href", graph.nodes[i].image);
+                                     .attr("xlink:href", this.graph.nodes[i].image);
                 }
                 //end pezzotto
 
-                force = d3.layout.force().nodes(graph.nodes).links(graph.links).size([this.width, this.height]).charge(-1e3).friction(.7).linkDistance(function (t)
+                force = d3.layout.force().nodes(this.graph.nodes).links(this.graph.links).size([this.width, this.height]).charge(-1e3).friction(.7).linkDistance(function (t)
                 {
                     return t.value ? t.value : 80
                 }).on("tick", this.tick).start();
 
-                this.glinks = this.svg.selectAll(".link").data(graph.links).enter().append("line").attr("class", "link");
+                this.glinks = this.svg.selectAll(".link").data(this.graph.links).enter().append("line").attr("class", "link");
 
                 this.svg.selectAll(".link")
                         .attr("style", function(t){
@@ -217,7 +217,7 @@ Example:
                             return "stroke-width:" + (t.size ? t.size : 1.0) + "px";
                         });
 
-                this.gnodes = this.svg.selectAll(".node").data(graph.nodes).enter().append("g")
+                this.gnodes = this.svg.selectAll(".node").data(this.graph.nodes).enter().append("g")
                                                                                             .attr("class", function (t) { return t.fixed ? "node fixed" : "node"})
                                                                                             .attr("id", function (t) { return "g" + t.id;})
                                                                                             .attr("name", function (t) { return t.name ? t.name.split(" ").join("_").toLowerCase() : ""})
@@ -270,7 +270,7 @@ Example:
             },
 
             tick : function () {
-                if(_this.gnodes != undefined)
+                if(_this.gnodes != undefined && _this.graph.nodes.length > 0)
                 {
                     d3.selectAll("g foreignObject").attr("x", function (t) {
                         return t.x + (t.r ? 0.8 * t.r : 15)
@@ -396,10 +396,11 @@ Example:
                         .attr("style", "transform:translate(0px)")
                         .style("position", "absolute");
 
-                var g = this.graph;
-                g.nodes[0].x = this.width / 2;
-                g.nodes[0].y = this.height / 8;
-                this.buildGraph(g);
+                if(this.graph.nodes.length > 0){
+                    this.graph.nodes[0].x = this.width / 2;
+                    this.graph.nodes[0].y = this.height / 8;
+                    this.buildGraph();
+                }
             }
         });
     </script>
--
libgit2 0.21.4