mirror of
https://github.com/google/blockly.git
synced 2026-01-25 09:40:10 +01:00
104 lines
2.9 KiB
JavaScript
104 lines
2.9 KiB
JavaScript
/**
|
|
* @license
|
|
* Copyright 2018 Google LLC
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
/**
|
|
* @fileoverview Class for comment change event.
|
|
*/
|
|
'use strict';
|
|
|
|
/**
|
|
* Class for comment change event.
|
|
* @class
|
|
*/
|
|
goog.module('Blockly.Events.CommentChange');
|
|
|
|
const eventUtils = goog.require('Blockly.Events.utils');
|
|
const object = goog.require('Blockly.utils.object');
|
|
const registry = goog.require('Blockly.registry');
|
|
const {CommentBase} = goog.require('Blockly.Events.CommentBase');
|
|
/* eslint-disable-next-line no-unused-vars */
|
|
const {WorkspaceComment} = goog.requireType('Blockly.WorkspaceComment');
|
|
|
|
|
|
/**
|
|
* Class for a comment change event.
|
|
* @param {!WorkspaceComment=} opt_comment The comment that is being
|
|
* changed. Undefined for a blank event.
|
|
* @param {string=} opt_oldContents Previous contents of the comment.
|
|
* @param {string=} opt_newContents New contents of the comment.
|
|
* @extends {CommentBase}
|
|
* @constructor
|
|
* @alias Blockly.Events.CommentChange
|
|
*/
|
|
const CommentChange = function(opt_comment, opt_oldContents, opt_newContents) {
|
|
CommentChange.superClass_.constructor.call(this, opt_comment);
|
|
if (!opt_comment) {
|
|
return; // Blank event to be populated by fromJson.
|
|
}
|
|
|
|
this.oldContents_ =
|
|
typeof opt_oldContents === 'undefined' ? '' : opt_oldContents;
|
|
this.newContents_ =
|
|
typeof opt_newContents === 'undefined' ? '' : opt_newContents;
|
|
};
|
|
object.inherits(CommentChange, CommentBase);
|
|
|
|
/**
|
|
* Type of this event.
|
|
* @type {string}
|
|
*/
|
|
CommentChange.prototype.type = eventUtils.COMMENT_CHANGE;
|
|
|
|
/**
|
|
* Encode the event as JSON.
|
|
* @return {!Object} JSON representation.
|
|
*/
|
|
CommentChange.prototype.toJson = function() {
|
|
const json = CommentChange.superClass_.toJson.call(this);
|
|
json['oldContents'] = this.oldContents_;
|
|
json['newContents'] = this.newContents_;
|
|
return json;
|
|
};
|
|
|
|
/**
|
|
* Decode the JSON event.
|
|
* @param {!Object} json JSON representation.
|
|
*/
|
|
CommentChange.prototype.fromJson = function(json) {
|
|
CommentChange.superClass_.fromJson.call(this, json);
|
|
this.oldContents_ = json['oldContents'];
|
|
this.newContents_ = json['newContents'];
|
|
};
|
|
|
|
/**
|
|
* Does this event record any change of state?
|
|
* @return {boolean} False if something changed.
|
|
*/
|
|
CommentChange.prototype.isNull = function() {
|
|
return this.oldContents_ === this.newContents_;
|
|
};
|
|
|
|
/**
|
|
* Run a change event.
|
|
* @param {boolean} forward True if run forward, false if run backward (undo).
|
|
*/
|
|
CommentChange.prototype.run = function(forward) {
|
|
const workspace = this.getEventWorkspace_();
|
|
const comment = workspace.getCommentById(this.commentId);
|
|
if (!comment) {
|
|
console.warn('Can\'t change non-existent comment: ' + this.commentId);
|
|
return;
|
|
}
|
|
const contents = forward ? this.newContents_ : this.oldContents_;
|
|
|
|
comment.setContent(contents);
|
|
};
|
|
|
|
registry.register(
|
|
registry.Type.EVENT, eventUtils.COMMENT_CHANGE, CommentChange);
|
|
|
|
exports.CommentChange = CommentChange;
|