add functions to generate tooltip string

genome-vuer/src/js/genome_viewer.js

@@ -154,7 +154,26 @@ Vue.component("genome-viewer",{
     },
     featureClick (featureId) {
       console.log(featureId)
-    }
+    },
+    fill_in_tooltip_template (feature, template) {
+      let tooltip = template
+      //TODO: Iterate over custom properties
+      for ( let property of ['name', 'description', 'start', 'end', 'strand', 'type'] ){
+        tooltip = tooltip.replace( "{" + property + "}", feature[property] )
+      }
+      return( tooltip )
+    },
+    get_tooltip (e){
+      let element = e.currentTarget
+      let id = element.getAttribute( "name" )
+      let feature = null
+      for(let entry of this.featureData){
+        if(entry.name === id){
+          feature = entry
+        }
+      }
+      console.log( this.fill_in_tooltip_template( feature, this.genomeStats.tooltip ) )
+    },
   },
   data: function(){
     return {