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<!--
@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
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->
<link rel="import" href="../polymer/polymer.html">
<link rel="import" href="../iron-flex-layout/iron-flex-layout.html">
<link rel="import" href="../iron-icon/iron-icon.html">
<link rel="import" href="../paper-behaviors/paper-button-behavior.html">
<link rel="import" href="../paper-material/paper-material-shared-styles.html">
<link rel="import" href="../paper-styles/color.html">
<link rel="import" href="../paper-styles/default-theme.html">
<!--
Material design: [Floating Action Button](https://www.google.com/design/spec/components/buttons-floating-action-button.html)
`paper-fab` is a floating action button. It contains an image placed in the center and
comes in two sizes: regular size and a smaller size by applying the attribute `mini`. When
the user touches the button, a ripple effect emanates from the center of the button.
You may import `iron-icons` to use with this element, or provide a URL to a custom icon.
See `iron-iconset` for more information about how to use a custom icon set.
Example:
<link href="path/to/iron-icons/iron-icons.html" rel="import">
<paper-fab icon="add"></paper-fab>
<paper-fab mini icon="favorite"></paper-fab>
<paper-fab src="star.png"></paper-fab>
### Styling
The following custom properties and mixins are available for styling:
Custom property | Description | Default
----------------|-------------|----------
`--paper-fab-background` | The background color of the button | `--accent-color`
`--paper-fab-keyboard-focus-background` | The background color of the button when focused | `--paper-pink-900`
`--paper-fab-disabled-background` | The background color of the button when it's disabled | `--paper-grey-300`
`--paper-fab-disabled-text` | The text color of the button when it's disabled | `--paper-grey-500`
`--paper-fab` | Mixin applied to the button | `{}`
`--paper-fab-mini` | Mixin applied to a mini button | `{}`
`--paper-fab-disabled` | Mixin applied to a disabled button | `{}`
`--paper-fab-iron-icon` | Mixin applied to the iron-icon within the button | `{}`
`--paper-fab-label` | Mixin applied to the label within the button | `{}`
@group Paper Elements
@demo demo/index.html
-->
<dom-module id="paper-fab">
<template strip-whitespace>
<style include="paper-material-shared-styles">
:host {
@apply(--layout-vertical);
@apply(--layout-center-center);
background: var(--paper-fab-background, --accent-color);
border-radius: 50%;
box-sizing: border-box;
color: var(--text-primary-color);
cursor: pointer;
height: 56px;
min-width: 0;
outline: none;
padding: 16px;
position: relative;
-moz-user-select: none;
-ms-user-select: none;
-webkit-user-select: none;
user-select: none;
width: 56px;
z-index: 0;
/* NOTE: Both values are needed, since some phones require the value `transparent`. */
-webkit-tap-highlight-color: rgba(0,0,0,0);
-webkit-tap-highlight-color: transparent;
@apply(--paper-fab);
}
[hidden] {
display: none !important;
}
:host([mini]) {
width: 40px;
height: 40px;
padding: 8px;
@apply(--paper-fab-mini);
}
:host([disabled]) {
color: var(--paper-fab-disabled-text, --paper-grey-500);
background: var(--paper-fab-disabled-background, --paper-grey-300);
@apply(--paper-fab-disabled);
}
iron-icon {
@apply(--paper-fab-iron-icon);
}
span {
width: 100%;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
text-align: center;
@apply(--paper-fab-label);
}
:host(.keyboard-focus) {
background: var(--paper-fab-keyboard-focus-background, --paper-pink-900);
}
</style>
<iron-icon id="icon" hidden$="{{!_computeIsIconFab(icon, src)}}" src="[[src]]" icon="[[icon]]"></iron-icon>
<span hidden$="{{_computeIsIconFab(icon, src)}}">{{label}}</span>
</template>
<script>
Polymer({
is: 'paper-fab',
behaviors: [
Polymer.PaperButtonBehavior
],
properties: {
/**
* The URL of an image for the icon. If the src property is specified,
* the icon property should not be.
*/
src: {
type: String,
value: ''
},
/**
* Specifies the icon name or index in the set of icons available in
* the icon's icon set. If the icon property is specified,
* the src property should not be.
*/
icon: {
type: String,
value: ''
},
/**
* Set this to true to style this is a "mini" FAB.
*/
mini: {
type: Boolean,
value: false,
reflectToAttribute: true
},
/**
* The label displayed in the badge. The label is centered, and ideally
* should have very few characters.
*/
label: {
type: String,
observer: '_labelChanged'
}
},
_labelChanged: function() {
this.setAttribute('aria-label', this.label);
},
_computeIsIconFab: function(icon, src) {
return (icon.length > 0) || (src.length > 0);
}
});
</script>
</dom-module>
|
