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index.html
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<!doctype html>
<html>
<head>
<meta charset="utf-8" />
<title>Org Roam Server</title>
<link rel="stylesheet" href="assets/bootstrap.min.css">
<link rel="stylesheet" href="assets/bootstrap-toggle.min.css">
<link rel="stylesheet" href="assets/select2.min.css">
<script type="text/javascript" src="assets/jquery-3.5.0.min.js"></script>
<script type="text/javascript" src="assets/vis-network.min.js"></script>
<script type="text/javascript" src="assets/bootstrap.min.js"></script>
<script type="text/javascript" src="assets/select2.min.js"></script>
<script type="text/javascript" src="assets/bootstrap-toggle.min.js"></script>
<style type="text/css">
* { padding: 0; margin: 0; }
html, body {
min-height: 100% !important;
height: 100%;
width: 100%;
overflow: hidden;
position: relative;
z-index: 0;
}
#global-network, #buffer-network {
min-height: 100% !important;
height: 100%;
width: 100%;
overflow: hidden;
position: relative;
z-index: 4;
color: #c7cec6 !important;
}
#temp-network {
display: none;
}
#preview-frame{
display: none;
position: absolute;
z-index: 100;
}
#fileframe {
display: none;
position: absolute;
z-index: 100;
}
#iframe-buttons {
position: absolute;
z-index: 101;
}
#back-button,
#edit-button,
#refresh-button {
display: inline-block;
z-index: 102;
}
#view-menu {
position: absolute;
right: 0;
z-index: 5;
}
#dropdownfiles {
display: none;
position: absolute;
width: 25%;
z-index: 5;
}
#controls {
position: fixed;
bottom: 0;
left: 0;
right: 0;
max-height: 40px;
display: flex;
z-index: 5;
}
#dropdownnodes, #dropdownfilters {
display: none;
align-self: flex-start;
width: 25%;
}
#formdistance {
display: none;
align-self: flex-start;
margin-left: 10px;
}
#formdistance label {
margin-bottom: 0;
}
#inputdistance {
width: 50px;
}
.darkmode #inputdistance {
color: #c7cec6;
background-color: #1d1e20;
}
#reload-button {
margin-left: auto;
}
#toggle-list-type-button {
margin-right: auto;
}
#toggle-preview {
position: relative;
float: left;
width: %50
}
#debug-button {
display: none;
position: absolute;
left: 0;
bottom: 0;
z-index: 5;
}
#colormode {
position: absolute;
display: inline-block;
left: 50%;
z-index: 5;
}
.select2-container--default .select2-selection--single,
.select2-container--default .select2-selection--multiple,
#inputdistance, #colormode, html, body {
-webkit-transition: background-color 500ms ease-out;
-moz-transition: background-color 500ms ease-out;
-o-transition: background-color 500ms ease-out;
transition: background-color 500ms ease-out;
}
.darkmode .select2-container--default .select2-selection--single,
.darkmode .select2-container--default .select2-selection--multiple,
.darkmode .select2-search--dropdown,
.darkmode .select2-results,
.darkmode
.select2-container--default
.select2-selection--multiple
.select2-selection__choice {
background-color: #1d1e20;
}
.darkmode .select2-search__field {
background-color: #1d1e20;
color: #c7cec6 ;
}
</style>
</head>
<body>
<div id="dropdownfiles">
<select class="dropdownfiles" name="files" style="width: 100%;">
<option></option>
</select>
</div>
<div class="box" id="preview-frame">
<button class="btn btn-link float-left"
id="back-button"
onclick="history.back()"> Back </button>
<iframe src="" id="hovernode">
</iframe>
</div>
<label class="checkbox-inline" id="colormode">
<input type="checkbox" data-toggle="toggle"
data-on="Light Mode" data-off="Dark Mode"
data-onstyle="default" data-offstyle="default"
data-size="small" id="colormode-checkbox">
</label>
<div class="btn-group btn-group-toggle float-right"
data-toggle="buttons" id="view-menu">
<label class="btn btn-sm btn-primary btn-simple active" id="globalview">
<input type="radio" name="views" checked id="global" value="global">
<span class="d-none d-sm-block d-md-block
d-lg-block d-xl-block">Database Network</span>
</label>
<label class="btn btn-sm btn-primary btn-simple" id="bufferview">
<input type="radio" class="d-none d-sm-none" name="views"
id="buffer" value="buffer">
<span class="d-none d-sm-block d-md-block
d-lg-block d-xl-block">Buffer Network</span>
</label>
<label class="btn btn-sm btn-primary btn-simple" id="fileview">
<input type="radio" class="d-none d-sm-none" name="views"
id="files" value="files">
<span class="d-none d-sm-block d-md-block
d-lg-block d-xl-block">File Viewer</span>
</label>
</div>
<button class="btn btn-sm btn-primary btn-simple" id="toggle-preview">
Enable Preview
</button>
<div id="controls">
<div id="dropdownfilters">
<select class="dropdownfilters" name="tags"
multiple="multiple" style="width: 100%;">
<option></option>
</select>
</div>
<div id="dropdownnodes">
<select class="dropdownnodes" name="nodes" style="width: 100%;">
<option></option>
</select>
</div>
<div id="formdistance">
<label for="distance">Distance: </label>
<input id="inputdistance" name="distance"
type="number" value="1" min="0" pattern="\d+" />
</div>
<button class="btn btn-primary btn-danger btn-sm" id="toggle-list-type-button">
Exclude
</button>
<button class="btn btn-primary btn-danger btn-sm" id="reload-button">
Reload
</button>
</div>
<button class="btn btn-primary btn-danger btn-sm" id="debug-button">
Debug
</button>
<div id="global-network"></div>
<div id="buffer-network"></div>
<div id="temp-network"></div>
<div class="fileframe" id="fileframe">
<div id="iframe-buttons">
<button class="btn btn-link float-left" id="back-button">Back</button>
<button class="btn btn-link" id="edit-button">Edit</button>
<button class="btn btn-link" id="refresh-button">Refresh</button>
</div>
<iframe src="" id="filenode"></iframe>
<iframe src="" id="backlinks"></iframe>
</div>
<script type="text/javascript">
// Maximum of an array given compare function
Array.prototype.max = function(compare) {
if (this.length === 0) return null;
if (this.length === 1) return this[0];
compare = (compare || Math.max);
let v = this[0];
for (let i = 1; i < this.length; i++) {
let ret = compare(this[i], v);
if (ret > 0) {
v = this[i];
}
}
return v;
}
const urlParams = new URLSearchParams(window.location.search);
const token = urlParams.get('token');
$(window).on("load", function () {
var customNetworkOptions = {}
$.ajax({
async: false,
type: 'GET',
url: `/network-vis-options?token=${token}`,
success: function(data) {
customNetworkOptions = data;
}
});
$.ajax({
async: false,
type: 'GET',
url: `/server-css?token=${token}`,
success: function(data) {
var style = document.createElement('style');
style.type = 'text/css';
style.innerHTML = data;
document.getElementsByTagName('head')[0].appendChild(style);
}
});
var includeFilters = new Set();
var excludeFilters = new Set();
const FilterEnum = Object.freeze({"exclude":0, "include":1})
const filters = [excludeFilters, includeFilters];
let filterState = FilterEnum.exclude;
var defaultIncludeFilters = [];
var defaultExcludeFilters = [];
const filterButtonTitles = ['Exclude', 'Include'];
const filterButtonColors = ['#c82333', 'green'];
$.ajax({
async: false,
type: 'GET',
url: `/default-filters?token=${token}`,
success: function(data) {
if (data.include) {
for (let i = 0; i < data.include.length; i++) {
filters[FilterEnum.include]
.add(JSON.stringify(data.include[i]));
defaultIncludeFilters.push(data.include[i].id);
}
}
if (data.exclude) {
for (let i = 0; i < data.exclude.length; i++) {
filters[FilterEnum.exclude]
.add(JSON.stringify(data.exclude[i]));
defaultExcludeFilters.push(data.exclude[i].id);
}
}
}
});
var previewFrame = document.getElementById("preview-frame"); // div
var hoverNode = document.getElementById("hovernode"); // iframe
var globalNetwork;
var bufferNetwork;
let transformString =
`translateX(25px)`+
`translateY(${($("#view-menu").height() + 50)/2}px)`;
$("#fileframe").css("webkitTransform", transformString);
$("#fileframe").css("MozTransform", transformString);
$("#fileframe").css("msTransform", transformString);
$("#fileframe").css("OTransform", transformString);
$("#fileframe").css("transform", transformString);
$("#fileframe #back-button")
.on("click", function iframeGoBack() {
if (darkmode) {
// Hide iframes until the page is loaded
// to prevent flickering
$("#fileframe").css("display", "none");
}
window.history.back();
});
$("#fileframe #edit-button")
.on("click", function () {
const url = new URL(document.getElementById("filenode")
.contentWindow.location.href);
let string = url.pathname.substring(
1, url.pathname.lastIndexOf('.'));
for (let i = 0; i < select2Data.length; i++) {
if (select2Data[i].id === string) {
window.open("org-protocol://roam-file?file="
.concat(select2Data[i].path),
"_self");
break
}
}
});
$("#fileframe #refresh-button")
.on("click", function () {
if (darkmode) {
// Hide iframes until the page is loaded
// to prevent flickering
$("#fileframe").css("display", "none");
}
const url = document.getElementById("filenode")
.contentWindow.location.href;
$("#filenode").attr("src", url);
});
function onWindowResize () {
$("#filenode").width(($(window).width() - 50) * 0.7);
$("#backlinks").width(($(window).width() - 50) * 0.3);
$("#filenode").height($(window).height() -
$("#view-menu").height() - 50);
$("#backlinks").height($(window).height() -
$("#view-menu").height() - 50);
}
onWindowResize();
window.onresize = onWindowResize;
$("#toggle-preview").css("display", "block");
$("#dropdownfiles").css("display", "none");
$("#dropdownnodes").css("display", "none");
$("#formdistance").css("display", "none");
$("#dropdownfilters").css("display", "block");
$("#fileframe").css("display", "none");
$("#global-network").css("display", "block");
$("#buffer-network").css("display", "none");
$("#preview-frame").hover(
function () {previewFrame.style.display = "block";},
function () {previewFrame.style.display = "none";});
var darkmode;
if (localStorage.darkmode === "true") {
$('#colormode-checkbox').bootstrapToggle('on')
} else {
$('#colormode-checkbox').bootstrapToggle('off')
}
$('#colormode-checkbox').change(function() {
if(this.checked) {
$(document.body).addClass("darkmode");
document.body.style.backgroundColor = "#1d1e20";
document.body.style.color = "#c7cec6";
darkmode = true;
localStorage.darkmode = true;
iframeSetColor("filenode", "#1d1e20", "#c7cec6");
iframeSetColor("backlinks", "#1d1e20", "#c7cec6");
globalNetwork.setOptions({nodes: {font: { color: "#c7cec6" }}});
if ($("#buffer-network").css("display") === "block") {
bufferNetwork.setOptions({nodes: {font: { color: "#c7cec6" }}});
}
} else {
$(document.body).removeClass("darkmode");
document.body.style.backgroundColor = "white";
document.body.style.color = "black";
darkmode = false;
localStorage.darkmode = false;
iframeSetColor("filenode", "white", "black");
iframeSetColor("backlinks", "white", "black");
globalNetwork.setOptions({nodes: {font: { color: "black" }}});
if ($("#buffer-network").css("display") === "block") {
bufferNetwork.setOptions({nodes: {font: { color: "black" }}});
}
}
})
// Visjs network options
var options = $.extend(true, {
nodes: {shape: "dot"},
interaction: {hover: true},
layout: {improvedLayout: true}
}, customNetworkOptions);
var tags;
// Initialize the network
// Any update to the dataset objects will update the Network
var nodeDataset = new vis.DataSet();
var edgeDataset = new vis.DataSet();
var filterColors = new Array();
var view = new vis.DataView(nodeDataset, {
filter: function (item) {
let parsed_filter;
for (let i = 0; i < filters.length; i++) {
if (filters[i].size > 0) {
if (item.tags) {
let itemTags = new Set(item.tags);
for (let filter of filters[i].values()) {
parsed_filter = JSON.parse(filter);
if (parsed_filter.parent === "tags"){
if ((i == FilterEnum.include ^
itemTags.has(parsed_filter.id))) {
return false;
}
}
}
} else {
if (i == FilterEnum.include) {
return false;
}
}
}
}
return true;
}
});
globalNetwork = new vis.Network(document.getElementById("global-network"),
{nodes: view,
edges: edgeDataset},
options);
var tempNetwork = new vis.Network(document.getElementById("temp-network"),
{nodes: nodeDataset,
edges: edgeDataset},
{layout:{improvedLayout: false},
physics:{enabled: false}});
globalNetwork.on("stabilized", onStabilized);
globalNetwork.on("selectNode", onNodeClick);
globalNetwork.on("hoverNode", onNodeHover);
globalNetwork.on("blurNode", onNodeBlur);
$('#colormode-checkbox').change()
function onStabilized () {
// Update positions storage
localStorage.positions = JSON.stringify(globalNetwork.getPositions());
}
var currentNode;
var preview = false;
var currentBuffer;
var oldCurrentBufferData = "";
function setCurrentBufferSource () {
currentBuffer = new EventSource(`/current-buffer-data?token=${token}`);
currentBuffer.onmessage = function (event) {
if (oldCurrentBufferData !== event.data) {
currentNode = event.data;
oldCurrentBufferData = event.data;
if ($("#buffer-network").css("display") === "block") {
drawBufferNetwork();
}
}
}
}
setCurrentBufferSource();
function debugFunction() {
}
$("#debug-button").click(function() {
debugFunction();
});
var roamData;
var roamSource;
function reload() {
$.get(`/roam-data?force=1&token=${token}`, function(data, status){
console.log(`Connection to /roam-data: ${status}`);
roamData = JSON.parse(data.substring(data.indexOf(':') + 1));
update();
roamSource = new EventSource(`/roam-data?token=${token}`);
roamSource.onmessage = function (event) {
roamData = JSON.parse(event.data);
update();
}
});
}
reload();
$("#reload-button").click(function() {
roamSource.close()
reload();
currentBuffer.close()
setCurrentBufferSource();
});
$("#toggle-list-type-button").click(function() {
filterState = (filterState + 1) % filters.length;
$(this).css('background', filterButtonColors[filterState]);
$(this).text(filterButtonTitles[filterState]);
});
function update () {
updateNodesAndEdges();
updateDropdown();
if ($("#buffer-network").css("display") === "block") {
if (currentNode) {
drawBufferNetwork();
}
}
}
function iframeSetColor(id, background, color) {
let iframe = document.getElementById(id).contentDocument.body;
let transition = "background-color 500ms ease-out"
iframe.style.webkitTransition = transition;
iframe.style.MozTransition = transition;
iframe.style.msTransition = transition;
iframe.style.OTransition = transition;
iframe.style.transition = transition;
iframe.style.backgroundColor = background;
iframe.style.color = color;
let h1s = document.getElementById(id)
.contentDocument.getElementsByTagName("h1");
for (let i = 0; i < h1s.length; i++) {
h1s[i].style.color = color;
}
}
var select2Data = [];
function updateDropdown() {
select2Data = [];
for (let i = 0 ; i < roamData.nodes.length; i++) {
select2Data.push({id: roamData.nodes[i].id,
text: roamData.nodes[i].title,
path: roamData.nodes[i].path})
}
// Node search dropdown (Buffer Network View)
$(".dropdownnodes")
.select2({
data: select2Data,
placeholder: 'Node',
width: 'resolve'
})
.on('select2:select', function (e) {
currentNode = e.params.data.id;
drawBufferNetwork();
});
// File search dropdown (File Viewer)
$(".dropdownfiles")
.select2({
data: select2Data,
placeholder: 'File',
width: 'resolve'
})
.on('select2:select', function (e) {
if (darkmode) {
// Hide iframes until the page is loaded
// to prevent flickering
$("#fileframe").css("display", "none");
}
$("#filenode")
.attr("src", e.params.data.id.concat(`.html?token=${token}`));
});
let select2Filters = [{id: "tags", text: "Tags", children: []}];
tags.forEach(function (tag) {
select2Filters[0].children.push({id: tag,
text: tag,
parent: "tags"})
});
$(".dropdownfilters").html(""); // To prevent duplicate tags
let s2filters = $(".dropdownfilters")
.select2({
data: select2Filters,
placeholder: "Filter",
width: 'resolve',
templateSelection: function (data, container) {
if(!filterColors[data.id]) {
const color = $('#toggle-list-type-button').
css("backgroundColor");
$(container).css("background-color", color);
filterColors[data.id] = color;
} else {
$(container).css("background-color",
filterColors[data.id]);
}
return data.text;
}
})
.on('select2:select', function (e) {
filters[filterState].add(JSON.stringify(
{id: e.params.data.id, parent: e.params.data.parent}));
view.refresh()
})
.on('select2:unselect', function (e) {
for (let i = 0; i < filters.length; i++) {
filters[i].delete(
JSON.stringify({id: e.params.data.id,
parent: e.params.data.parent}));
}
//maintain color map
filterColors[e.params.data.id] = null;
view.refresh()
});
for (let i = 0; i < defaultIncludeFilters.length; i++) {
filterColors[defaultIncludeFilters[i]] =
filterButtonColors[FilterEnum.include];
}
for (let i = 0; i < defaultExcludeFilters.length; i++) {
filterColors[defaultExcludeFilters[i]] =
filterButtonColors[FilterEnum.exclude];
}
s2filters.val(defaultIncludeFilters.concat(defaultExcludeFilters))
.trigger('change');
$("#filenode").on("load", function () {
let string = document.getElementById("filenode")
.contentWindow.location.href;
string = string.substring(string.lastIndexOf('/') + 1);
string = string.substring(0, string.lastIndexOf('.'));
let link;
for (let i = 0; i < select2Data.length; i++) {
// handle the URLs of select2Data[i] with parent directories
let selstr = select2Data[i].id;
selstr = selstr.substring(selstr.lastIndexOf('/')+1);
if (selstr === string) {
link = `org-roam-buffer?path=${select2Data[i].path}&` +
`label=${select2Data[i].text}&token=${token}`;
break
}
}
const links = document.getElementById("filenode")
.contentWindow.document.getElementsByTagName("a");
for (let i = 0; i < links.length; i++) {
links[i].onclick = function () {
if (darkmode) {
// Hide iframes until the page is loaded
// to prevent flickering
$("#fileframe").css("display", "none");
}
}
}
$("#backlinks").attr("src", link);
$('#backlinks').on('load', function() {
const links = document.getElementById("backlinks")
.contentWindow.document.getElementsByName("backlink");
let url;
let base_location;
for (let i = 0; i < links.length; i++) {
links[i].onclick = function () {
url = this.id.substring(0, this.id.lastIndexOf('.'));
url = url.concat(".html");
base_location = document.getElementById("filenode")
.contentWindow.location;
url = `${base_location.protocol}//`+
`${base_location.host}/`+
`${url}?token=${token}`
if (darkmode) {
// Hide iframes until the page is loaded
// to prevent flickering
$("#fileframe").css("display", "none");
}
$("#filenode").attr("src", url);
}
}
if (darkmode) {
iframeSetColor("filenode", "#1d1e20", "#c7cec6");
iframeSetColor("backlinks", "#1d1e20", "#c7cec6");
$("#fileframe").css("display", "block");
} else {
iframeSetColor("filenode", "white", "black");
iframeSetColor("backlinks", "white", "black");
}
});
});
}
$("#globalview").click(function() {
$("#toggle-preview").css("display", "block");
$("#dropdownfiles").css("display", "none");
$("#dropdownfilters").css("display", "block");
$("#fileframe").css("display", "none");
$("#dropdownnodes").css("display", "none");
$("#formdistance").css("display", "none");
$("#global-network").css("display", "block");
$("#buffer-network").css("display", "none");
$("#toggle-list-type-button").css("display", "block");
});
$("#bufferview").click(function() {
$("#toggle-preview").css("display", "block");
$("#dropdownfiles").css("display", "none");
$("#dropdownfilters").css("display", "none");
$("#dropdownnodes").css("display", "block");
$("#formdistance").css("display", "block");
$("#fileframe").css("display", "none");
$("#global-network").css("display", "none");
$("#buffer-network").css("display", "block");
$("#toggle-list-type-button").css("display", "none");
if (currentNode) {
drawBufferNetwork();
}
});
$("#fileview").click(function() {
$("#global-network").css("display", "none");
$("#buffer-network").css("display", "none");
$("#toggle-preview").css("display", "none");
$("#dropdownnodes").css("display", "none");
$("#formdistance").css("display", "none");
$("#dropdownfiles").css("display", "block");
$("#dropdownfilters").css("display", "none");
$("#fileframe").css("display", "block");
$("#toggle-list-type-button").css("display", "none");
});
$("#toggle-preview").click(function() {
if (preview) {
preview = false;
$("#toggle-preview").text("Enable Preview");
} else {
preview = true;
$("#toggle-preview").text("Disable Preview");
}
});
$("#inputdistance").on("input", drawBufferNetwork);
function updateNodesAndEdges () {
const tempDataset = new vis.DataSet(roamData.nodes);
nodeDataset.update(roamData.nodes);
edgeDataset.clear();
edgeDataset.update(roamData.edges);
const nodes = tempDataset.get({returnType:"Object"});
if (localStorage.positions &&
!jQuery.isEmptyObject(localStorage.positions)) {
let structuredPositions = []
const positions = JSON.parse(localStorage.positions);
for (let key in positions) {
if (Object.prototype.hasOwnProperty.call(positions, key)) {
if (nodes[key]) { // Check if it is removed from the database
structuredPositions.push({id: key,
x: positions[key].x,
y: positions[key].y});
} else {
nodeDataset.remove(key);
}
}
}
nodeDataset.update(structuredPositions);
}
// Set value depending on the number of connected nodes
// Also construct a set of tags
tags = new Set();
for (let nodeId in nodes) {
if (nodes[nodeId].tags) {
for (let i = 0; i < nodes[nodeId].tags.length; i++ ) {
tags.add(nodes[nodeId].tags[i]);
}
}
if (!nodes[nodeId].value) {
nodes[nodeId].value = tempNetwork.getConnectedNodes(nodeId).length;
}
}
function compareNodeValues(nodeId1, nodeId2) {
return nodes[nodeId1].value - nodes[nodeId2].value;
}
// Group the nodes
let group = 0;
const keys = Object.keys(nodes).sort(compareNodeValues);
for (let i = 0; i < keys.length; i++) {
const k = keys[i];
if (!nodes[k].group) {
const connectedNodes = tempNetwork.getConnectedNodes(k);
if (connectedNodes.length > 0) {
const node = connectedNodes.max(compareNodeValues);
if (!nodes[node].group) {
nodes[node].group = group;
group += 1;
}
nodes[k].group = nodes[node].group;
} else {
nodes[k].group = group;
group += 1;
}
}
}
// Update the dataset
let updateArray = [];
for (let nodeId in nodes) {
if (Object.prototype.hasOwnProperty.call(nodes, nodeId)) {
updateArray.push(nodes[nodeId]);
}
}
nodeDataset.update(updateArray);
// Keep roamData updated for buffer network
roamData.nodes = updateArray;
}
function onNodeClick(params) {
if (params.nodes.length === 1) {
let node = params.nodes[0];
window.open(tempNetwork.body.nodes[node].options.url,
"_self");
currentNode = node;
// If we are in the buffer view, draw new node
if ($("#buffer-network").css("display") === "block") {
drawBufferNetwork();
}
}
}
var nodeHovered = true;
function onNodeHover(params) {
if (preview) {
nodeHovered = true;
hoverNode.src = params.node.concat(`.html?token=${token}`);
$('#hovernode').on('load', function() {
if (nodeHovered) {
let x = params.event.clientX;
let y = params.event.clientY;
$("#hovernode").width(
Math.abs($(window).width()/2 - x) +
$(window).width()/2 - 50);
$("#hovernode").height(
Math.abs($(window).height()/2 - y) +
$(window).height()/2 - 50);
// Check boundaries
if ((x + $("#hovernode").width()) > $(window).width()) {
x = x - $("#hovernode").width();
}
if ((y + $("#hovernode").height()) > $(window).height()) {
y = y - $("#hovernode").height();
}
// Move previewFrame to the hovered node's position
let transformString =
`translateX(${x}px)`+
`translateY(${y}px)`;
previewFrame.style.webkitTransform = transformString;
previewFrame.style.MozTransform = transformString;
previewFrame.style.msTransform = transformString;
previewFrame.style.OTransform = transformString;
previewFrame.style.transform = transformString;
if (darkmode) {
iframeSetColor("hovernode", "#1d1e20", "#c7cec6");
} else {
iframeSetColor("hovernode", "white", "black");
}
previewFrame.style.display = "block";
}
});
}
}
function onNodeBlur() {
nodeHovered = false;
previewFrame.style.display = "none";
}
function collectConnectedNodes(
allNodes, baseNode, distance, alreadyConnected) {
if (distance < 1) {
return new Set([baseNode]); // base case for recursion
}
let connectedNodes = new Set([baseNode]);
const neighbours = tempNetwork.getConnectedNodes(baseNode);
for (let i = 0; i < neighbours.length; i++) {
// Skip this node if we've already seen it. Helps with the performance.
if (alreadyConnected && alreadyConnected.has(neighbours[i])) continue;
var neighbourConnectedNodes = collectConnectedNodes(
allNodes, neighbours[i], distance - 1, connectedNodes);
for (let node of neighbourConnectedNodes) {
connectedNodes.add(node);
}
}
return connectedNodes;
}
function drawBufferNetwork() {
const nodeDataset = new vis.DataSet(roamData.nodes);
const nodes = nodeDataset.get({returnType:"Object"});
const connectedNodes = Array.from(
collectConnectedNodes(
nodes,
currentNode,
parseInt(document.getElementById('inputdistance').value)));
let bufferNodes = [];
for (let i = 0; i < connectedNodes.length; i++) {
bufferNodes.push(nodes[connectedNodes[i]]);
}
const bufferContainer = document.getElementById("buffer-network");
bufferNetwork = new vis.Network(
bufferContainer,
{nodes:bufferNodes,
edges:roamData.edges},
options);
bufferNetwork.on("selectNode", onNodeClick);
bufferNetwork.on("hoverNode", onNodeHover);
bufferNetwork.on("blurNode", onNodeBlur);
if (darkmode) {
bufferNetwork.setOptions({nodes: {font: { color: "#c7cec6" }}});
} else {
bufferNetwork.setOptions({nodes: {font: { color: "black" }}});
}
}
});
</script>
</body>
</html>