120 lines
2.2 KiB
JavaScript
120 lines
2.2 KiB
JavaScript
define(function () {
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return function () {
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var objects = { nodes: {}, links: {} }
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var targets = []
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var self = this
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function saveState(d) {
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var s = "#!"
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if (d) {
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if ("node" in d)
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s += "n:" + encodeURIComponent(d.node.nodeinfo.node_id)
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if ("link" in d)
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s += "l:" + encodeURIComponent(linkId(d.link))
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}
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window.history.pushState(s, undefined, s)
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}
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function resetView(push) {
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push = trueDefault(push)
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targets.forEach( function (t) {
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t.resetView()
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})
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if (push)
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saveState()
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}
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function gotoNode(d) {
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targets.forEach( function (t) {
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t.gotoNode(d)
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})
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}
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function gotoLink(d) {
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targets.forEach( function (t) {
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t.gotoLink(d)
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})
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}
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function loadState(s) {
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if (!s)
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return false
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if (!s.startsWith("#!"))
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return false
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var args = s.slice(2).split(":")
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var id
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if (args[1] !== undefined) {
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id = decodeURIComponent(args[1])
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if (args[0] === "n" && id in objects.nodes) {
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gotoNode(objects.nodes[id])
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return true
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}
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if (args[0] === "l" && id in objects.links) {
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gotoLink(objects.links[id])
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return true
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}
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}
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return false
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}
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self.start = function () {
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if (!loadState(window.location.hash))
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resetView(false)
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window.onpopstate = function (d) {
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if (!loadState(d.state))
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resetView(false)
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}
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}
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self.node = function (d) {
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return function () {
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gotoNode(d)
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saveState({ node: d })
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return false
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}
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}
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self.link = function (d) {
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return function () {
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gotoLink(d)
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saveState({ link: d })
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return false
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}
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}
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self.reset = function () {
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resetView()
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saveState()
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}
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self.addTarget = function (d) { targets.push(d) }
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self.setData = function (data) {
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objects.nodes = {}
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objects.links = {}
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data.nodes.all.forEach( function (d) {
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objects.nodes[d.nodeinfo.node_id] = d
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})
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data.links.forEach( function (d) {
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objects.links[linkId(d)] = d
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})
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}
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return self
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}
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})
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