api-console-assets/bower_components/docs-parameters-table/docs-body-media-type-selector.html

This repo only exists to publish api console components to npm

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@license
Copyright 2016 The Advanced REST client authors
Licensed under the Apache License, Version 2.0 (the "License"); you may not
use this file except in compliance with the License. You may obtain a copy of
the License at
http://www.apache.org/licenses/LICENSE-2.0
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distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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the License.
-->
<link rel="import" href="../polymer/polymer.html">
<link rel="import" href="../paper-dropdown-menu/paper-dropdown-menu.html">
<link rel="import" href="../paper-listbox/paper-listbox.html">
<link rel="import" href="../paper-item/paper-item.html">
<!--
A dropdown with media types selector for RAML body declaration.

It extracts media types for provided `body` and displays a dropdown. When value
of the dropdown changes then it sets `selectedType` property to type declaration
for selected body.

By default first media type is selected.


### Styling
`<docs-body-media-type-selector>` provides the following custom properties and mixins for styling:

Custom property | Description | Default
----------------|-------------|----------
`--docs-body-media-type-selector` | Mixin applied to this elements | `{}`
`--docs-body-media-type-selector` | Mixin applied to the dropdown element | `{}`

@group RAML Elements
@element docs-body-media-type-selector
@demo demo/docs-body-parameters-table.html
-->
<dom-module id="docs-body-media-type-selector">
  <template>
    <style>
    :host {
      display: block;
      @apply --docs-body-media-type-selector;
    }

    paper-listbox paper-item {
      cursor: pointer;
    }

    .body-selector {
      @apply --docs-body-media-type-selector-dropdown;
    }
    </style>
    <paper-dropdown-menu label="Media type" class="body-selector">
      <paper-listbox class="dropdown-content" attr-for-selected="data-type" selected="{{mediaType}}">
        <template is="dom-repeat" items="[[availableMediaTypes]]">
          <paper-item data-type$="[[item]]">[[item]]</paper-item>
        </template>
      </paper-listbox>
    </paper-dropdown-menu>
  </template>
  <script>
  Polymer({
    is: 'docs-body-media-type-selector',
    /**
     * Fired when selected body content type have changed.
     * It is not fired if value is not set or if change was caused by
     * computation of available content types automatically set fist available
     * content type.
     *
     * @event raml-docs-media-type-changed
     * @param {String} value Newly selected media type.
     */
    properties: {
      /**
       * The `body` part of the response type of RAML definition.
       * The body must be array. RAML to JSON parser output must be transformed
       * from Object to Array by adding a `key` property on each body item.
       */
      body: Array,
      /**
       * Computed list of media types found in body declaration.
       */
      availableMediaTypes: {
        type: Array,
        computed: '_computeMediaTypes(body)'
      },
      /**
       * A name of selected media type of the body.
       * E.g. "application/json".
       */
      mediaType: {
        type: String,
        notify: true
      },
      /**
       * Currently select type definition for selected media type.
       */
      selectedType: {
        type: Object,
        computed: '_computeSelectedBody(body, mediaType)',
        notify: true
      }
    },

    observers: [
      '_mediaTypesChanged(availableMediaTypes)',
      '_mediaTypeChanged(mediaType)'
    ],

    attached: function() {
      this.listen(window, 'raml-docs-media-type-changed',
        '_bodyMediaTypeHandler');
    },

    detached: function() {
      this.unlisten(window, 'raml-docs-media-type-changed',
        '_bodyMediaTypeHandler');
    },
    // Computes a list of media types for given `body`.
    _computeMediaTypes: function(body) {
      if (!body || !body.length) {
        return [];
      }
      return body.map(function(item) {
        // TODO: new RAML parser output replaces objects with arrays and
        // key will be replaced with name.
        return item.key;
      });
    },
    /**
     * Handler for `raml-docs-media-type-changed` to change `mediaType`
     * value.
     */
    _bodyMediaTypeHandler: function(e) {
      if (e.target === this) {
        return;
      }
      this._cancelBodyContentTypeEvent = true;
      this.set('mediaType', e.detail.value);
      this._cancelBodyContentTypeEvent = false;
    },
    /**
     * Fires the `raml-docs-content-type-changed` event when selected body
     * content type changes.
     * It will not be fired if `_cancelBodyContentTypeEvent` is set
     * or if current selection does not have a value.
     */
    _mediaTypeChanged: function(mediaType) {
      if (this._cancelBodyContentTypeEvent || !mediaType) {
        return;
      }
      this.fire('raml-docs-media-type-changed', {
        value: mediaType
      });
    },
    /**
     * When the selection of body types change it will compute proper
     * body object.
     */
    _computeSelectedBody: function(body, mediaType) {
      if (!mediaType || !body || !body.length) {
        return undefined;
      }
      for (var i = 0, len = body.length; i < len; i++) {
        if (body[i].key === mediaType) {
          return body[i];
        }
      }
      return undefined;
    },
    /**
     * When the `mediaTypes` changes it sets a default (first) media type as
     * selected media type.
     */
    _mediaTypesChanged: function(types) {
      var mediaType;
      if (types && types.length) {
        mediaType = types[0];
      }
      this._cancelBodyContentTypeEvent = true;
      this.set('mediaType', mediaType);
      this._cancelBodyContentTypeEvent = false;
    }
  });
  </script>
</dom-module>