polymer-snippets

Polymer Snippets for Atom
robdodson
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Polymer Snippets for Atom

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Install

Go to atom > Preferences... then search for Polymer Snippets in the Install tab.

Note: Restarting Atom might be required for the snippets to show in the auto-complete menu.

Compatibility with Emmet

If you have Emmet installed it will clobber the tab completion for HTML snippets. You can follow this workaround to get Polymer snippets working again.

Elements

Type the name of any iron-* or paper-* element, then hit tab to auto complete. Ex:

snippet1

Polymer

[pe] polymer element

<dom-module id="${1}">
  <template>
    <style>
      :host {
        display: block;
      }
    </style> 
    $2
  </template>
  <script>
    Polymer({
      is: '$1'
    });
  </script> 
</dom-module>

[pe2015] polymer element ES2015

<dom-module id="${2}">
  <template>
    <style>
      :host {
        display: block;
      }
    </style> 
 
  </template>
  <script>
    (function (Polymer) {
      'use strict';
      class ${1} {
        beforeRegister() {
          this.is = '${2}';
 
          this.properties = {
            ${3}
          };
        }
 
        attached() {
        }
      }
 
      Polymer(${1});
    })(Polymer);
  </script> 
</dom-module>

[pes] polymer element with external stylesheet

<dom-module id="$1">
  <link rel="import" type="css" href="$1.css">
  <template>
    $2
  </template>
  <script>
    Polymer({
      is: '$1'
    });
  </script> 
</dom-module>

[pb] polymer behavior

$2Behavior = {
  properties: {
    $3
  }
};

[pbi] polymer behavior implement

$2BehaviorImpl = {
  properties: {
    $3
  }
};
 
$2Behavior = [$2BehaviorImpl];

[pcst] Polymer custom-style template

<dom-module id="${1:shared-styles}">
  <template>
    <style>
      $0
    </style> 
  </template>
</dom-module>

[pcs] Polymer custom-style template

<style ${1:is="custom-style"} include="${0:shared-styles}"></style>

[arrsel] Array selector

<array-selector id="${1:selector}"
    	items="{{${2:array}}}" selected="{{${3:selected}}}"
    	${4:multi} ${5:toggle}>
</array-selector>

[dom-if] Template dom-if

<template is="dom-if" if="$1"${2: restamp="true"}>$0</template>

[dom-repeat] Template dom-repeat

<template is="dom-repeat" items="$1"${2: index-as="index"}>$0</template>

[domb] Template dom-bind

<template is="dom-bind">
  $0
</template>

[webcomponents] web components polyfill

<script src="${0:bower_components}/webcomponentsjs/webcomponents-lite.js"></script>

[wcs] load web components polyfill when not supported

// Load Web Components when not supported
var webComponentsSupported = ('registerElement' in document
    && 'import' in document.createElement('link')
    && 'content' in document.createElement('template'));
 
if (!webComponentsSupported) {
  var script = document.createElement('script');
  script.src = '${0:bower_components}/webcomponentsjs/webcomponents-lite.js';
  document.head.appendChild(script);
}

[hi] html import

<link rel="import" href="${1:bower_components}/${0}/${0}.html">

[hii] html import iron-* element

<link rel="import" href="${1:bower_components}/iron-${2}/iron-${2}.html">

[hip] html import paper-* element

<link rel="import" href="{1:bower_components}/paper-$2/paper-$2.html">

Web Components

[template] template

<template$1>$0</template>

[ce] custom element

var ${4:tmpl} = document.querySelector('${5:template}');
 
var ${1:WidgetProto} = Object.create(HTMLElement.prototype);
 
${1:WidgetProto}.createdCallback = function() {
  var root = this.createShadowRoot();
  root.appendChild(document.importNode(${4:tmpl}.content, true));
};
 
var ${2:Widget} = document.registerElement('${3:my-widget}', {
  prototype: ${1:WidgetProto}
});

HTML

[ph] HTML template with Web Components polyfill

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
 
  <title>${1}</title>
  <meta name="description" content="${2}">
 
  <!-- Mobile -->
  <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
 
  <!-- Chrome / Android -->
  <meta name="mobile-web-app-capable" content="yes">
  <meta name="theme-color" content="black">
  <link rel="icon" href="icon.png">
 
  <!-- Safari / iOS -->
  <meta name="apple-mobile-web-app-capable" content="yes">
  <meta name="apple-mobile-web-app-status-bar-style" content="black">
  <link rel="apple-touch-icon-precomposed" href="apple-touch-icon.png">
 
  <!-- Web Components -->
  <script src="bower_components/webcomponentsjs/webcomponents-lite.js"></script> 
</head>
<body unresolved>
  $0
</body>
</html>

[phs] HTML template with Web Components polyfill load when not supported by browser

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
 
  <title>${1}</title>
  <meta name="description" content="${2}">
 
  <!-- Mobile -->
  <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
 
  <!-- Chrome / Android -->
  <meta name="mobile-web-app-capable" content="yes">
  <meta name="theme-color" content="black">
  <link rel="icon" href="icon.png">
 
  <!-- Safari / iOS -->
  <meta name="apple-mobile-web-app-capable" content="yes">
  <meta name="apple-mobile-web-app-status-bar-style" content="black">
  <link rel="apple-touch-icon-precomposed" href="apple-touch-icon.png">
 
  <!-- Check if Web Components are supported-->
  <script>
    var webComponentsSupported = ('registerElement' in document
        && 'import' in document.createElement('link')
        && 'content' in document.createElement('template'));
 
    if (!webComponentsSupported) {
      var script = document.createElement('script');
      script.src = 'bower_components/webcomponentsjs/webcomponents-lite.js';
      document.head.appendChild(script);
    }
  </script> 
</head>
<body unresolved>
  $0
</body>
</html>

Contributing

  1. Fork it!
  2. Create your feature branch: git checkout -b my-new-feature
  3. Commit your changes: git commit -m 'Add some feature'
  4. Push to the branch: git push origin my-new-feature
  5. Submit a pull request :D

License

MIT License © Rob Dodson