3 is: 'paper-icon-button',
11 Polymer.PaperInkyFocusBehavior
16 * The URL of an image for the icon. If the src property is specified,
17 * the icon property should not be.
24 * Specifies the icon name or index in the set of icons available in
25 * the icon's icon set. If the icon property is specified,
26 * the src property should not be.
33 * Specifies the alternate text for the button, for accessibility.
37 observer: "_altChanged"
41 _altChanged: function(newValue, oldValue) {
42 var label = this.getAttribute('aria-label');
44 // Don't stomp over a user-set aria-label.
45 if (!label || oldValue == label) {
46 this.setAttribute('aria-label', newValue);