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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Polymer + Web Components</title>
<meta name="description" content="Getting started with Polymer + Web Components">
<meta name="author" content="Pete Johanson">
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, minimal-ui">
<link rel="stylesheet" href="css/reveal.css">
<link rel="stylesheet" href="css/theme/moon.css" id="theme">
<!-- Code syntax highlighting -->
<link rel="stylesheet" href="lib/css/zenburn.css">
<!-- Printing and PDF exports -->
<script>
var link = document.createElement( 'link' );
link.rel = 'stylesheet';
link.type = 'text/css';
link.href = window.location.search.match( /print-pdf/gi ) ? 'css/print/pdf.css' : 'css/print/paper.css';
document.getElementsByTagName( 'head' )[0].appendChild( link );
</script>
<!--[if lt IE 9]>
<script src="lib/js/html5shiv.js"></script>
<![endif]-->
</head>
<body>
<div class="reveal">
<!-- Any section element inside of this container is displayed as a slide -->
<div class="slides">
<section>
<h1>Polymer &<br/>Web Components</h1>
<h3>Getting Started With Polymer</h3>
<p>
<small><a href="http://tenslashsix.com">Pete Johanson</a> / <a href="http://twitter.com/petejohanson">@petejohanson</a></small>
</p>
</section>
<section>
<svg width="1040" height="840">
<g>
<rect width="140" height="140" x="0" ry="25" style="fill:#00d8da;"/>
<rect width="140" height="140" x="160" ry="25" style="fill:#00d8da;"/>
<rect width="140" height="140" x="320" ry="25" style="fill:#00d8da;"/>
<rect width="140" height="140" x="480" ry="25" style="fill:#00d8da;"/>
<rect width="140" height="140" x="640" ry="25" style="fill:#00d8da;"/>
<rect width="140" height="140" x="800" ry="25" style="fill:#00d8da;"/>
<text x="480" y="80" dominant-baseline="middle" text-anchor="middle" fill="white">Applications</text>
</g>
<g>
<rect width="940" height="140" x="0" y="160" ry="25" style="fill:#00d8da;"/>
<text x="480" y="230" dominant-baseline="middle" text-anchor="middle" fill="white">Existing Frameworks</text>
</g>
<g>
<rect width="140" height="140" y="320" x="0" ry="25" style="fill:#ea45a5;"/>
<rect width="140" height="140" y="320" x="160" ry="25" style="fill:#ea45a5;"/>
<rect width="140" height="140" y="320" x="320" ry="25" style="fill:#ea45a5;"/>
<rect width="140" height="140" y="320" x="480" ry="25" style="fill:#ea45a5;"/>
<rect width="140" height="140" y="320" x="640" ry="25" style="fill:#ea45a5;"/>
<rect width="140" height="140" y="320" x="800" ry="25" style="fill:#ea45a5;"/>
<text x="480" y="390" dominant-baseline="middle" text-anchor="middle" fill="white">Web Components (Polymer?)</text>
</g>
<g>
<rect width="940" height="140" x="0" y="480" ry="25" style="fill:#00d8da;"></rect>
<text x="480" y="550" dominant-baseline="middle" text-anchor="middle" fill="white">Web Platform</text>
</g>
</svg>
</section>
<section>
<section>
<img src="img/not_a_framework_mine.jpg">
<aside class="notes">
<ul>
<li>Web Components a layer directly above the DOM: fundamental building blocks like standard DOM elements</li>
<li>Polymer is syntactic sugar + databinding, eventing on top of Web Components</li>
</ul>
</aside>
</section>
<section>
<h3>No Panacea</h3>
<img src="img/panacea.jpg" alt="Panacea">
<aside class="notes">
<ul>
<li>'Evergreen' browsers only</li>
<li>Browser support is still sketchy. Polyfills needed</li>
<li>Performance improving with things like Polymer 'shady DOM' polyfill</li>
<li>Not suited for high level concepts. Inter-component communication is primitive (events)</li>
</ul>
</aside>
</section>
<section>
<h3>Considerations</h3>
<ul>
<li>Progressive Enhancement Challenges</li>
<li>Server Side Rendering?</li>
<li>Browser Support</li>
</ul>
</section>
</section>
<section>
<section>
<h3>Existing Approaches</h3>
<pre><code data-trim>
<head>
<link rel="stylesheet" href="//code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css">
<script src="//code.jquery.com/jquery-1.10.2.js"></script>
<script src="//code.jquery.com/ui/1.11.4/jquery-ui.js"></script>
<script>
$(function() {
$( "#menu" ).menu({ disabled: true });
});
</script>
</head>
<body>
<ul id="menu">
<li>Item 1</li>
<li>Item 2</li>
</ul>
</code></pre>
<aside class="notes">
<ul>
<li>Less semantic meaning.</li>
<li>CSS is global, so element authors need to be careful</li>
<li>Behaviour/config is disjoint from DOM. Not declarative.</li>
</ul>
</aside>
</section>
<section>
<h3>Polymer</h3>
<pre><code data-trim>
<head>
<link rel="import" href="paper-item/paper-item.html">
<link rel="import" href="paper-menu/paper-menu.html">
<head>
<body>
<paper-menu selected="1">
<paper-item>Item 1</paper-item>
<paper-item>Item 2</paper-item>
</paper-menu>
</body>
</code></pre>
<aside class="notes">
<ul>
<li>CSS is scoped to the local DOM</li>
<li>Can provide more semantic meaning</li>
<li>Declarative customization/configuration with attributes</li>
</ul>
</aside>
</section>
</section>
<section>
<h3>Features</h3>
<ul>
<li>Declared Properties</li>
<li>Local/Light DOM</li>
<li>Data Binding</li>
<li>Events</li>
<li>Scoped Styles and Custom CSS Properties</li>
</ul>
</section>
<section>
<section>
<h3>Declared Properties</h3>
<pre><code data-trim class="lang-javascript">
Polymer({
is: 'my-gravatar',
properties: {
email: String,
size: {
type: String,
value: ''
},
/* ... */
}
});
</code></pre>
</section>
<section>
<h3>Computed Properties</h3>
<pre><code data-trim class="lang-javascript">
Polymer({
is: 'my-gravatar',
properties: {
email: String,
size: String,
imgsrc: {
type: String,
computed: 'computeImageSource(email, size)'
}
},
computeImageSource: function(email, size) {
return ...;
}
});
</code></pre>
</section>
<section>
<h3>Change Notification</h3>
<p>Needed for two-way data binding</p>
<pre><code data-trim>
Polymer({
is: 'my-chooser',
properties: {
choice: {
type: String,
notify: true,
}
},
});
</code></pre>
</section>
</section>
<section>
<section>
<h3>Local (Shadow) DOM</h3>
<pre><code>
<dom-module id="my-gravatar">
<template>
<img src="{{imgsrc}}">
</template>
...
</dom-module>
</code></pre>
<aside class="notes">
<ul>Shady DOM used for now, until native implementations</ul>
</aside>
</section>
<section>
<h3>Automatic Node Finding</h3>
<pre><code>
<dom-module id="my-gravatar">
<template>
<img id="gravatar">
</template>
<script>
Polymer({
is: 'my-gravatar',
ready: function() {
this.$.gravatar.src = '//gravatar.com/avatar/abcdef';
}
});
</script>
</dom-module>
</code></pre>
<aside class="notes">
<ul>
<li>Only Static Nodes</li>
</ul>
</aside>
</section>
<section>
<h3>DOM Manipulation</h3>
<p>Local DOM</p>
<pre><code data-trim>
var toLocal = document.createElement('div');
var beforeNode = Polymer.dom(this.root).childNodes[0];
Polymer.dom(this.root).insertBefore(toLocal, beforeNode);
</code></pre>
<div class="fragment">
<p>Light DOM</p>
<pre><code data-trim>
Polymer.dom(this).appendChild(document.createElement('div'));
var allSpans = Polymer.dom(this).querySelectorAll('span');
</code></pre>
</div>
<aside class="notes">
<ul>
<li>this.root for local DOM</li>
<li>Custom API needed to maintain DOM w/ shady DOM</li>
</ul>
</aside>
</section>
</section>
<section>
<section>
<h3>Light DOM</h3>
<pre><code>
<dom-module id="my-strongbad">
<template>
<strong><content></content></strong>
</template>
...
</dom-module>
</code></pre>
</section>
<section>
<pre><code>
<my-strongbad>Deleted!</my-strongbad>
</code></pre>
</section>
</section>
<section>
<section>
<h3>Data Binding</h3>
<pre><code data-trim>
<dom-module id="my-gravatar">
<template>
<input type="text" value={{email::input}}></input>
<input type="text" value={{size::input}}></input>
<img src="{{imgsrc}}">
</template>
...
</dom-module>
</code></pre>
</section>
<section>
<h3>One-Way vs Two-Way Bindings</h3>
<pre><code data-trim>
<template>
<my-gravatar email="[[email]]"></my-gravatar>
</template>
</code></pre>
<div class="fragment">
<pre><code data-trim>
<template>
<my-chooser choice="{{choice}}"></my-chooser>
</template>
</code></pre>
</div>
</section>
<section>
<h3>One-Way Binding</h3>
<p>Host-To-Child</p>
<pre><code data-trim>
<template>
<my-gravatar email="[[email]]"></my-gravatar>
<input type="text" value="{{email::input}}">
</template>
<script>
Polymer({
is: 'my-element',
properties: {
email: String,
},
});
</script>
</code></pre>
<aside class="notes">
<ul>
<li>Flow's from host down to child</li>
<li>Cannot modify host env value</li>
</ul>
</aside>
</section>
<section>
<h3>Two-Way Binding</h3>
<p>Bi-directional between child and host</p>
<pre><code data-trim>
<template>
<my-chooser choice="{{type}}"></my-chooser>
</template>
<script>
Polymer({
is: 'my-element',
properties: {
type: String,
},
});
</script>
</code></pre>
</section>
</section>
<section>
<section>
<h3>Events</h3>
<ul>
<li>Declarative event listeners</li>
<li>Annotated event listeners</li>
<li>Custom Event Firing</li>
</ul>
</section>
<section>
<h3>Declarative Event Listeners</h3>
<pre><code data-trim>
Polymer({
is: 'x-custom',
listeners: {
'tap': 'regularTap',
'special.tap': 'specialTap'
},
regularTap: function(e) {
alert("Thank you for tapping");
},
specialTap: function(e) {
alert("It was special tapping");
}
});
</code></pre>
<aside class="notes">
<ul>
<li>can hook up id's element from this.$ map</li>
</ul>
</aside>
</section>
<section>
<h3>Annotated Event Listeners</h3>
<pre><code data-trim>
<button on-click="buttonClick">Click Me</button>
</code></pre>
</section>
<section>
<h3>Event Firing</h3>
<pre><code data-trim>
<dom-module id="x-custom">
<template>
<button on-click="handleClick">Kick Me</button>
</template>
<script>
Polymer({
is: 'x-custom',
handleClick: function(e, detail) {
this.fire('kick', {kicked: true});
}
});
</script>
</dom-module>
</code></pre>
</section>
</section>
<section>
<section data-background="img/style.gif">
<h1 style="color: black;">Styling</h1>
</section>
<section>
<h3>Scoped Styles</h3>
<pre><code data-trim>
<template>
<style>
:host { /* Selector to style the host DOM element */
display: block;
}
.content-wrapper > ::content .warning { /* Light DOM */
color: red;
}
</style>
<div class="content-wrapper"><content></content></div>
</template>
</code></pre>
<aside class="notes">
<ul>
<li>Host selector</li>
<li>::content requires selector to the left (shady DOM)</li>
</ul>
</aside>
</section>
<section>
<h3>Cross Scope Styles</h3>
<p>"Theming"</p>
<pre><code data-trim>
<template>
<style>
:host { /* Selector to style the host DOM element */
display: block;
}
.content-wrapper > ::content .warning { /* Light DOM */
color: var(--my-element-warning-color, red);
}
</style>
<div class="content-wrapper"><content></content></div>
</template>
</code></pre>
<aside class="notes">
<ul>
<li>Value defined anywhere in the parent hierarchy</li>
<li>like font settings</li>
</ul>
</aside>
</section>
<section>
<h3>CSS Mixins</h3>
<pre><code data-trim>
<template>
<style>
:host { /* Selector to style the host DOM element */
display: block;
@apply(--my-element-theme);
}
</style>
</template>
</code></pre>
<pre class="fragment"><code data-trim>
<style>
:host {
--my-element-theme {
background-color: green;
}
}
</style>
</code></pre>
<aside class="notes">
<ul>
<li>Allows complete theming not anticipated.</li>
</ul>
</aside>
</section>
</section>
<section>
<section>
<h3>Element Catalog</h3>
<img src="img/element-catalog.png">
</section>
<section>
<h3>Polymer Starter Kit</h3>
<ul>
<li>Best Practices Baked In</li>
<li>Build</li>
<li>Offline Support</li>
<li>Testing</li>
</ul>
</section>
<section>
<pre><code data-trim>
$ wget https://github.com/PolymerElements/polymer-starter-kit/releases/download/v1.0.3/polymer-starter-kit-1.0.3.zip
$ unzip polymer-starter-kit-1.0.3.zip
$ cd polymer-starter-kit-1.0.3
$ npm install && bower install
$ gulp serve
</code></pre>
</section>
</section>
<section>
<h2>Slides</h2>
<a href="http://petejohanson.github.io/nerdsummit-2015-polymer">http://petejohanson.github.io/nerdsummit-2015-polymer</a>
</section>
</div>
</div>
<script src="lib/js/head.min.js"></script>
<script src="js/reveal.js"></script>
<script>
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history: true,
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