polygerrit-ui/app/elements/edit/gr-edit-file-controls/gr-edit-file-controls.js

/**
 * @license
 * Copyright (C) 2017 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.
 */
import '../../shared/gr-button/gr-button.js';
import '../../shared/gr-dropdown/gr-dropdown.js';
import '../../../styles/shared-styles.js';
import {GestureEventListeners} from '@polymer/polymer/lib/mixins/gesture-event-listeners.js';
import {LegacyElementMixin} from '@polymer/polymer/lib/legacy/legacy-element-mixin.js';
import {PolymerElement} from '@polymer/polymer/polymer-element.js';
import {htmlTemplate} from './gr-edit-file-controls_html.js';
import {GrEditConstants} from '../gr-edit-constants.js';

/** @extends PolymerElement */
class GrEditFileControls extends GestureEventListeners(
    LegacyElementMixin(
        PolymerElement)) {
  static get template() { return htmlTemplate; }

  static get is() { return 'gr-edit-file-controls'; }
  /**
   * Fired when an action in the overflow menu is tapped.
   *
   * @event file-action-tap
   */

  static get properties() {
    return {
      filePath: String,
      _allFileActions: {
        type: Array,
        value: () => Object.values(GrEditConstants.Actions),
      },
      _fileActions: {
        type: Array,
        computed: '_computeFileActions(_allFileActions)',
      },
    };
  }

  _handleActionTap(e) {
    e.preventDefault();
    e.stopPropagation();
    this._dispatchFileAction(e.detail.id, this.filePath);
  }

  _dispatchFileAction(action, path) {
    this.dispatchEvent(new CustomEvent(
        'file-action-tap',
        {detail: {action, path}, bubbles: true, composed: true}));
  }

  _computeFileActions(actions) {
    // TODO(kaspern): conditionally disable some actions based on file status.
    return actions.map(action => {
      return {
        name: action.label,
        id: action.id,
      };
    });
  }
}

customElements.define(GrEditFileControls.is, GrEditFileControls);