<!-- @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="../paper-material/paper-material.html"> <link rel="import" href="../iron-flex-layout/iron-flex-layout.html"> <!-- Material design: [Cards](https://www.google.com/design/spec/components/cards.html) `paper-card` is a container with a drop shadow. Example: <paper-card heading="Card Title"> <div class="card-content">Some content</div> <div class="card-actions"> <paper-button>Some action</paper-button> </div> </paper-card> Example - top card image: <paper-card heading="Card Title" image="/path/to/image.png"> ... </paper-card> ### Accessibility By default, the `aria-label` will be set to the value of the `heading` attribute. ### Styling The following custom properties and mixins are available for styling: Custom property | Description | Default ----------------|-------------|---------- `--paper-card-header-color` | The color of the header text | `#000` `--paper-card-header` | Mixin applied to the card header section | `{}` `--paper-card-header-text` | Mixin applied to the title in the card header section | `{}` `--paper-card-header-image` | Mixin applied to the image in the card header section | `{}` `--paper-card-header-image-text` | Mixin applied to the text overlapping the image in the card header section | `{}` `--paper-card-content` | Mixin applied to the card content section| `{}` `--paper-card-actions` | Mixin applied to the card action section | `{}` `--paper-card` | Mixin applied to the card | `{}` @group Paper Elements @element paper-card @demo demo/index.html --> <dom-module id="paper-card"> <template> <style include="paper-material"> :host { display: inline-block; position: relative; box-sizing: border-box; background: #fff; border-radius: 2px; @apply(--paper-card); } /* IE 10 support for HTML5 hidden attr */ [hidden] { display: none !important; } .header { position: relative; border-top-left-radius: inherit; border-top-right-radius: inherit; overflow: hidden; @apply(--paper-card-header); } .header img { width: 100%; pointer-events: none; @apply(--paper-card-header-image); } .header .title-text { padding: 16px; font-size: 24px; font-weight: bold; color: var(--paper-card-header-color, #000); @apply(--paper-card-header-text); } .header .title-text.over-image { position: absolute; bottom: 0px; @apply(--paper-card-header-image-text); } :host ::content .card-content { padding: 16px; position:relative; @apply(--paper-card-content); } :host ::content .card-actions { border-top: 1px solid #e8e8e8; padding: 5px 16px; position:relative; @apply(--paper-card-actions); } </style> <div class="header"> <img hidden$="[[!image]]" src="[[image]]"> <div hidden$="[[!heading]]" class$="[[_computeHeadingClass(image)]]">[[heading]]</div> </div> <content></content> </template> </dom-module> <script> Polymer({ is: 'paper-card', properties: { /** * The title of the card. */ heading: { type: String, value: '', observer: '_headingChanged' }, /** * The url of the title image of the card. */ image: { type: String, value: '' }, /** * The z-depth of the card, from 0-5. */ elevation: { type: Number, value: 1, reflectToAttribute: true }, /** * Set this to true to animate the card shadow when setting a new * `z` value. */ animatedShadow: { type: Boolean, value: false }, /** * Read-only property used to pass down the `animatedShadow` value to * the underlying paper-material style (since they have different names). */ animated: { type: Boolean, reflectToAttribute: true, readOnly: true, computed: '_computeAnimated(animatedShadow)' } }, _headingChanged: function(heading) { var label = this.getAttribute('aria-label'); this.setAttribute('aria-label', heading); }, _computeHeadingClass: function(image) { var cls = 'title-text'; if (image) cls += ' over-image'; return cls; }, _computeAnimated: function(animatedShadow) { return animatedShadow; } }); </script>