From 290bc6f3597bf69c475a80598d1118464a0a388c Mon Sep 17 00:00:00 2001
From: Nils Schneider <nils@nilsschneider.net>
Date: Mon, 6 Apr 2015 11:58:02 +0200
Subject: [PATCH] map: keep objects highlighted on updates

---
 lib/map.js | 126 +++++++++++++++++++++++++++++------------------------
 1 file changed, 69 insertions(+), 57 deletions(-)

diff --git a/lib/map.js b/lib/map.js
index 93c442e..cac1d95 100644
--- a/lib/map.js
+++ b/lib/map.js
@@ -74,6 +74,62 @@ define(["d3", "leaflet", "moment", "leaflet.label"], function (d3, L, moment) {
 
     var nodeDict = {}
     var linkDict = {}
+    var highlight
+
+    function resetMarkerStyles(nodes, links) {
+      Object.keys(nodes).forEach( function (d) {
+        nodes[d].resetStyle()
+      })
+
+      Object.keys(links).forEach( function (d) {
+        links[d].resetStyle()
+      })
+    }
+
+    function setView(bounds) {
+      map.fitBounds(bounds, {paddingTopLeft: [sidebar.getWidth(), 0]})
+    }
+
+    function resetZoom() {
+      setView(barycenter.getBounds())
+    }
+
+    function goto(m) {
+      var bounds
+
+      if ("getBounds" in m)
+        bounds = m.getBounds()
+      else
+        bounds = L.latLngBounds([m.getLatLng()])
+
+      setView(bounds)
+
+      return m
+    }
+
+    function updateView(nopanzoom) {
+      resetMarkerStyles(nodeDict, linkDict)
+      var m
+
+      if (highlight !== undefined)
+        if (highlight.type === "node") {
+          m = nodeDict[highlight.o.nodeinfo.node_id]
+
+          if (m)
+            m.setStyle({ fillColor: m.options.color, color: "orange", weight: 20, fillOpacity: 1, opacity: 0.7 })
+        } else if (highlight.type === "link") {
+          m = linkDict[linkId(highlight.o)]
+
+          if (m)
+            m.setStyle({ weight: 7, opacity: 1, dashArray: "10, 10" })
+        }
+
+      if (!nopanzoom)
+        if (m)
+          goto(m)
+        else
+          resetZoom()
+    }
 
     function calcBarycenter(nodes) {
       nodes = nodes.map(function (d) { return d.nodeinfo.location })
@@ -135,71 +191,27 @@ define(["d3", "leaflet", "moment", "leaflet.label"], function (d3, L, moment) {
           return iconLost
         }, router))
 
-      L.featureGroup(markersOffline).addTo(map)
-      L.featureGroup(markersOnline).addTo(map)
-      L.featureGroup(markersNew).addTo(map)
-      L.featureGroup(markersLost).addTo(map)
+      groupOffline = L.featureGroup(markersOffline).addTo(map)
+      groupOnline = L.featureGroup(markersOnline).addTo(map)
+      groupNew = L.featureGroup(markersNew).addTo(map)
+      groupLost = L.featureGroup(markersLost).addTo(map)
+
+      updateView(true)
     }
 
-    function resetMarkerStyles(nodes, links) {
-      Object.keys(nodes).forEach( function (d) {
-        nodes[d].resetStyle()
-      })
-
-      Object.keys(links).forEach( function (d) {
-        links[d].resetStyle()
-      })
+    self.resetView = function () {
+      highlight = undefined
+      updateView()
     }
 
-    function setView(bounds) {
-      map.fitBounds(bounds, {paddingTopLeft: [sidebar.getWidth(), 0]})
-    }
-
-    function resetView() {
-      resetMarkerStyles(nodeDict, linkDict)
-
-      setView(barycenter.getBounds())
-    }
-
-    function goto(dict, id) {
-      var m = dict[id]
-      if (m === undefined)
-        return undefined
-
-      var bounds
-
-      if ("getBounds" in m)
-        bounds = m.getBounds()
-      else
-        bounds = L.latLngBounds([m.getLatLng()])
-
-      setView(bounds)
-
-      return m
-    }
-
-    self.resetView = resetView
-
     self.gotoNode = function (d) {
-      resetMarkerStyles(nodeDict, linkDict)
-
-      var m = goto(nodeDict, d.nodeinfo.node_id)
-
-      if (m)
-        m.setStyle({ fillColor: m.options.color, color: "orange", weight: 20, fillOpacity: 1, opacity: 0.7 })
-      else
-        resetView()
+      highlight = {type: "node", o: d}
+      updateView()
     }
 
     self.gotoLink = function (d) {
-      resetMarkerStyles(nodeDict, linkDict)
-
-      var m = goto(linkDict, d.id)
-
-      if (m)
-        m.setStyle({ weight: 7, opacity: 1, dashArray: "10, 10" })
-      else
-        resetView()
+      highlight = {type: "link", o: d}
+      updateView()
     }
 
     self.destroy = function () {