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chart.js
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chart.js
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(function (win) {
"use strict";
var doc = win.document,
head = doc.getElementsByTagName('head')[0],
style = doc.createElement('style'),
// data modeled as async requests
Metrics = {
totalUsers: function (cb) {
if (cb) {
win.setTimeout(function () {
cb({"@startDate":"2010-12-01","@metric":"TotalUsers","@endDate":"2010-12-20","@version":"1.0","@generatedDate":"12/20/10 5:24 PM","day":[{"@value":"53819","@date":"2010-12-01"},{"@value":"57558","@date":"2010-12-02"},{"@value":"61141","@date":"2010-12-03"},{"@value":"64872","@date":"2010-12-04"},{"@value":"68495","@date":"2010-12-05"},{"@value":"71623","@date":"2010-12-06"},{"@value":"75000","@date":"2010-12-07"},{"@value":"78454","@date":"2010-12-08"},{"@value":"81759","@date":"2010-12-09"},{"@value":"85345","@date":"2010-12-10"},{"@value":"89234","@date":"2010-12-11"},{"@value":"93452","@date":"2010-12-12"},{"@value":"96345","@date":"2010-12-13"},{"@value":"100462","@date":"2010-12-14"},{"@value":"103824","@date":"2010-12-15"},{"@value":"106738","@date":"2010-12-16"},{"@value":"110239","@date":"2010-12-17"},{"@value":"114587","@date":"2010-12-18"},{"@value":"119272","@date":"2010-12-19"},{"@value":"124892","@date":"2010-12-20"}]});
}, 0);
}
},
activeUsers: function (cb) {
if (cb) {
win.setTimeout(function () {
cb({"@startDate":"2010-12-01","@metric":"ActiveUsersByDay","@endDate":"2010-12-20","@version":"1.0","@generatedDate":"12/20/10 5:23 PM","day":[{"@value":"41553","@date":"2010-12-01"},{"@value":"41144","@date":"2010-12-02"},{"@value":"40008","@date":"2010-12-03"},{"@value":"38243","@date":"2010-12-04"},{"@value":"37217","@date":"2010-12-05"},{"@value":"40894","@date":"2010-12-06"},{"@value":"41705","@date":"2010-12-07"},{"@value":"40476","@date":"2010-12-08"},{"@value":"41786","@date":"2010-12-09"},{"@value":"41093","@date":"2010-12-10"},{"@value":"39575","@date":"2010-12-11"},{"@value":"41027","@date":"2010-12-12"},{"@value":"43043","@date":"2010-12-13"},{"@value":"40742","@date":"2010-12-14"},{"@value":"40535","@date":"2010-12-15"},{"@value":"39569","@date":"2010-12-16"},{"@value":"39119","@date":"2010-12-17"},{"@value":"40312","@date":"2010-12-18"},{"@value":"39067","@date":"2010-12-19"},{"@value":"29471","@date":"2010-12-20"}]});
}, 0);
}
}
},
// wait for both requests to resolve before drawing chart
ready = when(Metrics.totalUsers, Metrics.activeUsers);
function convertDate (date, skipYear) {
var _date = new Date(date);
return (_date.getUTCMonth() + 1) + '/' + _date.getUTCDate() + (skipYear ? '' : '/' + _date.getUTCFullYear().toString().substr(2));
}
function bindEvent (element, type, handler) {
if (element.addEventListener) {
element.addEventListener(type, handler, false);
} else {
element.attachEvent('on'+type, handler);
}
}
function getOffset (el, stopId) {
var left = el.offsetLeft,
top = el.offsetTop,
_el = el;
while (el = el.offsetParent) {
if (el.id === stopId) {
break;
}
left += el.offsetLeft;
}
el = _el;
while (el = el.offsetParent) {
if (el.id === stopId) {
break;
}
top += el.offsetTop;
}
return [left, top];
}
// wait for all async methods to complete before processing callbacks
function when () {
var args = arguments,
len = args.length,
results = new Array(len),
cbArr = [],
counter = 0,
state = 'pending',
methods = {
then: function (cb) {
if (state === 'resolved') {
cb.apply(null, results);
} else {
cbArr.push(cb);
}
return methods;
}
},
i;
for (i = args.length - 1; i >= 0; i--) {
(function (i) {
args[i](function(data) {
results[i] = data;
if (++counter === len) {
state = 'resolved';
for (var r = 0; r < cbArr.length; r++) {
cbArr[r].apply(null, results);
};
}
});
})(i);
};
return methods;
}
function drawGraph (total, active) {
// chart max is biggest data point + 5% rounded up to nearest thousandth
var total_max = Math.max.apply(null, total.day.map(function (d) { return d[ '@value' ] })),
plus20th = total_max + (total_max / 20),
roundPosition = Math.max(Math.floor(Math.log(plus20th) / Math.log(10)), 2) - 2,
decimal = Math.pow(10, 0 - roundPosition),
roundedUp = Math.ceil(plus20th * decimal) / decimal,
days_total = total.day,
days_active = active.day,
container = doc.createElement('div'),
graph_dates = doc.createElement('ul'),
module = doc.getElementById('data-graph'),
day_total, day_active, val_total, val_active, date, percent_total, ratio, ratio_percent, ratio_inverse, performance, anim_style,
wrapper, total_bar, active_bar, tooltip, li, total_offset, last_ratio, i;
container.id = 'container';
graph_dates.id = 'graph-dates';
module.appendChild(container);
module.appendChild(graph_dates);
container.innerHTML = [
'<ul id="graph-users">',
'<li class="noline">', roundedUp ,' <div></div> </li>',
'<li>', roundedUp * .9 ,' <div></div> </li>',
'<li>', roundedUp * .8 ,' <div></div> </li>',
'<li>', roundedUp * .7 ,' <div></div> </li>',
'<li>', roundedUp * .6 ,' <div></div> </li>',
'<li>', roundedUp * .5 ,' <div></div> </li>',
'<li>', roundedUp * .4 ,' <div></div> </li>',
'<li>', roundedUp * .3 ,' <div></div> </li>',
'<li>', roundedUp * .2 ,' <div></div> </li>',
'<li>', roundedUp * .1 ,' <div></div> </li>',
'<li class="noline">0 <div></div> </li>',
'</ul>'
].join('');
// loop through days_total
for (i = 0; i < days_total.length; i++) {
day_total = days_total[i];
day_active = days_active[i];
val_total = day_total['@value'];
val_active = day_active['@value'];
date = convertDate(day_total['@date'], 1);
percent_total = Math.round((val_total / roundedUp) * 100);
ratio = val_active / val_total;
ratio_percent = Math.round((val_active / val_total) * 100);
ratio_inverse = 100 - Math.round(percent_total * ratio);
performance = !i ? 'neutral' : ratio < last_ratio ? 'negative' : 'positive';
// add dynamic animation styles
anim_style = [
'.bar-active' + i + ' {\n',
' -webkit-animation-name: slideup' + i + ';',
'}\n\n',
'@-webkit-keyframes slideup' + i + ' {\n',
' from {\n',
' top: 110%;\n',
' }\n',
' to {\n',
' top: ',ratio_inverse,'%;\n',
' }\n',
'}\n' ].join('');
if (style.styleSheet) {
style.styleSheet.cssText = anim_style;
} else {
style.appendChild(doc.createTextNode(anim_style));
}
wrapper = doc.createElement('div');
total_bar = doc.createElement('div');
active_bar = doc.createElement('div');
tooltip = doc.createElement('div');
tooltip.id = 'tooltip' + i;
wrapper.className = 'bar-wrapper';
total_bar.className = 'bar-total';
active_bar.className = 'bar-active bar-active' + i + ' ' + performance + '-bar';
tooltip.className = 'tooltip in top';
total_bar.setAttribute('style', 'height:' + percent_total + '%');
active_bar.setAttribute('style', 'top:' + ratio_inverse + '%');
// tooltip
tooltip.innerHTML = [
'<div class="tooltip-inner">',
' Total: <strong>293847</strong><br>',
' Active: <strong>2345</strong><br>',
' Ratio: <strong class="'+performance+'">'+ratio_percent+'%</strong>',
'</div>',
'<div class="tooltip-arrow"></div>'].join('');
wrapper.appendChild(total_bar);
wrapper.appendChild(active_bar);
// add date row
li = doc.createElement('li');
li.innerHTML = date;
graph_dates.appendChild(li);
container.appendChild(wrapper);
total_offset = getOffset(total_bar, 'container');
tooltip.setAttribute('style', 'left:' + (total_offset[0] - 20) + 'px; top:' + (total_offset[1] - 80) + 'px;');
container.appendChild(tooltip);
// bind hover event to handle tooltip display
(function (tooltip) {
bindEvent(wrapper, 'mouseover', function (e) {
if(e.target.className.match(/bar-total|bar-active/)) {
tooltip.className += ' showMe';
}
});
bindEvent(wrapper, 'mouseout', function (e) {
tooltip.className = 'tooltip in top';
});
})(tooltip);
last_ratio = ratio;
}
}
function drawTable (total, active) {
doc.getElementById('data-table').innerHTML = [
'<table class="table" summary="Daily metrics of active users compared to total users.">',
'<thead><tr><td> </td></tr></thead>',
'<tbody>',
'<tr><th scope="row">Total Users</th></tr>',
'<tr><th scope="row">Active Users</th></tr>',
'<tr><th scope="row">Active/Total</th></tr>',
'</tbody>',
'</table>'
].join('');
var container = doc.getElementById('data-table'),
table = container.getElementsByTagName('table')[0],
head = table.getElementsByTagName('thead')[0].getElementsByTagName('tr')[0],
bodyRows = table.getElementsByTagName('tbody')[0].getElementsByTagName('tr'),
totalRow = bodyRows[0],
activeRow = bodyRows[1],
ratioRow = bodyRows[2],
days_total = total.day,
days_active = active.day,
date, last_ratio, day_total, day_active, th, td, ratio, i;
// loop through days_total
for (i = 0; i < days_total.length; i++) {
day_total = days_total[i];
day_active = days_active[i];
ratio = Math.floor((day_active['@value'] / day_total['@value']) * 100);
date = convertDate(day_total['@date'], 1);
// add column headers
th = doc.createElement('th');
th.setAttribute('scope', 'col');
th.innerHTML = date;
head.appendChild(th);
// add total users row
td = doc.createElement('td');
td.innerHTML = day_total['@value'];
totalRow.appendChild(td);
// add total users row
td = doc.createElement('td');
td.innerHTML = day_active['@value'];
activeRow.appendChild(td);
// add ratio row
td = doc.createElement('td');
if(last_ratio) {
td.setAttribute('class', last_ratio < ratio ? 'positive' : 'negative');
}
td.innerHTML = ratio + '%';
ratioRow.appendChild(td);
last_ratio = ratio;
};
}
function drawSubtitle (total, active) {
doc.getElementById('sub-title').innerHTML = 'Daily Users from <strong>' + convertDate(total[ '@startDate' ]) + '</strong> to <strong>' + convertDate(total[ '@endDate' ]) + '</strong>';
}
// INITIALIZE
// add an empty stylesheet for dynamic manipulation
style.type = 'text/css';
head.appendChild(style);
// initialize page with table view
ready.then(drawSubtitle).then(drawTable);
// bind view toggle buttons
bindEvent(doc.getElementById('view-toggle'), 'click', function (e) {
var buttons = this.getElementsByTagName('button'),
clicked = e.target;
if (clicked.className.match('active')) {
return;
}
if (clicked.id === 'table-view') {
doc.getElementById('graph-view').className = 'btn';
doc.getElementById('data-graph').innerHTML = '';
ready.then(drawTable);
} else {
doc.getElementById('table-view').className = 'btn';
doc.getElementById('data-table').innerHTML = '';
ready.then(drawGraph);
}
clicked.className += ' active';
});
})(window);