scratch-blocks/core/events.js

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/**
* @license
* Visual Blocks Editor
*
* Copyright 2016 Google Inc.
* https://developers.google.com/blockly/
*
* 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.
*/
/**
* @fileoverview Events fired as a result of actions in Blockly's editor.
* @author fraser@google.com (Neil Fraser)
*/
'use strict';
goog.provide('Blockly.Events');
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/**
* Allow change events to be created and fired.
* @type {boolean}
*/
Blockly.Events.enabled = true;
/**
* Create a custom event and fire it.
* @param {Object} detail Custom data for event.
*/
Blockly.Events.fire = function(detail) {
var workspace = Blockly.Workspace.getById(detail.workspace);
if (workspace.rendered) {
// Create a custom event in a browser-compatible way.
if (typeof CustomEvent == 'function') {
// W3
var evt = new CustomEvent('blocklyWorkspaceChange', {'detail': detail});
} else {
// MSIE
var evt = document.createEvent('CustomEvent');
evt.initCustomEvent(eventName, false, false, detail);
}
workspace.getCanvas().dispatchEvent(evt);
}
};