From 473734f2bbfa1a01d6f8775bc7eaf9d7e406a701 Mon Sep 17 00:00:00 2001
From: Nils Schneider <nils@nilsschneider.net>
Date: Tue, 31 Mar 2015 23:24:24 +0200
Subject: [PATCH] prepare router, forcegraph, map for destroy/reload

---
 lib/forcegraph.js | 31 ++++++++++++++++++++++++-------
 lib/map.js        |  4 ++++
 lib/router.js     | 13 ++++++++++++-
 3 files changed, 40 insertions(+), 8 deletions(-)

diff --git a/lib/forcegraph.js b/lib/forcegraph.js
index 2ef1cf4..8b555b2 100644
--- a/lib/forcegraph.js
+++ b/lib/forcegraph.js
@@ -1,7 +1,7 @@
 define(["d3"], function (d3) {
    return function (linkScale, sidebar, router) {
     var self = this
-    var vis, link, node, label
+    var svg, vis, link, node, label
     var nodesDict, linksDict
     var zoomBehavior
     var force
@@ -72,8 +72,6 @@ define(["d3"], function (d3) {
       var height = el.offsetHeight
 
       force.size([width, height])
-      force.start()
-      panzoom()
     }
 
     function tickEvent() {
@@ -99,11 +97,13 @@ define(["d3"], function (d3) {
     zoomBehavior = d3.behavior.zoom()
                      .scaleExtent([1 / 3, 3])
                      .on("zoom", panzoom)
+                     .translate([sidebar.getWidth(), 0])
 
-    vis = d3.select(el).append("svg")
-                .attr("pointer-events", "all")
-                .call(zoomBehavior)
-                .append("g")
+    svg = d3.select(el).append("svg")
+            .attr("pointer-events", "all")
+            .call(zoomBehavior)
+
+    vis = svg.append("g")
 
     vis.append("g").attr("class", "links")
     vis.append("g").attr("class", "nodes")
@@ -115,6 +115,8 @@ define(["d3"], function (d3) {
               .linkDistance(70)
               .on("tick", tickEvent)
 
+    panzoom()
+
     var draggableNode = d3.behavior.drag()
                           .on("dragstart", dragstart)
                           .on("drag", dragmove)
@@ -263,6 +265,21 @@ define(["d3"], function (d3) {
       }
     }
 
+    self.destroy = function () {
+      window.removeEventListener("resize", resize)
+
+      force.stop()
+      node.remove()
+      link.remove()
+      svg.remove()
+      force = null
+      svg = null
+      vis = null
+      link = null
+      node = null
+      label = null
+    }
+
     return self
   }
 })
diff --git a/lib/map.js b/lib/map.js
index 73e18ea..b389a79 100644
--- a/lib/map.js
+++ b/lib/map.js
@@ -182,6 +182,10 @@ define(["leaflet", "moment", "leaflet.label"], function (L, moment) {
         resetView()
     }
 
+    self.destroy = function () {
+      map.remove()
+    }
+
     return self
   }
 })
diff --git a/lib/router.js b/lib/router.js
index 998a1df..01a7472 100644
--- a/lib/router.js
+++ b/lib/router.js
@@ -1,8 +1,9 @@
 define(function () {
   return function () {
+    var self = this
     var objects = { nodes: {}, links: {} }
     var targets = []
-    var self = this
+    var running = false
 
     function saveState(d) {
       var s = "#!"
@@ -79,6 +80,8 @@ define(function () {
     }
 
     self.start = function () {
+      running = true
+
       if (!loadState(window.location.hash))
         resetView(false)
 
@@ -134,6 +137,14 @@ define(function () {
       })
     }
 
+    self.reload = function () {
+      if (!running)
+        return
+
+      if (!loadState(window.history.state))
+        resetView(false)
+    }
+
     return self
   }
 })