Router pics (#37)

* add a padding to sidebar for better use on mobile devices

* allow other things as text in attributeEntry

Now it is possible to use pictures and other stuff in this function

* Show Router-Pic with double fallback

3 Möglichkeiten
1. in config wird externe Quelle angegeben
2. wenn nicht wird in ./nodes/ geseucht
3. ansonsten Knotenname + Knotenname in erster Zeile

extern via:
cdn

"hwImg": [
  { "thumbnail": "https://cdn.rawgit.com/Moorviper/meshviewer_hwpics/master/nodes/{MODELHASH}.svg",
    "caption": "Knoten {MODELHASH}"
  }
 ]

aktueller nicht cdn:
"hwImg": [
  { "thumbnail": "https://rawgit.com/Moorviper/meshviewer_hwpics/master/nodes/{MODELHASH}.svg",
    "caption": "Knoten {MODELHASH}"
  }
 ]

lib/infobox/node.js

@@ -293,6 +293,40 @@ define(["moment", "numeral", "tablesort", "tablesort.numeric"],
     return au.enabled ? "aktiviert (" + au.branch + ")" : "deaktiviert"
   }
 
+  function showNodeImg(o, model) {
+    if (!model)
+      return undefined
+
+    var content, caption
+    var modelhash = model.split("").reduce(function(a, b) {
+      a = ((a << 5) - a) + b.charCodeAt(0)
+      return a & a
+    }, 0)
+
+    if (o.thumbnail) {
+      content = document.createElement("img")
+      content.id = "routerpicture"
+      content.classList.add("nodeImg")
+      content.src = o.thumbnail.replace("{MODELHASH}", modelhash)
+      content.onerror = function() {
+        console.log("Router-Bild nicht vorhanden !!! create an issue @ https://github.com/Moorviper/Freifunk-Router-Anleitungen/issues")
+        document.getElementById("routerpicdiv").outerHTML = "Knotenname"
+      }
+    }
+
+    if (o.caption) {
+      caption = o.caption.replace("{MODELHASH}", modelhash)
+
+      if (!content)
+        content = document.createTextNode(caption)
+    }
+
+    var p = document.createElement("p")
+    p.appendChild(content)
+
+    return content
+}
+
   function showStatImg(o, d) {
     var subst = {}
     subst["{NODE_ID}"] = d.nodeinfo.node_id ? d.nodeinfo.node_id : "unknown"
@@ -301,13 +335,44 @@ define(["moment", "numeral", "tablesort", "tablesort.numeric"],
   }
 
   return function(config, el, router, d) {
-    var h2 = document.createElement("h2")
-    h2.textContent = d.nodeinfo.hostname
-    el.appendChild(h2)
+    var top = document.createElement("div")
+    top.id = "routerpicdiv"
+    try {
+      if (config.hwImg)
+        config.hwImg.forEach(function(hwImg) {
+          try {
+            top.appendChild(showNodeImg(hwImg, d.nodeinfo.hardware.model))
+          }
+          catch (err) {
+            console.log(err.message)
+          }
+        })
+
+      else
+      {
+        var localpic = [] // create fallback-config-data
+        localpic.push({
+          thumbnail: "./nodes/{MODELHASH}.svg",
+          caption: "Knoten {MODELHASH}"
+        })
+        localpic.forEach(function(localpic) {
+          try {
+            top.appendChild(showNodeImg(localpic, d.nodeinfo.hardware.model))
+          }
+          catch (err) {
+            console.log(err.message)
+          }
+        })
+      }
+    }
+    catch (err) {
+      console.log(err.message)
+    }
 
     var attributes = document.createElement("table")
     attributes.classList.add("attributes")
 
+    attributeEntry(attributes, top, d.nodeinfo.hostname)
     attributeEntry(attributes, "Status", showStatus(d))
     attributeEntry(attributes, "Gateway", d.flags.gateway ? "ja" : null)
     attributeEntry(attributes, "Koordinaten", showGeoURI(d))