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115 lines
3.2 KiB
JavaScript
115 lines
3.2 KiB
JavaScript
/**
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* @license
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* Copyright 2018 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @fileoverview Base class for comment events.
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* @author fenichel@google.com (Rachel Fenichel)
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*/
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'use strict';
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goog.module('Blockly.Events.CommentBase');
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const AbstractEvents = goog.require('Blockly.Events.Abstract');
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/* eslint-disable-next-line no-unused-vars */
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const CommentCreate = goog.requireType('Blockly.Events.CommentCreate');
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/* eslint-disable-next-line no-unused-vars */
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const CommentDelete = goog.requireType('Blockly.Events.CommentDelete');
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/* eslint-disable-next-line no-unused-vars */
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const WorkspaceComment = goog.requireType('Blockly.WorkspaceComment');
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const Xml = goog.require('Blockly.Xml');
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const eventUtils = goog.require('Blockly.Events.utils');
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const object = goog.require('Blockly.utils.object');
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const utilsXml = goog.require('Blockly.utils.xml');
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/**
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* Abstract class for a comment event.
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* @param {!WorkspaceComment=} opt_comment The comment this event
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* corresponds to. Undefined for a blank event.
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* @extends {AbstractEvents}
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* @constructor
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*/
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const CommentBase = function(opt_comment) {
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/**
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* Whether or not an event is blank.
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* @type {boolean}
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*/
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this.isBlank = typeof opt_comment == 'undefined';
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/**
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* The ID of the comment this event pertains to.
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* @type {string}
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*/
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this.commentId = this.isBlank ? '' : opt_comment.id;
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/**
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* The workspace identifier for this event.
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* @type {string}
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*/
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this.workspaceId = this.isBlank ? '' : opt_comment.workspace.id;
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/**
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* The event group id for the group this event belongs to. Groups define
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* events that should be treated as an single action from the user's
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* perspective, and should be undone together.
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* @type {string}
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*/
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this.group = eventUtils.getGroup();
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/**
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* Sets whether the event should be added to the undo stack.
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* @type {boolean}
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*/
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this.recordUndo = eventUtils.getRecordUndo();
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};
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object.inherits(CommentBase, AbstractEvents);
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/**
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* Encode the event as JSON.
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* @return {!Object} JSON representation.
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*/
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CommentBase.prototype.toJson = function() {
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const json = CommentBase.superClass_.toJson.call(this);
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if (this.commentId) {
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json['commentId'] = this.commentId;
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}
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return json;
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};
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/**
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* Decode the JSON event.
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* @param {!Object} json JSON representation.
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*/
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CommentBase.prototype.fromJson = function(json) {
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CommentBase.superClass_.fromJson.call(this, json);
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this.commentId = json['commentId'];
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};
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/**
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* Helper function for Comment[Create|Delete]
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* @param {!CommentCreate|!CommentDelete} event
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* The event to run.
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* @param {boolean} create if True then Create, if False then Delete
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*/
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CommentBase.CommentCreateDeleteHelper = function(event, create) {
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const workspace = event.getEventWorkspace_();
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if (create) {
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const xmlElement = utilsXml.createElement('xml');
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xmlElement.appendChild(event.xml);
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Xml.domToWorkspace(xmlElement, workspace);
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} else {
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const comment = workspace.getCommentById(event.commentId);
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if (comment) {
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comment.dispose();
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} else {
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// Only complain about root-level block.
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console.warn('Can\'t uncreate non-existent comment: ' + event.commentId);
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}
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}
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};
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exports = CommentBase;
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