third_party/polymer/v1_0/components-chromium/paper-input/paper-input-char-counter-extracted.js

   1
   2   Polymer({
   3     is: 'paper-input-char-counter',
   4
   5     behaviors: [
   6       Polymer.PaperInputAddonBehavior
   7     ],
   8
   9     properties: {
  10       _charCounterStr: {
  11         type: String,
  12         value: '0'
  13       }
  14     },
  15
  16     update: function(state) {
  17       if (!state.inputElement) {
  18         return;
  19       }
  20
  21       state.value = state.value || '';
  22
  23       // Account for the textarea's new lines.
  24       var str = state.value.replace(/(\r\n|\n|\r)/g, '--').length;
  25
  26       if (state.inputElement.hasAttribute('maxlength')) {
  27         str += '/' + state.inputElement.getAttribute('maxlength');
  28       }
  29       this._charCounterStr = str;
  30     }
  31   });