polygerrit-ui/app/elements/change-list/gr-create-destination-dialog/gr-create-destination-dialog.js

/**
 * @license
 * Copyright (C) 2018 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';

  /**
   * Fired when a destination has been picked. Event details contain the repo
   * name and the branch name.
   *
   * @event confirm
   */

  Polymer({
    is: 'gr-create-destination-dialog',
    _legacyUndefinedCheck: true,
    properties: {
      _repo: String,
      _branch: String,
      _repoAndBranchSelected: {
        type: Boolean,
        value: false,
        computed: '_computeRepoAndBranchSelected(_repo, _branch)',
      },
    },
    open() {
      this._repo = '';
      this._branch = '';
      this.$.createOverlay.open();
    },

    _handleClose() {
      this.$.createOverlay.close();
    },

    _pickerConfirm() {
      this.$.createOverlay.close();
      const detail = {repo: this._repo, branch: this._branch};
      this.dispatchEvent(new CustomEvent('confirm', {detail, bubbles: false}));
    },

    _computeRepoAndBranchSelected(repo, branch) {
      return !!(repo && branch);
    },
  });
})();