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Desbravando Web Components @mteusor)z
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@mteusor3z mateusor3z mateusor3z.com
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Como "criar" um componente hoje
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Google! plugin jQuery
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Copie e cole o código do plugin
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Funcionou? Beleza
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Web Components
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h,ps:/ /goo.gl/mN64DK
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h"ps:/ /github.com/mateusor3z/gdg-‐light
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h"ps:/ /github.com/eduardolundgren/video-‐camera-‐element
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googlewebcomponents.github.io
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Live demo
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github.com/GoogleWebComponents/google-‐map
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github.com/GoogleWebComponents/google-‐chart
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Web Components Shadow DOM Template Custom Elements HTML Imports
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Custom Elements Define novos elementos HTML/DOM
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Criar Novos Elementos
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var Proto = Object.create(HTMLElement.prototype); Proto.createdCallback = function() { this.textContent = "RuPy Campinas"; }; document.registerElement('rupy-city', { prototype: Proto });
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Rupy
{{onde}}
Polymer({ is: 'rupy-city', properties: { onde: { type: String, value: 'Campinas' } } });
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Usando o elemento
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Estendendo elementos existes
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XMega = Polymer({ is: 'x-mega', extends: 'button', created: function() { this.style.border = '1px solid red'; } }); var el1 = new XMega(); console.log(el1 instanceof HTMLButtonElement); // true var el2 = document.createElement('button', 'x-mega'); console.log(el2 instanceof HTMLButtonElement); // true
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Lifecycle Callbacks created(); detached(); a"ributeChanged(); a"ached();
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Template Template client-‐side na3vo
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Templates são pedaços inertes de DOM que podem ser reu)lizados.
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Templates parseado, não é renderizado conteúdo inerte Usa Dom como scaffold
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...
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...
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t Shadow Dom Esconder Detalhes de implementação
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t O Shadow DOM encapsula style e marcação.
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Encapsula style, marcação e script
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HTML Imports Carregar Web Components
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exemplo elements.html
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Vulcanize npm install -‐g vulcanize $ vulcanize -‐o build.html index.html -‐-‐csp -‐-‐strip
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grunt-‐vulcanize
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gulp-‐vulcanize
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Suporte a Web Components
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t jonrimmer.github.io/are-‐we-‐componen
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t polymer-‐project.org
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ç Google
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core-‐elements
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Visual .... não Visual ....
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h`p:/ /goo.gl/5Tiy9U
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paper-‐elements
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Polymer Paper Elements bu`ons inputs tabs cards panels ....
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Quem está Usando
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Açúcar Sintá3co Custom Elements
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document.registerElement('paper-tabs', { prototype: Object.create( HTMLElement.prototype ) }); vanilla
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... polymer
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// document.createElement('paper-tabs'); Usando
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Açúcar Sintá3co Template
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... vanilla
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First name:
{{item.first}}
Last name:
{{item.last}}
Polymer({ is: 'list-users', ready: function() { this.users: [ {first: 'Bob', last: 'Smith'}, ... ]; } }); polymer
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Açúcar Sintá3co Shadow Dom
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var shadow = el.createShadowRoot(); shadow.innerHTML = '
I`m a profile-card'; vanilla
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I'm a profile-card
Polymer({ is: 'profile-card' }); polymer
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como não se tornar um zumbi
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algumas coisas que podem Ajudar
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webcomponents.org/
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customelements.io/
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github.com/mateusor)z/webcomponents-‐the-‐right-‐way
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nada mais fácil? que chegue direto no meu email?
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Time Mateus Or
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webcomponentsweekly.me
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como começar um component
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t github.com/webcomponents/polymer-‐boilerplate
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t h,ps:/ /github.com/webcomponents/generator-‐element
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Em poucas palavras...
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encapsulamento e reaproveitamento de código de verdade
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Inventa o Futuro
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Obrigado TWITTER.COM/MTEUSORTIZ GITHUB.COM/MATEUSORTIZ