refactor Infobox (own module)

lib/infobox/main.js

@@ -0,0 +1,43 @@
+define(["infobox/link", "infobox/node"], function (Link, Node) {
+  return function (config, sidebar, gotoAnything) {
+    var self = this
+    el = undefined
+
+    function destroy() {
+      if (el && el.parentNode) {
+        el.parentNode.removeChild(el)
+        el = undefined
+      }
+    }
+
+    function create() {
+      destroy()
+
+      el = document.createElement("div")
+      sidebar.insertBefore(el, sidebar.firstChild)
+
+      el.scrollIntoView(false)
+      el.classList.add("infobox")
+      el.destroy = destroy
+
+      var closeButton = document.createElement("button")
+      closeButton.classList.add("close")
+      closeButton.onclick = gotoAnything.reset
+      el.appendChild(closeButton)
+    }
+
+    self.resetView = destroy
+
+    self.gotoNode = function (d) {
+      create()
+      new Node(config, el, gotoAnything, d)
+    }
+
+    self.gotoLink = function (d) {
+      create()
+      new Link(config, el, gotoAnything, d)
+    }
+
+    return self
+  }
+})