/**
 * @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,
 * 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.
 */
(function() {
  'use strict';

  const {ShortcutSection} = window.Gerrit.KeyboardShortcutBinder;

  /**
   * @appliesMixin Gerrit.FireMixin
   * @appliesMixin Gerrit.KeyboardShortcutMixin
   * @extends Polymer.Element
   */
  class GrKeyboardShortcutsDialog extends Polymer.mixinBehaviors( [
    Gerrit.FireBehavior,
    Gerrit.KeyboardShortcutBehavior,
  ], Polymer.GestureEventListeners(
      Polymer.LegacyElementMixin(
          Polymer.Element))) {
    static get is() { return 'gr-keyboard-shortcuts-dialog'; }
    /**
     * Fired when the user presses the close button.
     *
     * @event close
     */

    static get properties() {
      return {
        _left: Array,
        _right: Array,

        _propertyBySection: {
          type: Object,
          value() {
            return {
              [ShortcutSection.EVERYWHERE]: '_everywhere',
              [ShortcutSection.NAVIGATION]: '_navigation',
              [ShortcutSection.DASHBOARD]: '_dashboard',
              [ShortcutSection.CHANGE_LIST]: '_changeList',
              [ShortcutSection.ACTIONS]: '_actions',
              [ShortcutSection.REPLY_DIALOG]: '_replyDialog',
              [ShortcutSection.FILE_LIST]: '_fileList',
              [ShortcutSection.DIFFS]: '_diffs',
            };
          },
        },
      };
    }

    /** @override */
    ready() {
      super.ready();
      this._ensureAttribute('role', 'dialog');
    }

    /** @override */
    attached() {
      super.attached();
      this.addKeyboardShortcutDirectoryListener(
          this._onDirectoryUpdated.bind(this));
    }

    /** @override */
    detached() {
      super.detached();
      this.removeKeyboardShortcutDirectoryListener(
          this._onDirectoryUpdated.bind(this));
    }

    _handleCloseTap(e) {
      e.preventDefault();
      e.stopPropagation();
      this.fire('close', null, {bubbles: false});
    }

    _onDirectoryUpdated(directory) {
      const left = [];
      const right = [];

      if (directory.has(ShortcutSection.EVERYWHERE)) {
        left.push({
          section: ShortcutSection.EVERYWHERE,
          shortcuts: directory.get(ShortcutSection.EVERYWHERE),
        });
      }

      if (directory.has(ShortcutSection.NAVIGATION)) {
        left.push({
          section: ShortcutSection.NAVIGATION,
          shortcuts: directory.get(ShortcutSection.NAVIGATION),
        });
      }

      if (directory.has(ShortcutSection.ACTIONS)) {
        right.push({
          section: ShortcutSection.ACTIONS,
          shortcuts: directory.get(ShortcutSection.ACTIONS),
        });
      }

      if (directory.has(ShortcutSection.REPLY_DIALOG)) {
        right.push({
          section: ShortcutSection.REPLY_DIALOG,
          shortcuts: directory.get(ShortcutSection.REPLY_DIALOG),
        });
      }

      if (directory.has(ShortcutSection.FILE_LIST)) {
        right.push({
          section: ShortcutSection.FILE_LIST,
          shortcuts: directory.get(ShortcutSection.FILE_LIST),
        });
      }

      if (directory.has(ShortcutSection.DIFFS)) {
        right.push({
          section: ShortcutSection.DIFFS,
          shortcuts: directory.get(ShortcutSection.DIFFS),
        });
      }

      this.set('_left', left);
      this.set('_right', right);
    }
  }

  customElements.define(GrKeyboardShortcutsDialog.is,
      GrKeyboardShortcutsDialog);
})();