joshua/dash-visualizer
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Joshua Seigler 2016-09-09 19:26:29 -04:00
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/bower_components/
/node_modules/
/.brackets.json

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This simple project uses the Insight Web Sockets API and Socket.io to stream transactions from the Dash blockchain as they are broadcast.
## Installation
Download the project. No build step is necessary.
## Usage
Open `index.html`.

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'use strict';
var socket = io("http://insight.masternode.io:3000/");
function playSound(url){
var audio = document.createElement('audio');
audio.style.display = "none";
audio.src = url;
audio.autoplay = true;
audio.loop = false;
audio.onended = function(){
audio.remove() //Remove when played.
};
document.body.appendChild(audio);
}
function scrollToEnd() {
window.scrollTo(0,document.body.scrollHeight);
}
var onTransaction = function(data) {
console.log(data);
playSound('assets/bell.mp3');
var tx = document.createElement('div');
tx.className = 'tx';
var txValue = document.createElement('a');
txValue.className = 'txValue';
txValue.href = 'http://insight.masternode.io:3000/tx/' + data.txid;
txValue.target = '_blank';
txValue.setAttribute('rel', 'noopener');
var txOutputs = document.createElement('div');
txOutputs.className = 'txOutputs';
txValue.appendChild(document.createTextNode(data.valueOut));
tx.appendChild(txValue);
tx.appendChild(txOutputs);
var transactions = data.vout.sort(function(a, b) { // sort descending by tx value
return b[Object.keys(b)[0]] - a[Object.keys(a)[0]];
});
transactions.forEach(function(value, index, array) {
var txOut = document.createElement('div');
var outputSatoshis = value[Object.keys(value)[0]];
txOut.className = 'txOut';
txOut.style.width = (outputSatoshis * 0.00001).toFixed(4) + 'px';
txOut.title = (value[Object.keys(value)[0]] * 0.00000001);
txOutputs.appendChild(txOut);
});
document.getElementById('transactionList').appendChild(tx);
scrollToEnd();
};
var onBlock = function(data) {
console.log(data);
playSound('assets/whoosh.mp3');
var newBlock = document.createElement('a');
newBlock.className = 'blockDivider';
newBlock.href = 'http://insight.masternode.io:3000/block/' + data;
newBlock.target = '_blank';
newBlock.setAttribute('rel', 'noopener');
newBlock.appendChild(document.createTextNode(data));
document.getElementById('transactionList').appendChild(newBlock);
scrollToEnd();
};
socket.on('connect', function() {
document.getElementById('connectionStatus').className = 'is-connected';
// Join the room.
socket.emit('subscribe', 'inv');
})
socket.on('tx', onTransaction);
socket.on('block', onBlock);
socket.on('disconnect', function() {
document.getElementById('connectionStatus').className = 'is-disconnected';
});
socket.on('reconnecting', function() {
document.getElementById('connectionStatus').className = 'is-connecting';
});

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Dash transaction visualizer</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<div id="connectionStatus" class="is-connecting"></div>
<div id="transactionList">
</div>
<script src="http://insight.masternode.io:3000/socket.io/socket.io.js"></script>
<script src="app.js"></script>
</body>
</html>

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body {
padding: 2em 0 4em;
margin: 0;
box-sizing: border-box;
font-family: sans-serif;
background-image: linear-gradient(to bottom right, hsl(208, 73%, 43%), hsl(208, 73%, 21.5%));
background-color: hsl(208, 73%, 43%);
color: white;
min-height: 100vh;
}
* {
box-sizing: inherit;
transition: color 0.1s;
}
a {
color: inherit;
text-decoration: none;
}
#transactionList {
padding: 0 1em;
}
.tx {
position: relative;
margin: 4px auto;
border-radius: 4px;
width: 20em;
min-width: 80%;
max-width: 100%;
z-index: 1;
}
.txValue {
display: block;
flex: 0 0 auto;
line-height: 1.25;
}
.txOutputs {
display: flex;
flex-wrap: nowrap;
flex-direction: row;
align-content: stretch;
}
.txOut {
position: relative;
flex: 1 1 auto;
border-bottom: 2px solid white;
border-width: 0 2px 2px 0;
text-align: right;
height: 0.25em;
}
.txOut:after {
content: '';
width: 2px;
height: 0.75em;
background: linear-gradient(to bottom, rgba(255,255,255,0), rgba(255,255,255,0.5) 80%, white);
position: absolute;
right: 0;
bottom: 0;
}
.blockDivider {
display: block;
margin: -2em -1em 1em;
background: linear-gradient(to bottom, rgba(255,255,255,0), rgba(255,255,255,0.125));
padding: 2.5em 1em 0;
color: rgba(0,0,0,0);
text-align: center;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
.blockDivider:hover, .blockDivider:focus {
color: inherit;
}
#connectionStatus {
position: fixed;
top: 0;
right: 0;
font-size: 0.8em;
background: white;
border-radius: 0 0 0 0.5em;
border: solid black;
border-width: 0 0 0.1em 0.1em;
padding: 0.5em;
}
#connectionStatus:before {
display: block;
text-transform: uppercase;
font-weight: bold;
width: 8em;
text-align: center;
transition: transform 0.5s;
transform: none;
}
#connectionStatus.is-disconnected:before {
content: 'Disconnected';
color: red;
}
#connectionStatus.is-connecting:before {
content: 'Connecting...';
color: black;
}
#connectionStatus.is-connected:before {
content: 'Connected';
color: green;
}
#connectionStatus.is-connected {
transition: transform 0.5s;
transition-delay: 2s;
transform: translate3d(0, -100%, 0);
}