bower_components/paper-input/paper-input-char-counter.html

<!--
@license
Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
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<link rel="import" href="../polymer/polymer.html">
<link rel="import" href="../paper-styles/paper-styles.html">
<link rel="import" href="paper-input-addon-behavior.html">
<!--
`<paper-input-char-counter>` is a character counter for use with `<paper-input-container>`. It
shows the number of characters entered in the input and the max length if it is specified.
    <paper-input-container>
      <input is="iron-input" maxlength="20">
      <paper-input-char-counter></paper-input-char-counter>
    </paper-input-container>
### Styling
The following mixin is available for styling:
Custom property | Description | Default
----------------|-------------|----------
`--paper-input-char-counter` | Mixin applied to the element | `{}`
-->
<dom-module id="paper-input-char-counter">
  <template>
    <style>
      :host {
        display: inline-block;
        float: right;
        @apply(--paper-font-caption);
        @apply(--paper-input-char-counter);
      }
    </style>
    <span>[[_charCounterStr]]</span>
  </template>
</dom-module>
<script>
  Polymer({
    is: 'paper-input-char-counter',
    behaviors: [
      Polymer.PaperInputAddonBehavior
    ],
    properties: {
      _charCounterStr: {
        type: String,
        value: '0'
      }
    },
    update: function(state) {
      if (!state.inputElement) {
        return;
      }
      state.value = state.value || '';
      // Account for the textarea's new lines.
      var str = state.value.replace(/(\r\n|\n|\r)/g, '--').length;
      if (state.inputElement.hasAttribute('maxlength')) {
        str += '/' + state.inputElement.getAttribute('maxlength');
      }
      this._charCounterStr = str;
    }
  });
</script>