paper-typeahead.html

<!--

Copyright 2016 Google Inc. All rights reserved.
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
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

### Styling

The following custom properties and mixins are also available for styling:

Custom property | Description | Default
----------------|-------------|----------
`--paper-font-common-base`| default font base | `default`
`--paper-input-container-color`| input container text color | `--secondary-text-color`
`--paper-typeahead-results-layer-max-height` | max height for the results | `auto`
`--paper-typeahead-results` | typeahead result mixin | `{}`
`--paper-typeahead-result-selected-background` | typeahead result selected background | `--paper-indigo-50`
`--paper-typeahead-result-pressed` | paper item pressed mixin | `{}`
`--paper-typeahead-divider-color` | paper item result color divider | `--divider-color`
`--paper-typeahead-result-min-height` | min height of a result |  `30px`
`--paper-typeahead-selected-weight` | font-weight of a single result | `normal`
`--paper-typeahead-result-selected` | selected style mixin | `{}`
`--paper-typeahead-result-focused` | focused style mixin | `{}`
`--paper-typeahead-input` | paper-input-container style mixin | `{}`


@demo demo/index.html
-->

<link rel="import" href="../polymer/polymer.html">

<link rel="import" href="../iron-a11y-keys-behavior/iron-a11y-keys-behavior.html">
<link rel="import" href="../iron-behaviors/iron-control-state.html">
<link rel="import" href="../iron-form-element-behavior/iron-form-element-behavior.html">
<link rel="import" href="../iron-input/iron-input.html">
<link rel="import" href="../iron-selector/iron-selector.html">
<link rel="import" href="../paper-input/paper-input-behavior.html">
<link rel="import" href="../paper-input/paper-input-container.html">
<link rel="import" href="../paper-input/paper-input-error.html">
<link rel="import" href="../paper-item/paper-item.html">
<link rel="import" href="../paper-material/paper-material.html">
<link rel="import" href="../paper-styles/default-theme.html">
<link rel="import" href="../paper-styles/typography.html">

<dom-module id="paper-typeahead">
  <template>
    <style>
      :host {
        @apply --paper-font-common-base;
        --paper-input-container-label: {
          z-index: -1;
        };

        --paper-input-container-underline: {
          z-index: -1;
        };

        display: block;
        position: relative;
      }
      input::-webkit-input-placeholder {
        color: var(--paper-input-container-color, var(--secondary-text-color));
      }
      input:-moz-placeholder {
        color: var(--paper-input-container-color, var(--secondary-text-color));
      }
      input::-moz-placeholder {
        color: var(--paper-input-container-color, var(--secondary-text-color));
      }
      input:-ms-input-placeholder {
        color: var(--paper-input-container-color, var(--secondary-text-color));
      }
      paper-input-container {
        @apply --paper-typeahead-input;
      }
      paper-material {
        border-radius: 0 0 2px 2px;
        width: 100%;
        margin-top: -6px;
        position: absolute;
        overflow: auto;
        -webkit-overflow-scrolling: touch;
        max-height: var(--paper-typeahead-results-layer-max-height, auto);
        @apply --paper-typeahead-results;
      }
      .iron-selected:not(paper-input-container) {
        background: var(--paper-typeahead-result-selected-background, var(--paper-indigo-50));
      }
      paper-item[pressed] {
        @apply --paper-typeahead-result-pressed;
      }
      paper-item {
        cursor: pointer;
        position: relative;
        background: #fff;
        @apply --paper-typeahead-result;
        --paper-item-min-height: var(--paper-typeahead-result-min-height, 30px);
        --paper-item-selected-weight: var(--paper-typeahead-selected-weight, normal);
        --paper-item-selected: var(--paper-typeahead-result-selected);
        --paper-item-focused: var(--paper-typeahead-result-focused);
      }
      paper-item:not(:last-of-type) {
        border-bottom: solid 1px var(--paper-typeahead-divider-color, var(--divider-color));
      }
      paper-item:focus:before {
        display: none;
      }
      [hidden] {
        display: none;
      }
    </style>
    <paper-input-container
        class="selectable"
        no-label-float="[[noLabelFloat]]"
        always-float-label="[[_computeAlwaysFloatLabel(alwaysFloatLabel,placeholder)]]"
        auto-validate$="[[autoValidate]]"
        disabled$="[[disabled]]"
        invalid="[[invalid]]">
      <slot name="prefix" slot="prefix"></slot>
      <label hidden$="[[!label]]" on-tap="_onLabelTap" slot="input">[[label]]</label>
      <input
          is="iron-input"
          id="input"
          aria-labelledby$="[[_ariaLabelledBy]]"
          aria-describedby$="[[_ariaDescribedBy]]"
          disabled$="[[disabled]]"
          bind-value="{{value}}"
          value="{{typedValue::input}}"
          invalid="{{invalid}}"
          prevent-invalid-input="[[preventInvalidInput]]"
          allowed-pattern="[[allowedPattern]]"
          validator="[[validator]]"
          type$="[[type]]"
          pattern$="[[pattern]]"
          required$="[[required]]"
          autocomplete$="[[autocomplete]]"
          autofocus$="[[autofocus]]"
          inputmode$="[[inputmode]]"
          minlength$="[[minlength]]"
          maxlength$="[[maxlength]]"
          min$="[[min]]"
          max$="[[max]]"
          step$="[[step]]"
          name$="[[name]]"
          placeholder$="[[placeholder]]"
          readonly$="[[readonly]]"
          size$="[[size]]"
          autocapitalize$="[[autocapitalize]]"
          autocorrect$="on"
          on-change="_onChange" slot="input">
      <slot name="suffix" slot="suffix"></slot>
      <paper-input-error tabindex="-1" slot="input">[[errorMessage]]</paper-input-error>
    </paper-input-container>
    <paper-material
      hidden$="[[_hideResults]]"
      elevation="[[elevation]]"
      on-mousedown="_mouseDownItems"
      on-mouseleave="_mouseleaveItems"
      tabindex="-1" slot="input">
      <iron-selector
        id="selector"
        selected="{{selected}}"
        items="[[selectorItems]]">
        <template
          is="dom-repeat"
          id="item-list"
          sort="[[sortFn]]"
          items="[[filteredItems]]"
          on-dom-change="_updateItems">
          <paper-item on-mouseenter="_mouseenterItem" class="result-item selectable" tabindex="-1">
            <span>[[getDataDisplayValue(item, dataKey)]]</span>
          </paper-item>
        </template>
      </iron-selector>
    </paper-material>
  </template>
</dom-module>
<script src="paper-typeahead.js"></script>