forcegraph: test for localStorage before using it

This commit is contained in:
Nils Schneider 2015-04-01 15:59:05 +02:00
parent eb315ab60a
commit aa237c2380
3 changed files with 23 additions and 5 deletions

View file

@ -62,6 +62,17 @@ function dictGet(dict, key) {
return dictGet(dict[k], key) return dictGet(dict[k], key)
} }
function localStorageTest() {
var test = 'test'
try {
localStorage.setItem(test, test)
localStorage.removeItem(test)
return true
} catch(e) {
return false
}
}
/* Helpers working with nodes */ /* Helpers working with nodes */
function offline(d) { function offline(d) {

View file

@ -12,6 +12,9 @@ define(["d3"], function (d3) {
var LINK_DISTANCE = 70 var LINK_DISTANCE = 70
function savePositions() { function savePositions() {
if (!localStorageTest())
return
var save = nodes.map( function (d) { var save = nodes.map( function (d) {
return { id: d.id, x: d.x, y: d.y } return { id: d.id, x: d.x, y: d.y }
}) })
@ -140,13 +143,16 @@ define(["d3"], function (d3) {
window.addEventListener("resize", resize) window.addEventListener("resize", resize)
self.setData = function (data) { self.setData = function (data) {
var save = JSON.parse(localStorage.getItem("graph/nodeposition"))
var nodePositions = {} var nodePositions = {}
if (localStorageTest()) {
var save = JSON.parse(localStorage.getItem("graph/nodeposition"))
if (save) if (save)
save.forEach( function (d) { save.forEach( function (d) {
nodePositions[d.id] = d nodePositions[d.id] = d
}) })
}
links = data.graph.links.filter( function (d) { links = data.graph.links.filter( function (d) {
return !d.vpn return !d.vpn

View file

@ -30,6 +30,7 @@
"has_location": false, "has_location": false,
"limit": false, "limit": false,
"linkId": false, "linkId": false,
"localStorageTest": false,
"offline": false, "offline": false,
"one": false, "one": false,
"online": false, "online": false,