third_party/polymer/v1_0/components-chromium/paper-behaviors/paper-button-behavior-extracted.js

   1 /** @polymerBehavior */
   2   Polymer.PaperButtonBehaviorImpl = {
   3
   4     properties: {
   5
   6       _elevation: {
   7         type: Number
   8       }
   9
  10     },
  11
  12     observers: [
  13       '_calculateElevation(focused, disabled, active, pressed, receivedFocusFromKeyboard)'
  14     ],
  15
  16     hostAttributes: {
  17       role: 'button',
  18       tabindex: '0'
  19     },
  20
  21     _calculateElevation: function() {
  22       var e = 1;
  23       if (this.disabled) {
  24         e = 0;
  25       } else if (this.active || this.pressed) {
  26         e = 4;
  27       } else if (this.receivedFocusFromKeyboard) {
  28         e = 3;
  29       }
  30       this._elevation = e;
  31     }
  32   };
  33
  34   /** @polymerBehavior */
  35   Polymer.PaperButtonBehavior = [
  36     Polymer.IronButtonState,
  37     Polymer.IronControlState,
  38     Polymer.PaperButtonBehaviorImpl
  39   ];