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@license
Copyright (C) 2016 The Android Open Source Project

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,
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<link rel="import" href="../../../behaviors/base-url-behavior/base-url-behavior.html">
<link rel="import" href="../../../behaviors/keyboard-shortcut-behavior/keyboard-shortcut-behavior.html">
<link rel="import" href="../../../bower_components/polymer/polymer.html">
<link rel="import" href="../../../bower_components/iron-dropdown/iron-dropdown.html">
<link rel="import" href="../../shared/gr-button/gr-button.html">
<link rel="import" href="../../shared/gr-cursor-manager/gr-cursor-manager.html">
<link rel="import" href="../../shared/gr-rest-api-interface/gr-rest-api-interface.html">
<link rel="import" href="../../shared/gr-tooltip-content/gr-tooltip-content.html">
<link rel="import" href="../../../styles/shared-styles.html">

<dom-module id="gr-dropdown">
  <template>
    <style include="shared-styles">
      :host {
        display: inline-block;
      }
      .dropdown-trigger {
        text-decoration: none;
        width: 100%;
      }
      .dropdown-content {
        background-color: var(--dropdown-background-color);
        box-shadow: 0 1px 5px rgba(0, 0, 0, .3);
      }
      gr-button {
        @apply --gr-button;
      }
      gr-avatar {
        height: 2em;
        width: 2em;
        vertical-align: middle;
      }
      gr-button[link]:focus {
        outline: 5px auto -webkit-focus-ring-color;
      }
      ul {
        list-style: none;
      }
      .topContent,
      li {
        border-bottom: 1px solid var(--border-color);
      }
      li:last-of-type {
        border: none;
      }
      li .itemAction {
        cursor: pointer;
        display: block;
        padding: .85em 1em;
      }
      li .itemAction {
        @apply --gr-dropdown-item;
      }
      li .itemAction.disabled {
        color: var(--deemphasized-text-color);
        cursor: default;
      }
      li .itemAction:link,
      li .itemAction:visited {
        text-decoration: none;
      }
      li .itemAction:not(.disabled):hover {
        background-color: var(--hover-background-color);
      }
      li:focus,
      li.selected {
        background-color: var(--selection-background-color);
        outline: none;
      }
      li:focus .itemAction,
      li.selected .itemAction {
        background-color: transparent;
      }
      .topContent {
        display: block;
        padding: .85em 1em;
        @apply --gr-dropdown-item;
      }
      .bold-text {
        font-weight: var(--font-weight-bold);
      }
    </style>
    <gr-button
        link="[[link]]"
        class="dropdown-trigger" id="trigger"
        down-arrow="[[downArrow]]"
        on-tap="_dropdownTriggerTapHandler">
      <slot></slot>
    </gr-button>
    <iron-dropdown id="dropdown"
        vertical-align="top"
        vertical-offset="[[verticalOffset]]"
        allow-outside-scroll="true"
        horizontal-align="[[horizontalAlign]]"
        on-tap="_handleDropdownTap">
      <div class="dropdown-content" slot="dropdown-content">
        <ul>
          <template is="dom-if" if="[[topContent]]">
            <div class="topContent">
              <template
                  is="dom-repeat"
                  items="[[topContent]]"
                  as="item"
                  initial-count="75">
                <div
                    class$="[[_getClassIfBold(item.bold)]] top-item"
                    tabindex="-1">
                  [[item.text]]
                </div>
              </template>
            </div>
          </template>
          <template
              is="dom-repeat"
              items="[[items]]"
              as="link"
              initial-count="75">
            <li tabindex="-1">
              <gr-tooltip-content
                  has-tooltip="[[_computeHasTooltip(link.tooltip)]]"
                  title$="[[link.tooltip]]">
                <span
                    class$="itemAction [[_computeDisabledClass(link.id, disabledIds.*)]]"
                    data-id$="[[link.id]]"
                    on-tap="_handleItemTap"
                    hidden$="[[link.url]]"
                    tabindex="-1">[[link.name]]</span>
                <a
                    class="itemAction"
                    href$="[[_computeLinkURL(link)]]"
                    download$="[[_computeIsDownload(link)]]"
                    rel$="[[_computeLinkRel(link)]]"
                    target$="[[link.target]]"
                    hidden$="[[!link.url]]"
                    tabindex="-1">[[link.name]]</a>
              </gr-tooltip-content>
            </li>
          </template>
        </ul>
      </div>
    </iron-dropdown>
    <gr-cursor-manager
        id="cursor"
        cursor-target-class="selected"
        scroll-behavior="never"
        focus-on-move
        stops="[[_listElements]]"></gr-cursor-manager>
    <gr-rest-api-interface id="restAPI"></gr-rest-api-interface>
  </template>
  <script src="gr-dropdown.js"></script>
</dom-module>